CN202156002U

CN202156002U - Injection mold

Info

Publication number: CN202156002U
Application number: CN2011202916160U
Authority: CN
Inventors: 吴小平; 蒋坤学
Original assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Current assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2012-03-07
Anticipated expiration: 2021-07-22

Abstract

The utility model discloses an injection mold which comprises a female die, a male die correspondingly matched with the female die, an ejection structure, a return structure and a forcible return structure, wherein the female die comprises a female die fixing plate and a female die plate; the male die comprises a male die plate, a male die fixing plate and a pair of spacer blocks, wherein a containing space is formed between the two spacer blocks; the ejection structure is arranged in the containing space and comprises an upper ejection plate and a lower ejection plate; the return structure is arranged between the ejection structure and the male die plate and comprises a return lever and a spring; and the forcible return structure comprises a push rod, a swing rod, a positioning block and a stopping block. As the forcible return structure formed by the push rod, the swing rod, the positioning block and the stopping block is additionally arranged, the die can be opened smoothly even when the return structure in a traditional injection mold can not be work normally, therefore damage of the die caused by failure of a conventional return structure can be reduced.

Description

Injection mold

Technical field

The utility model relates to a kind of die device, particularly relates to a kind of injection mold.

Background technology

In injection mold, can be designed with the mould thimble; The effect of mould thimble is when die sinking; Product is ejected; Product takes off back mould thimble must get back to original position again, is convenient to injecting products next time, so the return structure of mould thimble is to be related to the key position that can mold system run well.

Present injection mold comprises master mold, with the male model of master mold corresponding matching and be arranged at ejecting structure and the return structure on the male model; Ejecting structure comprises top board, thimble etc., and the return structure generally comprises a return pin and and is installed between top board and the male model and is sheathed on the spring on the return pin, during die sinking, utilizes the elastic force of spring to make ejecting structure obtain return.

But the return structure of present injection mold often depends on return spring, when the thimble of spring fatigue or ejecting structure blocks too much, causes return pin cisco unity malfunction and causes the generation of pressing mold phenomenon.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency of the prior art; Provide a kind of can be when the spring failure in the conventional return structure mould to eject function still unaffected; Can reach the effect that normally ejects, reduce the injection mold that mould damages because of conventional return structural failure.

For reaching above-mentioned purpose; Injection mold that the utility model provides; Comprise: a master mold, is forced the return structure with male model, an ejecting structure, a return structure and of the corresponding cooperation of master mold, and master mold comprises die holder and is fixed in the caster of die holder below; Male model comprise the male model plate below the caster, be fixed in below the male model plate the male model fixed head and between male model plate and male model fixed head and be fixedly connected a pair of spacer block of male model plate and male model fixed head, formation one receiving space between two spacer blocks; Ejecting structure is arranged in the receiving space, comprises that the upper ejector plate that is positioned at this receiving space reaches liftout plate down; The return structure is arranged between ejecting structure and the male model plate; Comprise a return bar and a spring; Return bar one end be arranged at upper ejector plate and under eject between the version; The other end passes the male model plate and stretches out in male model plate upper surface, and spring housing is located on the return bar and an end is resisted against on the upper ejector plate, the other end is resisted against in the male model plate; Force the return structure to comprise a push rod, a fork, a positioning block and a baffle; Push rod one end is fixed on the caster outer surface; And its bearing of trend is parallel with die sinking matched moulds direction; Fork one end is articulated in male model plate outer surface middle part with the hinge form, and fork can rotate around this link, and locating piece is fixed on male model plate front surface and correspondence is positioned at push rod one side; Baffle is fixed on the upper ejector plate outer surface, and when installing with fork to the lopsidedness at push rod place and its free end is resisted against on the baffle all the time.

As stated; The utility model injection mold is through setting up the pressure return structure that push rod, fork, locating piece and baffle are formed; Make also die sinking smoothly when return structure in the traditional injection moulding mould can't operate as normal, thereby the minimizing mould damages because of conventional return structural failure.

Description of drawings

Fig. 1 is the front view under the utility model injection mold die opening state.

Fig. 2 is the front view in the injection mold matched moulds process shown in Figure 1.

Fig. 3 is the front view under the injection mold matched moulds completion status shown in Figure 1.

Each description of reference numerals is following among the figure:

Master mold 1 die holder 11

Caster 12 male models 2

Male model plate 21 male model fixed heads 22

Spacer block 23 ejecting structures 3

31 times liftout plates 32 of upper ejector plate

Force return structure 4 push rods 41

Fork 42 locating pieces 43

Baffle 44 guiding faces 431

Die cavity 5

The specific embodiment

By the technology contents, the structural feature that specify the utility model, realized purpose and effect, know clearly below in conjunction with embodiment and conjunction with figs. and give explanation.

See also Fig. 1 to Fig. 3, the utility model injection mold comprises master mold 1, with the male model 2 of master mold 1 corresponding matching and be arranged at ejecting structure 3 and the return structure (figure does not show) on the male model 2.Said master mold 1 comprises die holder 11 and is fixed in the caster 12 of die holder 11 belows.Said male model 2 comprise the male model plate 21 below the caster 12, be fixed in below the male model plate 2 male model fixed head 22 and between male model plate 21 and the male model fixed head 22 and be fixedly connected between a pair of spacer block 23, two spacer blocks 23 of male model plate 21 and male model fixed head 22 and form a receiving space.Caster 12 internal fixation are provided with a mother module core (figure does not show), and male model plate 21 internal fixation are provided with a male model benevolence (figure does not show).

