CN202278715U

CN202278715U - Two-step ejecting mould mechanism

Info

Publication number: CN202278715U
Application number: CN2011204272596U
Authority: CN
Inventors: 牟维军
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-25
Filing date: 2011-10-25
Publication date: 2012-06-20
Anticipated expiration: 2021-10-25

Abstract

A two-step ejecting mould mechanism comprises a fixed mould bearing plate, a movable mould bearing plate, a fixed template, a movable template, a mold core, a push rod, a return rod, a supporting plate, a bolt, a positioning ring, a sprue bushing, an ejector, an ejector plate, an ejector pressure plate, a slide block and an inclined pressing block. During the first ejecting, the piece pushing plate and the ejector act simultaneously so as to pull out products from the mold core, the product wrapping force is eliminated, during the second ejecting, the ejector is used for ejecting products from the cavity of the piece pushing plate out the mould. The mould acts firmly and reliably, the pressure transmission is excellent, the mould has a simple structure, the product quality is excellent, and the two-step ejecting mould mechanism is suitable for a metal die casting mould and a plastic injection mould; meanwhile, the mould is safe and environment-friendly.

Description

The mold mechanism that a kind of secondary is released

Technical field

The present invention relates to injection moulding and die cast metal mould, is a kind of secondary ejecting mechanism mould.

Background technology

At present; The secondary ejecting mechanism that on injection molding and die cast metal mould, is adopted is more; Size and profile according to goods; The difference that tolerance etc. require can be divided into: wedge slide block type secondary ejecting mechanism, swing block type secondary ejecting mechanism, wedge rod-pulling type secondary ejecting mechanism, push pole push tube secondary ejecting mechanism, link-type secondary ejecting mechanism, Eight characters fork secondary ejecting mechanism.Above-mentioned these secondary ejecting mechanisms, though their actions are solid and reliable, the pressure transmission is good, quality of item is graceful; But they the following defective can occur in actual production, because the die sinking initial stage, the mechanism that has can not move at once, is trapped in cover half one side after the goods die sinking; Goods can't be deviate from, realize deviating from of goods, spacing somatotype mechanism must be set on mould; Simultaneously mould is prone to stuckly, and slide block and push rod fracture, mold damage.Again because after once releasing, dynamic model continues to make its finally demould mechanism action in the process of die sinking; Push rod is with releasing in the driven model cavity of goods, and the spring that is installed on the mould contacts with the dynamic model die cavity all the time, so very big to the influence that resets of pull bar; Because can not proper reset; Mould is in the great risk when motion, and very easily mold damage groundwork part causes mould to be scrapped.Release the defective of mold mechanism in order to overcome above-mentioned secondary, the spy provides following a kind of novel die mechanism to solve this difficult problem.

Summary of the invention

The present invention carries the mold mechanism that a kind of secondary is released, and it is achieved in that after the mould active and inactive mold is opened; Goods are moved dynamic model on one side with the action of mould dynamic model part; Injector knock-pin promotion ejector retainner plate this moment (14) drives push rod (19) promotion push piece plate (20) to be deviate from goods (5) from the core (6) on mould dynamic model one side, though goods have been deviate from from core, goods are still stayed in the die cavity of push piece plate (20); It is up that this moment, the injector push rod continued promotion ejector retainner plate (14); At this moment the inclined-plane that is installed in the slide block (16) on the ejector retainner plate (14) contacts with the inclined-plane of baroclinic block (17) on being installed in moving platen (10), forces slide block (16) in mould, to slide, when the hole on the slide block and push rod (19) when contacting; Push rod (19) just gets into that (annotate: the bore dia on the slide block must be greater than rod diameter in the hole of slide block (16); So that push rod gets in the slider bore smoothly), at this moment the injector knock-pin continues to release, because push rod (19) is fallen into and eliminated release power in the slider bore; Therefore push piece plate (20) no longer moves; Ejector retainner plate only promotes thimble (22) action, then thimble (22) goods (5) from the die cavity of push piece plate (20) outside the launch mode, goods (5) drop out outside the mould by deadweight.The mold mechanism that a kind of secondary is released, it solved since the die sinking initial stage mechanism can not move at once, be trapped in cover half one side after the goods die sinking, the difficult problem that goods can't be deviate from.Solved mould and be prone to stuck slide block and push rod, its push rod has been fractureed, the problem of mold damage.Solved because after once releasing, dynamic model continues to make its finally demould mechanism action in the process of die sinking; Push rod is with releasing in the driven model cavity of goods; The spring that is installed on the mould contacts with the dynamic model die cavity all the time, and the pull bar influence resets, and mould groundwork part is prone to impaired technical barrier.The mold mechanism that a kind of secondary is released; It is characterized in that: cover half backing plate (1) and solid plate (7) are fastenedly connected with screw (2); The Kong Zhonghou that sprue bush (21) is installed in locating ring (3) is fastened on the cover half backing plate (1) with screw again; Core (6) uses moving platen (10) to compress and be fastenedly connected with screw with moving platen (9) matched in clearance again; Push piece plate (20) connects with push rod (19), and return bar (8) and thimble (22) are installed in uses thimble pressing plate (14) to compress and fastening with screw again on the ejector retainner plate (12), and slide block (16) is installed in the t shape groove of thimble pressing plate (14) also that one-tenth is slidingly matched; Spring (18) is installed between ejector retainner plate (12) and the slide block (16); The Kong Zhonghou that baroclinic block (17) is installed in moving platen (10) uses screw fastening again, and support plate (23) and dynamic model backing plate (15) are fastenedly connected with screw, and moving platen (9) support plate (23) and moving platen (15) are fastenedly connected with screw (11).

