Projector rear terminal cover injection mold

Abstract

The utility model discloses an injection mold for a rear terminal cover of a projector, and aims to solve the problems that in the demolding process of the rear terminal cover of the existing projector, due to the existence of mounting holes and buckles, demolding is difficult, and breakage and product scrapping are easily caused. The injection mold comprises an upper mold and a lower mold, the upper mold comprises an upper fixing plate and an upper mold plate fixedly connected to the lower surface of the upper fixing plate, an upper mold core is installed in the upper mold plate, the lower mold comprises a lower fixing plate and a lower mold plate, the front side and the rear side of the upper surface of the lower fixing plate are fixedly connected with two connecting plates, and the upper surfaces of the connecting plates are fixedly connected with the lower mold plate. According to the utility model, the formed projector rear terminal cover is separated from the lower mold core through the core pulling assembly and the demolding assembly, and is separated from a buckle formed on the projector rear terminal cover, so that a product is quickly and effectively ejected out of the mold core, the integrity of the product is ensured, and breakage and scrapping of the product are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, specifically relating to an injection mold for a projector rear terminal cover. Background Technology

[0002] Projectors typically have various interfaces on the back, such as HDMI, VGA, and RCA ports. These interfaces are exposed when not in use, making them susceptible to dust and debris accumulation, and they may even be damaged by accidental impacts. A rear terminal cover can cover these interfaces when the projector is not in use, reducing the risk of dust entering the interfaces and causing poor contact. It also prevents physical damage to the interfaces, extending the projector's lifespan. Therefore, the main function of a projector's rear terminal cover is protection and dust prevention.

[0003] like Figure 1 As shown, the existing projector rear terminal cover has mounting holes 111 on both the left and right sides, and two buckles 112 on the underside of the projector rear terminal cover for connecting to the projector housing. However, the projector rear terminal cover needs to be demolded after the injection molding process is completed. Due to the presence of mounting holes and buckles, demolding is difficult, which can easily cause breakage and product scrap. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an injection mold for a projector rear terminal cover. This injection mold aims to solve the problem that existing projector rear terminal covers require demolding after injection molding, which is difficult due to the presence of mounting holes and clips, easily leading to breakage and product scrap.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides an injection mold for a projector rear terminal cover. The injection mold includes an upper mold and a lower mold. The upper mold includes an upper fixed plate and an upper template fixedly connected to the lower surface of the upper fixed plate. An upper mold core is installed inside the upper template. The lower mold includes a lower fixed plate and a lower template. Two connecting plates are fixedly connected to the front and rear sides of the upper surface of the lower fixed plate. The upper surface of the connecting plates is fixedly connected to the lower template. A lower mold core is installed on the lower template. A rear terminal cover cavity is formed between the upper mold core and the lower mold core. Mounting seat cavities are provided on the left and right sides of the front of the rear terminal cover cavity. Snap-fit ​​cavities are provided on the left and right sides of the middle of the rear terminal cover cavity. An injection port communicating with the rear terminal cover cavity is provided on the upper mold. A demolding assembly is provided between the lower template and the lower fixed plate. Core-pulling assemblies corresponding to the mounting seat cavities are provided on the left and right sides of the front of the lower template and the upper template.

[0008] Preferably, the upper surface of the lower mold plate is fixedly connected with a guide column at each corner, and the lower surface of the upper mold plate is provided with a guide hole corresponding to the guide column at each corner.

[0009] Further, the demolding assembly comprises a plurality of guide rods fixedly connected between the lower fixed plate and the lower mold plate, the outer surface of the guide rod is slidably sleeved with a movable plate, the upper surface of the movable plate is fixedly connected with a plurality of demolding ejector rods, the other end of the demolding ejector rod penetrates through the lower mold plate and is located in the inside of the lower mold core, and the outer surface of the guide rod and between the movable plate and the lower mold plate is sleeved with a spring one.

[0010] Further, the left and right sides of the upper surface of the movable plate are fixedly connected with a mounting seat, the mounting seat is slidably connected with an inclined ejector rod, the lower mold plate is provided with a through hole corresponding to the inclined ejector rod, and the top end of the inclined ejector rod penetrates through the through hole and is located at the buckle cavity.

[0011] Further, the left and right sides of the front of the lower mold plate and the upper mold plate are provided with grooves, and the core pulling assembly is located in the inside of the grooves.

