CN210139047U

CN210139047U - Movable and static die core-pulling combined mechanism of die-casting die

Info

Publication number: CN210139047U
Application number: CN201920209759.9U
Authority: CN
Inventors: 王金
Original assignee: SHANGHAI CENSI AUTOMOBILE PARTS CO Ltd
Current assignee: SHANGHAI CENSI AUTOMOBILE PARTS CO Ltd
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2020-03-13
Anticipated expiration: 2029-02-19

Abstract

The utility model relates to a die casting die sound mould combined mechanism of loosing core, die casting die include last mould and lower mould, last mould in be equipped with quiet model round pin (1), lower mould nickel be equipped with and move model round pin (2), quiet model round pin (1) with move model round pin (2) relative concentric setting from top to bottom. Compared with the prior art, the utility model discloses the product that the mechanism made has non-deformable, advantages such as precision height.

Description

Movable and static die core-pulling combined mechanism of die-casting die

Technical Field

The utility model relates to a die casting die is used in the production of automobile parts, especially relates to a die casting die sound mould core pulling combined mechanism.

Background

The die casting is an advanced non-ferrous metal forming technology, and meets the requirements of complication, precision and light weight of the current automobile part products. The requirements for precision and light weight are increasing the requirements for the wall thickness and the profile of the product. As is known, die casting is a high temperature and high pressure operation, and in continuous die casting, due to high pressure, thermal expansion and manufacturing precision, the product has different situations of flash and slide block retreating. Flash and slide block retreat can be generally solved by the mold manufacturing precision and a fixed mold locking block mechanism.

As the market competition is more and more intense, the quality requirements of the products of the customers are correspondingly improved. At present, headache often occurs in each die-casting enterprise, and is difficult when the precision requirement on die-casting products is high, and the generally adopted method is to detect the total number of parts, so that the cost of personnel is high. Such as: the product concentricity is required to be within 0.1mm, the hole depth is more than 100.0mm, and the hole diameter is less than 15.0mm, so that the quality requirements of the general die casting process are difficult to guarantee.

Whether the expected effect can be achieved through the improvement of the die-casting process and method is that the product is deformed due to the holding force generated by die sinking after the product is die-cast and formed and the reason that the quality requirement of the formed product cannot be met through the appearance of the inside of the product is that the product is deformed due to the holding force generated by die sinking. When the product is formed by die casting, the temperature is relatively high, shrinkage deformation is easy to generate, and the problem of large holding force is generated after the product is formed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a non-deformable, die casting die moves quiet mould core pulling combined mechanism that the precision is high in order to overcome the defect that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme: the die-casting die movable and fixed die core-pulling combined mechanism comprises an upper die and a lower die and is characterized in that a static model pin is arranged in the upper die, a movable model pin is arranged on the lower die, and the static model pin and the movable model pin are arranged on the upper die and the lower die in a relatively concentric mode.

The upper end of the static model pin is connected with an upper core-pulling oil cylinder, and the lower end of the dynamic model pin is connected with a lower core-pulling oil cylinder. The core-pulling oil cylinder drives the profile pin to move.

The upper end of the static model pin is fixed on a fixed block of the mould pin, and the fixed block of the mould pin is connected on a core-pulling shaft of the upper core-pulling oil cylinder; the lower end of the movable model pin is fixed on the pin moving block, and the pin moving block is connected to a core pulling shaft of the lower core pulling oil cylinder.

The upper core-pulling oil cylinder is arranged on an upper bracket, and the upper bracket is fixed on the upper die; the lower core-pulling oil cylinder is arranged on the lower support, the lower support is fixed on the lower die, and limiting rods are arranged on the upper support and the lower support.

The upper bracket and the lower bracket are also provided with limiting inductor mounting plates corresponding to each other, corresponding limiting inductors are arranged in the two limiting inductor mounting plates, and the two limiting inductors are connected with a power supply.

And the movable mould pin moves to the position right below the static mould pin under the driving of the lower core-pulling oil cylinder, the top of the movable mould pin is inserted into the bottom of the static mould pin, the upper mould and the lower mould are closed, molten aluminum is injected into the mould cavity, cooling and forming are carried out, the lower core-pulling oil cylinder drives the movable mould pin to withdraw from the position below the static mould pin, and the mould is opened to obtain the product.

The bottom of the static model pin is provided with a plurality of holes matched with a product to be formed, and the top of the movable model pin is provided with pins matched with the holes.

The verticality of the upper hole of the product is within 0.1mm, and the concentricity is within 0.2 mm.

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

(1) the utility model discloses improve die casting die, add quiet model round pin, under the state of compound die, reduce the deflection and hold the influence of the product of power tightly, carry out the slider of movable mould face again and loose core to reach and reduce the product deflection and because hold the influence that the product that the power produced warp tightly, guarantee the quality of product.

(2) By using the bidirectional core pulling method, the length of the profile pin of the deep hole can be effectively reduced, the holding force on the product is reduced, the mold is easy to open, the product is not easy to deform, and after improvement, the product meets the quality requirement.

(3) The utility model discloses at the product die-casting in-process, change the mould into loosing core, take out the type round pin earlier when in the mould, the stand of product is at the concentricity of sound model intracavity fixed hole, hang down straightness stably, and product concentricity, the straightness material that hangs down have guaranteed just can not process reduction product cost.

