Special insert for hand pump cover assembly hole applied to filter seat injection mold

Abstract

The utility model is applicable to the technical field of injection mold cooling structures, and particularly relates to a special insert for a hand pump cover assembly hole applied to a filter seat injection mold, which comprises a filter seat, the hand pump cover assembly hole is arranged on the surface of the filter seat, and a hand pump cover assembly hole insert is embedded in the hand pump cover assembly hole. An exhaust groove assembly is arranged on the surface of the hand pump cover assembly hole insert, an annular installation groove is formed in the surface of the hand pump cover assembly hole insert, and a cooling water way assembly is jointly arranged in the annular installation groove and the hand pump cover assembly hole insert. According to the utility model, the annular cooling water channel assembly is arranged in the hand pump cover assembly hole insert, and the water isolation blocks are adopted to divide the hand pump cover assembly hole insert into a plurality of water channel channels connected in series, so that cooling liquid continuously flows along a preset path, and uniform distribution of mold temperature is realized. According to the structure, the local temperature difference of the mold is effectively reduced, the defects of air trapping, swelling and the like caused by uneven temperature are avoided, and the surface quality and the size stability of an injection molding product are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold cooling structure technology, specifically a special insert for the assembly hole of the hand pump cover in a filter seat injection mold. Background Technology

[0002] In injection mold cooling systems, the effectiveness of temperature control for localized areas of the product directly impacts the appearance quality and dimensional stability of the molded parts. Existing molds often incorporate annular or drilled channels within inserts as cooling water paths. While simple in structure and easy to manufacture, this approach struggles to achieve efficient and uniform cooling control in space-constrained or complex-shaped areas. This is particularly true for inserts with assembly functions, such as the pump cover mounting holes in filter seats. Due to their enclosed structure, uneven wall thickness, and significant heat accumulation, traditional cooling methods often fail to maintain temperature uniformity across the entire area.

[0003] In current practical applications, some mold designs still employ unidirectional or symmetrical water flow designs, lacking specificity in water channel layout. This results in short water flow paths and small heat exchange areas, leading to insufficient localized heat dissipation as the coolant spends too little time in certain areas. To enhance cooling, some designs introduce annular water channels, but without proper flow channel isolation, allowing the coolant to flow along the shortest path, causing uneven temperature distribution. This structure is particularly prominent at the assembly hole location of the hand pump cover, often resulting in bulges, weld lines, or uneven gloss after molding, severely affecting product appearance and assembly accuracy. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a special insert for the assembly hole of the hand pump cover in the filter seat injection mold, which aims to solve the technical problems mentioned in the background art.

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

[0006] A special insert for a hand pump cover assembly hole in a filter seat injection mold includes a filter seat, and the surface of the filter seat is provided with a hand pump cover assembly hole. A hand pump cover assembly hole insert is embedded inside the hand pump cover assembly hole. The surface of the hand pump cover assembly hole insert is provided with an exhaust groove assembly. The surface of the hand pump cover assembly hole insert is provided with an annular mounting groove. The annular mounting groove and the interior of the hand pump cover assembly hole insert are jointly provided with a cooling water channel assembly.

[0007] The cooling water circuit assembly includes a first arc-shaped water pipe, a second arc-shaped water pipe, and a third arc-shaped water pipe, and the first arc-shaped water pipe, the second arc-shaped water pipe, and the third arc-shaped water pipe are all arranged inside the annular mounting groove. The surface of the first arc-shaped water pipe is connected to a first connecting water pipe and a second connecting water pipe, and the end of the first connecting water pipe away from the first arc-shaped water pipe is connected to a water inlet pipe.

[0008] The surface of the second arc-shaped water pipe is connected to a third connecting water pipe and a fourth connecting water pipe;

[0009] The surface of the third arc-shaped water pipe is connected to a fifth connecting water pipe and a sixth connecting water pipe, and the end of the sixth connecting water pipe away from the third arc-shaped water pipe is connected to a drain pipe.

[0010] Furthermore, the end of the third connecting water pipe furthest from the second arc-shaped water pipe is connected to the second connecting water pipe, and the end of the fourth connecting water pipe furthest from the second arc-shaped water pipe is connected to the end of the fifth connecting water pipe furthest from the third arc-shaped water pipe.

[0011] Furthermore, the exhaust groove assembly includes an annular exhaust groove, and the annular exhaust groove is formed on the surface of the hand pump cover mounting hole insert. Several primary exhaust grooves are formed on the surface of the hand pump cover mounting hole insert near the annular exhaust groove, and several secondary exhaust grooves are formed on the surface of the hand pump cover mounting hole insert.

[0012] Furthermore, the primary exhaust channels and the secondary exhaust channels are all connected to the interior of the annular exhaust channel.

[0013] This utility model provides a special insert for the assembly hole of a hand pump cover in a filter seat injection mold, which has the following beneficial effects:

[0014] This invention achieves uniform mold temperature distribution by incorporating a ring-shaped cooling water channel assembly within the mounting hole insert of the hand pump cover and using a water-separating block to divide multiple series-connected water channels. This allows the coolant to flow continuously along a pre-defined path. This structure effectively reduces localized temperature differences in the mold, preventing defects such as air entrapment and bulging caused by uneven temperature, and significantly improving the surface quality and dimensional stability of injection-molded products. Furthermore, the compact and clearly defined cooling water channel layout facilitates manufacturing and maintenance, enhancing the reliability and cooling efficiency of mold operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a special insert for the assembly hole of a hand pump cover used in filter seat injection molds.

