SU1725272A1 - Device for manufacturing wound circular articles - Google Patents

Abstract

Use: manufacturing techniques of ring products from ferrite ribbons with improvement of their quality by bonding layers. SUMMARY OF THE INVENTION: A heater in the form of an IR emitter is installed over the tape guiding elements, the surface of the roller to which the winding is performed is made of an elastic heat-conducting material, and the pressure roller is hollow and filled with working medium with the possibility of its heating. In order to slit the tape, the device is equipped with a disk mechanism. 2 hp f-ly, 3 ill.

Description

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The invention relates to equipment for the manufacture of ring products from ferrite tape by winding it into a roll and longitudinally cutting on blanks.

A device for the manufacture of tubular paper products is known, which comprises a winding and a pressure roller, a tape trimming mechanism and a nozzle mechanism for pressing the web with airflow to the winding shaft.

The presence of glue application mechanisms makes it possible to use it only for the manufacture of tubular paper products.

A known machine for the manufacture of pipes from a paper web of rolls includes a roll, an adhesive mechanism, a rotor with winding shafts, a refueling mechanism comprising a pressure roller, a cutting mechanism and a pipe removal mechanism.

The machine provides high-quality high-quality winding paper

pipes, however, it is impossible to use it for the manufacture of cylindrical products from a thin ferrite tape, since in this case the glueless principle of connecting adjacent turns of the product is necessary. The presence of the adhesive layer affects the quality of the manufactured products.

The closest technical solution to the present invention is a device for winding a tape on a mandrel, comprising guide elements for a belt, a roller winding mechanism with a drive, a pressure roller, a mechanism for transverse cutting of the belt and billet, limit switches and a control system.

A disadvantage of the known device is that it serves to wind the tape on the mandrel and does not provide diffusion bonding of the layers during the winding process.

—yu ate yu yu

The purpose of the invention is to improve the quality of the product by adhering the layers.

The essence of the invention is that a device comprising guide elements for a belt, a roller winding mechanism with a drive, a pressure roller, mechanisms for transverse cutting of the belt and removal of workpieces, limit switches and a control system, additionally introduced an infrared radiator. mounted above the belt guides, the surface of the pressure roller is made of their elastic heat-conducting material, the winding roller is made of keyhole, filled with working medium with the possibility of its heating.

In addition, the device is equipped with a lever that can be rotated, with the pressure roller mounted on one of its ends, and the other connected to the limit switch. The mechanism for removal of articles is made in the form of a screw pair mounted in the housing, rigidly connected with the winding roller, and an emphasis fixed on the housing.

The device further comprises a disk slitting mechanism for tape, which allows for improved productivity.

The known technology for the production of ferrite magnets involves the following production stages: powder preparation, pressing (cold or hot), sintering, magnetization to the required characteristics.

In the proposed device, the essence of the technology for producing ferrite products consists in the fact that a thin broad tape with a thickness of 150-200 µm is pre-rolled from the powder, then it heats up to 80 ° C and with a specified pressure of 3-5 kg / cm is wound without glue on the mandrel. In order to increase labor productivity and ensure trouble-free winding of the tape, a longitudinal section cutting section was introduced before the winding, which allows refusing the operation of final cutting of the cylindrical billet into smaller parts.

Cutting the tape before winding has the advantage that it is easier to cut a thin tape with a disk tool than a ring billet of large diameter, using less power, eliminating the appearance of burrs.

In addition, new nodes are being introduced - heating the ferrite tape from above using an infrared emitter on one side and

preheat it on the other hand using a pressure roller. The introduction of double-sided heating combined with pressure during winding contributes to reliable diffusion bonding of the tape layers.

An additional unit for removing the blanks after winding has also been introduced. The pinch roller is mounted on the end of the lever, while its other end interacts with the limit switch, which allows winding the tape on the winding roller to a predetermined diameter of the ring. .

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

The device contains a roll 1 installed along the technological process with guides 2 for ferrite tape 3, a winding roller mechanism 4 consisting of a winding roller 5 connected to the drive and a pressure roller 6 made hollow and filled inside by the working medium — coolant 7 associated with the heating system 8 of this medium and covered with an elastic thermally conductive material 9. The roller 6 is connected to the drive shaft 10.

