Anti-blocking nozzle for hot runner

Abstract

The utility model relates to the technical field of nozzles, in particular to an anti-blocking nozzle for a hot runner. Comprising a nozzle body, a sleeve is assembled on the outer side of the nozzle body, connecting rings are arranged at the two ends of the sleeve, first annular plates are fixed to the two ends of the sleeve, second annular plates are fixed to the ends, close to the sleeve, of the connecting rings, the second annular plates are in threaded connection with the first annular plates, and positioning balls are evenly distributed in the ends, close to the sleeve, of the first annular plates; an annular positioning groove is formed in the position, corresponding to the positioning ball, of the outer side of the nozzle body. According to the hot runner anti-blocking nozzle provided by the utility model, the nozzle body, the sleeve and the connecting ring are matched, so that the sleeve and the connecting ring can be assembled on the outer side of the nozzle body in a sliding manner, and the connecting ring rotates at the two ends of the sleeve, so that the positioning ball enters the annular positioning groove after being extruded; therefore, the sleeve and the nozzle body can be quickly assembled or disassembled.

Description

Technical Field

[0001] This utility model relates to the field of nozzle technology, and in particular to a hot runner anti-clogging nozzle. Background Technology

[0002] Hot runner systems are heating components used in injection molds to inject molten plastic particles into the mold cavity. Hot runner molds are a novel construction that heats the runners and sprues of traditional or three-plate molds, eliminating the need to remove them after each molding cycle. Hot runners maintain the molten plastic in the runners and gates through heating. Nozzles are an important component of hot runner systems.

[0003] Patent document CN220242237U discloses an anti-clogging nozzle for hot runners, including a nozzle head with a mounting thread fixedly installed on it. A nozzle orifice is formed at the end of the nozzle head away from the mounting thread, and a heat-conducting groove is formed around the nozzle orifice. A heat-conducting plate is fixedly installed inside the heat-conducting groove. The advantage of this invention is that when the device is in use, the nozzle head is installed in the position using the mounting thread. Then, the electric heating column on the mounting ring inside the heating groove and heating chamber is activated. The electric heating column heats the nozzle head, causing the internal temperature to rise. This temperature rise keeps the injection molding material inside the nozzle head in a liquid state. The heat is conducted through the heat-conducting plate, maintaining a high temperature at the nozzle orifice. This keeps the nozzle head at a high temperature, keeping the injection molding material in a liquid state and preventing nozzle clogging.

[0004] When using the above technology, the following technical problems were found in the existing technology: the existing anti-clogging nozzle is not convenient to be quickly disassembled as needed during use. Therefore, a hot runner anti-clogging nozzle is designed to provide another technical solution to the above technical problems. Utility Model Content

[0005] Therefore, it is necessary to provide a hot runner anti-clogging nozzle to address the above-mentioned technical problems, thereby solving the technical problem that existing anti-clogging nozzles are not convenient to be quickly disassembled as needed during use.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A hot runner anti-clogging nozzle includes a nozzle body, a sleeve mounted on the outer side of the nozzle body, connecting rings at both ends of the sleeve, a first annular plate fixed at both ends of the sleeve, a second annular plate fixed at the end of the connecting ring near the sleeve, the second annular plate being threadedly connected to the first annular plate, positioning beads evenly distributed inside the first annular plate near the sleeve, and an annular positioning groove opened on the outer side of the nozzle body at a position corresponding to the positioning beads.

[0008] As a preferred embodiment of the hot runner anti-clogging nozzle provided by this utility model, the nozzle body has a flow channel inside.

[0009] In a preferred embodiment of the hot runner anti-clogging nozzle provided by this utility model, the inner diameter of the first annular plate is the same as the inner diameter of both ends of the sleeve, the outer diameter of the first annular plate is smaller than the outer diameter of the sleeve, the outer diameter of the second annular plate is the same as the outer diameter of the connecting ring, and the inner diameter of the second annular plate is smaller than the inner diameter of the connecting ring.

[0010] In a preferred embodiment of the hot runner anti-clogging nozzle provided by this utility model, a placement cavity is provided on the inner side of the sleeve, and a heating wire is fixed on the inner side of the placement cavity.

