CN114030133B - Insert structure and die - Google Patents

Abstract

The invention discloses an insert structure and a mold. The insert structure includes a first insert, a second insert and a third insert. The first insert, the second insert and the third insert are nested in sequence from the outside to the inside. In the third insert, the hardness of the material of the first insert and the third insert is greater than the hardness of the material of the second insert, and the thermal conductivity of the material of the first insert and the third insert is smaller than the thermal conductivity of the material of the second insert. By embedding the second insert with greater thermal conductivity into the first insert with greater hardness, and embedding the third insert with greater hardness into the second insert, the insert structure integrates high hardness and The two major advantages of high thermal conductivity not only ensure that the insert structure has greater hardness, but also ensure that the insert structure has greater thermal conductivity.

Description

A kind of insert structure and mold

Technical field

The present invention belongs to the technical field of injection molds. Specifically, it relates to a mold, and in particular, to an insert structure located in the wall thickness transition zone of the mold.

Background technique

Existing molds have many wall thickness transition zones. The wall thickness transition zone is formed between the thick wall zone and the thin wall zone of the mold. Among them, the local temperature of the thick wall zone of some molds is too high, and some The local temperature of the thin-walled area of the mold is relatively low, resulting in a large temperature difference between the thick-walled area and the thin-walled area, causing the wall-thickness transition area to become a hotspot area where heat is concentrated but not easy to cool.

At present, the wall thickness transition area is cooled by arranging inserts in the wall thickness transition area and setting up a cooling structure inside the insert, so that the temperature of the mold can be quickly cooled to the temperature required by the technology after the injection molding is completed; the existing inserts The material is generally steel or copper alloy. Although copper alloy has a higher heat conduction efficiency than steel and can conduct heat more efficiently, the hardness of copper alloy is lower than steel, so only short and simple cooling water channels can be installed on it. , even cooling water channels cannot be set up on it; although the hardness of steel is relatively large, long and complex cooling water channels can be set up on it, but the thermal conductivity of steel is low and cannot conduct heat efficiently.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide an insert structure and a mold, so as to achieve the purpose of having a greater hardness and a greater thermal conductivity of the insert structure.

In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

The invention provides an insert structure, which includes a first insert, a second insert and a third insert that are nested sequentially from the outside to the inside. The material of the first insert and the third insert has a greater hardness than the second insert. The hardness of the material, the thermal conductivity of the first insert material and the third insert material is less than the thermal conductivity of the second insert material.

Further, part of the second insert is nested in the first insert, and a third insert is embedded in the exposed portion of the second insert outside the first insert.

Further, the second insert is columnar, and the columnar second insert is divided into a liquid storage section, an intermediate section, and a heat dissipation section along the axial direction. The liquid storage section and the intermediate section are embedded in the first insert, and the third insert is Embedded in the middle section and heat dissipation section;

Preferably, the radial dimensions of the liquid storage section, the middle section and the heat dissipation section decrease in sequence.

Further, the first insert is in the shape of a cylinder with a hollow interior and is arranged coaxially with the second insert. The liquid storage section and the middle section of the second insert are located inside the first cylindrical insert and are in line with the first cylindrical insert. The inner walls of the inserts are in close contact with each other.

Further, the third insert is in the shape of a column coaxially arranged with the second insert, and the axial length of the third insert is less than the sum of the lengths of the middle section and the heat dissipation section of the second insert; there is a In the inlaid groove extending along the axial direction and located at the center of the middle section and the heat dissipation section, the third inlaid block is all embedded in the inlaid groove, and the outer peripheral side wall of the third inlaid block is in close contact with the inner wall of the inlaid groove.

Furthermore, the first insert block, the second insert block and the third insert block have overlapping portions in the axial direction of the second insert block, and the overlapping portions of the three insert blocks are provided with radial penetrations in sequence to fixedly connect the three insert blocks. connectors.

Further, the middle section of the second insert is provided with a mounting hole, and the first insert and the third insert are respectively provided with auxiliary mounting holes coaxially corresponding to the mounting holes; the fixing member includes a pin, and the pin is arranged along the first and third inserts. The radial directions of the two insert blocks pass through each mounting hole in sequence.

Further, a cooling flow channel for cooling liquid to flow through is provided inside the second insert.

Further, one end of the second insert is a liquid storage section embedded in the first insert, and a cavity is provided in the liquid storage section. The cavity extends along the axial direction of the columnar second insert, and the cavity is located One side of the end of the second insert is open, and the other end is closed by the middle section of the second insert. The cavity containing the cooling liquid forms a cooling channel.

