CN203063063U - Mold with secondary ejection - Google Patents

Abstract

The utility model discloses a mold with secondary ejection. The mold comprises a fixed-mold cushion plate, a moving-mold cushion plate, a fixed mold plate, a moving mold plate, a mold core, a pushing rod, a return rod, a bearing plate, a screw, a positioning ring, a sprue bush, an ejecting needle, an ejecting needle plate, an ejecting needle pressing plate, a sliding block and an inclined pressing block. When in the first ejection, a piece pushing plate and the ejecting needle act simultaneously to eject the product from the mold core, so that the packaging force of the product is eliminated; and when in the second ejection, the product is pushed out of the mold from a mold cavity of the piece pushing plate by the ejecting needle. The mold disclosed by the utility model is firm and reliable, good in pressure transmission, simple in structure and good in product quality, is suitable for being used on a metal die-casting mold and a plastic injection mold and simultaneously is safe and environment-friendly.

Description

The mould that secondary is released

Technical field

The present invention relates to injection moulding and die cast metal mould, is the mould that secondary is released.

Background technology

At present, the secondary ejecting mechanism that adopts on injection molding and die cast metal mould 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, the quality of item grace, 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, be trapped in cover half one side after the goods die sinking, goods can't be deviate from, realize deviating from of goods, must spacing somatotype mechanism be set at mould, mould is easily stuck simultaneously, slide block and push rod frangibility, mold damage.Again because after once releasing; dynamic model continues in the process of die sinking; make its finally demould mechanism action; push rod will be released in the driven model cavity of goods, and the spring that is installed on the mould contacts all the time with the dynamic model die cavity, 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 provides the mould that secondary is released, it is to realize like this, 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) goods (5) is deviate from from the core (6) on mould dynamic model one side, though goods have been deviate from from core, but 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), force slide block (16) in mould, to slide, when the hole on the slide block and push rod (19) when contacting, push rod (19) just enters 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 enters in the slider bore smoothly), at this moment the injector knock-pin continues to release, because push rod (19) is fallen into and has been eliminated release power in the slider bore, therefore push piece plate (20) no longer moves, ejector retainner plate only promotes thimble (22) action, so from the die cavity of push piece plate (20) outside the launch mode, goods (5) drop out outside the mould by deadweight thimble (22) goods (5).The mould that 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 the easy stuck slide block of mould 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 will be released in the driven model cavity of goods; the spring that is installed on the mould contacts all the time with the dynamic model die cavity, and pull bar influence resets, and mould groundwork part is impaired technical barrier easily.The mould that 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), 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), slide block (16) is installed in the t shape groove of thimble pressing plate (14) and becomes to be 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, support plate (23) and dynamic model backing plate (15) are fastenedly connected with screw, and moving platen (9) support plate (23) is fastenedly connected with screw (11).

Description of drawings

The present invention is further described below in conjunction with accompanying drawing

Shown in the figure:

Fig. 1 is the sectional side elevation of mould matched moulds situation

Fig. 2 is the sectional side elevation of mould die sinking situation

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---sprue bush 21---sprue bush

22---thimble 23---support plate

The specific embodiment:

It is the mould that secondary is released shown in the figure, its specific implementation process is: when the mould active and inactive mold is opened, goods (5) and running gate system sprue coagulate 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, injector knock-pin promotion thimble pressing plate this moment (14) drives push rod (19) and thimble (22) moves simultaneously, goods (5) are deviate from 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, 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, hole on slide block (16) slides into push rod (19) when contacting, 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) enters in the hole of slide block (16) smoothly].Because push rod (19) enters in the hole of slide block (16), push rod this moment (19) loses pressure, so push piece plate (20) no longer moves, and at this moment ejector retainner plate (14) continues up, the thimble (22) that drive is installed on the ejector retainner plate (13) is released goods (5) from the die cavity of push piece plate (20), 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 push rod (19) is thrown off with the hole on the slide block (16), get back to the matched moulds situation.(as shown in Figure 1) treat the complete closure of each profile after, just carry out the injection moulding of following one-period, more than moving circulation is carried out, and finishes the moulding of goods.

Claims (1)

1. the mould released of 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), 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), slide block (16) is installed in the t shape groove of thimble pressing plate (14) and becomes to be 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, 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).

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