CN201506006U

CN201506006U - Mould with core pulling structure

Info

Publication number: CN201506006U
Application number: CN2009202228426U
Authority: CN
Inventors: 李涛波
Original assignee: YANTAI LUTONG PRECISION ALUMINIUM CO Ltd
Current assignee: YANTAI LUTONG PRECISION ALUMINIUM CO Ltd
Priority date: 2009-09-22
Filing date: 2009-09-22
Publication date: 2010-06-16
Anticipated expiration: 2019-09-22

Abstract

The utility model discloses a mould with a core pulling structure, which comprises a fixed mould and a moving mould matched with the same; a mould cavity is formed between the fixed mould and the moving mould; the fixed mould is provided with a core pulling structure with a spring; the core of the core pulling structure can be pulled out or pushed in from the mould cavity; the core pulling structure comprises a rotary corner block; when in mould matching, the corner block rotates under the pressure of the moving mould, to push the core of the core pulling structure into the mould cavity; when in mould opening, because the pressure of the moving mould is lost, the resilience of the spring leads the corner block to rotate reversely, so as to pull the core of the core pulling structure out of the mould cavity; and therefore, the mould with the core pulling structure has the advantages of simple structure, practicality and reliability, realizes the synchronization of mould opening and core pulling, and does not prolong the injection molding cycle.

Description

Mould with the structure of loosing core

Technical field

The utility model relates to a kind of mould, relates in particular to a kind of mould with the structure of loosing core.

Background technology

At casting field, in order to be cast as foundry goods, often need in the die cavity of mould, put into core with definite shape, after finishing, casting again core is loosed core, therefore the structure of loosing core need be installed in grinding tool.The existing structure of loosing core comprises mainly that the mechanical device that hydraulic pressure or air pressure drive is loosed core, the rack-and-pinion device is loosed core and Angle Pin is loosed core etc., hydraulic pressure or the pneumatic structure of loosing core need oil cylinder, hydraulic oil and Stroke Control assembly etc., the structure more complicated, simultaneously owing to be subjected to the restriction of mould structure and volume, oil cylinder or cylinder dimensions often can not be too big, and die sinking and the asynchronism(-nization) of loosing core step, increased injection cycle.And Angle Pin to loose core be present the most a kind of mode of utilization, it is advantageous that withdrawing power is big, but need to cooperate preferably, for the requirement of processing than higher, and when work, easily bend, fracture, comparatively difficult when processing the Angle Pin hole for the mould that the angle of loosing core is complicated.

The utility model content

The purpose of this utility model is to provide a kind of simple in structure, mould that practical and reliable has the structure of loosing core, and can realize die sinking and loose core synchronously.

For achieving the above object, the utility model provides a kind of mould with the structure of loosing core, comprise cover half and the dynamic model that cooperates with it, form die cavity between described cover half and the described dynamic model, described cover half lower end vertically has two through holes that are communicated with described die cavity, being equipped with one in each described through hole looses core, on each described loosing core, laterally have a connecting hole, described cover half lower end has first groove that traverses two described through holes, in described first groove connection bearing pin is installed, a described connecting hole is passed at the two ends of described connection bearing pin respectively, described cover half bottom is having a recess on the matched moulds surface between two described through holes, have second groove that traverses the arc of described recess in the bottom of described recess, in the described recess comer block is installed, laterally have locating hole on the described comer block, described comer block is being enclosed within on the alignment pin by described locating hole, the two ends of described alignment pin are installed in described second groove, described comer block closely contacts with the described bearing pin that is connected, when described comer block when described alignment pin is rotated, described comer block drives described connection bearing pin corresponding sports in described first groove, respectively have one the 3rd groove at the opening part that is positioned at each described through hole, described bottom of loosing core is with back-up ring successively, spring and end cap, described back-up ring is positioned at described the 3rd groove, and described end cap is fixed on described lower end of loosing core.

Mould with the structure of loosing core of the present utility model, at the 4th groove that on the cover half on the first groove top between two described through holes, has arc, in described the 4th groove contact sleeve is installed, described contact sleeve is enclosed within on the described connection bearing pin, and described comer block closely contacts with the described bearing pin that is connected by described contact sleeve.

