CN220129408U

CN220129408U - Injection mold with secondary ejection and forced release functions

Info

Publication number: CN220129408U
Application number: CN202320589022.0U
Authority: CN
Inventors: 唐林丁; 邝志辉; ***
Original assignee: GAC Component Co Ltd
Current assignee: GAC Component Co Ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-12-05
Anticipated expiration: 2033-03-22

Abstract

The utility model discloses an injection mold with a secondary ejection and forced release function, which comprises a panel, a fixed template, a movable template, square iron, a lower ejector pin plate, an upper ejector pin plate, a bottom plate, ejector pins, an ejector plate, a limiting pull rod, a spring, an ejector insert and a forced release insert, wherein the lower part of the limiting pull rod is in threaded connection with the ejector plate, the middle part of the limiting pull rod is assembled with a corresponding hole of the movable template in a clearance fit manner, the top end surface is positioned at the parting surface of the movable template and the fixed template, a limiting step is arranged in the movable template, and the spring is arranged between the movable template and the ejector plate; the lower part of the ejection insert is fixedly connected with the ejection plate, the upper part of the ejection insert penetrates through the movable die plate and the rear die core and then stretches into the product cavity, the upper end part of the ejection insert forms a part of the product cavity, the lower part of the forced release insert is connected with the movable die plate, and the upper part of the forced release insert stretches into the product cavity, and the upper end part of the forced release insert forms a part of the product cavity. The risk that the plastic part is adhered to the thimble and cannot automatically fall off, so that the product is distorted and deformed and the die parts are broken is avoided.

Description

Injection mold with secondary ejection and forced release functions

Technical Field

The utility model relates to the technical field of injection molds, in particular to a secondary ejection injection mold with a forced release function.

Background

The mould is a variety of moulds and tools used for injection moulding, blow moulding, extrusion, die casting, forging, forming, smelting, stamping and other methods in industrial production to obtain the required products. In short, a mold is a tool used to make a molded article, which is made up of various parts, with different molds being made up of different parts. The processing of the appearance of the article is realized mainly by changing the physical state of the formed material. The blank is made into a tool with a specific shape and size under the action of external force. The method is widely used for blanking, die forging, cold heading, extrusion, powder metallurgy part pressing, pressure casting and the molding processing of compression molding or injection molding of engineering plastics, rubber, ceramics and other products. The mould generally comprises a movable mould and a fixed mould (or a male mould and a female mould), which can be separated and combined, a workpiece is taken out when the movable mould and the fixed mould are separated, and a blank is injected into a mould cavity for forming when the movable mould and the fixed mould are closed.

At present, in automobile gear shifter bulb, automobile interior and exterior assembly plastic part or other plastic parts, partial plastic part is complicated because of the structure, and the mould can find when arranging the thimble that can not push out the product completely through solitary mould that opens and shuts makes the product automatic fall, must take out the product with the help of the manual work, because the product surface temperature is high when opening the mould, the direction slope is taken out to the manual work can lead to the product quality disqualification to also waste a lot of time, the cost increases.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide the injection mold with the functions of secondary ejection and forced release, so that the risks of product distortion and mold part fracture caused by the fact that a plastic part is adhered to a thimble and cannot automatically fall off when the mold is opened and ejected are avoided.

The utility model adopts the following technical scheme:

