Double-color air door injection mold for air outlet of automobile air conditioner

Abstract

This utility model provides an injection mold for a two-color air vent in an automotive air conditioning unit, comprising an upper injection mold body, a lower injection mold body, an intermediate mold body, and a mold support base. The upper and lower injection mold bodies are connected by the intermediate mold body. The top of the upper injection mold body has an upper mold plate with a sprue plate. A main gating channel is installed at the sprue plate on the upper mold plate. A flow divider is located at the bottom of the main gating channel. A spiral groove is formed on the outer surface of the main gating channel, and a water pipe is installed on the outer surface of the spiral groove. The water pipe is connected to the flow divider, and water flow channels are respectively provided at the inlet and outlet of the water pipe. A quick-connect connector is provided at one end of each water flow channel. This utility model can deliver water to the water pipe and allow the water to flow along the spiral groove, thus reducing the temperature on the outer side of the main gating channel and improving the stability of the hot-melted material inside the main gating channel, facilitating better cooling and molding.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and relates to a two-color damper injection mold for automotive air conditioning vents. Background Technology

[0002] Automotive air conditioning not only improves driving comfort, reduces driver fatigue, and enhances vehicle safety, but it is also a crucial means of elevating a vehicle's grade and market competitiveness. The air damper, as the executor of the air conditioning unit's mechanism, plays a key role in the air conditioning's performance. Traditional air dampers are manufactured using ordinary injection molding, and the seal between the damper and the housing is achieved by attaching a semi-open, semi-closed sponge around the damper's perimeter. This method increases material costs and consumes a significant amount of manpower; therefore, ordinary injection-molded air dampers are gradually being replaced by two-color air dampers.

[0003] For example, patent publication number CN210679479U discloses a rotary two-color automotive air conditioning damper injection mold, belonging to the field of injection molds. It includes a rotary base with two injection molds symmetrically arranged about the center point of the base. Each injection mold includes a fixed mold plate and a movable mold plate. Each of the two movable mold plates has a first forming surface for forming an inner surface, and the two first forming surfaces are centrally symmetrical. The two fixed mold plates each have a second forming surface and a third forming surface for forming an outer surface, with the second and third forming surfaces corresponding one-to-one with the two first forming surfaces. Each fixed mold plate has a wedge for demolding on each side. The advantages of this invention are that the first forming surface and the second and third forming surfaces are respectively joined, allowing for the injection of molding liquid in two stages. It can also use two different materials of injection liquid, resulting in a clearly defined layered structure in the plastic part. For complex plastic parts, it can quickly and completely mold the complex structural connections within the plastic part.

[0004] The disadvantages of the aforementioned injection mold are: when the molten material is poured, the temperature of the molten material entering the hot runner is high, and high-temperature and high-pressure bubbles are easily generated after entering the mold cavity, which increases the cooling time and affects the quality of the two-color damper. Therefore, we have designed an injection mold for a two-color damper for automotive air conditioning vents. Summary of the Invention

[0005] The purpose of this invention is to provide a two-color damper injection mold for automotive air conditioning vents to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: a dual-color air damper injection mold for an automotive air conditioning vent, comprising an upper injection mold body, a lower injection mold body, an intermediate mold body, and a mold support base. The upper and lower injection mold bodies are connected by the intermediate mold body. The mold support base is installed at the bottom of the lower injection mold body and connected to the intermediate mold body and the upper injection mold body via a guide rod. The injection mold has a top plate with a sprue plate at its top. A main gating channel is installed at the sprue plate of the top plate. A flow divider is provided at the bottom of the main gating channel. A spiral groove is formed on the outer surface of the main gating channel. A water pipe is provided on the outer surface of the spiral groove. The water pipe is connected to the flow divider and water flow lines are respectively provided at the inlet and outlet of the water pipe. A quick-connect connector is provided at one end of each of the two water flow lines.

[0007] In the aforementioned injection mold for a dual-color air vent damper in an automotive air conditioning unit, the inner side of the upper injection mold has two runner connectors. Each of the two runner connectors has a runner at its bottom, and the two runner connectors connect to a flow divider column. Each of the two injection cavities of the lower injection mold has a moving module installed. The top of each moving module has a corresponding molding core from the upper injection mold, and the two runners are connected to the molding core. This design allows the hot-melt material entering the main gating channel to be diverted to the runners, and then transferred to the molding core for injection molding of the dual-color air vent damper.

