CN216804260U

CN216804260U - Novel corrosion-resistant stainless steel hot nozzle

Info

Publication number: CN216804260U
Application number: CN202123317326.1U
Authority: CN
Inventors: 李海龙
Original assignee: Moshuo Industry Dongguan Co ltd
Current assignee: Moshuo Industry Dongguan Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-06-24
Anticipated expiration: 2031-12-24

Abstract

The utility model belongs to the technical field of hot runner mold equipment, and particularly relates to a novel corrosion-resistant stainless steel hot nozzle which comprises a nozzle body, wherein the inner side of the nozzle body is fixedly connected with an inner cylinder, a hot nozzle flow channel is arranged at the position of the inner axis of the inner cylinder along the length direction of the inner cylinder, a valve needle is arranged at the lower end of the hot nozzle flow channel and is matched with a sprue end at the bottom of the inner cylinder, a discharge hole penetrating to the lower part is formed in the bottom of the inner side of the sprue end, and the inner diameter of the discharge hole is gradually increased along the end direction of the sprue end. According to the utility model, the inner hole wall of the hot runner is processed by electroplating, the inner wall is smooth after electroplating, an adhesion layer of plastic in the runner is reduced, the yellowing risk is reduced, and further the yellowing reject ratio of a product is reduced.

Description

Novel corrosion-resistant stainless steel hot nozzle

Technical Field

The utility model relates to the technical field of hot runner mold equipment, in particular to a novel corrosion-resistant stainless steel hot nozzle.

Background

With the development of injection molding technology, hot runner technology is more and more widely used in injection molds, and a hot nozzle is the most important component in a hot runner system and mainly conveys plastic melt conveyed by a splitter plate to a mold cavity so as to be injection molded into a product.

1. Firstly, in the injection molding production process of the same type of open hot runner system, PVC plastics are corrosive, the inner wall of a hot runner is easily corroded and worn, and the corrosion position is easily subjected to residual glue to cause yellowing of a product, so that the quality of the product is reduced.

2. Secondly, chew body position and lack protective structure, receive the collision influence easily, and then influence the life-span that the heat was chewed, and impurity such as external dust enters into the inside of chewing the body easily when using, and then influences the performance that the heat was chewed.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a novel corrosion-resistant stainless steel hot nozzle, the inner hole wall of a hot runner is processed by electroplating, the inner wall of the hot runner is very smooth after electroplating, so that the flow friction force of plastic injection molding can be reduced, meanwhile, the adhesion layer of the plastic in a flow channel is reduced, the yellowing risk is reduced, further, the yellowing reject ratio of a product is reduced, meanwhile, a protection mechanism is arranged on the nozzle body, the safety protection when the nozzle body is used can be realized, and the problems of poor processing quality and poor protection effect of the hot nozzle in the prior art are solved.

(II) technical scheme

The utility model specifically adopts the following technical scheme for realizing the purpose:

a novel corrosion-resistant stainless steel hot nozzle comprises a nozzle body, wherein an inner cylinder is fixedly connected to the inner side of the nozzle body, a hot nozzle flow channel is arranged in the inner axis of the inner cylinder along the length direction of the inner cylinder, a valve needle is arranged at the lower end of the hot nozzle flow channel, the valve needle is matched with a sprue end at the bottom of the inner cylinder, a discharge port penetrating to the lower side is formed in the bottom of the inner side of the sprue end, and the inner diameter of the discharge port is gradually increased along the end direction of the sprue end;

the injection nozzle further comprises a positioning sleeve fixedly connected to the bottom of the inner side of the inner barrel and used for carrying out safety protection on a connection position of the sprue end and the valve needle, and a buffering protection pad is fixedly connected to the outer wall of the nozzle body.

Further, the valve pin is matched with the limiting groove of the gate end, and the bottom of the limiting groove is in through connection with the top of the discharge hole.

Further, the valve needle comprises a needle core fixedly connected to the lower end of the hot nozzle flow channel and a core cavity arranged inside the needle core, and a needle head connected with the core cavity and extending to the discharge port is arranged at the bottom of the needle core.

Furthermore, a positioning piece is fixedly connected between the mouth body and the inner cylinder, and a bulge is arranged at the joint of the top of the inner cylinder and the mouth body.

Furthermore, a heater for heating and insulating the hot nozzle flow channel is arranged in the nozzle body.

Furthermore, the positioning sleeve comprises a lower barrel limiting the upper part of the sprue end, and an upper barrel integrally formed at the upper end of the lower barrel and used for limiting and protecting the valve needle, an annular splicing piece fixedly connected to the base of the lower surface of the lower barrel and used for installing the positioning sleeve at the bottom of the inner side of the inner barrel, and a sealing gasket is arranged at the joint of the annular splicing piece and the inner barrel.