The invention also provides a mold. The mold is provided with a wall thickness transition zone, and the wall thickness transition zone is provided with the insert structure provided by the above technical solution.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

1. Embed the second insert with greater thermal conductivity into the first insert with greater hardness, and embed the third insert with greater hardness into the second insert. The first insert with greater hardness and the third insert are The three inserts have a supporting effect on the second insert with larger thermal conductivity, so that the insert structure integrates the two advantages of greater hardness and greater thermal conductivity, ensuring that the insert structure has a certain hardness and ensures The insert structure has a certain heat conduction efficiency, thereby improving the cooling efficiency of the mold by the insert structure.

2. A cooling flow channel is provided on the liquid storage section of the second insert with greater thermal conductivity, and the liquid storage section of the second insert with greater thermal conductivity is embedded in the first insert with greater hardness. The insert part supports the liquid storage section of the second insert, and the cooling flow channel contacts and cools the liquid storage section of the second insert, thereby improving the exchange efficiency between the cooling flow channel and the liquid storage section of the second insert, thereby Improve the cooling efficiency of the mold by the insert structure.

Specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Description of the drawings

The drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of an insert structure provided by an embodiment of the present invention;

Figure 2 is a cross-sectional view of an insert structure provided by an embodiment of the present invention.

In the figure: 1-first insert; 11-channel; 111-first channel section; 112-second channel section; 12-inner step; 13-first insert part; 14-second insert part; 2 -The second insert; 21-outer step; 22-liquid storage section; 221-cavity; 23-middle section; 24-heat dissipation section; 3-third insert; 4-connector; 41-pin; 5- Cooling channels.

It should be noted that these drawings and text descriptions are not intended to limit the scope of the invention in any way, but are intended to illustrate the concept of the invention for those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following examples are used to illustrate the present invention. , but are not used to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations of the invention.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

As shown in Figures 1 and 2, the present invention provides an insert structure, which includes a first insert 1, a second insert 2 and a third insert 3 that are nested sequentially from outside to inside. The first insert 1 The hardness of the material of the third insert 3 is greater than the hardness of the material of the second insert 2, and the thermal conductivity of the material of the first insert 1 and the third insert 3 is smaller than the thermal conductivity of the material of the second insert.

In the embodiment of the present invention, the second insert 2 with higher thermal conductivity is embedded in the first insert 1 with higher hardness, and the third insert 3 with higher hardness is embedded in the second insert 2. The larger first insert 1 and the third insert 3 have a supporting effect on the second insert 2 with greater thermal conductivity, so that the insert structure integrates the two advantages of greater hardness and greater thermal conductivity, ensuring It ensures that the insert structure has greater hardness and ensures that the insert structure has greater thermal conductivity;

It should be noted that the first insert block 1, the second insert block 2 and the third insert block 3 are nested in sequence, which can be understood as the second insert block 2 is partially embedded in the first insert block 1, or the second insert block 2 The whole of the third insert 3 is embedded in the first insert 1; the third insert 3 is partially embedded in the first insert 1, or the third insert 3 is entirely embedded in the second insert 2; the material of the second insert 2 is copper or copper. Alloy, the second insert 2 has a greater thermal conductivity; the first insert 1 and the third insert 3 are made of steel, and the first insert 1 and the third insert 3 have greater hardness.

As shown in Figures 1 and 2, in the embodiment of the present invention, part of the second insert 2 is nested in the first insert 1, and the second insert 2 is embedded in the exposed part outside the first insert 1. A third insert 3 is provided.

In the embodiment of the present invention, specifically, the second insert 2 has a first part and a second part, the first part of the second insert 2 is embedded in the first insert 1, and the second part of the second insert 2 is exposed Outside the first insert 1, a third insert 3 is embedded in the second part of the second insert 2;

The second part of the second insert 2 is used to contact the wall thickness transition area of the mold. The first insert 1 provides rigid support to the first part of the second insert 2. The third insert 3 supports the second insert 2. The second part is rigidly supported, so that the module structure has greater thermal conductivity on the basis of greater hardness.

As shown in Figure 2, in the embodiment of the present invention, the second insert 2 is columnar. The columnar second insert is divided into a liquid storage section 22, an intermediate section 23 and a heat dissipation section 24 along the axial direction. The liquid storage section 22 and The middle section 23 is embedded in the first insert 1 , and the third insert 3 is embedded in the middle section 23 and the heat dissipation section 24 .

