CN216885038U - Injection mold for electrical components - Google Patents

Abstract

The utility model discloses an injection mold of an electrical component, which comprises an upper mold assembly, a lower mold assembly and an ejection mechanism, wherein the upper mold assembly is provided with a fixed mold plate and a fixed mold core, the lower mold assembly is provided with a movable mold plate and a movable mold core, the movable mold core is provided with a mold cavity and a flash tank, the ejection mechanism is provided with a driving top plate, a driven top plate and a base, the driving top plate and the driven top plate are arranged at intervals, the base is provided with a fixed rod, the driven top plate is provided with a sleeve pipe sleeved outside the fixed rod, the driving top plate is provided with a stub bar, the stub bar is provided with an inclined punching part, and the punching part is positioned at the junction of the mold cavity and the flash tank. The utility model has the advantages of reasonable design, simple structure and uncomplicated manufacturing process, and can reduce the workload of workers and the labor cost.

Description

Injection mold for electrical components

Technical Field

The utility model relates to the field of injection molds, in particular to an injection mold for an electrical component.

Background

The injection mold can be divided into a cold runner mold and a hot runner mold according to a pouring system, and is divided into a thermosetting plastic mold and a thermoplastic plastic mold according to molding characteristics; the molding process includes transfer molding, blow molding, cast molding, thermoforming, hot pressing (compression molding), injection molding, etc.

Referring to fig. 1, there is shown an injection molded electrical component 100, wherein a slug 101 is provided on the side of the electrical component 100, so that the thermal plastic fills the mold cavity during the injection molding process, and the thermal plastic filled in the mold cavity overflows the mold cavity to form the slug 101. However, in the conventional mold structure, after demolding, a worker is required to remove the stub bar 101 by using a blade or scissors, which is time-consuming and labor-consuming, and the mold structure needs to be improved.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an injection mold of an electrical element, wherein a stub bar ejector rod cuts off a stub bar on the side surface of the electrical element before demolding, and workers do not need to cut off the stub bar.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides an electrical components's injection mold, includes mould subassembly, lower mould subassembly, ejection mechanism, last mould subassembly be equipped with fixed die plate and fixed die core, lower mould subassembly be equipped with movable mould board and movable die core, movable die core be equipped with die cavity and flash tank, ejection mechanism be equipped with initiative roof, driven roof, base, initiative roof and driven roof interval set up, the base be equipped with the dead lever, driven roof be equipped with the sleeve pipe of cover in the dead lever outside, the initiative roof be equipped with the stub bar ejector pin, the stub bar ejector pin be equipped with the die-cut portion of slope, die-cut position in die cavity and flash tank's juncture.

As a further improvement of the utility model: the upper die assembly is provided with a sprue bush and a flow distribution plate, the flow distribution plate is provided with two flow distribution channels which are in X-shaped cross distribution, the flow distribution channels are communicated with the sprue bush, and the sprue bush is positioned at the intersection of the two flow distribution channels. The heated liquid raw material flows to the flow distribution plate from the sprue bush, reaches the junction of the two flow distribution channels, and then flows to the end parts of the flow distribution channels from the junction.

As a further improvement of the utility model: and discharge ports are arranged at two ends of the branch channel, a discharge pipe is arranged at each discharge port, and the discharge pipe penetrates into the fixed die core from the fixed die plate. The discharge gate is located the subchannel both sides, has 4 discharge gates in total, and liquid plastics flow to discharging pipe, cover half core from the discharge gate again, and liquid plastics is final in the die cavity shaping.

As a further improvement of the utility model: the splitter plate is provided with a plurality of heating channels parallel to the splitter channels. The liquid plastic flows into the die cavity for molding, and if the temperature of the liquid plastic is lower, the conditions of poor fluidity and insufficient die cavity can occur; therefore, a heating channel is arranged beside the sub-channel, and an electric heating wire is arranged in the heating channel and can heat the flow distribution plate and the liquid plastic.

As a further improvement of the utility model: the fixed die plate is provided with an inclined guide post, the movable die plate is provided with a slide block which can be inserted into the movable die core, and the slide block is connected with the inclined guide post in a sliding manner. After the mold is opened, the inclined guide post can drive the slide block to move, so that the slide block is separated from an electrical element in the mold cavity, and core-pulling and demolding are realized.

As a further improvement of the utility model: the sliding block is provided with a forming rod and a forming block. The forming rod and the forming block are both used for forming the side structure of the electrical component.