the utility model provides an injection mold of two ejecting and taking strong function of taking off, includes panel, fixed die plate, movable mould board, square iron and bottom plate that set gradually from top to bottom, is equipped with the lower thimble board that can reciprocate between bottom plate and movable mould board, is fixed with the upper thimble board that moves with lower thimble board on the lower thimble board, is fixed with the thimble on the upper thimble board, is equipped with the back mould benevolence on the movable mould board, be equipped with the front mould benevolence on the fixed die plate, the front mould benevolence forms the product die cavity with the back mould benevolence combination, the upper portion of thimble passes the movable mould board for ejecting the product on the back mould benevolence; the device comprises a movable die plate, a square iron, a movable die plate, a limiting pull rod, a spring, an ejection insert and a forced release insert, wherein the ejector plate is positioned between the square iron and the movable die plate, the ejector plate is connected with the movable die plate through the limiting pull rod, the lower part of the limiting pull rod is in threaded connection with the ejector plate, the middle part of the limiting pull rod is assembled with the corresponding hole of the movable die plate in a clearance fit manner, the top end surface of the limiting pull rod is positioned at the parting surface of the movable die plate and the parting surface of the fixed die plate, a limiting step for limiting the downward moving distance of the limiting pull rod is arranged in the movable die plate, and the spring is further arranged between the movable die plate and the ejector plate; the lower part of the ejection insert is fixedly connected with the ejection plate, the upper part of the ejection insert penetrates through the movable die plate and the rear die core and then stretches into the product cavity, the upper end part of the ejection insert forms a part of the product cavity, the lower part of the forced release insert is connected with the movable die plate, and the upper part of the forced release insert stretches into the product cavity, and the upper end part of the forced release insert forms a part of the product cavity.

Further, two ejection inserts are arranged, and the strong release insert is positioned between the two ejection inserts.

Further, a first groove for accommodating the spring is formed in the ejector plate, a second groove is formed in the position, corresponding to the first groove, of the movable mold plate, and two ends of the spring are respectively abutted to the first groove and the second groove.

Further, the limit pull rods are four.

Further, a core pulling mechanism for pulling out the product from the product cavity is arranged on the fixed template.

Compared with the prior art, the utility model has the beneficial effects that:

according to the injection mold, through the secondary ejection mechanism with the forced release, injection time and cost are saved, the product can be withdrawn from the ejector pin, and the quality of the mold product is effectively improved; the secondary ejection mechanism with the forced release can avoid the problem that a product cannot be ejected due to complex side characteristics, so that the product function can be fully considered in the product design stage, and all required characteristics are laid out; through the secondary ejection mechanism with the forced release, the insert at the characteristic part of the product is ejected firstly and then forced release is carried out during die opening, so that the product is ejected safely, and the product quality is effectively improved.

Drawings

FIG. 1 is a cross-sectional view of an injection mold with a forced release function and a secondary ejection according to the present utility model;

in the figure: 1. a panel; 2. a stationary mold plate; 3. a movable template; 4. an ejector plate; 5. square iron; 6. a bottom plate; 7. an upper ejector plate; 8. a lower ejector plate; 9. a thimble; 10. a rear mold core; 11. a front mold core; 12. a product; 13. ejecting the insert; 14. a strong release insert; 15. a spring; 16. a limit pull rod; 17. a limit step; 18. core pulling mechanism.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limitations of the present utility model. Furthermore, the terms "first," "second," "one," "another," and the like, are used for distinguishing between similar elements and not intended to limit the scope of the utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly, indirectly, through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. Corresponding reference characters indicate corresponding parts throughout the several views (e.g., identical structure, functionally similar elements identified by "1XX" and "2 XX").