[0011] In a preferred embodiment of the hot runner anti-clogging nozzle provided by this utility model, a threaded groove is provided on the outer side of the first annular plate away from the sleeve, and the second annular plate is threadedly connected to the first annular plate through the threaded groove.

[0012] In a preferred embodiment of the hot runner anti-clogging nozzle provided by this utility model, an adjustment cavity is provided inside the first annular plate at a position corresponding to the positioning bead. The adjustment cavity consists of an adjustment groove and an anti-detachment groove, and the top and bottom of the adjustment groove are connected to the anti-detachment groove.

[0013] In a preferred embodiment of the hot runner anti-clogging nozzle provided by this utility model, the adjusting groove is cylindrical and the anti-detachment groove is arc-shaped.

[0014] In a preferred embodiment of the hot runner anti-clogging nozzle provided by this utility model, the outer side of the first annular plate away from the sleeve is provided with limit grooves, the inner side of the second annular plate is provided with an annular displacement groove, the inner side of the annular displacement groove is provided with limit plates slidably connected, and the bottom end of the limit plate is slidably connected to the limit groove.

[0015] In a preferred embodiment of the hot runner anti-clogging nozzle provided by this utility model, the distance of the limiting groove near the end of the sleeve is greater than the distance of the center of the adjusting cavity near the sleeve.

[0016] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0017] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects:

[0018] This utility model provides a hot runner anti-clogging nozzle. Through the cooperation of the nozzle body, sleeve and connecting ring, the sleeve and connecting ring can be slidably assembled on the outside of the nozzle body. By rotating the connecting ring at both ends of the sleeve, the positioning bead is squeezed and enters the annular positioning groove, thereby enabling quick assembly or disassembly between the sleeve and the nozzle body.

[0019] Through the cooperation of the positioning beads, the adjusting groove and the anti-detachment groove, when the connecting ring drives the second annular plate to slide on the outside of the first annular plate, the movement of the second annular plate can squeeze the top of the positioning beads, so that multiple positioning beads move closer to each other at the same time, and then the bottom of the positioning beads enters the inner side of the annular positioning groove through the anti-detachment groove at the bottom.

[0020] By cooperating with the limiting groove, the annular displacement groove and the limiting plate, the connecting ring can drive the second annular plate to rotate, so that the limiting plate slides inside the annular displacement groove, thereby adjusting the displacement of the limiting plate inside the limiting groove and preventing the connecting ring from detaching from the sleeve. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a partial view of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the sleeve of this utility model;

[0025] Figure 4 This is a schematic diagram of the heating wire of this utility model;

[0026] Figure 5 This is a cross-sectional view of the first annular plate of this utility model;

[0027] Figure 6 This is a schematic diagram of the connecting ring of this utility model.

[0028] In the diagram: 1. Nozzle body; 2. Flow channel; 3. Annular positioning groove; 4. Sleeve; 5. Connecting ring; 6. First annular plate; 7. Heating wire; 8. Positioning bead; 9. Threaded groove; 10. Limiting groove; 11. Adjusting groove; 12. Anti-detachment groove; 13. Second annular plate; 14. Annular displacement groove; 15. Limiting plate; 16. Placement cavity. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] Reference Figures 1-6 A hot runner anti-clogging nozzle includes a nozzle body 1. The nozzle body 1 has a flow channel 2 inside, which allows heated liquid injection molding material to enter the flow channel 2 inside the nozzle body 1 and be ejected through the nozzle body 1. A sleeve 4 is fitted on the outside of the nozzle body 1, which can be slidably fitted on the outside of the nozzle body 1. The nozzle body 1 can be fixed by fixing the sleeve 4 to prevent damage to the nozzle body 1. At the same time, the sleeve 4 can be separated from the nozzle body 1 during maintenance.

[0034] Both ends of the sleeve 4 are provided with connecting rings 5, which allows the sleeve 4 and the connecting rings 5 ​​to move as a whole, so that the sleeve 4 and the connecting rings 5 ​​are simultaneously assembled on the outside of the nozzle body 1, and the connecting rings 5 ​​can rotate and translate on the outside of the nozzle body 1 by sliding. Both ends of the sleeve 4 are fixed with first annular plates 6, and the inner diameter of the first annular plate 6 is the same as the inner diameter of both ends of the sleeve 4, and the thickness of the first annular plate 6 is less than the thickness of the sleeve 4, which allows the outer diameter of the first annular plate 6 to be less than the outer diameter of the sleeve 4, and allows the sleeve 4 and the first annular plate 6 to move as a whole.

