CN104526971A - Pressure-maintaining hot runner nozzle - Google Patents
Pressure-maintaining hot runner nozzle Download PDFInfo
- Publication number
- CN104526971A CN104526971A CN201410739492.6A CN201410739492A CN104526971A CN 104526971 A CN104526971 A CN 104526971A CN 201410739492 A CN201410739492 A CN 201410739492A CN 104526971 A CN104526971 A CN 104526971A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- liquid storage
- column
- storage cavity
- step post
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002347 injection Methods 0.000 claims abstract description 38
- 239000007924 injection Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 2
- 229920003023 plastic Polymers 0.000 abstract description 16
- 239000004033 plastic Substances 0.000 abstract description 16
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000155 melt Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/20—Injection nozzles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Nozzles (AREA)
Abstract
本发明公开了一种带保压功能的热流道喷嘴，包括流道柱体和喷嘴，所述的流道柱体的中心设置有射注通道和存液空腔，所述的喷嘴包括喷头部和套管，所述的套管用螺纹联接在所述的存液空腔的内壁上，所述的喷头部设置有注射口，所述的套管中心设置有通液腔，所述的存液空腔上设置有柱塞，所述的第四台阶柱可深入所述的射注通道，所述的第二台阶柱上套设有弹簧，所述的弹簧的一端可抵靠在所述的套管上，另一端可抵靠在所述的第三台阶柱的柱面上；具有如下有益效果：柱塞在弹簧的作用下向后运动，第四台阶柱堵塞射注通道，截住塑料熔液的流动通道，比原来的通过注射口冷却凝固的塑料保压的性能要好很多。
The invention discloses a hot runner nozzle with pressure maintaining function, which comprises a flow channel column and a nozzle, the center of the flow channel column is provided with an injection channel and a liquid storage cavity, and the nozzle includes a nozzle head and a sleeve, the sleeve is threadedly connected to the inner wall of the liquid storage cavity, the nozzle head is provided with an injection port, the center of the sleeve is provided with a liquid cavity, and the liquid storage The cavity is provided with a plunger, the fourth stepped column can go deep into the injection channel, a spring is sleeved on the second stepped column, and one end of the spring can lean against the described injection channel. On the casing, the other end can lean against the cylindrical surface of the third step column; it has the following beneficial effects: the plunger moves backward under the action of the spring, and the fourth step column blocks the injection channel, intercepting the plastic The flow channel of the molten liquid is much better than the performance of the original plastic that is cooled and solidified through the injection port to maintain pressure.
Description
技术领域 technical field
本发明涉及一种热流道喷嘴，具体是一种带保压功能的热流道喷嘴。 The invention relates to a hot runner nozzle, in particular to a hot runner nozzle with a pressure maintaining function.
背景技术 Background technique
热喷嘴是热流道系统的重要组成部分，常用在注塑行业，热喷嘴的周边设置有加热系统，使得腔体内的塑料熔液一直处于熔化状态，以便在下次注射时可以快速出液。 The hot nozzle is an important part of the hot runner system. It is commonly used in the injection molding industry. There is a heating system around the hot nozzle, so that the plastic melt in the cavity is always in a molten state, so that the liquid can be released quickly in the next injection.
在待机时，喷嘴的中心的通道中的残留塑料熔液一直处于熔化状态，但是喷嘴的注射口中的熔液在待机时是冷却凝固的，从而起到密封和保压的作用，但是其密封和保压性能是有限的，压力稍微一大，塑料熔液就会冲出注射口。 During standby, the residual plastic melt in the channel at the center of the nozzle is always in a molten state, but the melt in the injection port of the nozzle is cooled and solidified during standby, thereby playing the role of sealing and pressure keeping, but its sealing and The pressure holding performance is limited. If the pressure is slightly higher, the plastic melt will rush out of the injection port.
这样就要求保压时减少压力，但是压力变小，可能会造成残留的塑料熔液的密度变小，成型后，零件的局部机械性能变差，是个不利的因素。 In this way, it is required to reduce the pressure when holding the pressure, but the pressure becomes smaller, which may cause the density of the residual plastic melt to become smaller. After molding, the local mechanical properties of the part will deteriorate, which is an unfavorable factor.
发明内容 Contents of the invention
本发明针对现有技术不足，提供一种在待机时，密封和保压作用更好的热流道喷嘴。 The invention aims at the deficiencies of the prior art, and provides a hot runner nozzle with better sealing and pressure maintaining functions during standby.
