Anti-blocking nozzle of hot runner

Abstract

An injection nozzle is arranged in the middle of the top side of a splitter plate and fixedly connected with an input port of the top side of the splitter plate, hot nozzles are symmetrically arranged at the bottom of the splitter plate and fixedly connected with an output port of the splitter plate, and mounting sleeves are connected to the outer walls of the hot nozzles in a sleeved mode. The inside of the hot nozzle is sequentially heated from top to bottom, the efficiency of softening blocking materials in the hot nozzle is improved, the blocking materials blocking the inside of a spraying hole in the bottom end of the hot nozzle can be automatically adhered and pulled out along with soft replacement of the installation sleeve and a descending sealing ring, and therefore the blocking materials in the spraying hole in the bottom end of the hot nozzle can be automatically heated. The annular heat conduction pipe can conduct auxiliary heating on the space below the hot nozzle, the situation that when the softened blocking material is pulled out, the blocking material is broken and taken out again due to secondary solidification caused by the fact that the blocking material makes contact with the external low-temperature environment is avoided, and discharging of the blocking material is smoother and more stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of anti -blocking nozzle, specifically, relate to a hot runner anti -blocking nozzle. BACKGROUND

[0002] Hot runner is used in injection mold, it is the heating assembly system that melts the plastic particle is injected to the cavity of mold. Because the heating rod and heating ring are arranged near or in the center of the runner, the whole runner from the nozzle outlet of injection molding machine to the sprue is in high temperature state, so that the plastic in the runner keeps melting, generally no need to open the runner to take out the condensed material after shutdown, only need to heat the runner to the required temperature when starting again.

[0003] In the prior art, the application number 202322013660.0 discloses a kind of hot runner anti -blocking nozzle, it discloses that installation screw thread is fixedly installed on nozzle head, nozzle mouth is opened in the end of nozzle head away from installation screw thread, heat conduction groove is opened in the periphery of nozzle mouth, heat conduction sheet is fixedly installed in the inside of heat conduction groove.The above-mentioned device is heated by external structure to nozzle, and the operation of softening and taking out of blocking material is completed, the heating softening structure is not convenient to remove, cannot be softened and treated in response to the length of the cavity of nozzle, and the outer wall of the spray hole at the bottom end of nozzle is most prone to produce blocking material, material contact air can occur secondary solidification during the process of taking out blocking material, the efficiency of removing blocking material is greatly reduced. UTILITY MODEL CONTENT

[0004] In view of the problems in the related art, the utility model provides a kind of hot runner anti -blocking nozzle to overcome the above-mentioned technical problems existing in the prior art.

[0005] Therefore, the specific technical scheme adopted by the utility model is as follows: a kind of hot runner anti -blocking nozzle, including injection nozzle, shunt plate, hot nozzle, the injection nozzle is set in the middle part of shunt plate top side, and is connected and fixed with the input port of shunt plate top side, the hot nozzle is symmetrically set in the bottom of shunt plate, and is connected and fixed with the output port of shunt plate, the installation sleeve pipe is connected to the outer wall of hot nozzle and is set, the installation sleeve pipe bottom end is connected with auxiliary heating sleeve.

[0006] As further optimization, the installation sleeve pipe includes fixed ring, internal thread ring, external thread pipe, the top end of the external thread pipe is fixedly connected with the fixed ring, the outer wall of the external thread pipe is matched with the internal thread ring and is connected by screw thread, the bottom end of the internal thread ring is fixedly connected with the connection sleeve pipe.

[0007] As further optimization, the connection sleeve pipe inner wall middle part is embedded and fixed with electric heating film, and the connection sleeve pipe is movably connected with the outer wall of the external thread pipe.

[0008] As a further optimization, the auxiliary heating sleeve comprises a convex table, a heat conduction pipe, the heat conduction pipe is equidistantly arranged on the top side edge of the convex table, a circular hole groove is arranged in the middle of the top side of the convex table, and a sealing ring is fixedly arranged on the inner wall of the bottom side of the circular hole groove.

[0009] As a further optimization, the circular hole groove is movably arranged on the outer wall of the bottom end of the hot nozzle, the hot nozzle is movably arranged in the inner wall of the circular hole groove, and the sealing ring is movably arranged on the inner wall of the nozzle hole of the bottom end of the hot nozzle.

[0010] As a further optimization, the top end of the heat conduction pipe is fixedly connected with a connecting ring, a circular flow guide through hole is arranged through the connecting ring in the up-down direction, a connecting mesh plate is movably arranged on the inner wall of the circular flow guide through hole in the up-down direction, and the wall cavity of the connecting sleeve and the inner cavity of the heat conduction pipe are fixedly connected with the inside of the circular flow guide through hole.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the inside of the hot nozzle is heated from top to bottom, the efficiency of softening the blocked material in the hot nozzle is improved, the blocked material in the nozzle hole of the bottom end of the hot nozzle can be automatically adhered and pulled out with the softening of the sleeve and the descending sealing ring, the annular heat conduction pipe can assist in heating the space below the hot nozzle, the secondary solidification of the softened blocked material caused by contact with the external low-temperature environment is avoided, the situation that the blocked material is broken and taken out again is avoided, the discharge of the blocked material is more smooth and stable. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.