[0012] Further, the core pulling assembly comprises a fixed block fixedly connected to the front of the upper mold core and a movable block slidably connected to the front of the lower mold core, the right side of the fixed block is fixedly connected with an inclined limiting block, the lower surface of the fixed block is fixedly connected with an inclined column, the movable block is provided with an inclined circular hole, and the inclined column is located in the inside of the circular hole.

[0013] Further, a spring two is installed between the lower mold core and the movable block, and one end of the movable block close to the lower mold core extends to the mounting seat cavity and is fixedly connected with a core pulling mold. Advantages

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses, when injection molding, material flows into the rear end sub cover cavity, mounting seat cavity and buckle cavity formed by the upper mold core and the lower mold core, until the raw material cools and forms the rear end sub cover of projector in the cavity, then the upper mold and the lower mold are separated by the press, at this time, the core pulling assembly makes the movable block and the core pulling mold separate from the mounting seat cavity, then the demolding assembly separates the formed rear end sub cover of projector from the lower mold core, and the inclined ejector rod can move gradually to the outside after moving upward, finally, the buckle formed on the rear end sub cover of projector is separated, so that the product is quickly and effectively ejected from the mold core, and the integrity of the product is ensured, and breakage and product scrapping are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a rear end sub cover structure diagram of projector.

[0017] Figure 2 is the three-dimensional structure schematic diagram of the utility model.

[0018] Figure 3 is the left view structure schematic diagram of the utility model.

[0019] Figure 4 is the left view structure schematic diagram of the utility model.

[0020] Figure 5 is the front view cross section structure schematic diagram of the utility model.

[0021] Figure 6 is the installation structure schematic diagram of the mold core of the utility model.

[0022] Figure 7 is the structure schematic diagram of the lower mold core of the utility model.

[0023] Figure 8 is the structure schematic diagram of the movable block of the utility model.

[0024] The marks in the drawing are: 1, upper mold; 2, lower mold; 3, upper fixed plate; 4, upper mold plate; 5, upper mold core; 6, lower fixed plate; 7, lower mold plate; 8, connecting plate; 9, lower mold core; 10, recess; 11, rear end cover cavity; 12, mounting seat cavity; 13, buckle cavity; 14, injection port; 15, demolding assembly; 16, core pulling assembly; 1501, guide rod; 1502, movable plate; 1503, demolding ejector rod; 1504, spring one; 1505, mounting seat; 1506, inclined ejector rod; 1507, through hole; 1601, fixed block; 1602, movable block; 1603, limit block; 1604, inclined column; 1605, round hole; 1606, spring two; 1607, core pulling mold. DETAILED DESCRIPTION

[0025] The specific embodiment is a rear end cover injection mold of a projector, and a structure schematic diagram is as shown in Figures 2-8As shown, the injection mold comprises an upper mold 1 and a lower mold 2, the upper mold 1 comprises an upper fixed plate 3 and an upper mold plate 4 fixedly connected to the lower surface of the upper fixed plate 3, the inside of the upper mold plate 4 is provided with an upper mold core 5, the lower mold 2 comprises a lower fixed plate 6 and a lower mold plate 7, two connecting plates 8 are fixedly connected to the upper surface of the lower fixed plate 6 on the front and rear sides, the upper surface of the connecting plate 8 is fixedly connected with the lower mold plate 7, the lower mold plate 7 is provided with a lower mold core 9, a rear terminal cover cavity 11 is formed between the upper mold core 5 and the lower mold core 9, mounting seat cavities 12 are arranged on the left and right sides of the front of the rear terminal cover cavity 11, buckle cavities 13 are arranged on the left and right sides of the middle of the rear terminal cover cavity 11, when injection molding, the material enters the inside of the main runner of the upper mold 1 through the injection port 14, and then flows into the rear terminal cover cavity 11, the mounting seat cavities 12 and the buckle cavities 13 formed by the upper mold core 5 and the lower mold core 9, until the raw material cools in the cavity to form a projector rear terminal cover, and the mounting hole 111 of the rear terminal cover in the mounting seat cavity 12, the buckle 112 of the rear terminal cover in the buckle cavity 13, the injection port 14 is arranged on the upper mold 1 and communicates with the rear terminal cover cavity 11, the demolding assembly 15 is arranged between the lower mold plate 7 and the lower fixed plate 6, the core pulling assembly 16 corresponding to the mounting seat cavity 12 is arranged on the left and right sides of the front of the lower mold plate 7 and the upper mold plate 4.

