CN219806419U

CN219806419U - Double-shot injection mold

Info

Publication number: CN219806419U
Application number: CN202321190570.2U
Authority: CN
Inventors: 林长春
Original assignee: Shenzhen Taixingyuan Technology Co ltd
Current assignee: Shenzhen Taixingyuan Technology Co ltd
Priority date: 2023-05-16
Filing date: 2023-05-16
Publication date: 2023-10-10
Anticipated expiration: 2033-05-16

Abstract

The utility model discloses a double-color injection mold, which belongs to the technical field of injection production molds and comprises a base, wherein a fixed mold is fixedly connected to the base, an ejector plate is slidably arranged in the fixed mold, a cavity is formed in the fixed mold, two openings are formed in the side face of the fixed mold, an injection molding opening is fixedly connected to the fixed mold at the opening, a plurality of fixing rods are fixedly arranged above the fixed mold, a mounting plate is commonly arranged on the plurality of fixing rods, an air cylinder is fixedly arranged on the mounting plate, a mold cover is slidably arranged on the plurality of fixing rods, a plurality of control rods are also rotatably arranged on the top surface of the base, the control rods are simultaneously positioned in the fixed mold and the ejector plate, and a driving mechanism is arranged between the plurality of control rods. Compared with the pressure applied to one end, the pressure is dispersed, so that the machine or the material is prevented from being damaged by excessive pressure, and the pressed injection molding raw material is more uniform through the stress in multiple directions.

Description

Double-shot injection mold

Technical Field

The utility model belongs to the technical field of injection production molds, and particularly relates to a double-shot injection mold.

Background

The double-color mold, namely two plastic materials are molded on the same injection molding machine and are molded in two times, but the product is only ejected once, and the general molding process is also called double-material injection molding, is usually completed by a set of molds, and a special double-color injection molding machine is needed, so that the double-color mold is increasingly popular in the market, and the process can lead the appearance of the product to be more beautiful, is easy to change colors and can be used without spraying, but has high manufacturing cost and high technical requirement.

The Chinese patent with the publication number of CN218314855U discloses a double-shot injection mold, which comprises a lower mold and a mold cover, the surface of the lower mold is provided with a mold cavity, the side of the lower mold is provided with a first injection molding pipe, the side of the lower mold is provided with a second injection molding pipe, the bottom of the mold cover is provided with an assembly cavity, the surface of the mold cover is fixedly provided with a cylinder, the output end of the cylinder is fixedly provided with a piston rod, the piston rod movably penetrates through the mold cover to the assembly cavity, the bottom of the piston rod is fixedly provided with an adjusting plate, the bottom of the adjusting plate is fixedly provided with an anti-sticking plate, the problem that the blank can produce larger shrinkage amount, the final product is poor, the thickness of each color injection molding product is difficult to ensure, and the processing quality of the injection molding product is difficult to meet the requirements of customers is solved through the matching of the adjusting plate and the cylinder.

In the above-mentioned scheme, through the high adjustability that utilizes the regulating plate, be convenient for adjust the thickness of each colour injection molding, reach the advantage of production demand, but when the operation process, can only compress or stretch to a face of product, in actual production process, need to comprehensively consider the inflation and the shrink situation of a plurality of faces when moulding plastics, compress only to a face, the pressure concentrates on the one side of pressurized, can cause the raw materials of moulding plastics and distribute inhomogeneous, the problem that makes the material distribute inhomogeneous after having exerting pressure.

For this reason, we propose a two-shot injection mold to solve the above problems.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, only one surface of an injection molding product is compressed, the pressure is concentrated on the pressed surface, the distribution of injection molding raw materials is possibly uneven, and the distribution of the materials is uneven after the pressure is applied.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

double-colored injection mold, the on-line screen storage device comprises a base, fixedly connected with cover half utensil on the base, the cover half utensil is interior to slide and is provided with the liftout plate, the cavity has been seted up in the cover half utensil, two openings have been seted up to the side of cover half utensil, the cover half utensil is at opening part fixedly connected with mouth of moulding plastics, the cover half utensil top is fixedly provided with a plurality of dead levers, and is a plurality of be provided with a mounting panel jointly on the dead lever, fixedly on the mounting panel is provided with the cylinder, a plurality of slide on the dead lever and be provided with the mould lid, the base top surface still rotates and is provided with many control levers, the control lever is located cover half utensil and liftout plate simultaneously, and is a plurality of be provided with actuating mechanism between the control lever.

