Charger shell injection mold

Abstract

The charger shell injection mold comprises a movable mold body, a fixed mold body and a demolding ejection mechanism, the fixed mold body is arranged below the movable mold body, inner mold cores are arranged on the face, close to the movable mold body, of the fixed mold body in a protruding mode, the two opposite sides of each inner mold core are each provided with a core pulling mechanism, and the movable mold body is used for driving the two core pulling mechanisms to be closed or separated; cavities are formed between the two groups of core pulling mechanisms and the inner mold core and between the movable mold and the inner mold core, the demolding ejection mechanism comprises an ejector pin, an ejection block, a guide piece, a guide hole and an assembly groove, the assembly groove is formed in the top surface of the inner mold core, the ejection block is placed in the assembly groove, the guide hole is formed in the assembly groove, and the ejection block is placed in the guide hole. The upper end of the guide piece is connected with the ejector block, the guide piece is arranged in the guide hole in a telescopic mode, the ejector pin movably penetrates through the inner mold core, the free end of the ejector pin is located below the ejector block, and the problems that a two-hole or multi-hole charger shell is difficult to demold, and demolding time is long are solved.

Description

Technical Field

[0001] The present application relates to the field of molds, and in particular, to an injection mold for a charger housing. Background Art

[0002] With the gradual increase in the usage frequency of electronic products, the charging of electronic products has become more frequent, and people's requirements for chargers have also become higher and higher. First of all, people hope that while power banks are becoming more and more compact and portable, they also hope that the charger heads can be applicable to more types of electronic products at the same time. In the past, a wire harness was usually fixed at the output end of the charger, so it was only applicable to charge electronic products that matched the wire harness connector. In order to be applicable to more electronic products, more manufacturers set two female heads with different interfaces on the back of the charger for the charging cable to be plugged in, so that the charger can be adapted to more charging cables. Users can use the applicable charging cable to plug into the charger according to the interface requirements of the electronic product to be charged, thereby realizing the function that the charger can be applicable to the charging of more types of electronic products at the same time.

[0003] With the above changes in the charger, the structure of the charger housing has also changed accordingly. The charger housing that originally only fixedly connected a wire harness only needed to open a round hole on the back to meet the assembly requirements. The charger housing with the changed structure needs to open two square holes on the back for the charging cable connector to be plugged in, which greatly increases the demolding difficulty of the charger housing after injection molding. At the same time, the increase in the demolding difficulty of the charger housing also increases the time required for single-mode injection molding, resulting in a decrease in the injection molding efficiency of the charger housing. Summary of the Invention

[0004] In order to overcome the problems of difficult demolding and long demolding time for two-hole or multi-hole charger housings, the present application provides an injection mold for a charger housing.

[0005] An injection mold for a charger housing provided by the present application adopts the following technical solutions:

[0006] An injection mold for a charger housing includes:

[0007] A moving mold;

[0008] A fixed mold, arranged below the moving mold. The surface of the fixed mold close to the moving mold is convexly provided with inner cores. A set of core-pulling mechanisms are respectively arranged on both opposite sides of each inner core. The moving mold is used to drive the two sets of core-pulling mechanisms to close or separate. After mold closing, a cavity is formed between the two sets of core-pulling mechanisms and the inner cores, and between the moving mold and the inner cores.

[0009] The demolding and ejection mechanism includes ejector pins, ejector blocks, guiding members, guiding holes, and assembly grooves. The assembly grooves are formed on the top surface of the inner core. The ejector blocks are placed in the assembly grooves. The guiding holes are formed in the assembly grooves. The upper end of the guiding member is connected to the ejector block, and the guiding member is telescopically arranged in the guiding hole. The ejector pins are movably inserted through the inner core, and the free ends of the ejector pins are located below the ejector blocks.

[0010] Among them, the stationary mold includes a bottom plate, a mounting plate arranged above the bottom plate, and a connecting plate connected between the bottom plate and the mounting plate. The demolding and ejection mechanism further includes a buffer assembly. The buffer assembly includes a guiding column, a compression spring, and an ejection plate. The ejection plate is placed between the bottom plate and the mounting plate. One end of the guiding column is connected to the bottom plate, and the other end passes through the ejection plate and is connected to the mounting plate. The compression spring is clamped between the mounting plate and the ejection plate. The ejector pins are fixed to the ejection plate.

[0011] Among them, the central axis of the guiding hole is parallel to the moving direction of the ejector pin, and the moving direction of the ejector pin is perpendicular to the upper surface of the ejector block.

