CN113954314A

CN113954314A - Mold with ejection mechanism

Info

Publication number: CN113954314A
Application number: CN202111027562.1A
Authority: CN
Inventors: 吴彬; 李爽; 李超; 焦海波; 郭辉盛
Original assignee: Gree Electric Appliances Inc of Zhuhai; Gree Wuhan Electric Appliances Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Gree Wuhan Electric Appliances Co Ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-01-21

Abstract

The application relates to a mould with ejection mechanism, its characterized in that includes: the ejection mechanism comprises a movable die, a fixed die and an ejection mechanism, wherein the movable die is provided with a die assembly abutting part; the ejection mechanism includes: injection molding butt joint face and movable mould butt joint face. When the mold is closed, the injection molding piece abutting surface of the ejection mechanism abuts against the injection molding piece, and the movable mold abutting surface abuts against the movable mold. Meanwhile, the ejection mechanism can elastically stretch in the ejection direction. Therefore, when the die is closed, the movable die can compress the ejection mechanism to accumulate elastic potential energy, the ejection mechanism releases the elastic potential energy to eject the injection molding piece when the die is separated, the injection molding piece is ejected by utilizing the elastic force of the ejection mechanism, and the driving structure is simple.

Description

Mold with ejection mechanism

Technical Field

The application relates to the technical field of injection mold design, in particular to a mold with an ejection mechanism.

Background

In the prior art, a wind sweeping connecting rod is arranged at an air outlet of an indoor unit of an air conditioner, and a series of wind sweeping blades which are arranged in parallel are connected in series in the length direction of the wind sweeping connecting rod and are hinged with the upper wall and the lower wall of a channel of the air outlet at the same time, so that the wind sweeping blades can realize the planar turnover of the wind sweeping blades by taking two hinged points of the upper wall and the lower wall as turnover shafts; when the wind sweeping connecting rod moves horizontally along the length direction of the wind sweeping connecting rod, the wind sweeping blade is driven to use the upper and lower hinged points as turnover shafts, the wind sweeping connecting rod connecting point is used as a moving point to carry out planar offset, and therefore the angle of the wind sweeping blade relative to the plane where the air outlet is located is changed, and the air outlet angle is adjusted.

In order to rapidly produce the wind sweeping connecting rod in batches, Polyformaldehyde (POM) is generally adopted as a raw material for injection molding production, formic acid can be decomposed from the POM material in a viscous state in the prior art, an injection molding piece can be adhered to a mold due to formic acid, the mold surface is damaged due to formic acid corrosion, and the mold adhesion problem of the injection molding piece is further aggravated.

The ratio of the axial length of the wind sweeping connecting rod to the cross section perpendicular to the axial direction is large, and when the mold sticking happens, if the wind sweeping connecting rod is directly pulled out from two ends of the wind sweeping connecting rod, the wind sweeping connecting rod can be broken off, so that an ejection mechanism needs to be designed for ejecting the wind sweeping connecting rod;

the ejection mechanism in the prior art needs to be provided with a driving mechanism or a complex linkage mechanism to drive the ejection mechanism, so that a die with the ejection mechanism needs to be designed, and the driving mode of the ejection mechanism can be simplified.

Disclosure of Invention

In order to overcome the problems in the related art, the present application provides a mold with an ejection mechanism, which includes: the moving die 10, the fixed die 20 and the ejection mechanism 30;

the movable mold 10 includes: a movable mold cavity 11 and a mold clamping abutting part 12 positioned at two sides of the movable mold cavity 11; the fixed mold 20 includes: a fixed die cavity 21; the ejection mechanism 30 includes: an injection molding abutment surface 310 and a movable mold abutment surface 311; the ejection mechanism 30 is provided in the fixed mold cavity 21, and the projection of the movable mold abutment surface 311 on the movable mold 10 in the ejection direction is located on the mold clamping abutment portion 12, and the projection of the injection molding abutment surface 310 on the movable mold 10 in the ejection direction is located on the movable mold cavity 11; when the film is combined: the movable mold cavity 11 and the fixed mold cavity 21 form an injection molding cavity 50, and a movable mold abutting surface 311 of the ejection mechanism 30 is elastically abutted with the mold clamping abutting portion 12;

the ejection direction is a direction perpendicular to a parting surface between the movable mold 10 and the fixed mold 20.