[0035] A second annular plate 13 is fixed to one end of the connecting ring 5 near the sleeve 4. The outer diameter of the second annular plate 13 is the same as the outer diameter of the connecting ring 5, and the inner diameter of the second annular plate 13 is smaller than the inner diameter of the connecting ring 5, so that the second annular plate 13 and the connecting ring 5 can move together. The second annular plate 13 is threadedly connected to the first annular plate 6, so that the connecting ring 5 can rotate outside the nozzle body 1, driving the second annular plate 13 to rotate and move outside the first annular plate 6 through the threaded connection with the first annular plate 6.

[0036] Preferably, a heating wire 7 is provided on the inner side of the sleeve 4, so that when the heating wire 7 is working, it can heat the injection molding liquid inside the nozzle body 1 by heating, thereby allowing the injection molding material to continue to liquefy. A placement cavity 16 is provided on the inner side of the sleeve 4, and the heating wire 7 is fixed on the inner side of the placement cavity 16. At the same time, the inner side of the heating wire 7 can come into contact with the outer side of the nozzle body 1, thereby allowing the heating wire 7 to efficiently heat the nozzle body 1.

[0037] Positioning beads 8 are evenly distributed inside the first annular plate 6 near the sleeve 4, so that the positioning beads 8 can be adjusted up and down inside the first annular plate 6. An annular positioning groove 3 is opened on the outer side of the nozzle body 1 and at the position corresponding to the positioning beads 8, so that when the sleeve 4 is located outside the nozzle body 1, and the positioning beads 8 are located inside the annular positioning groove 3, the sleeve 4 cannot be disengaged by translation on the outer side of the nozzle body 1. A threaded groove 9 is opened on the outer side of the first annular plate 6 away from the sleeve 4. The second annular plate 13 is threadedly connected to the first annular plate 6 through the threaded groove 9, which can facilitate the adjustment of the position of the second annular plate 13 outside the first annular plate 6 and increase the stability effect.

[0038] Preferably, an adjustment cavity is provided inside the first annular plate 6 at a position corresponding to the positioning bead 8, so that the positioning bead 8 can slide up and down inside the adjustment cavity due to external pressure. The adjustment cavity consists of an adjustment groove 11 and an anti-detachment groove 12. The adjustment groove 11 is cylindrical, and the top and bottom of the adjustment groove 11 are connected to the anti-detachment groove 12. The anti-detachment groove 12 is arc-shaped, so that the positioning bead 8 can move up and down inside the adjustment groove 11. The anti-detachment groove 12 at the top or bottom restricts the positioning bead 8 from detaching from the first annular plate 6.

[0039] In other embodiments, the anti-detachment groove 12 may also be truncated cone or the like.

[0040] Limiting grooves 10 are evenly distributed on the outer side of the first annular plate 6 away from the sleeve 4, and the distance of the limiting grooves 10 from the sleeve 4 is greater than the distance of the center of the adjusting cavity from the sleeve 4. An annular displacement groove 14 is provided on the inner side of the second annular plate 13. Limiting plates 15 are evenly distributed and slidably connected on the inner side of the annular displacement groove 14. The limiting plates 15 are T-shaped to prevent them from detaching from the second annular plate 13. The bottom end of the limiting plate 15 is slidably connected to the limiting groove 10, so that the annular displacement groove 14 will not contact the top of the positioning bead 8, and thus will not affect the squeezing effect of the second annular plate 13 on the top of the positioning bead 8.

[0041] In this embodiment, the nozzle body 1 is made of a heat-conducting material, such as stainless steel, while the sleeve 4 can be made of a heat-insulating material.

[0042] In other embodiments, when it is necessary to prevent the nozzle body 1 from rotating inside the sleeve 4, an anti-rotation block can be fixed inside one of the first annular plates 6 at a position that intersects with the positioning bead 8, so that the anti-rotation block slides with the outside of the nozzle body 1, thereby restricting the sleeve 4 from rotating outside the nozzle body 1.

