Injection mold for foot lamp shell

Abstract

The utility model relates to an injection mold for a foot lamp shell, which comprises an upper mold seat and a lower mold seat which are matched with each other, and a mold core seat, a mold core, a side pulling block, an ejector rod, an inclined ejector rod, a stand column and a demolding plate which are arranged in the lower mold seat. Due to the fact that the inclined ejector rods and the ejector rods are densely distributed on the inner side and the outer side of the cavity in a rectangular mode respectively, multi-point even demolding is achieved, stress is even during demolding, shell deformation or damage caused by local stress concentration is avoided, the technical problems that the inner contour of a foot lamp shell is long in depth, and demolding is difficult are effectively solved, and the service life of the foot lamp shell is prolonged. The method is suitable for efficient production of shells with complex structures.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, especially a kind of injection mold for ground foot lamp shell. BACKGROUND

[0002] Traditional ground foot lamp shell is mostly formed by plastic injection molding, and its main structure usually has features such as deep inner cavity, fine clamping groove structure and threading hole. When forming such shell, the existing injection mold usually adopts simple ejection mechanism or inclined ejection mechanism. However, due to the long depth of the inner contour of the ground foot lamp shell and the need to form fine structures such as inner clamping groove and through hole, the demolding mode of the conventional mold cannot guarantee uniform stress, which may cause local stress concentration of the shell during demolding, resulting in product warping, cracking or even breaking, and causing serious mold wear. Therefore, a new injection mold structure is needed to realize efficient and stable demolding of complex ground foot lamp shell and improve product production efficiency and yield. SUMMARY

[0003] To overcome the shortcomings of the background art, the utility model adopts the technical scheme of an injection mold for ground foot lamp shell, which comprises a matched upper mold base and lower mold base, a mold core seat, a mold core, a side puller, a ejector rod, an inclined ejector rod, a column and a demolding plate arranged in the lower mold base. The lower mold base is detachably connected with the mold core seat, which is provided with a boss part for forming the outer contour of the shell. The mold core seat is connected with the mold core, and the mold core seat and the mold core are combined to form a cavity for forming the inner contour of the shell. The lower mold base is slidably connected with a side puller for forming the through hole of the shell on one side of the mold core seat. The side puller extends through the mold core seat to the mold core. The boss part is slidably connected with an ejector rod for demolding around its periphery. The mold core is slidably connected with an inclined ejector rod for auxiliary demolding around its periphery. The inclined ejector rod is provided with a protrusion for forming the inner clamping groove of the shell. The lower mold base is slidably connected with a demolding plate through a column. The ejector rod is fixedly connected to the demolding plate, and the inclined ejector rod is rotatably connected to the demolding plate.

[0004] With the above technical scheme, the ground foot lamp shell is used for installing wall surface, the outer contour of which corresponds to the size of the electrician box, the inner side of the inner contour is used for installing electronic devices, the through hole is used for threading, and the inner clamping groove is used for connecting the back cover. During demolding, the inclined ejector rod and the ejector rod are densely distributed on the inner and outer sides of the cavity in a rectangular shape, realizing multi-point uniform demolding and making the stress uniform during demolding. This avoids deformation or damage of the shell caused by local stress concentration, effectively solves the technical problem of long depth of the inner contour of the ground foot lamp shell and difficult demolding, and is suitable for efficient production of complex structure shell.

[0005] The utility model further sets up, the lower die base is equipped with rectangular cavity and counterbore for installing mould core seat, and the mould core seat is screw connected in the rectangular cavity through the counterbore, and the mould core seat is equipped with inner cavity for installing mould core, and the inner cavity bottom is equipped with step surface, the mould core is equipped with the clamping portion that is matched with step surface, and the clamping portion is clamped between the lower die base and the mould core seat through step surface.

[0006] The mould core is detachably connected to the lower die base through the lower die base, so that the mould core assembly composed of the mould core and the lower die base is convenient to replace and maintain, and the utilization rate of the mould frame is improved.

[0007] The utility model further sets up, the mould core is equipped with the first inclined groove that inclines to the inside, the inclined ejector rod is slidably connected in the first inclined groove, and the mould core seat is equipped with the second inclined groove that is matched with the first inclined groove.

[0008] Further, the mould core seat is equipped with an extension part for forming a housing mounting hole, and the mould core is equipped with a mounting groove matched with the extension part, the mounting groove is equipped with the first inclined groove, and the extension part is equipped with a third inclined groove matched with the first inclined groove.