[0026] In the embodiment, the upper surface of the lower mold plate 7 is fixedly connected with a guide column at four corners, and the lower surface of the upper mold plate 4 is provided with a guide hole corresponding to the guide column at four corners; in this way, the upper mold plate 4 and the lower mold plate 7 are separated by the press, at this time the guide column can slide in the guide hole, and when the upper mold plate 4 and the lower mold plate 7 are closed, the guide column and the guide hole cooperate to more accurately close the mold.

[0027] As shown in Figure 2 and Figure 5 In the embodiment, the demolding assembly 15 comprises a plurality of guide rods 1501 fixedly connected between the lower fixed plate 6 and the lower mold plate 7, the outer surface of the guide rod 1501 is slidably sleeved with a movable plate 1502, the upper surface of the movable plate 1502 is fixedly connected with a plurality of demolding ejector rods 1503, the other end of the demolding ejector rod 1503 penetrates through the lower mold plate 7 and is located in the inside of the lower mold core 9, and a spring one 1504 is sleeved on the outer surface of the guide rod 1501 and located between the movable plate 1502 and the lower mold plate 7; by pushing the movable plate 1502, the demolding ejector rod 1503 can be moved upward to separate the formed projector rear terminal cover from the lower mold core 9.

[0028] As shown in Figure 5 and Figure 7As shown in the drawings: in this embodiment, the left and right sides of the upper surface of the movable plate 1502 are fixedly connected with mounting seats 1505, the mounting seats 1505 are slidably connected with inclined top rods 1506, the mounting seats 1505 are slidably connected with the inclined top rods 1506 through sliding blocks, the lower mold plate 7 is provided with through holes 1507 corresponding to the inclined top rods 1506, the top ends of the inclined top rods 1506 penetrate through the through holes 1507 and are located at the buckle cavities 13, and the top ends of the inclined top rods 1506 are part of the rear terminal cover cavities 11.

[0029] When the formed rear terminal cover of the projector is separated from the lower mold core 9, the inclined top rods 1506 can be gradually moved outward after being moved upward, and finally separated from the buckles 112 formed on the rear terminal cover of the projector.

[0030] As shown in the drawings: Figures 2-8 As shown in the drawings: in this embodiment, the left and right sides of the upper surface of the movable plate 1502 are fixedly connected with mounting seats 1505, the mounting seats 1505 are slidably connected with inclined top rods 1506, the mounting seats 1505 are slidably connected with the inclined top rods 1506 through sliding blocks, the lower mold plate 7 is provided with through holes 1507 corresponding to the inclined top rods 1506, the top ends of the inclined top rods 1506 penetrate through the through holes 1507 and are located at the buckle cavities 13, and the top ends of the inclined top rods 1506 are part of the rear terminal cover cavities 11.

[0031] The upper mold 1 and the lower mold 2 are separated by the press, at this time, the fixed block 1601 and the inclined column 1604 are driven by the upper mold core 5 to move upward, because the top end of the inclined column 1604 is gradually contracted inward, at this time, the inclined column 1604 can drive the movable block 1602 and the core pulling mold 1607 to separate from the mounting seat cavity 12 in the process of sliding in the circular hole 1605, the restoring force of the spring two 1606 can assist the movement of the movable block 1602, and the phenomenon of being stuck is avoided.

[0032] Working principle: when injection molding, the material enters the main flow channel inside the upper mold 1 through the injection port 14, and then flows into the rear terminal cover cavity 11, the mounting seat cavity 12 and the buckle cavity 13 formed by the upper mold core 5 and the lower mold core 9, until the raw material cools in the cavity to form the rear terminal cover of the projector, and then the upper mold 1 and the lower mold 2 are separated by the press, at this time the upper mold core 5 drives the fixed block 1601 and the inclined column 1604 to move upward, because the top end of the inclined column 1604 gradually shrinks inward, at this time the inclined column 1604 slides in the round hole 1605, which can drive the movable block 1602 and the core-pulling mold 1607 to separate from the mounting seat cavity 12, then the movable plate 1502 drives the demolding ejector rod 1503 and the inclined ejector rod 1506 to move upward, and the formed rear terminal cover of the projector is separated from the lower mold core 9, at the same time, because the inclined ejector rod 1506 is inclined and can slide left and right between the mounting seat 1505 and the bottom end, the inclined ejector rod 1506 can gradually move outward after moving upward, and finally separates from the buckle 112 formed on the rear terminal cover of the projector, so that the product is quickly and effectively ejected from the mold core, and the integrity of the product is ensured, and the product is prevented from being broken and scrapped.

