Waterway of injection molding pipe fitting mold

Abstract

The utility model discloses a water path of injection molding pipe fitting mould, including cavity water path and core water path, cavity water path includes cavity water inlet path, cavity water outlet path and annular water path, annular water path is provided in the upper mould frame, annular water path both ends are connected with cavity water inlet path and cavity water outlet path respectively, the cavity water inlet path is connected with the cavity water inlet path, and the core water path is connected with the cavity water inlet path. The annular water path surrounds the periphery of the cavity, and the distances from the annular water path to the wall of the cavity are equal. The mold core waterway is communicated with the interior of the mold core, and the mold core is fixed on the lower mold frame. A cavity insert is arranged on the upper die frame, the annular water way is arranged on the cavity insert, a sealing groove is formed in the upper end face of the cavity insert, and a sealing ring is arranged in the sealing groove. According to the utility model, the cavity insert with the waterway is arranged outside the product cavity, and the waterway is designed into a surrounding type and is equally spaced from the product, so that the temperature of the inner wall of the product is consistent, the cooling is uniform, and the buckling deformation of the product caused by non-uniformity is avoided.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a water channel for an injection molded pipe fitting. Background Technology

[0002] In injection molding of pipe fittings, the cooling stage is the most crucial phase, accounting for approximately 60% to 70% of the entire process. To ensure product quality, the mold temperature control system must guarantee uniform mold temperature, eliminating localized overcooling or overheating. For large-diameter pipe fitting molds, due to the thick walls, long cooling times, and significant shrinkage and warping issues, the quality of the mold's cooling system design is paramount. Existing cooling system designs, using straight-through, series, and parallel connections, fail to achieve effective cooling, resulting in poor product quality. Therefore, a comprehensive cooling system design must be developed, tailored to the shape and number of channels to ensure uniform wall thickness and achieve optimal cooling, guaranteeing both product quality and efficiency. Utility Model Content

[0003] To address the aforementioned problems, this utility model aims to provide a water channel for injection molding pipe fittings to solve the issues of uneven cooling and shrinkage / warping in injection molded products.

[0004] The technical problem solved by this utility model can be achieved by the following technical solution: a water channel for an injection molding pipe fitting mold, including a cavity water channel and a core water channel. The cavity water channel includes a cavity inlet water channel, a cavity outlet water channel and an annular water channel. The annular water channel is arranged inside the upper mold frame. The two ends of the annular water channel are respectively connected to the cavity inlet water channel and the cavity outlet water channel. The annular water channel surrounds the cavity. The core water channel connects to the inside of the core. The core is fixed on the lower mold frame.

[0005] The upper mold frame is provided with a cavity insert, and the annular water channel is provided on the cavity insert.

[0006] The upper end face of the cavity insert is provided with a sealing groove, and a sealing ring is provided in the sealing groove.

[0007] A water channel sealing plate is provided above the upper mold frame, and the water channel sealing plate is located at the top of the annular water channel.

[0008] The annular water channel is equidistant from the cavity wall.

[0009] The core water circuit includes a water baffle, a core water inlet circuit, and a core water outlet circuit. A cooling cavity is provided on the core, and a water baffle is provided inside the cooling cavity. The water baffle divides the cooling cavity into two parts, and the inner ends of the two parts are connected to each other. The two parts are respectively connected to the core water inlet circuit and the core water outlet circuit.

[0010] Compared with the prior art, the present invention has the following advantages: The present invention provides a cavity insert with water channels outside the product cavity, and the water channels are designed to be circumferential and evenly spaced from the product, ensuring that the inner wall temperature of the product is consistent and the cooling is uniform, and that uneven cooling will not cause product warping or deformation. The core is provided with water channels, which can be used for cooling the inner side of the product. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the cavity water inlet channel of this utility model;

[0012] Figure 2 This is a schematic diagram of the core water inlet channel of this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the core and cavity insert of this utility model;

[0014] Figure 4 A schematic diagram of the sealing structure at the upper part of the annular waterway;

[0015] Figure 5 This is a schematic diagram of the structure of an injection molding pipe fitting mold;