In one embodiment, upon film closure: the movable mold cavity 11, the fixed mold cavity 21 and the injection molding abutting surface 310 of the ejection mechanism 30 together form an injection molding cavity 50.

In one embodiment, the ejection mechanism 30 includes two; the two ejection mechanisms 30 are respectively arranged on two opposite sides in the injection molding piece cavity 50.

In one embodiment, the ejection mechanisms 30 include at least three; at least three of the ejection mechanisms 30 are symmetrically arranged along the length direction of the injection molding cavity 50.

In one embodiment, the ejection mechanism 30 includes a pogo pin 31 and a spring 32;

the bottom of the fixed die cavity 21 is also provided with a bullet needle accommodating groove 40; the spring 32 and the elastic needle 31 are sequentially arranged in the elastic needle accommodating groove.

In one embodiment, the pogo pin includes: a first fixed mold insert pin 33 and a second fixed mold insert pin 34; the first die insert pin 33 includes: the injection molding part abutting surface 310 and the movable mold abutting surface 311 are arranged at the top end of the first needle body 313 in the length direction, the shaft shoulder 312 is arranged at the bottom end of the first needle body 313 in the length direction, and the bottom of the shaft shoulder 312 is hollow; the second fixed mold insert pin 34 is provided with a second pin body 341 and an embedded block 342, the embedded block 342 is arranged at the top end of the second pin body 341, and the embedded block 342 is matched with the hollow area at the bottom of the shaft shoulder 312; the embedded block 342 of the second fixed mold insert pin 34 is embedded in the hollow area at the bottom of the shaft shoulder 312 to form the spring pin 31.

In one embodiment, one end of spring 32 abuts shoulder 312 of pogo pin 31 and the other end abuts the bottom of pogo pin receiving groove 40.

In one embodiment, the latch accommodating groove 40 is provided with a limiting protrusion 41, and the limiting protrusion 41 is adapted to the shaft shoulder 312 of the latch 31.

In one embodiment, the injection-molded part is a wind sweeping connecting rod of an air conditioner.

In one embodiment, the axis diameter of the bullet needle is 5mm to 7mm, and the length of the bullet needle is 14mm to 17 mm.

The technical scheme provided by the application can comprise the following beneficial effects:

the mold with the ejection mechanism is provided with the ejection mechanism 30 capable of elastically ejecting along the ejection direction;

since the projection of the movable mold abutment surface 311 onto the movable mold 10 in the ejection direction is located on the mold clamping abutment 12, when the movable mold 10 and the fixed mold 20 are clamped, the mold clamping abutment 12 compresses the ejection mechanism 30 (accumulates elastic potential energy) at the position of the movable mold abutment surface 311, and when the clamping is completed, the compression distance of the ejection mechanism 30 is maximized;

meanwhile, the projection of the injection-molded article abutment surface 310 on the movable mold 10 in the ejection direction is located on the movable mold cavity 11, and therefore, when the ejection mechanism 30 is compressed (mold clamping), the space surrounded by the injection-molded article abutment surface 310, the movable mold cavity 11, and the cavity surface of the fixed mold cavity together constitutes the injection-molded article cavity 50. Therefore, after the injection molding is completed, the movable mold 10 is separated from the parting surface, the mold closing abutting portion 12 is also separated from the abutting portion of the movable mold 10, the ejection mechanism 30 is restored (releases elastic potential energy) to push the injection molding abutting surface 310 to eject toward the molded injection molding (i.e., eject toward the ejection direction), and the injection molding abutting surface 310 further pushes the injection molding in the fixed mold groove to separate from the mold, thereby completing the ejection.

The mold with the ejection mechanism is simple in structure, the transmission end and the ejection end of the ejection mechanism 30 are arranged at one position, the separation of an injection molding piece and the mold can be completed by utilizing the acting force of mold closing and the elastic force of the ejection mechanism 30, and a complex linkage mechanism or a complex transmission mechanism does not need to be designed.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

Fig. 1 is a schematic top view of a mold with an ejection mechanism according to an embodiment of the present disclosure;

FIG. 2 is a schematic front view of the mold of FIG. 1 in a clamped state;

FIG. 3 is a schematic front view of the mold shown in FIG. 1;

fig. 4 is a schematic structural diagram of an ejection mechanism according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a bullet needle in front view according to an embodiment of the present application;

FIG. 6 is a schematic top view of the ejection end of the latch of FIG. 5;

FIG. 7 is a side view of a first modular insert configuration of the bullet pin of FIG. 5;

FIG. 8 is a schematic view of the location of the bullet pin of FIG. 5;

FIG. 9 is a schematic side view of the movable mold according to the embodiment of the present application.