Description of drawings

Below in conjunction with accompanying drawing the present invention is further specified

Shown in the figure:

Fig. 1 is a mould matched moulds situation sectional side elevation

Fig. 2 is a mould die sinking situation sectional side elevation

Sequence number is represented respectively among the figure:

1---cover half backing plate 2---screw 3---locating ring

4---sprue expects 5 with fixed attention---goods 6---cores

7---solid plate 8---return bar 9---moving platens

10---moving platen 11---screw 12---ejector retainner plates

13---screw 14---thimble pressing plate 15---dynamic model backing plates

16---slide block 17---baroclinic block 18---springs

19---push rod 20---push piece plate 21---sprue bush

22---thimble 23---support plate

The specific embodiment:

Be the mold mechanism that a kind of secondary is released shown in the figure, its practical implementation process is: when the mould active and inactive mold was opened, goods (5) and running gate system sprue coagulated material (4) and are pulled to dynamic model on one side; When dynamic model moves to die sinking apart from coagulating greater than goods (5) and running gate system sprue when expecting (4) sum with injector; Dynamic model stops action, and injector knock-pin promotion thimble pressing plate this moment (14) drives push rod (19) and thimble (22) moves simultaneously, deviates from goods (5) from core (6); Though at this moment goods are deviate from from core (6); But goods (5) are still stayed in the die cavity of push piece plate (20), can't drop out outside the mould, and it is up that this moment, the injector knock-pin continued promotion thimble pressing plate (14); The inclined-plane that is installed in the slide block (16) in the t shape groove of thimble pressing plate (14) contacts with the inclined-plane of baroclinic block (17) on being installed in moving platen (10); At this moment baroclinic block (17) forces slide block (16) to do side direction motion in the mould, and the hole on slide block (16) slides into and push rod (19) when contacting, and push rod (19) is just fallen in the hole of slide block; [annotate: the diameter of push rod (19) must be gone up the diameter in hole less than slide block (16), so that push rod (19) gets in the hole of slide block (16) smoothly].Because push rod (19) gets in the hole of slide block (16); Push rod this moment (19) loses pressure; So push piece plate (20) no longer moves; And ejector retainner plate (14) continuation at this moment is up, drives the thimble (22) that is installed on the ejector retainner plate (13) and from the die cavity of push piece plate (20), releases goods (5), and goods drop out outside the mould by deadweight.During matched moulds; Opposite action that injector drives the mould dynamic model when partly doing die sinking; Return bar (8) contacted with solid plate (7) and exerted pressure before this; Promote return bar (8) the anti-position that pushes back of thimble pressing plate (14), because the return of thimble pressing plate (14), at this moment the matched moulds situation is thrown off, got back to push rod (19) with the hole on the slide block (16).After (as shown in Figure 1) treated the complete closure of each profile, just carry out the injection moulding of following one-period, above actuation cycle is carried out, and accomplishes the moulding of goods.

Claims

1. the mold mechanism released of a secondary; It is characterized in that: cover half backing plate (1) and solid plate (7) are fastenedly connected with screw (2); The Kong Zhonghou that sprue bush (21) is installed in locating ring (3) is fastened on the cover half backing plate (1) with screw again; Core (6) uses moving platen (10) to compress and be fastenedly connected with screw with moving platen (9) matched in clearance again; Push piece plate (20) connects with push rod (19), and return bar (8) and thimble (22) are installed in uses thimble pressing plate (14) to compress and fastening with screw again on the ejector retainner plate (12), and slide block (16) is installed in the t shape groove of thimble pressing plate (14) also that one-tenth is slidingly matched; Spring (18) is installed between ejector retainner plate (12) and the slide block (16); The Kong Zhonghou that baroclinic block (17) is installed in moving platen (10) uses screw fastening again, and support plate (23) and dynamic model backing plate (15) are right after with screw, and moving platen (9) support plate (23) and moving platen (15) are fastenedly connected with screw (11).