In the embodiment of the present invention, the second insert is columnar. Along the axial direction of the second insert, the second insert 2 is divided into a liquid storage section 22, a middle section 23 and a heat dissipation section 24. The middle section 23 is located at the liquid storage section. Between the section 22 and the heat dissipation section 24, the liquid storage section 22 can be used to hold cooling liquid for cooling the first insert 1 and the second insert 2; the heat dissipation section 24 is used to contact the wall thickness transition zone of the mold. , used for contact heat dissipation in the wall thickness transition zone of the mold;

The third insert 3 is embedded in the middle section 23 and the heat dissipation section 24. It can be understood that the entire middle section 23 and the entire heat dissipation section 24 are embedded with the third insert 3; part of the middle section 23 is embedded with the third insert. 3. The entire heat dissipation section 24 is embedded with the third insert 3;

As shown in Figure 2, as a preferred solution of the above embodiment, the radial dimensions of the liquid storage section 22, the middle section 23 and the heat dissipation section 24 are successively reduced, reducing the volume of the insert structure and occupying less mold space. , at the same time, it can reduce the use of materials and save costs.

As shown in Figure 2, in the embodiment of the present invention, the first insert 1 is hollow inside and has a cylindrical shape coaxially arranged with the second insert 2. The liquid storage section 22 and the middle section 23 of the second insert 2 are in The inside of the cylindrical first insert is in close contact with the inner wall of the cylindrical first insert 1 .

In the embodiment of the present invention, the first insert 1 is cylindrical. The first insert 1 is provided with a channel 11 along the axial direction. The channel 11 makes the interior of the first insert 1 hollow. The first insert 1 includes a liquid storage device. The first insert part 13 of section 22 and the second insert part 14 provided with an intermediate section 23. The liquid storage section 22 is in close contact with the inner wall of the first insert part 13, and the intermediate section 23 is in contact with the second insert part 13. The inner wall of 14 is in close contact;

The channel 11 includes a first channel section 111 provided in the first insert part 13 and a second channel section 112 provided in the second insert part 14. The liquid storage section 22 is provided in the first channel section 111, and the middle section 23 is located in the second channel section 112; the second channel section 112 is radially narrowed relative to the first channel section 111, that is, the inner wall of the first insert 1 is stepped in the axial direction, and the first insert is narrowing There is an inner step 12, and the middle section 23 is radially narrowed relative to the liquid storage section 22, that is, the outer wall of the second insert is stepped in the axial direction, and the second insert 2 is provided with an outer step 21 at the narrowed place. , the inner step 12 is in contact with the outer step 21, which increases the assembly strength between the first insert 1 and the second insert 2.

As shown in Figure 2, in the embodiment of the present invention, the third insert 3 is in the shape of a column coaxially arranged with the second insert 2, and the axial length of the third insert 3 is smaller than the middle section 23 of the second insert 2. and the length of the heat dissipation section 24; the second insert block 2 is provided with an inlay groove extending along the axial direction and located at the center of the middle section 23 and the heat dissipation section 24, and the third insert block 3 is entirely embedded in the inlay groove. The outer peripheral side wall of the third insert 3 is in close contact with the inner wall of the insert groove.

In the embodiment of the present invention, the axial length of the third insert 3 is less than the sum of the lengths of the middle section 23 and the heat dissipation section 24 of the second insert 2 , and the axial length of the insert groove is shorter than the middle section of the second insert 2 23 and the length of the heat dissipation section 24, that is, the middle section 23 of the second insert block 2 is entirely embedded with the third insert block 3, and the heat dissipation section 24 of the second insert block 2 is partially embedded with the third insert block 3, or , the middle section 23 of the second insert 2 is partially embedded with the third insert 3, and the entire heat dissipation section 24 of the second insert 2 is embedded with the third insert 3. Preferably, the middle section 23 of the second insert 2 is partially embedded. The third insert 3 is embedded, and the heat dissipation sections 24 of the second insert 2 are all embedded with the third insert 3, so that the heat dissipation sections 24 of the second insert 2 can all be rigidly supported by the third insert 3, indirectly enhancing the The hardness of the heat dissipation section 24 of the second insert 2;

The opening of the inlaid groove is at one end of the heat dissipation section 24 of the second insert 2 away from the middle section 23 of the second insert 2. When the third insert 3 is installed, it is inserted into the heat dissipation section 24 of the second insert 2 through the opening of the inlaid groove. Then it is embedded in the middle section 23 of the second insert 2 .