Detailed Description

Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Example one

In the injection molding production process of the mold, the ejection mechanism 30 can be arranged to automatically eject the injection molded part, meanwhile, the transmission mode of the ejection mechanism 30 is simplified, and the ejection mechanism 30 is prevented from being driven by a separate driving mechanism or a linkage mechanism designed in the mold.

The application provides a mould with ejection mechanism includes: the moving die 10, the fixed die 20 and the ejection mechanism 30;

as shown in fig. 9, the movable mold 10 includes: a movable mold cavity 11 and a mold clamping abutting part 12 positioned at two sides of the movable mold cavity 11;

as shown in fig. 4, the fixed mold 20 includes: a fixed die cavity 21;

the ejection mechanism 30 includes: an injection molding abutment surface 310 and a movable mold abutment surface 311;

the ejection mechanism 30 is provided in the fixed mold cavity 21, and the projection of the movable mold abutment surface 311 on the movable mold 10 in the ejection direction is located on the mold clamping abutment portion 12, and the projection of the injection molding abutment surface 310 on the movable mold 10 in the ejection direction is located on the movable mold cavity 11;

when the film is combined: the movable mold cavity 11 and the fixed mold cavity 21 form an injection molding cavity 50, and a movable mold abutting surface 311 of the ejection mechanism 30 is elastically abutted with the mold clamping abutting portion 12;

Referring to fig. 1, 2 and 3, fig. 1 is a schematic top view of a mold with an ejection mechanism according to an embodiment of the present disclosure; fig. 2 is a schematic view of a mold clamping state front view of the mold shown in fig. 1, the front view being viewed from a plane a-a shown in fig. 1. Fig. 3 is a schematic front view of the mold shown in fig. 1.

As shown in fig. 6 and 7, the ejector mechanism 30 is provided with the movable mold abutment surface 311 and the injection-molded article abutment surface 310.

Specifically, the movable mold abutment surface 311 is higher than the injection-molded article abutment surface 310 in the ejection direction.

When the movable die 10 and the fixed die 20 are matched, the spring 32 is compressed by the ejection mechanism 30 along the ejection direction, and the maximum height of the ejection mechanism 30 along the ejection direction is coincided with the parting surface; during mold splitting, the ejection mechanism 30 releases elastic potential energy to eject along the ejection direction, and at this time, the height of the ejection mechanism 30 along the ejection direction is higher than the parting surface.

Further, when the film is combined: the movable mold cavity 11, the fixed mold cavity 21 and the injection molding abutting surface 310 of the ejection mechanism 30 together form an injection molding cavity 50.

Further, the ejection mechanisms 30 include two; the two ejection mechanisms 30 are respectively arranged on two opposite sides in the injection molding piece cavity 50.

Further, as shown in fig. 8, at least three of the ejection mechanisms 30 are symmetrically arranged along the length direction of the injection molding cavity 50.

Specifically, the number of the injection molding cavities 50 is 2, and 2 ejection mechanisms 30 are respectively arranged on two opposite sides in each single injection molding cavity 50.

Specifically, the ejection distance of the ejection mechanism 30 perpendicular to the parting surface is 3-5 mm.

In the embodiment of the present application, the ejection position of the ejection mechanism 30 is located around the injection molded part, so that if the ejection mechanism 30 is only disposed on one side of the injection molded part cavity 50, a moment in the ejection direction is generated on the injection molded part in the ejection position, which results in the injection molded part being broken. Therefore, the ejection mechanisms 30 need to be disposed on two opposite sides of the injection molding cavity 50 to offset the moments on the two sides of the injection molding.

Illustratively, the ejection mechanism 30 is a sponge or a polymer having elasticity in the ejection direction.