[0012] Among them, the core-pulling mechanism includes a slider and an inclined guide post. The slider is slidably arranged on the mounting plate. One end of the inclined guide post is fixed to the moving mold. The slider is provided with an inclined guide hole that cooperates with the inclined guide post.

[0013] Among them, the core-pulling mechanism further includes a slide rail arranged on the mounting plate. The slider is slidably arranged on the slide rail.

[0014] Among them, the moving mold is provided with a gate, and a runner is communicated between the gate and the cavity.

[0015] Among them, the ejection plate is connected with an ejector rod for ejecting the runner waste. The ejector rod is movably inserted through the stationary mold and the core-pulling mechanism, and the free end of the ejector rod can movably extend into or out of the runner.

[0016] Among them, the upper surface of the ejector block is convexly provided with a convex block corresponding to the opening shape of the charger housing, and the upper surface of the convex block is flush with the upper end surface of the charger housing.

[0017] Among them, the number of the convex blocks is equivalent to the number of the openings of the charger housing. The number of the demolding and ejection mechanisms is equivalent to the number of the openings of the charger housing. One set of demolding and ejection mechanism is correspondingly arranged for each opening of the charger housing.

[0018] Among them, the bottom plate is provided with a plurality of ejection driving holes for the injection molding machine to drive the ejection plate to move, thereby driving the ejector pins and the ejector rods to move.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] Through the setting of the demolding and ejection mechanism, the demolding and ejection mechanism includes ejector pins, ejector blocks, guiding members, guiding holes and assembly grooves. The assembly grooves are formed on the top surface of the inner core. The ejector blocks are placed in the assembly grooves. The guiding holes are formed in the assembly grooves. The upper end of the guiding member is connected to the ejector block and the guiding member is telescopically arranged in the guiding holes. The ejector pins are movably inserted through the inner core, and the free ends of the ejector pins are located below the ejector blocks. During the actual working process, after injection molding is completed, the ejector pins move upward, and the free ends of the ejector pins push the ejector blocks upward. Under the action of the guiding members and the guiding holes, the ejector blocks push the charger housing upward. The setting of the ejector blocks can effectively increase the contact area with the charger housing, so that the demolding force applied by the ejector pins is more widely distributed and the acting surface is larger, and the charger housing can be pushed up and separated from the inner core better and faster. At the same time, due to the large acting surface, the force acting on the charger housing per unit area can be effectively reduced, avoiding damage to the charger housing due to too concentrated demolding force and improving the qualified rate. In addition, the cooperation of the guiding members and the guiding holes can play a good positioning and guiding role to ensure the stability of ejection. When the mold is closed, the moving mold presses the upper surface of the ejector block so that the ejector block returns to the initial position of the assembly groove. During this process, the guiding members and the guiding holes can also play a good positioning and guiding role to ensure that the ejector block accurately enters the assembly groove and ensure the qualified rate. The above design of the present application not only effectively reduces the demolding difficulty of the two-hole or multi-hole charger housing, shortens the demolding time, improves the production efficiency, but also effectively improves the qualified rate. Description of the Drawings

[0021] Figure 1 is the perspective view of the present application.

[0022] Figure 2 is the top view of the present application.

[0023] Figure 3 is the present application Figure 2 the cross-sectional view in the direction of A-A.

[0024] Figure 4 is the bottom view of the present application.

[0025] Figure 5 is the present application Figure 4 the cross-sectional view in the direction of B-B.

[0026] Figure 6 is the present application Figure 4 the cross-sectional view in the direction of C-C.

[0027] Figure 7 is the partial structure perspective view of the present application.

[0028] Figure 8 is an enlarged view of region D in this application Figure 7 in the present application.

[0029] Figure 9 is an exploded view of the inner core and part of the demolding and ejection mechanism of this application.

[0030] Figure 10 is a three-dimensional view of the charger housing obtained by injection molding of this application.

[0031] Explanation of reference numerals in the drawings:

[0032] 1. Charger housing; 11. Housing body; 12. Plug-in hole;

[0033] 2. Moving mold; 21. Gate; 22. Runner;

[0034] 3. Demolding and ejection mechanism; 31. Ejector pin; 32. Ejector block; 33. Guide member; 34. Guide hole; 35. Assembly groove; 36. Guide post; 37. Compression spring; 38. Ejection plate; 39. Protrusion;

[0035] 4. Fixed mold; 41. Bottom plate; 42. Mounting plate; 43. Connecting plate;

[0036] 5. Core-pulling mechanism; 51. Slide block; 52. Angle pin; 53. Slide rail; 54. Angle guide hole;

[0037] 6. Cavity; 7. Inner core; 8. Ejector rod; 9. Ejection drive hole. Detailed description of the specific implementation

[0038] The following further describes this application in detail with reference to the Figures 1 - 10 drawings.

