CN219634402U - Hot nozzle structure with eccentric runner - Google Patents
Hot nozzle structure with eccentric runner Download PDFInfo
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- CN219634402U CN219634402U CN202320194933.3U CN202320194933U CN219634402U CN 219634402 U CN219634402 U CN 219634402U CN 202320194933 U CN202320194933 U CN 202320194933U CN 219634402 U CN219634402 U CN 219634402U
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- hot nozzle
- valve needle
- runner
- nozzle
- hot
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- 230000007704 transition Effects 0.000 claims abstract description 23
- 238000010992 reflux Methods 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims abstract description 10
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 32
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 238000004513 sizing Methods 0.000 abstract description 8
- 238000010008 shearing Methods 0.000 abstract description 3
- 239000003292 glue Substances 0.000 description 12
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000004522 Pentaglottis sempervirens Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229920001871 amorphous plastic Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001055 chewing effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 229920001887 crystalline plastic Polymers 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a hot nozzle structure with an eccentric flow passage, which comprises a valve needle, a nozzle core, a hot nozzle body and a locking piece; the lower end of the valve needle is provided with an annular step and a reflux groove penetrating through the annular step; the lower end of the hot nozzle body is provided with a fixing groove for fixing the nozzle core, and the locking piece is used for locking the nozzle core in the fixing groove; the hot nozzle body is provided with a vertical flow passage and an inclined flow passage communicated with the vertical flow passage; an inlet of the vertical runner is positioned on the upper end surface of the hot nozzle body, an outlet of the inclined runner is positioned on the inner wall of the fixed groove, a transition runner which is in butt joint with the inclined runner is arranged on the side wall of the nozzle core, and an outlet of the transition runner is positioned on the inner wall of the counter bore; the sizing material is introduced into the inner wall of the counter bore through the transition runner to be sprayed out, so that the resistance of the poppet valve to the shearing force generated by sizing material impact is reduced, and the deflection degree of the valve needle is reduced.
Description
Technical Field
The utility model relates to the technical field of injection molding, in particular to a hot nozzle structure with an eccentric runner.
Background
High-end electronic products, medical supplies, cosmetics, daily necessities and the like in the market are prepared by amorphous or crystalline plastic color change molding, and the hot runner suitable for high-temperature fiber engineering plastic materials or corrosive plastic materials is required to carry out product injection molding. In practical applications, injection molding of these products requires a hot runner structure capable of precisely controlling the temperature and a corrosion-resistant hot runner structure to be suitable for mass production.
At present, the existing hot nozzle structure comprises a splitter plate, the hot nozzle is arranged below the splitter plate, the splitter plate 1 is provided with a valve needle sleeve, and the valve needle penetrates through the valve needle sleeve of the splitter plate and is inserted into the hot nozzle. When the valve needle is longer, the rubber inlet of the hot nozzle is positioned at the upper end of the valve needle, such as the structural mode provided by the patent with publication number CN202399465U, when rubber enters the hot nozzle, the rubber can directly impact the upper end of the valve needle, and the lower end of the valve needle is in a suspended state at the moment, so that the impact force of the upper end can lead to the lower end of the valve needle to deviate from the original position, the problem of locking the valve needle is caused, and even the valve needle is seriously broken in a runner of a hot nozzle body.
Disclosure of Invention
The present utility model aims to solve the above problems by providing a heat nozzle structure with an eccentric flow channel, which solves the problems in the prior art.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
there is provided a thermal nozzle structure having an eccentric flow passage, the thermal nozzle structure comprising:
the valve needle is provided with an annular step in a recessed mode on the side wall of the lower end, the annular step penetrates through the end face of the lower end of the valve needle, and the side wall of the lower end of the valve needle is also provided with a reflux groove penetrating through the longitudinal side wall of the annular step;
the valve comprises a nozzle core, wherein a first valve needle channel penetrating through the upper end and the lower end of the nozzle core is arranged on the nozzle core, and a counter bore is arranged on the end face of the lower end of the nozzle core around the first valve needle channel;
the hot nozzle comprises a hot nozzle body, wherein a second valve needle channel penetrating through the upper end and the lower end of the hot nozzle body is arranged on the hot nozzle body, and a fixing groove for fixing the nozzle core is arranged on the end face of the lower end of the hot nozzle body and surrounds the second valve needle channel;
the locking piece is arranged at the lower end of the hot nozzle body and used for locking the nozzle core in the fixing groove;
the hot nozzle comprises a hot nozzle body, a hot nozzle body and a hot nozzle, wherein the hot nozzle body is provided with a vertical flow channel and an inclined flow channel communicated with the lower end of the vertical flow channel; the inlet of the vertical runner is positioned on the upper end face of the hot nozzle body, the outlet of the inclined runner is positioned on the inner wall of the fixed groove, a transition runner which is in butt joint with the outlet of the inclined runner is arranged on the side wall of the nozzle core, the outlet of the transition runner is positioned on the inner wall of the counter bore, and when the hot nozzle is assembled in place, the outlet of the transition runner is opposite to the reflux groove.
