CN117283815A - A multi-head needle valve hot runner side glue inlet structure and its working method - Google Patents
A multi-head needle valve hot runner side glue inlet structure and its working method Download PDFInfo
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- CN117283815A CN117283815A CN202311395598.4A CN202311395598A CN117283815A CN 117283815 A CN117283815 A CN 117283815A CN 202311395598 A CN202311395598 A CN 202311395598A CN 117283815 A CN117283815 A CN 117283815A
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- shunt
- main
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- valve needle
- needle
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- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
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- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2737—Heating or cooling means therefor
-
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a hot nozzle needle hot runner side glue feeding structure and a working method thereof, the hot nozzle needle hot runner side glue feeding structure comprises a hot nozzle body, the hot nozzle body comprises a main nozzle, a main runner is arranged, the upper end of the main runner is communicated with a driving mechanism, a main valve needle fixedly connected with the driving mechanism is arranged in the main runner, the main valve needle is driven to move up and down in the main runner through the driving mechanism, a flow dividing module is communicated below the main nozzle, a plurality of mutually independent flow dividing channels are arranged in the flow dividing module, each flow dividing channel is respectively provided with a flow dividing channel valve needle for controlling the opening/closing of the flow dividing channel, and glue is discharged from the side face of the flow dividing module.
Description
Technical Field
The invention relates to the technical field of hot runners, in particular to a side glue feeding structure of a hot runner of a multi-head needle valve and a working method of the side glue feeding structure.
Background
The published patent application No. cn201711327013.X is referred to as reference 1, and it is pointed out in reference 1 that a one-nozzle multi-head needle valve hot runner system is a heating component system used in an injection mold to inject melted plastic particles into a cavity of the mold. The hot runner mold is a brand new structure in which runners and runners of a conventional mold or a three-plate mold are heated, and the runners and runners do not need to be taken out during each molding. The hot runner mold is mainly used for producing plastic products, and is a mold which utilizes a heating device to ensure that melt in a runner is not solidified all the time, compared with the traditional mold, the hot runner mold has a short forming period and saves more raw materials, so that the hot runner mold is widely applied in countries and regions with developed industries in the world today. With the rapid development of communication and IT, plastic products in many precision electronics have small size and high precision requirements. In order to reduce the cost and improve the production efficiency, a multi-cavity mold is generally used for small-sized products, and in a common hot runner mold, a multi-cavity mold is generally realized by adopting a splitter plate and a plurality of hot nozzles (or called hot nozzles), and because the interference distance between the hot nozzles needs to be considered, the mold is generally large in volume, multiple in consumable materials and high in processing cost, and the phenomena of uneven glue and unbalanced heat are easily caused.
The published patent with the application number of CN201320219367.3 is a comparison document 2, the hot nozzle of a hot runner single-point multi-head needle valve in the comparison document 2 is pointed out, only one valve needle is arranged in the hot nozzle body in the prior art, the valve needle is driven by a cylinder to do up-and-down motion, when the valve needle rises, a discharge hole is opened, when the valve needle descends, the discharge hole is closed, the prior art can only correspond to one product for injection molding, when the products are injected in batches, a large number of hot nozzles are needed, the production cost is increased, the working efficiency is also reduced in the injection molding process, and the practical value is smaller.
