Injection mold for forming a charger housing

Abstract

The utility model discloses a kind of injection mould for charger shell forming, it is related to injection mould technical field, including upper die holder and lower die holder, be provided with injection runner system and upper die on the upper die holder, be provided with lower die on the lower die holder, lower die is provided with the die cavity for forming product on it, lower die holder is provided with the forming insert inserted in the die cavity inside, injection runner system is injected into the die cavity by passing through upper die;Lower die is also provided with the slot opening communicated with die cavity on it, plug and pre-buried plug are arranged in the slot opening, through hole matched with plug is formed on the plug;Lower die is provided with gas path groove communicated with through hole on it, upper die is provided with airway upper die communicated with gas path groove in, air pipe joint connected with airway is arranged on the outside of upper die, air current is blown into the die cavity, and gas path evenly diffuses between product periphery and die cavity inner wall from plug, to make product periphery and die cavity inner wall separate, improve stripping efficiency and product yield.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold for molding a charger shell. Background Technology

[0002] In modern manufacturing, injection molding is widely used because it can efficiently and in large quantities produce plastic products with complex shapes and high precision requirements. As the core component of the injection molding process, the structural design and performance of the injection mold directly affect product quality, production efficiency, and production costs.

[0003] In injection molding, demolding is a crucial step that directly impacts the final product quality. In the injection molding of a charger casing, the casing's shape varies at certain angles, and the product adheres closely to the mold cavity's inner wall, increasing demolding resistance and making demolding difficult. This raises the risk of product deformation or damage during demolding.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for molding a charger housing, comprising an upper mold base and a lower mold base, wherein the upper mold base is provided with an injection runner system and an upper mold core, the lower mold base is provided with a lower mold core, the lower mold core is provided with a mold cavity for molding the product, and a molding insert inserted into the mold cavity is provided on the lower mold base; the upper mold core and the lower mold core are engaged to form a closed chamber, and the injection runner system passes through the upper mold core to inject molding material into the mold cavity; The lower mold core is also provided with a slot communicating with the mold cavity. A block and a pre-embedded plug are provided inside the slot. The block is provided with a through hole that matches the plug. The plug is inserted into the through hole and docks with the molded insert. The upper surface of the lower mold core is provided with an air passage groove that communicates with the through hole. The upper mold core is provided with an air channel that communicates with the air passage groove. The air passage groove forms a closed airflow path after the upper mold core and the lower mold core are closed. An air pipe connector connected to the air channel is provided on the outside of the upper mold core.

[0007] As a further embodiment of this utility model: the upper end face of the blocking block is flush with the upper end face of the lower mold core.

[0008] As a further embodiment of this utility model: the upper end of the plug block is also provided with a plug groove that communicates with the through hole, a plug is fitted inside the plug groove, the lower end of the plug contacts the plug, and the air passage groove is connected to the plug groove.

[0009] As a further embodiment of this utility model: there is an air intake space between the inner wall of the plug groove and the side of the plug.

[0010] As a further embodiment of this utility model: the lower end of the upper mold core is provided with a mold closing groove corresponding to the lower mold core, the top wall of the mold closing groove is provided with a sealing groove that surrounds the mold cavity, and a sealing ring is embedded in the sealing groove.

[0011] As a further embodiment of this utility model: the plug is a double-ended design, and two through holes and two plug grooves are provided; The gas path is branched into two paths, which are respectively connected to two plug slots.

[0012] As a further embodiment of this utility model: the lower end of the plug is provided with pins, and the upper surface of the molded insert is provided with slots corresponding to the pins.

[0013] As a further embodiment of this utility model, the block is also provided with an injection hole that matches the injection molding flow channel system.

[0014] As a further embodiment of this utility model: the lower mold core is provided with multiple mold cavities, with each pair of mold cavities forming a group, and each mold cavity is provided with a molding insert, a plug and a connector; Each group has an air passage groove between the two mold cavities, and the air passage groove is provided with a flow channel that communicates with the two mold cavities.

