CN213860471U

CN213860471U - Hot nozzle, hot runner system and hot runner mold

Info

Publication number: CN213860471U
Application number: CN202022279225.9U
Authority: CN
Inventors: 贺立明; 董鹏鹏; 王艳云; 张志刚
Original assignee: Shenzhen Mould Tip Technology Co ltd
Current assignee: Shenzhen Mould Tip Technology Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-08-03
Anticipated expiration: 2030-10-13

Abstract

The utility model discloses a hot nozzle, a hot runner system and a hot runner mold, which comprises a nozzle body, a nozzle head and a nozzle core, wherein a first flow passage is arranged in the nozzle body; the nozzle head is fixed at one end of the nozzle body, a containing hole is arranged in the nozzle head, and one end of the containing hole is communicated with one end of the first flow channel; the outer circumferential surface of the nozzle core is provided with a plurality of helical blades, the helical blades are arranged in the containing hole, and the containing hole is divided into a plurality of second flow passages by the helical blades. The utility model discloses a hot is chewed and can be made the additive fully fuse in the plastic raw materials.

Description

Hot nozzle, hot runner system and hot runner mold

Technical Field

The utility model belongs to the technical field of hot runner mold and specifically relates to a hot chew, hot runner system and hot runner mold are related to.

Background

With the continuous development of hot runner technology, the needle valve type hot runner system is more and more favored by enterprises. The needle valve type hot runner system can control the problems of welding marks, deformation and the like of products, and the products are beautiful in sprue inlet and improve the product quality.

In order to obtain plastic products with special properties, additives such as flame retardants, fluorescent powders or toughening agents are often added to plastic raw materials, and if the additives are not sufficiently fused during injection molding, the surface of the product is provided with lines, and the appearance of the product is not good.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a hot nozzle, can make the additive fully fuse in the plastic raw materials.

The utility model also provides a hot runner system that has above-mentioned heat and chew.

The utility model discloses still provide a hot runner mold who has above-mentioned hot runner system.

According to the utility model discloses a heat is chewed according to the embodiment of the first aspect, include: the mouth body is internally provided with a first flow passage; the nozzle head is fixed at one end of the nozzle body, an accommodating hole is formed in the nozzle head, and one end of the accommodating hole is communicated with one end of the first flow channel; the spiral blade is arranged in the containing hole, and the containing hole is divided into a plurality of second flow passages by the spiral blades.

According to the utility model discloses heat is chewed, has following beneficial effect at least: the one end in holding the hole communicates with the one end of first runner, the periphery face of the one end of chewing the core is provided with multi-disc helical blade, multi-disc helical blade separates into a plurality of second runners with holding the hole, that is, when the melten gel flowed into holding the hole from first runner, can be divided into the stranded by the second runner, helical blade is the heliciform, the second runner of separating also is the heliciform, the helical second runner can make the stroke of melten gel lengthen, and have the effect of stirring the melten gel, thereby make the additive fully fuse in the plastic raw materials before flowing into the mould.

According to some embodiments of the utility model, be provided with the locating hole in chewing the core, the locating hole is used for fixing a position the needle.

According to some embodiments of the utility model, chew the core and insert and establish in the holding hole, it is provided with the arch on the core to chew, chew overhead being provided with the recess, protruding card is established in the recess.

According to some embodiments of the invention, the mouth head and mouth body threaded connection.

According to some embodiments of the utility model, keep away from of holding hole the one end of first runner is provided with seals the mouth of gluing.

According to some embodiments of the invention, the heating element is located in the mouth of the body, and the heating element is located in the mouth of the body.

According to the utility model discloses a some embodiments, chew the body and keep away from the one end of chewing the head is provided with the ring channel, keeping away from of first runner the one end in holding the hole is located in the region that the ring channel encloses.

According to some embodiments of the utility model, chew the body and keep away from the one end of chewing the head still is provided with and lifts by crane screw hole and location pinhole.

According to the utility model discloses a hot runner system of second aspect embodiment, chew including foretell heat, still include the flow distribution plate, be provided with the third runner in the flow distribution plate, the third runner with first runner intercommunication.

According to the utility model discloses hot runner system has following beneficial effect at least: the melten gel flows into the second runner through third runner and first runner, and during the spiral helicine second runner made the stroke of melten gel elongated, and can stir the melten gel, the additive was before flowing into the mould, fully fused in the plastic raw materials, and the line is difficult to keep on the product surface, and product appearance is good.

According to the utility model discloses a hot runner mold of third aspect embodiment, including foretell hot runner system, still include the mould body, it has the mounting groove to open on the mould body, hot runner system fixes in the mounting groove.

According to the utility model discloses hot runner mold has following beneficial effect at least: by using the hot runner system, the surface of a product injected by the mold body is not easy to leave lines, and the product has good appearance.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

FIG. 1 is a schematic view of a hot nozzle according to an embodiment of the present invention;

FIG. 2 is a perspective view of the mouthpiece of FIG. 1;

fig. 3 is a top view of the mouthpiece of fig. 1;

fig. 4 is a cross-sectional view of the mouthpiece of fig. 3 taken along section a-a;

fig. 5 is a perspective view of the chewing core of fig. 1;

fig. 6 is a front view of the chewing core of fig. 1;

fig. 7 is a top view of the chewing core of fig. 1.

