A sealing enhanced injection molding machine water drain
By designing an injection molding machine water distributor with internal threads and a high-performance fluororubber sealing ring, the problem of poor adaptability of traditional water distributors has been solved. This enables rapid installation and stable sealing of multi-specification connections, improving the cooling efficiency of the injection molding machine and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN YUEDU MOLD HARDWARE CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-26
Smart Images

Figure CN224408380U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary equipment for injection molding machines, and in particular to a water distribution drain for injection molding machines with enhanced sealing performance. Background Technology
[0002] Injection molding machines are the most widely used processing machinery in the manufacturing industry. Not only can a large number of products be directly produced by injection molding machines, but they are also key equipment in the injection stretch blow molding process. Injection molding machines typically consist of an injection system, a mold clamping system, a hydraulic transmission system, an electrical control system, a lubrication system, a heating and cooling system, etc. Water distribution systems are mainly used in the cooling system of injection molding machines to ensure that the cooling medium (usually water or coolant) can be stably, efficiently and leak-free distributed to the mold and other parts that need to be cooled.
[0003] Water distribution drains are mainly used in injection molding production to distribute and control cooling water (or other heat transfer media). By connecting the cooling water channels of the mold, they usually need to be connected to water channel connectors of various specifications. Traditional water distribution drains have some shortcomings: the connection port lacks standardized internal threads or has a single thread specification, making it difficult to install different types of connectors. Additional adapters need to be processed, which increases costs and can easily lead to loose connections, resulting in poor adaptability. To address these issues, we propose a sealing-enhanced injection molding machine water distribution drain. Utility Model Content
[0004] The purpose of this invention is to provide a water distribution system for injection molding machines with enhanced sealing performance, in order 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 sealing-enhanced injection molding machine water distribution drain includes a water distribution drain body, the water distribution drain body having two water distribution cavities inside, each water distribution cavity having internal threads on its inner walls at both ends, each water distribution cavity having a sealing element inside, the water distribution drain body having two top positioning holes on its upper surface, and the water distribution drain body having two bottom positioning holes on its bottom surface.
[0007] In a further embodiment, the two top positioning holes and the two bottom positioning holes are located on the same axis.
[0008] In a further embodiment, a through groove is provided on the outer surface of the main body of the water distribution drain, and a reinforcing frame is fixedly connected to the inner wall of the through groove.
[0009] In a further embodiment, each of the water-dividing cavities has rounded corners at its edges, and each of the seals uses a high-performance fluororubber sealing ring.
[0010] In a further embodiment, the upper surface of the water distribution drain body is provided with two sets of connection ports, each connection port is provided with a valve pipe inside, and each valve pipe is provided with a valve on its outer surface.
[0011] In a further embodiment, a sealing plug is provided at one end of each valve tube.
[0012] In a further embodiment, the two sets of valves are two different colors, and the interior of each of the water-dividing cavities is a smooth surface.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This device allows for direct matching of connectors of different specifications via the internal threads at both ends of the water distribution cavity, eliminating the need for additional adapters. This solves the problems of traditional water distribution systems having limited thread compatibility and poor fit. Whether connecting thin water pipes, such as those in the precision cooling water circuit of a mold, or thick water pipes, such as those in the main cooling circuit, the internal threads enable quick installation, adapting to the multi-channel and multi-specification connection needs of injection molding machines. This shortens equipment debugging time, allows for internal thread compatibility with multiple connectors, and improves installation flexibility. The high-performance fluororubber sealing rings, which mate with the internal threads, create a tight seal between the threads and the inner wall of the water distribution cavity when the connector is tightened. This forms a double seal—a threaded seal and a reinforced sealing ring—resisting the impact of high-pressure water flow and avoiding the problems of easy aging and leakage associated with traditional ordinary rubber rings. Stable sealing ensures uniform flow of cooling water in the mold, maintains a constant mold temperature, and reduces product defects caused by leakage. Attached Figure Description
[0015] Figure 1 A frontal three-dimensional structural diagram of the water distribution drain of a sealing-enhanced injection molding machine;
[0016] Figure 2 A bottom view of the main body of the water distribution drain in a sealing-enhanced injection molding machine;
[0017] Figure 3 This is a top view of the main body of the water distribution drain in a sealing-enhanced injection molding machine.
[0018] Figure 4 A front view schematic diagram of the water distribution drain of a sealing-enhanced injection molding machine;
[0019] Figure 5 For enhanced sealing of injection molding machine water distribution and drainage Figure 4 Enlarged schematic diagram of the structure at point A in the middle.
[0020] In the diagram: 1. Main body of the water distribution drain; 2. Water distribution cavity; 3. Internal thread; 4. Through groove; 5. Top positioning hole; 6. Bottom positioning hole; 7. Connection port; 8. Valve pipe; 9. Sealing plug; 10. Valve; 11. Rounded corner; 12. Reinforcing frame; 13. Sealing element. Detailed Implementation
[0021] 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.