[0016] Figure 2 This is a schematic diagram showing the filter base and the hand pump cover mounting hole insert in a separated state.

[0017] Figure 3 This is a schematic diagram of a cooling water circuit assembly used in a special insert for the assembly hole of a hand pump cover in a filter seat injection mold.

[0018] Figure 4This is a schematic diagram of the structure of a hand pump cover assembly hole insert used in a filter seat injection mold, and the venting groove assembly provided on the hand pump cover assembly hole insert.

[0019] In the diagram: 1. Filter base; 2. Hand pump cover mounting hole insert;

[0020] 3. Cooling water circuit components; 31. Inlet pipe; 32. First connecting water pipe; 33. First arc-shaped water pipe; 34. Second connecting water pipe; 35. Third connecting water pipe; 36. Second arc-shaped water pipe; 37. Fourth connecting water pipe; 38. Fifth connecting water pipe; 39. Third arc-shaped water pipe; 310. Sixth connecting water pipe; 311. Drain pipe;

[0021] 4. Exhaust channel assembly; 41. Annular exhaust channel; 42. Primary exhaust channel; 43. Secondary exhaust channel;

[0022] 5. Hand pump cover mounting hole; 6. Annular mounting groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] like Figures 1-3 As shown in the figure, the present utility model provides a special insert for the hand pump cover assembly hole of a filter seat injection mold, including a filter seat 1, and a hand pump cover assembly hole 5 is provided on the surface of the filter seat 1. A hand pump cover assembly hole insert 2 is embedded in the hand pump cover assembly hole 5. An annular mounting groove 6 is provided on the surface of the hand pump cover assembly hole insert 2, and a cooling water circuit assembly 3 is provided in both the annular mounting groove 6 and the interior of the hand pump cover assembly hole insert 2.

[0026] The cooling water circuit assembly 3 includes a first arc-shaped water pipe 33, a second arc-shaped water pipe 36, and a third arc-shaped water pipe 39. The first arc-shaped water pipe 33, the second arc-shaped water pipe 36, and the third arc-shaped water pipe 39 are all disposed inside the annular mounting groove 6. The surface of the first arc-shaped water pipe 33 is connected to a first connecting water pipe 32 and a second connecting water pipe 34. The end of the first connecting water pipe 32 away from the first arc-shaped water pipe 33 is connected to an inlet pipe 31.

[0027] The surface of the second arc-shaped water pipe 36 is connected to the third connecting water pipe 35 and the fourth connecting water pipe 37.

[0028] The surface of the third arc-shaped water pipe 39 is connected to the fifth connecting water pipe 38 and the sixth connecting water pipe 310, and the end of the sixth connecting water pipe 310 away from the third arc-shaped water pipe 39 is connected to the drain pipe 311. The end of the third connecting water pipe 35 away from the second arc-shaped water pipe 36 is connected to the second connecting water pipe 34, and the end of the fourth connecting water pipe 37 away from the second arc-shaped water pipe 36 is connected to the end of the fifth connecting water pipe 38 away from the third arc-shaped water pipe 39.

[0029] In one embodiment of this utility model, the interior of the hand pump cover mounting hole insert 2 is pre-set with through-hole and groove structures for installing the cooling water circuit assembly 3, for precisely embedding each set of cooling channels. Specifically, the first arc-shaped water pipe 33, the second arc-shaped water pipe 36, and the third arc-shaped water pipe 39 are sequentially installed in the annular mounting groove 6. Each arc-shaped water pipe is physically separated by a water-blocking block, making the three sets of water circuits independent of each other, forming a series loop, effectively avoiding coolant short circuits or local temperature fluctuations. The water-blocking block is fixed by welding to ensure its stability and sealing performance under high temperature and high pressure injection molding environment.

[0030] The cooling water circuit assembly has an inlet pipe 31 at the inlet end and a drain pipe 311 at the outlet end, forming a closed continuous loop. After being injected through the inlet pipe 31, the coolant flows sequentially through the first connecting water pipe 32 into the first arc-shaped water pipe 33, then through the second connecting water pipe 34 and the third connecting water pipe 35 into the second arc-shaped water pipe 36, and then through the fourth connecting water pipe 37 and the fifth connecting water pipe 38 into the third arc-shaped water pipe 39. Finally, it flows through the sixth connecting water pipe 310 into the drain pipe 311 and is discharged outside the mold. This cooling path is a continuous ring structure, with each arc-shaped water pipe connected sequentially by connecting water pipes. The coolant flow path is stable and the direction is clear, effectively achieving uniform temperature control throughout the entire area of ​​the hand pump cover mounting hole insert 2.

