Hot runner system of plastic mold

Abstract

The utility model relates to the field of plastic mould manufacturing, in particular to a hot runner system of a plastic mould, which comprises a pipeline, a pipe fitting is connected to the interior of the pipeline, and a nozzle is fixed to one end of the pipe fitting; an internal thread is arranged on the inner wall of the pipeline, and an external thread is arranged on the outer wall of the pipe fitting; the pipe fitting is connected into the pipeline through matching of the external thread and the internal thread; a ring body is fixed at one end of the nozzle, a connecting ring is arranged on the outer wall of the ring body, and an auxiliary rotating strip is fixed on the outer wall of the connecting ring, so that the nozzle is more convenient to disassemble by changing the connecting mode of the nozzle and the pipeline, and the nozzle is convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the field of plastic mold manufacturing, in particular to a hot runner system of a plastic mold. Background Art

[0002] In the plastic mold manufacturing process, the hot runner system is a key component that is responsible for transporting the molten plastic material from the injection molding machine to the various cavities of the mold.

[0003] Traditional hot runner systems usually include nozzles, pipes and other components, but the connection between the pipes and the nozzles is relatively complicated, making it difficult to disassemble and maintain the nozzles.

[0004] Therefore, a hot runner system for a plastic mold is proposed. Utility Model Content

[0005] The utility model aims to provide a hot runner system for a plastic mold.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hot runner system for a plastic mold, comprising:

[0008] pipeline;

[0009] The interior of the pipeline is connected with a pipe fitting, and one end of the pipe fitting is fixed with a nozzle;

[0010] The inner wall of the pipe is provided with an internal thread, and the outer wall of the pipe fitting is provided with an external thread;

[0011] The pipe fitting is connected to the inside of the pipeline through external threads and internal threads;

[0012] A ring body is fixed at one end of the nozzle, a connecting ring is arranged on the outer wall of the ring body, and an auxiliary rotating strip is fixed on the outer wall of the connecting ring.

[0013] Preferably, a first clamping hole is provided on the outer wall of the connecting ring, and a second clamping hole is provided on the outer wall of the ring body;

[0014] The first clamping hole and the second clamping hole are clamped in the fixing pin.

[0015] Preferably, an auxiliary plate is fixed to one end of the fixing pin, and a pull rod is fixed to one end of the auxiliary plate.

[0016] Preferably, a compression spring is provided on the outer wall of the fixing pin, one end of the compression spring is fixed to the auxiliary plate, and the other end of the compression spring is fixed to the connecting ring.

[0017] Preferably, two protective members are provided on the outer wall of the pipeline, and connecting ears are fixed on the outer walls of the two protective members. The two protective members are connected to the outer wall of the pipeline through the connecting ears and fixing bolts.

[0018] Preferably, the protective member is composed of a heating layer and a heat-insulating layer from the inside to the outside;

[0019] An electric heating wire is installed inside the heating layer;

[0020] The electric heating wire is electrically connected to an external controller and a power source.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] Since the pipe fitting is connected to the inside of the pipeline by means of external threads and internal threads, when the pipe fitting is disassembled, it is only necessary to rotate the nozzle and the pipe fitting in the opposite direction of the threaded connection direction of the external threads and the internal threads to disassemble the nozzle. Compared with the existing ones, the utility model makes it more convenient to disassemble the nozzle by changing the connection method of the nozzle and the pipeline, thereby facilitating the maintenance of the nozzle.

[0023] The utility model places the connecting ring on the outer wall of the ring body. At this time, the fixing pin is driven to be clamped into the first clamping hole and the second clamping hole under the elastic force of the compression spring, so that the connecting ring can be fixed to the outer wall of the ring body. Since the auxiliary rotating strip is fixed on the outer wall of the connecting ring, when the nozzle and the pipe fitting are difficult to rotate, the staff can use the auxiliary rotating strip to rotate the nozzle and the pipe fitting, which further facilitates the disassembly and maintenance of the nozzle.

[0024] When the connecting ring and the auxiliary turning strip are to be disassembled, the fixing pin is pulled by the pull rod, and the compression spring will perform a corresponding stretching movement. After one end of the fixing pin is disengaged from the second clamping hole, the connecting ring and the auxiliary turning strip can be disassembled. Therefore, when the nozzle is working, the connecting ring and the auxiliary turning strip can be disassembled, thereby preventing the connecting ring and the auxiliary turning strip from affecting the working efficiency of the nozzle.

[0025] The utility model connects two protective members to the outer wall of the pipe by fixing bolts and connecting ears. Since the protective members are respectively a heating layer and a heat-insulating layer from the inside to the outside, the molten plastic material in the pipe can be prevented from being cooled prematurely under the action of the heat-insulating layer, thereby greatly improving the injection molding efficiency of the plastic mold.

