A fast-cooling injection mold for automotive interior trim

Abstract

This invention provides a rapid-cooling injection mold for automotive interior components, relating to the field of injection mold technology. It includes an injection mold assembly with a spray system at its bottom and a sealing component inside. The assembly comprises an upper mold and a lower mold, both with cooling pipes inside. This invention utilizes multiple nozzles distributed on a spray frame to effectively cool the upper and lower molds. A lifting motor electrically drives a threaded rod to rotate, thereby raising and lowering the spray frame and increasing the spray range. Flexible hoses are connected to the coolant inlet and outlet to facilitate coolant flow within the cooling pipes, further cooling the upper and lower molds. This combined internal and external cooling mechanism achieves rapid cooling and improves cooling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a fast-cooling injection mold for automotive interiors. Background Technology

[0002] Injection molding is a method in which plastic material is completely melted by stirring with a screw at a certain temperature, and then injected into a mold cavity under high pressure. After cooling and solidification, a molded product is obtained. Plastic molds are a type of combined plastic mold used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. They mainly include a cavity mold with a variable cavity, consisting of a cavity mold assembly base plate, cavity mold components, and cavity mold assembly clamping plate, and a punch mold with a variable core, consisting of a punch mold assembly base plate, punch components, punch assembly clamping plate, cavity cut-off components, and side cut-off assembly plates. They are widely used in the injection molding of plastic trim parts for automobiles.

[0003] In the prior art, such as the patent application CN221851077U entitled "An Injection Mold for Automotive Interior Parts with Rapid Cooling Function", a lower mold, an upper mold, and an injection groove are included. The lower mold and the upper mold have injection grooves on opposite sides. A lower cooling cavity is formed inside the lower mold outside the injection groove. This utility model uses a combined cooling mechanism. The lower cooling cavity can rapidly cool a large area of ​​the bottom surface of the injection molded part, while the upper cooling cavity can locally cool the upper part of the injection molded part. With the help of the ejector block, the injection molded part can be pushed out from the lower mold. Pushing after cooling can better prevent the injection molded part from deforming. This solves the problem that existing automotive interior part injection molds will harden if the cooling is too fast and affect the material removal of the injection molded part if the injection is too slow. It greatly improves the practicality of the injection mold, avoids affecting the entry of molten material during subsequent injection, and can also ensure the cooling effect and facilitate the removal of the injection molded part.

[0004] Existing injection molds typically rely on circulating coolant inside cooling pipes for rapid cooling. However, relying solely on coolant for cooling can easily lead to a decrease in heat exchange efficiency, resulting in a reduction in overall cooling efficiency. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that in the existing technology, injection molds usually rely on circulating coolant inside the cooling pipe for rapid cooling, but relying solely on coolant cooling can easily lead to a decrease in heat exchange efficiency, thereby reducing the overall cooling efficiency. Therefore, this invention proposes a rapid cooling injection mold for automotive interior parts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rapid cooling injection mold for automotive interior trim, comprising an injection mold assembly, a spray assembly at the bottom of the injection mold assembly, a sealing assembly inside the injection mold assembly, the injection mold assembly including an upper mold and a lower mold, both of which have cooling pipes inside, one end of the cooling pipe having a coolant inlet and the other end having a coolant outlet, the spray assembly including a collection box and a spray frame, a filter screen installed inside the collection box, multiple nozzles distributed on the inner side of the spray frame, a telescopic hose connected to the side of the spray frame, and a pump connected to one end of the telescopic hose.

[0007] Preferably, the sealing assembly includes a sealing frame, and a sealing strip is provided inside the lower mold.

[0008] Preferably, a storage tank is installed at the bottom of the pump, and a water inlet pipe is installed at one end of the storage tank.

[0009] Preferably, one end of the collection box is connected to a drain pipe, and a valve is provided in the middle of the drain pipe.

[0010] Preferably, a threaded rod passes through the interior of one end of the spray frame, a lifting motor is installed at the bottom of the threaded rod, and a guide rod passes through the interior of the other end of the spray frame.

