Water cooling mechanism for injection mold
By using a mounting assembly of sealing balls and limit springs in the water cooling system of injection molds, quick connection and disassembly are achieved, solving the problems of cumbersome water cooling connections and easy leakage, and improving operating efficiency and equipment stability.
Patent Information
- Application Number
- CN202522062184.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-25
AI Technical Summary
Existing water-cooled connection methods for injection molds are cumbersome to operate, prone to leakage, and affect efficiency and cause environmental pollution.
The installation and quick-release components, which combine a sealing ball and a limit spring, enable rapid connection and disconnection of the delivery pipe and the circulation pipe. The sealing ball seals the port of the connecting pipe to ensure a tight connection.
It improves the operational efficiency of water-cooled connections, prevents water leakage, reduces maintenance costs and equipment downtime, and ensures cooling effect and production continuity.
Smart Images
Figure CN224675465U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection mold technology, specifically to a water cooling mechanism for injection molds. Background Technology
[0002] Injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into the mold cavity under high pressure by an injection molding machine, and then cooling and solidifying it to obtain the molded product. In order to achieve rapid cooling of the plastic parts, injection molds are generally equipped with corresponding built-in circulating water cooling mechanisms.
[0003] Referring to the patent document: Patent Publication No. CN222681678U, Patent Publication Date 2025-03-28, a water-cooling mechanism for injection molds is disclosed, which solves the problem that current water-cooling mechanisms for injection molds are not easy to disassemble according to usage needs, thus affecting usage efficiency. It includes a base, with a mold body connected to the upper end of the base, and a water-cooling component connected to one side of the upper end of the base. In this invention, a delivery pipe is inserted into the inner side of a connecting pipe, and a sealing cover is fitted onto the outer side of the connecting pipe. Rotating the sealing cover causes the locking plate to abut against the locking groove. Rotating the screw seals the delivery pipe and connecting pipe for a sealed and fixed connection. When disassembly is required, rotating the screw to one side moves the moving plate, causing the insertion rod to move, thus decoupling the locking plate from the fixing ring. Rotating the sealing ring to one side pulls the delivery pipe, further decoupling it from the connecting pipe. This facilitates quick disassembly and assembly of the water-cooling component according to usage needs, improving usage efficiency.
[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found: Most existing injection molds use water cooling for temperature control, which involves creating a cooling water circulation tank inside the mold and connecting it to an external cooling water source to form a circulation loop. However, the existing connection methods between the external water pipes and the mold cooling water circuit mostly use direct threaded connections or quick-connect fittings. In practical applications, these connections are cumbersome to operate, have low installation efficiency, and when disassembling the pipes, the residual cooling water in the mold water tank is very easy to leak from the interface, which not only wastes water resources but also pollutes the working environment and affects the cleaning and maintenance of equipment.
[0005] Therefore, this utility model provides a water cooling mechanism for injection molds. Utility Model Content
[0006] In order to solve the problems of cumbersome operation and easy leakage in the existing water cooling connection method of injection mold, the purpose of this utility model is to provide a water cooling mechanism for injection mold.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a water-cooling mechanism for injection molds, comprising a lower mold, an upper mold for cooperation with the lower mold, and multiple equally spaced circulation pipes installed on both sides of the lower mold. These circulation pipes are interconnected with a cooling water tank within the mold. A water-cooling mechanism is provided on one side of each circulation pipe for quickly connecting an external cooling water delivery pipe to the circulation pipe. The water-cooling mechanism includes: The mounting assembly includes a connecting pipe disposed on one side of the circulation pipe, a sealing ball in the middle of one side of the connecting pipe, a limit spring fixedly installed in the middle of one side of the sealing ball, an mounting sleeve on the outside of the connecting pipe, a conveying pipe on one side of the connecting pipe, the mounting sleeve being threaded onto the outside of one end of the conveying pipe, and a top block being fixedly installed at one end of the conveying pipe. A quick-release assembly, located on one side of the delivery pipe, is used for quick disassembly of the pipe.
[0008] Preferably, one end of the circulation pipe is provided with a threaded groove on the outer side, and the connecting pipe is threadedly installed at one end of the circulation pipe through the threaded groove.