In summary, in the prior art, in the injection molding production process of one mold with multiple cavities, the phenomena of higher cost, uneven glue discharge and unbalanced heat exist.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a technical scheme capable of solving the problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a bull needle valve hot runner side advances gluey structure, includes the hot body of chewing, and the hot body of chewing includes:
the main nozzle is provided with a main runner, the upper end of the main runner is communicated with a driving mechanism, a main valve needle fixedly connected with the driving mechanism is arranged in the main runner, and the main valve needle is driven to move up and down in the main runner through the driving mechanism;
the split flow module is communicated and arranged below the main nozzle, a plurality of mutually independent split flow channels are arranged in the split flow module, split flow channel valve needles for controlling the split flow channels to open/close are respectively arranged in each split flow channel, and the split flow channels are used for discharging glue on the side surfaces of the split flow module;
the flow dividing module is internally provided with a flow dividing working cavity, a flow dividing system is arranged in the flow dividing working cavity, the flow dividing system comprises a linkage block fixedly connected with the lower end of the main valve needle, the rear end of the flow dividing channel valve needle is in oblique sliding fit with the linkage block, and the transverse movement of the flow dividing channel valve needle is driven by the lifting of the linkage block;
the main nozzle is sleeved with a hot nozzle heater, and the split module is provided with a heating pipe.
As a further scheme of the invention: the guide sliding groove is arranged in the shunt working cavity, the rear end of the valve needle of the shunt channel is connected with a sliding block connecting piece, the sliding block connecting piece is in sliding fit in the guide sliding groove, a plurality of first sliding inclined planes are formed in the sliding block connecting piece, an oblique sliding groove is formed in the first sliding inclined planes, a plurality of second sliding inclined planes which are respectively in sliding fit with the first sliding inclined planes are arranged at the lower end of the linkage block, and an oblique sliding block which is in sliding fit in the oblique sliding groove is fixedly arranged on the second sliding inclined planes.
As a further scheme of the invention: the inner bottom surface of the main runner is provided with a plurality of oblique flow dividing grooves which are respectively matched with the flow dividing grooves in an alignment way, the flow dividing runner comprises an oblique runner which is matched with the flow dividing grooves in an alignment way and a transverse runner which is communicated with the oblique runner, and a transition runner is communicated between the oblique runner and the transverse runner.
As a further scheme of the invention: the split module comprises an upper module at the upper end and a lower module fixedly arranged at the lower end of the upper module, the upper module and the lower module are spliced to form a split working cavity and a guide chute, a sprue bush matched with the injection molding cavity is arranged at the opening end of the guide chute, a runner insert communicated with an inclined runner is arranged at the rear of the sprue bush, a partition plate is formed in the guide chute, a guide hole for guiding a split runner valve needle is formed in the partition plate, and the split runner valve needle penetrates through the guide hole to be matched with the sprue bush in an alignment manner.
As a further scheme of the invention: an open clamping chute is formed in one surface of the sliding block connecting piece opposite to the first sliding inclined surface, and a clamping positioning block which is matched with the clamping chute in a clamping manner is fixedly arranged at the rear end of the valve needle of the diversion channel.
As a further scheme of the invention: the upper end shaping of reposition of redundant personnel module has the adapter tube, and the lower extreme that the main mouth of penetrating inserts the cooperation in the carrier tube, has seted up spacing mounting groove on the outer wall of main mouth of penetrating, is equipped with shell fragment joint spare in the spacing mounting groove, and the outer wall cover of adapter tube is equipped with and is used for main mouth and the carrier tube between fixed connection fixed pipe.
As a further scheme of the invention: the first connecting hole has been seted up to the interior bottom surface of sprue, the second connecting hole with first connecting hole intercommunication has been seted up to the interior bottom surface of adapter tube, the seal groove has been installed to the opening part of second connecting hole, be equipped with the seal tube in the seal groove, the lower port of seal tube extends into the second connecting hole internal fit, the upper port of seal tube extends into the first connecting hole internal fit, the annular boss of joint fixed in the seal groove has been set firmly to the periphery of seal tube, the main needle stretches into the reposition of redundant personnel working chamber from the seal tube.
As a further scheme of the invention: the first sliding inclined planes are connected with each other, the sliding block connecting pieces are mutually spliced and matched, the joint of the adjacent sliding block connecting pieces is provided with an oblique joint surface, and the number N1 of the sliding block connecting pieces and the oblique angle alpha 1 of the oblique joint surface have the following connection relation: α1= (180 ° × (n-2))/2 n.