[0039] The charger housing 1 produced in this embodiment includes a housing body 11 and two plug-in holes 12 opened on the back of the housing body 11. The two plug-in holes 12 are respectively used for the installation of two connector female heads of different interface types.

[0040] An injection mold for a charger housing includes:

[0041] Moving mold 2;

[0042] Fixed mold 4, disposed below the moving mold 2. The surface of the fixed mold 4 close to the moving mold 2 is convexly provided with inner cores 7. A set of core-pulling mechanisms 5 are respectively disposed on opposite sides of each inner core 7. The moving mold 2 is used to close or separate with the two sets of core-pulling mechanisms 5. After mold closing, a cavity 6 is formed between the two sets of core-pulling mechanisms 5 and the inner cores 7 and between the moving mold 2 and the inner cores 7.

[0043] The demolding and ejection mechanism 3 includes a ejector pin 31, a ejector block 32, a guide member 33, a guide hole 34 and an assembly groove 35. The assembly groove 35 is formed in the top surface of the inner core 7. The ejector block 32 is placed in the assembly groove 35. The guide hole 34 is formed in the assembly groove 35. The upper end of the guide member 33 is connected to the ejector block 32 and the guide member 33 is telescopically arranged in the guide hole 34. The ejector pin 31 is movably inserted through the inner core 7, and the free end of the ejector pin 31 is located below the ejector block 32.

[0044] With the arrangement of the demolding and ejection mechanism 3 in the present application, the demolding and ejection mechanism 3 includes a ejector pin 31, a ejector block 32, a guide member 33, a guide hole 34 and an assembly groove 35. The assembly groove 35 is formed in the top surface of the inner core 7. The ejector block 32 is placed in the assembly groove 35. The guide hole 34 is formed in the assembly groove 35. The upper end of the guide member 33 is connected to the ejector block 32 and the guide member 33 is telescopically arranged in the guide hole 34. The ejector pin 31 is movably inserted through the inner core 7, and the free end of the ejector pin 31 is located below the ejector block 32. During the actual working process, after injection molding is completed, the ejector pin 31 moves upward, and the free end of the ejector pin 31 pushes the ejector block 32 upward. Under the action of the guide member 33 and the guide hole 34, the ejector block 32 pushes the charger housing 1 upward. The setting of the ejector block 32 can effectively increase the contact area with the charger housing 1, so that the demolding force applied by the ejector pin 31 is more widely distributed and the acting surface is larger, and the charger housing 1 can be pushed up and separated from the inner core 7 better and faster. At the same time, due to the large acting surface, the force acting on the charger housing 1 per unit area can be effectively reduced, avoiding damage to the charger housing 1 due to too concentrated demolding force and improving the qualified rate. In addition, the cooperation of the guide member 33 and the guide hole 34 can play a good positioning and guiding role to ensure the ejection stability. When the mold is closed, the moving mold 2 presses the upper surface of the ejector block 32 so that the ejector block 32 returns to the initial position of the assembly groove 35. During this process, the guide member 33 and the guide hole 34 can also play a good positioning and guiding role to ensure that the ejector block 32 accurately enters the assembly groove 35 and ensure the qualified rate. The above design of the present application not only effectively reduces the demolding difficulty of the charger housing 1 with two holes or multiple holes, shortens the demolding time, improves the production efficiency, but also effectively improves the qualified rate.

[0045] Among them, the fixed mold 4 includes a bottom plate 41, a mounting plate 42 disposed above the bottom plate 41, and a connecting plate 43 connected between the bottom plate 41 and the mounting plate 42. The demolding and ejecting mechanism 3 further includes a buffer assembly. The buffer assembly includes a guide post 36, a compression spring 37, and an ejector plate 38. The ejector plate 38 is placed between the bottom plate 41 and the mounting plate 42. One end of the guide post 36 is connected to the bottom plate 41, and the other end passes through the ejector plate 38 and is connected to the mounting plate 42. The compression spring 37 is clamped between the mounting plate 42 and the ejector plate 38. The ejector pin 31 is fixed to the ejector plate 38.

