A hot runner system

Abstract

The utility model discloses a hot runner system, including main runner board, main runner board is equipped with main runner hole, first shunt hole, first shunt hole is linked with main runner hole, and main runner board is installed with shunt component, and shunt component inserts main runner board, and shunt component is equipped with second shunt hole, and second shunt hole is linked with first shunt hole. The utility model provides a hot runner system, and improves the quality of runner.

Description

Technical Field

[0001] This utility model relates to the field of hot runner technology, and more specifically, to a hot runner system. Background Technology

[0002] like Figure 1 As shown, current hot runner systems used in injection molding include a runner plate 100 and a manifold plate 200, which are integrally molded. The runner plate 100 has a main hole 101, and the manifold plate 200 has a distribution hole 201. The distribution hole 201 communicates with the main hole 101, which connects to the feed inlet. The material enters the hot nozzle through the distribution hole 201 for injection. Because the distribution hole 201 has a relatively long axis, it is easy for it to misalign with the main hole 101, creating a corner. This corner can easily trap material, leading to product quality issues. Furthermore, due to the integral molding structure of the runner plate 100 and the manifold plate 200, the distribution hole 201 cannot be machine-polished and can only be polished manually, resulting in poor polishing quality and a suboptimal runner system. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hot runner system to improve the quality of the runner.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a hot runner system, including a main runner plate, the main runner plate having a main runner hole and a first diversion hole, the first diversion hole communicating with the main runner hole, a diversion component installed on the main runner plate, the diversion component being inserted into the main runner plate, the diversion component having a second diversion hole, the second diversion hole communicating with the first diversion hole.

[0005] The present invention is further configured such that the second diversion hole is a blind hole.

[0006] The present invention is further configured such that the diversion component includes a first cylinder, the first cylinder is inserted into the main flow channel plate, the first cylinder includes a first end face, and the first end face abuts against the inner wall surface of the main flow channel plate to form a seal.

[0007] The present invention is further configured such that the main channel plate is provided with a second countersunk hole, and the first cylinder is threadedly connected and inserted into the second countersunk hole.

[0008] The present invention is further configured such that the main channel slab is provided with a first countersunk hole, and the first cylinder includes a second cylinder located at the end, the second cylinder being inserted into the first countersunk hole with a clearance fit.

[0009] The present invention is further configured such that the second cylinder includes a first end face, the first countersunk hole has a bottom surface, and the first end face is attached to and pressed against the bottom surface to form a seal.

[0010] The present invention is further configured such that the diversion component has a second end face, the main flow channel includes an outer wall surface, and the second end face is attached to and pressed against the outer wall surface.

[0011] The present invention is further configured such that multiple first diversion holes are provided, and each first diversion hole corresponds to a diversion component.

[0012] The present invention is further configured such that the diversion component is provided with an injection channel, the injection channel is connected to the second diversion hole, and the injection channel is the outlet of the diversion component.

[0013] The present invention is further configured such that plugs are installed at both ends of the main channel hole along the axial direction, and the plugs are inserted into the main channel hole with an interference fit.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. Since the flow divider and the main flow channel are separate, the flow divider is easier to process. The length of the first flow divider hole is relatively short. After processing, the deviation between the first flow divider hole and the main flow channel hole is very small, and it is not easy to form a corner. At the same time, it provides convenience for grinding. The grinding head can easily be inserted into the first flow divider hole and the junction of the first flow divider hole and the main flow channel hole can be polished in an arc to improve the flow channel quality.

[0016] 2. The processing of the flow divider component and the main flow channel can be carried out simultaneously. When polishing the second flow divider hole of the flow divider component, it can be directly polished on the machine to improve the smoothness of the hole wall of the second flow divider hole, thereby improving the overall flow channel quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the background technology;

[0018] Figure 2 This is a schematic diagram of the structure of an embodiment;

[0019] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4 This is a perspective view of the heater body in the embodiment;

[0021] Figure 5 This is a perspective view of the heating component in the embodiment;

[0022] Figure 6 This is a perspective view of the heating block in the embodiment.