(III) advantageous effects

Compared with the prior art, the utility model provides a novel corrosion-resistant stainless steel hot nozzle which has the following beneficial effects:

1. the utility model achieves the purpose of enhancing the product quality by improving the structure of the hot runner, the inner diameter of the discharge port is gradually increased along the end part direction of the sprue end and is easy to electroplate, therefore, the utility model reduces the yellowing reject ratio of the product by improving the material, the process and the structure of the hot runner.

2. According to the utility model, the outer wall of the nozzle body is fixedly connected with the buffering protection pad, so that the collision protection effect can be formed, the protection of fine components in the nozzle body is formed, meanwhile, the sealing washer is arranged at the joint of the inner cylinder, so that the impurities such as dust can be prevented from entering, the protection of the inner space of the hot nozzle is further formed, and the service life of the hot nozzle is prolonged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the assembled structure of the present invention;

FIG. 3 is a schematic view of the construction of the valve needle of the present invention;

fig. 4 is a schematic structural view of the positioning sleeve of the present invention.

In the figure: 1. a mouth body; 2. a gate end; 3. a positioning member; 4. a protrusion; 5. an inner barrel; 6. a hot nozzle runner; 7. a heater; 8. a positioning sleeve; 801. an upper cylinder body; 802. a lower cylinder body; 803. a base; 804. an annular splice; 805. a sealing gasket; 9. a buffer protection pad; 10. a valve needle; 1001. a needle core; 1002. a core cavity; 1003. a needle head; 11. a limiting groove; 12. and (4) a discharge port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The novel corrosion-resistant stainless steel hot nozzle provided by one embodiment of the utility model comprises a nozzle body 1, an inner cylinder 5 is fixedly connected to the inner side of the nozzle body 1, the protection effect is good, a hot nozzle flow channel 6 is arranged on the inner axis of the inner cylinder 5 along the length direction of the inner cylinder 5, the hot nozzle flow channel 6 is used for conveying raw materials, a valve needle 10 is arranged at the lower end of the hot nozzle flow channel 6, the valve needle 10 is used for glue dripping treatment of the hot nozzle when in use, the raw materials are guided into a cavity of a mold, the valve needle 10 is matched at a sprue end 2 at the bottom of the inner cylinder 5 to form the protection effect of the valve needle 10 for positioning and avoiding position deviation, meanwhile, a discharge port 12 penetrating to the lower part is formed at the bottom of the inner side of the sprue end 2, the valve needle 10 guides the raw materials into the discharge port 12 for material injection treatment, and the inner diameter of the discharge port 12 is gradually increased along the end direction of the sprue end 2, the mode is convenient for the electroplating processing of the sprue end 2, the inner wall is smooth after the electroplating, and further the flowing friction force of plastic injection molding is reduced.

Further, in some embodiments, the valve pin 10 is fitted in the position of the limiting groove 11 of the gate tip 2, and the bottom of the limiting groove 11 is connected with the top of the discharge hole 12 in a penetrating manner, when in use, the valve pin 10 is fitted in the limiting groove 11 to form a limiting and protecting effect of the valve pin 10, and the limiting groove 11 is communicated with the discharge hole 12 to realize the injection treatment of the valve pin 10.

Further, in some embodiments, the valve needle 10 includes a core 1001 fixedly connected to the lower end of the hot nozzle runner 6, and a core cavity 1002 provided inside the core 1001 for flowing through of the injection molding material, and a needle 1003 connected to the core cavity 1002 and extending to the discharge port 12 is provided at the bottom of the core 1001, so that in practical use, the needle 1003 extends into the discharge port 12 to directly perform the injection processing of the material, and the material flows through the discharge port 12 to realize the injection molding of the injection molding material on the mold cavity.

Furthermore, in some embodiments, a positioning part 3 is fixedly connected between the mouth body 1 and the inner cylinder 5, a protrusion 4 is arranged at the joint of the top of the inner cylinder 5 and the mouth body 1, the mouth body 1 and the inner cylinder 5 are installed and positioned in an assembly mode through the positioning part 3, the inner cylinder 5 is fixed on the inner side of the mouth body 1, and the protrusion 4 is connected with the top of the mouth body 1 after the fixation, so that the matching connection between the structures is realized.

Further, in some embodiments, a heater 7 for heating and insulating the hot nozzle flow channel 6 is arranged in the nozzle body 1; the heater 7 can realize the heating and heat preservation effects of the injection molding raw materials in the hot nozzle flow channel 6, ensure the smooth circulation of the raw materials and avoid the generation of a gel phenomenon.

In this embodiment, fix inner tube 5 in the inside of chewing body 1 through the mode of setting element 3 during the equipment, the needle 10 adaptation of runner 6 lower extreme is chewed to the heat is on the spacing groove 11 of runner end 2, and the syringe needle 1003 of needle 10 bottom extends to in the discharge gate 12, directly carry out the supply of raw materials, the internal diameter of discharge gate 12 increases along the tip direction of runner end 2 gradually in this scheme, the electroplating process when the design mode of this aperture is conveniently produced, the heat of other structures is chewed relatively, more easily by electroplating process, the inner wall is smooth after the electroplating process, can reduce plastic injection moulding's flow friction during the use, reduce the adhesive layer of plastic in the runner simultaneously, reduce the risk of yellowing.