As a further improvement of the utility model: the forming rod comprises a rod body and a rod head, the rod body is arranged in the fixing hole, a screw rod for pressing the rod body is further arranged in the fixing hole, and the screw rod is in threaded connection with the fixing hole. The forming rod is firstly arranged in the fixing hole, the rod head extends out of the fixing hole, the rod body is arranged in the fixing hole, then the screw rod is screwed in the fixing hole, the screw rod props against the rod body, and then the forming rod is fixedly connected with the sliding block.

As a further improvement of the utility model: the movable mold core is provided with a limiting groove, the sliding block is provided with a limiting block, and the limiting block is connected with the limiting groove in a sliding mode. The limiting block is always positioned in the limiting groove, so that the sliding block cannot deviate from a preset position in the moving process.

As a further improvement of the utility model: still include a plurality of protecting covers, it is a plurality of the protecting cover install respectively in the periphery of fixed die plate, movable mould board, fixed die plate, movable mould board be equipped with the cover half respectively and cross the wire casing, the movable mould crosses the wire casing. The fixed die wire passing groove and the movable die wire passing groove can be filled with articles such as wires and electrical appliances, and the protective cover can cover the articles, so that the protective cover can play a role in attractive appearance and protection.

As a further improvement of the utility model: the fixed rod and the stub bar ejector rod penetrate through the driving top plate, the driven top plate and the movable mold core, and the sleeve penetrates through the driven top plate and the movable mold core.

The utility model has the advantages of reasonable design, simple structure, uncomplicated manufacturing process, reduced workload of workers and reduced labor cost. Liquid plastic flows into the die cavity from the fixed die plate and the fixed die core, and after the die cavity is filled with the liquid plastic, a part of the liquid plastic flows into the flash tank, so that the die cavity can be completely filled with the plastic, and the molded electric appliance element does not have the defects of shrinkage and the like. Before demolding, the driving top plate and the stub bar ejector rod move for a small distance, so that the stub bar on the side face of the electrical element can be cut off by the punching part of the stub bar ejector rod, and workers do not need to cut off the stub bar. After the mold is separated, the lower mold component moves away from the upper mold component; the driving top plate then continues to move to meet the driven top plate, whereupon the driven top plate also begins to move, and finally the sleeve ejects the electrical component from the mold cavity. The punching part is inclined to make the cut sharp. The fixing rod can play a role in guiding the sleeve, and the fixing rod at the end positioned in the die cavity has a forming function.

Drawings

FIG. 1 is a schematic view of an injection molded part;

FIG. 2 is an exploded view of the present invention from a first perspective;

FIG. 3 is an exploded view of the present invention from a second perspective;

FIG. 4 is an exploded view of the ejection mechanism;

FIG. 5 is a schematic cross-sectional view of a diverter plate;

FIG. 6 is an exploded view of the slider;

fig. 7 is a schematic cross-sectional view of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1-7: the utility model provides an electrical components's injection mold, which comprises an upper die assembly, lower die assembly, ejection mechanism, it is equipped with fixed die plate 2 and cover half core 3 to go up the die assembly, lower die assembly is equipped with movable mould board 6 and movable mould core 4, movable mould core 4 is equipped with die cavity 42 and flash tank 41, ejection mechanism is equipped with initiative roof 9, driven roof 8, base 7, initiative roof 9 sets up with 8 intervals of driven roof, base 7 is equipped with dead lever 70, driven roof 8 is equipped with the cover and overlaps at the outside sleeve pipe 80 of dead lever 70, initiative roof 9 is equipped with stub bar ejector pin 90, stub bar ejector pin 90 is equipped with the die-cut portion 91 of slope, die-cut portion 91 is located the juncture of die cavity 42 and flash tank 41.

The fixing rod 70 and the stub bar ejector rod 90 penetrate through the driving top plate 9, the driven top plate 8 and the movable mold core 4, and the sleeve 80 penetrates through the driven top plate 8 and the movable mold core 4. The fixing rod 70 is kept still all the time, the sleeve 80 can move along with the driven top plate 8, and after the die is opened, the sleeve 80 can eject the electrical component 100 from the die cavity 42.

The working principle of the utility model is as follows: the injection molding machine is provided with an oil cylinder which can drive the driving top plate 9 to move, so that the blanking part 91 of the stub bar ejector rod 90 can cut off the stub bar 101 in the flash groove 41; because the driving top plate 9 and the driven top plate 8 are arranged at intervals, only a small amount of displacement is generated in the process of cutting off the stub bar 101 by the stub bar push rod 90, and the driving top plate 9 cannot touch the driven top plate 8; then the upper die assembly is fixed, and the lower die assembly moves to leave the upper die assembly; the driving top plate 9 continues to move to touch the driven top plate 8, so that the driven top plate 8 also starts to move, finally the sleeve 80 ejects the electrical component 100 from the die cavity 42, and the driven top plate 8 is also provided with an ejector rod which can eject the stub bar 101 from the flash tank 41.

