CN112776257B

CN112776257B - Double-color injection mold for producing household appliance shell

Info

Publication number: CN112776257B
Application number: CN202011573443.1A
Authority: CN
Inventors: 熊友家; 陈杰; 叶伟; 李忠阳; 伍建
Original assignee: Suzhou Aifute Precision Mould Co ltd
Current assignee: Suzhou Aifute Precision Mould Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2023-04-18
Anticipated expiration: 2040-12-24
Also published as: CN112776257A

Abstract

The invention discloses a double-color injection mold for producing a household appliance shell, which comprises an upper mold and a lower mold, wherein the upper mold is matched with the lower mold, the top of the upper mold is fixedly connected with a connecting plate, two sides of the inner part of the upper mold are respectively provided with an injection molding hole, the top of the injection molding hole is communicated with a feeding nozzle, the bottom of the lower mold is fixedly connected with an air cylinder, the bottom of the air cylinder is fixedly connected with a mold base, two sides of the lower mold are respectively and fixedly connected with a sliding block, two sides of the inner wall of the mold base are respectively provided with a sliding groove matched with the sliding block, and the lower mold is in sliding connection with the mold base through the sliding block and the sliding groove. The double-color injection mold for producing the household appliance shell solves the problems that the prior art is still insufficient in sealing performance, leakage is easy to occur during secondary injection molding, a final finished product has certain defects, and the product quality does not reach the standard.

Description

Double-color injection mold for producing household appliance shell

Technical Field

The invention relates to the technical field of production of household appliance shells, in particular to a double-color injection mold for production of household appliance shells.

Background

The double-color injection molding refers to a molding process in which two different materials are injected into the same set of mold, so that the injection molded part is formed by the two materials. Many plastic products, especially interior products of automobiles, need to be made with a layer of soft glue in hard plastics due to requirements of sound insulation, sealing and the like, and the shape of the soft glue can be various, so that the products need to be applied to a double-color injection molding process.

The double-color injection mold is produced in a step injection molding mode when in use, and a mold cavity needs to be adjusted before secondary injection molding, but the prior art has defects in tightness and is easy to leak during secondary injection molding, so that a final finished product has certain defects, and the product quality does not reach the standard.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a double-color injection mold for producing a household appliance shell, which solves the problems that the prior art has defects in sealing property, is easy to leak during secondary injection, causes certain defects in a final finished product and does not reach the quality standard.

In order to achieve the purpose, the invention is realized by the following technical scheme: a double-color injection mold for producing a household appliance shell comprises an upper mold and a lower mold, wherein the upper mold and the lower mold are matched, the top of the upper mold is fixedly connected with a connecting plate, both sides of the connecting plate are provided with threaded holes, and the inner threads of the threaded holes are connected with bolts; mounting grooves are formed in the two sides of the bottom of the connecting plate, telescopic rods are fixedly connected inside the mounting grooves, and second springs are sleeved on the surfaces of the telescopic rods; the bottom end of the telescopic rod is fixedly connected with a connecting piece, and the bottom of the connecting piece is fixedly connected with a sealing gasket; injection molding holes are formed in the two sides of the inner part of the upper die, and the tops of the injection molding holes are communicated with feeding nozzles;

the bottom of the lower die is fixedly connected with an air cylinder, the bottom of the air cylinder is fixedly connected with a die holder, two sides of the lower die are fixedly connected with sliding blocks, two sides of the inner wall of the die holder are provided with sliding grooves matched with the sliding blocks, the bottom of the inner wall of each sliding groove is fixedly connected with a first spring, and the top end of the first spring is fixedly connected with the bottom of the sliding block; the lower mould passes through slider and spout and die holder sliding connection, the cavity has been seted up to the inside of lower mould, the left side intercommunication of cavity has the inlet tube, the right side intercommunication of cavity has the drain pipe to the bottom of inlet tube and drain pipe all runs through the lower mould and extends to its bottom.

Preferably: the mounting holes matched with the bolts are formed in the two sides of the top of the die holder, and a bottom plate is fixedly connected to the bottom of the die holder.

Advantageous effects

The invention provides a double-color injection mold for producing a household appliance shell. The method has the following beneficial effects:

(1) This double-colored injection mold is used in household electrical appliances shell production, when moulding plastics, sealed setting up of filling up can play the effect of sealed die cavity, and especially when the secondary is moulded plastics, the cylinder drives lower mould and preliminary shaping's product and descends, then carries out the secondary through another injection hole and moulds plastics, and when the lower mould descends, under the effect of telescopic link and second spring, sealed pad contacts with the lower mould all the time, ensures its leakproofness that can keep the die cavity all the time.

(2) This double-colored injection mold is used in household electrical appliances shell production can use through bolt and mounting hole with connecting plate and die holder looks fixed, and practical reasonable in structure uses easy operation convenience to through the setting of first spring, the process that makes the lower mould descend is more steady, guarantees that preliminary finished product can not warp before the secondary moulds plastics.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a partial enlarged view of the invention at a in fig. 1.

