CN220576515U - Hot nozzle cover, hot nozzle and hot runner system - Google Patents
Hot nozzle cover, hot nozzle and hot runner system Download PDFInfo
- Publication number
- CN220576515U CN220576515U CN202322186712.4U CN202322186712U CN220576515U CN 220576515 U CN220576515 U CN 220576515U CN 202322186712 U CN202322186712 U CN 202322186712U CN 220576515 U CN220576515 U CN 220576515U
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- Prior art keywords
- heat
- nozzle
- connecting portion
- hot nozzle
- hot
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- 239000000463 material Substances 0.000 claims abstract description 29
- 239000012774 insulation material Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 22
- 239000000919 ceramic Substances 0.000 claims description 9
- 235000015111 chews Nutrition 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 abstract description 31
- 229920003023 plastic Polymers 0.000 abstract description 31
- 239000011810 insulating material Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 7
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model belongs to the technical field of hot runners and provides a hot nozzle cover, a hot nozzle and a hot runner system, wherein the hot nozzle cover can be connected to the head of the hot nozzle so as to position the hot nozzle and a die core, the hot nozzle cover comprises a connecting part and a positioning part which are connected up and down, the connecting part can be connected with the head, the outer wall of the positioning part is abutted to the inner wall of the die core so as to limit the hot nozzle to move along the radial direction of the hot nozzle, thereby the hot nozzle and the die core can be positioned, and at least the part of the positioning part, which is abutted to the die core, is made of a heat insulation material. According to the utility model, the hot nozzle cover is divided into the connecting part and the positioning part, the material of the part, which is abutted against the die core, of the positioning part is replaced by the heat-insulating material, and when the positioning part is positioned with the die core, the heat loss of the positioning part of the heat-insulating material can be reduced, so that the molten plastic is kept in a molten state, the generation of cold materials is avoided, and the material of the positioning part is replaced by the heat-insulating material, thereby saving the production cost.
Description
Technical Field
The utility model relates to the technical field of hot runners, in particular to a hot nozzle cover, a hot nozzle and a hot runner system.
Background
At present, the injection mold commonly adopted in the injection industry is a hot nozzle injection mold, and compared with a common mold, the quality of a plastic product injected by a hot runner system is higher, and the hot runner system has the advantages of saving raw materials, improving production efficiency, being high in automation degree and the like.
As shown in fig. 1 and 2, the hot nozzle is disposed inside the mold core 100, the hot nozzle includes a hot nozzle body and a head, and a gap is disposed between the outer wall of the hot nozzle body and the mold core 100, so as to prevent heat loss when the molten plastic flows through the hot nozzle body. The hot nozzle cover is connected with the head, and the outer wall of the hot nozzle cover is mutually abutted with the inner wall of the die core 100 so as to achieve the sealing and positioning of the hot nozzle. The heating device is arranged outside the main body of the hot nozzle so as to keep the plastic in a molten state. However, since the outer wall of the hot nozzle cover is abutted against the inner wall of the mold core 100, it is inconvenient to provide a heating device on the outer wall of the hot nozzle cover, and the molten state plastic flow through the hot nozzle cover needs to be kept in the molten state, and at this time, heat is mainly transferred to the hot nozzle cover by means of the heat at the hot nozzle.
The existing hot nozzle cover is made of alloy steel, the heat conductivity coefficient of the alloy steel is about 60W/m.K, and because the heat conductivity coefficient of the alloy steel is large, heat loss of molten plastic is serious when the molten plastic flows through the hot nozzle cover, the temperature of the molten plastic is reduced, so that cold materials appear, the cold materials possibly cause the situation that the molten plastic flows through the hot nozzle cover to be blocked, at the moment, the plastic in the hot nozzle main body is always in a heating state, the time is too long, and the carbonization is easy, so that the appearance of a product is affected.
Therefore, the above-described problems are to be solved.
Disclosure of Invention
The utility model aims to provide a hot nozzle cover, a hot nozzle and a hot runner system, so as to avoid serious heat loss when molten plastic flows through the hot nozzle cover, and further avoid cold materials.
To achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a lid is chewed to heat, can connect in the head that the heat chews, so that the heat chews and mould benevolence location, the heat chews the connecting portion and the locating part that link to each other about the lid includes, connecting portion can with the head is connected, the outer wall butt of locating part in the inner wall of mould benevolence is in order to restrict the heat chews the edge the heat chews radial movement, thereby can make the heat chew with the mould benevolence location, be used for in the locating part at least with the material of the position of mould benevolence butt is the heat preservation material.
Preferably, the heat-insulating material is zirconia ceramic, silica ceramic or graphene ceramic composite material.
Preferably, the connecting part and the positioning part are detachably connected.