[0008] In the aforementioned injection mold for a dual-color air vent damper for automotive air conditioning vents, a demolding cylinder is installed in the middle of the inner side of the lower injection mold. The output shaft of the demolding cylinder is equipped with a prying linkage, and one end of each of the two prying linkages is equipped with an ejector rod, which corresponds to one of the two forming mold cores. A lifting fulcrum is installed at the middle position of each of the two prying linkages, and the two lifting fulcrums are connected to the lower injection mold. This design allows the demolding cylinder to move one end of the prying linkage downwards, causing the other end to move upwards, thereby ejecting the dual-color air vent damper formed by the mold cores and facilitating its removal.

[0009] In the aforementioned injection mold for a dual-color air vent damper in an automotive air conditioning unit, the vertical distance that the prying linkage lifts with the lifting fulcrum as the fulcrum is equal to the stroke of the demolding cylinder, and both are 25 mm. This design facilitates precise ejection of the molded dual-color air vent damper, ensuring ejection accuracy.

[0010] Compared with the prior art, the advantages of this utility model of automotive air conditioning vent dual-color damper injection mold are as follows: by opening a spiral groove on the outer surface of the main gating channel, and setting a water pipe strip on the outer surface of the spiral groove, the water pipe strip is connected to the diverter column, and water flow pipes are respectively set at the inlet and outlet of the water pipe strip. The water flow pipes can be connected to a water source, thereby enabling the water source to be transported to the water pipe strip and allowing the water to flow along the spiral groove. This can reduce the temperature on the outside of the main gating channel, reduce the instability of the hot melt material on the inside of the main gating channel, and facilitate better cooling and molding. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the injection mold for the dual-color damper of the automotive air conditioning vent.

[0012] Figure 2 This is a three-dimensional structural diagram of the flow divider column of the injection mold for the dual-color damper of the automotive air conditioning vent.

[0013] Figure 3 This is a schematic cross-sectional view of the upper injection mold of the dual-color damper injection mold for automotive air conditioning outlets, which is a specific invention.

[0014] Figure 4 This is a schematic cross-sectional view of the lower mold of the two-color damper injection mold for automotive air conditioning vents, which is a specific feature of this utility model.

[0015] In the diagram, 1. Upper injection mold body; 2. Lower injection mold body; 3. Intermediate mold body; 4. Mold support base; 5. Upper mold top plate; 6. Main gating channel; 7. Runner connector; 8. Runner; 9. Moving module; 10. Molding core; 11. Spiral groove; 12. Water pipe; 13. Water flow pipe; 14. Quick connector; 15. Runner column; 16. Demolding cylinder; 17. Prying rod; 18. Lifting fulcrum; 19. Ejector rod. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technology of the dual-color damper injection mold for automotive air conditioning vents of this utility model is as follows: First embodiment: The injection mold includes an upper injection mold body 1, a lower injection mold body 2, an intermediate mold body 3, and a mold support base 4. The upper injection mold body 1 and the lower injection mold body 2 are connected by the intermediate mold body 3. The mold support base 4 is installed at the bottom end of the lower injection mold body 2 and is connected to the intermediate mold body 3 and the upper injection mold body 1 by a guide rod. The top of the injection mold body 1 is provided with an upper mold plate 5 with a sprue plate. The sprue plate of the upper mold plate 5 is equipped with a main gating channel 6. The bottom end of the main gating channel 6 is provided with a flow divider 15. The outer surface of the main gating channel 6 is provided with a spiral groove 11. The outer surface of the spiral groove 11 is provided with a water pipe 12. The water pipe 12 is connected to the flow divider 15, and water flow pipes 13 are respectively provided at the inlet and outlet of the water pipe 12. One end of the two water flow pipes 13 is provided with a quick connection connector 14.

[0018] This solution allows access to a water source via water pipe 13, which then delivers the water to water pipe belt 1 and allows the water to flow along the spiral groove 11. This reduces the temperature on the outside of the main pouring channel 6, decreases the instability of the hot-melt material inside the main pouring channel, and facilitates better cooling and molding.

[0019] Second embodiment: Based on the first embodiment, the same structure will not be described again. The inner side of the upper injection mold body 1 is provided with two runner connectors 7, and the bottom of the two runner connectors 7 is provided with runners 8. The two runner connectors 7 are connected to the runner column 15. The two injection cavities of the lower injection mold body 2 are each equipped with a moving module 9. The top of the two moving modules 9 is provided with a forming core 10 corresponding to the upper injection mold body 1. The two runners 8 are connected to the forming core 10.