[0009] The first inclined groove is spliced with the second inclined groove and the third inclined groove to form a sliding groove for mounting the inclined ejector rod, when demolding, the demolding plate moves towards the direction of the mould core, at this time, the six groups of inclined ejector rods simultaneously translate towards the center direction relative to the housing, avoiding interference between the inclined ejector rod and the housing during demolding, and improving the forming precision and demolding efficiency of the mould.

[0010] The utility model further sets up, the boss part is equipped with two groups of fourth inclined grooves for forming a housing mounting cavity, and the two groups of inclined ejector rods are symmetrically distributed through the fourth inclined grooves.

[0011] The fourth inclined groove is an independent sliding groove for mounting the inclined ejector rod, and due to the symmetric distribution of the fourth inclined groove, when demolding, the two groups of inclined ejector rods move towards the opposite direction, so that the housing forms a mounting cavity for mounting the magnet, and the protruding parts of the two groups of inclined ejector rods face opposite directions and form a clamping groove for clamping the magnet, thereby enhancing the stability and reliability of the mounting structure.

[0012] The utility model further sets up, the demolding plate is equipped with an adapter, one end of the ejector rod is fixedly connected to the demolding plate, the other end extends to the mould core seat through the adapter, the adapter is equipped with a T-shaped groove, one end of the inclined ejector rod is rotatably connected to the T-shaped groove through a pin shaft, and the other end extends to the cavity.

[0013] Further, the upper surface of the ejector rod is equipped with an ejection surface matched with the boss part.

[0014] The technical scheme is adopted, the ejector rod is fixedly connected to the stripping plate, in the stripping process, the direction of the ejector rod is always the same as the stripping direction, the top surface of the boss part is smoothly connected with the ejection surface, and the boss part participates in the formation of the shell, and the shell is suitable for a complex structure; and the inclined ejector rod rotates along the T-shaped groove through the limitation of the mold core seat in the stripping process, since the ejector rods are arranged at the periphery of the inclined ejector rod, no interference occurs in the stripping process.

[0015] The utility model further sets up, the boss part's four arounds are equipped with the cutout groove for forming the shell reinforcing rib, the ejector rod is equipped with the rib position ejection part corresponding with the cutout groove.

[0016] The technical scheme is adopted, the ejector rod corresponding with the cutout groove is provided with the rib position ejection part for assisting stripping, so that the stripping force acts on the reinforcing rib structure, the reinforcing rib structure is prevented from being damaged and remaining, and the stripping effect is improved.

[0017] The utility model embodiment is further explained in connection with the drawings. DRAWINGS

[0018] Figure 1 It is the sectional view of the utility model;

[0019] Figure 2 It is the top view of the lower mold base part of the utility model;

[0020] Figure 3 It is the Figure 1 It is the local enlarged view of the middle A view of the utility model;

[0021] Figure 4 It is the perspective view of the mold core seat of the utility model;

[0022] Figure 5 It is the perspective view of the mold core of the utility model;

[0023] Figure 6 It is the structural schematic view of the ejector rod and the inclined ejector rod distribution in the stripping plate of the utility model;

[0024] Figure 7 It is the perspective view of the floor lamp shell of the utility model;

[0025] Wherein: 1-Upper mold base, 2-Lower mold base, 3-Mold core base, 4-Mold core, 5-Side pull block, 6-Ejector rod, 7-Angled ejector rod, 8-Column, 9-Removal template, 10-Boss part, 11-Cavity, 12-Protrusion, 13-Rectangular cavity, 14-Counterhead hole, 15-Inner cavity, 16-Step surface, 17-Snap-fit ​​part, 18-First inclined groove, 19-Second inclined groove, 20-Extension part, 21-Mounting groove, 22-Third inclined groove, 23-Fourth inclined groove, 25-Adapter, 26-T-slot, 28-Ejection surface, 29-Cutting groove, 30-Rib ejection part, 31-Outer contour, 32-Mounting hole, 33-Inner contour, 34-Reinforcing rib, 35-Through hole, 36-Inner snap groove; Detailed Implementation