[0015] Compared with the existing technology, the beneficial effects of this technical solution are as follows: During the demolding stage, the air passage of the upper mold core and the air passage groove of the lower mold core form a closed airflow path. The external air source delivers compressed air to this airflow path through the air pipe joint and enters the mold cavity through the through hole of the plug. As the airflow enters the mold cavity from the through hole, it will diffuse from the plug to the surroundings and flow evenly between the product and the inner wall of the mold cavity, thereby separating the product from the inner wall of the mold cavity, so as to facilitate the smooth demolding of the product and avoid the product from being deformed or damaged due to excessive demolding resistance, thereby improving demolding efficiency and product yield.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the upper mold core of this utility model; Figure 4 This is a schematic diagram of the structure of the lower mold core of this utility model; Figure 5 This is a cross-sectional structural diagram of the lower mold core of this utility model; Figure 6 This is a schematic diagram of the structure of the molded insert of this utility model; Figure 7 This is a schematic diagram of the structure of the blocking block of this utility model; Figure 8 yes Figure 2 Enlarged schematic diagram of a local structure at point A; Figure 9 yes Figure 4 Enlarged schematic diagram of the local structure at point B; The corresponding labels in the attached diagram are explained as follows: 1. Upper mold base; 2. Lower mold base; 3. Injection runner system; 4. Upper mold core; 41. Air passage; 42. Mold closing groove; 43. Sealing groove; 44. Sealing ring; 5. Lower mold core; 51. Mold cavity; 52. Air passage groove; 53. Groove opening; 6. Molding insert; 61. Slot; 7. Plug; 71. Through hole; 72. Plug groove; 73. Plug; 74. Air intake space; 75. Injection hole; 8. Plug; 81. Pin; 9. Air pipe connector. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-9An injection mold for molding a charger housing includes an upper mold base 1 and a lower mold base 2. The upper mold base 1 is provided with an injection runner system 3 and an upper mold core 4. The lower mold base 2 is provided with a lower mold core 5. The lower mold core 5 is provided with a mold cavity 51 for molding the product. The lower mold base 2 is provided with a molding insert 6 inserted into the mold cavity 51. The upper mold core 4 and the lower mold core 5 are engaged to form a closed cavity in the mold cavity 51. The injection runner system 3 passes through the upper mold core 4 to inject molding material into the mold cavity 51. The lower mold core 5 is also provided with a slot 53 that communicates with the mold cavity 51. The slot 53 is provided with a block 7 and a pre-embedded plug 8. The block 7 is provided with a through hole 71 that matches the plug 8. The plug 8 is inserted into the through hole 71 and docks with the molding insert 6. The upper surface of the lower mold core 5 is provided with an air passage groove 52 that communicates with the through hole 71. The upper mold core 4 is provided with an air passage 41 that communicates with the air passage groove 52. After the upper mold core 4 and the lower mold core 5 are closed, the air passage groove 52 forms a closed airflow path. The upper mold core 4 is provided with an air pipe connector 9 that connects to the air passage 41.

[0021] Specifically, during mold closing, the upper mold base 1 drives the upper mold core 4 to precisely align with the lower mold core 5 of the lower mold base 2, so that the mold cavity 51 forms a sealed chamber. The plug 7 and plug 8 inside the mold cavity 51 are perfectly matched with the molding insert 6 inside the mold cavity 51 by pre-embedding. The plug 8 is inserted into the through hole 71 of the plug 7 and aligns with the molding insert 6, so as to achieve precise positioning of the plug 8 in the mold cavity 51. At the same time, it connects with the product shell after the product molding is completed. During the injection molding stage, the molten raw material passes through the injection runner system 3 and the upper mold core 4 and continues to enter the mold cavity 51. The raw material fully fills the molded insert 6, the plug 7 and the plug 8 in the mold cavity 51, gradually forming the structural outline of the product, and then cools and solidifies. During the demolding stage, the air passage 41 of the upper mold core 4 and the air passage groove 52 of the lower mold core 5 form a closed airflow path. An external air source delivers compressed air to this airflow path through the air pipe connector 9 and enters the mold cavity 51 through the through hole 71 of the plug 73. As the airflow enters the mold cavity 51 from the through hole 71, it diffuses from the plug 8 to the surrounding area and flows evenly between the product and the inner wall of the mold cavity 51. This causes the product to separate from the inner wall of the mold cavity 51, facilitating smooth demolding and preventing the product from deforming or being damaged due to excessive demolding resistance, thereby improving demolding efficiency and product yield. After the blown film operation, the mold can be opened. After the upper mold core 4 and the lower mold core 5 are separated, the product formed inside the mold cavity 51 can be taken out. in, Figure 2 The tubular body connected to the airway connector 9 is a solid airway model. The purpose is to intuitively understand the formation and shape of the airflow path. In reality, there is no solid airway 41. The airway 41 is a hole opened in the upper mold core 4.

