Hot runner apparatus with easily removable hot nozzle

Abstract

The utility model discloses a hot runner device of easy disassembly hot nozzle, including second connecting pipe and two first connecting pipes, one end of two first connecting pipes all is fixedly connected with slide cylinder, and the outside of slide cylinder and the second connecting pipe of adjacent position is connected slidingly, be fixed between slide cylinder and second connecting pipe through first bolt component, the bottom fixedly connected with the pipe of first connecting pipe, and the bottom of pipe is sleeved with hot nozzle body, the outside of pipe and hot nozzle body all is fixedly connected with two fixed rings, is equipped with the clamping groove between two fixed rings, the outside of pipe and hot nozzle body junctions is equipped with two first clamping blocks, the utility model not only can be convenient for staff to maintain and replace hot nozzle body, can also be convenient for staff to extend the length of pipeline according to actual demand, still can provide the direction for slide cylinder movement through the cooperation of limiting block and limiting groove.

Description

Technical Field

[0001] This utility model relates to the field of hot nozzle technology, and in particular to a hot runner device for an easily detachable hot nozzle. Background Technology

[0002] Hot runners are heating systems used in injection molds to inject molten plastic particles into the cavity of the mold.

[0003] A search revealed Chinese patent CN217123848U, which discloses an adjustable hot runner nozzle, comprising a manifold, several slides, and several hot nozzles. The manifold has a cavity in the center forming a flow channel, and each hot nozzle's nozzle seat is fixed to an extension. However, this patent still suffers from the following drawbacks: the hot runner device has a relatively complex structure, making nozzle disassembly and replacement very inconvenient. To better address these issues, promote the development of industry technology, and enhance core competitiveness, this application proposes a new structural design that differs from existing technologies. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hot runner device with an easily detachable hot nozzle.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hot runner device for easily detachable hot nozzles includes a second connecting pipe and two first connecting pipes. One end of each of the two first connecting pipes is fixedly connected to a sliding cylinder, which is slidably connected to the outer side of an adjacent second connecting pipe. The sliding cylinder and the second connecting pipe are fixed together by a first pin assembly. A plug tube is fixedly connected to the bottom end of each of the first connecting pipes, and a hot nozzle body is sleeved on the bottom end of the plug tube. Two fixing rings are fixedly connected to the outer sides of both the plug tube and the hot nozzle body, and a slot is provided between the two fixing rings. Two first locking blocks are provided on the outer side of the connection between the plug tube and the hot nozzle body. Two second locking blocks are fixedly connected to the inner walls of each of the two first locking blocks, and the second locking blocks are inserted into the corresponding slots. The two first locking blocks are fixed together by two second pin assemblies.

[0007] As a further embodiment of this utility model, two protrusions are fixedly connected to the fixing ring located above the insertion tube and at the bottom of the hot nozzle body. The inner wall of the first locking block has two grooves, and the protrusions are inserted into the grooves at the corresponding positions.

[0008] As a further embodiment of this invention, a heating wire is fixed inside the second connecting tube.

[0009] As a further embodiment of this utility model, the first pin assembly includes a locking screw, which is threadedly connected to one end of the slide cylinder and is in contact with the outer wall of the second connecting pipe.

[0010] As a further embodiment of this utility model, a limiting groove is formed on the inner wall of the sliding cylinder, a limiting block is fixedly connected to the outer side of the first connecting pipe, and the limiting block is slidably connected to the limiting groove at the corresponding position.

[0011] As a further embodiment of this utility model, the second pin assembly includes a fixing block, which is welded to one side of the first locking block. A lead screw is inserted between two adjacent fixing blocks, and a locking nut is movably connected to one end of the lead screw.

[0012] As a further embodiment of this utility model, a feed pipe is fixedly connected to the top end of the second connecting pipe.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. By removing the restriction of the second pin assembly, the two locking blocks can be quickly separated from the hot nozzle body and the insertion tube, allowing workers to quickly disassemble the hot nozzle body, facilitating the repair and replacement of the hot nozzle body, and improving maintenance efficiency.

[0015] 2. With this utility model, the operator can extend the length of the pipe according to actual needs, and the position of the hot nozzle will also change accordingly. Within the extension range of the pipe, the diverse needs for pipe length and hot nozzle position in different scenarios can be met.

