CN220946397U - Hot runner hot nozzle structure of injection mold - Google Patents
Hot runner hot nozzle structure of injection mold Download PDFInfo
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- CN220946397U CN220946397U CN202322451857.2U CN202322451857U CN220946397U CN 220946397 U CN220946397 U CN 220946397U CN 202322451857 U CN202322451857 U CN 202322451857U CN 220946397 U CN220946397 U CN 220946397U
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- hot
- heat
- hot nozzle
- head
- nozzle
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- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000010008 shearing Methods 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 description 5
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 229910052790 beryllium Inorganic materials 0.000 description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a hot runner hot nozzle structure of an injection mold, which comprises a valve needle, a hot nozzle body, a hot nozzle heat conduction head, a fixing cap and a high-temperature-resistant rubber heat insulation cap, wherein the valve needle is arranged on the fixing cap; the heat-resistant rubber heat-insulating cap is sleeved on the heat-conducting head of the heat nozzle, the lower end surfaces of the heat-resistant rubber heat-insulating cap and the heat-conducting head are respectively provided with a corresponding opening, and the openings are also outlets of the flow channels; one end of the valve needle is inserted into the runner in a sliding manner, a needle head is arranged at one end of the inserted runner, and the needle head is communicated with a gate of an injection mold cavity through an opening; wherein the thermal nozzle heat conducting head is made of titanium alloy. According to the utility model, the material of the thermal nozzle heat conducting head is replaced by the titanium alloy material, and the high-temperature-resistant rubber heat insulating cap is added on the thermal nozzle heat conducting head, so that the heat conduction elasticity of the titanium alloy material is small, the heat transfer is low, the shearing heat when raw materials are injected into the die cavity is reduced, and the temperature balance of the whole die cavity is ensured, thereby solving the problem of pattern at the gate position of a product.
Description
Technical Field
The utility model relates to the technical field of hot runner molds, in particular to a hot runner hot nozzle structure of an injection mold.
Background
The hot runner is also called runnerless, which means that the plastic in the runner is not solidified after each injection, and the water gap in the runner is not needed to be separated when the plastic product is demoulded. The plastic in the runner is not solidified, so that the runner is still smooth in the next injection, and the extension of the nozzle of the injection molding machine is realized; the hot nozzle is made of beryllium bronze, the beryllium bronze is strong in heat conductivity, heat is generated when the hot nozzle is preheated, the specificity of a hot runner structure is utilized, the long-time production temperature is higher and higher under the condition that the hot nozzle is not cooled, as the hot nozzle is contacted with a mold cavity, the mold temperature is higher and higher at the local position of a gate of the mold cavity along with the increasing number of the mold cavities, and the shearing heat is high when raw materials are injected into the mold cavity, so that obvious patterns appear at the gate position of a product.
Disclosure of utility model
In order to solve the technical problems in the prior art, the utility model provides a hot runner hot nozzle structure of an injection mold, which has the following specific technical scheme:
The hot runner hot nozzle structure of the injection mold comprises a valve needle, a hot nozzle body, a hot nozzle heat conduction head, a fixing cap and a high-temperature-resistant rubber heat insulation cap, wherein a runner is arranged in the hot nozzle body; the heat conducting head of the hot nozzle is arranged at the lower end of the hot nozzle body through the fixing cap, the high-temperature-resistant rubber heat insulation cap is sleeved on the heat conducting head of the hot nozzle, the lower end surfaces of the heat conducting head and the heat conducting head are respectively provided with a corresponding opening, and the openings are also outlets of the flow channels; one end of the valve needle is inserted into the runner in a sliding manner, a needle head is arranged at one end of the inserted runner, and the needle head is communicated with a gate of an injection mold cavity through an opening; wherein the material of the thermal nozzle heat conducting head is titanium alloy material.
Further, the inner wall surface of the lower end of the thermal nozzle body is provided with two-stage stepped grooves, wherein the stepped groove close to the end surface of the lower end of the thermal nozzle body is a first stepped groove, and the stepped groove above the first stepped groove and adjacent to the first stepped groove is a second stepped groove; the depth of the first step groove is larger than that of the second step groove, and the groove wall of the first step groove is of a thread structure.
Further, the outer side wall of the thermal nozzle heat conducting head is provided with three steps, the step close to the head of the thermal nozzle heat conducting head is a first step, the step close to the tail end face of the thermal nozzle heat conducting head is a third step, the step connected between the first step and the third step is a second step, and the height of the three steps is specifically as follows: the height of the third step is larger than that of the second step and larger than that of the first step; the third step is connected with the second step by a right angle slope, and the second step is connected with the first step by a slope.
