CN220311711U

CN220311711U - Die casting die

Info

Publication number: CN220311711U
Application number: CN202320971448.2U
Authority: CN
Inventors: 董秋炯; 黄军灿; 黄冠军; 顾鹏飞
Original assignee: Zhejiang Haolong Electrical Co ltd
Current assignee: Zhejiang Haolong Electrical Co ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2024-01-09
Anticipated expiration: 2033-04-24

Abstract

The utility model discloses a die casting die, which comprises: a fixed mold frame; the fixed mold core is arranged on the movable mold frame on the fixed mold frame and is matched with the fixed mold frame; the movable mould leg is arranged on the movable mould frame; the guide post is arranged on the movable die foot; the movable mold core is arranged on the movable mold frame; the air exhaust block is arranged on the movable die frame: the insert is matched with the fixed die core; an insert fixing mechanism; a pouring mechanism; the liftout mechanism inserts fixed establishment includes: the fastening pin is arranged on the insert; the first elastic piece is arranged on the fastening pin; the bolt is arranged on the end part of the first elastic piece; the movable mold core is provided with a conical hole matched with the insert.

Description

Die casting die

Technical Field

The utility model belongs to the technical field of die casting equipment, and particularly relates to a die casting die.

Background

When the die-casting product is designed, due to the requirement of certain special functions, inserts made of different materials are required to be used as a part to be cast on the same product, so that the die-casting product has unique performance indexes (strength, hardness, corrosion resistance, wear resistance, magnetic permeability and conductivity) so as to solve the problem of using functions with unique technical requirements.

When the die is designed, a fit clearance of 0-0.030 mm is often reserved at the joint of the excircle of the shaft pin insert and the die core. When the diameter of the insert is tightly matched with the upper tolerance, and the clearance is smaller, the shrinkage size of the casting and the pouring channel is changed and is inconsistent with the die, as shown in figure 1, the insert can be rubbed with a die hole for installing the insert when the insert is taken out of the die, and the surface A of the insert is provided with a rubbed trace; when the diameter of the insert is loose in lower tolerance fit and the fit clearance of the surface A is larger, one point of aluminum water can be drilled in the clearance to form flash, the insert can be rubbed with the flash in the drilling clearance when being taken out of the die, and the surface A of the insert is easy to be broken by pulling. Because the length of the insert also has a tolerance which allows variation, aluminum water often drills into the B, C end face of the insert to form flash, so that the height H of the insert on a casting is not stable enough in size, and out-of-tolerance phenomenon occurs. Because the insert on the die casting is not finished and is directly used for assembly, the surface of the insert is required to be impermissible to have pull damage and flash defects, and the die is often maintained during actual production, and meanwhile, a plurality of quality problems of products are caused to be scrapped.

Disclosure of Invention

The content of the present application is intended to introduce concepts in a simplified form that are further described below in the detailed description. The section of this application is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

To solve the technical problems mentioned in the background section above, some embodiments of the present application provide a die casting mold, including a die casting mold, comprising:

a fixed mold frame;

a fixed mold core arranged on the fixed mold frame

The movable mold frame is matched with the fixed mold frame;

the movable mould leg is arranged on the movable mould frame;

the guide post is arranged on the movable die foot;

the movable mold core is arranged on the movable mold frame;

the air exhaust block is arranged on the movable die frame:

the insert is matched with the fixed die core;

an insert fixing mechanism;

a pouring mechanism;

a material ejection mechanism;

the insert fixing mechanism includes:

the fastening pin is arranged on the insert;

the first elastic piece is arranged on the fastening pin;

the bolt is arranged on the end part of the first elastic piece; the movable mold core is provided with a conical hole matched with the insert.

Further, the ejection mechanism comprises an ejector rod fixing plate arranged on the movable die foot, an ejector rod pushing plate, an ejector rod arranged on the ejector rod fixing plate and a reset rod arranged on the ejector rod fixing plate.

Further, the pouring mechanism comprises a sprue bush and a diversion cone, and the fixed die frame is provided with a sprue.

Further, a main runner and a transition runner are arranged on the movable mold core.

Further, the mold further comprises a cushion block, wherein the cushion block is respectively connected to the movable mold frame, the fixed mold frame and the movable mold foot through screws, and the cushion block is provided with insertion holes.

Further, the small end hole diameter of the tapered hole is larger than the outer diameter of the insert.

Further, the difference between the diameter of the small end hole of the conical hole and the outer diameter of the insert is 0.2-0.4mm.

The application provides a die casting die capable of avoiding pull injuries and flash.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application.

In addition, the same or similar reference numerals denote the same or similar elements throughout the drawings. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.

In the drawings:

fig. 1 is a schematic view of a prior art insert holder.

Fig. 2 is a schematic structural view of the present utility model.

Fig. 3 is a cross-sectional view of the present utility model.

Fig. 4 is an enlarged view at a of fig. 3.

FIG. 5 is a schematic diagram of the present utility model.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

It should be noted that, for convenience of description, only the portions related to the present utility model are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.