Preferably, a first connecting portion is arranged at the end of the connecting portion, a second connecting portion is arranged at the end of the positioning portion, the first connecting portion is matched with the second connecting portion, and the first connecting portion is connected with the second connecting portion in a sealing mode.
Preferably, the first connecting portion is capable of wrapping a part of the positioning portion in an axial direction of the positioning portion.
Preferably, the connecting portion and the positioning portion are integrally formed.
The hot nozzle comprises a hot nozzle main body and a head, wherein the hot nozzle main body is arranged in the die core, and the head is connected with the hot nozzle cover.
Preferably, the hot nozzle further comprises a temperature sensing wire, and the temperature sensing wire is sleeved outside the hot nozzle cover.
Preferably, the heating nozzle further comprises a plurality of heating devices, the heating devices are uniformly distributed outside the heating nozzle main body along the axis direction of the heating nozzle main body, and the heating devices can heat the heating nozzle main body.
A hot runner system comprising the above-described hot nozzle.
The utility model has the beneficial effects that:
according to the hot nozzle cover, the hot nozzle and the hot runner system provided by the utility model, the hot nozzle cover is divided into the connecting part and the positioning part, the material of the part, which is in contact with the die core, of the positioning part is replaced by the heat-insulating material, and the positioning part of the heat-insulating material adopted when the positioning part is positioned with the die core can reduce heat loss, so that the plastic in a molten state is kept in a molten state, the generation of cold materials is avoided, and the material of the positioning part is replaced by the heat-insulating material, so that the production cost can be saved.
Drawings
FIG. 1 is a schematic view of a prior art main runner in a mold core;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of a nozzle in an embodiment of the utility model;
fig. 4 is a schematic view of the structure of a nozzle cover in the embodiment of the present utility model.
In the figure:
100. a mold core;
1. a hot nozzle; 11. a hot nozzle body; 12. a head;
2. a hot nozzle cover; 21. a connection part; 211. a first connection portion; 2111. a groove; 22. a positioning part; 221. a second connecting portion;
3. a temperature sensing line; 4. a heating device.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", etc., azimuth or positional relationship are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of operations, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
In the injection molding process, as shown in fig. 1 and 2, the existing hot nozzle cover 2 is mostly made of alloy steel, the heat conductivity coefficient of the alloy steel is about 60W/m·k, because the heat conductivity coefficient of the alloy steel is large, heat loss of molten plastic is serious when the molten plastic flows through the hot nozzle cover 2, cold materials are easy to appear in the molten plastic, the cold materials possibly cause blockage of the molten plastic when the molten plastic flows through the hot nozzle cover 2, the plastic in the hot nozzle main body 11 is always in a heating state, the time is too long, and carbonization is easy, so that the appearance of a product is affected.
In order to solve the above technical problems, as shown in fig. 3 and 4, the hot runner system provided in this embodiment includes a mold core 100, a hot nozzle 1 and a hot nozzle cover 2, wherein the hot nozzle 1 is disposed inside the mold core 100, and the hot nozzle cover 2 is used for sealing and positioning, so as to prevent the hot nozzle 1 from moving inside in the radial direction of the hot nozzle 1.
Based on the above, as shown in fig. 3 and 4, a heat nozzle 1 is provided in this embodiment, the heat nozzle 1 includes a heat nozzle body 11 and a head 12, the heat nozzle body 11 is disposed in the mold core 100, and the head 12 is connected with the heat nozzle cover 2. As shown in FIG. 3, the whole section of the nozzle body 11 is positioned inside the mold core 100 and is in a clearance state, so that heat loss is prevented when molten plastic flows through the nozzle body 11. It can be understood that the main body 11 of the hot nozzle is not contacted with the mold core 100, so that the heat loss of the main body 11 of the hot nozzle caused by the contact of the main body 11 of the hot nozzle and the mold core 100 can be prevented, meanwhile, in order to prevent the main body 11 of the hot nozzle from radial movement in the mold core 100, a positioning groove is formed in the mold core 100, the hot nozzle cover 2 extends into the positioning groove, and the outer wall of the hot nozzle cover 2 is abutted with the inner wall of the positioning groove to form positioning, so as to limit the radial deviation of the main body 11 of the hot nozzle. However, since the heating device 4 is not arranged at the hot nozzle cover 2 and the hot nozzle cover 2 is made of alloy steel with high heat conductivity, the temperature of the mold core 100 is lower than that of the hot nozzle cover 2, so that cold materials are easy to appear when plastics flow through the hot nozzle cover 2.