[0026] The electric heating wire is started by an external controller, and the molten plastic material in the pipe can be heated under the action of the electric heating wire to prevent it from cooling down prematurely, thereby further improving the injection molding efficiency of the plastic mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of the pipeline, pipe fittings and nozzle in the utility model;

[0029] Figure 3 For this utility model Figure 2 A magnified view of middle;

[0030] Figure 4 It is a schematic diagram of the structure of the protective member in the utility model.

[0031] In the figure: 1. pipeline; 2. nozzle; 3. pipe fitting; 4. internal thread; 5. external thread; 6. ring body; 7. connecting ring; 8. auxiliary turning strip; 9. first clamping hole; 10. second clamping hole; 11. fixing pin; 12. auxiliary plate; 13. pull rod; 14. compression spring; 15. protective part; 1501. insulation layer; 1502. heating layer; 1503. electric heating wire; 16. connecting ear; 17. fixing bolt. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Embodiment 1:

[0035] See also Figure 1-3, the utility model provides a technical solution: to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot runner system for a plastic mold, comprising: a pipeline 1; a pipe fitting 3 is connected inside the pipeline 1, and a nozzle 2 is fixed at one end of the pipe fitting 3; an internal thread 4 is provided on the inner wall of the pipeline 1, and an external thread 5 is provided on the outer wall of the pipe fitting 3; the pipe fitting 3 is connected to the inside of the pipeline 1 through the external thread 5 and the internal thread 4; a ring body 6 is fixed at one end of the nozzle 2, a connecting ring 7 is provided on the outer wall of the ring body 6, an auxiliary turning strip 8 is fixed on the outer wall of the connecting ring 7, a first clamping hole 9 is provided on the outer wall of the connecting ring 7, and a second clamping hole 10 is provided on the outer wall of the ring body 6; the first clamping hole 9 and the second clamping hole 10 are clamped in the fixing pin 11, an auxiliary plate 12 is fixed at one end of the fixing pin 11, a pull strip 13 is fixed at one end of the auxiliary plate 12, a compression spring 14 is provided on the outer wall of the fixing pin 11, one end of the compression spring 14 is fixed to the auxiliary plate 12, and the other end of the compression spring 14 is fixed to the connecting ring 7.

[0036] Specifically, since the pipe fitting 3 is connected to the inside of the pipe 1 through the external thread 5 and the internal thread 4, when the pipe fitting 3 is disassembled, it is only necessary to rotate the nozzle 2 and the pipe fitting 3 in the opposite direction of the threaded connection direction of the external thread 5 and the internal thread 4 to disassemble the nozzle 2. Compared with the existing ones, the utility model makes it more convenient to disassemble the nozzle 2 by changing the connection method between the nozzle 2 and the pipe 1, thereby facilitating the maintenance of the nozzle 2.

[0037] The utility model places the connecting ring 7 on the outer wall of the ring body 6. At this time, the fixing pin 11 is driven to be clamped into the first clamping hole 9 and the second clamping hole 10 under the elastic force of the compression spring 14, so that the connecting ring 7 can be fixed to the outer wall of the ring body 6. Since the auxiliary rotating bar 8 is fixed on the outer wall of the connecting ring 7, when the nozzle 2 and the pipe fitting 3 are difficult to rotate, the staff can use the auxiliary rotating bar 8 to rotate the nozzle 2 and the pipe fitting 3, which further facilitates the disassembly and maintenance of the nozzle 2.

[0038] When the connecting ring 7 and the auxiliary turning strip 8 are disassembled, the fixing pin 11 is pulled by the pull rod 13. At this time, the compression spring 14 will perform a corresponding stretching movement. After one end of the fixing pin 11 is disengaged from the second clamping hole 10, the connecting ring 7 and the auxiliary turning strip 8 can be disassembled. Therefore, when the nozzle 2 is working, the connecting ring 7 and the auxiliary turning strip 8 can be disassembled in the utility model, thereby preventing the connecting ring 7 and the auxiliary turning strip 8 from affecting the working efficiency of the nozzle 2.

[0039] Embodiment 2:

[0040] See also Figure 1 , 4The utility model provides a technical solution: a hot runner system for a plastic mold, two protective members 15 are provided on the outer wall of a pipe 1, connecting ears 16 are fixed on the outer walls of the two protective members 15, the two protective members 15 are connected to the outer wall of the pipe 1 through the connecting ears 16 and fixing bolts 17, and the protective members 15 are respectively composed of a heating layer 1502 and a heat-insulating layer 1501 from the inside to the outside; an electric heating wire 1503 is installed inside the heating layer 1502; the electric heating wire 1503 is electrically connected to an external controller and a power supply.

[0041] Specifically, the utility model connects the two protection members 15 to the outer wall of the pipe 1 by means of the fixing bolts 17 and the connecting ears 16. Since the protection member 15 is composed of a heating layer 1502 and a heat-insulating layer 1501 from the inside to the outside, the heat-insulating layer 1501 can prevent the molten plastic material in the pipe 1 from being cooled prematurely, thereby greatly improving the injection molding efficiency of the plastic mold.

