CN212419531U

CN212419531U - Difficult mould core round pin of breaking

Info

Publication number: CN212419531U
Application number: CN202021066702.7U
Authority: CN
Inventors: 缪友东; 陈章中; 陈枫
Original assignee: Yancheng Taiouchang Machinery Co ltd
Current assignee: Yancheng Taiouchang Machinery Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-01-29
Anticipated expiration: 2030-06-10

Abstract

The utility model discloses a mould core round pin of difficult rupture, including selling the cap, the bottom fixedly connected with round pin post of selling the cap, sell in the middle of the bottom fixedly connected with of round pin post, the bottom fixedly connected with core round pin of middle round pin, the inside fixedly connected with reinforcing pipe of round pin post, the inside of reinforcing pipe is provided with the cooling tube. The reinforced pipe is made of low-carbon steel, the core pin is made of silicon, the reinforced pipe and the core pin are bonded by silicone grease, and the middle pin and the pin column are made of the same material as the core pin. The middle pin, the pin column and the core pin are arranged to be in smooth transition, stress concentration at the joint is reduced, and breakage caused by stress concentration is avoided. Through setting up the material that silicon is the core pin, silicon itself has very high heat resistance, and the heat conductivity can not become fragile because of the high temperature difference, but silicon itself is fragile material, through the inside at the core pin set up the reinforced pipe of low carbon steel, avoids buckling and leads to the core pin to break.

Description

Difficult mould core round pin of breaking

Technical Field

The utility model relates to a core round pin field especially relates to a mould core round pin of difficult rupture.

Background

In the casting forming process, the core pin is in a low-temperature environment, and the temperature of the periphery of the core pin is high, so that the core pin becomes fragile in a high-temperature-difference environment and is easy to break in the final taking-out process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a mould core pin which is not easy to break.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a mould core round pin of difficult rupture, includes the round pin cap, the bottom fixedly connected with round pin post of round pin cap, round pin in the middle of the bottom fixedly connected with of round pin post, the bottom fixedly connected with core round pin of middle round pin, the inside fixedly connected with reinforcing tube of round pin post, the inside of reinforcing tube is provided with the cooling tube.

As a further description of the above technical solution:

the junction of the middle pin and the pin column is in smooth transition, and the junction of the middle pin and the core pin is in smooth transition.

As a further description of the above technical solution:

the pin column, the middle pin and the core pin are integrated, the length of the reinforcing pipe is from the top end of the pin column to the bottom end of the core pin, and the diameter of the pin column is larger than that of the core pin.

As a further description of the above technical solution:

the cooling pipe is communicated to the inside of the pin cap, a round angle is arranged at the bottom end of the pin cap, and a round angle is arranged at the bottom end of the inside of the pin cap.

As a further description of the above technical solution:

the cooling pipe is communicated with the top end and the bottom end of the reinforcing pipe, and cooling liquid is arranged inside the cooling pipe.

As a further description of the above technical solution:

the reinforced pipe is made of low-carbon steel, the core pin is made of silicon, the reinforced pipe and the core pin are bonded by silicone grease, and the middle pin and the pin column are made of the same material as the core pin.

The utility model discloses following beneficial effect has:

1. the utility model discloses a round pin and round pin post and core round pin smooth transition in the middle of setting reduces the stress concentration of junction, avoids taking place the rupture because of stress concentration.

2. The utility model discloses a set up the material that silicon is the core round pin, silicon itself has very high heat resistance, and the heat conductivity can not become fragile because of the high difference in temperature, but silicon itself is brittle material, through the reinforcing pipe that sets up low-carbon steel in the inside of core round pin, avoids buckling and leads to the core round pin rupture.

Drawings

Fig. 1 is a front cross-sectional view of a mold core pin that is not easily broken according to the present invention;

fig. 2 is a front view of a mold core pin that is not easily broken according to the present invention;

fig. 3 is a bottom view of the mold core pin not easily broken according to the present invention.