[0016] In the diagram: 1-Product; 2-Annular water channel; 3-Cavity water inlet channel; 4-Cavity water outlet channel; 5-Cavity insert; 6-Core; 7-Sealing groove; 8-Water channel sealing plate; 9-Upper mold frame; 10-Sealing ring; 11-Lower mold frame; 12-Water barrier; 13-Core water inlet channel; 14-Core water outlet channel. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0018] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Combined with appendix Figures 1 to 5As shown, this embodiment discloses a water channel for an injection molding pipe fitting mold, including a cavity water channel and a core water channel. The cavity water channel includes a cavity inlet water channel 3, a cavity outlet water channel 4, and an annular water channel 2. The annular water channel 2 is disposed inside the upper mold frame 9. The two ends of the annular water channel 2 are respectively connected to the cavity inlet water channel 3 and the cavity outlet water channel 4. The annular water channel 2 surrounds the cavity, and the distance from the annular water channel 2 to the cavity wall is equal.

[0020] A cavity insert 5 is provided on the upper mold frame 9, and the annular water channel 2 is provided on the cavity insert 5, with the cavity insert 5 located outside the cavity. A sealing groove 7 is provided on the upper end face of the cavity insert 5, and a sealing ring 10 is provided within the sealing groove 7. A water channel sealing plate 8 is provided above the upper mold frame 9, with the water channel sealing plate 8 located at the top of the annular water channel 2, and the sealing ring 10 located below the water channel sealing plate 8. Figure 1 As shown, two cavity inserts 5 can be connected together as a group for water inlet and outlet.

[0021] The core water channel connects to the interior of the core 6, which is fixed to the lower mold frame 11. The core water channel includes a water-blocking plate 12, a core water inlet channel 13, and a core water outlet channel 14. A cooling cavity is provided on the core 6, and the water-blocking plate 12 is installed inside the cooling cavity, dividing it into two parts. The inner ends of the two parts are interconnected, and the two parts are respectively connected to the core water inlet channel 13 and the core water outlet channel 14. Figure 2 As shown, four cores can be connected as a group to allow water to flow in and out.

[0022] This invention features a cavity insert with water channels outside the product cavity. The water channels are designed to be circular and evenly spaced from the product, ensuring consistent inner wall temperature and uniform cooling. This prevents uneven cooling that could cause product warping or deformation. The core also has water channels for cooling the inner side of the product.

[0023] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the utility model. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A water system for an injection molding pipe fitting mold, comprising a cavity water system and a core water system, characterized in that: The cavity water passage includes a cavity water inlet passage (3), a cavity water outlet passage (4), and an annular water passage (2). The annular water passage (2) is located inside the upper mold frame (9). The two ends of the annular water passage (2) are connected to the cavity water inlet passage (3) and the cavity water outlet passage (4) respectively. The annular water passage (2) surrounds the cavity. The core water passage connects to the inside of the core (6). The core (6) is fixed on the lower mold frame (11).

2. The water channel of an injection molding pipe fitting mold according to claim 1, characterized in that: The upper mold frame (9) is provided with a cavity insert (5), and the annular water channel (2) is provided on the cavity insert (5).

3. The water channel of an injection molding pipe fitting mold according to claim 2, characterized in that: The upper end face of the cavity insert (5) is provided with a sealing groove (7), and a sealing ring (10) is provided in the sealing groove (7).

4. The water channel of an injection molding pipe fitting mold according to claim 1, characterized in that: A water channel sealing plate (8) is provided above the upper mold frame (9), and the water channel sealing plate (8) is located at the top of the annular water channel (2).

5. The water channel of an injection molding pipe fitting mold according to claim 1, characterized in that: The annular water channel (2) is equidistant from the cavity wall.

6. The water channel of an injection molding pipe fitting mold according to claim 1, characterized in that: The core water passage includes a water baffle (12), a core water inlet passage (13), and a core water outlet passage (14). The core (6) is provided with a cooling cavity, and the cooling cavity is provided with a water baffle (12). The water baffle (12) divides the cooling cavity into two parts, and the inner ends of the two parts of the cavity are connected to each other. The two parts of the cavity are respectively connected to the core water inlet passage (13) and the core water outlet passage (14).

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