[0042] The electric heating wire 1503 is activated by an external controller, and the molten plastic material in the pipe 1 can be heated by the electric heating wire 1503 to prevent it from cooling down prematurely, thereby further improving the injection molding efficiency of the plastic mold.

[0043] Working principle:

[0044] First, since the pipe fitting 3 is connected to the inside of the pipe 1 through the external thread 5 and the internal thread 4, when the pipe fitting 3 is disassembled, it is only necessary to rotate the nozzle 2 and the pipe fitting 3 in the opposite direction along the threaded connection direction of the external thread 5 and the internal thread 4 to disassemble the nozzle 2. Compared with the existing ones, the utility model makes it more convenient to disassemble the nozzle 2 by changing the connection method of the nozzle 2 and the pipe 1, thereby facilitating the maintenance of the nozzle 2.

[0045] Secondly, by placing the connecting ring 7 on the outer wall of the ring body 6, the fixing pin 11 will be driven to engage with the first clamping hole 9 and the second clamping hole 10 under the elastic force of the compression spring 14, so that the connecting ring 7 can be fixed to the outer wall of the ring body 6. Since the auxiliary rotating bar 8 is fixed on the outer wall of the connecting ring 7, when the nozzle 2 and the pipe fitting 3 are difficult to rotate, the staff can use the auxiliary rotating bar 8 to rotate the nozzle 2 and the pipe fitting 3, which further facilitates the disassembly and maintenance of the nozzle 2;

[0046] When the connecting ring 7 and the auxiliary rotating strip 8 are disassembled, the fixing pin 11 is pulled by the pull bar 13, and the compression spring 14 will perform a corresponding stretching movement. After one end of the fixing pin 11 is disengaged from the second clamping hole 10, the connecting ring 7 and the auxiliary rotating strip 8 can be disassembled. Therefore, when the nozzle 2 is working, the connecting ring 7 and the auxiliary rotating strip 8 can be disassembled, thereby preventing the connecting ring 7 and the auxiliary rotating strip 8 from affecting the working efficiency of the nozzle 2;

[0047] Finally, the two protection members 15 are connected to the outer wall of the pipe 1 by means of the fixing bolts 17 and the connecting ears 16. Since the protection member 15 is composed of a heating layer 1502 and a heat-insulating layer 1501 from the inside to the outside, the heat-insulating layer 1501 can prevent the molten plastic material in the pipe 1 from being cooled prematurely, thereby greatly improving the injection molding efficiency of the plastic mold.

[0048] The electric heating wire 1503 is activated by an external controller, and the molten plastic material in the pipe 1 can be heated by the electric heating wire 1503 to prevent it from cooling down prematurely, thereby further improving the injection molding efficiency of the plastic mold.

[0049] In the description of the present invention, it should be understood that the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0050] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hot runner system for a plastic mold, characterized in that: include: Pipeline (1); The pipe (1) is internally connected to a pipe fitting (3), and a nozzle (2) is fixed to one end of the pipe fitting (3); The inner wall of the pipe (1) is provided with an internal thread (4), and the outer wall of the pipe fitting (3) is provided with an external thread (5); The pipe fitting (3) is connected to the inside of the pipe (1) through an external thread (5) and an internal thread (4); A ring body (6) is fixed to one end of the nozzle (2), a connecting ring (7) is provided on the outer wall of the ring body (6), and an auxiliary rotating strip (8) is fixed on the outer wall of the connecting ring (7).

2. A hot runner system for a plastic mold according to claim 1, characterized in that: A first clamping hole (9) is provided on the outer wall of the connecting ring (7), and a second clamping hole (10) is provided on the outer wall of the ring body (6); The first clamping hole (9) and the second clamping hole (10) are clamped in the fixing pin (11).

3. A hot runner system for a plastic mold according to claim 2, characterized in that: An auxiliary plate (12) is fixed to one end of the fixing pin (11), and a pull bar (13) is fixed to one end of the auxiliary plate (12).

4. A hot runner system for a plastic mold according to claim 3, characterized in that: A compression spring (14) is provided on the outer wall of the fixing pin (11), one end of the compression spring (14) is fixed to the auxiliary plate (12), and the other end of the compression spring (14) is fixed to the connecting ring (7).

5. The hot runner system for a plastic mold according to claim 1, characterized in that: Two protective members (15) are provided on the outer wall of the pipeline (1), and connecting ears (16) are fixed on the outer walls of the two protective members (15). The two protective members (15) are connected to the outer wall of the pipeline (1) through the connecting ears (16) and fixing bolts (17).

6. A hot runner system for a plastic mold according to claim 5, characterized in that: The protective member (15) comprises, from the inside to the outside, a heating layer (1502) and a heat-insulating layer (1501); An electric heating wire (1503) is installed inside the heating layer (1502); The electric heating wire (1503) is electrically connected to an external controller and a power source.

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