SU872574A1 - Induction heating unit - Google Patents

Description

(54) INSTALLATION FOR INDUCTION HEATING The invention relates to the induction heating of metal products and can be used in machine building for methodical heating of dimensional products in heat treatment units, as well as in heating plants for stamping. Installations for induction heating are known in which unloading is performed by erasing rollers mounted at the exit of the inductor fl. However, in such installations reliable unloading and the depth necessary for uniformity of heating are provided only for relatively long products. An installation for induction heating is also known, in which the unloading is carried out by special gripping bodies driven from a single drive with a product transfer mechanism and using a stop to create the necessary digging 2. However, in such installations, due to the complexity of the unloading mechanisms and control circuit, reliable work. . The major drawbacks of these installations are the increase in the size of the rearward expense of the discharge mechanisms, as well as the need to extend the heated product from the inductor to grip, i.e. products of length equal to the depth in the inductor and shorter, as well as products with a narrowing of the cross section at the end on the discharge side cannot be processed on such installations with high heating quality. Moving the product back in the opposite direction after unloading one of them creates increased wear of the guides over the entire length, the force of the return mechanism is equal to the working force, the subsequent product, although briefly, leaves the heating zone, i.e. heating quality deteriorates. Also known is an installation for inuction heating, comprising a mechanism for rewiring and unloading a product from an inductor, performed in the form of walking beams fS. The main disadvantage is the unreliability of unloading the heated product from the inductor due to the possibility of sintering it with a column of products that are located in the inductor and separating it from the column due to its own weight. The purpose of the invention is to increase the reliability of unloading and expanding technological capabilities.

The goal is achieved by the fact that the installation, containing an inductor and a walking mechanism for moving products is in the inductor, is provided with guides sequentially installed on the mechanism for moving articles with moving them along the axis of the inductor and with restrictive stops and a slide with a protrusion located between the limit stops. FIG. 1 shows schematically the proposed installation, a longitudinal section; in fig. 2 - the same, front view; in fig. 3 — Sliders, front view, CBepxyJ in FIG. 4 is a schematic representation of the positions of mechanisms and products during operation; and the initial position, b - after lifting the products, c - at the beginning of the joint movement of both carriages, d - at the end of the working stroke of the mechanisms, e - when the mechanisms are returned back and the product is reset. The installation consists of a bed 1, on which an inductor 2, fixed platform 3, a step-like movement mechanism 4 with lift limits 5, made in the form of a frame 6 mounted on the swing arms 7, and a carriage 8 with movable tracks 9 are fixed. mounted on racks 10 with rollers 11, front 12 and rear 13 with movable stops and drive 14. On the lifting frame 6 times placed carriage 15 with sliders 16 of heat-resistant steel, fixed with one end on rack 17 and sliding along movable guide, protrusion 18 .i skating rinks 19. From the side Unloading from the inductor to the installation is adjacent to the diverting body, which can be made in the form of an inclined tray or driving roller table 20. The installation works as follows, G. The parts 21 are heated into inductor 2, being on fixed directions

4. Frame 6 of the pitch mechanism moves up and to the right until it comes into contact with the lifting bar. During lifting, first of all 3. The lifting frame 6 is in the initial position at the bottom, the carriage 8 with movable tracks 9 is on the uprights 10 and the carriage 15 with sliders 16 is in the left position, the sliders 16 and the movable guides 9 do not touch the products (see Fig. 4 a. Upon receiving a heated product issuance command from the control circuit, a stepper mechanism moving over the movable guides 9 the sliders 16 touch the extreme product to be dispensed 21, remove it from the fixed guides 3, and with further lifting shifting it in the vertical and horizontal planes, separating from the rest of the Products, then the movable guides 9 contact all other products and raise them above the fixed guides 3. The displacement, when unloading the product in two directions, allows reliably tearing away from each other products with oblique or uneven ends and the products are stuck together (see Fig. 4 &). In the upward position of the lifting frame 6, the command is given to move the products, towards the unloading side - the drive of the horizontal displacement unit is activated 14, moving the carriage 15 on the rollers 19 to the right (the rollers 19 in FIG. 4 are conventionally not shown. In this case, the sliders 16 mounted on the rack 17 with one end and slid along the surface of the movable guides 9 transfer the product lying on them output from the inductor (see Fig. 4c). As the carriage 15 continues to move, the protrusion 18 fixed on it rests against the front one (the right movable support 12 of the carriage 8, which moves on the rollers 11, transfers all the products on the moving guides 9 and the slider 16 to the unloading side for a distance equal to the length of the workpiece, the heated product is completely removed from the inductor, and the next is in the inductor in the heating zone with the necessary depth (see Fig. 4 rjl) In this position, the command to lower the lifting frame 6 is given, the movable guides 9 and slider 16 goes to the lower position, and the heated product lays on the discharge conveyor 20 (conveyor 20 in Fig. 4 conventionally does not show the load-carrying surface which is a continuation of the load-carrying surface of the fixed guides 3, and is transmitted to subsequent operations, but the whole product column in the inductor lays down onto the fixed guides 3, having moved one step equal to the length of the product towards the unloading side. At the lower position of the frame 6, the command is given to return the drive of the horizontal displacement unit 14, which moves to the left first ko carriage 15 with the sliders 16, and after the contact of the protrusion 18 with the rear movable abutment I3 - and the carriage 8 with the movable guide 9 to the left polo voltage. Sometimes, there is no increased requirement for the surface, i.e. no impact delivery is optional and conveyor 20 may not be installed. In such cases, during the movement of the carriages to the left and lower position of the frame, 6, the product abuts against the fixed guides 3 and then falls down, for example in a tray {see FIG. 4 e). The mechanisms for setting the passage to the initial position and after loading onto the fixed guides of the next product (one of the known methods and heating to the desired product temperature at the output repeats. By changing the position of the displaceable stops 12 and 13, the step distance is controlled movable guides 9 when heating products of various lengths. In order to ensure minimum deviation of the sliders from the movable guides n

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Claims (3)

  ..g / J fS S (2 4 heating the ends of the sliders inside the inductor are made in the form of sleeves covering movable rails. The proposed installation provides uniform heating of the products and single-piece output by separating the products in two planes in the narpefea zone, and, therefore, cHHKetme rejects in subsequent processing: The annual economic effect from the introduction of such a plant is approximately 40-50 thousand rubles. Invention A device for induction heating, comprising an inductor and a walking mechanism for moving products in an inductor, It is different in that, in order to increase the reliability of unloading products from the inductor and expanding technological capabilities, it is equipped with guides mounted on the mechanism for moving products along the axis of the inductor with restrictive stops and a slide with a protrusion placed between the limit stops Sources of insurmation taken into account during the examination 1. K. Shamov and V. Badazhkov. Design and operation of high-frequency installations, L., Mashinostroyie 1974, p. 89 2. Authors certificate of the USSR 378426, cl. From 21D 9/70, 1973. 3.Slukhotsky A.E. and Ryskin S.E. Inducers for induction heating. Energie, 1974, p. 248, fig. 17-8. / 7 i8 $ ten sixteen f 9 in I t  .9