The upper die assembly is provided with a sprue bush 20 and a flow distribution plate 1, the flow distribution plate 1 is provided with two flow distribution channels 12 which are distributed in an X-shaped cross mode, the flow distribution channels 12 are communicated with the sprue bush 20, and the sprue bush 20 is located at the intersection of the two flow distribution channels 12.

Discharge ports 13 are formed in two ends of the branch flow channel 12, a discharge pipe 10 is arranged at the discharge port 13, and the discharge pipe 10 penetrates into the fixed mold core 3 from the fixed mold plate 2.

The manifold 1 is provided with a plurality of heating channels 11 parallel to the manifold 12.

The fixed die plate 2 is provided with an inclined guide post 22, the movable die plate 6 is provided with a slide block 5 which can be inserted into the movable die core 4, and the slide block 5 is connected with the inclined guide post 22 in a sliding way.

The slider 5 is provided with a forming rod 53 and a forming block 52.

The sliding block 5 is provided with a fixing hole 51, the molding rod 53 comprises a rod body 54 and a rod head 55, the rod body 54 is arranged in the fixing hole 51, a screw 56 for pressing the rod body 54 is also arranged in the fixing hole 51, and the screw 56 is in threaded connection with the fixing hole 51.

The movable mold core 4 is provided with a limiting groove 43, the slide block 5 is provided with a limiting block 50, and the limiting block 50 is connected with the limiting groove 43 in a sliding manner.

Still include a plurality of protecting covers 200, a plurality of protecting covers 200 are installed respectively in the periphery of fixed die plate 2, movable mould board 6, and fixed die plate 2, movable mould board 6 are equipped with cover half wire through groove 21, movable mould wire through groove 61 respectively.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides an electrical components's injection mold, includes last mould subassembly, lower mould subassembly, ejection mechanism, its characterized in that last mould subassembly be equipped with fixed die plate and fixed die core, lower mould subassembly be equipped with movable mould board and movable die core, movable die core be equipped with die cavity and flash tank, ejection mechanism be equipped with initiative roof, driven roof, base, initiative roof and driven roof interval set up, the base be equipped with the dead lever, driven roof be equipped with the sleeve pipe of cover outside the dead lever, the initiative roof be equipped with the stub bar ejector pin, the stub bar ejector pin be equipped with the die-cut portion of slope, die-cut position in die cavity and flash tank's juncture.

2. An injection mold for electrical components as claimed in claim 1, wherein the upper mold assembly has a sprue bushing and a splitter plate, the splitter plate has two branches distributed crosswise in an "X" shape, the branches are connected to the sprue bushing, and the sprue bushing is located at the junction of the two branches.

3. The injection mold for electrical components of claim 2, wherein the two ends of the branch channel are provided with discharge ports, the discharge ports are provided with discharge pipes, and the discharge pipes penetrate from the fixed mold plate to the fixed mold core.

4. An injection mold for electrical components as claimed in claim 2, wherein said manifold has a plurality of heating channels parallel to said manifold.

5. An injection mold for electrical components as claimed in claim 1, wherein said stationary platen is provided with inclined guide posts, said movable platen is provided with slide blocks insertable into said movable platen, and said slide blocks are slidably connected to said inclined guide posts.

6. An injection mold for electrical components as claimed in claim 5, wherein the slide block is provided with a forming rod and a forming block.

7. The injection mold for electric elements of claim 6, wherein the sliding block has a fixing hole, the forming rod comprises a rod body and a rod head, the rod body is arranged in the fixing hole, a screw rod for pressing the rod body is further arranged in the fixing hole, and the screw rod is in threaded connection with the fixing hole.

8. The injection mold for electrical components of claim 5, wherein the movable mold core is provided with a limiting groove, the sliding block is provided with a limiting block, and the limiting block is slidably connected with the limiting groove.

9. An injection mold for electrical components as claimed in claim 1, further comprising a plurality of protecting covers, wherein the protecting covers are respectively installed on the outer peripheries of the fixed mold plate and the movable mold plate, and the fixed mold plate and the movable mold plate are respectively provided with a fixed mold wire passing groove and a movable mold wire passing groove.

10. The injection mold for electrical components of claim 1, wherein the fixing rod and the stub bar post rod penetrate through the driving top plate, the driven top plate and the movable mold core, and the sleeve penetrates through the driven top plate and the movable mold core.

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