[0022] Based on the above embodiments, it is further proposed that the upper end face of the blocking block 7 is flush with the upper end face of the lower mold core 5. This ensures that after mold closing, the upper mold core 4 and the lower mold core 5 fit tightly together, reducing the impact of airflow leakage on the blow molding process.

[0023] Based on the above embodiments, it is further proposed that the upper end of the plug block 7 is also provided with a plug groove 72 that communicates with the through hole 71, the plug groove 72 is fitted with a plug 73, the lower end of the plug 73 contacts the plug 8, and the air passage groove 52 is connected to the plug groove 72. An air intake space 74 is provided between the inner wall of the plug groove 72 and the side of the plug 73.

[0024] Specifically, the plug 73 is designed to hold the plug 8 in place while allowing compressed gas to enter the through hole 71 and the mold cavity 51 from the plug groove 72. This prevents the plug 8 from shifting vertically during injection molding and allows airflow to pass through the gap between the contact surfaces. The plug groove 72 into which the plug 73 is embedded provides an air intake space 74, allowing air to preferentially enter the air intake space 74 and then flow into the through hole 71, rather than entering more between the plug 7 and the mold cavity 51. This increases the airflow from the plug 8 to the surrounding area of ​​the product, ensuring that the blown film effect meets expectations.

[0025] Based on the above embodiments, it is further proposed that the lower end of the upper mold core 4 is provided with a mold closing groove 42 corresponding to the lower mold core 5, and the top wall of the mold closing groove 42 is provided with a sealing groove 43 that surrounds the mold cavity 51, and a sealing ring 44 is embedded in the sealing groove 43.

[0026] Specifically, the upper mold core 4 uses the mold closing groove 42 to precisely align with the lower mold core 5 after mold closing. Then, the sealing ring 44 set in the sealing groove 43 is squeezed as the mold closes, thereby enclosing a sealed area containing the mold cavity 51, thus preventing the airflow that is delivered into the mold from leaking out, allowing the airflow to act on the mold cavity 51, and further improving the blown film effect.

[0027] Based on the above embodiments, it is further proposed that the plug 8 is a double-ended design, with two through holes 71 and two plug grooves 72; The gas channel 52 branches into two channels, which are respectively connected to the two plug channels 72.

[0028] Specifically, the multi-branch design of the air passage 52 allows the airflow to be accurately blown into the corresponding two plug slots 72, and after flowing through the two through holes 71 through the double ends of the plug 8, it diffuses evenly to the surrounding area of ​​the product.

[0029] Preferably, the lower end of the plug 8 is provided with a pin 81, and the upper surface of the molded insert 6 is provided with a slot 61 corresponding to the pin 81, so that after the product is molded, the pin 81 of the plug 8 is fixed inside the product, which facilitates wiring in subsequent assembly.

[0030] Preferably, the block 7 is also provided with an injection hole 75 that matches the injection runner system 3. Specifically, the injection hole 75 is provided between two through holes 71, that is, in the middle area of ​​the mold cavity 51. While not affecting the airflow, it allows the raw material to flow evenly in the mold cavity 51, thereby improving the quality of the product. It should be noted that the injection molding runner system 3 in this embodiment adopts conventional technical means that can be understood by those skilled in the art, and its specific structure and working principle do not need to be elaborated further, and will not be described in detail here.

