CN217495047U

CN217495047U - Hot runner system that sandwich formula layering material was moulded plastics

Info

Publication number: CN217495047U
Application number: CN202221692786.4U
Authority: CN
Inventors: 季海螺
Original assignee: Taizhou Huangyan Hongqi Plastic Mould Co ltd
Current assignee: Taizhou Huangyan Hongqi Plastic Mould Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-09-27
Anticipated expiration: 2032-07-04

Abstract

The utility model relates to the technical field of injection molding, in particular to a hot runner system for sandwich type layered material injection molding, which comprises an installation manifold plate, wherein the middle part of the installation manifold plate is provided with a T-shaped installation groove, one end inside the installation groove is provided with an injection nozzle, the injection nozzle comprises an inner body, an outer tip I, an inner tip and an outer tip II, the inner body is hollow, the middle part of the bottom end is provided with an opening, the bottom end of the valve rod is arranged into a cone shape, a cavity is formed between the valve rod and the openings arranged at the lower ends of the outer tip I, the inner tip and the outer tip II during use, a mixing space is provided for the material, and compared with the case, the hot runner system can be used without adjusting the valve rod to a specific position during use, can facilitate the injection of the material, is favorable for the formation of the layering, and has more obvious layering effect, and the valve rod can also adjust the flow of the first material flow channel when in use, so that the thickness of the layered layer can be conveniently controlled.

Description

Hot runner system that sandwich formula layering material was moulded plastics

Technical Field

The utility model relates to an injection moulding technical field specifically is a hot runner system that sandwich formula layered material was moulded plastics.

Background

Sandwich injection moulding, also known as co-injection moulding, is a process in which a "skin" material and a different but compatible "core" material are injected into a mould cavity either sequentially or simultaneously, the process producing an article having a sandwich-type structure with the core material embedded between the skin material layers, the co-injection being of a two-component or multi-component injection moulding process. However, unlike other multi-component molding processes, the coinjection is characterized in that the inner core material can be completely wrapped by the outer skin material, the process is completed by injecting two different materials continuously or simultaneously from the same gate, the process can flexibly utilize the optimal characteristics of each material to reduce the material cost, injection pressure, mold clamping force tonnage and residual stress, improve the performance of the molded product or obtain specific engineering effect, the patent number is CN109732853B, Chinese invention patent named as a hot runner nozzle structure of three-layer material injection molding discloses that' the injection mold comprises a cold mold, an injection nozzle, an outer injection nozzle, an inner injection nozzle, an injection nozzle seat and a valve needle, the injection nozzle, the outer injection nozzle, the inner injection nozzle and the injection nozzle seat are all hollow structures and have a central opening at the bottom, the injection nozzle seat, the outer injection nozzle and the inner injection nozzle are sequentially coaxially nested and matched from outside to inside, and are provided with circumferential positioning structures, the outer nozzle is coaxially nested and matched with the nozzle, the nozzle is fixedly connected with the bottom opening end of the nozzle base, the bottom of the nozzle is embedded in a cavity of a cold die, a valve needle slidably penetrates through the nozzle, the outer nozzle, the inner nozzle and the nozzle base along the axis, the diameter of the valve needle is matched with the central opening calibers of the nozzle, the outer nozzle and the inner nozzle, the top end of the valve needle is connected with a valve needle driving device, a base material runner and an interlayer material runner are respectively arranged on the nozzle base and the inner nozzle, an interlayer material runner is arranged in the outer nozzle, a base material runner is arranged in the outer nozzle, an output port of the base material runner is positioned at the centers of the bottom of the nozzle and the inner nozzle, base material is injected through the inner cavities of the nozzle and the inner nozzle, interlayer material is injected into the inner cavity of the outer nozzle, and the nested structures of the nozzle, the outer nozzle and the inner nozzle make respective inner cavities mutually independent under the driving of injection pressure, the base material and the interlayer material respectively flow along the base material flow channel and the interlayer material flow channel without mutual interference. The valve needle driving device drives the valve needle to accurately move axially, the valve needle can stay at the central opening at the bottom of any one of the injection nozzle, the outer injection nozzle and the inner injection nozzle to close the output port of the corresponding material runner, so that molten base materials and interlayer materials can be injected out through the output port of the unclosed material runner according to a set sequence and enter a cavity of a cold die, and the molten base materials and the interlayer materials are cooled and formed layer by layer in the cavity of the cold die to finally form a base body with an inner layer and an outer layer and an intermediate interlayer.