Referring to fig. 1, a preferred embodiment of the present utility model: the utility model provides an injection mold of twice ejecting and taking strong function of taking off, includes panel 1, fixed die plate 2, movable mould board 3, square iron 5 and bottom plate 6 that set gradually from top to bottom, is equipped with lower thimble board 8 that can reciprocate between bottom plate 6 and movable mould board 3, is fixed with the last thimble board 7 that moves with lower thimble board 8 on lower thimble board 8, is fixed with thimble 9 on last thimble board 7, is equipped with back mould benevolence 10 on movable mould board 3, be equipped with front mould benevolence 11 on fixed die plate 2, front mould benevolence 11 and back mould benevolence 10 make up and form the product die cavity, the upper portion of thimble 9 passes movable mould board 3 for ejecting the product 12 on the back mould benevolence 10; the novel die plate structure comprises a movable die plate 3, and is characterized by further comprising an ejector plate 4, a limiting pull rod 16, a spring 15, an ejector insert 13 and a strong release insert 14, wherein the ejector plate 4 is positioned between the square iron 5 and the movable die plate 3, the ejector plate 4 is connected with the movable die plate 3 through the limiting pull rod 16, the lower part of the limiting pull rod 16 is in threaded connection with the ejector plate 4, the middle part of the limiting pull rod 16 is assembled with a corresponding hole of the movable die plate 3 in a clearance fit manner, the top end surface is positioned at the parting surface of the movable die plate 3 and the parting surface of the fixed die plate 2, a limiting step 17 for limiting the downward movement distance of the limiting pull rod 16 is arranged in the movable die plate 3, and the spring 15 is further arranged between the movable die plate 3 and the ejector plate 4; the lower part of the ejection insert 13 is fixedly connected with the ejection plate 4, the upper part of the ejection insert 13 penetrates through the movable die plate 3 and the rear die core 10 and then stretches into the product cavity, the upper end part of the ejection insert forms a part of the product cavity, the lower part of the forced release insert 14 is connected with the movable die plate 3, and the upper part of the forced release insert 14 stretches into the product cavity, and the upper end part of the forced release insert forms a part of the product cavity.

In this embodiment, fig. 1 is a state diagram of a mold in a mold clamping state, and a mold opening process is as follows: the spring 15 is in a compressed state before die opening, the pressure of the spring 15 is released at the moment of die opening, the ejector plate 4 and the movable die plate 3 are separated under the action of the limiting pull rod 16, when the limiting pull rod 16 moves to be abutted against the limiting step 17, the ejector plate 4 and the movable die plate 3 do not generate relative motion, at the moment, the ejector insert 13 is fixed on the ejector plate 4 and retreats together with the ejector plate 4, so that the ejector insert 13 is separated from the product 12 and does not contact with the product 12, at the moment, the movable die plate 3 is separated from the fixed die plate 2, because the ejector insert 13 is extracted from the product 12, enough space is reserved for deformation of the product 12, and because the ejector insert 14 is fixed on the movable die plate 3, the ejector plate 7 and the ejector pins 9 on the upper ejector plate 7 are driven by the lower ejector plate 8 to continue to move upwards together, the product 12 is ejected by the ejector pins 9, and then forced release is carried out, so that the forced release insert 14 is pulled out of the product 12, the whole die opening stroke is finished, and the product 12 is directly dropped in a sample area, and injection molding is finished.

It should be noted that, the above product 12 is not provided with a primary ejection, mainly because the product 12 has a special structure, the ejector pin 9 must be provided with a small head and neck, if the product 12 is ejected directly once, firstly because the mold temperature is higher, the product 12 is not completely cooled, the special structure of the product 12 is seriously deformed, the quality requirement is not met, the special structure of the product 12 is outwardly deformed during ejection, the inside of the mold is rubbed, the service life of the mold is greatly influenced, the mold is provided with a secondary ejection aiming at the structure, the product 12 can be ejected after the temperature of the product 12 is slightly reduced, the quality of the product 12 is improved, and the service life of the mold is correspondingly improved.

According to the injection mold, through the secondary ejection mechanism with the forced release, injection time and cost are saved, the product 12 can be withdrawn from the ejector pin 9, and the quality of the mold product 12 is effectively improved; by the secondary ejection mechanism with forced release, the problem that the product 12 cannot be ejected due to complex side characteristics can be avoided, the function of the product 12 can be fully considered in the design stage of the product 12, and all required characteristics are laid out; through the secondary ejection mechanism with the forced release, the ejection insert 13 at the characteristic part of the product 12 is ejected out and forced release is carried out during mold opening, so that the product 12 is ejected out safely, and the quality of the product 12 is effectively improved.

As a preferred embodiment of the utility model, it may also have the following additional technical features: the number of the ejection inserts 13 is two, and the strong release insert 14 is positioned between the two ejection inserts 13.

