CN212860247U - Injection mold - Google Patents

Abstract

The utility model relates to an injection mold, it includes mould and lower mould, goes up the mould and has the shaping district between the relative one side of lower mould, still including setting up the movable mould in the shaping district, the movable mould sets up in shaping district inner wall, and the movable mould encloses with the shaping district and closes and form the die cavity, is provided with on the lower mould to be used for keeping away from the ejection mechanism that the shaping district direction slided with the movable mould. This application has the effect of conveniently carrying out the drawing of patterns.

Description

Injection mold

Technical Field

The application relates to the field of molds, in particular to an injection mold.

Background

Currently, many products are produced by injection molding with an injection mold. In the injection molding process, the injection mold consists of an upper mold and a lower mold, the upper mold and the lower mold are closed to form a pouring system and a cavity during injection molding, the upper mold and the lower mold are separated during mold opening, and demolding is conveniently carried out through the ejector pin assembly to take out a product.

Along with market demands, the structure of an injection molding part is more and more complex, the injection molding part is mostly a thin-wall shell structure with multiple curved surfaces and a thin-wall body, and how to smoothly demold in the process of producing the injection molding part becomes one of important factors influencing product quality and manufacturing cost. As shown in figure 1, the injection molding base is symmetrical, because the upper parts at the two ends of the injection molding base are special-shaped shells inclining outwards, and the middle part of the injection molding base is a plane part, when the injection molding base is demolded, the shells inclining outwards interfere with a cavity of an upper die to cause a workpiece to be taken away by the upper die, when a worker takes out the injection molding from the upper die, the difficulty is high, and the product is easy to damage, so that the improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to facilitate demolding, the present application provides an injection mold.

The application provides an injection mold adopts following technical scheme: the utility model provides an injection mold, includes mould and lower mould, go up the mould and have the shaping district between the relative one side of lower mould, still including setting up the movable mould in the shaping district, the movable mould sets up in shaping district inner wall, the movable mould encloses with the shaping district and closes and form the die cavity, be provided with on the lower mould and be used for the ejection mechanism that slides the movable mould towards keeping away from the shaping district direction.

Through adopting above-mentioned technical scheme, enclose to close by the inboard of movable mould and the shaping district and form the die cavity, after the injection moulding article is moulded in the die cavity, the slope outside of injection moulding article is moulded between movable mould and last mould, consequently can open earlier the mould, and can not take away the injection moulding article, then ejecting towards the direction of keeping away from the die cavity with movable mould by ejection mechanism, alright take out the injection moulding article, realize the effect of convenient drawing of patterns.

Preferably, the movable mold moves obliquely in a resultant force direction between the outside of the molding area and the upper side, and when the movable mold moves obliquely upward, the movable mold holds the outside of the injection molding and ejects the injection molding from the cavity of the lower mold.

Through adopting above-mentioned technical scheme, when the drawing of patterns, the slope outside that the movable mould can hold the article of moulding plastics, will mould plastics the article slope upwards from the shaping of lower mould in the district liftout, and can reduce the displacement of movable mould.

Preferably, still include the interval and set up the mounting panel in the lower mould below and slide the push pedal of setting between mounting panel and lower mould, ejection mechanism includes the spout that guide bar, slider and level set up, the guide bar slope outwards just slides and sets up on the lower mould, the upper end and the movable mould of guide bar are connected, the lower extreme is connected with the slider, the guide bar slides along its self axis direction, the spout sets up in the push pedal, the slider slides in the spout, works as the push pedal is when reciprocating, the slider slides along the spout.

Through adopting above-mentioned technical scheme, when upwards moving the push pedal through external force, can drive the spout rebound for the slider takes place to slide in the spout, and the guide bar slides in lower mould along its axis direction, drives movable mould at last and moves towards outside and the direction of top resultant force.

Preferably, still including setting up the ejector pin subassembly that is used for carrying out ejecting to the middle part plane part of the article of moulding plastics on the push pedal, ejector pin subassembly includes that a plurality of lower extremes are fixed on the push pedal, the upper end extends to the ejector pin of the upper surface of lower mould, the ejector pin slides with the lower mould and is connected, and slides along vertical direction.

Through adopting above-mentioned technical scheme, when the drawing of patterns, when driving the push pedal through external force and remove, can drive the upper end of each ejector pin and stretch out the upper surface of lower mould, the middle part plane portion from the article of moulding plastics pushes up to ejecting the article of moulding plastics from the die cavity of lower mould.

Preferably, the sliding grooves are symmetrically arranged in two, openings of the two sliding grooves are oppositely arranged, and two sides of the sliding block respectively slide in the two sliding grooves.

Through adopting above-mentioned technical scheme, the both sides of slider slide in two spouts that the opening is in opposite directions, can make the slider more steady in sliding of spout.