[0011] Preferably, the top of the upper mold is connected to an injection port.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, connecting the coolant inlet and outlet to flexible hoses facilitates the flow of coolant within the cooling pipe, thereby cooling the upper and lower molds. A pump draws water from the storage tank and delivers it through a telescopic hose to the spray frame, where it is sprayed out through multiple nozzles, effectively cooling the upper and lower molds. A lifting motor electrically drives a threaded rod to rotate, raising and lowering the spray frame and increasing the spray range. A guide rod provides guidance, ensuring effective cooling of the upper and lower molds. This internal and external cooling mechanism facilitates rapid cooling, improves cooling efficiency, shortens the injection molding cycle, and ultimately increases production efficiency.

[0013] 2. In this utility model, sealing frames are provided on both the upper and lower molds, which helps to increase the sealing performance of the connection between the upper and lower molds. The sealing strip on the top of the lower mold further improves the sealing performance of the injection cavity, thereby ensuring stable injection molding inside the injection cavity and improving the injection molding effect. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a rapid cooling automotive interior injection mold is provided for this utility model. Figure 2 This utility model presents a schematic diagram of another angle of the structure of an injection mold for rapid cooling of automotive interior parts; Figure 3 A schematic diagram of a spray assembly structure for a rapid cooling automotive interior injection mold is provided for this utility model. Figure 4 This invention provides a partial cross-sectional view of an injection mold for rapidly cooling automotive interior components.

[0015] Legend: 1. Injection mold assembly; 101. Upper mold; 102. Injection port; 103. Lower mold; 104. Coolant inlet; 105. Coolant outlet; 2. Spray assembly; 201. Collection tank; 202. Filter screen; 203. Spray frame; 204. Threaded rod; 205. Lifting motor; 206. Guide rod; 207. Telescopic hose; 208. Pump; 209. Storage tank; 210. Drain pipe; 3. Sealing assembly; 301. Sealing frame; 302. Sealing strip. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figures 1-4As shown, this utility model provides a technical solution: a rapid-cooling automotive interior injection mold, including an injection mold assembly 1, a spray assembly 2 at the bottom of the injection mold assembly 1, and a sealing assembly 3 inside the injection mold assembly 1. The injection mold assembly 1 includes an upper mold 101 and a lower mold 103, both of which have cooling pipes inside. One end of the cooling pipe has a coolant inlet 104, and the other end has a coolant outlet 105. The spray assembly 2 includes a collection box 201 and a... The spray frame 203 has a filter screen 202 installed inside the collection box 201. Multiple nozzles are distributed on the inner side of the spray frame 203. A telescopic hose 207 is connected to the side of the spray frame 203. One end of the telescopic hose 207 is connected to a pump 208. A storage tank 209 is installed at the bottom of the pump 208. A water inlet pipe is installed at one end of the storage tank 209. A threaded rod 204 passes through the inside of one end of the spray frame 203. A lifting motor 205 is installed at the bottom of the threaded rod 204. A guide rod 206 passes through the inside of the other end of the spray frame 203.

[0019] In this embodiment, connecting hoses to the coolant inlet 104 and coolant outlet 105 facilitates coolant flow within the cooling pipes, thereby improving the cooling of the upper mold 101 and lower mold 103. Water is drawn from the storage tank 209 by the pump 208 and transported through the telescopic hose 207 to the spray frame 203, where it is sprayed out through multiple nozzles, effectively cooling the upper mold 101 and lower mold 103. The threaded rod 204 is electrically driven by the lifting motor 205 to rotate, further improving cooling efficiency. The spray frame 203 is raised and lowered for spraying, which increases the spraying range. The guide rod 206 provides guidance, thereby effectively cooling the upper mold 101 and the lower mold 103. The cooling effect is achieved through the combination of internal and external cooling, which facilitates rapid cooling, improves cooling efficiency, shortens the injection molding cycle, and thus improves production efficiency. The water after spraying flows into the collection box 201 through the filter screen 202, which facilitates the collection of water resources. Finally, the water is discharged through the drain pipe 210 for other uses, which helps to reduce the waste of water resources.