In this embodiment, the heat nozzle 1 further includes a temperature sensing wire 3, the temperature sensing wire 3 is sleeved outside the connecting portion 21, the set temperature sensing wire 3 can be used to monitor the temperature of the plastic at the connecting portion 21, so as to avoid cold materials caused by the fact that the temperature of the plastic in the connecting portion 21 is far less than that of the plastic in the heat nozzle main body 11. The temperature sensing wire 3 is in the prior art, and is not described in detail in this embodiment.
Further, the heat nozzle 1 further comprises a plurality of heating devices 4, the heating devices 4 are uniformly distributed outside the heat nozzle main body 11 along the axis direction of the heat nozzle main body 11, and the heating devices 4 can heat the heat nozzle main body 11. Specifically, the heating device 4 comprises a heating wire wound on the outer part of the hot nozzle main body 11, so that the plastic in the hot nozzle main body 11 can be heated conveniently, and the temperature inside the hot nozzle main body 11 is prevented from being lower than the melting temperature of the plastic.
Based on the above, in this embodiment, the heat nozzle cover 2 is provided, the heat nozzle cover 2 can be connected to the head 12 of the heat nozzle 1, so that the heat nozzle 1 and the mold core 100 are positioned, the heat nozzle cover 2 includes a positioning portion 22 and a connecting portion 21 that are connected up and down, the connecting portion 21 is used for connecting with the head 12, the outer wall of the positioning portion 22 is abutted to the inner wall of the mold core 100, so as to limit the heat nozzle body 11 to move radially along the heat nozzle body 11, so that the heat nozzle 1 and the mold core 100 can be positioned, and the material of the abutting portion of the positioning portion 22 and the mold core 100 is a heat insulation material. It can be understood that the positioning portion 22 extends into the positioning groove, and the outer wall of the positioning portion 22 and the inner wall of the positioning groove are abutted to each other, so as to limit the radial offset of the nozzle main body 11, and the nozzle cover 2 is made of a heat-insulating material with a small heat conductivity coefficient, so that the heat loss of the plastic when flowing through the nozzle cover 2 can be reduced.
Particularly, the thermal conductivity coefficient of the contact portion between the positioning portion 22 and the positioning groove is smaller than 60W/m·k, wherein the thermal insulation material is preferably a low-cost material such as zirconia ceramic, silica ceramic or graphene ceramic composite material, so that the cost can be reduced, the specific material can be selected according to the actual requirement, and the embodiment is not particularly limited. As shown in fig. 3, the positioning portion 22 is partially located in the positioning groove, so the material of the positioning portion 22 placed in the positioning groove may be selected to be a material with low thermal conductivity, or the material of the entire positioning portion 22 may be selected to be a material with low thermal conductivity, which is not particularly limited in this embodiment.
In this embodiment, as shown in fig. 3 and 4, the connection portion 21 and the positioning portion 22 are detachably connected, specifically, a bump is provided at one end of the positioning portion 22, a corresponding groove is provided at an end of the connection portion 21, and the bump and the groove are adapted to achieve positioning between the connection portion 21 and the positioning portion 22. When the nozzle cap 2 is mounted, the end of the connecting portion 21 away from the positioning portion 22 is screwed to the end of the head 12, and after the connection, the nozzle body 11 and the connecting portion 21 can be further connected by positioning segment welding, so that the connection strength can be enhanced. It can be understood that, along the plastic conveying direction, the molten plastic passes through the hot nozzle main body 11 and is discharged from the hot nozzle cover 2, when passing through the hot nozzle cover 2, the plastic passes through the connecting portion 21 and then passes through the positioning portion 22, the hot nozzle cover 2 is divided into two parts, namely the connecting portion 21 and the positioning portion 22, and under the condition that the total length of the hot nozzle cover 2 is unchanged, the distance of a single section in the axial direction is shortened, and deformation is not easy to occur. In addition, as shown in fig. 3, the connecting portion 21 is kept in a hollow state when the inside of the mold core 100, so that in order to save the cost, the material of the connecting portion 21 may be a material with a large thermal conductivity such as alloy steel or the like and low cost.
Preferably, as shown in fig. 4, the end of the connecting portion 21 is provided with a first connecting portion 211, the end of the positioning portion 22 is provided with a second connecting portion 221, the first connecting portion 211 is adapted to the second connecting portion 221, and the first connecting portion 211 is hermetically connected to the second connecting portion 221. The first connecting portion 211 and the second connecting portion 221 can avoid deformation of the positioning portion 22 caused by impact force generated during transportation of molten plastic. In addition, the first connecting portion 211 and the second connecting portion 221 can be partially overlapped, not only shortening the axial length of the nozzle cover 2, but also enhancing the connection strength of the connecting portion 21 and the positioning portion 22, so that the nozzle cover 2 is not easily deformed in the axial direction.