In addition, the device has a transverse cutting mechanism 11 (Fig. 3) of the tape 3, a mechanism 12 for removing the blanks 13, made in the form of a screw pair 15 installed in the housing 14, rigidly connected to the winding roller 5, and an emphasis 16 mounted on the housing 14, control system 17; heater in the form of an infrared emitter 18 mounted above the guides 2 for the ferrite tape 3.

The pressure roller 6 is mounted on the end of the lever arm 19 (FIG. 3) with the possibility of swing, weights 20 are installed on the other lever arm to adjust the pressing force of the tape 3. The other end of the lever 19 is connected through the cam 21 to the limit switch 22, a mechanism is installed behind the winding unit 23 slitting the tape during winding.

The device works as follows.

The control system 17 includes a heating unit for the ferrite tape 3 — an IR radiator 18 installed over the supercores. When the tape is heated to 80 ° C, the drive 10 is turned on, with rollers 5 and 6, the ferrite tape is pulled out from roll 1, passes at a speed of 50 mm / s along guide 2 and enters the winding mechanism 4 on the winding roll 5. The tape is pressed by pressure roller 6 , filled with the working medium - coolant 7, connected with the heating system 8 of this medium and coated with an elastic thermally conductive material 9 outside, heating the outer surface of the pressure roller 6 to 80 ° C, which supplies heat to the bottom surface of the ferrite tape. For the winding unit 4, a mechanism 23 for longitudinal cutting of the tape into strips is installed. The process of winding and longitudinal cutting of ferrite tape at 80 ° C.

When a predetermined size of the billet 13 is reached, the other end of the lever 19 with weights 20, equipped with a cam 21 interacting with the limit switch 22, turns off the MK-emitter 18, and the transverse cutting mechanism 11 cuts the ribbon. The actuator 10 rotating the rollers 5 and 6 is turned off a little later after the final winding and longitudinal cutting of the tape. The belt slitting mechanism 23 is retracted from the winding zone, the pressure roller 6 is lowered to its original position.

The removal of the workpieces 13 is performed by the device 12 removal, made in the form installed in the housing 14 of the screw pair

15, rigidly connected to the winding roller 5, and mounted on the housing 14 of the stop

16, while the screw rigidly connected to the winding roller 5 is moved along the horizontal axis, the workpiece 13, abutted against the stop 16, is removed from the roller 5. This completes the cycle.

The proposed device allows to realize a new technological process for the production of magnets from a ferrite tape. The diameter of the ring magnets is 37 mm, the height is 15 mm. For one installation it is possible to get two products. To ensure the diffusion bonding of the layers, an infrared emitter is used, heating the tape from above to 70 ° C and heating the shaft, the surface of which is covered with a layer of rubber, from the bottom to the same temperature.

The feed rate of the ferrite tape in the device ranges from 10 to 100 mm / s. The proposed device allows increasing labor productivity by no less than 3 times in comparison with the known methods of forming anisotropic products (wet and dry pressing in a magnetic field). This is explained by the fact that

The known methods have a physical limitation of the textural magnetic method, and in the proposed device, the texture in the product is determined by the mechanical effect on the ferrite tape, which allows up to 10 products to be produced simultaneously.

Claims (3)

1.Device for making twisted ring products, comprising guide elements for a belt, a roller winding mechanism with an actuator, a winding diameter measurement mechanism, a belt transverse cutting mechanism and removing blanks and a mechanism for controlling the mechanisms, characterized in that, in order to improve the quality of the product by adhering its layers, it is equipped with a heater in the form of an IR emitter installed over the belt guiding elements, the surface of the pressure roller of the roller mechanism is made of elastic heat-conducting material, while the pressure roller is hollow and filled with a working medium with the possibility of its heating. 2. The device according to claim 1, characterized in that the mechanism for removal of products is made in the form of a screw pair installed in the housing, rigidly connected to the winding roller, and emphasis mounted on the housing. 3. The device according to paragraphs. 1 and 2, differing so that, in order to improve performance, it is equipped with a disk slitting mechanism.