Centrosymmetric hot runner plate

Abstract

The utility model discloses a central symmetry type hot runner plate, which belongs to the technical field of hot runner plates and comprises an upper hot runner plate, a lower hot runner plate is arranged at the bottom of the upper hot runner plate, and an upper hot runner and a lower hot runner are respectively arranged on opposite side surfaces of the upper hot runner plate and the lower hot runner plate. An upper side plate and a lower side plate are arranged on the periphery of the upper hot runner and the periphery of the lower hot runner correspondingly, heating plates are arranged in the upper hot runner plate and the lower hot runner plate correspondingly, and extension plates are arranged on the two sides of supporting plates of the heating plates correspondingly. And the heating plates on the upper hot runner plate and the lower hot runner plate are matched to surround a hot runner formed by the upper hot runner and the lower hot runner, so that the heating uniformity of a solution in the hot runner is improved, and the situations that the flowing state of the solution is influenced due to non-uniform heating of the solution, a retention dead point occurs, and the glue discharging uniformity is influenced are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of hot runner plate technology, specifically relating to a centrally symmetrical hot runner plate. Background Technology

[0002] Hot runner technology represents a new stage in the development of injection molding technology, offering significant advantages in reducing costs, improving product quality, shortening molding cycles, and increasing automation. A hot runner system typically consists of a hot runner plate, hot nozzles, and temperature control accessories. The hot runner plate is the core component of the entire system, its main function being to efficiently distribute the melt to each nozzle. To fully leverage the advantages of hot runner technology, multi-cavity molds are the primary direction for its development and application, thus placing higher demands on the hot runner plate.

[0003] Currently, the flow channel shape in existing hot runner plates is relatively simple, making it difficult to control the flow state of the melt in the flow channel. Since the heating components cannot heat the melt evenly, it is difficult to ensure uniform glue dispensing from each nozzle during use, and dead spots are prone to occur. Therefore, we propose a centrally symmetrical hot runner plate. Utility Model Content

[0004] The purpose of this invention is to provide a centrally symmetrical hot runner plate to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a centrally symmetrical hot runner plate, comprising an upper hot runner plate, a heating plate, and an extension plate. A lower hot runner plate is fixedly installed at the bottom of the upper hot runner plate by bolts. Both the upper and lower hot runner plates have a cross-shaped structure. Upper and lower hot runner channels are respectively formed on the opposite side surfaces of the upper and lower hot runner plates. Upper and lower side plates are respectively provided on the outer periphery of the upper and lower hot runner channels. A heating plate is fixedly installed inside both the upper and lower hot runner plates. The heating plate also has a cross-shaped structure. Extension plates are provided on both sides of the support plate of the heating plate. The extension plates extend to the outer side of the upper and lower side plates and are embedded therein. The extension plates are made of a thermally conductive material.

[0006] Preferably, the bottom surface of the upper side plate is provided with a fitting groove, and the top surface of the lower side plate is provided with a fitting protrusion. The upper side plate and the lower side plate are spliced ​​together by the provided fitting groove and fitting protrusion.

[0007] Preferably, a feed nozzle is provided at the top center of the upper hot runner plate, and a feed inlet is provided at the inner center of the upper hot runner. The feed nozzle extends into the interior of the upper hot runner and is sealed and connected to the feed inlet.

[0008] Preferably, the bottom of the lower hot runner plate is provided with discharge nozzles around its perimeter, and the bottom surface of the lower hot runner is provided with a discharge port at its end, and the discharge nozzles and the discharge port are sealed and connected.

[0009] Preferably, an upper heat insulation groove is formed between the upper heat flow channel plate and the upper side plate, and a lower heat insulation groove is formed between the lower heat flow channel plate and the lower side plate, with the upper heat insulation groove and the lower heat insulation groove fitting together.

[0010] Preferably, the heating plate has through holes at its center and at the ends of the four support plates. The through holes penetrate the heating plate and are fitted around the outer periphery of the feed nozzle or discharge nozzle.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By improving the traditional heating plate, extension plates are set on both sides and extended and embedded into the upper and lower side plates. Together with the heating plates on the upper and lower hot runner plates, the hot runners formed by the upper and lower hot runners are surrounded, thereby improving the uniformity of the melt heating inside the hot runners. This avoids the situation where the melt flow state is affected by uneven heating, resulting in dead spots and affecting the uniformity of glue dispensing.

[0013] 2. By opening upper and lower heat insulation grooves between the hot runners on the upper and lower side plates, the efficiency of heat transfer from the plate to the other side is extended, so that heat can be concentrated on the upper and lower side plates as much as possible, thereby reducing heat loss and ensuring heating stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a multi-angle structural schematic diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the lower heat flow channel plate structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the heating plate structure of this utility model.

[0018] In the diagram: 1. Upper hot runner plate; 2. Feed nozzle; 3. Feed inlet; 4. Upper hot runner; 5. Upper side plate; 6. Upper heat insulation groove; 7. Heating plate; 8. Through hole; 9. Extension plate; 10. Lower hot runner plate; 11. Lower hot runner; 12. Discharge port; 13. Discharge nozzle; 14. Lower side plate; 15. Lower heat insulation groove; 16. Fitting groove; 17. Fitting protrusion. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a centrally symmetrical hot runner plate technical solution: including an upper hot runner plate 1, a heating plate 7, and an extension plate 9. The bottom of the upper hot runner plate 1 is fixedly installed with a lower hot runner plate 10 by bolts. Both the upper hot runner plate 1 and the lower hot runner plate 10 have a cross-shaped structure. The opposite side surfaces of the upper hot runner plate 1 and the lower hot runner plate 10 are respectively provided with an upper hot runner 4 and a lower hot runner 11. The outer periphery of the upper hot runner 4 and the lower hot runner 11 are respectively provided with an upper side plate 5 and a lower side plate 14. The heating plate 7 is fixedly installed inside the upper hot runner plate 1 and the lower hot runner plate 10. The heating plate 7 also has a cross-shaped structure. The support plates of the heating plate 7 are provided with extension plates 9 on both sides. The extension plates 9 extend to the outer side of the upper side plate 5 and the lower side plate 14 and are embedded therein. The extension plates 9 are made of a heat-conducting material.