为了解决上述技术问题，本发明通过下述技术方案得以解决：一种带保压功能的热流道喷嘴，包括流道柱体和喷嘴，所述的流道柱体的中心设置有射注通道和存液空腔，所述的喷嘴包括喷头部和套管，所述的套管用螺纹联接在所述的存液空腔的内壁上，所述的喷头部设置有注射口，所述的套管中心设置有通液腔，所述的注射口、所述的通液腔、所述的存液空腔和所述的射注通道依次相通，所述的流道柱体上设置有多个加热件，所述的存液空腔上设置有柱塞，所述的柱塞依次包括第一台阶柱、第二台阶柱、第三台阶柱和第四台阶柱，所述的第一台阶柱可深入所述的通液腔，所述的第四台阶柱可深入所述的射注通道，所述的第二台阶柱上套设有弹簧，所述的弹簧的一端可抵靠在所述的套管上，另一端可抵靠在所述的第三台阶柱的柱面上。 In order to solve the above technical problems, the present invention is solved by the following technical solutions: a hot runner nozzle with pressure maintaining function, including a runner cylinder and a nozzle, the center of the runner cylinder is provided with an injection channel and The liquid storage cavity, the nozzle includes a spray head and a sleeve, the sleeve is threadedly connected to the inner wall of the liquid storage cavity, the spray head is provided with an injection port, and the sleeve A liquid passage cavity is arranged in the center, and the injection port, the liquid passage chamber, the liquid storage cavity and the injection channel communicate in sequence, and the flow channel column is provided with a plurality of heating A plunger is provided on the liquid storage cavity, and the plunger includes a first stepped column, a second stepped column, a third stepped column and a fourth stepped column in turn, and the first stepped column can be Go deep into the liquid cavity, the fourth step column can go deep into the injection channel, the second step column is covered with a spring, and one end of the spring can lean against the On the casing, the other end can lean against the cylindrical surface of the third stepped column.
所述的存液空腔的内壁上均布设置有若干道作为熔液的流动通道的凹槽。 The inner wall of the liquid storage cavity is uniformly provided with several grooves as flow channels for the melt.
所述的套管的口沿上均布设置有若干道作为熔液的流动通道的斜向缺口。 A number of oblique notches are evenly distributed on the mouth edge of the casing as a flow channel for the melt.
本发明与现有技术相比，具有如下有益效果：在注射加工时，塑料熔液的压力推动柱塞向前运动，第四台阶柱脱离射注通道，塑料熔液可以依次流过射注通道-存液空腔的凹槽-斜向缺口-通液腔-注射口，从而完成注射；待机时，塑料熔液的压力变小，柱塞在弹簧的作用下向后运动，第四台阶柱堵塞射注通道，截住塑料熔液的流动通道，比原来的只是通过注射口冷却凝固的塑料保压的性能要好很多。 Compared with the prior art, the present invention has the following beneficial effects: during injection processing, the pressure of the plastic melt pushes the plunger forward, the fourth step column is separated from the injection channel, and the plastic melt can flow through the injection channel in turn - the groove of the liquid storage cavity - the oblique gap - the liquid cavity - the injection port, so as to complete the injection; when the standby, the pressure of the plastic melt becomes smaller, the plunger moves backward under the action of the spring, and the fourth step column Blocking the injection channel and intercepting the flow channel of the plastic melt is much better than the original pressure-holding performance of the plastic that is only cooled and solidified through the injection port.
附图说明 Description of drawings
图1为本发明实施例的射注时的工作状态图。 Fig. 1 is a working state diagram during injection of an embodiment of the present invention.
图2为本发明实施例的待机时的工作状态图。 Fig. 2 is a working state diagram of the embodiment of the present invention during standby.
图3为本发明实施例的流道柱体的凹槽的截面图。 FIG. 3 is a cross-sectional view of the groove of the flow channel cylinder according to the embodiment of the present invention.
图4为本发明实施例的喷嘴的斜向缺口的截面图。 Fig. 4 is a cross-sectional view of an oblique notch of a nozzle according to an embodiment of the present invention.
具体实施方式 Detailed ways
下面结合附图与具体实施方式对本发明作进一步详细描述：参见图1~4所示，图中标注如下：流道柱体（1）、射注通道（11）、存液空腔（12）、凹槽（13）、喷嘴（2）、喷头部（21）、套管（22）、注射口（23）、通液腔（24）、斜向缺口（25）、加热件（3）、柱塞（4）、第一台阶柱（41）、第二台阶柱（42）、第三台阶柱（43）、第四台阶柱（44）、弹簧（5）。 The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments: Refer to Figures 1 to 4, the figures are marked as follows: flow channel cylinder (1), injection channel (11), liquid storage cavity (12) , groove (13), nozzle (2), nozzle head (21), casing (22), injection port (23), liquid cavity (24), oblique notch (25), heating element (3), Plunger (4), first step post (41), second step post (42), third step post (43), fourth step post (44), spring (5).
