CN116160628A

CN116160628A - Hot nozzle assembly and hot runner mold with same

Info

Publication number: CN116160628A
Application number: CN202310065133.6A
Authority: CN
Inventors: 李象烈
Original assignee: Yudo Suzhou Hot Runner Systems Co Ltd
Current assignee: Yudo Suzhou Hot Runner Systems Co Ltd
Priority date: 2023-01-17
Filing date: 2023-01-17
Publication date: 2023-05-26

Abstract

The invention provides a hot nozzle assembly and a hot runner mold with the same. The outer side of the body is provided with a mold opening frame, the body comprises a glue outlet end with a containing cavity, and the glue outlet end is abutted against the mold opening frame to form a glue sealing position; at least part of the nozzle tip is arranged in the accommodating cavity, the heating device is arranged on the outer surface of the glue outlet end, and the heating device is arranged close to the tip of the nozzle tip. Above-mentioned hot mouth subassembly and hot runner mould can make the distance between heating device and the sharp point of mouth shorten for the fluid of tip department keeps stable temperature, is favorable to promoting the effect of moulding plastics of product.

Description

Hot nozzle assembly and hot runner mold with same

Technical Field

The invention relates to the technical field of hot runners, in particular to a hot nozzle assembly and a hot runner mold with the same.

Background

The hot runner mold is a mold in which a heating device is used to keep a molten fluid in a runner from solidifying all the time. Because it is shorter than traditional mould shaping cycle, more save raw materials, so hot runner mould has obtained comparatively extensive application in industry development.

The hot nozzle assembly in the existing hot runner mold comprises a body, a nozzle tip partially positioned in the body and a pressing cap arranged between the body and the nozzle tip. The hot nozzle channel is arranged in the body, the nozzle tip channel is arranged in the nozzle tip, the hot nozzle channel is communicated with the nozzle tip channel, fluid flows into the nozzle tip channel from the hot nozzle channel, and then is injected into the die cavity, so that the injection molding of a product is finally realized. However, in the injection molding process, the tip of the tip is fixed through the pressing cap, the tip of the tip extends out of the pressing cap, and the tip is abutted with the die through the pressing cap to form a sealing position, so that the distance between the tip and the heating device is far, the heat transferred from the heating device to the tip is small, the temperature of molten fluid at the tip is unstable, and the injection molding of products is affected.

Disclosure of Invention

The invention provides a hot nozzle assembly and a hot runner mold with the same, and aims to solve the problem that a heating device in a traditional hot nozzle assembly is far away from the tip of a nozzle tip, and the temperature of molten fluid at the tip is unstable.

To achieve one of the above objects, there is provided in one embodiment of the present invention a hot nozzle assembly including:

the plastic sealing device comprises a body, wherein a mold opening frame is arranged on the outer side of the body, the body comprises a plastic outlet end with a containing cavity, and the plastic outlet end is abutted against the inner wall of the mold opening frame to form a plastic sealing position;

the nozzle tip is at least partially arranged in the accommodating cavity;

the heating device is arranged on the outer surface of the glue outlet end and is close to the tip of the mouth tip.

As a further improvement of the above technique, the accommodating chamber includes a first step section and a second step section connected to each other, and the tip is provided with an abutment portion which abuts against a joint surface between the first step section and the second step section.

As a further improvement of the above technology, the hot nozzle assembly further includes a fixing member for connecting the nozzle tip and the body, and the abutting portion is provided with a positioning hole corresponding to the fixing member.

As a further improvement of the above technique, the hot nozzle assembly further includes a heat insulator abutting against an inner wall of the mold opening frame.

As a further improvement of the above technique, the heat insulating member is provided as a spacer provided with a stopper hole through which the fixing member passes.

As a further improvement of the technology, the hot nozzle assembly is further provided with an avoidance cavity for avoiding products.