[0022] Please see Figures 1-5 In this utility model, a sealing-enhanced injection molding machine water distribution drain includes a water distribution drain body 1. The water distribution drain body 1 has two water distribution cavities 2 inside. The inner walls at both ends of each water distribution cavity 2 are provided with internal threads 3. Each water distribution cavity 2 is provided with a sealing element 13. The upper surface of the water distribution drain body 1 has two top positioning holes 5, and the bottom surface of the water distribution drain body 1 has two bottom positioning holes 6. The two water distribution cavities 2 are not fused together, and their middle parts are smooth. The internal threads 3 are adapted to different connectors. The sealing element 13 enhances the seal. The water distribution cavities 2 realize water distribution, provide a basis for multi-specification connection and water leakage prevention, eliminate the need to replace the water distribution drain, and reduce mold change time.
[0023] Two top positioning holes 5 and two bottom positioning holes 6 are located on the same axis, and the top positioning holes 5 and bottom positioning holes 6 correspond one-to-one. The device can be fastened by tightening screws, which facilitates fixing the water distributor to the injection molding machine frame. The bolts pass through the positioning holes for vertical fixation, preventing the water distributor from tilting during installation. The outer surface of the water distributor body 1 has a through groove 4, and the inner wall of the through groove 4 is fixedly connected to a reinforcing frame 12. The through groove 4 reduces the weight of the water distributor and facilitates handling and installation without affecting its strength. The reinforcing frame 12 enhances the structural strength of the through groove 4 and ensures the structural stability for long-term use. Each water distribution cavity 2 has a rounded corner 11 at its edge, and each seal 13 uses a high-performance fluororubber sealing ring. The rounded corner 11 prevents the sharp edges of the water distribution cavity 2 from scratching the seal 13. The high-performance fluororubber sealing ring is resistant to high pressure and aging, and is suitable for the high pressure and long-term use of the injection molding machine's cooling water circuit, solving the problems of easy wear, aging and leakage of traditional ordinary rubber rings.
[0024] The upper surface of the main body 1 of the water distribution channel has two sets of connection ports 7. Each connection port 7 has a valve pipe 8 inside, and each valve pipe 8 has a valve 10 on its outer surface. The two sets of connection ports 7 can connect to multiple sets of mold water circuits, such as the moving mold and fixed mold cooling water circuits of the same mold. The valve 10 can control the opening and closing of each set of water circuits individually. Each valve pipe 8 has a sealing plug 9 at one end, which can seal unused connection ports 7 to prevent water leakage or dust from entering unused interfaces and affecting subsequent use. The two sets of valves 10 use two different colors. The interior of each water distribution cavity 2 is smooth. The two different colored valves 10 make it easy to quickly distinguish between the two sets of water circuits. For example, red corresponds to the high temperature zone water circuit and blue corresponds to the low temperature zone water circuit, reducing operational errors. The smooth surface of the water distribution cavity 2 reduces water flow resistance, allowing the cooling medium to flow quickly and improving the mold cooling efficiency.
[0025] The working principle of this utility model is as follows:
[0026] When connecting cooling water channels of different specifications to a new mold, different connectors can be directly installed using the internal thread 3 of the main body 1 of the water distribution tube. It can match the thin water pipe joint and the thick water pipe valve without the need for adapters. Moreover, after the connection, the sealing part 13 fits tightly after the joint is tightened, so there is no need to replace the water distribution tube, reducing the mold change time. There is no water leakage under high pressure cooling water, the mold temperature is stable, and the product has no shrinkage marks.
[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A water distribution system for an injection molding machine with enhanced sealing performance, characterized in that: The system includes a water distribution body (1), which has two water distribution cavities (2) inside. Each water distribution cavity (2) has an internal thread (3) on the inner wall at both ends. Each water distribution cavity (2) has a sealing element (13) inside. The upper surface of the water distribution body (1) has two top positioning holes (5), and the bottom surface of the water distribution body (1) has two bottom positioning holes (6).
2. The water distribution system for an injection molding machine with enhanced sealing as described in claim 1, characterized in that: The two top positioning holes (5) and the two bottom positioning holes (6) are located on the same axis.
3. The water distribution system for an injection molding machine with enhanced sealing as described in claim 1, characterized in that: The outer surface of the main body (1) of the water distribution outlet is provided with a through groove (4), and a reinforcing frame (12) is fixedly connected to the inner wall of the through groove (4).
4. A water distribution system for an injection molding machine with enhanced sealing as described in claim 1, characterized in that: Each of the water-dividing cavities (2) has a rounded corner (11) at its edge, and each of the seals (13) uses a high-performance fluororubber sealing ring.
5. A water distribution system for an injection molding machine with enhanced sealing as described in claim 1, characterized in that: The upper surface of the main body (1) of the water distribution outlet is provided with two sets of connection ports (7), each of the connection ports (7) is provided with a valve pipe (8), and each of the valve pipes (8) is provided with a valve (10) on its outer surface.
6. A water distribution system for an injection molding machine with enhanced sealing as described in claim 5, characterized in that: Each valve tube (8) is provided with a sealing plug (9) at one end.
7. A water distribution system for an injection molding machine with enhanced sealing as described in claim 5, characterized in that: The two sets of valves (10) are in two different colors, and the interior of each of the water-dividing cavities (2) is a smooth surface.