[0023] Reference numerals: Main channel plate 1, Main channel hole 11, First diversion hole 12, First countersunk hole 13, Bottom surface 131, Second countersunk hole 14, Outer wall surface 15, Diversion component 2, Second diversion hole 21, Injection channel 211, First cylinder 22, Second cylinder 23, First end face 231, Second end face 24, Plug 3, Heater body 4, Heating block 41, First block 411, Mounting hole 4111, Second block 412, Tank 413, Heating component 42, Flat part 421, Arc-shaped part 422, Winding part 4221, Straight part 4222, Extension part 4223, Guide part 423, Flow channel plate 100, Main hole 101, Diversion plate 200, Distribution hole 201. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 2-3 As shown, this embodiment discloses a hot runner system, including a main runner plate 1. The main runner plate 1 has a main runner hole 11 and a plurality of first diversion holes 12, which are connected to the main runner hole 11. The main runner plate 1 is equipped with a plurality of diversion components 2, which are cylindrical structures. Multiple first diversion holes 12 are provided, and each first diversion hole 12 corresponds to one diversion component 2. The main runner hole 11 is connected to the inlet of the molten plastic material, which flows from the main runner hole 11 through the first diversion holes 12 to the diversion components 2. The main runner hole 11 penetrates the main runner plate 1. Plugs 3 are installed at both axial ends of the main runner hole 11. The plugs 3 are inserted into the main runner hole 11 with an interference fit to form a seal, while preventing the molten plastic material from entering between the circumferential outer wall of the plug 3 and the inner wall of the main runner plate 1, thus reducing residue.

[0026] like Figure 3 As shown, the flow divider 2 is inserted into the main flow channel plate 1. The flow divider 2 is provided with a second flow divider hole 21, which communicates with the first flow divider hole 12. Since the first flow divider hole 12 is extended through the second flow divider hole 21, the length of the first flow divider hole 12 itself is relatively short. After processing, the deviation between the first flow divider hole 12 and the main flow channel hole 11 is very small, making it less likely to form a corner. At the same time, it provides convenience for grinding. The grinding head can easily extend into the first flow divider hole 12 and perform arc polishing on the junction of the first flow divider hole 12 and the main flow channel hole 11, thereby improving the flow channel quality.

[0027] like Figure 3As shown, the diversion component 2 includes a first cylindrical body 22 located at one axial end, the diversion component 2 has a second end face 24, the first cylindrical body 22 extends outward along the second end face 24, and the outer wall of the first cylindrical body 22 is threaded. The first cylindrical body 22 includes a second cylindrical body 23 on the side away from the diversion component 2, and the outer peripheral wall of the second cylindrical body 23 is smooth.

[0028] The main channel plate 1 includes an outer wall surface 15, and the diversion component 2 is inserted into the main channel plate 1 through the outer wall surface 15. The main channel plate 1 is provided with a second countersunk hole 14, and the first cylindrical body 22 is threadedly inserted into the second countersunk hole 14. The main channel plate 1 is also provided with a first countersunk hole 13, and the first cylindrical body 22 includes a second cylindrical body 23 located at the end, which is inserted into the first countersunk hole 13 with a clearance fit. The first countersunk hole 13, the second countersunk hole 14, and the first diversion hole 12 are formed by a single clamping process, and the three have high coaxiality.

[0029] The first cylinder 22 includes a first end face 231. More precisely, the second cylinder 23 includes a first end face 231. The first countersunk hole 13 is provided with a bottom surface 131. The first end face 231 is attached to and pressed against the bottom surface 131 to form a seal.

[0030] The second cylinder 23 is inserted into the first countersunk hole 13 through a gap fit to form a limit, thereby improving the docking accuracy between the first diversion hole 12 and the second diversion hole 21, reducing the flow channel bend caused by misalignment of the two holes, and reducing the residue of plastic melt. Through high-precision machining, the first end face 231 is attached to and pressed against the bottom surface 131 to form a seal, while the second end face 24 is attached to and pressed against the outer wall surface 15. Since the diversion component 2 is installed on the main flow channel plate 1 in a cantilever state, once the diversion component 2 is subjected to force, the first end face 231 and the bottom surface 131 are prone to partial separation. At this time, by setting the second end face 24 to be attached to and pressed against the outer wall surface 15, support is provided to prevent the position of the diversion component 2 from shifting and causing the first end face 231 and the bottom surface 131 to separate, thereby causing leakage problems.

[0031] like Figure 2 As shown, the second diversion hole 21 is a blind hole, so no additional plug is needed, reducing the risk of leakage. Since the diversion component 2 and the main flow channel plate 1 are separate, the processing of the diversion component 2 is more convenient. The processing of the diversion component 2 and the main flow channel plate 1 can be carried out simultaneously. During polishing, the second diversion hole 21 of the diversion component 2 can be directly polished on the machine, improving the smoothness of the hole wall of the second diversion hole 21, thereby improving the overall flow channel quality.

[0032] The flow divider 2 is provided with a glue injection channel 211, which is connected to the second flow divider 21. The glue injection channel 211 is the outlet of the hot runner plate and is connected to the hot nozzle of the hot runner system.

[0033] like Figures 3-6As shown, a hot runner heater is installed on the outer wall of the flow divider 2. The hot runner heater includes a heater body 4 and a heating element 42. The heater body 1 is made of thermally conductive metal. Preferably, the heater body 4 is made of aluminum, which has a melting point of 660℃, much lower than that of copper, making it easy to cast. The heater body 4 is rectangular and has an axially penetrating groove 413. The flow divider 2 is inserted into the groove 413. The heater body 4 includes a second block 412, which is flat and is located on both sides of the heater body 4.