As a further improvement of the technology, a hot nozzle channel is arranged in the body, the nozzle tip is provided with at least two glue outlet holes communicated with the hot nozzle channel, the nozzle tip is provided with a center line, and the glue outlet holes are arranged around the center line at intervals.

As a further improvement of the technology, the hot nozzle assembly further comprises a positioning piece arranged on the body, and a limiting surface which is abutted with the positioning piece is arranged on the inner wall of the die open frame.

As a further improvement of the technology, the positioning piece is arranged to be sleeved on the limiting flange at the outer side of the body, and the limiting flange is provided with a rotation stopping surface which is abutted with the limiting surface.

In an embodiment of the present invention, there is also provided a hot runner mold including the hot nozzle assembly described above.

Compared with the prior art, the hot nozzle assembly and the hot runner mold with the same provided by the embodiment of the invention have the beneficial effects that: the heating device is arranged on the outer surface of the glue outlet end and is close to the tip of the nozzle tip, the glue outlet end is abutted to the inner wall of the die open frame to form a glue sealing position, the distance between the heating device and the tip of the nozzle tip can be shortened, the tip of the nozzle tip can keep stable temperature, the fluidity of the fluid at the tip of the nozzle tip is improved, and the injection molding effect of a product is improved.

Drawings

FIG. 1 is a schematic view of a hot runner mold provided in an embodiment of the present invention;

FIG. 2 is an exploded view of a thermal nozzle assembly provided in one embodiment of the present invention;

FIG. 3 is a bottom view of a tip provided in an embodiment of the present invention;

fig. 4 is a cross-sectional view taken along A-A in fig. 3.

In the figure: 10. opening a die; 11. a limiting surface; 12. a diverter plate; 13. a housing chamber; 20. a hot nozzle assembly; 21. a body; 211. a glue injection end; 212. a glue outlet end; 213. a receiving chamber; 2131. a first step; 2132. a second step; 2133. a joint surface; 214. a threaded hole; 215. a hot nozzle channel; 216. sealing the glue position; 22. a mouth tip; 221. a tip; 222. a clamping part; 223. an abutting portion; 2231. positioning holes; 224. a glue outlet hole; 225. a center line; 226. a mouth tip channel; 23. a heating device; 24. a fixing member; 25. a heat insulating member; 251. a cushion block; 26. an avoidance cavity; 27. a positioning piece; 271. a rotation stopping surface; 272. and a rotation stop pin.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. 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.

In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 4, in an embodiment of the present invention, a hot runner mold is provided, the hot runner mold includes a mold opening frame 10 and a hot nozzle assembly 20, the hot nozzle assembly 20 is disposed in the mold opening frame 10, and an outer wall of the hot nozzle assembly 20 is adapted to an inner wall of the mold opening frame 10, so as to implement positioning and mounting of the hot nozzle assembly 20.

Specifically, the hot runner mold further includes a manifold 12, and a receiving cavity 13 for receiving the manifold. The flow dividing plate is provided with a flow dividing plate flow passage communicated with the hot nozzle assembly 20, so that molten fluid can be conveyed to the hot nozzle assembly 20 and then conveyed into the die cavity, and the injection molding of the product is completed. It is contemplated that the flow dividing plate 12 and the hot nozzle assembly 20 can be in abutting connection with each other through the bottom surface of the flow dividing plate and the upper end surface of the hot nozzle assembly, so as to realize the communication between the flow dividing plate flow channel and the hot nozzle flow channel. Of course, the manifold 12 and the nozzle block 20 may also be connected by a joint.

In this embodiment, the hot nozzle assembly 20 includes a body 21, a nozzle tip 22, and a heating device 23 provided on a surface of the body 21. The body 21 includes a glue injecting end 211, a glue outlet end 212, and a receiving cavity 213 disposed at the glue outlet end 212, at least a part of the nozzle tip 22 is disposed in the receiving cavity 213, i.e. a part of the structure of the nozzle tip 22 is received in the receiving cavity 213, and another part of the structure extends out of the receiving cavity 213.