Further, the third step of the thermal nozzle heat conducting head is fit with the second step groove, the corresponding end faces are propped against each other, and an open annular cavity is formed between the second step and the first step groove of the thread structure.
Further, the outer side wall of the fixing cap is provided with a thread and a protruding structure, wherein the thread is close to the tail end face of the fixing cap and is matched with the thread structure of the groove wall of the first step groove, and the protruding structure is close to the head of the fixing cap at the front side of the thread; the inner wall surface of the fixed cap is provided with a limit slope which is matched with the slope angle; the fixing cap is rotationally embedded into the annular cavity through threads and is connected with the hot nozzle body, meanwhile, the fixing cap is sleeved at the lower end of the hot nozzle heat conducting head, a limiting slope of the fixing cap is abutted against a slope between the second step and the first step, the tail end face of the fixing cap is abutted against a right-angle slope, and the protruding structure is abutted against the lower end face of the hot nozzle body.
Further, the valve needle is in interference fit with the opening of the high-temperature-resistant rubber heat-insulating cap, and the needle is in clearance fit with the pouring gate.
Further, the hot nozzle body is also externally connected with a heating device.
Further, a valve needle fixing sleeve is sleeved at the position of the valve needle outside the hot nozzle body, and a valve needle fixing sleeve nut is connected to the outer side of the valve needle fixing sleeve.
The utility model has the advantages that:
1. According to the utility model, the material of the thermal nozzle heat conducting head is replaced by the titanium alloy material, and the high-temperature-resistant rubber heat insulating cap is added on the thermal nozzle heat conducting head, so that the heat conduction elasticity of the titanium alloy material is small, the heat transfer is low, the shearing heat when raw materials are injected into the die cavity is reduced, the temperature balance of the whole die cavity of the die is ensured, and the problem of pattern at the gate position of a product is solved.
2. The thermal nozzle heat conducting head is connected with the thermal nozzle body through the fixing cap, so that flexible disassembly and replacement can be conveniently performed by workers, and the application space of the injection mold and corresponding equipment is greatly improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a hot runner hot nozzle configuration of an injection mold according to the present utility model;
FIG. 2 is a schematic cross-sectional view of the hot runner hot nozzle structure of the present utility model applied to a mold;
In the figure, 1-valve needle, 2-thermal nozzle heat conduction head, 3-high temperature resistant rubber heat insulation cap, 4-fixed cap, 5-valve needle fixed sleeve, 6-valve needle fixed sleeve nut, 7-heating device, 8-thermal nozzle body, 9-hot runner flow dividing plate, 10-plug, 11-runner, 12-die cavity and 13-main runner.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1, a hot runner hot nozzle structure of an injection mold according to the present utility model includes: the valve needle 1, the hot nozzle body 8, the hot nozzle heat conduction head 2, the fixed cap 4 and the high temperature resistant rubber heat insulation cap 3.
A flow passage is arranged in the hot nozzle body 8; the heat conducting head 2 of the hot nozzle is arranged at the lower end of the hot nozzle body 8 through the fixing cap 4, the high-temperature-resistant rubber heat insulation cap 3 is sleeved on the heat conducting head 2 of the hot nozzle, the lower end surfaces of the two heat conducting heads are respectively provided with a corresponding opening, and the openings are also outlets of the flow channels; one end of the valve needle 1 is slidingly inserted into the runner, a needle is arranged on one end of the inserted runner, the needle is communicated to a sprue of the injection mold cavity 12 through an opening, the shape of the needle is matched with the shape of the sprue in the cavity 12, and the needle is used for closing or opening the sprue.
In the technical scheme, the valve needle 1 is in interference fit with the opening of the high-temperature-resistant rubber heat-insulating cap 3, so that glue leakage can be prevented; the needle is preferably in clearance fit with the gate so that the valve needle 1 can slide smoothly to open or close the gate smoothly; the gap is not required to be too large to ensure tightness, so that glue leakage is further prevented.
The inner wall surface of the lower end of the thermal nozzle body 8 is provided with two-stage stepped grooves, specifically, the stepped groove close to the end surface of the lower end of the thermal nozzle body 8 is a first stepped groove, and the stepped groove above the first stepped groove and adjacent to the first stepped groove is a second stepped groove; the depth of the first step groove is larger than that of the second step groove, and the groove wall of the first step groove is of a thread structure.