As shown in Figure 2, in the embodiment of the present invention, the first insert 1, the second insert 2 and the third insert 3 have three overlapping portions in the axial direction of the second insert 2, and the three overlap There are connecting parts that penetrate radially in sequence to fixedly connect the three parts.

In the embodiment of the present invention, the third insert 3 is embedded in the middle section 23 of the second insert 2 through the heat dissipation section 24 of the second insert 2 , and the middle section 23 of the second insert 2 is in the first insert 1 inside, that is, the middle section 23 of the second insert 2 is inside the second insert part 14, so that the second insert part 14, the middle section 23 of the second insert 2 and the third insert 3 are within the second insert 2 The three have overlapping portions in the axial direction of Just connect the middle section 23 of the second insert block 2 and the third insert block 3 together;

The second insert part 14, the middle section 23 of the second insert 2 and the third insert 3 are all provided with mounting holes. Specifically, since the middle section 23 of the second insert 2 is embedded in the second insert part 14, The second insert part 14 has an inner wall and an outer wall. The peripheral wall of the second insert part 14 is provided with two opposite first auxiliary mounting holes in the radial direction. The third insert 3 is embedded in the middle of the second insert 2 In the section 23, the middle section 23 of the second insert 2 has an inner wall and an outer wall. The peripheral wall of the second insert 14 is provided with two opposite mounting holes in the radial direction. The third insert is a solid structure. A second auxiliary mounting hole is provided in the radial direction of the three inserts 3, and the two mounting holes, the two first auxiliary mounting holes and the second auxiliary mounting hole are coaxially arranged;

The connector 4 includes a pin 41 that passes through the first auxiliary mounting hole, the mounting hole and the second auxiliary mounting hole to fix the second insert part 14, the middle section 23 of the second insert 2 and the third insert 3; installation When the pin 41 passes through a first auxiliary mounting hole, a mounting hole, a second auxiliary mounting hole, another mounting hole and another first auxiliary mounting hole, the second insert part 14 and the second insert part are connected in sequence. The middle section 23 of 2 and the third insert 3 are fixed together to enhance the firm strength between the second insert and the first insert 1 and the third insert 3, so that the second insert can withstand greater force.

As shown in Figure 2, in the embodiment of the present invention, the insert structure is provided with a cooling channel 5 for containing cooling liquid. Specifically, the interior of the second insert 2 is provided with a cooling channel 5 through which the cooling liquid flows. , by providing cooling channels 5 on the second insert, the cooling channels 5 are used to cool the first insert 1, the second insert 2 and the third insert 3, thereby achieving heat dissipation in the transition zone of the thickness of the mold.

In the embodiment of the present invention, one end of the second insert is a liquid storage section embedded in the first insert. The liquid storage section is provided with a cavity, and the cavity extends along the axial direction of the columnar second insert. , the cavity is open on one side of the end of the second insert and is closed on the other side through the middle section of the second insert. The cavity containing the cooling liquid forms a cooling flow channel.

In the embodiment of the present invention, the liquid storage section 22 of the second insert 2 is provided with a cavity, and the cavity serves as the cooling flow channel 5 for containing cooling liquid. Although the liquid storage section 22 of the second insert 2 is made of a material with a relatively high hardness. The material is small and has a high thermal conductivity. However, since the liquid storage section 22 of the second insert 2 is embedded in the first insert part 13, the first insert part 13 has an impact on the liquid storage section 22 of the second insert 2. Support, therefore, a longer cooling flow channel 5 can be opened on the liquid storage section 22 of the second insert 2;

Since the thermal conductivity of the second insert material is large and the heat transfer efficiency is high, cooling channels 5 are provided on the insert sections of the second insert 2 so that the cooling channels 5 contact and cool the second insert 2 , improve the exchange efficiency between the cooling channel 5 and the second insert 2;

The cavity extends along the axial direction of the first insert part 13, the cavity is open on one side of the end of the second insert 2, and the end of the cavity close to the second insert part 14 is a closed end; the cavity is at The first insert part 13 extends along the axial direction and extends close to the second insert part 14 to maximize the length of the cooling flow channel 5 and improve the cooling efficiency of the cooling flow channel 5;

One end of the cavity close to the second insert 2 is a closed end, and the end opposite to the closed end is an open end. The open end can be used as the inlet and outlet of the cooling flow channel 5, that is, the cooling liquid enters and exits through the inlet and outlet for cooling. In the flow channel 5, after the coolant enters the cooling flow channel 5, a plug can be used to block the inlet and outlet, so that the cooling flow channel 5 is a closed cooling flow channel 5.