Through setting up fixed mould, ejector plate and mould lid, utilize the mouth of moulding plastics to moulding plastics in to the cavity, under the cooperation of ejector plate and mould lid, can change the volume of the upper and lower two sides of cavity simultaneously for the material distribution of injection moulding product is more even.

Preferably, the control rod comprises a round rod I which is rotatably arranged on the base, and the top surface of the round rod I is fixedly connected with a ball screw and a round rod II in sequence.

By arranging the control rod, the moving direction of the ejection plate is controlled, and the ejection of the injection molding product and the pressing in the middle process are facilitated.

Preferably, the fixed die is fixedly provided with a plurality of limiting holes, the round rod I is rotatably arranged in the limiting holes, the ejector plate is rotatably provided with a plurality of screw nuts, and the screw nuts are in threaded connection with the ball screw.

Through setting up screw-nut and ball screw, realized driving screw-nut and reciprocate, and then drive the liftout plate and remove, through setting up spacing hole, realized making round bar one at spacing downthehole rotation, be favorable to increasing the stability of this device.

Preferably, the driving mechanism comprises a motor fixedly arranged at the bottom of the base, the output end of the motor is fixedly connected with one round rod I, two round rods I are fixedly provided with chain wheels, and a chain is arranged between the two chain wheels.

Through setting up actuating mechanism, realized driving the both ends of liftout plate simultaneously and remove, make the liftout plate more smooth and easy when reciprocate.

Preferably, the bottom surface of the fixed die at the cavity is fixedly provided with a bump, and the ejector plate is provided with a notch corresponding to the bump.

By arranging the convex blocks and the gaps, better tightness is realized when the cavity is sealed.

Preferably, the cylinder comprises a machine body fixedly arranged on the mounting plate, a piston is slidably arranged in the machine body, and the piston is fixedly arranged on the top surface of the die cover.

By arranging the air cylinder, the mould cover is pushed to move up and down.

Preferably, a closing cover is fixedly arranged on the side face of the die cover, and the closing cover (20) is propped against the fixed die.

Through setting up the closing cap, realized spacing to the mould lid for the mould lid can be sealed the cavity.

Preferably, a limiting block is fixedly arranged on the top surface of the first round rod.

Through setting up the stopper, realized the spacing to the control lever, prevent that ball screw from rotating too fast and make round bar skew spacing hole.

In summary, according to the utility model, the fixed mold, the ejector plate and the mold cover are arranged, the fixed mold is fixed differently, and the mold cover and the ejector plate respectively give pressure at the upper end and the lower end of the cavity, so that compared with the pressure only given at one end, the pressure is dispersed, the excessive pressure is prevented from damaging a machine or a material, and the pressed injection molding raw material is more uniform through the stress in multiple directions.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a structure of a fixed mold in the present utility model;

FIG. 3 is a schematic diagram of a driving mechanism according to the present utility model;

FIG. 4 is a schematic view of an ejector plate structure according to the present utility model;

FIG. 5 is a schematic view of a mold cover and ejector plate structure of the present utility model;

fig. 6 is a schematic view of a mold cover according to the present utility model.

In the figure: 1. a base; 2. setting a mold; 3. an ejector plate; 4. a cavity; 5. an injection molding port; 6. a fixed rod; 7. a mounting plate; 8. a mold cover; 9. a control lever; 91. a round rod I; 92. a ball screw; 93. a round rod II; 10. a limiting hole; 11. a screw nut; 12. a motor; 13. a sprocket; 14. a chain; 15. a bump; 16. a notch; 17. a body; 18. a piston; 19. a limiting block; 20. closing the cover.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In order to better understand the above technical solutions, the following description will refer to the drawings and specific embodiments.