Reference numerals: heating element 100, hot nozzle body 200, nozzle body 210, positioning pin hole 211, lifting threaded hole 212, annular groove 213, first flow channel 214, nozzle core 220, positioning hole 221, protrusion 222, helical blade 223, nozzle head 230, groove 231, accommodating hole 232, hexagonal position 233, sealing glue opening 234 and second flow channel 240.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1, 4 and 5, a hot nozzle according to an embodiment of the present invention includes a hot nozzle body 200, and the hot nozzle body 200 includes a nozzle body 210, a nozzle core 220 and a nozzle tip 230. Body 210 is provided with first flow channel 214 along the upper and lower direction, and first flow channel 214 has run through body 210, and first flow channel 214 can supply the molten gel to pass through. Mouthpiece 230 is fixed to the lower end of body 210, and mouthpiece 230 has receiving hole 232 (see fig. 4) therein, the upper end of receiving hole 232 communicating with the lower end of first flow path 214. The outer circumferential surface of the core of the nozzle 220 is provided with a plurality of spiral blades 223 (see fig. 5), the plurality of spiral blades 223 are placed in the accommodation hole 232, and the plurality of spiral blades 223 divide the accommodation hole 232 into a plurality of second flow passages 240 (see fig. 1).

The molten resin flowing from the first flow path 214 into the receiving hole 232 is divided into a plurality of strands by the second flow paths 240. The spiral blade 223 is spiral, the separated second flow channel 240 is also spiral, and the spiral second flow channel 240 can prolong the stroke of the molten gel; the molten gel flows along the spiral flow path to be disturbed as compared with the linear flow path, so that the second flow path has an effect of stirring the molten gel. Thus, the additives are fully incorporated into the plastic material prior to flowing into the mold.

Referring to fig. 1, 5 to 7, in some embodiments of the invention, locating holes 221 are provided in core 220, locating holes 221 being for locating the valve needle. Through setting up locating hole 221, can inject the position of needle, guarantee that the needle can not deviate from preset position, seal the glue more thoroughly, be difficult to leak and glue, and the needle is difficult to damage.

Referring to fig. 1, 2 and 5, in some embodiments of the present invention, the nozzle core 220 is inserted into the receiving hole 232, the upper end of the nozzle core 220 is provided with a protrusion 222, the upper end of the nozzle 230 is provided with a groove 231, and the protrusion 222 is caught in the groove 231. Groove 231 prevents downward movement of core 220 along receiving hole 232 and prevents rotation of core 220 in receiving hole 232 about the vertical axis, while body 210 prevents core 220 from coming out of receiving hole 232. Thus, the attachment and fixation of the chewing core 220 can be simply and quickly achieved.

Two grooves 231 are arranged, two grooves 231 are oppositely arranged, two protrusions 222 are also oppositely arranged, and the two protrusions 222 are matched with the two grooves 231, so that the connection between the chewing core 220 and the chewing head 230 is more stable. In other embodiments, one, three or other number of grooves 231 may be provided, and the number of protrusions 222 is equal to the number of grooves 231.

Referring to fig. 1 and 5, in some embodiments of the present invention, the upper end of tip 230 is provided with an external thread, the lower end of tip body 210 is provided with an internal thread, and the upper end of tip 230 is screwed into the lower end of tip body 210, thereby achieving connection fixation. The threaded connection is used as a common connection mode, can be repeatedly disassembled, has good sealing performance and can meet the use requirement.

Before tip 230 is installed, core 220 may be placed in receiving hole 232 and tip 230 may be fixed to the lower end of body 210.

In other embodiments, tip 230 and body 210 may be secured by interference fit.

Referring to fig. 1 and 2, in some embodiments of the invention, there is also provided a six-orientation 233 on beak 230. Six position 233 cooperates with tools such as spanner, etc. to screw nozzle tip 230 conveniently, and realize the installation and fixation of nozzle tip 230.

Referring to fig. 1, 3 and 4, to implement the sealing, a sealing opening 234 is disposed at an end (i.e., a lower end) of the accommodating hole 232 far from the first flow channel 214. The inner wall of the glue sealing opening 234 is a conical surface with a large upper part and a small lower part, and the lower end of the needle valve is a circular table with a large upper part and a small lower part. The lower end of the needle valve is inserted into the sealing opening 234 and is attached to the inner wall of the sealing opening 234, and then sealing can be performed; after the lower end of the needle valve is separated from the unsealing glue opening 234, glue can be fed.

Referring to fig. 1, in some embodiments of the invention, the mouthpiece further comprises a heating element 100, heating element 100 being located around the outer circumferential surface of body 210. The heat generated by the heating element 100 is conducted to the glue in the first flow channel 214 through the nozzle body 210, so that the glue can be kept in a molten state, and the smooth injection molding can be ensured.