The outer side of the body 21 is provided with a mold opening frame 10, and the glue outlet 212 is abutted against the inner wall of the mold opening frame 10 to form a glue sealing position 216. The heating device 23 is arranged on the outer surface of the glue outlet end 212, and the heating device 23 is arranged near the tip 221 of the mouth tip 22. The distance between the heating device 23 and the tip 221 of the tip 22 can be shortened by the arrangement, the hot tip 22 can keep stable temperature, the fluidity of fluid at the tip 221 of the tip 22 is improved, and the injection molding effect of products is improved.

Further, the receiving cavity 213 includes a first stepped section 2131 and a second stepped section 2132 connected. The tip 22 includes a holding portion 222 and an abutting portion 223, the holding portion 222 is inserted into the first step 2131, and the abutting portion 223 abuts against a joint surface 2133 between the first step 2131 and the second step 2132, so that at least a part of the structure of the tip 22 is accommodated in the accommodating cavity 213.

Still further, the hot nozzle assembly 20 further includes a fixing member 24 for fixing the nozzle tip 22, and the abutting portion 223 is provided with a positioning hole 2231 through which the fixing member 24 passes. A fastener 24 may pass through the locating hole 2231 to secure the tip 22 to the body 21.

In this embodiment, the fixing member 24 may be configured as a fastening stud, the fixing member 24 may be connected to the body 21 through a screw structure, and the body 21 is provided with a screw hole 214 corresponding to the positioning hole 2231. Of course, it is contemplated that the attachment 24 may be secured to the tip 22 by other means of attachment, such as a snap-fit arrangement, an adhesive arrangement, or the like.

In this embodiment, to reduce heat transfer to the mold, the hot nozzle assembly 20 further includes a heat shield 25 abutting the inner wall of the mold opening frame 10, the heat shield 25 being mounted between the nozzle tip 22 and the mold opening frame 10, thereby reducing heat transfer of the molten fluid to the mold so that the molten fluid can maintain a stable temperature.

Further, the heat insulating member 25 is provided as a spacer 251, and the spacer 251 is provided with a limiting hole through which the fixing member 24 passes. The heat insulating member 25 may be provided of a material having low thermal conductivity. The cushion block 251 is sleeved on the outer side of the fixing piece 24, and the fixing piece 24 passes through the positioning hole 2231 and is further fixed to the threaded hole 214 of the body 21 through threads, so that the mounting and fixing of the mouth tip 22 are realized.

In this embodiment, the glue outlet end 212 and the glue injection end 211 may be provided with the heating device 23 according to the need, i.e. the heating device 23 may be disposed on the outer surface of the body 21 according to the need, for example, the heating device 23 may be divided into a plurality of sections and distributed on the outer side of the body 21, so as to ensure that the molten fluid in the body 21 can maintain a relatively stable temperature.

Optionally, the heating device 23 is configured as a heating wire wound on the outer side of the body 21, and the body 21 is further provided with a mounting groove for mounting the heating wire. Of course, in an embodiment of the present invention, the heating device 23 is configured as a heating sleeve sleeved on the outer side of the main body 21, and the heating sleeve is configured as a prior art, which is not described herein.

In this embodiment, an interference structure is provided on the product, and the tip 221 of the tip 22 cannot extend to the glue injection port of the mold due to the interference structure, so the hot nozzle assembly 20 is further provided with an avoiding cavity 26 for avoiding the product, so that the tip 221 can be close to the glue injection port of the mold open frame 10, and the structure is more compact.

Alternatively, the relief cavity 26 may be configured as a circle. In some embodiments of the present invention, the avoidance cavity 26 may be configured in other shapes such as square, so that all technical solutions that are the same as or similar to those in the present embodiment are included in the protection scope of the present invention.