Referring to fig. 1-2, a dual-color injection mold comprises a base 1, a fixed mold 2 is fixedly connected to the base 1, an ejector plate 3 is slidably arranged in the fixed mold 2, a cavity 4 is arranged in the fixed mold 2, two openings are formed in the side face of the fixed mold 2, an injection port 5 is fixedly connected to the fixed mold 2 at the opening, a plurality of fixing rods 6 are fixedly arranged above the fixed mold 2, a mounting plate 7 is jointly arranged on the plurality of fixing rods 6, an air cylinder is fixedly arranged on the mounting plate 7, a mold cover 8 is slidably arranged on the plurality of fixing rods 6, a plurality of control rods 9 are further rotatably arranged on the top surface of the base 1, the control rods 9 are simultaneously positioned in the fixed mold 2 and the ejector plate 3, and a driving mechanism is arranged between the plurality of control rods 9.

When injection molding work goes on to need change injection molding nozzle, perhaps when injection molding work just accomplishes, the temperature difference between cavity 4 and the external world is great, the blank can produce great shrinkage volume, can lead to the production of bubble, still can make the density difference of product great, cause the quality decline of product, consequently, after the injection molding work in every section process is accomplished, rise through removing ejector plate 3 and mould lid 8 decline, can compress the upper and lower both ends of blank in cavity 4 simultaneously, make the blank atress in the cavity 4 comparatively even, the quality of final product has been improved, after all injection molding work is accomplished, ejector plate 3 and mould lid 8 all rise, the injection molding piece of cavity 4 inside is supported out by ejector plate 3, be convenient for take out the injection molding piece.

Referring to fig. 1 to 3, the control rod 9 includes a first round rod 91 rotatably disposed on the base 1, a ball screw 92 and a second round rod 93 are fixedly connected to a top surface of the first round rod 91 in sequence, and after the first round rod 91 rotates, the first round rod 91 drives the ball screw 92 and the second round rod 93 to rotate in the same direction.

Referring to fig. 1-2, a plurality of limiting holes 10 are fixedly formed in the fixed die 2, a round rod 91 is rotatably arranged in the limiting holes 10, a plurality of screw nuts 11 are rotatably arranged on the ejector plate 3, the screw nuts 11 are in threaded connection with the ball screw 92, the round rod 91 rotates in the limiting holes 10, the whole control rod 9 cannot deviate, the stability of the structure is improved, the ball screw 92 rotates to drive the screw nuts 11 to ascend and descend, and the screw nuts 11 drive the ejector plate 3 to move up and down.

Referring to fig. 3, the driving mechanism includes a motor 12 fixedly disposed at the bottom of the base 1, an output end of the motor 12 is fixedly connected to one of the round bars 91, chain wheels 13 are fixedly disposed on the two round bars 91, a chain 14 is disposed between the two chain wheels 13, the motor 12 is started, an output end of the motor 12 drives the round bar 91 connected with the motor to rotate, one of the round bars 91 rotates to drive the other round bar 91 to rotate, and then the ejector plate 3 is controlled to move up and down from two ends of the ejector plate 3, and two ends are stressed, so that the ejector plate 3 moves more stably.

Referring to fig. 4-5, the bottom surface of the cavity 4 of the fixed mold 2 is fixedly provided with a bump 15, the ejector plate 3 is provided with a notch 16 corresponding to the bump 15, the bump 15 is always clamped in the notch 16 by arranging the bump 15 and the notch 16, and the lower part of the cavity 4 is always in a sealing state, so that the possibility of leakage of injection molding raw materials is reduced, and the practicability of the device is increased.

Referring to fig. 1, 2 and 6, the cylinder includes a body 17 fixedly arranged on the mounting plate 7, a piston 18 is slidably arranged in the body 17, the piston 18 is fixedly arranged on the top surface of the die cover 8, the cylinder is started, the piston 18 drives the die cover 8 to move up and down, when the die cover 8 moves into the cavity 4, the die cover 8 and injection molding materials in the cavity 4 are in contact with each other, the upper part of the injection molding materials is pressed, and double-sided lamination is carried out together with the ejector plate 3.

