SU618715A1

SU618715A1 - Contact printer cover raising, lowering and clamping actuator

Info

Publication number: SU618715A1
Application number: SU762414991A
Authority: SU
Inventors: Исаак Шулимович Гройсман; Валерий Михайлович Кривошеев
Original assignee: Одесское специальное конструкторское бюро полиграфического машиностроения
Priority date: 1976-10-15
Filing date: 1976-10-15
Publication date: 1978-08-05

Description

Изобретение предназначено дл подъем опускани и прижима крышки контактнокопировального станка, примен емого при изготовлении фотоформ в полиграфическом производстве.The invention is intended for raising lowering and clamping the lid of a contact-copying machine used in the manufacture of photoforms in the printing industry.

Известны приводы дл контактно-копировального станка TlJ.Drives for the TlJ contact copying machine are known.

Однако отмечаетс невысока надежность работы.However, the low reliability of work.

Известен также привод дл подъема, опускани и прижима крышкиконтактно-копировального станка, содержащий шатун, соединенный с крышкой и кинематической парой, выполненной в виде ходового винта и гайки, крючок и взаимодействуюшую с ним посредством пружинной св зи собачку Г21.Also known is a drive for lifting, lowering and clamping a cover of a contact-copying machine, comprising a connecting rod connected to the cover and a kinematic pair made in the form of a lead screw and nut, a hook and a spring-loaded P17 interacting with it.

Недостатком этого привода вл етс сложность конструкции, недостаточна надежность работы.The disadvantage of this drive is the design complexity, lack of reliability.

Целью изобретени вл етс упрощение конструкции, повышение надежности и улучшение условий эксплуатации.The aim of the invention is to simplify the design, increase reliability and improve operating conditions.

Эта достигаетс тем, что uiaTyH соедипеи с ползуном, свободно сид цимThis is achieved by the fact that uiaTyH is combined with a slider, freely seated

на подвижной гайке, а крючок жестко закреплен на шатуне.on the movable nut, and the hook is rigidly fixed on the connecting rod.

На чертеже изображена кинематическа схема привода.The drawing shows a kinematic drive circuit.

Привод содержит шатун 1, один конец которого соединен с крышкой 2, а другойс ползуном 3, свободно сид шим на гайке 4, котора поступательно перемещаетс по винту 5, длина нарезки которого равна длине ее необходимого перемещени . Крышка 2 прижимаетс к остову 6 собачкой 7, шарнирно соединенной с остовом и взаимодействующей с крючком 8, жестко закрепленным на шатуне 1. Собачка 7, имеюща противовес 9, соединена с пружиной 10, закрепленной на втулке 11, свободно сид щей на винте 5. Дл ограничени хода гайки 4 служат конечные выключатели 12 и 13, взаимодействующие с горкой 14, жестко закрепленной на гайке 4.The drive includes a connecting rod 1, one end of which is connected to the cover 2, and the other with a slider 3, which is freely seated on the nut 4, which is progressively displaced along the screw 5, the length of which is cut is equal to the length of its necessary movement. The cover 2 is pressed against the skeleton 6 by a dog 7 pivotally connected to the frame and cooperating with a hook 8 fixed on the connecting rod 1. The dog 7, having a counterweight 9, is connected to a spring 10 fixed on the sleeve 11, which sits freely on the screw 5. For travel restrictions of the nut 4 are limit switches 12 and 13, interacting with the slide 14, rigidly mounted on the nut 4.

Привод работает следующим образом.The drive works as follows.

Claims

When the nut 4 is moved up the screw 5, the slider by the connecting rod 1 raises 2 until the slide 14 with the switch 12 engages. When the nut 4 is moved down, the cover 2 is lowered until it coincides with the backbone 6. With further movement, the nut 4 stops the interaction with the slide 3 and enters interaction with the sleeve 11, stretching the spring 1O. As a result of stretching the pawl, 7 coming into contact with the hook 8, pressing the connecting rod 1. cover 2 to the skeleton 6. The nut 4 moves downwards and is limited by the limit switch 13. In case of failure of the limit switches 12 or 13, the screw 5 continues to rotate, while the nut 4 , reaching the end of the cutting screw 5, is disengaged. The invention of the drive for lifting, lowering and clamping the lid of a contact-copying machine, comprising a connecting rod connected to the lid and a kinematic pair made in the form of a spindle and nut, hook and spring-loaded pawl cooperating with it, so that In order to simplify the design, increase the reliability and improve the operating conditions, the connecting rod is connected to a slider freely seated on the movable nut and the hook is rigidly fixed on the connecting rod. Sources of information taken into account in the examination: 1, Artistsky certificate of the USSR 156847, cl. B 41 E 1/00, 1963.

2. USSR author's certificate number 189311, cl. q 03 F 9/00, 1965.