SU284888A1 - ALL-UNION I PATENTSH-G? X ;;: gt n; ^ __ LIBRARY j - Google Patents

Description

one

The invention relates to the field of boiler building, namely to the manufacture of heat exchange equipment, in particular, coils. For the selection of sets of pipes when winding coils, only those pipes are selected according to length, the joints of which in the manufacture of a long scourge are located outside the zone of prohibition (pipe sections subjected to bending with adjacent sections of 100-150 mm in length). To solve this problem, arithmometers are usually used, on which they calculate on the choice of pipes of various lengths. In case of unsuccessful selection, when the joint in the calculation falls into the zone of prohibition, they recalculate, using another set of pipes.

The disadvantages of arithmometers are the length of the selection process and frequent errors leading to recalculations.

The purpose of the invention is to simplify the process of assembling a lengthy scourge, taking into account the zone of the prohibition of the formation of joints. This is achieved by the fact that the device is made in the form of a body equipped with design elements with mechanisms for their installation into the starting position and a screen for reproducing segments that are proportional to the lengths of the pipes under study and parallel to each other mounted in the mobile carriage case equipped with a transparent plate with

prohibition, located perpendicular to the horizontal axis of the device at a distance corresponding to the coil step, and a slider movably mounted on a carriage having a transparent plate with sight lines placed parallel to the prohibition zones also at the distance of the coil pitch.

In addition, to create the versatility of the device, the plates of the carriage and engine are made removable.

FIG. 1 shows the described device; in fig. 2 is a diagram of the working part of the device; in fig. 3 shows the layout of the carriage plates and engine at the beginning of the selection process; FIG. 4 - the same, in the continuation of the selection.

The device consists of a body /. inside of which there are fixed axles 2 and 3. Rollers 4 and 5 are freely seated on the axes. Each roller is provided with teeth, spotted with perforation holes, made on the enveloping rollers of endless belts 6, connecting their opposite rollers 4 and 5. Each roller 4 has a spindle angle 7. One end of the screech spring with this roller, and the other with axis 2. The tape 6 is equipped with a noodle 8 placed in the slot of the rear wall of the housing /, which scales 9 are used for reference

install the tape 6. In each tape 6 made a slot, the beginning of which in the original nololsenni combined with the left edge of the screen 10, mounted in the housing 1.

In the established position, the tape b is held by a pawl 11, the tooth of which drops into the perforations of the tape. Inside the housing 1 is placed the illuminator 12, projecting on a matte screen 10 slotted ribbons 6 in the form of light strips with a common beginning at the left edge of the screen. A carriage 13 is located on the front of the hull) in the guides, carrying a transparent plate 14, which shows darkened prohibition bands. The distance between the inhibition bands and their width are made in accordance with the scale of the reduction in the image of the pipe blanks. In the carriage 13, in the guides there is an engine 15 with a transparent tablet 16 fixed on it with sight lines, the distance between which is equal to the step between the tab bars of the tablet 14.

In order to communicate universality, tablets 14 and 16 are made quick-detachable, and their number corresponds to the number of coils being processed.

The device works as follows.

The images of the lengths of the blanks are reproduced on the screen 10 in the form of light strips, for which the lead 8 moves the belt 6 before the driver is installed on the appropriate scale division 9. At the same time, the slit made in the tape 6, illuminated by the illuminator 12, will project a light strip on the screen 10, the length which is proportional to the reduced scale of the length of the workpiece. The dog // holds mite 6 in the set position than it fixes the image of other blanks. The number of blanks to be analyzed for different lengths is not limited by the described device and depends on the number of pieces of design bodies.

From the general reference point O-O (see Fig. 2), images of blanks 1, 2 ... 9 are plotted. Bands of prohibitions Si, 2, 5h and sighting lines / Zi, Pa, Pz are plotted on the respective plates, while the line Oi-Oi is the line of combining the band of prohibitions Si with the origin.

The selection process is performed in the following sequence.

With the beginning of the reference О-О (see Fig. 3), the line Oi-O) of the prohibition band Si is combined. With

In this case, the Si, Sa and 5z prohibition bands will intersect all the light segments on screen 10, visually showing which of the blanks fall at their ends into the prohibition strip and, therefore, cannot be used at the beginning of the selection. From the segments that meet the requirements, one is chosen (in this case), the sight line Oz is combined with its end, which cuts off the coil sweep line (a portion of it is shown in Fig. 3) and the LI segment with the shortage to the zone of II of the segment A The position of the line of sight "i will be established from the inhibition band Sj on the value of the missing segment D Then the carriage 13

together with Dvinsky 15 fixed on it, they are not shifted until the HI line of sight coincides with the origin O-O (see Fig. 4). In this case, the prohibition band Si is located at a distance D from the origin of reference, which is.

starting position for the selection of the next billet. The remaining prohibition bands of Si and Sa exclude from the available blanks unsuitable for C7K blanks. A second blank (JYo 4 nanrimer) is again visually determined to align the viewfinder Pz with its end, thereby transferring the missing segment beyond the OO line (as in Fig. 3). Further, repeating the summation of segments with each other, the selection of the whole set of pipe-stock is carried out.

Subject invention

Claims (2)

1. A device for the selection of pipes in the manufacture of coils, characterized in that In order to simplify the process of assembling a long scourge, taking into account the zone of the prohibition of the formation of joints, it is made in the form of a cornus, equipped with design organs with mechanisms for installing them in the original version and with a screen for reproducing segments, proportional to the lengths of the pipes under study and parallel to each other, mounted on the body of the movable carriage equipped with a transparent tablet with zones of prohibition, perpendicular to the horizontal axis of the device at a distance corresponding to the coil pitch and movement and slidably mounted on the carriage provided with a transparent plate with a target plate lines located parallel to the prohibition zones also at the distance of the coil pitch. 2. The device according to claim 1, characterized in that, in order to create universality, the carriage and engine tablets are removable. m Sj