The mold with the ejection mechanism according to the embodiment of the present application is provided with the ejection mechanism 30 capable of elastically ejecting along the ejection direction; since the projection of the movable mold abutment surface 311 onto the movable mold 10 in the ejection direction is located on the mold clamping abutment 12, when the movable mold 10 and the fixed mold 20 are clamped, the mold clamping abutment 12 compresses the ejection mechanism 30 (accumulates elastic potential energy) at the position of the movable mold abutment surface 311, and when the clamping is completed, the compression distance of the ejection mechanism 30 is maximized; meanwhile, the projection of the injection-molded article abutment surface 310 on the movable mold 10 in the ejection direction is located on the movable mold cavity 11, and therefore, when the ejection mechanism 30 is compressed (mold clamping), the space surrounded by the injection-molded article abutment surface 310, the movable mold cavity 11, and the cavity surface of the fixed mold cavity together constitutes the injection-molded article cavity 50. Therefore, after the injection molding is completed, the movable mold 10 is separated from the parting surface, the mold closing abutting portion 12 is also separated from the abutting portion of the movable mold 10, the ejection mechanism 30 is restored (releases elastic potential energy) to push the injection molding abutting surface 310 to eject toward the molded injection molding (i.e., eject toward the ejection direction), and the injection molding abutting surface 310 further pushes the injection molding in the fixed mold groove to separate from the mold, thereby completing the ejection.

Example two

In one embodiment, the ejection mechanism elastically compresses and extends in the ejection direction to eject the injection-molded part.

Therefore, the embodiment of the present application is one of the ways of implementing elastic ejection of the ejection mechanism.

Referring to fig. 4, the ejection mechanism 30 includes: a bullet pin 31 and a spring 32; the bottom of the fixed die cavity 21 is also provided with a bullet needle accommodating groove 40; the spring 32 and the elastic needle 31 are sequentially arranged in the elastic needle accommodating groove.

Further, the bullet needle includes: a first fixed mold insert pin 33 and a second fixed mold insert pin 34; the first die insert pin 33 includes: the injection molding part abutting surface 310 and the movable mold abutting surface 311 are arranged at the top end of the first needle body 313 in the length direction, and the bottom of the shoulder 312, which is hollowed out, is arranged at the bottom end of the first needle body 313 in the length direction; the second fixed mold insert pin 34 is provided with a second pin body 341 and an embedded block 342, the embedded block 342 is arranged at the top end of the second pin body 341, and the embedded block 342 is matched with the hollow area at the bottom of the shaft shoulder 312; the embedded block 342 of the second fixed mold insert pin 34 is embedded in the hollow area at the bottom of the shaft shoulder 312 to form the spring pin 31.

Further, one end of the spring 32 abuts against the shoulder 312 of the latch 31, and the other end abuts against the bottom of the latch accommodating groove 40.

Further, the elastic needle accommodating groove 40 is provided with a limiting protrusion 41, and the limiting protrusion 41 is matched with the shaft shoulder 312 of the elastic needle 31.

Specifically, the diameter of the shaft of the elastic needle is 5mm to 7mm, and the length of the elastic needle is 14mm to 17 mm.

Specifically, the spring 32 is a standard component with a specification of SL12 × 20, a diameter of 12MM, and an overall length of 20 MM.

Specifically, the length of the spring 32 in the limit compression state plus the length of the bullet needle 31 is less than or equal to the depth of the bullet needle accommodating groove 40; after the bullet pin 31 is placed on the spring 32, the length of the spring 32 plus the length of the bullet pin 31 is greater than the depth of the bullet pin containing groove 40.

When the movable mold abutment surface 311 of the ejector mechanism 30 is driven by the movable mold 10, the spring 32 is compressed in a direction away from the ejection direction, and when the movable mold 10 and the fixed mold 20 are completely closed, the elastic potential energy of the spring 32 reaches the maximum. When the movable mold 10 and the fixed mold 20 are separated, the mold clamping abutting portion 12 is separated from the movable mold abutting surface 311, the spring 32 releases elastic potential energy, and ejects the elastic needle 31 in the ejection direction, so that the injection molding piece abutting surface 310 ejects the injection molding piece from the fixed mold groove.

Specifically, as shown in fig. 5, the pogo pin 31 is provided with a first fixed die insert pin 33 and a second fixed die insert pin 34, and the second fixed die insert pin 34 is provided with the insert block 342; the embedded block 342 is matched with the hollow area at the bottom of the shaft shoulder 312 of the first fixed die insert pin 33, and the elastic pin 31 is assembled by matching and assembling the embedded block 342 and the hollow area at the bottom of the shaft shoulder 312.