[0020] Example 2: As Figures 1-4 As shown, the sealing assembly 3 includes a sealing frame 301, a sealing strip 302 is provided inside the lower mold 103, a drain pipe 210 is connected to one end of the collection box 201, a valve is provided in the middle of the drain pipe 210, and an injection port 102 is connected to the top of the upper mold 101.

[0021] In this embodiment, sealing frames 301 are provided on both the upper mold 101 and the lower mold 103, which helps to increase the sealing of the connection between the upper mold 101 and the lower mold 103. The sealing strip 302 is provided on the top of the lower mold 103, which further improves the sealing of the injection cavity, thereby ensuring stable injection inside the injection cavity and improving the injection effect. The injection port 102 facilitates the flow of injection liquid into the injection cavity.

[0022] The working principle of this embodiment is as follows: During use, the injection port 102 facilitates the flow of the injection molten metal into the injection cavity. Both the upper mold 101 and the lower mold 103 are equipped with sealing frames 301, which improves the sealing of the connection between them. A sealing strip 302 on the top of the lower mold 103 further enhances the sealing of the injection cavity. After injection molding, hoses are connected to the coolant inlet 104 and coolant outlet 105 to promote coolant flow within the cooling pipes, thus facilitating the cooling of the upper mold 101 and lower mold 103. Water is drawn from the storage tank 209 by the pump 208 and transported through the telescopic hose 207 to the interior of the spray frame 203. Furthermore, the spray from multiple nozzles distributed on the spray frame 203 facilitates the spray cooling of the upper mold 101 and the lower mold 103. The lifting motor 205 electrically drives the threaded rod 204 to rotate, which in turn drives the spray frame 203 to lift and spray, thus increasing the spray range. The guide rod 206 provides guidance, thereby achieving effective cooling of the upper mold 101 and the lower mold 103. The cooling effect is achieved through the combination of internal and external cooling, which improves the cooling efficiency. The sprayed water flows into the collection box 201 through the filter screen 202, which facilitates the collection of water resources. Finally, the water is discharged through the drain pipe 210 for other uses, which helps to reduce the waste of water resources.

[0023] The cooling pipe, threaded rod 204, and lifting motor 205 in this utility model are common knowledge in the field. Their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the cooling pipe, threaded rod 204, and lifting motor 205 will not be explained in detail.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A rapid-cooling automotive interior injection mold comprising an injection mold assembly (1), characterized in that: The injection mold assembly (1) is provided with a spray assembly (2) at its bottom. The injection mold assembly (1) is provided with a sealing assembly (3) inside. The injection mold assembly (1) includes an upper mold (101) and a lower mold (103). The upper mold (101) and the lower mold (103) are both provided with cooling pipes. One end of the cooling pipe is provided with a coolant inlet (104), and the other end of the cooling pipe is provided with a coolant outlet (105). The spray assembly (2) includes a collection box (201) and a spray frame (203). The collection box (201) is provided with a filter screen (202). The inner side of the spray frame (203) is provided with multiple nozzles. The side of the spray frame (203) is connected with a telescopic hose (207), and one end of the telescopic hose (207) is connected with a pump (208).

2. The rapid-cooling automotive interior injection mold of claim 1, wherein: The sealing assembly (3) includes a sealing frame (301), and a sealing strip (302) is provided inside the lower mold (103).

3. The rapid-cooling automotive interior injection mold of claim 1, wherein: A storage tank (209) is installed at the bottom of the pump (208), and a water inlet pipe is installed at one end of the storage tank (209).

4. The rapid-cooling automotive interior injection mold of claim 1, wherein: One end of the collection box (201) is connected to a drain pipe (210), and a valve is provided in the middle of the drain pipe (210).

5. The rapid-cooling automotive interior injection mold of claim 1, wherein: A threaded rod (204) runs through one end of the spray frame (203), a lifting motor (205) is installed at the bottom of the threaded rod (204), and a guide rod (206) runs through the other end of the spray frame (203).

6. The rapid-cooling automotive interior injection mold of claim 1, wherein: The top of the upper mold (101) is connected to an injection port (102).

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