There is therefore a need for a sandwich-type layered material injection molding hot runner system that ameliorates the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hot runner system that sandwich formula layered material was moulded plastics to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a hot runner system for sandwich type layered material injection molding comprises an installation manifold plate, wherein a T-shaped installation groove is formed in the middle of the installation manifold plate, an injection nozzle is arranged at one end inside the installation groove and comprises an inner body, an outer body, a first outer nozzle tip, a second inner nozzle tip and a second outer nozzle tip, the inner body is hollow, an opening is formed in the middle of the bottom end of the inner body, the first outer nozzle tip is arranged in the opening in the bottom of the inner body, an inner nozzle tip is arranged in the first outer nozzle tip, the lower end of the inner body is also provided with the second outer nozzle tip, the first inner nozzle tip and the second outer nozzle tip are hollow, an opening is formed in the central part of the bottom end of the inner body, a valve rod penetrates through the middle of the inner body, the upper end of the valve rod is connected with a needle valve driving device, a first material flow passage is formed between the middle parts of the inner body and the inner nozzle tip, and two sides of the outer body are respectively provided with a first material inlet and a second material inlet, the upper ends of the first material inlet and the second material inlet are all penetrated and extended to the upper end of the inner body, a third material flow channel is formed between the first outer nozzle tip and the inner nozzle tip, the third material flow channel is in butt joint with the first material inlet through a first circulation channel, a second material flow channel is formed between the first outer nozzle tip and the second outer nozzle tip, the second material flow channel is in butt joint with the second material inlet through a second circulation channel, a connection flow channel is arranged between the second material inlet and the first material flow channel, the lower end of the valve rod sequentially penetrates through the inner body, the inner nozzle tip, the first outer nozzle tip and the second outer nozzle tip, and the lower end of the valve rod is conical.

As a preferred embodiment of the present invention, the diameter of the lower end of the valve rod is smaller than the diameter of the bottom openings of the inner tip, the first outer tip, and the second outer tip.

As the utility model discloses preferred scheme, the mounting groove is inside to be provided with runner one and runner two respectively, the one end of runner one with advance gluey mouthful one and be connected, the one end of runner two with advance gluey mouthful two and be connected.

As the utility model discloses preferred scheme, interior body upper end is connected with the butt joint piece, and the injection channel one and the injection channel two that communicate with material entry one and material entry two are seted up respectively to the butt joint piece both sides.

As the utility model discloses preferred scheme, injection channel one with runner one end butt joint intercommunication, and injection channel two with two one end butt joint intercommunications of runner.

As the preferred proposal of the utility model, the openings at the middle parts of the two bottom ends of the inner body, the inner tip, the first outer tip and the second outer tip are coaxial.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses in set the taper shape through the valve rod bottom, valve rod and outer mouth point one during the use, all form the cavity between the opening that two lower extremes of interior mouth point and outer mouth point were seted up, for the material provides mixed space, for contrast case, when using, need not to adjust the valve rod to the particular position and can use, the injection of the material of can being convenient for, be favorable to the formation of layering, and the layering effect is more obvious, and the valve rod still can adjust the flow of material runner one during the use, be convenient for hold the layering thickness.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic sectional structure view of the injection nozzle of the present invention.

In the figure: the mounting manifold comprises a mounting manifold plate 1, a first glue inlet 2, a second glue inlet 3, a first flow channel 4, a second flow channel 5, an injection nozzle 6, a first material inlet 7, an outer body 8, an inner nozzle tip 9, an inner body 10, a valve rod 11, a second material inlet 12, a second outer nozzle tip 13, a first material flow channel 14, a second material flow channel 15, a third material flow channel 16, a mounting groove 17, a connecting flow channel 18 and a first outer nozzle tip 19.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention based on the embodiments of the present invention.