Ejecting structure 3 is arranged in the receiving space, and it comprises the upper ejector plate 31 that is positioned at this receiving space, following liftout plate 32 and thimble (figure does not show) etc., and upper ejector plate 31 is fixed as one and can in receiving space, moves up and down with following liftout plate 32.During matched moulds, form a die cavity 5 between mother module core and the male model benevolence, shaped article takes shape in this die cavity 5.The return structure is arranged between ejecting structure 3 and the male model plate 21; Comprise a return bar and a spring; Return bar one end be arranged at upper ejector plate 31 and under eject the version 32 between; The other end passes male model plate 21 and stretches out in male model plate 21 upper surfaces, and spring housing is located on the return bar and an end is resisted against on the upper ejector plate 31, and the other end is resisted against in the male model plate 21.After ejecting product, utilize the elastic-restoring force of spring to make ejecting structure 3 obtain return.

Further, the utility model injection mold comprises that also one forces return structure 4, and this pressure return structure 4 comprises a push rod 41, a fork 42, a positioning block 43 and a baffle 44.Push rod 41 1 ends are fixed on caster 12 outer surfaces, and its bearing of trend is parallel with die sinking matched moulds direction.Fork 42 1 ends are articulated in male model plate 21 outer surfaces middle part with the hinge form, so that fork 42 can rotate around this link.Locating piece 43 is fixed on male model plate 21 front surfaces and correspondence is positioned at push rod 41 1 sides, and the guiding face 431 that it tilts near the side upper end formation one of push rod 41 is to guide push rod 41 along moving under the direction of die sinking matched moulds.Baffle 44 is fixed on upper ejector plate 31 outer surfaces of ejecting structure 3, and when installing with fork 42 to the lopsidedness at push rod 41 places and its free end is resisted against on the baffle 44 all the time.

Details are as follows for the operation principle of the utility model injection mold:

See also Fig. 1, be the state after the die sinking of the utility model injection mold, at this moment; Product is ejected; Therefore liftout plate 32 was positioned at the receiving space top under the upper ejector plate 31 of ejecting structure 3 reached, and master mold 1 is away from male model 2, and the spring in the return structure is in compressive state; Push rod 41 does not contact with fork 42, and fork 42 free ends are resisted against on the baffle 44.At this moment, if the spring failure in traditional return structure causes being difficult to playback by the ejecting structure 3 of ejection in the receiving space top, thimble etc. still are exposed in the die cavity 5.

See also Fig. 2; In the utility model injection mold matched moulds process; Master mold 1 moves downward, and guides lower push-rods 41 at the guiding face 431 of locating piece 43 and moves downward along locating piece 43 right sides, and push rod 41 contacts with fork 42 in moving downward process; Push rod 41 promotes fork 42 along counterclockwise rotating, and upper ejector plate 31 moves downward under fork 2 effects.Finally, as shown in Figure 3, ejecting structure 3 was able to smooth playback when matched moulds was accomplished, and was exposed to thimble in the die cavity 5 etc. and also was able to playback.

As stated; The utility model injection mold is through setting up the pressure return structure 4 that push rod 41, fork 42, locating piece 43 and baffle 44 are formed; Make also die sinking smoothly when return structure in the traditional injection moulding mould can't operate as normal, thereby the minimizing mould damages because of conventional return structural failure.

Claims

1. injection mold; Comprise: a master mold, is forced the return structure with male model, an ejecting structure, a return structure and of the corresponding cooperation of master mold; Master mold comprises die holder and is fixed in the caster of die holder below, male model comprise the male model plate below the caster, be fixed in below the male model plate the male model fixed head and between male model plate and male model fixed head and be fixedly connected a pair of spacer block of male model plate and male model fixed head, formation one receiving space between two spacer blocks; Ejecting structure is arranged in the receiving space; Comprise that the upper ejector plate that is positioned at this receiving space reaches liftout plate down, the return structure is arranged between ejecting structure and the male model plate, comprises a return bar and a spring; Return bar one end is arranged between upper ejector plate and the following liftout plate; The other end passes the male model plate and stretches out in male model plate upper surface, and spring housing is located on the return bar and an end is resisted against on the upper ejector plate, the other end is resisted against in the male model plate, it is characterized in that: comprise that also one forces the return structure; It comprises a push rod, a fork, a positioning block and a baffle; Push rod one end is fixed on the caster outer surface, and its bearing of trend is parallel with die sinking matched moulds direction, and fork one end is articulated in male model plate outer surface middle part with the hinge form; Fork can rotate around this link; Locating piece is fixed on male model plate front surface and correspondence is positioned at push rod one side, and baffle is fixed on the upper ejector plate outer surface, and when installing with fork to the lopsidedness at push rod place and its free end is resisted against on the baffle all the time.

2. injection mold as claimed in claim 1 is characterized in that: the guiding face that said locating piece tilts near the side upper end formation one of said push rod, move along being directed downwards of die sinking matched moulds with the guiding push rod.