The outer side wall of the thermal nozzle heat conducting head 2 is provided with three steps, a step close to the head of the thermal nozzle heat conducting head 2 is a first step, a step close to the tail end face of the thermal nozzle heat conducting head 2 is a third step, a step connected between the first step and the third step is a second step, and the height of the three steps is specifically as follows: the height of the third step is larger than that of the second step and larger than that of the first step; the third step is connected with the second step by a right angle slope, and the second step is connected with the first step by a slope; after the tail of the thermal nozzle heat conducting head 2 is inserted into the lower end of the thermal nozzle body 8, the third step is matched and attached with the second step groove, namely, the width distance of the surfaces of the third step and the second step groove is equal, the corresponding end faces are propped against each other, and an open annular cavity is formed between the second step and the first step groove of the thread structure.
The outer side wall of the fixing cap 4 is provided with a thread and a protruding structure, wherein the thread is close to the tail end face of the fixing cap and is matched with the thread structure of the groove wall of the first step groove, and the protruding structure is close to the head of the fixing cap 4 at the front side of the thread; the inner wall surface of the fixed cap 4 is provided with a limit slope which is matched with the slope angle; the fixing cap 4 is rotationally embedded into the annular cavity through threads and is connected with the hot nozzle body 8, meanwhile, the lower end of the hot nozzle heat conducting head 2 is sleeved with the fixing cap, a limiting slope is attached to a slope between the second step and the first step, the tail end face of the fixing cap 4 is abutted to a right-angle slope, the protruding structure is abutted to the lower end face of the hot nozzle body 8 to limit, excessive rotation of threads is prevented, and loss is caused to parts.
In the above technical scheme, the thermal nozzle heat conduction head 2 is connected with the thermal nozzle body 8 through the fixing cap 4, so that the thermal nozzle heat conduction head can be conveniently and flexibly disassembled and replaced by workers, and the application space of the injection mold and corresponding equipment is greatly improved.
The hot nozzle body 8 is also externally connected with a heating device 7 for heating the runner and the plastic liquid in the runner so as to prevent the plastic liquid from solidifying.
According to the technical scheme of the embodiment, beryllium bronze is adopted as the whole material of the conventional hot nozzle structure, the material of the hot nozzle heat conducting head 2 is replaced by titanium alloy, the high-temperature-resistant rubber heat insulating cap 3 is added on the hot nozzle heat conducting head 2, the heat conducting elasticity of the titanium alloy is small, the heat transfer is low, the shearing heat of raw materials when the raw materials are injected into a die cavity is reduced, the temperature balance of the whole die cavity of the die is ensured, and therefore the problem of patterns at the pouring gate position of a product is solved.
Referring to fig. 2, in the application scenario of the present embodiment, a needle fixing sleeve 5 is further sleeved at the needle 1 located outside the thermal nozzle body 8, and a needle fixing sleeve nut 6 is connected to the outer side of the needle fixing sleeve 5. The hot runner hot nozzle structure is arranged on a hot runner flow distribution plate 9, a main runner 13 is connected to the middle of the hot runner flow distribution plate 9, a flow distribution channel 11 is transversely arranged in the middle of the hot runner flow distribution plate 9, injection molding slurry flows into the flow distribution channel 11 through the main runner, two ends of the flow distribution channel 11 are blocked through plugs 10, a plurality of flow distribution cavities are arranged at intervals along the flow distribution channel 11 on the upper surface and the lower surface of the hot runner flow distribution plate 9, the flow distribution cavities are divided into an upper cavity and a lower cavity which are communicated with each other by taking the flow distribution channel as a boundary, a valve needle 1 penetrates through the flow distribution cavities, a valve needle fixing sleeve 5 is arranged in the upper cavity after being fastened by a valve needle fixing sleeve nut 6, the upper end of a hot nozzle body 8 is embedded in the lower cavity, the lower end of the hot nozzle body 8 and an integral structure formed by a hot nozzle heat conducting head 2, a fixing cap 4 and a high-temperature-resistant rubber heat insulation cap 3 connected with the lower end of the hot nozzle body 8 are arranged in a mold cavity 12, injection molding slurry flows into the flow distribution channel through the main runner 13, and then stretches out and draws back through the valve needle 1, and opens and closes a gate of the mold cavity 12.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship between the components, the movement condition, etc. in a specific posture, if the specific posture is changed, the directional indicators are correspondingly changed. In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the foregoing detailed description of the utility model has been provided, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, and that certain features may be substituted for those illustrated and described herein. Modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (8)
1. The utility model provides an injection mold hot runner hot nozzle structure, includes needle (1), hot nozzle body (8), hot nozzle heat conduction head (2), fixed cap (4) and high temperature resistant rubber heat insulating cap (3), its characterized in that: a flow passage is arranged in the hot nozzle body (8); the heat conducting head (2) of the hot nozzle is arranged at the lower end of the body (8) of the hot nozzle through the fixing cap (4), the high-temperature-resistant rubber heat insulating cap (3) is sleeved on the heat conducting head (2) of the hot nozzle, the lower end surfaces of the two heat conducting heads are respectively provided with a corresponding opening, and the openings are also outlets of the flow channels; one end of the valve needle (1) is inserted into the runner in a sliding way, a needle is arranged at one end of the inserted runner, and the needle is communicated with a gate of the injection mold cavity (12) through an opening; wherein the material of the thermal nozzle heat conducting head (2) is titanium alloy material.