Specifically, the heating element 100 is a copper jacket heater, and the copper jacket heater includes a copper jacket and an electric heating tube. The copper sheathing is hollow, and the copper sheathing cover is established outside chewing the body 210, and the surface of copper sheathing is opened has spiral helicine recess, and electric heating pipe inlays in the recess. The copper sheath has good thermal conductivity and is able to conduct heat well to body 210.

In other embodiments, heating element 100 may be a ceramic heater that uniformly coats the outer surface of body 210.

Referring to fig. 1, in some embodiments of the present invention, the end (i.e., upper end) of body 210 remote from tip 230 is provided with annular groove 213, and the end (i.e., upper end) of first flow passage 214 remote from receiving aperture 232 is located in the area bounded by annular groove 213. When the hot nozzle is installed on the splitter plate, a sealing ring can be placed in the annular groove 213, so that molten rubber is prevented from flowing out from a gap between the hot nozzle and the splitter plate, and the sealing performance is improved.

Referring to fig. 1, in some embodiments of the present invention, the end of body 210 distal from (i.e., the upper end of) tip 230 is also provided with a lifting threaded hole 212 and a locating pin hole 211. After the lifting lugs are screwed into the lifting threaded holes 212, the hot nozzle can be conveniently conveyed. After the positioning pin is inserted into the positioning pin hole 211, the hot nozzle can be prevented from rotating relative to the splitter plate, and positioning is realized.

Referring to fig. 1, the hot runner system according to the embodiment of the present invention includes the above-mentioned heat nozzle, and further includes a splitter plate, in which a third flow channel is provided, and the third flow channel is communicated with the first flow channel 214. When the injection mold adopts the hot runner system as an injection runner, the molten glue flows into the second runner 240 through the third runner and the first runner 214, the spiral second runner 240 enables the stroke of the molten glue to be lengthened, the molten glue can be stirred, the additive is fully fused in the plastic raw material before flowing into the mold, the surface of the product is not easy to leave grains, and the appearance of the product is good.

A plurality of hot nozzles can be arranged on the splitter plate, thereby improving the injection molding efficiency.

In addition, for the needle valve type hot runner system, the system further comprises a valve needle and a driving device, wherein the upper end of the valve needle is fixed on the output end of the driving device, and the lower end of the valve needle sequentially passes through the first flow passage 214 and the positioning hole 221. Under the action of the driving device, the lower end of the valve needle is matched with the glue sealing port 234 to realize glue sealing and glue feeding.

The drive means is typically selected to be a pneumatic cylinder, and in some embodiments, the drive means may also be selected to be a linear motor.

According to the utility model discloses hot runner mold, including foretell hot runner system, still include the mould body, it has the mounting groove to open on the mould body, and hot runner system fixes in the mounting groove. When the hot runner system is installed, the hot runner system can be installed and tightly pressed in the installation groove through the panel, and the panel and the die body are fixed through the fastening piece. And a cavity for forming the product is arranged in the die body, the rubber material flows into the cavity, and the product can be formed after cooling.

By using the hot runner system, the surface of a product injected by the mold body is not easy to leave lines, and the product has good appearance.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims

1. A hot nozzle, comprising:

the mouth body is internally provided with a first flow passage;

the nozzle head is fixed at one end of the nozzle body, an accommodating hole is formed in the nozzle head, and one end of the accommodating hole is communicated with one end of the first flow channel;

the spiral blade is arranged in the containing hole, and the containing hole is divided into a plurality of second flow passages by the spiral blades.

2. The thermal nozzle of claim 1, wherein locating holes are provided in the nozzle core for locating the valve needle.

3. The hot nozzle according to claim 1, wherein said nozzle core is inserted into said receiving hole, said nozzle core is provided with a protrusion, said nozzle head is provided with a groove, and said protrusion is engaged in said groove.

4. The hot nozzle of claim 1, wherein the nozzle tip is in threaded connection with the body.

5. The heat nozzle according to claim 1, wherein an end of the receiving hole remote from the first flow channel is provided with a glue seal.

6. A hot nozzle according to any one of claims 1 to 5, further comprising a heating element which surrounds the outer circumferential surface of the nozzle body.

7. A hot nozzle according to any one of claims 1 to 5, wherein an annular groove is provided at the end of the body remote from the nozzle tip, and the end of the first flow passage remote from the receiving aperture is located in the region bounded by the annular groove.

8. The heat nozzle according to any one of claims 1 to 5, wherein a lifting threaded hole and a positioning pin hole are further formed in one end of the nozzle body away from the nozzle head.

9. A hot runner system, comprising the hot nozzle of any one of claims 1 to 8, and further comprising a manifold, the manifold having a third flow channel disposed therein, the third flow channel being in communication with the first flow channel.

10. A hot-runner mold, comprising the hot-runner system of claim 9, and further comprising a mold body, wherein the mold body defines a mounting slot, and wherein the hot-runner system is secured in the mounting slot.