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the present invention are presented. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, the present invention provides a technical solution:

in the embodiment, referring to fig. 1 and 2, a sandwich-type hot runner system for injection molding of layered materials includes a mounting manifold 1, a mounting groove 17 having a "T" shape is formed in the middle of the mounting manifold 1, a first flow channel 4 and a second flow channel 5 are respectively disposed in the mounting groove 17, one end of the first flow channel 4 is connected to a first glue inlet 2, one end of the second flow channel 5 is connected to a second glue inlet 3, a butt-joint member is connected to the upper end of an inner body 10, a first injection channel and a second injection channel are respectively disposed at two sides of the butt-joint member and are communicated with a first material inlet 7 and a second material inlet 12, the first injection channel is in butt-joint communication with one end of the first flow channel 4, the second injection channel is in butt-joint communication with one end of the second flow channel 5, an injection nozzle 6 is disposed at one end of the inside of the mounting groove 17, the injection nozzle 6 includes an inner body 10, an outer body 8, a first outer tip 19, an inner tip 9 and a second outer tip 13, the inner body 10 is hollow and has an opening at the middle portion of the bottom end, the first outer nozzle tip 19 is arranged in an opening at the bottom of the inner body 10, the inner nozzle tip 9 is arranged in the first outer nozzle tip 19, the second outer nozzle tip 13 is further arranged at the lower end of the inner body 10, the first outer nozzle tip 19, the first inner nozzle tip 9 and the second outer nozzle tip 13 are hollow, an opening is formed in the center of the bottom end of the first outer nozzle tip 19, a valve rod 11 penetrates through the middle of the inner body 10, a needle valve driving device is connected to the upper end of the valve rod 11, a first material flow passage 14 is formed between the middle of the inner body 10 and the middle of the inner nozzle tip 9, a first material inlet 7 and a second material inlet 12 are respectively arranged on two sides of the outer body 8, the upper ends of the first material inlet 7 and the second material inlet 12 penetrate through and extend to the upper end of the inner body 10, a third material flow passage 16 is formed between the first outer nozzle tip 19 and the inner nozzle tip 9, the third material flow passage 16 is in butt joint with the first material inlet 7 through a first flow passage, and a second material flow passage 15 is formed between the first outer nozzle tip 19 and the second outer nozzle tip 13, the material flow channel II 15 is in butt joint with the material inlet II 12 through a flow channel II, a connecting flow channel 18 is arranged between the material inlet II 12 and the material flow channel I14, the lower end of the valve rod 11 sequentially penetrates through the inner body 10, the inner nozzle tip 9, the outer nozzle tip I19 and the outer nozzle tip II 13, the lower end of the valve rod 11 is conical, the diameter of the lower end of the valve rod 11 is smaller than that of the bottom end openings of the inner nozzle tip 9, the outer nozzle tip I19 and the outer nozzle tip II 13, the material is injected through the glue inlet II 3, flows into the injection channel II through the flow channel II 5, passes through the material inlet II 12, the valve rod 11 is adjusted at the moment, the lower end of the valve rod 11 is adjusted to be adjusted to the lower end opening of the outer nozzle tip I19, the lower end of the material flow channel I14 is closed at the moment, the material is injected through the material flow channel II 15, after the injection is finished, the valve rod 11 is adjusted, the lower end opening of the inner nozzle tip 9 is closed, the material is injected through the glue inlet I2, the material enters the first injection channel through the first flow channel 4, then enters the first material inlet 7, enters the third material flow channel 16 along the first flow channel, at the moment, a cavity exists between the lower end of the valve rod 11 and the first outer nozzle tip 19, the second material can be injected through the first outer nozzle tip 19, after the injection is completed, the valve rod 11 is adjusted, the lower end of the valve rod 11 is enabled to ascend, at the moment, the connecting flow channel 18 is communicated, and once the material is injected through the first material flow channel 14 and the second material flow channel 15 together, the layering is favorably formed, and the layering effect is more obvious.

In the embodiment, referring to fig. 2, the openings at the bottom middle parts of the inner body 10, the inner tip 9, the first outer tip 19 and the second outer tip 13 are coaxial.