[0031] This design achieves three-stage zoned cooling, ensuring that the coolant fully absorbs heat and maintains stable temperature control as it flows through each set of arc-shaped water pipes. Uniform cooling is achieved through a ring-shaped arrangement of inserts for the hand pump cover assembly holes, significantly reducing localized temperature differences on the mold surface. Combined with a well-designed water channel, the mold temperature in the hand pump cover assembly area can be controlled within a fluctuation range of 5°C. This greatly improves molding defects such as air entrapment and bulging caused by uneven mold temperature in traditional injection molding processes, enhancing the appearance quality and assembly consistency of the finished product from the source. The compact structure and rational flow direction provide strong cooling support for the stable injection molding of high-precision porous filter seats.

[0032] like Figure 1 , Figure 3 and Figure 4As shown, in one embodiment of this utility model, an exhaust groove assembly 4 is provided on the surface of the hand pump cover mounting hole insert 2. The exhaust groove assembly 4 includes an annular exhaust groove 41, which is formed on the surface of the hand pump cover mounting hole insert 2. A plurality of primary exhaust grooves 42 are formed on the surface of the hand pump cover mounting hole insert 2 near the annular exhaust groove 41, and a plurality of secondary exhaust grooves 43 are formed on the surface of the hand pump cover mounting hole insert 2. The plurality of primary exhaust grooves 42 and the plurality of secondary exhaust grooves 43 are all connected to the interior of the annular exhaust groove 41.

[0033] In this embodiment, several primary venting channels 42 are square in shape and evenly distributed in the lower region of the annular mounting groove 6, near the end of the injection molding molten material filling position, to facilitate the priority reception of gas generated and accumulated during the injection molding process. The primary venting channels 42 are connected to the annular venting channel 41, forming a primary gas collection path. The secondary venting channel 43 is a long strip structure, with one end connected to the interior of the annular venting channel 41 and the other end extending through to the outer edge region of the hand pump cover mounting hole insert 2, used to efficiently exhaust the accumulated gas to the external environment of the mold.

[0034] During injection molding, as the molten plastic fills the mold cavity, the entrained air is first guided to the primary venting channel 42, then flows along the channel into the annular venting channel 41 to form a concentrated collection, and finally is discharged in a timely manner through several secondary venting channels 43 connected to it. This venting path adopts a hierarchical interconnected structure, realizing smooth conduction from local air trapping points to the peripheral venting ports, effectively avoiding defects such as bulges, weld lines, and silver streaks caused by gas retention, improving mold venting efficiency and the appearance consistency and structural integrity of the injection molded product.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special insert for a hand pump cover assembly hole in a filter seat injection mold, comprising a filter seat (1), wherein the surface of the filter seat (1) is provided with a hand pump cover assembly hole (5), and a hand pump cover assembly hole insert (2) is embedded inside the hand pump cover assembly hole (5), characterized in that, The surface of the hand pump cover mounting hole insert (2) is provided with an exhaust groove assembly (4), and the surface of the hand pump cover mounting hole insert (2) is provided with an annular mounting groove (6), and the annular mounting groove (6) and the interior of the hand pump cover mounting hole insert (2) are jointly provided with a cooling water circuit assembly (3). The cooling water circuit assembly (3) includes a first arc-shaped water pipe (33), a second arc-shaped water pipe (36) and a third arc-shaped water pipe (39), and the first arc-shaped water pipe (33), the second arc-shaped water pipe (36) and the third arc-shaped water pipe (39) are all arranged inside the annular mounting groove (6). The surface of the first arc-shaped water pipe (33) is connected to a first connecting water pipe (32) and a second connecting water pipe (34), and the end of the first connecting water pipe (32) away from the first arc-shaped water pipe (33) is connected to an inlet pipe (31). The surface of the second arc-shaped water pipe (36) is connected to a third connecting water pipe (35) and a fourth connecting water pipe (37); The surface of the third arc-shaped water pipe (39) is connected to the fifth connecting water pipe (38) and the sixth connecting water pipe (310), and the end of the sixth connecting water pipe (310) away from the third arc-shaped water pipe (39) is connected to the drain pipe (311).

2. The special insert for the assembly hole of the hand pump cover in a filter seat injection mold according to claim 1, characterized in that, The end of the third connecting water pipe (35) away from the second arc-shaped water pipe (36) is connected to the second connecting water pipe (34), and the end of the fourth connecting water pipe (37) away from the second arc-shaped water pipe (36) is connected to the end of the fifth connecting water pipe (38) away from the third arc-shaped water pipe (39).

3. The insert for the assembly hole of the hand pump cover in a filter seat injection mold according to claim 1, characterized in that, The exhaust groove assembly (4) includes an annular exhaust groove (41), and the annular exhaust groove (41) is formed on the surface of the hand pump cover mounting hole insert (2). Several primary exhaust grooves (42) are formed on the surface of the hand pump cover mounting hole insert (2) near the annular exhaust groove (41), and several secondary exhaust grooves (43) are formed on the surface of the hand pump cover mounting hole insert (2).

4. A special insert for the assembly hole of a hand pump cover in a filter seat injection mold according to claim 3, characterized in that, Several primary exhaust channels (42) and several secondary exhaust channels (43) are connected to the interior of the annular exhaust channel (41).

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