The utility model discloses a hot nozzle structure with an eccentric runner, wherein a plurality of reflux grooves are arranged, and the bottom surface of each reflux groove is higher than the vertical surface of an annular step.
The utility model relates to a hot nozzle structure with an eccentric runner, wherein the inclined runner is coaxial with the transition runner and has the same diameter.
The utility model relates to a heat nozzle structure with an eccentric flow passage, wherein the diameter of an outlet of a counter bore is the same as the diameter of a transition flow passage; when assembled in place, the transition flow channel and the outlet of the counter bore are both located on the extension section of the inclined flow channel.
The utility model discloses a hot nozzle structure with an eccentric flow passage, which further comprises a valve needle sleeve, wherein a mounting groove matched with the valve needle sleeve is arranged on the bottom surface of the fixing groove.
The utility model discloses a hot nozzle structure with an eccentric runner, wherein a locking piece is a sealing ring, a first annular boss is arranged at the lower end of a hot nozzle body around a counter bore, the sealing ring is coaxially and spirally connected to the first annular boss, the lower end of a nozzle core extends out of the first annular boss, an avoidance groove is further formed in the sealing ring corresponding to the lower end of the nozzle core, and when the hot nozzle structure is assembled in place, the sealing ring abuts against the nozzle core on the bottom surface of a fixed groove.
The utility model discloses a hot nozzle structure with an eccentric runner, wherein a second annular boss is convexly arranged on the end face of the lower end of a nozzle core, the second annular boss penetrates through a sealing ring, a narrowing part is arranged at the lower end of the second annular boss, a gap is arranged between the narrowing part and the sealing ring, a sealing resin cap is arranged in the gap, a through hole is arranged on the resin cap corresponding to a counter bore, the diameter of the through hole is gradually reduced from top to bottom, and the diameter of the lower end of the through hole is larger than that of a valve needle.
The utility model has the beneficial effects that: after the assembly is completed, the whole valve needle stretches out the nozzle core only by the section of the lower end reflux groove, the suspension length of the valve needle is greatly shortened, during injection molding, glue stock is introduced into the inner wall of the counter bore through the vertical runner, the inclined runner and the transition runner, because the section of the lower end reflux groove of the valve needle is suspended, the force arm is greatly shortened compared with the traditional mode, and then the resistance of the lower end of the valve needle to the shearing force generated by the glue stock impact is improved, the integral deflection degree of the valve needle is reduced, and the occurrence of the condition that the locking or fracture is caused by inaccurate alignment when the valve needle closes a mold due to overlarge deflection amplitude of the lower end of the valve needle is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the present utility model will be further described with reference to the accompanying drawings and embodiments, in which the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained by those skilled in the art without inventive effort:
FIG. 1 is an overall block diagram of a nozzle structure having an eccentric flow path according to the present utility model.
Fig. 2 is an exploded bird's eye view of the structure of the nozzle of the present utility model having an eccentric flow path.
Fig. 3 is an exploded bottom view of the nozzle structure of the present utility model having an eccentric flow path.
Fig. 4 is a cross-sectional view of a nozzle structure having an eccentric flow passage according to the present utility model.
Detailed Description
The terms "first," "second," "third," and "fourth" and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
"plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
Moreover, the terms "upper, lower, left, right, upper end, lower end, longitudinal" and the like that represent the orientation are all referred to with reference to the attitude position of the apparatus or device described in this scheme when in normal use.
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.