Referring to fig. 1, 2 and 6, the fixed closing cap 20 that is provided with in mould lid 8 side, closing cap 20 offsets with cover half mould 2 top surface, through setting up closing cap 20, has realized spacing to mould lid 8 for mould lid 8 can be sealed cavity 4 top surface, is provided with the fillet in the bottom surface of mould lid 8 simultaneously, makes things convenient for mould lid 8 to get into in the cavity 4.

Referring to fig. 1-2, the top surface of the first round rod 91 is fixedly provided with a limiting block 19, so that the control rod 9 is limited, the ball screw 92 is prevented from rotating too fast, the first round rod 91 is offset out of the limiting hole 10, and the stability of the device is improved.

Working principle:

when the injection nozzle needs to be converted, in order to reduce adverse effects caused by volume change caused by temperature change, the ejector plate 3 is moved to rise through the driving mechanism, the cylinder drives the die cover 8 to descend, and the upper end and the lower end of the blank in the cavity 4 can be compressed simultaneously, so that the stress of the blank in the cavity 4 is uniform, and after injection molding, the driving mechanism moves the ejector plate 3 to rise, and the cylinder drives the die cover 8 to rise, so that an injection molding piece can be ejected.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. Double-colored injection mold, including base (1), its characterized in that, fixedly connected with cover half utensil (2) on base (1), be provided with ejector plate (3) in the cover half utensil (2) are slided, cavity (4) have been seted up in cover half utensil (2), two openings have been seted up to the side of cover half utensil (2), cover half utensil (2) are in opening part fixedly connected with injection molding mouth (5), cover half utensil (2) top is fixed and is provided with a plurality of dead levers (6), a plurality of be provided with a mounting panel (7) on dead lever (6) jointly, fixedly on mounting panel (7) be provided with the cylinder, a plurality of slide on dead lever (6) are provided with mould lid (8), base (1) top surface still rotates and is provided with many control levers (9), control lever (9) are located simultaneously in cover half utensil (2) and ejector plate (3), a plurality of be provided with actuating mechanism between control lever (9).

2. The bicolor injection mold according to claim 1, wherein the control rod (9) comprises a round rod one (91) rotatably arranged on the base (1), and a ball screw (92) and a round rod two (93) are fixedly connected to the top surface of the round rod one (91) in sequence.

3. The double-shot injection mold according to claim 2, wherein a plurality of limiting holes (10) are fixedly arranged on the fixed mold (2), the round rod I (91) is rotatably arranged in the limiting holes (10), a plurality of screw nuts (11) are rotatably arranged on the ejector plate (3), and the screw nuts (11) are in threaded connection with the ball screw (92).

4. The double-shot injection mold according to claim 2, wherein the driving mechanism comprises a motor (12) fixedly arranged at the bottom of the base (1), the output end of the motor (12) is fixedly connected with one of the round bars (91), chain wheels (13) are fixedly arranged on both of the round bars (91), and a chain (14) is arranged between the two chain wheels (13).

5. The bicolor injection mold according to claim 1, wherein the bottom surface of the cavity (4) of the fixed mold (2) is fixedly provided with a bump (15), and the ejector plate (3) is provided with a notch (16) corresponding to the bump (15).

6. The bicolor injection mold according to claim 1, wherein the cylinder comprises a machine body (17) fixedly arranged on the mounting plate (7), a piston (18) is slidably arranged in the machine body (17), and the piston (18) is fixedly arranged on the top surface of the mold cover (8).

7. The double-shot injection mold according to claim 2, characterized in that a closing cap (20) is fixedly arranged on the side surface of the mold cap (8), and the closing cap (20) is propped against the fixed mold (2).

8. The double-shot injection mold according to claim 2, wherein a stopper (19) is fixedly provided on the top surface of the round bar one (91).