SU1042546A1 - Device for wrapping flat articles - Google Patents

Abstract

A DEVICE FOR DEPLOYING PLANE PRELOPS, containing a material feed mechanism, the invention mechanism relates to the electrotechnical industry and may include. be used for packing electrodes of acumulators in a separating material. A device is known for fixing separation at the electrodes of a chemical current source containing me. The pschcha khanizm of the material, the mechanism for moving an object with gripping elements, and a welding unit with a locking device by an electrocautery. A disadvantage of this device is the complexity of its readjustment to different sizes of products. The closest in technical essence and achievable result was a device for wrapping flat objects, which contains a material feeding mechanism, a mechanism for moving an object from the direction of a yaprshi. moving the object with guides, anvil and gripping elements, a node. welding with clamps, an electrocautery made of wire tensioned by rollers of the tension mechanism and wound on coils that are mounted on the axles, and a drive for moving the Lever,. characterized in that, in order to reduce defects, the axes of the coils are made stationary, the tension mechanism rollers are fixed on two levers, one of which is connected to the movement of the electrocautery, and the other is provided with a spring. (L with an emphasis and grip elements, a welding unit with clamps, an electric blade made of wire, tensioned by roller tension mechanism and wound on coils that are fixed on axles, and a movement drive; electric blade. However, this device does not provide constant tension on the wire during the whole working stroke of an electron-shear 0. When an electron / ma moves through the separating material, as a result of a change in the thermal mode, the tension of the wire can be loosened and local touches along the edges of the clamps, which leads to marriage, as in the places of contact, the material is cut without a seam formation. The purpose of the invention is to reduce the scrap. This is achieved by the fact that in the device for wrapping flat items

Description

the top, containing the material feed mechanism, the mechanism for moving the object with the guide, the stop and the gripping elements, the welding unit with the latches, the electrocautery of the wire tensioned by the rollers of the tension mechanism and wound on the catupzhi, which are mounted on the axes, and The drive of the electric motor, according to the invention, the axis of the coils is made stationary, the rollers of the tension mechanism are fixed on two levers, one of which is connected with the drive of the movement of the electrocautery, and the other is equipped with a spring. The drawing shows the kinematic scheme of the proposed device. The device contains an electrocautery 1, in the form of a wire of nichrome with a diameter of 0.6-0.8 mm, wound on coils 2.3 turns to a coil in a single layer. The coils 2,3 are mounted on fixed axles, fixed on the frame on both sides of the cut strips of separadion material. Close-cut necks also on fixed axles are mounted levers 4 and 5, at the ends of which rollers 6 and 7 are installed. Lever 6 is pivotally connected to the pusher 8, making a vertical reciprocating movement from the main drive cam. The lever 5 is connected to the spring 9, which lifts it to the edge of its upper position. The coil 3 soy is dinen with the ratchet and the dog, stepping to rewind the wire from the coil 2 to the coil 3 under the action of the pushers 10 from the main drive cam. Coils 2 and 3 are interchangeable. The device works as follows. In the lower position of pin-iara 4, the coil 2 is installed, the end of the wire is passed through the rollers 6,7 and fixed on the coil 3. Twist the coil 3, pull the wire to a position close to horizontal (lever 5 comes to stop). When the lever 4 is moved by the pusher 8 upward, the horizontal portion of the wire (electric knife 1) interleaves also upwards, remaining in the tensioned state by the action of spring 9. When the electric current source is switched between the rollers 6.7, current passes through the electric knife 1 temperature Crossing the layers of packaging material 11, the heated electron-beam 1 cuts them and welds in the places of the cut on both sides. During the reverse movement, the pusher 8 the electrocautery 1 moves down, remaining also in the taut state due to the spring 9. At the end of the stroke (the lever 5 reaches the stop), the pusher 10 starts moving upwards, which winds the wire from the coil 2 at a predetermined step, after which the cycle of the working movement of the power arm is repeated. The systematic rewinding of the wire during each cycle at a given step allows it to be cleared from the arrays. The proposed device for wrapping flat objects makes it possible to significantly improve the quality of welds and reduce scrap in comparison with the known one.

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Claims (1)

DEVICE FOR WRAPPING PLANE OBJECTS, comprising a material feeding mechanism, an object moving mechanism with guides ,, a stop and gripping elements, a unit “. welding with clamps, an electron from a wire, pulled by the rollers of the tension mechanism and wound on coils that are mounted on the axes, and a drive for moving the electric knife,. characterized in that, in order to reduce the marriage, the axis of the coils are fixed, the rollers of the tension mechanism are mounted on two levers, one of which is connected to the drive for moving the electric knife, and the other is equipped with a spring.