Mold with gradient cooling runner structure

By setting auxiliary cooling mechanisms and S-shaped guide channel structures with temperature-conducting bases and temperature-conducting end caps on both sides of the mold bottom, the problem of insufficient external cooling of the mold core is solved, improving the cooling efficiency and temperature stability of the mold, and enhancing the molding efficiency and product quality.

CN224296447UActive Publication Date: 2026-05-29DONGGUAN YUZHEXIN HARDWARE PLASTIC PROD CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN YUZHEXIN HARDWARE PLASTIC PROD CO LTD
Filing Date
2025-06-26
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing mold cooling structures are mainly concentrated inside the mold mounting plate and inserts, lacking targeted design for external mold core cooling, resulting in excessively high mold core surface temperature, which affects mold forming efficiency and product quality.

Method used

Auxiliary cooling mechanisms are set on both sides of the bottom mold, including a main water inlet pipe, a main water outlet pipe, and a cooling component. The cooling component consists of a temperature-conducting base and a temperature-conducting end cap. It achieves efficient cooling of the outside of the mold core through an S-shaped guide channel, uses pure copper material to accelerate heat conduction, and prevents coolant leakage through a sealing ring.

Benefits of technology

It achieves efficient cooling of the mold core exterior, reduces the surface temperature of the mold core, improves the overall cooling efficiency and uniformity of the mold, and ensures temperature stability during mold operation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224296447U_ABST
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Abstract

The utility model relates to mould technical field, concretely is mould with gradient cooling runner structure, including bottom die and upper die, is equipped with mould frame and mould core on the bottom die, is equipped with auxiliary cooling mechanism on the bottom die, auxiliary cooling mechanism includes main water inlet pipe, water outlet pipe and a plurality of cooling components, and cooling component includes temperature -sensing base and temperature -sensing end cover, is equipped with first guide runner on temperature -sensing base, is seted up second guide runner on temperature -sensing end cover, and is connected with water inlet fixed pipe and water outlet fixed pipe on temperature -sensing end cover. The mould with gradient cooling runner structure, through setting auxiliary cooling mechanism on the both sides of bottom die, and make cooling component's temperature -sensing base directly with mould core side surface and be pasted together, through the cooling path formed by first guide runner and second guide runner, and cooling medium can quickly take away the heat outside mould core, can cool to mould core outside, make up the defect that mould core outside cooling layout is missing in the prior art, reduce mould core surface temperature.
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Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a mold with a gradient cooling channel structure. Background Technology

[0002] Utility model patent CN213618189U discloses a thin-walled mold cooling structure, which includes a front mold mounting plate and a rear mold mounting plate. The rear end of the front mold mounting plate and the front end of the rear mold mounting plate are respectively provided with a front mold core and a rear mold core, forming a mold cavity between the front mold core and the rear mold core. A front mold insert is provided at the rear end of the front mold core, and a rear mold insert is provided at the front end of the rear mold core. A first cooling coil with reciprocating bending is provided inside the rear mold mounting plate. The first cooling coil is located inside the mold cavity, and the direction of the first cooling coil is consistent with the shape of the mold cavity. A second cooling pipe is provided inside the front mold core. The second cooling pipe includes an annular cooling pipe, multiple sets of vertical cooling pipes, and a baffle plate. A third cooling pipe is provided inside the front mold insert. The third cooling pipe includes multiple sets of cooling horizontal pipes connected end to end and arranged along the radial direction of the front mold insert.

[0003] The cooling structure of this thin-walled mold primarily concentrates its cooling within the mold mounting plate and inserts, such as the first cooling coil in the rear mold mounting plate, the second cooling pipe in the front mold core, and the third cooling pipe in the front mold insert. It lacks targeted design for cooling the exterior of the mold core. As a critical component in mold forming, the inability to effectively dissipate external heat leads to excessively high surface temperatures, impacting molding efficiency and product quality. Therefore, we propose a mold with a gradient cooling channel structure. Utility Model Content

[0004] The purpose of this invention is to provide a mold with a gradient cooling channel structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mold with a gradient cooling channel structure includes a bottom mold and an upper mold disposed at the top of the bottom mold. The bottom mold is provided with a mold frame, and a mold core is embedded in the mold frame. Auxiliary cooling mechanisms are provided on both the left and right end faces of the bottom mold. The auxiliary cooling mechanisms include a main water inlet pipe for introducing cold water, a main water outlet pipe for discharging hot water, and several cooling components connected between the main water inlet pipe and the main water outlet pipe.