Example 2

In another embodiment of the utility model, the utility model further comprises a positioning sleeve 8 fixedly connected to the bottom of the inner side of the inner cylinder 5 and used for safely protecting the connection position of the sprue end 2 and the valve needle 10, when the positioning sleeve 8 is used, the safety protection can be performed between the sprue end 2 and the valve needle 10, the stability of the assembled sprue end 2 and the valve needle 10 is ensured, the outer wall of the nozzle body 1 is fixedly connected with a buffer protection pad 9, the pressure-relieving protection function of the nozzle body 1 can be formed, the anti-collision capability of the hot nozzle is enhanced, and the internal components of the hot nozzle are protected, the positioning sleeve 8 comprises a lower cylinder body 802 for limiting the upper part of the sprue end 2, the limiting function of the sprue end 2 is formed, an upper cylinder body 801 which is integrally formed at the upper end of the lower cylinder body 802 and used for limiting and protecting the valve needle 10 is formed, the positioning treatment of the valve needle 10 is formed, and an annular splicing piece 804 for installing the positioning sleeve 8 at the bottom of the inner side of the inner cylinder 5 is fixedly connected to a base 803 of the lower surface of the lower cylinder body 802, the installation of the positioning sleeve 8 is realized, and the joint of the annular splicing piece 804 and the inner cylinder 5 is provided with the sealing washer 805, so that the sealing performance is good, the impurities such as dust and the like are prevented from entering, and the service life of the hot nozzle is further prolonged.

In this affair example, can carry out safety protection to chewing body 1 through the mode of buffering protection pad 9 during the use, reduce the potential safety hazard that the collision produced, and then the security that the heat was chewed, set up seal ring 805 at the junction of annular splice 804 and inner tube 5 simultaneously, seal ring 805 can guarantee the sealing performance of heat bottommost, guarantee the compactness of part junction, and then reduce the circulation of air, prevent the entering of impurity such as dust, moisture, and then the protection of the internal part is chewed to the formation heat.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel heat of corrosion-resistant stainless steel is chewed, includes chewing body (1), its characterized in that: the inner side of the nozzle body (1) is fixedly connected with an inner cylinder (5), the inner axis of the inner cylinder (5) is provided with a hot nozzle flow channel (6) along the length direction of the inner cylinder (5), the lower end of the hot nozzle flow channel (6) is provided with a valve needle (10), the valve needle (10) is matched with a sprue end (2) at the bottom of the inner cylinder (5), the bottom of the inner side of the sprue end (2) is provided with a discharge hole (12) penetrating to the lower part, and the inner diameter of the discharge hole (12) is gradually increased along the end part direction of the sprue end (2);

the sprue gate structure is characterized by further comprising a positioning sleeve (8) fixedly connected to the bottom of the inner side of the inner cylinder (5) and used for carrying out safety protection on the connection position of the sprue gate end (2) and the valve needle (10), and a buffering protection pad (9) is fixedly connected to the outer wall of the sprue body (1).

2. The novel corrosion-resistant stainless steel heat nozzle of claim 1, wherein: the valve needle (10) is matched with the limiting groove (11) of the sprue end head (2), and the bottom of the limiting groove (11) is in through connection with the top of the discharge hole (12).

3. The novel corrosion-resistant stainless steel heat nozzle of claim 1, wherein: the valve needle (10) comprises a needle core (1001) fixedly connected to the lower end of the hot nozzle flow channel (6) and a core cavity (1002) formed inside the needle core (1001), and a needle head (1003) connected with the core cavity (1002) and extending to the discharge hole (12) is arranged at the bottom of the needle core (1001).

4. The novel corrosion-resistant stainless steel heat nozzle of claim 1, wherein: a positioning piece (3) is fixedly connected between the mouth body (1) and the inner cylinder (5), and a bulge (4) is arranged at the joint of the top of the inner cylinder (5) and the mouth body (1).

5. The novel corrosion-resistant stainless steel heat nozzle of claim 1, wherein: a heater (7) for heating and insulating the hot nozzle flow channel (6) is arranged in the nozzle body (1).

6. The novel corrosion-resistant stainless steel heat nozzle of claim 1, wherein: the positioning sleeve (8) comprises a lower barrel (802) for limiting the upper part of the sprue end head (2), an upper barrel (801) for limiting and protecting the valve needle (10) is integrally formed at the upper end of the lower barrel (802), an annular splicing piece (804) for installing the positioning sleeve (8) at the bottom of the inner side of the inner barrel (5) is fixedly connected to a base (803) of the lower surface of the lower barrel (802), and a sealing gasket (805) is arranged at the joint of the annular splicing piece (804) and the inner barrel (5).