[0021] Specifically, the bottom surface of the upper side plate 5 is provided with a fitting groove 16, and the top surface of the lower side plate 14 is provided with a fitting protrusion 17. The upper side plate 5 and the lower side plate 14 are spliced ​​together by the fitting groove 16 and the fitting protrusion 17.

[0022] Specifically, a feed nozzle 2 is provided at the top center of the upper hot runner plate 1, and a feed inlet 3 is provided at the inner center of the upper hot runner 4. The feed nozzle 2 extends into the interior of the upper hot runner 4 and is sealed and connected to the feed inlet 3.

[0023] Specifically, the bottom of the lower hot runner plate 10 is provided with discharge nozzles 13 around its perimeter, and the bottom of the lower hot runner 11 is provided with a discharge port 12. The discharge nozzles 13 and the discharge port 12 are sealed and connected.

[0024] Specifically, an upper heat insulation groove 6 is provided between the upper hot runner plate 1 and the upper side plate 5, and a lower heat insulation groove 15 is provided between the lower hot runner plate 10 and the lower side plate 14, with the upper heat insulation groove 6 and the lower heat insulation groove 15 fitting together.

[0025] Specifically, through holes 8 are provided at the center of the heating plate 7 and at the ends of the four support plates. The through holes 8 penetrate the heating plate 7 and are fitted around the outer periphery of the feed nozzle 2 or the discharge nozzle 13.

[0026] In this embodiment, during use, the upper hot runner plate 1 and the lower hot runner plate 10 are fixedly spliced ​​together by bolts. The upper side plate 5 and the lower side plate 14, together with the fitting groove 16 and the fitting protrusion 17, form a seal for the upper hot runner 4 and the lower hot runner 11 to ensure their airtightness. The heating plate 7 heats the upper hot runner plate 1 and the lower hot runner plate 10, and the extension plate 9 extends to both sides of the upper side plate 5 and the lower side plate 14 to wrap the hot runner formed by the upper hot runner 4 and the lower hot runner 11, thereby achieving the effect of wrapping and heating the melt inside, so as to achieve the purpose of uniform heating, ensure that the melt is heated evenly, and avoid the situation where the melt flow state is affected by uneven heating, resulting in stagnation dead points and affecting the uniformity of dispensing.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrally symmetrical hot runner plate, comprising an upper hot runner plate (1), a heating plate (7), and an extension plate (9), characterized in that: The bottom of the upper hot runner plate (1) is fixedly installed with a lower hot runner plate (10) by bolts. Both the upper hot runner plate (1) and the lower hot runner plate (10) are cross-shaped structures. The upper hot runner (4) and the lower hot runner plate (11) are respectively provided on the opposite side surfaces of the upper hot runner plate (1) and the lower hot runner plate (10). The upper hot runner (4) and the lower hot runner (11) are respectively provided with an upper side plate (5) and a lower side plate (14). The heating plate (7) is fixedly installed inside the upper hot runner plate (1) and the lower hot runner plate (10). The heating plate (7) is also cross-shaped. The support plate of the heating plate (7) is provided with an extension plate (9) on both sides. The extension plate (9) extends to the outside of the upper side plate (5) and the lower side plate (14) and is embedded therein. The extension plate (9) is made of heat-conducting material.

2. The centrally symmetrical hot runner plate according to claim 1, characterized in that: The bottom surface of the upper side plate (5) is provided with a fitting groove (16), and the top surface of the lower side plate (14) is provided with a fitting protrusion (17). The upper side plate (5) and the lower side plate (14) are spliced ​​together by the provided fitting groove (16) and fitting protrusion (17).

3. The centrally symmetrical hot runner plate according to claim 1, characterized in that: The upper hot runner plate (1) is provided with a feed nozzle (2) at the top center position, and the upper hot runner (4) is provided with a feed port (3) at the inner center position. The feed nozzle (2) extends into the interior of the upper hot runner (4) and is sealed and connected to the feed port (3).

4. The centrally symmetrical hot runner plate according to claim 1, characterized in that: The bottom of the lower hot runner plate (10) is provided with a discharge nozzle (13) around its perimeter, and the bottom surface of the lower hot runner (11) is provided with a discharge port (12) at its end. The discharge nozzle (13) and the discharge port (12) are sealed and connected.

5. The centrally symmetrical hot runner plate according to claim 1, characterized in that: An upper heat insulation groove (6) is provided between the upper heat flow channel plate (1) and the upper side plate (5), and a lower heat insulation groove (15) is provided between the lower heat flow channel plate (10) and the lower side plate (14). The upper heat insulation groove (6) and the lower heat insulation groove (15) fit together.

6. The centrally symmetrical hot runner plate according to claim 1, characterized in that: The heating plate (7) has through holes (8) at its center and at the ends of the four support plates. The through holes (8) penetrate the heating plate (7) and are fitted around the feed nozzle (2) or the discharge nozzle (13).

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