CN201261253Y

CN201261253Y - Loose core mechanism of mould

Info

Publication number: CN201261253Y
Application number: CNU2008203012104U
Authority: CN
Inventors: 支运兵
Original assignee: CHENGDU GUANGHONG MOULD MANUFACTURING Co Ltd
Current assignee: CHENGDU GUANGHONG MOULD MANUFACTURING Co Ltd
Priority date: 2008-06-18
Filing date: 2008-06-18
Publication date: 2009-06-24
Anticipated expiration: 2018-06-18

Abstract

The utility model discloses a core-pulling mechanism with great pulling force on an injection mold, which comprises a lateral movable mold core and a guide rail mounted on a fixed mold or a movable mold. When the mold is opened, the lateral movable mold core moves along a trochoid of the guide rail correspondingly to the guide rail, and the motion direction is the sum of the vector of a component of a mold-opening direction and the vector of a component of a core-pulling direction. When the mold is opened, mold-opening force acts on the lateral movable mold core through the guide rail so that the lateral movable mold core makes core-pulling motion. The core-pulling mechanism has simple structure, great pulling force, long core-pulling distance and high production efficiency due to simultaneous die-opening and core-pulling motion and is applicable to the injection mold.

Description

The core-pulling mechanism of mould

Technical field

The utility model relates to a kind of injection molding, is specifically related to the core-pulling mechanism of this mould.

Background technology

In injection molding, when existing, just need core-pulling mechanism be set on mould according to the structure of goods with the inconsistent somatotype of die sinking direction.During die sinking, core-pulling mechanism drives the side direction moving core and extracts out from goods, in case the demoulding causes interference to goods.Existing Mold Core-pulling Mechanism mainly contains taper pin core-pulling mechanism and hydraulic pressure core-pulling mechanism.The taper pin core-pulling mechanism mainly is made up of angled taper pin of axial direction and mould die sinking direction and the slide block that is installed in the guide runner of template.During die sinking, mould opening force acts on the slide block by taper pin, forces slide block outwards to move in guide runner, and the side direction moving core is installed in and moves simultaneously with slide block on the slide block and extract out from goods.The taper pin core-pulling mechanism is subjected to the limitation of taper pin load capacity, is mainly used in the occasion of loosing core apart from short, that withdrawing power is little.If loosing core of side direction moving core is big and when needing big withdrawing power, just need to adopt the hydraulic pressure core-pulling mechanism to the package power of moving core apart from long or goods.The hydraulic pressure core-pulling mechanism is controlled the motion of hydraulic cylinder piston by control system, the shot cycle comprises that die sinking-hydraulic pressure looses core-eject-four processes of matched moulds, and injection cycle is long, and production efficiency is not high, and there is leakage of oil hidden danger, easily workshop polluted.

The utility model content

The technical problem that the utility model solved is: the core-pulling mechanism that the big mould of a kind of withdrawing power is provided.

The technical scheme that solves the problems of the technologies described above is: the core-pulling mechanism of mould of the present utility model; comprise the side direction moving core; on cover half or the dynamic model guide rail is installed; the side direction moving core is at the relative guide rail movement of trajectory of guide rail upper edge guide rail during die sinking, this direction of motion be the component of die sinking direction and the direction of loosing core component vector and.

Further be that the side direction moving core rolls with guide rail along the trajectory of guide rail and cooperates.

As the preferred version of technique scheme, guide rail adopts knee, an end of side direction moving core to be enclosed within on the knee and moves back and forth along the serpentine track of knee.

Further be, the serpentine track of upper edge, the two sides knee of knee has groove, the side direction moving core by rolling bearing with groove roll and to cooperate.

As the another kind of preferred version of technique scheme, the cross section of knee is rectangular, and the side direction moving core rolls by rolling bearing two arch faces relative with knee and cooperates.

As the preferred version of technique scheme, rolling bearing adopts needle bearing.

As the preferred version of technique scheme, guide rail adopts chute, and an end of side direction moving core is arranged in chute and moves back and forth at chute.

Further be, on cover half or the dynamic model hold down gag be installed, hold down gag is pushed down the side direction moving core and is made the side direction moving core fixing on the direction of loosing core during matched moulds.