Preferably, the sliding block is detachably connected with the guide rod, and the movable die is also detachably connected with the guide rod.

Through adopting above-mentioned technical scheme, can make things convenient for installation and change between guide bar and movable mould, the slider.

Preferably, the lower mould upper surface is provided with the constant head tank, the lower extreme joint of movable mould is in the constant head tank, and works as when the movable mould removes, the lower extreme lateral wall of movable mould slides along the constant head tank lateral wall.

Through adopting above-mentioned technical scheme, when the guide bar area movable mould removed, the lower extreme outside of movable mould can slide along the inner wall of constant head tank for sliding of movable mould is more steady.

Preferably, each movable mold is correspondingly provided with at least one ejection mechanism.

Through adopting above-mentioned technical scheme, set up at least one ejection mechanism, can be more steady ejecting the movable mould.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) the molding area is matched with the movable mold to form a cavity, the inclined surface of the injection molding product can be formed between the movable mold and the upper mold, the injection molding product cannot be taken away after the upper mold is opened, and the movable mold can be ejected towards the direction far away from the cavity through the ejection mechanism, so that the effect of facilitating demolding is realized;

(2) through the constant head tank for the movable mould is more steady when removing, and then more steady when the article of will moulding plastics is ejecting, reduces the damage of product.

Drawings

FIG. 1 is a schematic structural view of an injection molded base in the present embodiment;

FIG. 2 is a schematic structural view of the injection mold of the present embodiment;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of the upper mold of the present embodiment;

FIG. 5 is a schematic structural view of the lower mold of the present embodiment;

fig. 6 is a schematic structural view of the ejection mechanism of the present embodiment.

Reference numerals: 1. an upper die; 2. a lower die; 3. moving the mold; 4. a molding cavity; 5. mounting a plate; 6. an upper molding groove; 7. a lower forming groove; 8. an ejection mechanism; 81. a guide bar; 82. a slider; 83. a chute; 9. positioning a groove; 10. pushing the plate; 11. a guide hole; 12. a bolt; 13. a pin shaft; 14. and a push rod.

Detailed Description

The present application is described in further detail below with reference to figures 2-6.

The embodiment of the application discloses an injection mold. Referring to fig. 2 and 3, the mold comprises an upper mold 1, a lower mold 2 and a movable mold 3, wherein a molding area is arranged between opposite surfaces of the upper mold 1 and the lower mold 2, the movable mold 3 is arranged in the molding area between the upper mold 1 and the lower mold 2, and the movable mold 3 and the molding area enclose to form a cavity 4; and mounting plates 5 are provided at intervals below the lower mold 2.

Referring to fig. 4 and 5, the molding section includes an upper molding groove 6 of a lower surface of the upper mold 1 and a lower molding groove 7 of an upper surface of the lower mold 2, and the movable mold 3 is disposed on an inner wall of the molding section. In this scheme, movable mould 3 is provided with two, is located the both ends in shaping district respectively, and movable mould 3 is the inclined plane that extends towards the outside towards one side in shaping district, and movable mould 3 forms the inclined plane of injection moulding article with the cooperation of last shaping groove 6.

Referring to fig. 2 and 5, the movable mold 3 is moved obliquely in a resultant force direction between the outside of the molding zone and the upper side, and an ejector mechanism 8 for driving the movable mold 3 to slide in the resultant force direction is provided in the lower mold 2. When the upper die 1 is opened and the two movable dies 3 move upwards in an inclined mode, the movable dies 3 can support the inclined outer sides of the two ends of the injection molding product and eject the injection molding product out of the lower forming groove 7, and therefore demolding is convenient.

Specifically, a positioning groove 9 is arranged on the upper surface of the lower die 2, and the lower end of the movable die 3 is clamped in the positioning groove 9; one side of the positioning groove 9, which is far away from the forming area, is an inclined plane, and the inclined angle is the inclined moving direction of the movable die 3; consequently, when movable mould 3 removed, movable mould 3's lower extreme lateral wall can paste the constant head tank 9 lateral wall and slide for movable mould 3's removal is more steady, reduces the damage to the article of moulding plastics when the drawing of patterns.

Each movable mould 3 is correspondingly provided with at least one ejection mechanism 8 so as to drive the movable mould 3 in a flat and stable manner. In the scheme, two ejection mechanisms 8 are correspondingly arranged on each movable die 3. Specifically, a push plate 10 is slidably disposed between the mounting plate 5 and the lower mold 2, the push plate 10 moves along a vertical direction, and the push plate 10 can be driven by an external force, such as an air cylinder or an oil cylinder.