Mould with the structure of loosing core of the present utility model, on the cover half that is positioned at described recess both sides, vertically respectively have the 5th groove that connects with described second groove, have two installing holes in each described the 5th groove, be fixed with a described fixed block by the trip bolt that is installed on the described installing hole in each described the 5th groove, described fixed block is provided with arc groove, described arc groove matches with described second groove and surrounds a circular hole, and the two ends of described alignment pin are positioned at described circular hole.

Mould with the structure of loosing core of the present utility model, the turning of described comer block are the right angle.

Mould with the structure of loosing core of the present utility model, when matched moulds, dynamic model is with being subjected to spring action of comer block and the second portion of perk is depressed under die opening state, make comer block turn clockwise around alignment pin, the first of comer block promotes contact sleeve and moves up, and then it is upwards mobile in first groove to drive the connection bearing pin, thereby promoting two looses core and extend in the die cavity, when die sinking, owing to lost the pressure of dynamic model, the restoring force of spring makes to loose core for two and moves down, and extracts out from die cavity, looses core to move down to drive axial following the moving of connecting pin, and then the first that makes contact sleeve promote comer block moves down, make comer block rotate counterclockwise, thereby make the second portion perk of comer block, realize the die sinking and synchronous the finishing that loose core around alignment pin, therefore, mould structure with the structure of loosing core of the present utility model is simple, practical reliable, and realized die sinking and loose core synchronous, can not increase injection cycle.

Description of drawings

Fig. 1 looks cutaway view for the master of mould under the matched moulds state with the structure of loosing core of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to cutaway view;

Fig. 3 is the cutaway view of Fig. 2 under die opening state;

Fig. 4 is the topology view of the cover half of the mould with the structure of loosing core of the present utility model;

Fig. 5 is the right side view of Fig. 4;

Fig. 6 looks up the partial structurtes view for Fig. 4's;

Fig. 7 is the installation diagram with mould of the structure of loosing core of the present utility model.

The specific embodiment

A kind of preferred specific embodiment of the present utility model is now described in conjunction with the accompanying drawings.

As Fig. 1, Fig. 2 and shown in Figure 3, the mould with the structure of loosing core of the present utility model comprises cover half 1 and the dynamic model 2 that cooperates with it.Wherein, form die cavity 3 between cover half 1 and the dynamic model 2.Cover half 1 lower end vertically has the through hole 4 of two circles that are communicated with die cavity 3, is equipped with one in each through hole 4 and looses core 5, and loosing core at each laterally has the connecting hole 6 of a circle on 5.In conjunction with Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7, cover half 1 lower end has first a long and narrow groove 7 that traverses two through holes 4, be equipped with one in first groove 7 and connect bearing pin 8, a connecting hole 6 is passed at the two ends that connect bearing pin 8 respectively, is used for two loosed core 5 being connected as a single entity.Cover half 1 bottom is at the recess 9 that has a rectangle on the matched moulds surface between two through holes 4, have second groove 10 that traverses the arc of recess 9 in the bottom of recess 9, comer block 11 is installed in the recess 9, comer block 11 comprises first 21 and second portion 22, turning between first 21 and the second portion 22 is the right angle, laterally have locating hole 12 on the comer block 11, locating hole 12 is enclosed within on the alignment pin 13.On the cover half 1 that is positioned at recess 9 both sides, vertically respectively have the 5th groove 23 that connects with described second groove 10, have two installing holes 24 in each the 5th groove 23, be fixed with a fixed block 14 by the trip bolt 25 that is installed on the installing hole 24 in each the 5th groove 23, fixed block 14 is provided with arc groove, arc groove matches with second groove 10 and surrounds a circular hole, the two ends of alignment pin 13 are positioned at circular hole, are used to hold alignment pin 13.At the 4th groove 19 that on the cover half 1 on first groove, 7 tops between two through holes 4, has arc, in the 4th groove 19 contact sleeve 20 is installed, contact sleeve 20 is enclosed within and connects on the bearing pin 8, the first 21 of comer block 11 by contact sleeve 20 be connected bearing pin 8 and closely contact.When comer block 11 when alignment pin 13 is rotated, the first 21 of comer block 11 drives and connects bearing pin 8 corresponding sports in first groove 7, drive two and loose core 5 by connecting bearing pin 8 again, 5 extract or push die cavity 3 out thereby two loosed core at through hole 4 corresponding sports.Respectively have one the 3rd groove 15 at the opening part that is positioned at each through hole 4, loose core 5 bottom is with back-up ring 16, spring 17 and end cap 18 successively, back-up ring 16 is positioned at the 3rd groove 15, end cap 18 is fixed on 5 the lower end of loosing core, under the die opening state, comer block 11 is subjected to spring 17 its second portions 22 of effect to be in the perk state.