As shown in figures 1-4, the heat nozzle structure with the eccentric flow passage in the preferred embodiment of the utility model comprises a valve needle 1, an annular step 2 is concavely formed on the side wall of the lower end of the valve needle 1, the annular step 2 penetrates through the end face of the lower end of the valve needle 1, and a reflux groove 3 penetrating through the longitudinal side wall of the annular step 2 is also arranged on the side wall of the lower end of the valve needle 1;
the hot nozzle structure also comprises a nozzle core 4, wherein a first valve needle channel 5 penetrating through the upper end and the lower end of the nozzle core 4 is arranged on the nozzle core 4 so as to enable the valve needle 1 to move up and down, a counter bore 6 is arranged on the end face of the lower end of the nozzle core 4 around the first valve needle channel 5, and after assembly, when the valve needle 1 is in an open state, the counter bore 6 of the reflux groove 3 is arranged;
the hot nozzle structure further comprises a hot nozzle body 7, wherein a second valve needle channel 8 penetrating through the upper end and the lower end of the hot nozzle body 7 is arranged on the hot nozzle body 7 so as to enable the valve needle 1 to move up and down, a fixing groove 9 for fixing the nozzle core 4 is arranged on the end face of the lower end of the hot nozzle body 7 around the second valve needle channel 8, and further, a heating piece 10 is further arranged on the outer side wall of the hot nozzle body 7 in order to ensure the temperature of sizing materials in a flow channel;
the hot nozzle structure also comprises a locking piece 11 which is arranged at the lower end of the hot nozzle body 7 and is used for locking the nozzle core 4 in the fixed groove 9;
wherein, the hot nozzle body 7 is provided with a vertical flow passage 12 parallel to the valve needle 1 and an inclined flow passage 13 communicated with the lower end of the vertical flow passage 12; the entry of vertical runner is located on the up end of heat mouth body 7, the export of slope runner 13 is located on the inner wall of fixed slot 9, set up the contained angle that slope runner 13 can reduce sizing material blowout direction and second needle passageway 8, avoid the too big transition runner 14 that leads to the gap to advance the glue that leads to of impulsive force, further, be equipped with on the lateral wall of chewing core 4 with the export butt joint of slope runner 13, the export of transition runner 14 is located on the inner wall of counter bore 6, during the assembly in place, the export of transition runner 14 is just to the reflux groove 3, after the assembly is accomplished, whole needle 1 stretches out the mouth core 4 in its lower extreme reflux groove 3 place section, can shorten the unsettled length of needle 1 greatly, during the injection molding, through vertical runner 12, slope runner 13 and transition runner 14 with sizing material introduction counter bore 6's inner wall blowout, because needle 1 is unsettled only in its lower extreme section, the arm is shortened greatly compared with traditional mode, and then the lower extreme to the shearing force's that sizing material impact produced of needle 1's resistance ability has been reduced, the whole deflection degree of needle 1, the needle 1 has avoided the lower extreme to lead to the too big sizing material to closing when die 1 to the time of die is bad, the condition that the needle 1 is shut down, the needle 1 can take place the accurate condition of sealing performance is better than the sealing sleeve length because of sealing sleeve 1 takes place, moreover, the sealing effect is further than can prevent to seal the length to be compared with the sealing sleeve to the needle.
The working principle of the heat nozzle structure is as follows: the whole nozzle core 4 is structurally fixed on the die, the valve needle 1 is driven to move up and down through an additionally arranged cylinder, the valve needle 1 ascends, a glue injection port on the die is opened, the valve needle 1 descends, and the glue injection port on the die is closed through the annular step 2.
Preferably, the reflux groove 3 is provided with a plurality of reflux grooves, the bottom surface of the reflux groove 3 is higher than the vertical surface of the annular step 2, so that the section where the annular step 2 is located stretches into the glue injection port of the die and seals the glue injection port, the upper end of the glue injection port on the die can be subjected to interference plugging after the valve needle 1 is in place, after the annular step 2 stretches into the die, redundant glue materials compressed by the valve needle 1 and extruded out of the die can flow back into the runner from the reflux groove 3, the glue material pressure at the joint of the hot nozzle structure and the die is balanced, and leakage is avoided.
Preferably, the inclined runner 13 and the transition runner 14 are coaxial and have the same diameter so as to ensure that the inner wall of the runner of the nozzle core 4 structure is smooth, so that the alternating current injection is smooth, and meanwhile, the local accumulation and coking of the sizing material are avoided, and the quality of injection parts is further influenced.
Preferably, the outlet diameter of the counter bore 6 is the same as the diameter of the transition flow channel 14; when the device is assembled in place, the outlets of the transition flow channel 14 and the counter bore 6 are positioned on the extension section of the inclined flow channel 13, namely, the three are positioned on the same straight line, the design can facilitate the processing of the inclined flow channel 13 through turning, and meanwhile, the glue stock sprayed out of the inclined flow channel 13 can be ensured to be opposite to the outlet of the counter bore 6.
Preferably, the heat nozzle structure further comprises a valve needle sleeve 15, and a mounting groove 16 matched with the valve needle sleeve 15 is arranged on the bottom surface of the fixing groove 9 so as to further seal the first valve needle channel 5.