As a further scheme of the invention: the upper end shaping that the main mouth that penetrates has positioning flange, has seted up positioning groove on positioning flange's the outer wall, and positioning flange and main junction of penetrating the mouth are equipped with the extending groove that upwards extends, and the heater extends to the extending groove setting, and the heating pipe is evenly wound the cladding on the reposition of redundant personnel module.
The working method of the multi-head needle valve hot runner side glue feeding structure comprises a hot nozzle body, wherein the hot nozzle body comprises:
the main nozzle is provided with a main runner, the upper end of the main runner is communicated with a driving mechanism, a main valve needle fixedly connected with the driving mechanism is arranged in the main runner, and the main valve needle is driven to move up and down in the main runner through the driving mechanism;
the split flow module is communicated and arranged below the main nozzle, a plurality of mutually independent split flow channels are arranged in the split flow module, split flow channel valve needles for controlling the split flow channels to open/close are respectively arranged in each split flow channel, and the split flow channels are used for discharging glue on the side surfaces of the split flow module;
the flow dividing module is internally provided with a flow dividing working cavity, a flow dividing system is arranged in the flow dividing working cavity, the flow dividing system comprises a linkage block fixedly connected with the lower end of the main valve needle, the rear end of the flow dividing channel valve needle is in oblique sliding fit with the linkage block, and the transverse movement of the flow dividing channel valve needle is driven by the lifting of the linkage block;
a hot nozzle heater is sleeved on the main nozzle, and a heating pipe is arranged on the split module;
the working steps comprise:
s: the driving mechanism drives the main valve needle to ascend to enable the linkage block to ascend and drive the valve needles of the multiple sub-runners to move back to enable the gates of the sub-runners to be opened, and the side surfaces of the sub-runners are used for glue discharging;
s: after one injection molding is completed, the driving mechanism drives the main valve needle to descend, so that the linkage block descends, and the valve needles of the multiple flow distribution channels are driven to move centripetally, so that the gates of the flow distribution channels are closed, and the glue outlet of the flow distribution channels is stopped.
Compared with the prior art, the invention has the following beneficial effects:
when the injection molding machine works normally, after the injection molding raw material melt adhesive enters the hot nozzle body, the injection molding raw material melt adhesive enters an injection molding die cavity to prepare a product through a main runner and a plurality of branch runners, after one injection molding is finished, a driving mechanism moves in the vertical direction to drive a branch runner valve needle to move, the branch runner valve needle blocks a sprue of the branch runner to seal the adhesive, the diameter of the branch runner is smaller, a plurality of branch runners can be arranged at the same time in the same branch module, so that injection molding processing of various small-space arranged plastic products is realized, meanwhile, the driving mechanism drives the branch runner valve needle to realize injection molding/adhesive sealing conversion, and adhesive discharging is uniform; waste of the melt adhesive is prevented, so that the production cost is reduced;
the split flow channel adopts a transverse glue outlet mode, so that the split flow module can rotate along the axis of the main nozzle according to the requirement to quickly adjust the direction of the glue outlet, thereby being suitable for different die cavity assembly, saving time and labor, simultaneously adopting a side glue outlet injection mode to enable the glue outlet to be more concealed, effectively improving the overall performance of the die and the hot runner, reducing glue marks on the surface of a product, reducing production waste, improving the quality of the product, reducing the production cost, being more suitable for injection molding processing of some precise small parts, and being capable of better controlling the product quality in each die cavity in the injection molding process of multiple die cavities.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a side view of the present invention (without the drive mechanism and main valve pin);
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is a partial view at B in FIG. 3;
fig. 5 is a structural perspective view of the link block 540 and the slider link 550 in the present invention;
FIG. 6 is a diagram of an operational state of the linkage block 540 and the slider link 550 of the present invention;
FIG. 7 is a diagram showing another operation state of the linkage block 540 and the slider link 550 according to the present invention;
FIG. 8 is a perspective view of the slider connector 550 and the bypass valve needle 511 of the present invention;
FIG. 9 is a bottom view of the slider link 550 and the linkage block 540 of the present invention;
reference numerals and names in the drawings are as follows:
the hot nozzle body-100, the main nozzle-200, the main runner-210, the driving mechanism-300, the main valve needle-220, the split module-500, the split runner-510, the split runner valve needle-511, the split working cavity-520, the split system-530, the linkage block-540, the hot nozzle heater-600, the heating pipe-700, the guide chute-521, the slide block connector-550, the first sliding inclined surface-551, the inclined sliding groove-552, the second sliding inclined surface-541, the inclined sliding block-542, the inclined split groove-230, the inclined runner-513, the transverse runner-514, the transition runner-515, the upper module-501, the lower module-502, the sprue bush-522, the runner insert-523, the partition plate-524, the guide hole-525, the clamping chute-553, the clamping positioning block-554, the bearing pipe-570, the limit mounting groove-230, the spring plate clamping piece-240, the connecting fixing pipe-250, the first connecting hole-211, the second connecting hole-571, the sealing groove-572, the sealing pipe-573, the annular boss-556, the fitting surface-280, the positioning flange-282 and the extending groove-282.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, a side glue feeding structure of a hot runner of a multi-head needle valve includes a hot nozzle body 100, wherein the hot nozzle body 100 includes:
the main nozzle 200 is provided with a main runner 210, the upper end of the main runner 210 is communicated with a driving mechanism 300, a main valve needle 220 fixedly connected with the driving mechanism 300 is arranged in the main runner 210, and the main valve needle 220 is driven to move up and down in the main runner 210 through the driving mechanism 300;
the split-flow module 500 is communicated and arranged below the main nozzle 200, a plurality of mutually independent split-flow channels 510 are arranged in the split-flow module 500, split-flow channel valve needles 511 for controlling the split-flow channels 510 to open/close are respectively arranged in each split-flow channel 510, and the split-flow channels 510 are used for discharging glue on the side surfaces of the split-flow module 500;
the split-flow working cavity 520 is also formed in the split-flow module 500, the split-flow working cavity 520 is internally provided with the split-flow system 530, the split-flow system 530 comprises a linkage block 540 fixedly connected with the lower end of the main valve needle 220, the rear end of the split-flow channel valve needle 511 is in oblique sliding fit with the linkage block 540, and the transverse movement of the split-flow channel valve needle 511 is driven by the lifting of the linkage block 540;
the main nozzle 200 is sleeved with a hot nozzle heater 600, and a heating pipe 700 is arranged on the split module 500;
as shown in fig. 1 and 4, in the injection molding process, molten raw materials enter each sub-runner 510 from the main runner 210 of the main nozzle 200, then flow out from each sub-runner 510 into an injection molding cavity, the main nozzle 200 is heated by the hot nozzle heater 600 and the sub-runner module 500 is heated by the heating pipe 700 at the same time, so that the molten raw materials in the hot nozzle body 100 can be controlled within a certain temperature range, solidification of the injection molding raw materials in the hot nozzle body 100 is avoided, during installation, the sub-runner valve needle 511 and the linkage block 540 are assembled, the driving mechanism 300 drives the main valve needle 220 to move up and down in the main runner 210, the main valve needle 220 drives the linkage block 540 to move up and down, the rear end of the sub-runner valve needle 511 is in oblique sliding fit with the linkage block 540, and the transverse movement of the sub-runner valve needle 511 is driven by lifting of the linkage block 540;
during normal injection molding, after the injection molding raw material melt adhesive enters the hot nozzle body 100, the melt adhesive enters an injection molding cavity to be manufactured into a product through the main runner 210 and the plurality of branch runners 510, after one injection molding is finished, the driving mechanism 300 moves in the vertical direction to drive the branch runner valve needle 511 to move, the branch runner valve needle 511 blocks the gate of the branch runner 510 to seal the adhesive, the diameter of the branch runner 510 is smaller, a plurality of branch runners 510 can be arranged at the same time in the same branch module 500, so that injection molding processing of various small-space arranged plastic products is realized, meanwhile, the driving mechanism 300 drives the branch runner valve needle 511 to realize injection molding/adhesive sealing conversion, and the adhesive discharging is uniform; waste of the melt adhesive is prevented, so that the production cost is reduced;
the split runner 510 adopts a transverse glue outlet mode, so that the split runner module 500 can rotate along the axis of the main nozzle 200 according to the requirement to quickly adjust the glue outlet direction, thereby being suitable for different die cavity assembly, saving time and labor, simultaneously adopting a side glue outlet injection mode to enable the glue outlet to be more concealed, effectively improving the overall performance of a die and a hot runner, reducing glue marks on the surface of a product, reducing production waste, improving the quality of the product and reducing the production cost, and being more suitable for the injection molding processing of some precise small parts (described in the 0014 section of the published patent specification with the application number of CN 201720493982.1), and better controlling the product quality in each die cavity in the multi-die cavity injection molding process.