[0007] The cooling assembly includes a temperature-conducting base that fits into the mold core and a temperature-conducting end cap mounted on the outer end face of the temperature-conducting base. A first flow channel is formed on the outer end face of the temperature-conducting base, and a second flow channel with the same shape as the first flow channel is formed on the inner end face of the temperature-conducting end cap. A water inlet fixed pipe and a water outlet fixed pipe are connected to the temperature-conducting end cap. The water inlet fixed pipe is connected to the first end of the second flow channel, and the water outlet fixed pipe is connected to the end of the second flow channel.

[0008] Preferably, the outer surface of the mold frame is provided with a plurality of through holes for mounting cooling components, the ends of the through holes extending into the interior of the mold frame and being blocked by the mold core;

[0009] In this setup, the through-holes provide a precise mounting path for the cooling components, ensuring a tight fit between the cooling components and the mold core.

[0010] Preferably, the main water inlet pipe is connected to a plurality of water inlet branch pipes, and the water inlet branch pipes are connected to the water inlet fixed pipe;

[0011] In this setup, the inlet branch pipes enable the cooling water to be diverted, ensuring that the cold water is evenly distributed to each cooling component.

[0012] Preferably, the main water outlet pipe is connected to a plurality of water outlet branch pipes, and the water outlet branch pipes are connected to the water outlet fixed pipe;

[0013] In this setup, the outlet branch pipes quickly collect hot water from each cooling component, ensuring that hot water is discharged.

[0014] Preferably, the first end of the main outlet pipe is provided with a first pipe joint for connecting to an external cold water inlet pipe, and the last end of the main outlet pipe is provided with a second pipe joint for connecting to a hot water outlet pipe.

[0015] In this configuration, the first and second pipe connectors facilitate quick connection to external pipes, enabling rapid assembly and maintenance of the cooling system.

[0016] Preferably, both the temperature-conducting base and the temperature-conducting end cap are made of pure copper, the first flow channel and the second flow channel are both S-shaped, and a sealing ring is sandwiched between the temperature-conducting base and the temperature-conducting end cap;

[0017] In this design, pure copper accelerates heat transfer, the S-shaped flow channel extends the heat exchange path, and the sealing ring prevents coolant leakage.

[0018] Preferably, the outer end face of the temperature-conducting end cap is provided with a protruding abutment, and a plurality of baffles are installed on the mold frame. The baffles cover the outer side of the cooling component, and a clamping bolt is threaded onto the baffle. The end of the clamping bolt abuts against the abutment.

[0019] In this configuration, the abutment, cover, and clamping bolt work together to secure the cooling assembly, ensuring a stable contact between the cooling assembly and the mold core.

[0020] Preferably, the cover is provided with a pair of clearance slots, and the ends of the water inlet fixed pipe and the water outlet fixed pipe pass through the two clearance slots respectively;

[0021] In this setup, the anti-cavity groove avoids installation interference and ensures a secure connection between the inlet and outlet water pipes.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This mold with a gradient cooling channel structure, by setting auxiliary cooling mechanisms on both sides of the bottom mold and making the heat-conducting base of the cooling component directly fit against the side surface of the mold core, allows the cooling medium to quickly remove heat from the outside of the mold core through the cooling path formed by the first and second guide channels. This enables cooling of the outside of the mold core, making up for the lack of external cooling layout in the prior art and reducing the surface temperature of the mold core. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the bottom mold structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the auxiliary cooling mechanism in this utility model;

[0027] Figure 4 This is an exploded view of the cooling component in this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the temperature-conducting end cap in this utility model;

[0029] Figure 6 This is an exploded view of the cover in this utility model;

[0030] The meanings of the labels in the diagram are as follows:

[0031] 100. Bottom mold; 110. Mold frame; 111. Mold core; 120. Through hole;

[0032] 200. Upper mold;