[0046] The setting of the buffer assembly can play a good buffering role during the demolding and ejecting process, avoiding excessive impact of the ejector pin 31 and damaging the molded product, and improving the yield rate.

[0047] Among them, the central axis of the guide hole 34 is parallel to the moving direction of the ejector pin 31, and the moving direction of the ejector pin 31 is perpendicular to the upper surface of the ejector block 32. Specifically, the moving direction of the ejector pin 31 is perpendicular to the back surface of the charger housing 1, thereby ensuring that the demolding has less resistance, the required demolding force is smaller, reducing the product rejection rate caused by the demolding force to the lowest, and at the same time, the demolding is faster.

[0048] Among them, the core-pulling mechanism 5 includes a slider 51 and an inclined guide post 52. The slider 51 is slidably disposed on the mounting plate 42. One end of the inclined guide post 52 is fixed to the moving mold 2. The slider 51 is provided with an inclined guide hole 54 that cooperates with the inclined guide post 52. Specifically, when the mold is closed, the moving mold 2 drives the inclined guide post 52 to move downward. The lower end of the inclined guide post 52 is inserted into the inclined guide hole 54 and drives the two sliders 51 of the two core-pulling mechanisms 5 to slide towards each other until the two sliders 51 are completely closed. At this time, the lower surface of the moving mold 2 and the two sliders 51 complete the enclosure of the upper end surface and the periphery of the inner core 7, and there is a certain gap between the lower surface of the moving mold 2 and the two sliders 51 and the inner core 7, thereby forming a cavity 6. When the mold is opened, the moving mold 2 drives the inclined guide post 52 to move upward. The lower end of the inclined guide post 52 is gradually withdrawn from the inclined guide hole 54 and drives the two sliders 51 of the two core-pulling mechanisms 5 to slide away from each other until the inclined guide post 52 completely leaves the inclined guide hole 54. At this time, the two sliders 51 are completely separated and enter the designated position.

[0049] Among them, the core-pulling mechanism 5 further includes a slide rail 53 disposed on the mounting plate 42. The slider 51 is slidably disposed on the slide rail 53. The setting of the slide rail 53 can increase the sliding accuracy of the slider 51.

[0050] Among them, the moving mold 2 is provided with a gate 21, and a runner 22 is communicated between the gate 21 and the cavity 6.

[0051] Among them, the ejector plate 38 is connected with an ejector rod 8 for ejecting the runner material. The ejector rod 8 is movably inserted through the fixed mold 4 and the core-pulling mechanism 5, and the free end of the ejector rod 8 can movably extend into or out of the runner 22. Specifically, when the mold is closed, the free end of the ejector rod 8 is located below the runner 22. After the injection molding is completed, the mold is opened, and the injection molding machine drives the ejector plate 38 to move upward, thereby driving the ejector pin 31 and the ejector rod 8 to move upward. The ejector pin 31 jacks up the ejector block 32 to jack up the product slightly to achieve demolding. At the same time, the ejector rod 8 moves upward, and the free end of the ejector rod 8 enters the runner 22 to eject the runner material in the runner 22, so as to achieve the simultaneous demolding of the product and the runner material.

[0052] Among them, a convex block 39 corresponding to the opening shape of the charger housing 1 is convexly provided on the upper surface of the ejector block 32, and the upper surface of the convex block 39 is flush with the upper end surface of the charger housing 1. Specifically, during injection molding, the setting of the convex block 39 enables the charger housing 1 to form a plug-in hole 12 that meets the composite size requirements. When the mold is closed, the lower end surface of the moving mold 2 contacts the upper surface of the convex block 39 and presses down the ejector block 32, so that the ejector block 32 returns to the initial position. And because during injection molding, the ejector block 32 is reset by the moving mold 2 extruding the convex block 39 to make the ejector block 32 return to the initial position, the reset accuracy is high.

[0053] Among them, the number of the convex blocks 39 is equivalent to the number of the openings of the charger housing 1, and the number of the demolding and ejecting mechanisms 3 is equivalent to the number of the openings of the charger housing 1. One set of demolding and ejecting mechanisms 3 is correspondingly arranged for each opening of the charger housing 1. Specifically, the number of the demolding and ejecting mechanisms 3 is two groups, and the two groups of demolding and ejecting mechanisms 3 correspond to the two plug-in holes 12 one by one.