[0026] like Figures 1-3 As shown, this embodiment provides an injection mold for a base lamp housing, including a matching upper mold base 1 and a lower mold base 2, and a core mold base 3, a core mold 4, a side pull block 5, an ejector pin 6, an inclined ejector pin 7, a column 8, and a release plate 9 disposed within the lower mold base 2. The core mold base 2 is detachably connected to the core mold base 3, which has a boss portion 10 for forming the outer contour of the housing. The core mold base 3 is engaged with the core mold 4, and the core mold base 3 and the core mold 4 are combined to form a cavity 11 for forming the inner contour of the housing. The base 2 is slidably connected to a side pull block 5 for forming a through hole in the shell on one side of the mold core base 3. The side pull block 5 extends through the mold core base 3 to the mold core 4. The boss part 10 is slidably connected to a push rod 6 for demolding. The mold core 4 is slidably connected to an inclined push rod 7 for assisting demolding. The inclined push rod 7 is provided with a protrusion 12 for forming a groove in the shell. The lower mold base 2 is slidably connected to a demolding template 9 through a column 8. The push rod 6 is fixedly connected to the demolding template 9, and the inclined push rod 7 is rotatably connected to the demolding template 9.

[0027] Combination Figure 4 , 5As shown, in the embodiment, the lower die seat 2 is provided with a rectangular cavity 13 and a counterbore hole 14 for mounting the mold core seat 3, the mold core seat 3 is threadedly connected in the rectangular cavity 13 through the counterbore hole 14, the mold core seat 3 is provided with an inner cavity 15 for mounting the mold core 4, the inner cavity 15 is provided with a stepped surface 16 at the bottom, the mold core 4 is provided with a clamping portion 17 matched with the stepped surface 16, the clamping portion 17 is clamped between the lower die seat 2 and the mold core seat 3 through the stepped surface 16, the mold core 4 is provided with a first inclined chute 18 inclined inwardly, the inclined ejector rod 7 is slidingly connected to the first inclined chute 18, the mold core seat 3 is provided with a second inclined chute 19 matched with the first inclined chute 18, the mold core seat 3 is provided with an extension 20 for forming a shell mounting hole, the mold core 4 is provided with a mounting groove 21 matched with the extension 20, the mounting groove 21 is provided with the first inclined chute 18, the extension 20 is provided with a third inclined chute 22 matched with the first inclined chute 18, the first inclined chute 18 is spliced with the second inclined chute 19 and the third inclined chute 22 to form a sliding groove for mounting the inclined ejector rod 7, the boss portion 10 is provided with two groups of fourth inclined chutes 23 for forming a shell mounting cavity, the two groups of inclined ejector rods 7 are symmetrically distributed through the fourth inclined chutes 23, and the fourth inclined chutes 23 are independent sliding grooves for mounting the inclined ejector rods 7.

[0028] In combination Figure 6 As shown, in the embodiment, the stripper plate 9 is provided with an adapter 25, one end of the ejector rod 6 is fixedly connected to the stripper plate 9, and the other end extends to the mold core seat 3 through the adapter 25, the adapter 25 is provided with a T-shaped groove 26, one end of the inclined ejector rod 7 is rotatably connected to the T-shaped groove 26 through a pin shaft, and the other end extends to the cavity 11, the upper surface of the ejector rod 6 is provided with an ejection surface 28 matched with the boss portion 10, the ejector rod 6 is fixedly connected to the stripper plate 9, the periphery of the boss portion 10 is provided with a cutout groove 29 for forming a shell reinforcing rib, and the ejector rod 6 is provided with a rib position ejection portion 30 corresponding to the cutout groove 29, the rib position ejection portion 30 is arranged on the ejector rod 6 corresponding to the cutout groove 29 to assist demolding, so that the demolding force acts on the reinforcing rib structure, avoiding damage to the reinforcing rib structure and residual, and improving the demolding effect.

[0029] In combination Figure 7As shown, in the utility model, the upper die seat 1 and the lower die seat 2 form a cavity for injection molding after closing, wherein the convex platform part 10 outer side surface and the upper die seat 1 combination form the outer contour 31 of the shell, the extension 20 of the mold core seat 3 two sides and the upper die seat 1 combination form the mounting hole 32 for connecting the electrician box, the cavity 11 forms the inner contour 33 for installing electronic devices, the cutout groove 29 forms the reinforcing rib 34 connecting the outer contour and the inner contour, the side extraction block 5 forms the through hole 35 for threading, the inclined ejector rod 7 forms the inner clamping groove 36 for clamping the back cover and the magnet;The lower die seat 2 is provided with twelve groups of rectangular distribution ejector rods 6 on the periphery, and six groups of rectangular distribution inclined ejector rods 7 are arranged in the inner periphery, when demolding, the injection molding machine controls the stripper plate 9 to move towards the direction of the mold core 4, the moving direction of the ejector rod 6 is same with the demolding direction, while the inclined ejector rod 7 moves towards the center direction through the positioning of the mold core 4, so that the inclined ejector rod 7 translates towards the center direction relative to the shell, the multidirectional collaborative demolding mechanism is adopted, so that the shell with complex internal structure realizes nondestructive demolding, and the quality of product is guaranteed.