[0013] Fig. 1 It is a total structure schematic view of the utility model;

[0014] Fig. 2 It is a split structure schematic view of the installation sleeve of the utility model;

[0015] Fig. 3 It is a split structure schematic view of the auxiliary heating sleeve of the utility model.

[0016] In the drawing: 1, injection nozzle;2, flow distribution plate;3, hot nozzle;4, installation sleeve;5, auxiliary heating sleeve;6, fixed ring;7, internal thread ring;8, external thread pipe;9, connecting sleeve;10, electric heating film;11, convex table;12, heat conduction pipe;13, circular hole groove;14, sealing ring;15, connecting ring;16, circular flow guide through hole;17, connecting mesh plate. DETAILED DESCRIPTION

[0017] To further illustrate the embodiments, the utility model provides with the drawings, these drawings are part of the utility model disclosure, it mainly used to illustrate the embodiment, and can cooperate the relevant description of the specification to explain the operation principle of the embodiment, cooperate with reference to these contents, the person skilled in the art should be able to understand other possible implementation ways and the advantages of the utility model, the components in the drawing are not drawn according to scale, and similar component symbols are usually used to represent similar components.

[0018] Embodiment one

[0019] As Figs. 1 to 3 shown, a hot runner anti-blocking nozzle, including injection nozzle 1, shunt plate 2, hot nozzle 3, injection nozzle 1 is set in the middle of the top side of shunt plate 2, and is connected and fixed with the input port of the top side of shunt plate 2, hot nozzle 3 is symmetrically arranged at the bottom of shunt plate 2, and is connected and fixed with the output port of shunt plate 2, the mounting sleeve 4 is sleeved on the outer wall of hot nozzle 3, the mounting sleeve 4 bottom end is connected with the auxiliary heating sleeve 5, the mounting sleeve 4 includes fixed ring 6, internal thread ring 7, external thread pipe 8, the top end of external thread pipe 8 is fixedly connected with fixed ring 6, the outer wall of external thread pipe 8 is matched with internal thread ring 7 and is connected by screw thread, the bottom end of internal thread ring 7 is fixedly connected with connecting sleeve 9, the electric heating film 10 is embedded and fixed in the inner wall of connecting sleeve 9, and the electric heating film 10 on the inner wall of connecting sleeve 9 can assist heating the outer wall of hot nozzle 3, avoid the flow passage inside hot nozzle 3 from solidification due to temperature is too low, and connecting sleeve 9 is lifted by screwing internal thread ring 7, so that it can be adjusted on the outer wall of external thread pipe 8, can heat the inside of hot nozzle 3 from top to bottom in the process of cleaning the blocked material, improve the efficiency of softening the blocked material inside hot nozzle 3.

[0020] Embodiment two

[0021] As Figs. 1 to 3As shown, a hot runner anti-blocking nozzle, including injection nozzle 1, distribution plate 2, hot nozzle 3, injection nozzle 1 is arranged in the middle of the top side of the distribution plate 2, and is connected and fixed with the input port of the top side of the distribution plate 2, the hot nozzle 3 is symmetrically arranged at the bottom of the distribution plate 2, and is connected and fixed with the output port of the distribution plate 2, the mounting sleeve 4 is sleeved and connected on the outer wall of the hot nozzle 3, the auxiliary heating sleeve 5 is connected at the bottom end of the mounting sleeve 4, the auxiliary heating sleeve 5 comprises a convex table 11 and a heat pipe 12, the heat pipe 12 is equidistantly arranged at the top side edge of the convex table 11, a circular hole groove 13 is formed in the middle of the top side of the convex table 11, a sealing ring 14 is fixedly arranged on the inner wall of the circular hole groove 13, the mounting sleeve 4 is movably sleeved on the outer wall of the bottom end of the hot nozzle 3, the hot nozzle 3 is movably embedded in the inner wall of the circular hole groove 13, and the sealing ring 14 is movably embedded on the inner wall of the nozzle hole at the bottom end of the hot nozzle 3, the heat pipe 12 is fixedly connected with the connecting ring 15 at the top end, the circular flow guide through hole 16 is formed in the connecting ring 15, the connecting net plate 17 is embedded and fixed on the inner wall of the circular flow guide through hole 16, the wall cavity of the connecting sleeve 9 and the inner cavity of the heat pipe 12 are fixedly connected with the inside of the circular flow guide through hole 16, the hot nozzle 3 is movably embedded in the inner wall of the circular hole groove 13, and the sealing ring 14 is movably embedded on the inner wall of the nozzle hole at the bottom end of the hot nozzle 3, when the inner thread ring 7 is screwed down, the connecting ring 15, the convex table 11 and the heat pipe 12 are lowered, the blocking material blocked in the nozzle hole at the bottom end of the hot nozzle 3 can be automatically adhered and pulled out by the soft change of the mounting sleeve 4 and the lowering of the sealing ring 14, and the heat generated by the electric heating film 10 can be transmitted to the inner cavity of the heat pipe 12 through the circular flow guide through hole 16, the annular heat pipe 12 can assist in heating the space below the hot nozzle 3, so that the softened blocking material is not contacted with the external low-temperature environment to avoid secondary solidification and cause the blocking material to be broken and taken out again, and the discharge of the blocking material is more smooth and stable.