Specifically, a groove 2111 is formed at an end of the first connection portion 211 facing the second connection portion 221, and the second connection portion 221 is screwed into the groove 2111. After the second connection portion 221 is connected to the first connection portion 211, it is further connected to the first connection portion 211 by soldering, silver soldering, or the like, so that the connection strength between the connection portion 21 and the positioning portion 22 is ensured, and the positioning portion 22 is prevented from falling off. After the first connecting portion 211 and the second connecting portion 221 are connected, the inner wall of the second connecting portion 221 is kept flush with the inner wall of the connecting portion 21, so as to avoid blocking of molten plastic during transportation. In some other possible embodiments, the first connection portion 211 and the second connection portion 221 may also use other existing connection manners, which is not specifically limited in this embodiment.
In particular, the connection portion 21 is integrally formed with the first connection portion 211; the positioning portion 22 is integrally formed with the second connecting portion 221. It can be understood that the material of the connecting portion 21 is consistent with the thermal conductivity of the positioning portion 22, and the connecting portion 21 and the first connecting portion 211 are integrally formed, so as to enhance the connection strength between the connecting portion 21 and the first connecting portion 211. The thermal conductivity coefficients of the positioning portion 22 and the second connection portion 221 are identical, and the positioning portion 22 and the second connection portion 221 are integrally formed, so that the connection strength of the positioning portion 22 and the second connection portion 221 can be enhanced.
In some other possible embodiments, the connecting portion 21 and the positioning portion 22 are integrally formed. It is understood that the thermal conductivity coefficients of the connecting portion 21 and the positioning portion 22 are the same, and the connecting portion 21 and the positioning portion 22 are made of materials with thermal conductivity coefficients smaller than 60W/m·k, so that the connecting portion 21 and the positioning portion 22 are integrally formed during processing, thereby facilitating processing of the entire Duan Reju cover 2.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. The utility model provides a lid is chewed to heat, can connect in head (12) that heat chewed (1), so that heat chews (1) and mould benevolence (100) location, characterized in that, heat chews connecting portion (21) and locating part (22) that lid (2) link to each other about including, connecting portion (21) can with head (12) are connected, the outer wall butt of locating part (22) in the inner wall of mould benevolence (100), in order to restrict heat chews (1) follow heat chews (1) radial movement, thereby can make heat chew (1) with the material of mould benevolence (100) location, be used for in locating part (22) at least with the material of the position of mould benevolence (100) butt is the heat preservation material.
2. The thermal nozzle cover of claim 1, wherein the thermal insulation material is zirconia ceramic, silica ceramic or graphene ceramic composite.
3. A hot nozzle cap according to claim 1, characterized in that the connection (21) and the positioning (22) are detachably connected.
4. A hot nozzle cover according to claim 3, characterized in that the end of the connecting portion (21) is provided with a first connecting portion (211), the end of the positioning portion (22) is provided with a second connecting portion (221), the first connecting portion (211) is adapted to the second connecting portion (221), and the first connecting portion (211) is hermetically connected to the second connecting portion (221).
5. A hot nozzle cap according to claim 4, wherein said first connecting portion (211) is capable of wrapping a portion of said positioning portion (22) along an axial direction of said positioning portion (22).
6. A hot nozzle cap according to claim 1, characterized in that the connecting portion (21) and the positioning portion (22) are integrally formed.
7. A hot nozzle characterized by comprising a hot nozzle main body (11) and a head (12), wherein the hot nozzle main body (11) is arranged in the die core (100), and the head (12) is connected with the hot nozzle cover (2) according to any one of the claims 1-6.
8. A heat nozzle according to claim 7, wherein the heat nozzle (1) further comprises a temperature sensing wire (3), and the temperature sensing wire (3) is sleeved outside the heat nozzle cover (2).
9. A nozzle according to claim 7, characterized in that the nozzle (1) further comprises a plurality of heating means (4), the heating means (4) being uniformly distributed outside the nozzle body (11) in the axial direction of the nozzle body (11), and the heating means (4) being capable of heating the nozzle body (11).
10. A hot runner system, characterized by comprising a nozzle (1) according to any one of the preceding claims 7-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322186712.4U CN220576515U (en) | 2023-08-15 | 2023-08-15 | Hot nozzle cover, hot nozzle and hot runner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322186712.4U CN220576515U (en) | 2023-08-15 | 2023-08-15 | Hot nozzle cover, hot nozzle and hot runner system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220576515U true CN220576515U (en) | 2024-03-12 |
Family
ID=90119878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322186712.4U Active CN220576515U (en) | 2023-08-15 | 2023-08-15 | Hot nozzle cover, hot nozzle and hot runner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220576515U (en) |
-
2023
- 2023-08-15 CN CN202322186712.4U patent/CN220576515U/en active Active
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| GR01 | Patent grant |