Lightweight mold frame structure of automobile mold
By using 3D-printed conformal cooling channels and heat-conducting inserts on the automotive mold base, the problem of uneven cooling was solved, achieving uniform and efficient cooling of the mold cavity and improving the overall performance and production efficiency of the mold.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN QIANGXU MOULD CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-05-19
AI Technical Summary
The cooling system of existing automotive mold bases suffers from uneven cooling, especially due to the unreasonable layout of cooling channels, which affects the overall performance of the mold.
The conformal cooling channels, manufactured using 3D printing technology, fit the surface of the mold cavity and are equipped with heat-conducting inserts, cooling medium distributors, temperature sensors, and flow regulating valves to achieve uniform distribution and precise control of the cooling medium.
It achieves uniform and efficient cooling of the mold cavity, reduces energy consumption and cost, and improves the cooling effect and production efficiency of the mold.
Smart Images

Figure CN224255839U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive mold technology, specifically a lightweight mold frame structure for automotive molds. Background Technology
[0002] In the automotive mold manufacturing industry, the mold base is a key structure that supports the mold cavity and core components. Its performance directly affects the molding quality, production efficiency and lifespan of the mold. As the automotive industry's demand for lightweight and efficient production continues to increase, lightweight mold base structures are gradually becoming an industry trend. However, in the design and manufacturing process of lightweight mold bases, the performance problems of the cooling system are becoming increasingly prominent, especially the problem of uneven cooling caused by unreasonable cooling channel layout, which seriously affects the overall performance of the mold.
[0003] Existing automotive mold base cooling systems typically employ traditional straight or simple curved cooling channel designs. These cooling channels are machined through drilling or milling. Due to manufacturing limitations, the cooling channels often cannot perfectly conform to the surface shape of the mold cavity, resulting in the cooling medium (such as water or oil) not being able to uniformly remove heat from the mold cavity during the flow process. To address this, we propose a lightweight automotive mold base structure. Utility Model Content
[0004] To address the problems mentioned in the background art, this utility model provides the following technical solution: a lightweight mold frame structure for automotive molds, including conformal cooling channels, which are manufactured using 3D printing technology. The conformal cooling channels conform to the surface of the mold cavity, and a heat-conducting insert is provided on the conformal cooling channels. The heat-conducting insert is embedded in the thin wall of the mold cavity, a cooling medium distributor is provided on the conformal cooling channels, and a temperature sensor is provided on the conformal cooling channels. The temperature sensor probe is connected to the mold cavity.
[0005] Preferably, the conformal cooling channel has a circular or elliptical cross-section and a diameter of 6mm-10mm to ensure smooth flow of the cooling medium, reduce flow resistance, and ensure sufficient cooling medium flow without occupying too much space.
[0006] Preferably, the conformal cooling water channel interface is provided with a connecting joint, which is a standardized quick-connect joint. The use of a standardized quick-connect joint facilitates installation and disassembly and can be quickly connected to the mold cavity.
[0007] Preferably, the conformal cooling channel is provided with a cooling medium, which is either water or oil, both of which are commonly used cooling media with good thermal conductivity and fluidity.
[0008] Preferably, each of the conformal cooling channel connections is provided with a seal, which is an O-ring or a gasket. The seal design improves the sealing performance of the cooling system and avoids leakage problems.
[0009] Preferably, the conformal cooling channel has multiple sub-channels, and each sub-channel is equipped with a flow regulating valve. The multiple sub-channels are designed according to the heat distribution of the mold cavity to ensure uniform cooling. The flow regulating valve is used to adjust the flow rate of the cooling medium in each sub-channel to achieve precise control.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] During operation, the cooling medium enters the cooling medium distributor from the external cooling equipment through pipes. The distributor distributes the cooling medium to each channel according to the heat distribution of the mold cavity. The flow rate and pressure of each channel are precisely controlled by a flow regulating valve to ensure uniform cooling. The cooling medium flows in the conformal cooling channels, absorbing heat from the mold cavity surface. The conformal cooling channels perfectly conform to the mold cavity surface, ensuring efficient heat transfer. Thermally conductive inserts further enhance local thermal conductivity, ensuring effective cooling in thin-walled areas. Temperature sensors monitor the temperature of each area of the mold cavity in real time and feed the data back to the control system. Based on the feedback data from the temperature sensors, the control system adjusts the flow regulating valves of each channel. After absorbing heat, the cooling medium flows out of the mold frame and returns to the external cooling equipment for cooling. After cooling in the external cooling equipment, the cooling medium re-enters the circulation system. By recycling the cooling medium, energy consumption and costs are reduced. The conformal cooling channels perfectly conform to the mold cavity surface, ensuring uniform cooling and achieving uniform and efficient cooling of the mold cavity. Attached Figure Description
[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0013] Figure 1 This is a front view of the overall structure of this utility model;
[0014] In the diagram: 1. Conformal cooling water channel; 2. Thermally conductive insert; 3. Cooling medium distributor; 4. Temperature sensor; 5. Connecting joint; 6. Seal. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0016] Depend on Figure 1 The present invention includes a conformal cooling channel 1, which is manufactured using 3D printing technology. The conformal cooling channel 1 is fitted to the surface of the mold cavity. A heat-conducting insert 2 is provided on the conformal cooling channel 1 and is embedded in the thin wall of the mold cavity. A cooling medium distributor 3 is provided on the conformal cooling channel 1. A temperature sensor 4 is provided on the conformal cooling channel 1 and its probe is connected to the mold cavity.