[0022] In conclusion, in the utility model, the electric heating film 10 on the inner wall of the connecting sleeve 9 can assist in heating the outer wall of the hot nozzle 3, so that the flow channel in the hot nozzle 3 is not solidified due to too low temperature, the connecting sleeve 9 is adjusted up and down on the outer wall of the outer thread pipe 8 through the inner thread ring 7, so that the hot nozzle 3 inside can be heated from top to bottom during the process of cleaning the blocking material, the hot nozzle 3 is movably embedded in the inner wall of the circular hole groove 13, and the sealing ring 14 is movably embedded on the inner wall of the nozzle hole at the bottom end of the hot nozzle 3, when the inner thread ring 7 is screwed down, the connecting ring 15, the convex table 11 and the heat pipe 12 are lowered, the blocking material blocked in the nozzle hole at the bottom end of the hot nozzle 3 can be automatically adhered and pulled out by the soft change of the mounting sleeve 4 and the lowering of the sealing ring 14, and the heat generated by the electric heating film 10 can be transmitted to the inner cavity of the heat pipe 12 through the circular flow guide through hole 16, the annular heat pipe 12 can assist in heating the space below the hot nozzle 3, so that the softened blocking material is not contacted with the external low-temperature environment to avoid secondary solidification and cause the blocking material to be broken and taken out again, and the discharge of the blocking material is more smooth and stable.

[0023] The above merely preferred embodiments of the present application are not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hot runner anti-clogging nozzle, comprising an injection nozzle (1), a flow divider (2), and a hot nozzle (3), characterized in that, The injection nozzle (1) is located in the middle of the top side of the flow divider (2) and is connected and fixed to the input port of the top side of the flow divider (2). The hot nozzle (3) is symmetrically arranged at the bottom of the flow divider (2) and is connected and fixed to the output port of the flow divider (2). An installation sleeve (4) is sleeved on the outer wall of the hot nozzle (3), and an auxiliary heating sleeve (5) is connected to the bottom end of the installation sleeve (4).

2. The hot runner anti-clogging nozzle according to claim 1, characterized in that, The mounting sleeve (4) includes a fixing ring (6), an internal threaded ring (7), and an external threaded tube (8). The top end of the external threaded tube (8) is fixedly connected to the fixing ring (6), and the outer wall of the external threaded tube (8) is threadedly connected to the internal threaded ring (7). The bottom end of the internal threaded ring (7) is fixedly connected to the connecting sleeve (9).

3. A hot runner anti-clogging nozzle according to claim 2, characterized in that, An electric heating film (10) is embedded and fixed in the middle of the inner wall of the connecting sleeve (9), and the connecting sleeve (9) is movably connected to the outer wall of the external threaded pipe (8).

4. A hot runner anti-clogging nozzle according to claim 2, characterized in that, The auxiliary heating jacket (5) includes a convex platform (11) and a heat-conducting pipe (12). The heat-conducting pipe (12) is equidistantly arranged on the top edge of the convex platform (11). A circular groove (13) is dug in the middle of the top side of the convex platform (11). A sealing ring (14) is fixed through the bottom side of the inner wall of the circular groove (13).

5. A hot runner anti-clogging nozzle according to claim 4, characterized in that, The circular groove (13) is movably sleeved on the outer wall of the bottom end of the hot nozzle (3), the hot nozzle (3) is movably embedded in the inner wall of the circular groove (13), and the sealing ring (14) is movably embedded in the inner wall of the nozzle hole at the bottom end of the hot nozzle (3).

6. A hot runner anti-clogging nozzle according to claim 4 or 5, characterized in that, The top end of the heat pipe (12) is fixedly connected to a connecting ring (15), and the connecting ring (15) is provided with a circular flow port (16) running through it from top to bottom. The inner wall of the circular flow port (16) is respectively embedded with a connecting mesh plate (17). The wall cavity of the connecting sleeve (9) and the inner cavity of the heat pipe (12) are respectively connected to the inside of the circular flow port (16).

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