The working principle is as follows: when the injection valve is used, the material I is injected through the glue inlet II 3, flows into the injection channel II through the flow channel II 5, passes through the material inlet II 12, the valve rod 11 is adjusted at the moment, the lower end of the valve rod 11 is adjusted to be an opening at the lower end of the outer nozzle tip I19, the lower end of the material flow channel I14 is closed at the moment, the material is injected through the material flow channel II 15, after the injection is completed, the valve rod 11 is adjusted to enable the valve rod 11 to close the opening at the lower end of the inner nozzle tip 9, the material is injected through the glue inlet I2, enters the injection channel I through the flow channel I4, then enters the material inlet I7, enters the material flow channel III 16 along the flow channel I, at the moment, a cavity exists between the lower end of the valve rod 11 and the outer nozzle tip I19, the material II can be injected through the outer nozzle tip I19, after the injection is completed, the valve rod 11 is adjusted to enable the lower end of the valve rod 11 to ascend, at the moment, the connecting flow channel 18 is communicated, the first material is injected together through the first material flow channel 14 and the second material flow channel 15, layering is facilitated to be formed, the layering effect is obvious, injection can be performed without adjusting the valve rod 11 in place during injection, and the situation that layering between injected materials is not obvious due to the fact that the valve rod 11 cannot be adjusted in place is avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sandwich type hot runner system for injection molding of layered materials comprises an installation manifold plate (1), wherein the middle of the installation manifold plate (1) is provided with a T-shaped installation groove (17), one end inside the installation groove (17) is provided with an injection nozzle (6), the injection nozzle (6) comprises an inner body (10), an outer body (8), a first outer nozzle tip (19), an inner nozzle tip (9) and a second outer nozzle tip (13), the inner body (10) is hollow, the middle of the bottom end of the inner body is provided with an opening, the first outer nozzle tip (19) is arranged in the opening at the bottom of the inner body (10), the inner nozzle tip (9) is arranged in the first outer nozzle tip (19), the second outer nozzle tip (13) is further arranged at the lower end of the inner body (10), the first outer nozzle tip (19), the inner nozzle tip (9) and the second outer nozzle tip (13) are all hollow, the center of the bottom end of the outer nozzle tip (19) is provided with an opening, interior body (10) middle part is run through and is provided with valve rod (11), and valve rod (11) upper end is connected with needle valve drive arrangement, its characterized in that: a first material flow channel (14) is formed between the middle part of the inner body (10) and the middle part of the inner nozzle tip (9), a first material inlet (7) and a second material inlet (12) are respectively arranged on two sides of the outer body (8), the upper ends of the first material inlet (7) and the second material inlet (12) extend to the upper end of the inner body (10), a third material flow channel (16) is formed between the first outer nozzle tip (19) and the inner nozzle tip (9), the third material flow channel (16) is in butt joint with the first material inlet (7) through a first flow passage, a second material flow channel (15) is formed between the first outer nozzle tip (19) and the second outer nozzle tip (13), the second material flow channel (15) is in butt joint with the second material inlet (12) through a second flow passage, and a connecting flow channel (18) is arranged between the second material inlet (12) and the first material flow channel (14), the lower end of the valve rod (11) sequentially penetrates through the inner body (10), the inner nozzle tip (9), the first outer nozzle tip (19) and the second outer nozzle tip (13), and the lower end of the valve rod (11) is conical.

2. The sandwich layered material injection molding hot-runner system according to claim 1, wherein: the diameter of the lower end of the valve rod (11) is smaller than the diameter of the bottom end openings of the inner nozzle tip (9), the outer nozzle tip I (19) and the outer nozzle tip II (13).

3. The sandwich layered material injection molding hot runner system according to claim 1, wherein: the mounting groove (17) is internally provided with a first runner (4) and a second runner (5) respectively, one end of the first runner (4) is connected with the first glue inlet (2), and one end of the second runner (5) is connected with the second glue inlet (3).

4. The sandwich layered material injection molding hot runner system according to claim 3, wherein: the upper end of the inner body (10) is connected with a butt joint piece, and a first injection channel and a second injection channel which are communicated with the first material inlet (7) and the second material inlet (12) are respectively arranged on two sides of the butt joint piece.

5. The sandwich layered material injection molding hot runner system according to claim 4, wherein: the first injection channel is in butt joint communication with one end of the first flow channel (4), and the second injection channel is in butt joint communication with one end of the second flow channel (5).

6. The sandwich layered material injection molding hot runner system according to claim 1, wherein: the openings in the middle of the bottom ends of the inner body (10), the inner nozzle tip (9), the first outer nozzle tip (19) and the second outer nozzle tip (13) are coaxial.