[0031] Based on the above embodiments, it is further proposed that the lower mold core 5 is provided with multiple mold cavities 51, with each pair of mold cavities 51 forming a group, and each mold cavity 51 is provided with a molding insert 6, a block 7 and a plug 8; In each group, an air passage groove 52 is provided between the two mold cavities 51, and the air passage groove 52 is provided with a flow channel that communicates with the two mold cavities 51.

[0032] Specifically, during the injection molding stage, the raw material is simultaneously injected into the two mold cavities 51 of each group through the injection runner system 3 and injection holes 75, and gradually formed into a product. During blown film production, the airflow is diverted to the two mold cavities 51 of the same group through the air channel 52, and the product is separated from the inner wall of the mold cavity 51. This allows for the injection molding of multiple products in a single operation, as well as the simultaneous blown film processing of multiple products, improving production efficiency and adapting to large-scale production.

[0033] Preferably, multiple sealing grooves 43 are provided, and each sealing groove 43 surrounds the two mold cavities 51 of each group.

[0034] 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.

Claims

1. An injection mold for molding a charger housing, characterized by, The mold includes an upper mold base (1) and a lower mold base (2). The upper mold base (1) is provided with an injection runner system (3) and an upper mold core (4). The lower mold base (2) is provided with a lower mold core (5). The lower mold core (5) is provided with a mold cavity (51) for molding products. The lower mold base (2) is provided with a molding insert (6) inserted into the mold cavity (51). The upper mold core (4) and the lower mold core (5) are engaged to form a closed cavity in the mold cavity (51). The injection runner system (3) passes through the upper mold core (4) to inject plastic into the mold cavity (51). The lower mold core (5) is also provided with a slot (53) communicating with the mold cavity (51). The slot (53) is provided with a block (7) and a pre-embedded plug (8). The block (7) is provided with a through hole (71) matching the plug (8). The plug (8) is inserted into the through hole (71) and docks with the molding insert (6). The upper surface of the lower mold core (5) is provided with an air passage groove (52) that communicates with the through hole (71). The upper mold core (4) is provided with an air passage (41) that communicates with the air passage groove (52). The air passage groove (52) forms a closed airflow path after the upper mold core (4) and the lower mold core (5) are closed. The upper mold core (4) is provided with an air pipe connector (9) connected to the air passage (41) on the outside.

2. The injection mold for molding the charger housing according to claim 1, characterized in that, The upper surface of the block (7) is flush with the upper surface of the lower mold core (5).

3. The charger case molding injection mold according to claim 2, characterized by, The upper end of the plug (7) is also provided with a plug groove (72) that communicates with the through hole (71). A plug (73) is fitted inside the plug groove (72). The lower end of the plug (73) is in contact with the plug (8). The air passage groove (52) is connected to the plug groove (72).

4. The charger case molding injection mold according to claim 3, characterized by, There is an air intake space (74) between the inner wall of the plug groove (72) and the side of the plug (73).

5. The injection mold for forming a charger housing according to any one of claims 1 to 4, characterized by, The upper mold core (4) has a mold closing groove (42) at its lower end that corresponds to the lower mold core (5). The top wall of the mold closing groove (42) has a sealing groove (43) that surrounds the mold cavity (51). A sealing ring (44) is embedded in the sealing groove (43).

6. The charger case molding injection mold according to claim 5, wherein The plug (8) is a double-ended design, and two through holes (71) and two plug grooves (72) are provided. The gas passage (52) branches into two passages that are connected to two plug passages (72) respectively.

7. The charger case molding injection mold according to claim 6, characterized by, The plug (8) has a pin (81) at its lower end, and the upper surface of the molded insert (6) has a slot (61) corresponding to the pin (81).

8. The charger case molding injection mold according to claim 6, characterized by, The block (7) is also provided with an injection hole (75) that matches the injection flow channel system (3).

9. The charger case molding injection mold according to claim 5, wherein, The lower mold core (5) is provided with multiple mold cavities (51). Every two mold cavities (51) form a group, and each mold cavity (51) is provided with a molding insert (6), a block (7) and a plug (8). In each group, an air passage groove (52) is provided between the two mold cavities (51), and the air passage groove (52) is provided with a flow channel that communicates with the two mold cavities (51).

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