[0016] 3. This utility model provides guidance for the movement of the slide cylinder by using the combination of the limiting block and the limiting groove, ensuring the stability of the slide cylinder's movement direction during pipeline extension, preventing the slide cylinder from rotating, and improving the effectiveness of the device. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of a hot runner device for an easily detachable hot nozzle proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of the first connecting pipe of a hot runner device with an easily detachable hot nozzle proposed in this utility model.

[0019] Figure 3 This is an exploded structural diagram of a hot runner device for an easily detachable hot nozzle proposed in this utility model.

[0020] In the diagram: 1. Feed pipe; 2. Slide cylinder; 3. First connecting pipe; 4. Hot nozzle body; 5. First locking block; 6. Second connecting pipe; 7. Heating wire; 8. Limiting groove; 9. Limiting block; 10. Locking screw; 11. Insert tube; 12. Protrusion; 13. Slot; 14. Fixing ring; 15. Second locking block; 16. Groove; 17. Fixing block; 18. Locking nut; 19. Lead screw. Detailed Implementation

[0021] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Therefore, all other embodiments of this application described herein, and all embodiments obtained by those skilled in the art without creative effort based on the embodiments in this application, should fall within the scope of protection of this application.

[0022] Reference Figures 1-3 A hot runner device for easily detachable hot nozzles includes a second connecting pipe 6 and two first connecting pipes 3. A slide cylinder 2 is welded to one end of each of the two first connecting pipes 3, and the slide cylinder 2 is slidably connected to the outer side of the adjacent second connecting pipe 6. The slide cylinder 2 and the second connecting pipe 6 are fixed by a first pin assembly. The first pin assembly includes a locking screw 10, which is threaded onto one end of the slide cylinder 2 and presses against the outer wall of the second connecting pipe 6. Loosening the locking screw 10 moves the first connecting pipe 3, causing the slide cylinder 2 to move outward along the second connecting pipe 6 until the pipe body is extended. When the required length is reached, the position of the hot nozzle body 4 is changed, and then the locking screw 10 is tightened to make it press against the outer wall of the second connecting pipe 6, so that the moved slide cylinder 2 is fixed to the second connecting pipe 6, thereby realizing the extension of the pipe. The inner wall of the slide cylinder 2 is provided with a limiting groove 8, and the outer side of the first connecting pipe 3 is welded with a limiting block 9, and the limiting block 9 is slidably connected to the limiting groove 8 at the corresponding position. At the same time, the movement of the slide cylinder 2 changes the position of the limiting block 9 in the limiting groove 8, thereby guiding the slide cylinder 2. A heating wire 7 is fixed inside the second connecting pipe 6, which can heat the fluid in the pipe body.

[0023] It should be noted that a tube 11 is welded to the bottom end of the first connecting tube 3, and a hot nozzle body 4 is sleeved on the bottom end of the tube 11. Two fixing rings 14 are welded to the outer sides of both the tube 11 and the hot nozzle body 4, and a groove 13 is provided between the two fixing rings 14. Two protrusions 12 are welded to the fixing rings 14 located above the tube 11 and at the bottom of the hot nozzle body 4. Two first locking blocks 5 are provided on the outer side of the connection between the tube 11 and the hot nozzle body 4. Two second locking blocks 15 are welded to the inner walls of the two first locking blocks 5, and the second locking blocks 15 are inserted into the corresponding grooves 13. Two grooves 16 are formed on the inner wall of the first locking blocks 5, and the protrusions 12 are inserted into the corresponding grooves 16. Through the cooperation of the protrusions 12 and the grooves 16, the positions of the first locking blocks 5 and the second locking blocks 15 are further restricted. To prevent easy rotation, the two first locking blocks 5 are fixed together by two second pin assemblies. The second pin assembly includes a fixing block 17, which is welded to one side of the first locking block 5. A lead screw 19 is inserted between two adjacent fixing blocks 17. One end of the lead screw 19 is threadedly connected to a locking nut 18. When it is necessary to disassemble the hot nozzle body 4, the locking nut 18 is rotated to move the lead screw 19 out, and then the lead screw 19 is separated from the fixing block 17. At this time, the first locking block 5 and the second locking block 15 are no longer restricted. The operator removes the first locking block 5 and the second locking block 15 from the outside of the tube 11 and the hot nozzle body 4. At this time, the second locking block 15 is disengaged from the slot 13, and the protrusion 12 is disengaged from the groove 16. Finally, the hot nozzle body 4 is pulled out from the bottom end of the tube 11, completing the disassembly of the hot nozzle body 4.