Drawings

FIG. 1 is a schematic structural view of a movable and stationary mold core-pulling combined mechanism of the die-casting mold of the present invention;

FIG. 2 is a schematic structural view of a die-cast product;

fig. 3 is a side view of a die-cast product.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1

As shown in fig. 1-2, the movable and fixed die core-pulling combined mechanism of the die-casting die comprises an upper die and a lower die, wherein a fixed die pin 1 is arranged in the upper die, a movable die pin 2 is arranged on the lower die, and the fixed die pin 1 and the movable die pin 2 are arranged in a vertically opposite concentric manner.

The upper end of the static model pin 1 is fixed on a mould pin fixing block 5, the mould pin fixing block 5 is connected on a core pulling shaft of the upper core pulling oil cylinder 3, the upper core pulling oil cylinder 3 is arranged on an upper bracket 7, and the upper bracket 7 is fixed on an upper die; the lower end of the movable model pin 2 is fixed on a pin moving block 6, and the pin moving block 6 is connected on a core pulling shaft of the lower core pulling oil cylinder 4. The lower core-pulling oil cylinder 4 is arranged on the lower support 8, the lower support 8 is fixed on the lower die, and limiting rods 9 are arranged on the upper support 7 and the lower support 8. The upper support 7 and the lower support 8 are also provided with corresponding limiting inductor mounting plates 10, and corresponding limiting inductors are arranged in the two limiting inductor mounting plates 10. The bottom of the static model pin 1 is provided with a plurality of holes matched with a product to be formed, and the top of the movable model pin 2 is provided with pins matched with the holes.

When the mould is used, the movable mould pin 2 moves to the position under the static mould pin 1 under the driving of the lower core-pulling oil cylinder 4, the corresponding limit inductors are arranged in the two limit inductor mounting plates 10 to sense whether the movable mould pin 2 moves in place, if the movable mould pin 2 does not move in place, the inductors transmit signals to the controller, the controller controls the lower core-pulling oil cylinder 4 to continue to drive the movable mould pin 2 to move until the upper limit inductor mounting plate and the lower limit inductor mounting plate 10 are completely abutted, the upper core-pulling oil cylinder and the lower core-pulling oil cylinder move to the position of the limit rod 9, the static mould pin 1 and the movable mould pin 2 are vertically and relatively concentric, pins at the top of the movable mould pin 2 are inserted into corresponding holes at the bottom of the static mould pin 1, an insertion signal is given through the limit rod 9 and the limit inductor mounting plates 10, the upper mould and the lower mould are closed, aluminum liquid is injected into a mould cavity, cooling and forming is carried out, opening the mold to obtain a product 11 (as shown in fig. 2-3, in this embodiment, a wiper base). The verticality of the upper hole of the obtained product is within 0.1mm, and the concentricity is within 0.2 mm.

Claims

1. The utility model provides a die casting die sound mould combined mechanism of loosing core, die casting die includes mould and lower mould, its characterized in that, last mould in be equipped with quiet model round pin (1), the lower mould in be equipped with and move model round pin (2), quiet model round pin (1) and move model round pin (2) relative concentric setting from top to bottom.

2. The die-casting die movable and stationary die core-pulling combined mechanism as claimed in claim 1, wherein the upper end of the stationary die pin (1) is connected with an upper core-pulling oil cylinder (3), and the lower end of the movable die pin (2) is connected with a lower core-pulling oil cylinder (4).

3. The die-casting die moving and stationary die core pulling combined mechanism as claimed in claim 2, wherein the upper end of the stationary die pin (1) is fixed on a die pin fixing block (5), and the die pin fixing block (5) is connected to a core pulling shaft of the upper core pulling oil cylinder (3); the lower end of the movable model pin (2) is fixed on a pin moving block (6), and the pin moving block (6) is connected on a core pulling shaft of the lower core pulling oil cylinder (4).

4. The die-casting die moving and stationary die core pulling combined mechanism as claimed in claim 3, wherein the upper core pulling oil cylinder (3) is arranged on an upper bracket (7), and the upper bracket (7) is fixed on the upper die; the lower core-pulling oil cylinder (4) is arranged on the lower support (8), the lower support (8) is fixed on the lower die, and limiting rods (9) are arranged on the upper support (7) and the lower support (8).

5. The die-casting die moving and stationary die core pulling combined mechanism as claimed in claim 4, wherein the upper bracket (7) and the lower bracket (8) are further provided with corresponding limiting inductor mounting plates (10), and corresponding limiting inductors are arranged in the two limiting inductor mounting plates (10).

6. The die-casting die moving and static die core pulling combined mechanism is characterized in that the moving mold pin (2) moves to the position right below the static mold pin (1) under the driving of the lower core pulling oil cylinder (4), the top of the moving mold pin (2) is inserted into the bottom of the static mold pin (1), an upper die and a lower die are assembled, molten aluminum is injected into a die cavity, cooling forming is carried out, the lower core pulling oil cylinder (4) drives the moving mold pin (2) to withdraw from the position below the static mold pin (1), and a product can be obtained after die opening.

7. The die-casting die moving and static die core pulling combined mechanism as claimed in claim 6, wherein a plurality of holes matched with a product to be formed are formed in the bottom of the static die pin (1), and pins matched with the holes are formed in the top of the moving die pin (2).

8. The die-casting die movable and stationary die core-pulling combined mechanism as claimed in claim 6, wherein the perpendicularity of the hole in the product is within 0.1mm, and the concentricity is within 0.2 mm.