The ejection mechanism 8 comprises a guide rod 81, a sliding block 82 and a sliding groove 83 which is horizontally arranged, wherein the guide rod 81 is obliquely outwards arranged on the lower die 2 in a sliding manner; the upper end of the guide rod 81 is connected with the movable die 3, the lower end is connected with the sliding block 82, the guide rod 81 slides along the axis direction of the guide rod, an inclined guide hole 11 is formed in the lower die 2, and the guide rod 81 slides along the axis of the guide hole 11; the sliding groove 83 is arranged on the push plate 10, the sliding block 82 slides in the sliding groove 83, and the sliding groove 83 is arranged along the length direction of the lower die 2; when the push plate 10 moves up and down, the sliding block 82 can slide along the sliding groove 83, and meanwhile, the guide rod 81 can slide in the guide hole 11, so that the movable die 3 is driven to slide towards the side wall along the positioning groove 9.

Specifically, two sliding grooves 83 are symmetrically arranged, openings of the two sliding grooves 83 are arranged in opposite directions, and two sides of the sliding block 82 slide in the two sliding grooves 83 respectively. The sliding block 82 can be locked at the lower end of the guide rod 81 through the bolt 12, and the upper end of the guide rod 81 can be fixedly connected with the movable die 3 through the pin shaft 13, so that the ejection mechanism 8 is convenient to mount and dismount.

Referring to fig. 2 and 5, an ejector pin assembly for ejecting the middle plane part of the injection molding product is arranged on the push plate 10, the ejector pin assembly comprises a plurality of ejector pins 14, the lower ends of the ejector pins are fixed on the push plate 10, the upper ends of the ejector pins extend to the surface of the lower molding groove 7, the ejector pins 14 penetrate through the lower mold 2, and each ejector pin 14 vertically slides in the lower mold 2 along with the push plate 10.

The implementation principle of the injection mold provided by the embodiment of the application is as follows: during molding, the inclined surface of the injection molding product is molded between the movable mold 3 and the upper molding groove 6; when demoulding, the upper die 1 can be opened firstly, the injection molding product cannot be taken away by the upper die 1, and then the push plate 10 is pushed upwards by external force; at this time, each ejector rod 14 can eject the plane part at the middle position of the injection product, and meanwhile, the guide rod 81 slides along the guide hole 11 to drive the movable mold 3 to move towards the outside of the cavity and the resultant force direction above the cavity, so that the inclined outside of the injection product is stably supported upwards, and the effect of facilitating demolding is achieved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (6)

1. The utility model provides an injection mold, includes mould (1) and lower mould (2), its characterized in that: a forming area is arranged between the opposite surfaces of the upper die (1) and the lower die (2), the device also comprises a movable die (3) arranged in the forming area, the movable die (3) is arranged on the inner wall of the forming area, the movable die (3) and the forming area enclose to form a die cavity (4), the lower die (2) is provided with an ejection mechanism (8) used for sliding the movable die (3) towards the direction far away from the molding area, the movable mould (3) moves obliquely towards the resultant force direction of the outer side and the upper side of the forming area, when the movable die (3) moves upwards in an inclined way, the movable die (3) supports the outer side of the injection molding product and ejects the injection molding product out of the cavity of the lower die (2), the upper surface of the lower die (2) is provided with a positioning groove (9), the lower end of the movable die (3) is clamped in the positioning groove (9), and when the movable die (3) moves, the side wall of the lower end of the movable die (3) slides along the side wall of the positioning groove (9).

2. An injection mold according to claim 1, wherein: still set up mounting panel (5) and the push pedal (10) of sliding setting between mounting panel (5) and lower mould (2) in lower mould (2) below including the interval, ejection mechanism (8) include guide bar (81), slider (82) and horizontal spout (83) that set up, guide bar (81) slope outwards and slide the setting on lower mould (2), the upper end and the activity mould (3) of guide bar (81) are connected, the lower extreme is connected with slider (82), guide bar (81) slide along its self axis direction, spout (83) set up on push pedal (10), slider (82) slide in spout (83), work as push pedal (10) are when reciprocating, slider (82) slide along spout (83).

3. An injection mould according to claim 2, characterized in that: still including setting up the ejector pin subassembly that is used for carrying out ejecting to the middle part plane part of moulding plastics on push pedal (10), ejector pin subassembly includes that a plurality of lower extremes are fixed on push pedal (10), ejector pin (14) that the upper end extends to the upper surface of lower mould (2), ejector pin (14) slide with lower mould (2) and are connected, and slide along vertical direction.

4. An injection mould according to claim 2, characterized in that: the sliding grooves (83) are symmetrically arranged, openings of the two sliding grooves (83) are oppositely arranged, and two sides of the sliding block (82) slide in the two sliding grooves (83) respectively.

5. An injection mould according to claim 3, characterized in that: the sliding block (82) is detachably connected with the guide rod (81), and the movable die (3) is also detachably connected with the guide rod (81).

6. An injection mold according to claim 1, wherein: each movable mould (3) is correspondingly provided with at least one ejection mechanism (8).

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