[0033] 300. Auxiliary cooling mechanism; 310. Main water inlet pipe; 311. Water inlet branch pipe; 312. First pipe joint; 320. Main water outlet pipe; 321. Water outlet branch pipe; 322. Second pipe joint; 330. Cooling assembly; 331. Temperature-conducting base; 3311. First guide channel; 332. Temperature-conducting end cap; 3321. Second guide channel; 3322. Water inlet fixed pipe; 3323. Water outlet fixed pipe; 3324. Support column; 333. Sealing ring; 340. Cover; 341. Tightening bolt; 342. Void groove. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0035] Please see Figures 1-6 A mold with a gradient cooling channel structure includes a bottom mold 100 and an upper mold 200 set at the top of the bottom mold 100. A mold frame 110 is provided on the bottom mold 100, and a mold core 111 is embedded in the mold frame 110. Auxiliary cooling mechanisms 300 are provided on both the left and right end faces of the bottom mold 100. The auxiliary cooling mechanism 300 includes a main water inlet pipe 310 for introducing cold water, a main water outlet pipe 320 for discharging hot water, and several cooling components 330 connected between the main water inlet pipe 310 and the main water outlet pipe 320. By providing auxiliary cooling mechanisms 300 on both sides of the bottom mold 100, the mold core 111 can be cooled in a targeted manner from the outside of the mold, which makes up for the defects of insufficient external cooling of the mold core in traditional mold cooling structures and improves the overall cooling efficiency and uniformity of the mold.

[0036] like Figure 2 As shown, in this utility model, a plurality of through holes 120 for installing cooling components 330 are provided on the outer surface of the mold frame 110. The ends of the through holes 120 extend into the interior of the mold frame 110 and are blocked by the mold core 111. The through holes 120 provide a channel for the installation of the cooling components 330, so that the cooling components 330 can fit tightly against the mold core 111, ensuring that the cooling medium is in full contact with the mold core 111 and effectively transferring heat.

[0037] like Figures 3-5As shown, specifically, the cooling assembly 330 includes a temperature-conducting base 331 that fits against the mold core 111 and a temperature-conducting end cap 332 mounted on the outer end face of the temperature-conducting base 331. A first flow channel 3311 is formed on the outer end face of the temperature-conducting base 331, and a second flow channel 3321 with the same shape as the first flow channel 3311 is formed on the inner end face of the temperature-conducting end cap 332. Both the temperature-conducting base 331 and the temperature-conducting end cap 332 are made of pure copper, which has excellent thermal conductivity and can quickly conduct heat from the mold core 111. Both the first flow channel 3311 and the second flow channel 3321 are S-shaped. The S-shaped flow channels extend the flow path of the cooling medium, increasing the contact time and heat exchange area between the cooling medium and the mold. A sealing ring 333 is sandwiched between the temperature-conducting base 331 and the temperature-conducting end cap 332. The sealing ring 333 ensures that the cooling assembly 330 is well-sealed, preventing leakage of the cooling medium and ensuring stable cooling operation.

[0038] like Figures 3-5 As shown, furthermore, the temperature-conducting end cap 332 is connected to an inlet fixed pipe 3322 and an outlet fixed pipe 3323. The inlet fixed pipe 3322 is connected to the beginning of the second guide channel 3321, and the outlet fixed pipe 3323 is connected to the end of the second guide channel 3321. Several inlet branch pipes 311 are connected to the main inlet pipe 310, and the inlet branch pipes 311 are connected to the inlet fixed pipe 3322. Several outlet branch pipes 321 are connected to the main outlet pipe 320, and the outlet branch pipes 321 are connected to the outlet fixed pipe 3323. The beginning of the main outlet pipe 320 is provided with a first pipe joint 312 for connecting to an external cold water inlet pipe, and the end of the main outlet pipe 320 is provided with a second pipe joint 322 for connecting to a hot water outlet pipe. The main water inlet pipe 310, water inlet branch pipe 311, water inlet fixed pipe 3322, and main water outlet pipe 320, water outlet branch pipe 321, and water outlet fixed pipe 3323 constitute a complete cooling medium circulation channel. The first pipe joint 312 and the second pipe joint 322 facilitate connection with external pipes to ensure stable circulation of the cooling medium and continuously provide cooling capacity for the mold.

[0039] like Figures 4-6 As shown, in addition, a protruding abutment 3324 is provided on the outer end face of the temperature-conducting end cap 332. Several baffles 340 are installed on the mold frame 110. The baffles 340 cover the outside of the cooling assembly 330. A clamping bolt 341 is threadedly connected to the baffle 340. The end of the clamping bolt 341 abuts against the abutment 3324. By tightening the clamping bolt 341, the end of the clamping bolt 341 can be tightly pressed against the abutment 3324, so that the temperature-conducting base 331 on the cooling assembly 330 can always be in contact with the mold core 111, ensuring that the cooling assembly 330 remains stable during the mold operation and will not loosen due to vibration or other factors.

[0040] like Figure 6As shown, it should be added that a pair of clearance grooves 342 are provided on the cover 340. The ends of the water inlet fixed pipe 3322 and the water outlet fixed pipe 3323 pass through the two clearance grooves 342 respectively. The clearance grooves 342 provide clearance space for the water inlet fixed pipe 3322 and the water outlet fixed pipe 3323, so as to avoid squeezing or obstructing the pipes when the cover 340 is installed.