In practical production applications, a plurality of molds are usually provided for producing different injection-molded parts, and the corresponding injection-molded part cavities of the molds are different. In the mold with the ejection mechanism, the injection molding piece cavity is formed by surrounding the movable mold cavity, the fixed mold cavity and the injection molding piece abutting surface of the ejection mechanism.

Therefore, when the mold needs to be replaced, the injection molding part abutting surface of the ejection mechanism also needs to be replaced correspondingly; in the embodiment of the present application, the injection-molded part abutment surface is provided on the first die insert pin 33 by modularly splitting the pogo pin 31 into the first die insert pin 33 and the second die insert pin 34. Therefore, when the mold and the ejector mechanism 30 need to be replaced, only the first die-fixing pins 33 of the ejector mechanism 30 need to be replaced.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A mold having an ejection mechanism, comprising:

the device comprises a movable die (10), a fixed die (20) and an ejection mechanism (30);

the movable mold (10) includes: a movable mold cavity (11) and mold clamping abutting parts (12) positioned at two sides of the movable mold cavity (11);

the stationary mold (20) includes: a fixed die cavity (21);

the ejection mechanism (30) comprises: an injection molding abutting surface (310) and a movable mold abutting surface (311);

the ejection mechanism (30) is arranged in the fixed die cavity, the projection of the movable die abutting surface (311) on the movable die (10) in the ejection direction is positioned on the die clamping abutting portion (12), and the projection of the injection molding abutting surface (310) on the movable die (10) in the ejection direction is positioned on the movable die cavity (11);

when the film is combined: the movable mold groove (11) and the fixed mold groove (21) form an injection molding piece cavity (50), and the movable mold abutting surface (311) is elastically abutted with the mold closing abutting part (12);

the ejection direction is perpendicular to the parting surface between the movable mold (10) and the fixed mold (20).

2. The mold with the ejection mechanism according to claim 1, wherein, when the film is closed: the movable mould groove (11), the fixed mould groove (21) and the injection molding abutting surface (310) of the ejection mechanism (30) jointly form an injection molding cavity (50).

3. The mold with ejection mechanism of claim 1,

the two ejection mechanisms (30) are included; the two ejection mechanisms (30) are respectively arranged on two opposite sides in the injection molding piece cavity (50).

4. The mold with ejection mechanism of claim 1,

the ejection mechanisms (30) comprise at least three; at least three ejection mechanisms (30) are symmetrically arranged along the length direction of the injection molding piece cavity (50).

5. The mold with ejection mechanism of claim 1,

the ejection mechanism (30) comprises a spring pin (31) and a spring (32); the bottom of the fixed die cavity (21) is also provided with a bullet needle accommodating groove (40); the spring (32) and the elastic needle (31) are sequentially arranged in the elastic needle accommodating groove.

6. The mold with an ejection mechanism according to claim 5, wherein the pogo pin (31) includes a first fixed mold insert pin (33) and a second fixed mold insert pin (34);

the first fixed die insert needle (33) comprises a first needle body (331) and a shaft shoulder (312), the top end of the first needle body (331) in the length direction is provided with the injection molding part abutting surface (310) and the movable die abutting surface (311), the bottom end of the first needle body (331) in the length direction is provided with the shaft shoulder (312), and the bottom of the shaft shoulder (312) is hollowed;

the second fixed die insert pin (34) is provided with a second pin body (341) and an embedded block (342), the embedded block (342) is arranged at the top end of the second pin body (341), and the embedded block (342) is matched with the hollow area at the bottom of the shaft shoulder (312);

and an embedded block (342) of the second fixed die insert pin (34) is embedded into the hollow area at the bottom of the shaft shoulder (312) and then combined into the spring pin (31).

7. The mold with the ejection mechanism according to claim 5, wherein the axis diameter of the elastic needle (31) is 5mm to 7mm, and the length of the elastic needle is 14mm to 17 mm.

8. The mold with ejection mechanism of claim 5,

one end of the spring (32) is abutted against a shaft shoulder (312) of the elastic needle (31), and the other end of the spring is abutted against the bottom of the elastic needle accommodating groove (40).

9. The mold with ejection mechanism of claim 5,

a limiting bulge (41) is arranged in the elastic needle accommodating groove (40), and the limiting bulge (41) is matched with a shaft shoulder (312) of the elastic needle (31).

10. The mold with the ejection mechanism as claimed in claim 1, wherein the injection molding member is a wind sweeping connecting rod of an air conditioner.