Illustration of the drawings:

1. a pin cap; 2. a pin; 3. a middle pin; 4. a core pin; 5. a cooling tube; 6. and reinforcing the tube.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a mould core round pin of difficult rupture, including selling cap 1, be connected with the cooling water inlet, the bottom fixedly connected with round pin post 2 of selling cap 1, through setting up the width on round pin post 2 increase core round pin 4 tops, round pin 3 in the middle of the bottom fixedly connected with of round pin post 2, be used for smooth transition to reduce stress concentration, the bottom fixedly connected with core round pin 4 of middle round pin 3, be used for inserting in the core, the bottom is connected with the cooling water outlet, the inside fixedly connected with reinforcing pipe 6 of round pin post 2, strengthen the anti ability of buckling of core round pin 4, the inside of reinforcing pipe 6 is provided with cooling tube 5, take away the heat on 4 remaining reinforcing pipes 6 of core round pin through the cooling water.

The joint of the middle pin 3 and the pin column 2 is in smooth transition, and the joint of the middle pin 3 and the core pin 4 is in smooth transition, so that stress concentration is avoided. The pin column 2, the middle pin 3 and the core pin 4 are integrated into a whole, the whole is formed into the core pin, the length of the reinforcing pipe 6 is from the top end of the pin column 2 to the bottom end of the core pin 4, the diameter of the pin column 2 is larger than that of the core pin 4, and the pin column 2 is used for increasing the thickness to improve the strength. The cooling pipe 5 communicates to the inside of round pin cap 1, and the bottom of round pin cap 1 is provided with the fillet, and the inside bottom of round pin cap 1 is provided with the fillet, reduces stress concentration. The cooling pipe 5 penetrates the top end and the bottom end of the reinforcing pipe 6, and a cooling liquid is provided inside the cooling pipe 5 to perform rapid cooling by the cooling liquid. The material of the reinforcing pipe 6 is low carbon steel, has strong toughness but not high rigidity, the material of the core pin 4 is silicon, the reinforcing pipe 6 and the core pin 4 are bonded by silicone grease and used for filling a gap between the reinforcing pipe 6 and the core pin 4, and the material of the middle pin 3 and the material of the pin column 2 are the same as the material of the core pin 4.

The working principle is as follows: through setting up middle round pin 3 and round pin 2 and core pin 4 smooth transition, reduce the stress concentration of junction, avoid taking place the rupture because of stress concentration. Through setting up the material that silicon is the core pin, silicon itself has very high heat resistance, and the heat conductivity can not become fragile because of the high temperature difference, but silicon itself is fragile material, through the inside at the core pin set up the reinforced pipe 6 of low carbon steel, avoids buckling and leads to the core pin to break.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a difficult mould core round pin of breaking, includes round pin cap (1), its characterized in that: the bottom fixedly connected with round pin post (2) of round pin cap (1), round pin (3) in the middle of the bottom fixedly connected with of round pin post (2), the bottom fixedly connected with core round pin (4) of middle round pin (3), the inside fixedly connected with reinforcing tube (6) of round pin post (2), the inside of reinforcing tube (6) is provided with cooling tube (5).

2. A mold core pin that is not susceptible to breaking as in claim 1, wherein: the joint of the middle pin (3) and the pin column (2) is in smooth transition, and the joint of the middle pin (3) and the core pin (4) is in smooth transition.

3. A mold core pin that is not susceptible to breaking as in claim 1, wherein: the pin column (2), the middle pin (3) and the core pin (4) are integrated, the length of the reinforcing pipe (6) is from the top end of the pin column (2) to the bottom end of the core pin (4), and the diameter of the pin column (2) is larger than that of the core pin (4).

4. A mold core pin that is not susceptible to breaking as in claim 1, wherein: the cooling pipe (5) is communicated to the inside of the pin cap (1), a round angle is arranged at the bottom end of the pin cap (1), and a round angle is arranged at the bottom end of the inside of the pin cap (1).

5. A mold core pin that is not susceptible to breaking as in claim 1, wherein: the cooling pipe (5) penetrates through the top end and the bottom end of the reinforcing pipe (6), and cooling liquid is arranged inside the cooling pipe (5).

6. A mold core pin that is not susceptible to breaking as in claim 1, wherein: the reinforced pipe (6) is made of low-carbon steel, the core pin (4) is made of silicon, the reinforced pipe (6) and the core pin (4) are bonded by silicone grease, and the middle pin (3) and the pin column (2) are made of the same material as the core pin (4).