To sum up, when the insert structure is installed, the second insert 2 enters the second insert part 14 from the first insert part 13, and the reduced diameter part of the second insert 2 is in contact with the first insert 1 The reducing part offsets, the third insert 3 is embedded into the middle section 23 of the second insert 2 through the heat dissipation section 24 of the second insert 2, and the pin 41 passes through a first auxiliary mounting hole, a mounting hole, and a third in turn. Two auxiliary mounting holes, another mounting hole and another first auxiliary mounting hole fixedly connect the first insert 1, the second insert 2 and the third insert 3.

The invention also provides a mold, the mold is provided with a wall thickness transition zone, and the insert structure is located on the wall thickness transition zone;

Specifically, one end of the third insert 3 away from the second insert part 14 is in contact with the wall thickness transition zone. Since the insert structure is provided on the wall thickness transition zone, the insert structure integrates greater hardness and greater thermal conductivity. The two advantages ensure that the insert structure has a certain hardness and a certain heat conduction efficiency, thereby improving the cooling efficiency of the mold by the insert structure.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above in preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology of this patent Without departing from the scope of the technical solution of the present invention, personnel can make some changes or modify the above-mentioned technical contents into equivalent embodiments with equivalent changes. In essence, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the present invention.

Claims (9)

1. An insert structure, characterized in that it includes a first insert, a second insert and a third insert that are nested in sequence from the outside to the inside. The hardness of the material of the first insert and the third insert is greater than that of the third insert. The hardness of the second insert material, the thermal conductivity of the first insert material and the third insert material is smaller than the thermal conductivity of the second insert material; Part of the second insert is nested in the first insert, and a third insert is embedded in the exposed portion of the second insert outside the first insert; The second insert is columnar, and the second columnar insert is divided into a liquid storage section, a middle section and a heat dissipation section along the axial direction. The liquid storage section and the middle section are embedded in the first insert, and the third insert is embedded in the first insert. In the middle section and heat dissipation section. 2. The insert structure according to claim 1, characterized in that the radial dimensions of the liquid storage section, the intermediate section and the heat dissipation section decrease in sequence. 3. The insert structure according to claim 1, characterized in that the first insert is hollow inside and has a cylindrical shape coaxially arranged with the second insert, and the liquid storage section and the middle section of the second insert are in the cylindrical shape. The inside of the cylindrical first insert is in close contact with the inner wall of the cylindrical first insert. 4. The insert structure according to claim 1, wherein the third insert is in the shape of a column coaxially arranged with the second insert, and the axial length of the third insert is smaller than the middle section and the second insert. The sum of the lengths of the heat dissipation sections; the second insert block is provided with an inlaid groove extending along the axial direction and located at the center of the middle section and the heat dissipation section. The third insert block is all embedded in the inlaid groove. The outer periphery of the third insert block The side wall is in close contact with the inner wall of the inlaid groove. 5. The insert structure according to claim 1, characterized in that the first insert, the second insert and the third insert have three overlapping portions in the axial direction of the second insert, and the three overlap portions There are connecting parts that penetrate radially in sequence to fixedly connect the three parts. 6. The insert structure according to claim 5, characterized in that the middle section of the second insert is provided with a mounting hole, and the first insert and the third insert are respectively provided with coaxial holes corresponding to the mounting holes. Auxiliary mounting holes are opened; the connecting piece includes pins, and the pins pass through each mounting hole in sequence along the radial direction of the second insert. 7. The insert structure according to any one of claims 1 to 6, characterized in that a cooling flow channel for cooling liquid to flow is provided inside the second insert. 8. The insert structure according to claim 7, wherein one end of the second insert is a liquid storage section embedded in the first insert, and a cavity is provided in the liquid storage section. The cylindrical second insert extends along the axial direction. The cavity is open on one side of the end of the second insert and is closed on the other side through the middle section of the second insert. The cavity contains the cooling liquid. Cooling channels. 9. A mold, the mold is provided with a wall thickness transition zone, characterized in that the wall thickness transition zone is provided with the insert structure according to any one of claims 1-8.