SU1514633A1 - Casting mould having two-stage ejector system - Google Patents

Description

The invention relates to the processing of plastics into injection molded products. The purpose of the invention is to improve the reliability of the mold. Injection mold contains fixed 1 and movable 2 plates, base plate 3 rigidly connected with the movable plate, pre-ejection plate 4 and final ejection plate 6 with ejector 7 fixed in it, springs 11 installed between the plates of preliminary 4 and

2

of the final 6 ejection, and the mechanism of forced joint displacement of the ejection plates, including a copier 9 mounted on the base plate, interacting with a spring-loaded gripper 10 placed on the pre-ejection plate 10. A spring-loaded plate 12 is placed between the base plate 3 and the final ejection plate 6 stop 13 is made. When the ejection plates are moved, the stop 13 interacts with the spring-loaded plate 12, moving it. After the spring-loaded grip 10, interacting with the cam 9, comes out of engagement with the final ejection plate 6 and the spring-loaded plate 12, these plates move towards each other. Due to their impact, dropping of the hanging products from the pushers is achieved. 3 il.

1514633 A1

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1514633

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The invention relates to means for

plastics processing into products.

The purpose of the invention is to improve the reliability of the mold.

FIG. 1 shows the injection mold in the closed state; in fig. 2 - the same, at the time of pushing the product; in fig. 3 - the same, at the moment of dumping the items stuck on the ejector (second stage of pushing).

The injection mold comprises a fixed plate 1, a movable plate 2, a support plate 3 rigidly connected with it, a pre-ejection plate 4 4 and a spring 5 placed between the pre-ejection plate 4 and the final ejection plate 6. In the final ejection plate 6, ejectors 7 and counter pushers 8 are secured. The injection mold contains a mechanism for forcing the joint ejection plates together, including a copier 9 fixed in the base plate 3, interacting with the grip 10 placed on the pre-ejection plate 4 with the possibility of interaction with the final plate 6 ejection and a spring 11. On the gripper 10 it is arranged to cooperate with the plate 12, an emphasis 13. A plate 12 placed between the base plate 3 and the plate 6 of the final exhaustion Bani, biased by a spring 14. The movable plate 2 comprises a mold cavity in which the molded product 15. The mold 16 also comprises a pusher.

Injection form works as follows.

After injection of the material and the required shutter speed, the mold is opened. In this case, the pusher 16 stops the pre-ejection plate 4 and its associated with it by gripping 10 the final ejection plate 6. The ejector 7, fixed in the plate 6 of the final ejection, removes the product 15 from the movable plate 2. The grip 10, resting against the abutment 13 in the spring-loaded

plate 12, moves it, while compressing the spring 14. After the grip 10 will interact with the cam 9 installed in the base plate 3, it comes out of the interaction with the plate 6 final ejection and spring plate 12. Under the action of the springs 5 and 14 plates 6 and 12 abruptly move towards each other and hit each other. As a result, the product 15 is separated from the ejector 7. When the injection mold is closed, the counter pushers 8, interacting with the fixed plate 1, move the final ejection plate 6 and the preliminary ejection plate 4 to the initial position. When this spring plate 12 under the action of the spring 14 is returned to its original position. The gripper 10 under the action of the spring 11 also returns to its original position. Injection mold is again ready to work.

Claims (1)

Claim Injection mold with a two-stage ejection system, containing fixed and movable plates, a support plate rigidly connected to the movable plate, a preliminary ejection plate and a final ejection plate with ejector fixed in it, springs installed between the preliminary and final ejection plates, and a mechanism for forced joint displacement ejection plates including a copier mounted on a base plate interacting with a pre-ejection plate placed on the plate I spring-loaded grip, characterized in that, in order to improve reliability in operation, it is equipped with a spring-loaded plate, placed between the base plate and the final ejection plate, and on the spring-loaded grip an emphasis is made with the possibility of interaction with the spring-loaded plate. 1514633 u 5 ιζ n z z Fig 2 C 6/2 8 5 Ζ / !five // S 18 9 Fig.8 Compiled by S. Roshchin