In the embodiment of the invention, a guide chute 521 which is transversely arranged is arranged in a diversion working cavity 520, the rear end of a diversion valve needle 511 is connected with a slide block connecting piece 550, the slide block connecting piece 550 is in sliding fit in the guide chute 521, a plurality of first sliding inclined planes 551 are arranged on the slide block connecting piece 550, an inclined sliding groove 552 is arranged on the first sliding inclined planes 551, a plurality of second sliding inclined planes 541 which are respectively in sliding fit with the first sliding inclined planes 551 are arranged at the lower end of a linkage block 540, and an inclined slide block 542 which is in sliding fit in the inclined sliding groove 552 is fixedly arranged on the second sliding inclined planes 541;
as shown in fig. 4, fig. 5 and fig. 6, in the use process, the oblique sliding block 542 is in sliding fit in the oblique sliding groove 552, when injection molding operation is performed, the driving mechanism 300 drives the main valve needle 220 to lift, after the main valve needle 220 is lifted, the driving block 540 is driven to lift, in the lifting process, the driving block 540 generates an acting force F1, under the matching action of the F1 and the guide chute 521, the oblique sliding block 542 is in sliding fit in the oblique sliding groove 552, the driving block 540 generates a centripetal acting force F2 on the sliding block connecting piece 550, so that the sliding block connecting piece 550 centripetally slides, the sliding connecting piece centripetally slides to drive the manifold valve needle 511 to centripetally move, and after the manifold valve needle 511 centripetally moves, the gate of the manifold 510 is opened, so that injection molding raw materials in the main runner 210 can enter an injection molding cavity through the manifold 510, and injection molding operation is performed;
as shown in fig. 7, after the previous injection molding operation is completed, the driving mechanism 300 drives the main valve needle 220 to descend, and after the main valve needle 220 descends, the driving block 540 is driven to descend, the driving block 540 generates an acting force F3 in the descending process, under the matching action of the F3 and the guide chute 521, the inclined sliding block 542 slides in the inclined sliding groove 552 to match, the driving block 540 generates an outward acting force F4 on the sliding block connecting piece 550, so that the sliding block connecting piece 550 slides outwards, the sliding connecting piece slides outwards to drive the split runner valve needle 511 to move outwards, and the gate of the split runner 510 is sealed after the split runner valve needle 511 moves outwards, so that the split runner 510 is sealed, glue can be flexibly controlled by the driving mechanism 300, the reaction is rapid, the control effect is stable, the glue outlet effect is better controllable, glue outlet is uniform, and meanwhile, the waste of the molten glue is prevented, and therefore, the production cost is also reduced.