[0017] The cross-section of the conformal cooling channel 1 is circular or elliptical, and the diameter of the conformal cooling channel 1 is 6mm-10mm. This ensures smooth flow of the cooling medium and reduces flow resistance, thus guaranteeing sufficient cooling medium flow rate without taking up too much space.
[0018] The conformal cooling water channel 1 interface is equipped with a connecting joint 5, which is a standardized quick-connect joint. The use of a standardized quick-connect joint facilitates installation and disassembly and can be quickly connected to the mold cavity.
[0019] The conformal cooling channel 1 contains a cooling medium, which is either water or oil, both of which are commonly used cooling media with good thermal conductivity and fluidity.
[0020] All joints of the conformal cooling water channel 1 are equipped with seals 6, which are O-rings or gaskets. The seal design improves the sealing performance of the cooling system and avoids leakage problems.
[0021] The conformal cooling channel 1 has multiple sub-channels, each equipped with a flow regulating valve. The multiple sub-channels are designed according to the heat distribution of the mold cavity to ensure uniform cooling. The flow regulating valve is used to adjust the flow rate of the cooling medium in each sub-channel to achieve precise control.
[0022] Working Principle: During operation, the cooling medium, either water or oil, enters the cooling medium distributor 3 from the external cooling equipment through pipes. The distributor 3 distributes the cooling medium to each channel according to the heat distribution of the mold cavity. The flow rate and pressure of each channel are precisely controlled by a flow regulating valve to ensure uniform cooling. The cooling medium flows in the conformal cooling channel 1, absorbing heat from the mold cavity surface. The conformal cooling channel 1 completely conforms to the mold cavity surface, ensuring efficient heat transfer. The heat-conducting insert 2 further enhances local heat conduction performance, ensuring effective cooling in thin-walled areas. The temperature sensor 4 monitors the temperature of each area of the mold cavity in real time and feeds the data back to the control system. Based on the feedback data from the temperature sensor 4, the control system adjusts the flow regulating valves of each channel. After absorbing heat, the cooling medium flows out of the mold frame and returns to the external cooling equipment for cooling. After cooling in the external cooling equipment, the cooling medium re-enters the circulation system. By recycling the cooling medium, energy consumption and costs are reduced. Complete conformity to the mold cavity surface ensures uniform cooling, achieving uniform and efficient cooling of the mold cavity.
[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0024] 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 lightweight mold frame structure for an automobile mold, characterized by: The application relates to a cooling water channel (1) which is manufactured by adopting a 3D printing technology, is attached to a mold cavity surface, is provided with a heat-conducting inlay block (2) and is provided with a cooling medium distributor (3) and a temperature sensor (4).
2. The automotive mold lightweight mold frame structure of claim 1, wherein: The cross section of the cooling water channel (1) is circular or elliptical, and the diameter of the cooling water channel (1) is 6-10 mm.
3. The automotive mold lightweight mold frame structure of claim 2, wherein: The interface of the cooling water channel (1) is provided with a connecting joint (5) which is a standardized quick plug joint.
4. The automotive mold lightweight mold frame structure of claim 3, wherein: The cooling water channel (1) is provided with a cooling medium which is water or oil.
5. The automotive mold lightweight mold frame structure of claim 4, wherein: The connecting position of the cooling water channel (1) is provided with a sealing element (6) which is an O-shaped ring or a sealing gasket.
6. The automotive mold lightweight mold frame structure of claim 5, wherein: The cooling water channel (1) has multiple branch water channels which are provided with flow regulating valves.