SU1239760A1 - Device for manufacturing fusible element of fuses - Google Patents

Abstract

The invention relates to electrical engineering, in particular to low-voltage instrumentation, and relates to devices for making fuses. The aim of the invention is to provide the possibility of manufacturing fusible elements of complex shape. For this purpose, a device is used which consists of a roll feeder 1 carrying out a continuous supply of a metal strip (MP}) 2, intended for the manufacture of fusible elements, a press 3 for intermittently perforating the holes in MP 2, a loop block 4, into which 2 and from which the MP 2 continuously exits. In addition, the device comprises guide rollers 5, which supply MPs 2 for further processing, a roll forming machine 6, which bends the molding, scissors 7, which carry out KU MP with perforations and bends on individual elements of the required size, system 9 for driving the roll feeder and system 14 for driving the roll forming mill 6. The roll forming mill contains horizontal 10, 11 and vertical 12, 13 rolls of rollers, rotated by Systems 14. Men. The relative position of the rollers, you can change the shape and number of bends in MP 2. 2 Il. with y (L Fig.

Description

The invention relates to electrostatic, to the field of low-voltage apparatus, namely to fuses.

The purpose of the invention is to provide the possibility of manufacturing fusible elements of complex shape.

Fig. 1 shows a block diagram of a device for manufacturing fuse elements; in FIG. 2, a bend at a certain angle in each pair of rollers of the entire profile (a) and part of the profile (S).

Device for making fuse elements

IT from a roll feeder 1, continuously feeding the metal strip 2 to make fusible elements from it, a press 3 with a die or other tool; viH intermittently perforating the holes in the metal tape 2 to obtain necks (reduced cross sections) of the required shape in the required amount loop loop 4, which is intermittently supplied with a metal tape 2 with perforations and from which this tape goes continuously, directing (setting) the rollers 5, which supply the metal strip 2 dp of post-processing, profile bending sian 6, forming bends in parts of the full cross section of the fusible element, scissors 7, cutting the metal tape with per4 and x bends into individual elements of the required size, 8 dp storage of finished elements , system 9 for driving roll feeder 1 and system 10 for driving roll forming mill 6.

The roll feeder 1 is a conventional device used by dp of feeding tape material (usually wound into a coil) for subsequent automatic processing. Its main part is the shaft, on which the coil (or roll) of the metal strip is worn and which is driven by a separate drive system 9. As system 9, you can use electric, hydraulic, pneumatic and other types of drive. In addition, the proposed device can easily be combined with the technological line.

rolling a metal strip in the process of cooking it. In this case, in some embodiments, devices 1 and 9 can be excluded and the tape 2 can be directly fed into the press 3 from a rolling installation (not shown). Press 3 with a set of die tools or other tools is used to perforate holes in the metal tape 2 in order to obtain places of reduced section. A corresponding set of tools provides holes (and therefore necks).

required form and in the required amount. Although the stamping in the press 3 is carried out intermittently, however, through the use of the loop unit 4, a continuous feed from this block is provided for the belt to be processed further.

I

The loopback unit 4 is the simplest device for forming a constant stock or accumulating metal tape 2, which allows you to go from intermittent punching in the press 3 to reliable continuous shaping of the tape at subsequent nodes of the device. The guide rollers 5 provide for transporting and guiding the belt 2 to the roll forming mill 6. The roll forming mill 6 as basic units comprises horizontal 10 and 11 and vertical 12 and 13 pairs of rollers, rotated with the help of drive system 14. The drive may be electric, hydraulic, pneumatic or other appropriate type. Work rolls 10-13 can be solid or collapsible. In the latter case, they consist, for example, of rollers, profile washers and sleeves, which are dressed on these rollers and fixed on them, for example, with the help of nuts. In this case, regardless of the design, the working rollers 10-13 have the corresponding profiles necessary for forming 6 bends of wide parts of fusible elements of a given shape in a roll forming mill. The process of forming the bends of the tape consists in successive bending of the tape material to the required configuration of the finished element in the shaped rollers of the mill 6. In each pair of rollers, individual sections of the tape are bend at the angle (15-45),

which makes it possible, using rollers of an appropriate number and profile, arranged vertically and horizontally, to obtain a given shape of the bending of the wide part of the fusible element i at relatively small mechanical stresses arising during such cold deformation. The shape and number of bends of the fusible elements can be changed by changing the relative position of the work rolls 10-13 or replacing them. The simplicity of the design, high productivity of the profile; bending mill (at the speed of form | 5 finished elements,

the formations of leites in this mill in the order of 10–30 m / min), and the possibility of obtaining bends in a wide part of the fusible elements of practically any shape required for production, make the proposed device acceptable for manufacturing — high-speed fuses. After the bends of the corresponding configuration are formed in the tape, the tape enters the scissors 7, in which 20

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This is due to the fact that the possibilities of the twisted elements are complicated by a profile-bending block, setting scissors, and the space between the giving rollers and the entrance to the loop unit is separated from the press for steps and the entrance to

cutting the tape in length and / or width to produce fusible elements of predetermined dimensions, which are stored on the rack 8.

Claims (1)

Invention Formula A device for making fuse elements comprising a roll feeder for feeding a metal strip for making fusible elements, a press for punching holes in the metal tape and a rack for storing finished items about This is so that, in order to ensure the possibility of manufacturing fusible elements of complex shape, it is equipped with a roll bending mill, a loopback block, setting rollers and scissors, the roll forming mill being located between the output of the setting rollers and the entrance to shears, and a loopback unit is located between the exit of the press for punching holes and the entrance to the setting rollers. / 21 Z2 Editor N. Bobkova Compiled by S. Gordon Tehred N. Bonkalo Cor Pod 3401/51 Circulation 643 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Z-ZZ, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Design, 4, Proofreader A.Zimokosov; Subscription