In the embodiment of the present invention, the inner bottom surface of the main flow channel 210 is provided with a plurality of oblique flow dividing grooves 230 respectively aligned with the flow dividing channels 510, the flow dividing channels 510 include an oblique flow channel 513 aligned with the flow dividing grooves and a transverse flow channel 514 communicated with the oblique flow channel 513, and a transition flow channel 515 is communicated between the oblique flow channel 513 and the transverse flow channel 514;
as shown in fig. 4, during normal injection molding operation, after the injection molding raw material melt adhesive enters the main runner 210, the injection molding raw material melt adhesive passes through the main runner 210 and the plurality of flow distribution channels 510 and finally enters the injection molding cavity to be manufactured into a product, during the process of flowing from the main runner 210 to the flow distribution channels 510, the injection molding raw material firstly flows into the inclined runner 513 through the inclined flow distribution channel 230, then flows into the transverse runner 514 through the transition runner 515, finally enters the injection molding cavity through the transverse runner 514, and the inclined runner 513 is arranged, so that the pressure and tangential stress in the runner during the process of conveying the injection molding raw material are reduced, the conveying of the raw material is smoother, the pressure and tangential stress in the runner during the process of conveying the injection molding raw material are reduced, and particularly during the process of simultaneously injecting the injection molding with a plurality of cavities, the whole injection molding product in the injection molding cavity is smoother due to the fact that the volume of the die cavity is smaller and the pressure is more sensitive;
meanwhile, the lateral runner 514 is arranged, so that the side glue outlet mode can be adopted, the glue outlet is more hidden by the side glue outlet injection mode, the overall performance of the die and the hot runner can be effectively improved by the side glue outlet mode, glue marks on the surface of a product are reduced, waste materials produced are reduced, and the quality of the product is improved.
In the embodiment of the invention, the split module 500 comprises an upper module 501 at the upper end and a lower module 502 fixedly arranged at the lower end of the upper module 501, the upper module 501 and the lower module 502 are spliced to form a split working cavity 520 and a guide chute 521, a sprue bush 522 matched with an injection molding cavity is arranged at the opening end of the guide chute 521, a runner insert 523 communicated with an inclined runner 513 is arranged at the rear of the sprue bush 522, a partition plate 524 is formed in the guide chute 521, a guide hole 525 for guiding the split runner valve needle 511 is formed in the partition plate 524, and the split runner valve needle 511 passes through the guide hole 525 and stretches into the sprue bush 522 to be matched in an aligned manner;
as shown in fig. 4, in the assembly process of the present invention, the linkage block 540 and the sliding connection member are assembled and then are installed in the split-flow working chamber 520, then the split-flow valve needle 511 is installed on the sliding connection member after passing through the guide hole 525, the sprue bush 522 is sleeved on the split-flow valve needle 511 and installed in the guide chute 521 (the guide chute 521 is a part of the guide chute 521 arranged at the lower end of the upper template), the runner insert 523 is also installed in the guide chute 521 (the guide chute 521 is a part of the guide chute 521 arranged at the lower end of the upper template), and finally the lower module 502 is locked on the upper module 501 by bolts, so that the assembly of the parts in the split-flow working chamber 520 of the present invention is completed;
as shown in fig. 4, the guide chute 521 includes an upper portion and a lower portion disposed on the upper module 501 and the lower module 502, respectively, and the upper portion and the lower portion are combined to form a complete guide chute 521;
the upper module 501 and the lower module 502 are matched, so that the disassembly, assembly and maintenance of the invention are more convenient and quicker, and the use cost is lower;
the sprue bush 522 is matched with the injection molding cavity in an injection molding way, the glue outlet is opened/closed through the matching of the split runner valve needle 511 and the sprue bush 522, the connection between the sprue bush 522 and the inclined runner 513 is more stable through the runner insert 523, and the runner insert 523 and the sprue bush 522 are matched to form the transverse runner 514.