Preferably, the locking piece 11 is a sealing ring, the lower end of the hot nozzle body 7 is provided with a first annular boss 17 around the counter bore 6, the sealing ring is coaxially and in threaded connection with the first annular boss 17, the lower end of the nozzle core 4 extends out of the first annular boss 17, the sealing ring is also provided with a avoiding groove 18 corresponding to the lower end of the nozzle core 4, when the hot nozzle is assembled in place, the sealing ring is abutted against the nozzle core 4 on the bottom surface of the fixed groove 9, wherein the lower end face of the nozzle core 4 is convexly provided with a second annular boss 19, the second annular boss 19 penetrates through the sealing ring, the lower end of the second annular boss 19 is provided with a narrowing part 191, a gap is arranged between the narrowing part 191 and the sealing ring, a sealing resin cap 20 is arranged in the gap so as to prevent glue from entering between the sealing ring and the nozzle core 4, the sealing resin cap 20 is provided with a through hole 21 corresponding to the counter bore 6, the diameter of the through hole 21 is gradually reduced from top to bottom, the diameter of the through hole 21 is larger than the diameter of the valve needle 1, the through hole 21 is in a straight cylinder shape, the through hole 21 is designed into a conical structure so that the strength of the sealing resin cap 20 can be improved, and the integrity of the sealing resin cap after the sealing cap is broken due to the heat sealing resin is prevented from being broken.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (7)
1. A structure is chewed to heat with eccentric runner, characterized in that, this structure is chewed to heat includes:
the valve needle is provided with an annular step in a recessed mode on the side wall of the lower end, the annular step penetrates through the end face of the lower end of the valve needle, and the side wall of the lower end of the valve needle is also provided with a reflux groove penetrating through the longitudinal side wall of the annular step;
the valve comprises a nozzle core, wherein a first valve needle channel penetrating through the upper end and the lower end of the nozzle core is arranged on the nozzle core, and a counter bore is arranged on the end face of the lower end of the nozzle core around the first valve needle channel;
the hot nozzle comprises a hot nozzle body, wherein a second valve needle channel penetrating through the upper end and the lower end of the hot nozzle body is arranged on the hot nozzle body, and a fixing groove for fixing the nozzle core is arranged on the end face of the lower end of the hot nozzle body and surrounds the second valve needle channel;
the locking piece is arranged at the lower end of the hot nozzle body and used for locking the nozzle core in the fixing groove;
the hot nozzle comprises a hot nozzle body, a hot nozzle body and a hot nozzle, wherein the hot nozzle body is provided with a vertical flow channel and an inclined flow channel communicated with the lower end of the vertical flow channel; the inlet of the vertical runner is positioned on the upper end face of the hot nozzle body, the outlet of the inclined runner is positioned on the inner wall of the fixed groove, a transition runner which is in butt joint with the outlet of the inclined runner is arranged on the side wall of the nozzle core, the outlet of the transition runner is positioned on the inner wall of the counter bore, and when the hot nozzle is assembled in place, the outlet of the transition runner is opposite to the reflux groove.
2. The heat nozzle structure with eccentric flow passage as claimed in claim 1, wherein a plurality of the reflux grooves are provided, and the bottom surface of the reflux groove is higher than the vertical surface of the annular step.
3. The thermal nozzle structure having an eccentric flow passage according to claim 1, wherein said inclined flow passage is coaxial with said transition flow passage and has the same diameter.
4. A thermal nozzle structure having an eccentric flow passage according to claim 1 or 3, wherein the outlet diameter of the counterbore is the same as the diameter of the transition flow passage; when assembled in place, the transition flow channel and the outlet of the counter bore are both located on the extension section of the inclined flow channel.
5. The structure of the hot nozzle with the eccentric runner according to claim 1, further comprising a valve needle sleeve, wherein a mounting groove matched with the valve needle sleeve is arranged on the bottom surface of the fixing groove.
6. The hot nozzle structure with the eccentric runner according to claim 1, wherein the locking piece is a sealing ring, a first annular boss is arranged at the lower end of the hot nozzle body around the counter bore, the sealing ring is coaxially and in threaded connection with the first annular boss, the lower end of the nozzle core extends out of the first annular boss, an avoidance groove is further formed in the sealing ring corresponding to the lower end of the nozzle core, and the sealing ring abuts against the nozzle core on the bottom surface of the fixing groove when the hot nozzle is assembled in place.
7. The heat nozzle structure with the eccentric runner according to claim 6, wherein a second annular boss is convexly arranged on the end face of the lower end of the nozzle core, the second annular boss penetrates through the sealing ring, a narrowing part is arranged at the lower end of the second annular boss, a gap is arranged between the narrowing part and the sealing ring, a sealing resin cap is arranged in the gap, a through hole is arranged on the resin cap corresponding to the counter bore, the diameter of the through hole gradually decreases from top to bottom, and the diameter of the lower end of the through hole is larger than that of the valve needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320194933.3U CN219634402U (en) | 2023-01-16 | 2023-01-16 | Hot nozzle structure with eccentric runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320194933.3U CN219634402U (en) | 2023-01-16 | 2023-01-16 | Hot nozzle structure with eccentric runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219634402U true CN219634402U (en) | 2023-09-05 |
Family
ID=87822288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320194933.3U Active CN219634402U (en) | 2023-01-16 | 2023-01-16 | Hot nozzle structure with eccentric runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219634402U (en) |
-
2023
- 2023-01-16 CN CN202320194933.3U patent/CN219634402U/en active Active
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