SU1570949A1 - Apparatus for welding the ends of polymeric binding tape - Google Patents

Abstract

The invention relates to the packaging of products and can be used in the heads of binding machines operating on polymeric banding tapes. The purpose of the invention is to improve the performance of the device. The device includes a housing 9, a separator 14, tape clips, a clamp, scissors, and a heater. The heater includes a transformer with magnetic core 7, primary and secondary windings 8 and 12. On the slider 10, secondary winding 12 and heating plate 13 are fixed. Slider 10 is mounted in guides 11 and rigidly connected to separator 14. 3 sludge.

Description

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The invention relates to the packaging of products and can be used in the heads of binding machines operating on polymeric banding tapes.

The aim of the invention is to improve the performance of the device.

FIG. 1 shows the device, a general view; in fig. 2 - the same, top view; in fig. 3 is a section A-A in FIG. 2

The device for welding the ends of the polymer wrapping tape using the thermal-contact method includes tape guiding channels 1, a clip 2 of the tape's end, a clip of 3 welded sections of the tape, a clip 4 of the tape, scissors 5 and a heater 6.

The heater 6 includes a step-down transformer containing a magnetic conductor 7 and a primary winding 8 rigidly mounted on the device case 9, and a slider 10 having a possibility of movement in guides 11 located on the case 9.

A secondary winding 12 of a transformer and a heating plate 13, made of an alloy with high electrical resistance, such as nichrome, are fixed on the slider 10.

The belt guiding channels 1 are provided in a separator 14 rigidly connected to the slider 10 of the heater 6.

All mechanisms are driven by a camshaft 15.

The device works as follows.

A wrapping tape designed for tying the product to be packaged is fed along guide channels 1 through scissors 5 and divider 14 into clamping zone 4. Next, the tape forms a ring that surrounds the product, the front end of the tape is fed through clamp 2 along the top of the tape guide channels 1 to the clamping area 4.

A current is supplied to the primary winding 8 of the step-down transformer of the heater 6, the heating plate 13 connected to the secondary winding 12 is heated to the operating temperature corresponding to the melting temperature of the tape (180 ° C). The separator 14 is removed from the weld zone, and since it is rigidly connected to the slider 10 of the heater 6, the plate 13 is simultaneously heated together with the secondary winding

10 is moved by the magnitude of the working stroke-and is inserted briefly between the ends of the banding tape. Sections of the ends of the tape are heated and after the withdrawal of the plate 13 are connected by a clamp 3. A connection of the ends of the tape occurs.

Scissors 5 cut off the excess tape. The mechanisms of the device are driven back to their original position, freeing the welded ends of the tape. The device is ready for the next cycle.

2o The drive transmits the movement to each element of the device sequentially, in accordance with the specified cycle.

The advantage of the proposed device in comparison with the known one is that, due to the rigid connection of the divider and the heater slider, the movement of two different nodes is combined. This leads to a reduction in the welding cycle and, consequently, to an increase in the productivity of the device.

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Claims (3)

Invention Formula A device for welding the ends of the polymer wrapping tape, comprising a housing, a separator, tape clips, a clamp, scissors and a heater, including a transformer, the magnetic core and the primary winding of which are mounted on the housing, and a slide with a heating plate fixed on it and the secondary winding of the transformer mounted on the body During the reverse movement of the ribbon, its tape 40 is movable relative to the rare end is held by the clip 2. The ring covering the product is reduced tightly around it. After that, the clamp 4 compresses the ends of the tape, fixing them. A magnetic conductor, characterized in that, in order to increase productivity, the separator is rigidly connected to the heater slider. A current is supplied to the primary winding 8 of the step-down transformer of the heater 6, the heating plate 13 connected to the secondary winding 12 is heated to a working temperature corresponding to the melting temperature of the tape (180 ° C). The separator 14 is removed from the weld zone, and since it is rigidly connected to the slider 10 of the heater 6, the plate 13 is simultaneously heated together with the secondary winding moves by the magnitude of the working stroke and is inserted briefly between the ends of the banding tape. Sections of the ends of the tape are heated and after the withdrawal of the plate 13 are connected by a clamp 3. There is a connection of the ends of the tape. Scissors 5 cut off the excess tape. The mechanisms of the device are driven back to their original position, freeing the welded ends of the tape. The device is ready for the next cycle. o The drive transmits the movement to each element of the device sequentially, in accordance with the specified cycle. The advantage of the proposed device in comparison with the known one is that, due to the rigid connection of the size of the divider and the heater slider, the movement of two different nodes is combined. This leads to a reduction in the welding cycle and, consequently, to an increase in the productivity of the device. thirty 35 Invention Formula A device for welding the ends of the polymer wrapping tape, comprising a housing, a separator, tape clips, a clamp, scissors and a heater, including a transformer, the magnetic core and the primary winding of which are mounted on the housing, and a slide with a heating plate fixed on it and the secondary winding of the transformer mounted on the body  40 movable relative to A magnetic conductor, characterized in that, in order to increase productivity, the separator is rigidly connected to the heater slider. 1