Briefly explain the working process of mould with the structure of loosing core of the present utility model below.

When matched moulds, dynamic model 2 is with being subjected to spring 17 effect of comer block 11 and the second portion 22 of perk is depressed under die opening state, make comer block 11 turn clockwise around alignment pin 13, the first 21 of comer block 11 promotes contact sleeve 20 and moves up, and then it is upwards mobile in first groove 7 to drive connection bearing pin 8, loose core and 5 extend in the die cavity 3 thereby promote two, spring 17 is in the state that is stretched.As shown in Figure 2.When die sinking, owing to lost the pressure of dynamic model 2, the restoring force of spring 17 makes to loose core for two and 5 moves down, extract out from die cavity 3, loosing core 5 moves down to drive and connects bearing pin 8 and move down, and then the first 21 that makes contact sleeve 20 promote comer block 11 moves down, make comer block 11 rotate counterclockwise around alignment pin 13, thereby make second portion 22 perks of comer block 11, realize die sinking and loose core finishing synchronously, as shown in Figure 3.Therefore, the mould structure with the structure of loosing core of the present utility model is simple, practical reliable, and realized die sinking and loose core synchronous, can not increase injection cycle.

Those skilled in the art all know; under the situation that does not break away from the utility model design; the utility model can form the various deformation of the above-mentioned specific embodiment by the displacement of customary means, yet it all will fall into the protection domain that the utility model claims are limited.

Claims

1. mould with the structure of loosing core, comprise cover half (1) and the dynamic model (2) that cooperates with it, form die cavity (3) between described cover half (1) and the described dynamic model (2), it is characterized in that, described cover half (1) lower end vertically has two through holes (4) that are communicated with described die cavity (3), be equipped with in each described through hole (4) one loose core (5), on each described loosing core (5), laterally have a connecting hole (6), described cover half (1) lower end has first groove (7) that traverses two described through holes (4), be equipped with in described first groove (7) and connect bearing pin (8), a described connecting hole (6) is passed at the two ends of described connection bearing pin (8) respectively, described cover half (1) bottom has a recess (9) on the matched moulds surface that is positioned between two described through holes (4), have second groove (10) that traverses the arc of described recess (9) in the bottom of described recess (9), comer block (11) is installed in the described recess (9), laterally have locating hole (12) on the described comer block (11), described comer block (11) is being enclosed within on the alignment pin (13) by described locating hole (12), the two ends of described alignment pin (13) are installed in described second groove (10), described comer block (11) closely contacts with the described bearing pin (8) that is connected, when described comer block (11) when described alignment pin (13) is rotated, described comer block (11) drives described connection bearing pin (8) corresponding sports in described first groove (7), respectively have one the 3rd groove (15) at the opening part that is positioned at each described through hole (4), the bottom of described loosing core (5) is with back-up ring (16) successively, spring (17) and end cap (18), described back-up ring (16) is positioned at described the 3rd groove (15), and described end cap (18) is fixed on the lower end of described loosing core (5).

2. the mould with the structure of loosing core according to claim 1, it is characterized in that, on the cover half (1) that is positioned at first groove (7) top between two described through holes (4), have the 4th groove (19) of arc, contact sleeve (20) is installed in described the 4th groove (19), described contact sleeve (20) is enclosed within on the described connection bearing pin (8), and described comer block (11) closely contacts with the described bearing pin (8) that is connected by described contact sleeve (20).

3. the mould with the structure of loosing core according to claim 2, it is characterized in that, on the cover half (1) that is positioned at described recess (9) both sides, vertically respectively have the 5th groove (23) that connects with described second groove (10), have two installing holes (24) in each described the 5th groove (23), be fixed with a described fixed block (14) by the trip bolt (25) that is installed on the described installing hole (24) in each described the 5th groove (23), described fixed block (14) is provided with arc groove, described arc groove matches with described second groove (10) and surrounds a circular hole, and the two ends of described alignment pin (13) are positioned at described circular hole.

4. the mould with the structure of loosing core according to claim 3 is characterized in that, described comer block (11) comprises first (21) and second portion (22), and the turning between described first (21) and the second portion (22) is the right angle.