[0043] The usage process of the hot runner anti-clogging nozzle provided by this utility model is as follows: In use, firstly, the sleeve 4 and connecting ring 5 are slidably assembled onto the outside of the nozzle body 1. Due to their own weight, some of the positioning beads 8 descend into the inner side of the annular positioning groove 3 inside the adjusting cavity of the first annular plate 6. Then, by rotating the connecting ring 5, the rotation of the connecting ring 5 drives the second annular plate 13 to rotate synchronously. The rotation of the second annular plate 13, through its threaded connection with the first annular plate 6, allows the second annular plate 13 to move towards the sleeve 4 on the outside of the first annular plate 6. Simultaneously, the sliding of the limiting plate 15 and the annular displacement groove 14 allows the limiting plate 15 to... 5. While sliding inside the annular displacement groove 14, it moves towards the sleeve 4 inside the limiting groove 10. When the movement of the second annular plate 13 presses the top of the positioning bead 8, the positioning bead 8 is pressed down from the inside of the top anti-detachment groove 12 and enters the inside of the bottom anti-detachment groove 12 through the adjusting groove 11. At the same time, the bottom of the positioning bead 8 enters the inside of the annular positioning groove 3. At this time, it prevents the sleeve 4 and the connecting ring 5 from detaching from the nozzle body 1 by translation and sliding. During operation, the position of the nozzle body 1 is positioned by the clamping sleeve 4. And through the operation of the heating wire 7, the injection material in the flow channel 2 on the nozzle body 1 is continuously liquefied through heat conduction.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hot runner anti-clogging nozzle, comprising a nozzle body (1), characterized in that, A sleeve (4) is fitted on the outside of the nozzle body (1). A connecting ring (5) is provided at both ends of the sleeve (4). A first annular plate (6) is fixed at both ends of the sleeve (4). A second annular plate (13) is fixed at the end of the connecting ring (5) near the sleeve (4). The second annular plate (13) is threadedly connected to the first annular plate (6). Positioning beads (8) are evenly distributed inside the first annular plate (6) near the end of the sleeve (4). An annular positioning groove (3) is opened on the outside of the nozzle body (1) at the position corresponding to the positioning bead (8).

2. The hot runner anti-clogging nozzle according to claim 1, characterized in that, The nozzle body (1) has a flow channel (2) inside.

3. The hot runner anti-clogging nozzle according to claim 1, characterized in that, The inner diameter of the first annular plate (6) is the same as the inner diameter of both ends of the sleeve (4). The outer diameter of the first annular plate (6) is smaller than the outer diameter of the sleeve (4). The outer diameter of the second annular plate (13) is the same as the outer diameter of the connecting ring (5). The inner diameter of the second annular plate (13) is smaller than the inner diameter of the connecting ring (5).

4. A hot runner anti-clogging nozzle according to claim 1, characterized in that, The sleeve (4) has a placement cavity (16) on its inner side, and a heating wire (7) is fixed on the inner side of the placement cavity (16).

5. A hot runner anti-clogging nozzle according to claim 1, characterized in that, The first annular plate (6) has a threaded groove (9) on the outer side of the end away from the sleeve (4), and the second annular plate (13) is threadedly connected to the first annular plate (6) through the threaded groove (9).

6. A hot runner anti-clogging nozzle according to claim 1, characterized in that, An adjustment cavity is provided inside the first annular plate (6) at a position corresponding to the positioning bead (8). The adjustment cavity consists of an adjustment groove (11) and an anti-detachment groove (12). The top and bottom of the adjustment groove (11) are connected to the anti-detachment groove (12).

7. A hot runner anti-clogging nozzle according to claim 6, characterized in that, The adjustment groove (11) is cylindrical, and the anti-detachment groove (12) is arc-shaped.

8. A hot runner anti-clogging nozzle according to claim 6, characterized in that, The first annular plate (6) has a limiting groove (10) evenly distributed on the outer side of the end away from the sleeve (4), and the second annular plate (13) has an annular displacement groove (14) evenly distributed on the inner side. The limiting plate (15) is evenly distributed and slidably connected on the inner side of the annular displacement groove (14), and the bottom end of the limiting plate (15) is slidably connected to the limiting groove (10).

9. A hot runner anti-clogging nozzle according to claim 8, characterized in that, The distance of the limiting groove (10) near the end of the sleeve (4) is greater than the distance of the center of the adjusting cavity near the sleeve (4).

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