一种带保压功能的热流道喷嘴，包括流道柱体1和喷嘴2，流道柱体1的中心设置有射注通道11和存液空腔12，喷嘴2包括喷头部21和套管22，套管22用螺纹联接在存液空腔12的内壁上，喷头部21设置有注射口23，套管22中心设置有通液腔24，流道柱体1上设置有多个加热件3，注射口23、通液腔24、存液空腔12和射注通道11依次相通，存液空腔12上设置有柱塞4，柱塞4依次包括第一台阶柱41、第二台阶柱42、第三台阶柱43和第四台阶柱44，第一台阶柱41可深入通液腔24，第四台阶柱44可深入射注通道11，第二台阶柱42上套设有弹簧5，弹簧5的一端可抵靠在套管22上，另一端可抵靠在第三台阶柱43的柱面上。 A hot runner nozzle with pressure maintaining function, including a flow channel column 1 and a nozzle 2, the center of the flow channel column 1 is provided with an injection channel 11 and a liquid storage cavity 12, and the nozzle 2 includes a nozzle head 21 and a sleeve 22. The casing 22 is threadedly connected to the inner wall of the liquid storage cavity 12, the nozzle head 21 is provided with an injection port 23, the center of the casing 22 is provided with a liquid passage chamber 24, and the flow channel cylinder 1 is provided with a plurality of heating elements 3. The injection port 23, the liquid passage chamber 24, the liquid storage cavity 12 and the injection channel 11 are connected in sequence, and the liquid storage cavity 12 is provided with a plunger 4, and the plunger 4 includes a first stepped column 41 and a second stepped column in sequence. Column 42, third stepped column 43 and fourth stepped column 44, the first stepped column 41 can go deep into the liquid cavity 24, the fourth stepped column 44 can go deep into the injection channel 11, and the second stepped column 42 is covered with a spring 5 , one end of the spring 5 can abut against the bushing 22 , and the other end can abut against the cylindrical surface of the third stepped column 43 .
存液空腔12的内壁上均布设置有7道作为熔液的流动通道的凹槽13。 The inner wall of the liquid storage cavity 12 is uniformly provided with seven grooves 13 as flow channels for the melt.
套管22的口沿上均布设置有6道作为熔液的流动通道的斜向缺口25。 Six oblique notches 25 are evenly distributed on the mouth edge of the sleeve 22 as the flow channels of the melt.
在注射加工时，塑料熔液的压力推动柱塞向前运动，第四台阶柱脱离射注通道，塑料熔液可以依次流过射注通道-存液空腔的凹槽-斜向缺口-通液腔-注射口，从而完成注射；待机时，塑料熔液的压力变小，柱塞在弹簧的作用下向后运动，第四台阶柱堵塞射注通道，截住塑料熔液的流动通道，比原来的通过注射口冷却凝固的塑料保压的性能要好很多。 During injection processing, the pressure of the plastic melt pushes the plunger forward, and the fourth step column is separated from the injection channel, and the plastic melt can flow through the injection channel-the groove of the liquid storage cavity-the oblique gap-through Liquid chamber-injection port, thus completing the injection; when in standby mode, the pressure of the plastic melt decreases, the plunger moves backward under the action of the spring, the fourth step column blocks the injection channel, intercepts the flow channel of the plastic melt, It is much better than the original pressure-holding performance of plastics cooled and solidified through the injection port.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739492.6A CN104526971A (en) | 2014-12-08 | 2014-12-08 | Pressure-maintaining hot runner nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410739492.6A CN104526971A (en) | 2014-12-08 | 2014-12-08 | Pressure-maintaining hot runner nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104526971A true CN104526971A (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410739492.6A Pending CN104526971A (en) | 2014-12-08 | 2014-12-08 | Pressure-maintaining hot runner nozzle |
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| Country | Link |
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| CN (1) | CN104526971A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108855657A (en) * | 2017-05-12 | 2018-11-23 | 诺信公司 | Nozzle and coating system including it |
| CN112123694A (en) * | 2020-09-17 | 2020-12-25 | 方潇潇 | Injection molding machine for high impact polystyrene injection molding with good pressure maintaining performance |
| CN114889058A (en) * | 2022-05-07 | 2022-08-12 | 安徽理工大学 | Injection molding opening of injection mold |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5884741A (en) * | 1981-11-13 | 1983-05-20 | Sharp Corp | Injection molding machine nozzle structure |
-
2014
- 2014-12-08 CN CN201410739492.6A patent/CN104526971A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5884741A (en) * | 1981-11-13 | 1983-05-20 | Sharp Corp | Injection molding machine nozzle structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108855657A (en) * | 2017-05-12 | 2018-11-23 | 诺信公司 | Nozzle and coating system including it |
| CN108855657B (en) * | 2017-05-12 | 2021-08-13 | 诺信公司 | Nozzle and gluing system comprising same |
| US11724266B2 (en) | 2017-05-12 | 2023-08-15 | Nordson Corporation | Nozzle and applicator system comprising the same |
| CN112123694A (en) * | 2020-09-17 | 2020-12-25 | 方潇潇 | Injection molding machine for high impact polystyrene injection molding with good pressure maintaining performance |
| CN114889058A (en) * | 2022-05-07 | 2022-08-12 | 安徽理工大学 | Injection molding opening of injection mold |
| CN114889058B (en) * | 2022-05-07 | 2023-08-04 | 余姚市锐麒电子有限公司 | Injection port of injection mold |
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Application publication date: 20150422 |
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