[0024] The top end of the second connecting pipe 6 is connected to and fixed with the feed pipe 1. The top end of the feed pipe 1 is welded with a flange. The connection between the slide cylinder 2 and the second connecting pipe 6 is sealed by a sealing gasket.

[0025] Working principle: When it is necessary to extend the pipeline, first loosen the locking screw 10, move the first connecting pipe 3, and make the slide cylinder 2 move outward along the second connecting pipe 6. At the same time, the movement of the slide cylinder 2 changes the position of the limiting block 9 in the limiting groove 8, thereby guiding the slide cylinder 2 until the pipe body is extended to the required length. At the same time, the position of the hot nozzle body 4 is changed. Then tighten the locking screw 10 to make it press against the outer wall of the second connecting pipe 6, so that the moved slide cylinder 2 and the second connecting pipe 6 are fixed, thereby realizing the pipeline extension.

[0026] When it is necessary to disassemble the hot nozzle body 4, turn the locking nut 18 to move it out of the screw 19, and then separate the screw 19 from the fixing block 17. At this time, the first locking block 5 and the second locking block 15 are no longer restricted. The operator removes the first locking block 5 and the second locking block 15 from the outside of the tube 11 and the hot nozzle body 4. At this time, the second locking block 15 disengages from the slot 13, and the protrusion 12 disengages from the groove 16. Finally, the hot nozzle body 4 is pulled out from the bottom of the tube 11 to complete the disassembly of the hot nozzle body 4.

[0027] This utility model has been described through the above embodiments. Those skilled in the art will understand that this utility model is not limited to the above embodiments. Many more modifications can be made based on the teachings of this utility model, and all such modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hot runner device for easily detachable hot nozzles, comprising a second connecting pipe (6) and two first connecting pipes (3), characterized in that, One end of each of the two first connecting tubes (3) is fixedly connected to a slide cylinder (2), and the slide cylinder (2) is slidably connected to the outer side of the adjacent second connecting tube (6). The slide cylinder (2) and the second connecting tube (6) are fixedly connected by a first pin assembly. The bottom end of the first connecting tube (3) is fixedly connected to an insert tube (11), and the bottom end of the insert tube (11) is sleeved with a hot nozzle body (4). The outer sides of the insert tube (11) and the hot nozzle body (4) are fixedly connected to two fixing rings (14), and a slot (13) is provided between the two fixing rings (14). The outer side of the connection between the insert tube (11) and the hot nozzle body (4) is provided with two first locking blocks (5). The inner walls of the two first locking blocks (5) are fixedly connected to two second locking blocks (15), and the second locking blocks (15) are inserted into the corresponding slots (13). The two first locking blocks (5) are fixedly connected by two second pin assemblies.

2. The hot runner device for easy-to-disassemble hot nozzles according to claim 1, characterized in that, Two protrusions (12) are fixedly connected to the fixing ring (14) located above the insertion tube (11) and at the bottom of the hot nozzle body (4). Two grooves (16) are opened on the inner wall of the first locking block (5), and the protrusions (12) are inserted into the grooves (16) at the corresponding positions.

3. The hot runner device for easy-to-disassemble hot nozzles according to claim 1, characterized in that, A heating wire (7) is fixed inside the second connecting tube (6).

4. The hot runner device for easy-to-disassemble hot nozzles according to claim 1, characterized in that, The first pin assembly includes a locking screw (10), which is threaded to one end of the slide (2) and is in contact with the outer wall of the second connecting pipe (6).

5. A hot runner device for easily detachable hot nozzles according to claim 4, characterized in that, The inner wall of the slide cylinder (2) is provided with a limiting groove (8), and the outer side of the first connecting pipe (3) is fixedly connected with a limiting block (9), and the limiting block (9) is slidably connected to the limiting groove (8) at the corresponding position.

6. A hot runner device for easily detachable hot nozzles according to claim 1, characterized in that, The second pin assembly includes a fixing block (17), which is welded to one side of the first locking block (5). A lead screw (19) is inserted between two adjacent fixing blocks (17), and a locking nut (18) is movably connected to one end of the lead screw (19).

7. A hot runner device for easily detachable hot nozzles according to claim 1, characterized in that, The top end of the second connecting pipe (6) is connected to and fixed with a feed pipe (1).

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