[0041] In this embodiment, the mold with a gradient cooling channel structure is used as follows: First, the main water inlet pipe 310 is connected to the external cold water inlet pipe through the first pipe joint 312. The cold water is diverted from the main water inlet pipe 310 to each water inlet branch pipe 311, and then flows into the water inlet fixed pipe 3322 of the cooling assembly 330. Then, the cold water enters the S-shaped first guide channel 3311 and the second guide channel 3321 formed by the temperature-conducting base 331 and the temperature-conducting end cap 332. During the flow, the cold water absorbs the heat transferred from the mold core 111 to the temperature-conducting base 331, completing the heat exchange. Next, the hot water after absorbing heat is collected into the main water outlet pipe 320 through the outlet fixed pipe 3323 and the outlet branch pipe 321. Finally, the hot water is discharged through the hot water discharge pipe connected by the second pipe joint 322. This cycle is repeated to achieve auxiliary cooling of the outside of the mold core and ensure the temperature stability of the mold during operation.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mold with a gradient cooling channel structure, comprising a bottom mold (100) and an upper mold (200) disposed at the top of the bottom mold (100), wherein a mold frame (110) is provided on the bottom mold (100), and a mold core (111) is embedded in the mold frame (110), characterized in that: The bottom mold (100) is provided with auxiliary cooling mechanisms (300) on both the left and right end faces. The auxiliary cooling mechanism (300) includes a main water inlet pipe (310) for introducing cold water, a main water outlet pipe (320) for discharging hot water, and a number of cooling components (330) connected between the main water inlet pipe (310) and the main water outlet pipe (320). The cooling assembly (330) includes a temperature-conducting base (331) that fits against the mold core (111) and a temperature-conducting end cap (332) installed on the outer end face of the temperature-conducting base (331). A first flow channel (3311) is provided on the outer end face of the temperature-conducting base (331), and a second flow channel (3321) with the same shape as the first flow channel (3311) is provided on the inner end face of the temperature-conducting end cap (332). A water inlet fixing pipe (3322) and a water outlet fixing pipe (3323) are connected to the temperature-conducting end cap (332). The first end of the water inlet fixing pipe (3322) and the second flow channel (3321) are connected, and the end of the water outlet fixing pipe (3323) and the second flow channel (3321) are connected.

2. The mold with gradient cooling channel structure according to claim 1, characterized in that: The outer surface of the mold frame (110) is provided with a plurality of through holes (120) for installing cooling components (330). The ends of the through holes (120) extend into the interior of the mold frame (110) and are blocked by the mold core (111).

3. The mold with gradient cooling channel structure according to claim 1, characterized in that: The main water inlet pipe (310) is connected to several water inlet branch pipes (311), and the water inlet branch pipes (311) are connected to the water inlet fixed pipe (3322).

4. The mold with gradient cooling channel structure according to claim 1, characterized in that: The main outlet pipe (320) is connected to several outlet branch pipes (321), and the outlet branch pipes (321) are connected to the outlet fixed pipe (3323).

5. The mold with a gradient cooling channel structure according to claim 1, characterized in that: The first end of the main outlet pipe (320) is provided with a first pipe joint (312) for connecting to an external cold water inlet pipe, and the end of the main outlet pipe (320) is provided with a second pipe joint (322) for connecting to a hot water discharge pipe.

6. The mold with gradient cooling channel structure according to claim 1, characterized in that: The temperature-conducting base (331) and the temperature-conducting end cap (332) are both made of pure copper. The first flow channel (3311) and the second flow channel (3321) are both S-shaped. A sealing ring (333) is sandwiched between the temperature-conducting base (331) and the temperature-conducting end cap (332).

7. The mold with gradient cooling channel structure according to claim 1, characterized in that: The outer end face of the heat-conducting end cap (332) is provided with a protruding abutment (3324). Several baffles (340) are installed on the mold frame (110). The baffles (340) cover the outside of the cooling assembly (330). A clamping bolt (341) is threaded on the baffle (340). The end of the clamping bolt (341) abuts against the abutment (3324).

8. The mold with gradient cooling channel structure according to claim 7, characterized in that: The cover (340) has a pair of clearance slots (342), and the ends of the water inlet fixed pipe (3322) and the water outlet fixed pipe (3323) pass through the two clearance slots (342) respectively.