[0030] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An injection mold for a floor lamp housing, characterized by, The utility model relates to a shell moulding die, including the upper die holder (1) and lower die holder (2) of adaptation and the die core seat (3) in the lower die holder (2), the die core (4), side draw block (5), the ejector rod (6), inclined ejector rod (7), column (8) and stripper plate (9), the lower die holder (2) can detachably connect with die core seat (3), die core seat (3) is equipped with boss part (10) for forming shell outer contour, die core seat (3) is clamped with die core (4), and die core seat (3) and die core (4) combination form cavity (11) for forming shell inner contour, the lower die holder (2) is located die core seat (3) one side sliding connection with side draw block (5) for forming shell through -hole, side draw block (5) extends to die core (4) through die core seat (3), the periphery of boss part (10) is slidingly connected with the ejector rod (6) for demoulding, the periphery of die core (4) is slidingly connected with the inclined ejector rod (7) for auxiliary demoulding, and the inclined ejector rod (7) is equipped with the protruding portion (12) of the shell inner card slot, and the lower die holder (2) is slidingly connected with stripper plate (9) through column (8), and the ejector rod (6) is fixedly connected to stripper plate (9), and the inclined ejector rod (7) is rotatably connected to stripper plate (9).

2. The injection mold for a floor lamp housing according to claim 1, wherein: The lower die holder (2) is provided with a rectangular cavity (13) and a countersunk hole (14) for mounting the die core seat (3), the die core seat (3) is threadedly connected in the rectangular cavity (13) through the countersunk hole (14), the die core seat (3) is provided with an inner cavity (15) for mounting the die core (4), the inner cavity (15) is provided with a stepped surface (16) at the bottom, the die core (4) is provided with a clamping portion (17) matched with the stepped surface (16), and the clamping portion (17) is clamped between the lower die holder (2) and the die core seat (3) through the stepped surface (16).

3. An injection mold for a floor lamp housing according to claim 2, characterized in that: The die core (4) is provided with a first inclined groove (18) inclined inwardly, the inclined ejector rod (7) is slidingly connected to the first inclined groove (18), and the die core seat (3) is provided with a second inclined groove (19) matched with the first inclined groove (18).

4. The injection mold for a floor lamp housing according to claim 3, wherein: The die core seat (3) is provided with an extension (20) for forming a shell mounting hole, the die core (4) is provided with a mounting groove (21) matched with the extension (20), the mounting groove (21) is provided with the first inclined groove (18), and the extension (20) is provided with a third inclined groove (22) matched with the first inclined groove (18).

5. The injection mold for a floor lamp housing according to claim 1, wherein: The boss part (10) is provided with two groups of fourth inclined grooves (23) for forming shell mounting cavities, and the two groups of inclined ejector rods (7) are symmetrically distributed through the fourth inclined grooves (23).

6. An injection mold for a floor lamp housing according to claim 5, characterized in that: The stripper plate (9) is provided with an adapter (25), one end of the ejector rod (6) is fixedly connected to the stripper plate (9), the other end extends to the die core seat (3) through the adapter (25), the adapter (25) is provided with a T-shaped groove (26), one end of the inclined ejector rod (7) is rotatably connected to the T-shaped groove (26) through a pin shaft, and the other end extends to the cavity (11).

7. An injection mold for a floor lamp housing according to claim 6, characterized in that: The upper surface of the ejector rod (6) is provided with an ejection surface (28) matched with the boss part (10).

8. The injection mold for a floor lamp housing according to claim 6, wherein: The boss part (10) is provided with a cutout groove (29) for forming a shell reinforcing rib around the boss part (10), and the ejector rod (6) is provided with a rib-position ejecting part (30) corresponding to the cutout groove (29).

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