It should be noted that, the number, shape and position of the ejection inserts 13 and the forced release inserts 14 may be arranged according to the hole positions required by the product 12.

As a preferred embodiment of the utility model, it may also have the following additional technical features: the ejector plate 4 is provided with a first groove for accommodating the spring 15, the movable mould plate 3 is provided with a second groove at the position corresponding to the first groove, and two ends of the spring 15 are respectively propped against the first groove and the second groove. By providing the first groove and the second groove, the spring 15 is convenient to install and fix.

As a preferred embodiment of the utility model, it may also have the following additional technical features: four limit pull rods 16 are arranged.

As a preferred embodiment of the utility model, it may also have the following additional technical features: the fixed die plate 2 is provided with a core pulling mechanism 18 for pulling out the product 12 from the product cavity. By arranging the core pulling mechanism 18, the product 12 is not damaged by pulling, the quality of the product 12 is ensured, and the injection molding efficiency is effectively improved.

The above additional technical features can be freely combined and superimposed by a person skilled in the art without conflict.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. The utility model provides an injection mold of twice ejecting and taking strong function of taking off, includes panel (1), fixed die plate (2), movable mould board (3), square iron (5) and bottom plate (6) that set gradually from top to bottom, is equipped with lower thimble board (8) that can reciprocate between bottom plate (6) and movable mould board (3), is fixed with on lower thimble board (8) with lower thimble board (8) together movable last thimble board (7), is fixed with thimble (9) on last thimble board (7), is equipped with back mould benevolence (10) on movable mould board (3), be equipped with front mould benevolence (11) on fixed die plate (2), front mould benevolence (11) and back mould benevolence (10) combination form the product die cavity, the upper portion of thimble (9) passes movable mould board (3) for ejecting product (12) on back mould benevolence (10); the novel plastic injection molding machine is characterized by further comprising an ejector plate (4), a limiting pull rod (16), a spring (15), an ejector insert (13) and a forced release insert (14), wherein the ejector plate (4) is positioned between the square iron (5) and the movable mold plate (3), the ejector plate (4) is connected with the movable mold plate (3) through the limiting pull rod (16), the lower part of the limiting pull rod (16) is in threaded connection with the ejector plate (4), the middle part of the limiting pull rod is assembled with a corresponding hole of the movable mold plate (3) in a clearance fit manner, the top end surface of the ejector plate is positioned at the parting surface of the movable mold plate (3) and the fixed mold plate (2), a limiting step (17) for limiting the downward movement distance of the limiting pull rod (16) is arranged in the movable mold plate (3), and the spring (15) is further arranged between the movable mold plate (3) and the ejector plate (4); the lower part of the ejection insert (13) is fixedly connected with the ejection plate (4), the upper part of the ejection insert (13) penetrates through the movable die plate (3) and the rear die core (10) and then stretches into the product cavity, the upper end part of the ejection insert forms a part of the product cavity, the lower part of the forced release insert (14) is connected with the movable die plate (3), and the upper part of the forced release insert (14) stretches into the product cavity, and the upper end part of the forced release insert forms a part of the product cavity.

2. The injection mold with the double ejection and the forced release function according to claim 1, wherein two ejection inserts (13) are provided, and the forced release insert (14) is located between the two ejection inserts (13).

3. The injection mold with the forced release function and the secondary ejection according to claim 1, wherein the ejector plate (4) is provided with a first groove for accommodating a spring (15), the movable mold plate (3) is provided with a second groove at a position corresponding to the first groove, and two ends of the spring (15) are respectively propped against the first groove and the second groove.

4. The injection mold with the forced release function and the secondary ejection according to claim 1, wherein four limit pull rods (16) are arranged.

5. The injection mold with the forced release function and the secondary ejection according to claim 1, wherein the fixed mold plate (2) is provided with a core pulling mechanism (18) for pulling out the product (12) from the cavity of the product (12).