[0033] All the technical features in the embodiment can be freely combined according to actual needs.

[0034] The above embodiment is a preferred implementation scheme of the utility model, in addition to this, the utility model can be realized in other ways, and any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. A projector rear sub-enclosure injection mould, the injection mould comprising an upper mould (1) and a lower mould (2), characterised in that: The upper die (1) comprises an upper fixed plate (3) and an upper die plate (4) fixedly connected to the lower surface of the upper fixed plate (3), the inside of the upper die plate (4) is provided with an upper die core (5), the lower die (2) comprises a lower fixed plate (6) and a lower die plate (7), the upper surface of the lower fixed plate (6) is fixedly connected with two connecting plates (8) on the front and back sides, the upper surface of the connecting plate (8) is fixedly connected with the lower die plate (7), the lower die plate (7) is provided with a lower die core (9), the rear terminal cover cavity (11) is formed between the upper die core (5) and the lower die core (9), the left and right sides of the front of the rear terminal cover cavity (11) is provided with a mounting seat cavity (12), the left and right sides of the middle of the rear terminal cover cavity (11) is provided with a buckle cavity (13), the upper die (1) is provided with an injection port (14) communicated with the rear terminal cover cavity (11), the lower die plate (7) and the lower fixed plate (6) are provided with a demolding assembly (15), the left and right sides of the front of the lower die plate (7) and the upper die plate (4) is provided with a core pulling assembly (16) corresponding to the mounting seat cavity (12).

2. The projector rear sub case injection mold according to claim 1, wherein, The upper surface of the lower die plate (7) is fixedly connected with guide columns at four corners, and the lower surface of the upper die plate (4) is provided with guide holes corresponding to the guide columns at four corners.

3. The projector rear sub-enclosure injection mold of claim 2, wherein, The demolding assembly (15) comprises a plurality of guide rods (1501) fixedly connected between the lower fixed plate (6) and the lower die plate (7), the outer surface of the guide rod (1501) is slidably sleeved with a movable plate (1502), the upper surface of the movable plate (1502) is fixedly connected with a plurality of demolding ejector rods (1503), the other end of the demolding ejector rod (1503) penetrates through the lower die plate (7) and is located in the inside of the lower die core (9), and the outer surface of the guide rod (1501) and between the movable plate (1502) and the lower die plate (7) is sleeved with a spring (1504).

4. The projector rear sub-enclosure injection mold of claim 3, wherein, The left and right sides of the upper surface of the movable plate (1502) are fixedly connected with mounting seats (1505), the mounting seat (1505) is slidably connected with an inclined ejector rod (1506) on the left and right sides, the lower die plate (7) is provided with a through hole (1507) corresponding to the inclined ejector rod (1506), and the top end of the inclined ejector rod (1506) penetrates through the through hole (1507) and is located at the buckle cavity (13).

5. The projector rear sub-enclosure injection mold of claim 4, wherein, The left and right sides of the front of the lower die plate (7) and the upper die plate (4) are provided with grooves (10), and the core pulling assembly (16) is located in the inside of the groove (10).

6. The projector rear sub-enclosure injection mold of claim 5, wherein, The core pulling assembly (16) comprises a fixed block (1601) fixedly connected to the front of the upper die core (5) and a movable block (1602) slidably connected to the front of the lower die core (9), the right side of the fixed block (1601) is fixedly connected with an inclined limiting block (1603), the lower surface of the fixed block (1601) is fixedly connected with an inclined column (1604), the movable block (1602) is provided with an inclined circular hole (1605), and the inclined column (1604) is located in the inside of the circular hole (1605).

7. The projector rear sub-enclosure injection mold of claim 6, wherein, The lower mold core (9) and the movable block (1602) are provided with a spring (1606), and the movable block (1602) extends to the mounting seat cavity (12) at one end of the lower mold core (9) and is fixedly connected with a core pulling mold (1607).

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