[0009] Preferably, two symmetrically distributed guide blocks are fixedly installed on one inner wall of the conveying pipe, and two symmetrically distributed guide grooves are opened on the outer side of the connecting pipe, with both guide blocks slidably locked inside the guide grooves.
[0010] Preferably, a groove is provided in the middle of one side of the sealing ball, and one end of the top block is engaged inside the groove.
[0011] Preferably, a guide frame is fixedly installed on the middle of one side of the connecting pipe, one end of the guide frame abuts against the middle of one side of the circulation pipe, and the other end of the limiting spring is fixedly installed on one side of the guide frame.
[0012] Preferably, one side of the sealing ball is slidably engaged with one side of the guide frame, and multiple evenly distributed water channels are provided on the outer side of the sealing ball.
[0013] Beneficial effects This invention provides a water-cooling mechanism for injection molds. Compared with the prior art, it has the following advantages: 1. When connecting the external cooling water source to the cooling circulation system of the mold, the operator aligns the front end of the delivery pipe with the connecting pipe. As the delivery pipe is inserted, the top block pushes the sealing ball to overcome the elastic force of the limiting spring and move into the connecting pipe, thereby opening the port of the connecting pipe and allowing the cooling water to flow through. Then, the mounting sleeve is screwed on to engage with the external thread at the end of the delivery pipe, firmly connecting the two. This allows the connection operation of the cooling mechanism to be completed in a short time, greatly improving work efficiency. In addition, during disassembly, the sealing ball, under the action of the limiting spring, can tightly seal the port of the connecting pipe, ensuring the sealing of the connection and avoiding water leakage. This ensures the stable operation of the cooling system and improves the cooling effect of the entire injection mold water cooling mechanism.
[0014] 2. When it is necessary to repair or replace internal parts such as the sealing ball and limit spring inside the coupling pipe, the coupling pipe can be unscrewed from the circulation pipe using the threaded groove. This allows for convenient and quick maintenance of internal parts when problems occur in the coupling pipe, effectively reducing maintenance costs and equipment downtime. This significantly improves the maintenance efficiency and ease of use of the injection mold water cooling mechanism, ensuring the continuity and efficiency of production operations. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the structure of the water-cooling mechanism after disassembly in this utility model.
[0017] Figure 3 This is a cross-sectional structural diagram of the water-cooling mechanism of this utility model.
[0018] Figure 4 This is a schematic diagram of the guide frame structure of this utility model.
[0019] In the diagram: 1. Lower mold; 11. Upper mold; 2. Water cooling mechanism; 21. Mounting assembly; 211. Conveying pipe; 2111. Guide block; 2112. Guide groove; 2113. Top block; 2114. Slot; 212. Circulation pipe; 213. Connecting pipe; 214. Mounting sleeve; 215. Sealing ball; 216. Water channel; 217. Limit spring; 218. Guide frame; 22. Quick release assembly; 221. Threaded groove. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-4 This utility model provides a technical solution: a water-cooling mechanism for an injection mold, including a lower mold 1, an upper mold 11 for mutual cooperation is installed on the upper part of the lower mold 1, the upper mold 11 and the lower mold 1 are closed to form an injection cavity for molding plastic parts, multiple equally spaced circulation pipes 212 are installed on both sides of the lower mold 1, the multiple circulation pipes 212 are interconnected with the cooling circulating water tank in the mold, and a water-cooling mechanism 2 is provided on one side of each of the multiple circulation pipes 212 for quickly connecting the external cooling water delivery pipe 211 to the circulation pipe 212, the water-cooling mechanism 2 includes: The mounting assembly 21 includes a connecting pipe 213 disposed on one side of the circulation pipe 212. A sealing ball 215 is provided in the middle of one side of the connecting pipe 213. A limit spring 217 is fixedly installed in the middle of one side of the sealing ball 215. The sealing ball 215 is made of nitrile rubber. Under the force of the limit spring 217 on the sealing ball 215, the connecting pipe 213 can be blocked in a non-connected state (when the delivery pipe 211 and the circulation pipe 212 are not connected). To prevent leakage of residual cooling water inside the mold, an installation sleeve 214 is fitted on the outer side of the connecting pipe 213, and a conveying pipe 211 is fitted on one side of the connecting pipe 213. The installation sleeve 214 is threaded onto the outer side of one end of the conveying pipe 211. After the conveying pipe 211 is fitted onto one side of the connecting pipe 213, the installation sleeve 214 is moved closer to the conveying pipe 211 and rotated to thread the installation sleeve 214 onto the outer surface of the conveying pipe 211, thereby fixing the conveying pipe 211 and completing the connection. A top block 2113 is fixedly installed at one end of the conveying pipe 211. During connection, the top block 2113 will push the sealing ball 215 to move towards the inner side of the connecting pipe 213, thereby opening the seal of the connecting pipe 213, allowing the conveying pipe 211 to communicate with the circulation pipe 212, so that the circulating water can circulate. The quick-release assembly 22 is located on one side of the delivery pipe 211 and is used for quick disassembly of the connecting pipe 213.
