SU973380A1

SU973380A1 - Mould for making polymeric articles

Info

Publication number: SU973380A1
Application number: SU813285520A
Authority: SU
Inventors: Борис Исаакович Штейнберг; Леонид Нисонович Меерович
Priority date: 1981-05-13
Filing date: 1981-05-13
Publication date: 1982-11-15

Description

(54) ЛИТБЕВАЯ ФОРМА ДЛЯ ПОЛИМЕРНЫХ ИЗДЕЛИЙ(54) LITHIUM FORM FOR POLYMERIC PRODUCTS

1one

Изобретение относитс к переработке пластмасс и может быть использовано дл изготовлени методом лить под давлением полых изделий.The invention relates to the processing of plastics and can be used for the manufacture of injection-molded hollow articles.

Известна литьева форма дл изготовлени полых полимерных изделий, содержаща подвижную и неподвижную полуформы, основную и дополнительную рычажные системы дл перемещени знаков и сталкивающей планки 1.A casting mold for the manufacture of hollow polymer products is known, comprising movable and stationary half-molds, main and additional lever systems for moving signs and a push bar 1.

Недостатком известной формы вл етс сложность конструкции рычажного механизма .A disadvantage of the known form is the complexity of the design of the lever mechanism.

Наиболее близкой к предлагаемому вл етс литьева форма дл полимерных изделий , содержаща подвижную и неподвижную полуформы, рычажной механизм, св занный через т гу со сталкивающей планкой и щарнирно соединенный с полуформами и с поперечной планкой, траверсу с закрепленными в ней знаками 2.Closest to the present invention is a casting mold for polymer products, containing movable and stationary half-molds, a lever mechanism connected through a pull to a pushing bar and pivotally connected to the half-molds and to the transverse bar, traverse with signs fixed in it 2.

Однако в известной форме съем изделий осуществл етс недостаточно надежно.However, in a known form, the removal of articles is not carried out reliably.

Цель изобретени - повыщение надежности изделий.The purpose of the invention is to increase product reliability.

Поставленн цель достигаетс тем, что литьева форма дл полимерных изделий, содержаща подвижную и неподвижную полуформы , рычажный механизм, св занный через т гу со сталкивающей планкой и шарнирно соединенный с полуформами и с поперечной планкой, траверсу с закрепленными в ней знаками, снабжена промежуточной планкой с ходовым винтом, выполненным с участками с противоположными направлени ми резьбы, на одном из которых размещена поперечна планка, а на другом - траверса. На фиг. 1 изображена литьева форма, The goal is achieved by the fact that the injection mold for polymer products, containing movable and stationary half-molds, a lever mechanism connected through a bar with a colliding bar and pivotally connected to the half-molds and with a transverse bar, traverse with signs fixed in it, is provided with an intermediate bar with a lead screw made with portions with opposite thread directions, on one of which a transverse bar is placed, and on the other a traverse. FIG. 1 shows the casting mold,

10 общий вид; на фиг. 2 - разрез А-А на фиг. 1.10 general view; in fig. 2 shows section A-A in FIG. one.

Литьева форма содержит подвижную 1 и неподвижную 2 полуформы, рычажный механизм 3 св занный т гами 4 со сталкивающей планкой 5 и щарнирно соединенный с полуформами 1 и 2 и с поперечной планкой 6. В промежуточной планке 7, также щарнирно св занной с рычажным механизмом 3, установлен ходовой винт 8, выполненный сThe casting mold contains a movable 1 and a fixed 2 half-molds, a lever mechanism 3 connected by means of 4 with a pushing bar 5 and hingedly connected to the half-molds 1 and 2 and to the cross bar 6. In the intermediate bar 7, also hingedly connected with the lever mechanism 3, installed screw 8, made with

Claims

20 sections 9 and 10 with opposite thread directions, on one of which a transverse bar 6 is placed, and on the other - a yoke 11, in which signs 12 are fixed. The distance H between the transverse bar 6 and the traverse 11 exceeds the length of the product 13. Molding form works as follows. After injection of the polymer melt and technological exposure, the form is opened, while the movable half-form 1 drives the lever mechanism 3, thereby lowering the transverse bar 6 and the pushing bar 5 connected to it by the threads 4, and due to the rotation of the driving screw 8, the yoke 11 jointly with signs 12 moves up. As a result of the oncoming movement of the signs 12 and the pushing bar 5, the stroke of the latter approaches half the length of the product being pushed. When the form is closed, its elements return to their original position and then the cycle repeats. The use of the present invention allows for reliable operation of the injection molding equipment. Formula of the Injection Molding mold for polymeric products containing movable and stationary half-molds, a lever mechanism connected through a pull bar and pivotally connected to the half-molds and to the cross bar, a traverse with fixed signs in it, characterized in that increase the reliability of removal of products, it is equipped with an intermediate plate with a lead screw, made with sections with opposite thread directions, on one of which there is a transverse bar, and on the other a traverse. Sources of information taken into account in the examination 1. USSR author's certificate number 730584, cl. B 29 C 5/00, 1978.

2. USSR author's certificate number 534364, cl. In 29 C 5/00, 1975 (prototype).