It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 2-5, the mold comprises a fixed mold frame 1, a fixed mold core 2, a movable mold frame 3, movable mold legs 4, guide posts 5, a movable mold core 6, an exhaust block 7, an insert 8, a cushion block 9, an insert fixing mechanism, a pouring mechanism and a material ejection mechanism, wherein the fixed mold core 2 is fixed in the fixed mold frame; the movable mould feet 4 are fixed on the movable mould frame; the guide post 5 is fixed on the movable die leg, and the fixed die frame and the movable die frame are provided with holes for the guide post to pass through; the movable mold core 6 is arranged on the movable mold frame; the air exhaust block 7 is arranged on the fixed die frame and the movable die frame.

As shown in fig. 2-5, the insert fixing mechanism comprises a fastening pin 81, a first elastic member 82 and a bolt 83, wherein one end of the fastening pin 81 is connected with the insert, and a stepped hole matched with the fastening pin is formed in the fixed mold core; the first elastic member 82 is a spring, one end of the spring is connected with the fastening pin, 83 is fixed on the end of the first elastic member, the movable mold core is provided with a conical hole 84 matched with the insert, the diameter of the small end hole of the conical hole is larger than the outer diameter of the insert, and the difference value between the diameter of the small end hole of the conical hole and the outer diameter of the insert is 0.2-0.4mm.

In the case of a retracted securing pin, the end face of the insert is brought into contact with the insert at the maximum length of the insert in the size range. The thickness of the step at the rear part of the fastening pin is designed to be 0.5-1 mm smaller than the depth of the step hole, so that the fastening pin has a movable gap of 0.5-1 mm, and the fastening pin can move back and forth, so that the head part of the fastening pin can press the insert each time. By forming the taper hole and enlarging the diameter of the small end hole of the taper hole by 0.2-0.4mm compared with the insert, the insert is not in direct contact with the taper hole of the die, and thus the insert can not be provided with a pull mark. And can also be when the die casting begins the hot mould, the insert hole of mould need not pack into the insert, until after the product can be completely die-cast, reuse the insert to directly die-cast out the qualified foundry goods, can eliminate the defect that the use of insert caused extravagant insert when the hot mould like this. The insert is stably fixed on the mold core through the elasticity of the first elastic piece and the designed clearance, the phenomenon that the product is abnormal due to the length tolerance of the insert is eliminated, and meanwhile, a large section of the insert fixed in the mold core in the radial direction is manufactured into a conical hole form to prevent the insert from being contacted with the insert, so that the trace of strain is avoided, the repair times are greatly reduced, and meanwhile, the scrappage is reduced.

As shown in fig. 5, the ejection mechanism comprises an ejector rod fixing plate 41, an ejector rod push plate 42, an ejector rod 43 and a reset rod 44, wherein the end part of the ejector rod 43 is fixed on the ejector rod fixing plate; the ejector rod push plate 42 can slide relative to the movable die legs; one end of the reset lever 44 is fixed on the push rod pushing plate.

As shown in fig. 5, the pouring mechanism includes a sprue bush 101 and a tap 102, the fixed mold frame is provided with a sprue, the sprue bush 101 is fixed at the sprue, the tap 102 is provided on the movable mold frame and connected with the sprue, and the movable mold core is provided with a main runner 61 and a transition runner 62.

As shown in fig. 2, the cushion blocks 9 are respectively connected to the movable mold frame, the fixed mold frame and the movable mold foot through screws, and the cushion blocks are provided with jacks, so that when the mold is required to be carried, the inserting rods of the forklift can be inserted into the jacks to be carried, and the mold position is convenient to move.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the utility model in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the utility model. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A die casting die, comprising:

a fixed mold frame;

the fixed mold core is arranged on the fixed mold frame

The movable mold frame is matched with the fixed mold frame;

the movable die feet are arranged on the movable die frame;

the guide post is arranged on the movable die foot;

the movable mold core is arranged on the movable mold frame;

the air exhaust block is arranged on the movable die frame:

the insert is matched with the fixed die core;

an insert fixing mechanism;

a pouring mechanism;

a material ejection mechanism;

the insert fixing mechanism is characterized by comprising:

the fastening pin is arranged on the insert;

the first elastic piece is arranged on the fastening pin;

2. A die casting mold according to claim 1, wherein: the ejection mechanism comprises an ejector rod fixing plate arranged on the movable die foot, an ejector rod pushing plate, an ejector rod arranged on the ejector rod fixing plate and a reset rod arranged on the ejector rod fixing plate.

3. A die casting mold according to claim 1, wherein: the pouring mechanism comprises a sprue bush and a diversion cone, and the fixed die frame is provided with a sprue.

4. A die casting mold according to claim 3, wherein: and the movable mold core is provided with a main runner and a transition runner.

5. A die casting mold according to claim 1, wherein: the die comprises a movable die frame, a fixed die frame and a movable die foot, and is characterized by further comprising a cushion block which is respectively connected to the movable die frame, the fixed die frame and the movable die foot through screws, and the cushion block is provided with jacks.

6. A die casting mold according to claim 1, wherein: the diameter of the small end hole of the conical hole is larger than the outer diameter of the insert.

7. A die casting mold according to claim 6, wherein: the difference between the diameter of the small end hole of the conical hole and the outer diameter of the insert is 0.2-0.4mm.