[0020] Third embodiment: The injection mold includes an upper injection mold body 1, a lower injection mold body 2, an intermediate mold body 3, and a mold support base 4. The upper injection mold body 1 and the lower injection mold body 2 are connected by the intermediate mold body 3. The mold support base 4 is installed at the bottom end of the lower injection mold body 2 and is connected to the intermediate mold body 3 and the upper injection mold body 1 by a guide rod. The top of the injection mold body 1 is provided with an upper mold plate 5 with a sprue plate. The sprue plate of the upper mold plate 5 is provided with a main gating channel 6. The bottom end of the main gating channel 6 is provided with a flow divider 15. The outer surface of the main gating channel 6 is provided with a spiral groove 11. The outer surface of the spiral groove 11 is provided with a water pipe 12. The water pipe 12 is connected to the flow divider 15, and water flow pipes 13 are provided at the inlet and outlet of the water pipe 12 respectively. One end of the two water flow pipes 13 is provided with a quick connection connector 14. A demolding cylinder 16 is installed in the middle of the inner side of the injection mold lower mold body 2. The output shaft of the demolding cylinder 16 is equipped with a prying rod 17. One end of each of the two prying rods 17 is equipped with an ejector rod 19, and the two ejector rods 19 correspond to the two molding cores 10 respectively. A lifting fulcrum 18 is installed at the middle position of each of the two prying rods 17, and the two lifting fulcrum 18 are connected to the injection mold lower mold body 2.

[0021] Among them, the vertical distance that the prying linkage 17 lifts with the lifting fulcrum 18 as the fulcrum is equal to the stroke of the demolding cylinder 16 and both are 25 mm.

[0022] The above solution uses the demolding cylinder 16 to drive one end of the prying rod 17 downward, causing the other end of the prying rod 17 to move upward, thereby allowing the air conditioning vent dual-color damper formed by the molding core 10 to be ejected, making it easier to remove the air conditioning vent dual-color damper.

[0023] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. An injection mold for a dual-color damper of an automotive air conditioning vent, comprising an upper injection mold body (1), a lower injection mold body (2), an intermediate mold body (3), and a mold support base (4), wherein the upper injection mold body (1) and the lower injection mold body (2) are connected by the intermediate mold body (3) and the mold support base (4) is installed at the bottom end of the lower injection mold body (2) and connected to the intermediate mold body (3) and the upper injection mold body (1) by a guide rod, characterized in that; The top of the injection mold body (1) is provided with an upper mold plate (5) with a sprue plate. The sprue plate of the upper mold plate (5) is provided with a main gating channel (6). The bottom end of the main gating channel (6) is provided with a flow divider (15). The outer surface of the main gating channel (6) is provided with a spiral groove (11). The outer surface of the spiral groove (11) is provided with a water pipe (12). The water pipe (12) is connected to the flow divider (15), and water flow pipes (13) are provided at the inlet and outlet of the water pipe (12). One end of the two water flow pipes (13) is provided with a quick connection connector (14).

2. The injection mold for the dual-color damper of an automotive air conditioning vent according to claim 1, characterized in that, The inner side of the injection mold body (1) is provided with two runner connectors (7), and the bottom of the two runner connectors (7) is provided with runners (8). The two runner connectors (7) are connected to the runner column (15).

3. The injection mold for the dual-color damper of an automotive air conditioning vent according to claim 2, characterized in that, The two injection cavities of the lower injection mold body (2) are each equipped with a moving module (9), and the top of the two moving modules (9) is provided with a molding core (10) corresponding to the upper injection mold body (1). The two branch channels (8) are connected to the molding core (10).

4. The injection mold for the dual-color damper of an automotive air conditioning vent according to claim 1, characterized in that, A demolding cylinder (16) is installed in the middle of the inner side of the injection mold body (2). The output shaft of the demolding cylinder (16) is equipped with a prying rod (17). One end of each of the two prying rods (17) is equipped with an ejector rod (19). The two ejector rods (19) correspond to two molding cores (10) respectively.

5. The injection mold for the dual-color damper of an automotive air conditioning vent according to claim 4, characterized in that, Both of the two prying rods (17) are equipped with a lifting fulcrum (18) at the middle position, and the two lifting fulcrums (18) are connected to the injection mold body (2).

6. The automobile air conditioner air outlet double-color air door injection mold of claim 5, wherein, The vertical distance that the prying link (17) lifts with the lifting fulcrum (18) as the fulcrum is equal to the stroke of the demolding cylinder (16) and both are 25 mm.

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