In the embodiment of the invention, an open clamping chute 553 is formed on one surface of the slider connecting piece 550 opposite to the first sliding inclined surface 551, and a clamping positioning block 554 which is matched in the clamping chute 553 in a clamping way is fixedly arranged at the rear end of the shunt valve needle 511;
as shown in fig. 8, in the assembling process of the split-flow channel valve needle 511, the clamping positioning block 554 is inserted from the opening of the clamping chute 553, so that the mutual fixing and matching of the clamping positioning block 554 and the sliding block connector 550 are realized, when the split-flow channel valve needle 511 needs to be replaced, the clamping positioning block 554 only needs to slide out of the clamping chute 553, and then a new split-flow channel valve needle 511 is installed into the clamping chute 553, thereby facilitating the quick replacement and maintenance of the split-flow channel valve needle 511, leading the integral structure of the split-flow channel valve needle 511 to be simpler and more universal, having wider application range and low maintenance cost.
In the embodiment of the invention, the upper end of the split flow module 500 is formed with a receiving pipe 570, the lower end of the main nozzle 200 is inserted and matched in the bearing pipe, the outer wall of the main nozzle 200 is provided with a limit mounting groove 230, the limit mounting groove 230 is internally provided with a spring plate clamping piece 240, and the outer wall of the receiving pipe 570 is sleeved with a connecting and fixing pipe 250 for fixing the main nozzle 200 and the bearing pipe;
as shown in fig. 4, in the assembly process, the heater 600 and the connection fixing tube 250 are first sleeved on the main nozzle 200, then the main nozzle 200 is inserted into the receiving tube 570 to be matched with the main nozzle, then the elastic piece clamping piece 240 is installed in the limit installation groove 230, finally the connection fixing tube 250 is pushed downwards, so that the connection fixing tube 250 and the elastic piece clamping piece 240 are clamped and limited, and meanwhile, the connection fixing tube 250 and the receiving tube 570 are clamped and fixed, so that the connection and the fixation between the main nozzle 200 and the split module 500 are completed quickly and conveniently, the whole maintenance is convenient, the usability is good, and the maintenance cost is low.
In the embodiment of the invention, a first connecting hole 211 is formed in the inner bottom surface of the main runner 210, a second connecting hole 571 communicated with the first connecting hole 211 is formed in the inner bottom surface of the joint pipe 570, a sealing groove 572 is arranged at the opening of the second connecting hole 571, a sealing pipe 573 is arranged in the sealing groove 572, the lower port of the sealing pipe 573 extends into the second connecting hole 571 to be matched with the second connecting hole 571, the upper port of the sealing pipe 573 extends into the first connecting hole 211 to be matched with the first connecting hole 211, an annular boss 574 which is clamped and fixed in the sealing groove 572 is fixedly arranged on the periphery of the sealing pipe 573, and the main valve needle 220 extends into the split-flow working cavity 520 from the sealing pipe 573;
as shown in fig. 4, in the assembling process, firstly, the sealing tube 573 is installed in the sealing groove 572, after the main nozzle 200 and the split module 500 are connected and fixed, the boss of the sealing tube 573 is stably installed in the sealing groove 572, so that the installation of the sealing tube 573 is more stable, the flow direction of the injection molding raw material changes in the process of flowing from the main runner 210 to the split runner 510, so that the pressure on the inner bottom surface of the main runner 210 is larger, and in order to avoid the overflow of the injection molding raw material in the main runner 210 into the split working cavity 520, the sealing tube 573 is additionally arranged between the first connecting hole 211 and the second connecting hole 571, so that the sealing performance of the main valve needle 220 in the up-down movement process is better;
in one embodiment, the seal tube 573 comprises a copper seal tube 573 because copper has good ductility and sealing properties.