2. The injection mold hot runner hot nozzle structure according to claim 1, wherein: the inner wall surface of the lower end of the thermal nozzle body (8) is provided with two-stage stepped grooves, wherein the stepped groove close to the end surface of the lower end of the thermal nozzle body (8) is a first stepped groove, and the stepped groove above the first stepped groove and adjacent to the first stepped groove is a second stepped groove; the depth of the first step groove is larger than that of the second step groove, and the groove wall of the first step groove is of a thread structure.
3. The injection mold hot runner hot nozzle structure according to claim 2, wherein: the outer side wall of the thermal nozzle heat conducting head (2) is provided with three steps, a step close to the head of the thermal nozzle heat conducting head (2) is a first step, a step close to the tail end face of the thermal nozzle heat conducting head (2) is a third step, a step connected between the first step and the third step is a second step, and the height of the three steps is specifically as follows: the height of the third step is larger than that of the second step and larger than that of the first step; the third step is connected with the second step by a right angle slope, and the second step is connected with the first step by a slope.
4. An injection mold hot runner hot nozzle structure as defined in claim 3, wherein: the third step of the thermal nozzle heat conducting head (2) is fit with the second step groove, the corresponding end faces are propped against each other, and an open annular cavity is formed between the second step and the first step groove of the thread structure.
5. The injection mold hot runner hot nozzle structure according to claim 4, wherein: the outer side wall of the fixing cap (4) is provided with a thread and a protruding structure, wherein the thread is close to the tail end face of the fixing cap and is matched with the thread structure of the wall of the first-stage groove, and the protruding structure is close to the head of the fixing cap (4) at the front side of the thread; the inner wall surface of the fixed cap (4) is provided with a limit slope which is matched with the slope angle; the fixing cap (4) is rotationally embedded into the annular cavity through threads and is connected with the hot nozzle body (8), meanwhile, the annular cavity is sleeved at the lower end of the hot nozzle heat conducting head (2), a limiting slope is attached to a slope between the second step and the first step, the tail end face of the fixing cap (4) is abutted to a right-angle slope, and the protruding structure is abutted to the lower end face of the hot nozzle body (8).
6. The injection mold hot runner hot nozzle structure according to claim 1, wherein: the valve needle (1) is in interference fit with the opening of the high-temperature-resistant rubber heat-insulating cap (3), and the needle is in clearance fit with the pouring gate.
7. The injection mold hot runner hot nozzle structure according to claim 1, wherein: the hot nozzle body (8) is also externally connected with a heating device (7).
8. The injection mold hot runner hot nozzle structure according to claim 1, wherein: the valve needle (1) positioned outside the hot nozzle body (8) is also sleeved with a valve needle fixing sleeve (5), and the outer side of the valve needle fixing sleeve (5) is connected with a valve needle fixing sleeve nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322451857.2U CN220946397U (en) | 2023-09-11 | 2023-09-11 | Hot runner hot nozzle structure of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322451857.2U CN220946397U (en) | 2023-09-11 | 2023-09-11 | Hot runner hot nozzle structure of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220946397U true CN220946397U (en) | 2024-05-14 |
Family
ID=90980151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322451857.2U Active CN220946397U (en) | 2023-09-11 | 2023-09-11 | Hot runner hot nozzle structure of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220946397U (en) |
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2023
- 2023-09-11 CN CN202322451857.2U patent/CN220946397U/en active Active
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| GR01 | Patent grant |