As the preferred version of technique scheme, hold down gag comprises wedge block, and the side direction moving core is provided with and the suitable groove of wedge block shape size.

The beneficial effects of the utility model are: when die sinking, mould opening force acts on the side direction moving core by guide rail, makes the side direction moving core do the motion of loosing core.This core-pulling mechanism is simple in structure, and withdrawing power is big, the distance of loosing core, and die sinking and loosing core carries out simultaneously, and the production efficiency height is particularly useful for using on injection mold.

Description of drawings

Fig. 1 is the structural representation of the core-pulling mechanism of the utility model mould.

Fig. 2, Fig. 4, Fig. 6, Fig. 8 are the core-pulling mechanism middle guide of the utility model mould and four kinds of syndeton schematic diagrames of side direction moving core.

Fig. 3 be among Fig. 2 B-B to cutaway view.

Fig. 5 be among Fig. 4 C-C to cutaway view.

Fig. 7 be among Fig. 6 D-D to cutaway view.

Fig. 9 be among Fig. 8 E-E to cutaway view.

The direction of fixed half and moving half relative motion when direction is respectively die sinking shown in the arrow among Fig. 1.

Be labeled as among the figure: main die joint A, cover half 1, side direction moving core 2, wedge block 3, dynamic model 4, guide rail 5, knee 6, groove 7, rolling bearing 8, chute 9.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further.

Core-pulling mechanism as the mould of Fig. 1～shown in Figure 9, comprise side direction moving core 2, on cover half 1 or the dynamic model 4 guide rail 5 is installed, side direction moving core 2 is in 5 motions of the relative guide rail of the trajectory of guide rail 5 upper edge guide rails 5 during die sinking, its direction of motion be the component of die sinking direction and the direction of loosing core component vector and.Be positioned at main die joint A top among Fig. 1 and be cover half 1, be positioned at main die joint A below and be dynamic model 4, during the mould die sinking, cover half 1 and cover half 4 relative motions.Wherein, an end of side direction moving core 2 is arranged on the guide rail 5 and can moves along the trajectory of guide rail 5, because guide rail 5 is installed on cover half 1 or the dynamic model 4, when guide rail 5 is with cover half 1 or dynamic model 4 motions during die sinking, makes side direction moving core 2 and guide rail 5 produce relative motion.One section trajectory of Fig. 1 middle guide 5 upper ends is parallel with the die sinking direction, and like this in the starting stage of mould die sinking, side direction moving core 2 is consistent with the direction and the die sinking direction of guide rail 5 relative motions, and side direction moving core 2 is not done the motion of loosing core.After cover half 1 and dynamic model 4 are opened to certain distance, side direction moving core 2 moves to its trajectory and die sinking direction form an angle in the guide rail 5 one section, this moment, mould opening force began to act on the side direction moving core 2 by guide rail 5, made side direction moving core 2 do the motion of loosing core.Do in the process of the motion of loosing core at side direction moving core 2, the direction of motion that side direction moving core 2 moves along the relative guide rail 5 of the trajectory of guide rail 5 is the vector sum of the component of the component of die sinking direction and the direction of loosing core.With Fig. 1 is example, and the die sinking direction of mould parallels with vertical direction, when side direction moving core 2 is done when motion of loosing core, the direction of motion of side direction moving core 2 relative guide rails 5 motions be downward component and to the vector of right component with.This core-pulling mechanism is simple in structure, and withdrawing power is big, the distance of loosing core, and die sinking and loose core and carry out the production efficiency height simultaneously.