[0034] The heater body 4 is cast onto the surface of the heating element 42, allowing the heating element 42 to be embedded within the heater body 4. The heating element 42 is made of copper and is formed by bending a copper strip. Specifically, the heater body 4 includes at least two heating blocks 41, which are joined together to form the heater body 4. The heating element 42 includes a flat portion 421 and an arc-shaped portion 422. Each heating block 41 includes a first block 411 and a second block 412. The arc-shaped portion 422 is embedded in the arc-shaped wall of the groove 413. The axis of the arc-shaped portion 422 is parallel to the axis of the groove 413. The arc-shaped portion 422 is centrally located within the heater body 4. Since the splicing surface between the two second blocks 412 has mounting holes 4111, bolt connections are required. Therefore, the arc of the arc-shaped portion 422 is 120-140 degrees, which is less than the 180 degrees of the groove 413.

[0035] The arc-shaped portion 422 includes a meandering portion 4221 and a straight portion 4222 located at both ends in the arc direction. The meandering portion 4221 is meandering, and the straight portion 4222 is straight. The meandering portion 4221 is designed to increase the distribution density and improve heating efficiency. The straight portion 4222 is designed to be straight because the concave portion of the meandering portion 4221 near the middle of the arc of the straight portion 4222 is close to the arc of the arc-shaped portion 422, which limits the size space. The straight portion 4222 includes an extension portion 4223 located at the tail end. The extension portion 4223 extends towards the side closer to the arc-shaped portion 422 to improve the strength of the arc-shaped portion 422.

[0036] The flat portion 421 is embedded in the second block 412, and the heating component 42 also includes a guide portion 423, which extends out of the flat portion 421 along the plane of the flat portion 421.

[0037] After the hot runner heater is installed on the outer wall of the flow divider 2, since the flow divider 2 and the main runner plate 1 are separate, and the flow divider 2 is cylindrical, the grooves 413 of the two heating blocks 41 are arc-shaped, so that the walls of the grooves 413 of the two heating blocks 41 can hug the outer wall of the flow divider 2. This solves the problem that the traditional hot runner plate is inconvenient to process because it is an integral piece, and the heating strips can only be distributed in two directions of the hot runner plate. In this embodiment, the flow divider 2 forms more heating points in the circumferential direction, which improves the heating efficiency.

[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A hot runner system, characterized in that, The system includes a main channel plate (1), which has a main channel hole (11) and a first diversion hole (12). The first diversion hole (12) is connected to the main channel hole (11). The main channel plate (1) is equipped with a diversion component (2), which is inserted into the main channel plate (1). The diversion component (2) has a second diversion hole (21), which is connected to the first diversion hole (12).

2. A hot runner system according to claim 1, characterized in that, The second diversion hole (21) is a blind hole.

3. A hot runner system according to claim 1, characterized in that, The diversion component (2) includes a first cylinder (22) which is inserted into the main flow channel plate (1). The first cylinder (22) includes a first end face (231) which abuts against the inner wall of the main flow channel plate (1) to form a seal.

4. A hot runner system according to claim 3, characterized in that, The main channel plate (1) is provided with a second countersunk hole (14), and the first cylinder (22) is threadedly inserted into the second countersunk hole (14).

5. A hot runner system according to claim 3, characterized in that, The main channel slab (1) is provided with a first countersunk hole (13), and the first cylinder (22) includes a second cylinder (23) located at the end, and the second cylinder (23) is inserted into the first countersunk hole (13) with clearance fit.

6. A hot runner system according to claim 5, characterized in that, The second cylinder (23) includes the first end face (231), the first countersunk hole (13) is provided with a bottom surface (131), and the first end face (231) is attached to and pressed against the bottom surface (131) to form a seal.

7. A hot runner system according to claim 3, characterized in that, The diversion component (2) is provided with a second end face (24), and the main flow channel plate (1) includes an outer wall surface (15). The second end face (24) is attached to and pressed against the outer wall surface (15).

8. A hot runner system according to claim 1, characterized in that, Multiple first diversion holes (12) are provided, and each first diversion hole (12) corresponds to a diversion component (2).

9. A hot runner system according to claim 1, characterized in that, The diversion component (2) is provided with a glue injection channel (211), which is connected to the second diversion hole (21) and is the outlet of the diversion component (2).

10. A hot runner system according to claim 1, characterized in that, The main channel hole (11) is equipped with plugs (3) at both axial ends, and the plugs (3) are inserted into the main channel hole (11) with an interference fit.

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