SU912430A1

SU912430A1 - Apparatus for pulse-type feeding of electrode wire

Info

Publication number: SU912430A1
Application number: SU792725300A
Authority: SU
Inventors: Николай Михайлович Тарасов; Борис Ананьевич Слесарев; Николай Иванович Гурнов; Николай Андреевич Варуха
Original assignee: Харьковский авиационный институт им.Н.Е.Жуковского
Priority date: 1979-02-28
Filing date: 1979-02-28
Publication date: 1982-03-15

Description

(54) УСТРОЙСТВО ДЛЯ ИМПУЛЬСНОЙ ПОДАЧИ ЭЛЕКТРОДНОЙ ПРОВОЛОКИ(54) DEVICE FOR PULSE ELECTRODE WIRING

1one

Изобретение относитс к сварочной технике и предназначено дл использовани в качестве рабочего элемента подающих механизмов аппарата дл сварки и пайки.The invention relates to a welding technique and is intended for use as a working element of the feeder mechanisms of an apparatus for welding and brazing.

Известен захват дл импульсной, подачи проволоки, содержащий размещенные в корпусе подпружиненную направл ющую и захватные элементы в виде роликов 1.A gripper for pulsed wire feeding is known, which comprises spring loaded guide and gripping elements in the form of rollers 1 arranged in a housing.

Недостатком этого захвата вл етс невозможность расклинивани роликов дл выемки проволоки из захвата в направлении, обратном подаче.The disadvantage of this grip is the impossibility of wedging the rollers to remove the wire from the grip in the opposite direction of the feed.

Известно также устройство дл импульсной подачи проволоки, содержащее приводной элемент поступательного движени захвата , выполненного в виде размещенных в корпусе подпружиненной направл ющей, захватных элементов. Данный механизм позвол ет расклинивать при нажатии на отжимной клапан захватные элементы дл выемки проволоки 2.It is also known a device for pulsed wire feeding, comprising a drive element of a translational movement of a gripper, made in the form of a spring-loaded guide, gripping elements arranged in a housing. This mechanism allows wedging, by pressing on the squeeze valve, the gripping elements for the recess of the wire 2.

Однако такой механизм не ограничивает усилие подачи проволоки, что особенно важно при подаче проволоки до упора, например при возбуждении дуги от короткого замыкани . При подаче этим механизмом .проволоки до упора в случае, если щаг подачи не кратен.However, such a mechanism does not limit the wire feed force, which is especially important when wire is fed all the way, for example, when a short circuit arc is excited. When applying this mechanism. Wire until it stops in case the feed rod is not a multiple.

или не равен рассто нию между торцом проволоки и упором (деталью), происходит ее искривление, поскольку поступательное перемещение передаетс захвату через его корпус , при этом расклинивание зажимных элементов исключено, даже при значительном усилении сопротивлени подаче проволоки.or not equal to the distance between the end of the wire and the stop (part), it is curved, because the translational movement is transmitted to the grip through its body, while wedging the clamping elements is excluded, even with a significant increase in resistance to the wire feed.

Цель изобретени - устранение искривлени проволоки путем ограничени усили ее подачи.The purpose of the invention is to eliminate the curvature of the wire by limiting its feeding force.

Поставленна цель достигаетс тем, что The goal is achieved by the fact that

10 приводной элемент поступательного движени захвата соединен с отжимным клапаном. Кроме того, между отжимным клапаном и корпусом, захвата установлена пружина.10, the drive element of the translational movement of the gripper is connected to a squeeze valve. In addition, a spring is installed between the squeeze valve and the housing.

На фиг. 1 .изображено устройство, общий 15 вид, на фиг. 2 - вид захвата с отжимным клапаном.FIG. 1 shows a device, a general view 15, in FIG. 2 - view of the grip with a squeeze valve.

Внутри корпуса 1 подающего устройства расположены корпус 2 захвата и привод 3 захвата (например электромагнитный), в котором имеютс сердечник 4, соединенный Inside the housing 1 of the feeding device there are located a gripping body 2 and a gripping drive 3 (for example electromagnetic), in which there are a core 4 connected

Claims

20 with a squeeze valve 5 with a central opening for the passage of the wire, and a return spring 6. In the pick-up housing 2, there are gripping elements 7 (for example, balls), a guide 8 with an opening for the feed wire. The guide 8 under the action of the spring 9 is pressed against the gripping elements 7. The spring 9 rests on the cover 10. An additional spring 11 is installed between the release valve 5 and the body 2 of the gripper. In this case, the gripping force of the spring 9 is less than the clamping force of the spring 11. The pulsed wire feed is carried out in the following way. When power is supplied to the electromagnet 3, the feed element — the core 4 and the squeeze valve 5 — move the gripping body 2 to the left in the feeding device body 1. The spring 9 is not compressed since its compressive force is greater than the frictional forces between the gripping body 2 and the feeding device body 1. The gripping elements 7, moving together with the housing 2, are wedged in the wire. After jamming the wire moves in the direction of feed. With a sharply increased resistance to wire feed, for example, with the stop gripping elements 7 and guide 8 continue to move in the direction of supply, spring 9 is compressed (in the presence of an additional spring 11, spring 11 is first compressed, causing compression of spring 9), wedging clamping elements 7 and slippage occur (rolling) them relative to the wire. The feed force is regulated by a spring 9 or an additional spring 11. When the power is removed from the electromagnet 9, the return spring 6 through the squeeze valve 5 returns to the initial position, thereby wedging the clamping elements 7 (the wire is stationary), and the elements 7 touch upon the springs 9 of the wire surface, slip (roll) over it .. The force of clamping the springs 9, and consequently, the feed force cannot be significant, as this leads to the deformation of the wire by clamping elements nivaniyu during the reverse course. In the case of positioning between the squeeze valve and the body for gripping the additional spring, the force range of the wire feed is much wider, since in this case the force of the wire feed is controlled by the amount of the additional spring clamped. The use of the proposed device provides high accuracy of wire feed, since the feed force is limited, and with a sharp increase in feed resistance, for example, when wire is fed all the way, the grip is wedged, and the wire is not warped. It is also possible to remove the wire from the grip in the direction of the reverse feed by pressing on the squeeze valve. Claim 1. Device for pulsed supply of electrode wire, containing a drive element of a translational movement of the gripper, made in the form of a spring-loaded guide of the gripping elements and a squeeze valve, characterized in that, in order to eliminate the curvature of the wire by limiting the force of its feeding, the drive the element of translational movement of the gripper is connected to the squeeze valve. 2. A device according to claim 1, characterized in that a spring is installed between the squeeze valve and the catch body. Sources of information taken into account in the examination 1. USSR author's certificate number 564933, cl. In 23 K 9/12, 1976.

2. Ilyinsky V. S. The mechanism of pulsed wire feeding in devices for welding, cutting, surfacing, metallization and soldering. “Bulletin of Machine Building, 1958, p. 84-85.

W9l 8

10 9