[0054] Among them, the bottom plate 41 is provided with a plurality of ejecting drive holes 9 for the injection molding machine to drive the ejector plate 38 to move, thereby driving the ejector pin 31 and the ejector rod 8 to move. Specifically, during demolding, the injection molding machine is provided with a power component that passes through the ejecting drive holes 9 to jack up the ejector plate 38 upward, thereby driving the ejector pin 31 and the ejector rod 8 to move upward to complete demolding.

[0055] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A charger housing injection mold, characterized in that: include: Moving mold (2); The fixed mold (4) is arranged below the movable mold (2). An inner core (7) is convexly arranged on the surface of the fixed mold (4) close to the movable mold (2). A set of core pulling mechanisms (5) are respectively arranged on opposite sides of each inner core (7). The movable mold (2) is used to close or separate with the two sets of core pulling mechanisms (5). After the mold is closed, a cavity (6) is formed between the two sets of core pulling mechanisms (5) and the inner core (7) and between the movable mold (2) and the inner core (7). The demoulding and ejecting mechanism (3) comprises an ejector pin (31), an ejector block (32), a guide member (33), a guide hole (34) and an assembly groove (35), wherein the assembly groove (35) is provided on the top surface of the inner mold core (7), the ejector block (32) is placed in the assembly groove (35), the guide hole (34) is provided in the assembly groove (35), the upper end of the guide member (33) is connected to the ejector block (32) and the guide member (33) is telescopically arranged in the guide hole (34), the ejector pin (31) is movably arranged in the inner mold core (7), and the free end of the ejector pin (31) is located below the ejector block (32).

2. The charger housing injection mold according to claim 1, characterized in that: The fixed mold (4) comprises a bottom plate (41), a mounting plate (42) arranged above the bottom plate (41), and a connecting plate (43) connected between the bottom plate (41) and the mounting plate (42); the demoulding ejection mechanism (3) also comprises a buffer assembly, the buffer assembly comprises a guide column (36), a compression spring (37), and an ejection plate (38); the ejection plate (38) is placed between the bottom plate (41) and the mounting plate (42); one end of the guide column (36) is connected to the bottom plate (41), and the other end passes through the ejection plate (38) and is connected to the mounting plate (42); the compression spring (37) is sandwiched between the mounting plate (42) and the ejection plate (38); the ejector pin (31) is fixed to the ejection plate (38).

3. The charger housing injection mold according to claim 1, characterized in that: The central axis of the guide hole (34) is parallel to the moving direction of the ejector pin (31), and the moving direction of the ejector pin (31) is perpendicular to the upper surface of the ejector block (32).

4. The charger housing injection mold according to claim 2, characterized in that: The core pulling mechanism (5) comprises a slider (51) and an inclined guide column (52), wherein the slider (51) is slidably arranged on the mounting plate (42), one end of the inclined guide column (52) is fixed to the movable mold (2), and the slider (51) is provided with an inclined guide hole (54) cooperating with the inclined guide column (52).

5. The charger housing injection mold according to claim 4, characterized in that: The core pulling mechanism (5) further comprises a slide rail (53) arranged on the mounting plate (42), and the slider (51) is slidably arranged on the slide rail (53).

6. The charger housing injection mold according to claim 2, characterized in that: The movable mold (2) is provided with a gate (21), and a flow channel (22) is connected between the gate (21) and the mold cavity (6).

7. The charger housing injection mold according to claim 6, characterized in that: The ejector plate (38) is connected to an ejector rod (8) for ejecting the water outlet material. The ejector rod (8) can be movably inserted into the fixed mold (4) and the core pulling mechanism (5), and the free end of the ejector rod (8) can be movably extended into or out of the flow channel (22).

8. The charger housing injection mold according to claim 1, characterized in that: A convex block (39) corresponding to the shape of the opening of the charger housing (1) is convexly provided on the upper surface of the top block (32), and the upper surface of the convex block (39) is flush with the upper end surface of the charger housing (1).

9. The charger housing injection mold according to claim 8, characterized in that: The number of the protrusions (39) is equal to the number of openings of the charger shell (1), the number of the demoulding and ejecting mechanisms (3) is equal to the number of openings of the charger shell (1), and a group of demoulding and ejecting mechanisms (3) is provided corresponding to each opening of the charger shell (1).

10. The charger housing injection mold according to claim 7, characterized in that: The bottom plate (41) is provided with a plurality of ejection drive holes (9) for the injection molding machine to drive the ejection plate (38) to move, thereby driving the ejector pin (31) and the ejector rod (8) to move.

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