[0022] The outer side of one end of the circulation pipe 212 is provided with a threaded groove 221. The connecting pipe 213 is threadedly installed on one end of the circulation pipe 212 through the threaded groove 221. By threading the connecting pipe 213 on one end of the circulation pipe 212, it can be easily disassembled, so that the internal components such as the sealing ball 215 and the limit spring 217 can be repaired and replaced conveniently and quickly.
[0023] Two symmetrically distributed guide blocks 2111 are fixedly installed on one inner wall of the conveying pipe 211, and two symmetrically distributed guide grooves 2112 are opened on the outer side of the connecting pipe 213. Both guide blocks 2111 are slidably locked inside the guide grooves 2112. The arrangement of the guide blocks 2111 and the guide grooves 2112 can guide and limit the conveying pipe 211, so that after it is fixed by the thread of the mounting sleeve 214, it can be connected without rotation, thus making the connection and installation more efficient and faster.
[0024] A slot 2114 is provided in the middle of one side of the sealing ball 215. One end of the top block 2113 is locked inside the slot 2114. By locking the top block 2113 into the slot 2114, the top block 2113 can stabilize the position of the sealing ball 215.
[0025] A guide frame 218 is fixedly installed on the middle of one side of the connecting pipe 213. One end of the guide frame 218 abuts against the middle of one side of the circulation pipe 212. The other end of the limiting spring 217 is fixedly installed on one side of the guide frame 218 to form a structural skeleton inside the connecting pipe 213 and to guide the sealing ball 215, making its movement more stable, thereby ensuring a better sealing effect with the end of the connecting pipe 213.
[0026] One side of the sealing ball 215 is slidably mounted on one side of the guide frame 218. Multiple evenly distributed water channels 216 are provided on the outer side of the sealing ball 215. The water channels 216 are used to allow the circulating water to flow to the other side through the water channels 216.
[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0028] During operation, when connecting an external cooling water source to the mold's cooling circulation system, the operator aligns the opening at the front end of the delivery pipe 211 with the connecting pipe 213. The two guide blocks 2111 on the inner wall of the delivery pipe 211 are aligned with the guide groove 2112 on the outer side of the connecting pipe 213 and inserted, ensuring that the delivery pipe 211 connects with the connecting pipe 213 at the correct angle and orientation. Simultaneously, the limiting mechanism prevents rotation of the delivery pipe 211. As the delivery pipe 211 continues to be inserted, the top block 2113 fixed at its end begins to contact and press against the sealing ball 215. The end of the top block 2113 embeds into the groove 2114 in the middle of the sealing ball 215, ensuring effective transmission of the thrust. The thrust applied by the top block 2113 overcomes the elasticity of the limiting spring 217, pushing... The sealing ball 215 moves steadily along the guide frame 218 into the connecting pipe 213, thereby clearing the port of the connecting pipe 213 that was originally blocked. After the conveying pipe 211 is fully inserted, the mounting sleeve 214 on the connecting pipe 213 is screwed toward the conveying pipe 211, so that it engages with the external thread at the end of the conveying pipe 211 and is tightened, thereby firmly connecting the conveying pipe 211 and the connecting pipe 213 into a whole. At this time, cooling water flows in from the conveying pipe 211 and enters the interior of the connecting pipe 213 through the opened port. The water flow then flows through the multiple water channels 216 on the outer periphery of the sealing ball 215 and smoothly enters the circulation pipe 212, and finally flows into the cooling circulation water tank inside the mold. After completing the heat exchange, it flows out from the other side, achieving efficient cooling circulation. When disconnection is required, first unscrew the mounting sleeve 214 in the opposite direction to separate it from the delivery pipe 211. Once the