In the figure: the device comprises an upper die 1, a lower die 2, an air cylinder 3, a die holder 4, a sliding block 5, a sliding groove 6, a first spring 7, a connecting plate 8, an injection molding hole 9, a feeding nozzle 10, a threaded hole 11, a bolt 12, a mounting groove 13, a telescopic rod 14, a second spring 15, a connecting piece 16, a sealing gasket 17, a mounting hole 18, a bottom plate 19, a cavity 20, a water inlet pipe 21 and a water outlet pipe 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a double-color injection mold for producing a household appliance shell comprises an upper mold 1 and a lower mold 2, wherein the upper mold 1 is matched with the lower mold 2, the top of the upper mold 1 is fixedly connected with a connecting plate 8, injection molding holes 9 are formed in two sides of the inner part of the upper mold 1, and the tops of the injection molding holes 9 are communicated with a feeding nozzle 10;

the bottom fixedly connected with cylinder 3 of lower mould 2 to the bottom fixedly connected with die holder 4 of cylinder 3, lower mould 2 obtain the equal fixedly connected with slider 5 in both sides, and the spout 6 with slider 5 looks adaptation is all seted up to the both sides of 4 inner walls of die holder, and lower mould 2 passes through slider 5 and spout 6 and die holder 4 sliding connection.

Further: mounting groove 13 has all been seted up to the both sides of 8 bottoms of connecting plate to the inside fixedly connected with telescopic link 14 of mounting groove 13, the surface cover of telescopic link 14 is equipped with second spring 15, the bottom fixedly connected with connecting piece 16 of telescopic link 14, and the sealed pad 17 of bottom fixedly connected with of connecting piece 16.

And further: cavity 20 has been seted up to the inside of lower mould 2, and the left side intercommunication of cavity 20 has inlet tube 21, and the right side intercommunication of cavity 20 has drain pipe 22 to the bottom of inlet tube 21 and drain pipe 22 all runs through lower mould 2 and extends to its bottom.

And further: the bottom fixedly connected with first spring 7 of spout 6 inner wall to the top of first spring 7 and the bottom fixed connection of slider 5.

Further: threaded holes 11 are formed in the two sides of the connecting plate 8, bolts 12 are connected to the threaded holes 11 in a threaded mode, mounting holes 18 matched with the bolts 12 are formed in the two sides of the top of the die holder 4, and a bottom plate 19 is fixedly connected to the bottom of the die holder 4.

When the connecting plate is used, the connecting plate 8 and the die holder 4 are fixed through the bolts 12 and the mounting holes 18, then injection molding is carried out on the inner part of a die cavity between the upper die 1 and the lower die 2 through one injection molding hole 9, the cylinder 3 is started after the initial molding of the connecting plate, so that the cylinder drives the lower die 2 and a product which is initially molded to descend, then secondary injection molding is carried out through the other injection molding hole 9, the bolts 12 are unscrewed after the cooling molding of the cylinder, the connecting plate 8 is separated from the die holder 4, and demolding and material taking are carried out;

during injection molding, the sealing gasket 17 plays a role in sealing the mold cavity, particularly, when the lower mold descends during secondary injection molding, the sealing gasket 17 can always keep the tightness of the mold cavity under the action of the telescopic rod 14 and the second spring 15, and the arrangement of the first spring 7 enables the descending process of the lower mold 2 to be more stable, so that a primary finished product is prevented from deforming before secondary injection molding;

during injection molding, cold water is injected into the cavity 20 through the water inlet pipe 21, the cold water is discharged through the water discharge pipe 22 after filling the cavity 20, and the cold water exchanges heat with the raw materials in the cavity 20 to accelerate cooling molding of the cavity, so that injection molding efficiency is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a double-colored injection mold is used in production of household electrical appliances shell, includes mould (1) and lower mould (2), its characterized in that: the upper die (1) is matched with the lower die (2), the top of the upper die (1) is fixedly connected with a connecting plate (8), both sides of the connecting plate (8) are provided with threaded holes (11), and the inner threads of the threaded holes (11) are connected with bolts (12); mounting grooves (13) are formed in two sides of the bottom of the connecting plate (8), a telescopic rod (14) is fixedly connected inside each mounting groove (13), and a second spring (15) is sleeved on the surface of each telescopic rod (14); the bottom end of the telescopic rod (14) is fixedly connected with a connecting piece (16), and the bottom of the connecting piece (16) is fixedly connected with a sealing gasket (17); injection molding holes (9) are formed in two sides of the inner part of the upper die (1), and the tops of the injection molding holes (9) are communicated with a feeding nozzle (10);

the bottom of the lower die (2) is fixedly connected with an air cylinder (3), the bottom of the air cylinder (3) is fixedly connected with a die holder (4), two sides of the lower die (2) are fixedly connected with sliders (5), two sides of the inner wall of the die holder (4) are respectively provided with a sliding chute (6) matched with the sliders (5), the bottom of the inner wall of the sliding chute (6) is fixedly connected with a first spring (7), and the top end of the first spring (7) is fixedly connected with the bottom of the slider (5); lower mould (2) are through slider (5) and spout (6) and die holder (4) sliding connection, cavity (20) have been seted up to the inside of lower mould (2), the left side intercommunication of cavity (20) has inlet tube (21), the right side intercommunication of cavity (20) has drain pipe (22) to the bottom of inlet tube (21) and drain pipe (22) all runs through lower mould (2) and extends to its bottom.

2. The two-color injection mold for producing the housing of the household appliance according to claim 1, wherein: the die holder is characterized in that mounting holes (18) matched with the bolts (12) are formed in the two sides of the top of the die holder (4), and a bottom plate (19) is fixedly connected to the bottom of the die holder (4).