In this embodiment, the body 21 is provided with a hot nozzle channel 215, the nozzle tip 22 is provided with at least two glue outlet holes 224 communicating with the hot nozzle channel 215, the nozzle tip 22 has a center line 225, and the glue outlet holes 224 are spaced around the center line 225.

Optionally, three glue outlets 224 are provided. Of course, the number of the glue holes 224 can be set according to the requirement, and all the technical schemes which are the same as or similar to the present embodiment are included in the protection scope of the present invention.

Further, a nozzle tip channel 226 communicated with the hot nozzle runner is further arranged in the nozzle tip 22, and the nozzle tip channel 226 is arranged between the hot nozzle channel 215 and the glue outlet 224. The tip channel 226 has an inlet in communication with the hot nozzle channel 215 and an outlet in communication with the glue outlet 224.

In this embodiment, the hot nozzle assembly 20 further includes a positioning member 27 mounted on the body 21, and the inner wall of the mold opening frame 10 is provided with a limiting surface 11 abutting against the positioning member 27, so as to limit the rotation of the body 21 relative to the mold opening frame 10.

Further, the positioning member 27 is configured as a limiting flange sleeved on the outer side of the body 21, and the limiting flange is provided with a rotation stopping surface 271 abutting against the limiting surface 11. Hot nozzle assembly 20 also includes stop pin 272, stop pin 272 serving to secure the stop flange to the outer surface of body 21.

In summary, the hot nozzle assembly 20 and the hot runner mold with the same provided by the invention have the following beneficial effects: above-mentioned hot nozzle assembly 20 locates the surface of play glued end 212 through heating device 23, and is close to the pointed end 221 setting of sharp 22, goes out glued end 212 butt in the inner wall of mould open frame 10 in order to form and seals the glue position, can make the distance between heating device 23 and the sharp 22 pointed end 221 shorten, can make hot sharp 22 end can keep stable temperature, promotes the mobility of sharp 22 pointed end 221 department fluid, is favorable to promoting the injection molding effect of product.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims

1. A thermal nozzle assembly, comprising:

the plastic sealing device comprises a body, wherein a mold opening frame is arranged on the outer side of the body, the body comprises a plastic outlet end, the plastic outlet end is abutted against the inner wall of the mold opening frame to form a plastic sealing position, and an accommodating cavity is arranged in the plastic outlet end;

the nozzle tip is at least partially arranged in the accommodating cavity;

and the heating device is arranged on the outer surface of the glue outlet end and is close to the tip of the mouth tip.

2. The thermal nozzle assembly of claim 1 wherein said receiving cavity comprises first and second connected steps, said tip being provided with an abutment that abuts against a junction between said first and second steps.

3. The thermal nozzle assembly of claim 2 further comprising a fixture for connecting the tip and the body, the abutment being provided with a locating hole corresponding to the fixture.

4. A hot nozzle assembly as claimed in claim 3, further comprising a thermal shield abutting an inner wall of the die opening frame.

5. The thermal nozzle assembly of claim 4, wherein said thermal shield is provided as a spacer block provided with a spacing hole for said fixture to pass through.

6. The thermal nozzle assembly of claim 1 further provided with a relief cavity for relief of product.

7. The thermal nozzle assembly of claim 1 wherein a thermal nozzle passage is provided in said body, said nozzle tip being provided with at least two glue outlet openings in communication with said thermal nozzle passage, said nozzle tip having a centerline, said glue outlet openings being spaced about said centerline.

8. The hot nozzle assembly of claim 1, further comprising a positioning member provided on the body, wherein the inner wall of the mold open frame is provided with a limiting surface abutting against the positioning member.

9. The thermal nozzle assembly of claim 8, wherein the positioning member is configured as a stop flange sleeved on the outer side of the body, and the stop flange is provided with a rotation stopping surface abutting against the stop surface.

10. A hot runner mold comprising a hot nozzle assembly as claimed in any one of claims 1 to 9.