In the embodiment of the present invention, the plurality of first sliding inclined surfaces 551 are connected to each other, the plurality of sliding block connectors 550 are spliced and matched with each other, the adjacent joint positions of the sliding block connectors 550 are provided with the inclined joint surfaces 556, and the following connection relationship exists between the number N1 of the sliding block connectors 550 and the inclination angle α1 of the inclined joint surfaces 556: α1= (180 ° × (n-2))/2 n;
as shown in fig. 9, the plurality of slider connectors 550 are mutually matched and connected, so that the overall structure of the invention is more compact and reasonable, the overall structure of the invention is finer, the application range is wider, and the practicability is better, wherein the number N1 of the slider connectors 550 and the inclination angle α1 of the inclined joint surface 556 have the following connection relationship: α1= (180 ° × (n-2))/2 n, as shown in fig. 9, four slider links 550 in which n=4, α1=45 degrees, α1=54 degrees when the number of the slider links is 5, and so on;
the sliding connection blocks just enclose to form a regular polygon, the sliding connection blocks can be equivalently used as edges of the regular polygon, the degree of each inner angle of the regular polygon is alpha n, and the following corresponding relation exists between the number of the edges Nn: αn= (180 ° × (Nn-2))/Nn, and the adjacent slide connection blocks divide one inner angle of the regular polygon in half, so α1= (180 ° × (n-2))/2 n.
In the embodiment of the invention, the upper end of the main nozzle 200 is formed with a positioning flange 280, the outer wall of the positioning flange 280 is provided with a positioning groove 281, the joint of the positioning flange 280 and the main nozzle 200 is provided with an extending groove 282 extending upwards, the heater 600 of the hot nozzle extends into the extending groove 282, and the heating pipe 700 is uniformly wound and coated on the diversion module 500;
the positioning groove 281 is matched with the injection mold in a positioning way, so that the installation of the side glue feeding structure of the multi-head needle valve hot runner is more stable, the structure of the hot nozzle heater 600 and the main nozzle 200 is more compact by extending the hot nozzle heater 600 into the extending groove 282, the overall performance of the mold and the hot runner is effectively improved, the coating of the hot nozzle heater 600 on the main nozzle 200 is more comprehensive, and the heating effect of the hot nozzle heater 600 on the main nozzle 200 is better;
meanwhile, the heating pipe 700 is uniformly wound and coated on the outer wall of the split module 500, so that the heating pipe 700 can heat the split module 500 more comprehensively;
through the cooperation of the hot nozzle heater 600 and the heating pipe 700, the multi-head needle valve hot runner side glue feeding structure has the advantages that in the operation process, the whole heating is more uniform, the heating effect of injection molding raw materials is better, the use is more stable, and particularly in the process of multi-cavity simultaneous injection molding, the whole injection molding effect of products in the injection molding cavity is better due to the fact that the size of the cavity is smaller and the flowability of the injection molding raw materials is more sensitive, and the heating state of the injection molding raw materials is controlled more stably.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311395598.4A CN117283815A (en) | 2023-10-26 | 2023-10-26 | A multi-head needle valve hot runner side glue inlet structure and its working method |
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| CN202311395598.4A CN117283815A (en) | 2023-10-26 | 2023-10-26 | A multi-head needle valve hot runner side glue inlet structure and its working method |
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| CN117283815A true CN117283815A (en) | 2023-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119369647A (en) * | 2024-11-11 | 2025-01-28 | 万通(苏州)定量阀系统有限公司 | A device for controlling a three-plate mold point gate switch |
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| CN111300760A (en) * | 2019-11-07 | 2020-06-19 | 深圳市志成金科技有限公司 | Rotary needle valve side glue feeding hot nozzle |
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| EP1941984A1 (en) * | 2006-12-22 | 2008-07-09 | Mold-Masters (2007) Limited | Edge gated injection molding apparatus |
| CN101234522A (en) * | 2006-12-29 | 2008-08-06 | 标准模具（2007）有限公司 | Edge gated injection molding apparatus |
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| CN119369647A (en) * | 2024-11-11 | 2025-01-28 | 万通(苏州)定量阀系统有限公司 | A device for controlling a three-plate mold point gate switch |
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