delivery pipe 211 is pulled outward, the pressure of the top block 2113 on the sealing ball 215 disappears, and the compressed limit spring 217 immediately releases its elasticity, pushing the sealing ball 215 back to its stable position along the guide frame 218 towards the port of the connecting pipe 213. Under the action of the limit spring 217, the sealing ball 215 is tightly pressed against the inside of the port of the connecting pipe 213, thereby blocking the circulation pipe 212. This effectively prevents residual cooling water in the mold cooling circulation water tank from leaking from the port of the connecting pipe 213, keeping the working environment clean and dry, and avoiding water waste. If internal parts such as the sealing ball 215 or the limiting spring 217 need to be replaced, the entire connecting pipe 213 can be unscrewed from the circulation pipe 212 using the threaded groove 221 at the end of the circulation pipe 212, making maintenance simple and quick.
[0029] 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 a process, method, article, or apparatus.
[0030] 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 water-cooling mechanism for an injection mold, comprising a lower mold (1), characterized in that: The lower mold (1) is equipped with an upper mold (11) for mutual use. Multiple equally spaced circulation pipes (212) are installed on both sides of the lower mold (1). The multiple circulation pipes (212) are interconnected with the cooling circulating water tank in the mold. A water cooling mechanism (2) is provided on one side of each of the multiple circulation pipes (212) for quickly connecting the external cooling water delivery pipe (211) to the circulation pipe (212). The water cooling mechanism (2) includes: The mounting assembly (21) includes a connecting pipe (213) disposed on one side of the circulation pipe (212). A sealing ball (215) is provided in the middle of one side of the connecting pipe (213). A limit spring (217) is fixedly installed in the middle of one side of the sealing ball (215). An mounting sleeve (214) is sleeved on the outside of the connecting pipe (213). A conveying pipe (211) is sleeved on one side of the connecting pipe (213). The mounting sleeve (214) is threaded onto the outside of one end of the conveying pipe (211). A top block (2113) is fixedly installed at one end of the conveying pipe (211). A quick-release assembly (22) is provided on one side of the delivery pipe (211) for quick disassembly of the connecting pipe (213).
2. The water-cooling mechanism for injection molds according to claim 1, characterized in that: The outer side of one end of the circulation pipe (212) is provided with a threaded groove (221), and the connecting pipe (213) is threadedly installed on one end of the circulation pipe (212) through the threaded groove (221).
3. The water-cooling mechanism for injection molds according to claim 1, characterized in that: Two symmetrically distributed guide blocks (2111) are fixedly installed on one side of the inner wall of the conveying pipe (211), and two symmetrically distributed guide grooves (2112) are opened on the outer side of the connecting pipe (213). The two guide blocks (2111) are slidably locked inside the guide grooves (2112).
4. The water-cooling mechanism for injection molds according to claim 1, characterized in that: A slot (2114) is provided in the middle of one side of the sealing ball (215), and one end of the top block (2113) is locked inside the slot (2114).
5. The water-cooling mechanism for injection molds according to claim 1, characterized in that: A guide frame (218) is fixedly installed on the middle of one side of the connecting pipe (213). One end of the guide frame (218) abuts against the middle of one side of the circulation pipe (212), and the other end of the limiting spring (217) is fixedly installed on one side of the guide frame (218).
6. The water-cooling mechanism for an injection mold according to claim 1, characterized in that: One side of the sealing ball (215) is slidably locked onto one side of the guide frame (218), and multiple evenly distributed water channels (216) are opened on the outer side of the sealing ball (215).
Citation Information
Patent Citations
Water cooling mechanism of injection mold
CN222681678U