Side direction moving core 2 moves along the relative guide rail 5 of the trajectory of guide rail 5 in the time of can adopting multiple connected mode to realize die sinking between side direction moving core 2 and the guide rail 5, and the direction of motion is the vector sum of the component of the component of die sinking direction and the direction of loosing core.Fig. 2～Fig. 9 shows four kinds of connected modes of side direction moving core 2 and guide rail 5 respectively: as Fig. 2～Fig. 5, guide rail 5 adopts knees 6, and an end of side direction moving core 2 is enclosed within on the knee 6 and moves back and forth along the serpentine track of knee 6.In order to reduce the friction between side direction moving core 2 and the guide rail 5, make the motion smoothing of loosing core of side direction moving core 2 smooth and easy, side direction moving core 2 rolls with guide rail 5 along the trajectory of guide rail 5 and cooperates.For this reason,, can have groove 7 in the serpentine track of the upper edge, two sides of knee 6 knee 6 as Fig. 2 and Fig. 3, side direction moving core 2 by rolling bearing 8 with groove 7 roll and cooperate; In addition, as Fig. 4 and Fig. 5, also the cross section of knee 6 can be provided with rectangularly, side direction moving core 2 is by the cooperation of rolling of rolling bearing 8 and knee 6 two relative arch faces.Wherein, rolling bearing 8 preferably adopts the needle bearing that volume is little, load capacity is stronger, can make the structure of core-pulling mechanism more compact like this.

As Fig. 6～Fig. 9, guide rail 5 also can adopt chute 9, and an end of side direction moving core 2 is arranged in chute 9 and moves back and forth at chute 9.Wherein, side direction moving core 2 preferably rolls with chute 9 by rolling bearing 8 and cooperates, and can make the motion smoothing of loosing core of side direction moving core 2 smooth and easy like this.For this reason, as Fig. 6 and Fig. 7, have groove on the inwall of chute 9, rolling bearing 8 is positioned at groove.As Fig. 8 and Fig. 9, rolling bearing 8 also can be positioned at chute 9 outsides.

The pressure that side direction moving core 2 is subjected to fluid in order to prevent to inject is moved, and on cover half 1 or the dynamic model 4 hold down gag is installed, and hold down gag is pushed down side direction moving core 2 and made side direction moving core 2 fixing on the direction of loosing core during matched moulds.As Fig. 1, hold down gag comprises wedge block 3, and side direction moving core 2 is provided with and the suitable groove of wedge block 3 shapes size.During matched moulds, wedge block 3 enters and makes side direction moving core 2 fixing on the direction of loosing core in the groove.

Claims

The core-pulling mechanism of [claim 1] mould, comprise side direction moving core (2), it is characterized in that: on cover half (1) or the dynamic model (4) guide rail (5) is installed, side direction moving core (2) is in the motion of the relative guide rail of trajectory (5) of guide rail (5) upper edge guide rail (5) during die sinking, its direction of motion be the component of die sinking direction and the direction of loosing core component vector and.
The core-pulling mechanism of [claim 2] mould as claimed in claim 1 is characterized in that: side direction moving core (2) rolls with guide rail (5) along the trajectory of guide rail (5) and cooperates.
The core-pulling mechanism of [claim 3] mould as claimed in claim 1 or 2 is characterized in that: guide rail (5) adopts knee (6), an end of side direction moving core (2) to be enclosed within that knee (6) is gone up and moves back and forth along the serpentine track of knee (6).
The core-pulling mechanism of [claim 4] mould as claimed in claim 3 is characterized in that: the serpentine track of upper edge, the two sides knee (6) of knee (6) has groove (7), side direction moving core (2) by rolling bearing (8) with groove (7) roll and to cooperate.
The core-pulling mechanism of [claim 5] mould as claimed in claim 3 is characterized in that: the cross section of knee (6) is rectangular, and side direction moving core (2) rolls by rolling bearing (8) two arch faces relative with knee (6) and cooperates.
[claim 6] is characterized in that as the core-pulling mechanism of claim 4 or 5 described moulds: rolling bearing (8) adopts needle bearing.
The core-pulling mechanism of [claim 7] mould as claimed in claim 1 or 2 is characterized in that: guide rail (5) adopts chute (9), and an end of side direction moving core (2) is arranged in chute (9) and moves back and forth at chute (9).
The core-pulling mechanism of [claim 8] mould as claimed in claim 1 or 2, it is characterized in that: on cover half (1) or the dynamic model (4) hold down gag is installed, hold down gag is pushed down side direction moving core (2) and is made side direction moving core (2) fixing on the direction of loosing core during matched moulds.
The core-pulling mechanism of [claim 9] mould as claimed in claim 8 is characterized in that: hold down gag comprises wedge block (3), and side direction moving core (2) is provided with and the suitable groove of wedge block (3) shape size.