SU114615A2 - Die-free pipe unloading machine - Google Patents

Description

In auth. No. 104402 A method has been described for upsetting pipes without dies using an upsetting mechanism acting in the direction of the axis of the pipe at the same time as upsetting. The essence of this method lies in the fact that heating is carried out on a localized small portion of the length of the pipe, moving the heating zone at a speed that corresponds to speed,. the precipitating mechanism, and to obtain different degrees of thickening of the pipe wall, the ratio of the speeds of movement of the heating element and the motion of the precipitating mechanism is changed.

In the proposed mask, the implementation of this method is achieved by using an annular inductor moving along the pipe axis to heat the localized pipe, and to achieve an inductor moving speed corresponding to the draft and the pipe wall thickening, clamping the pipe and the slider carrying it down by means of a toothed rack. Guitars with interchangeable brushes and feed boxes are kinematically connected to a ring inductor. This allows the landing process to be carried out with a constant upsetting effort and at a constant upsetting speed.

FIG. 1 shows a side view of the maschiny in longitudinal section; in fig. 2 - view: from above; on .fig. 3, - a section on AA on f-ig. 2

The machine consists of the following main units: bed /, rotating stop 2 with sliding mandrel 3, slide 4 with a rear mechanism, pressure device 5 (pneumatic-hydraulic cylinder), transformer with inductor 6, table 7 with inductor feed box, rotation drive the mandrel 8, drive rotation of the pipe 9, lunettes 10 with the mechanism of axial movement of the pipe.

The order of operation of individual components and mechanisms is as follows.

First, the clamping device slider 4 is retracted into the right rear position and the upper part of the lunettes 10 opens. The pneumatic cylinders 5 embedded in the rotating cage //, wedge

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12, the clamping devices are guided along the forward guides, thereby increasing the size of the light between the wedges, thus ensuring a free passage of the tube. By means of a transporting device (not shown in the drawing), the pipe is fed and laid on the feed rollers of the supports 10. The rollers feed the pipe forward through the hole formed by the wedges 12, locate the rotating mandrel 3 having the pointed end and rest against the replaceable ring 13 of the rotating support 2 In this case, the wedge 12, / moving nHeBMaTM4eckwMH cylinders right, approach and surround the pipe around the circumference of the string and. The pipe is then clamped in the lunettes 10, and the electric drives 8 and 9 are driven into, the rotation of the mandrel 3 and the sleeve 1 with the pipe clamped. Electric drives work synchronously with each other. High pressure fluid is supplied to cylinder 5 and, at the same time, voltage is applied to inductor 6. As soon as a narrow, localized section of pipe is heated, a landing will begin under the effect of precipitating force. But since the gear box 16 and the slider 4 are connected to each other through the rack rail 14 mounted on the slider 4 and the guitar 15, the inductor feeds along the pipe simultaneously with the pipe landing. The thickness of the planted wall is determined by the ratio between the speed of movement of the inductor and the speed of movement of the slide (the speed of the actual precipitation). This attitude is established by means of the interchangeable gears of the guitar, ry 15.

Due to the kinematic connection of the slider with the inductor and the presence of an independent-driven feed box, the landing process on the machine is carried out both at a constant speed and a constant settling force.

By varying the speed of movement of the inductor, at a constant settling rate, thickening of variable cross section is planted.

After .T10GO as. The landing will be generated, the voltage is removed from the inductor, the wedge 12 is depressed, and through the hydraulic cylinders the housing / 7 of the mandrel bearings is fed to the left; the mandrel 3 is thereby withdrawn from the pipe. Then the covers of the lunettes 10 are opened, and the rollers dispense a pipe from the clamping device of the slide; then the pipe is caught by the conveyors (not shown in the drawing) and is removed in the required direction. After that, the compressed air slider moves to the extreme right position, and the inductor moves to the left. By means of hydraulic cylinders, the mandrel is pushed forward and the stacker machine is accepted to receive the next pipe.

Other sections are also planted by car. In this case, the annular inductor and clamping cams are replaced by the shape corresponding to the profile to be planted. The rotation drive is then disconnected.

Subject invention

Claims (2)

1.Mashchina for disembarking pipes without dies, in accordance with the method of disembarkation, according to the main author. St. No. 104402, characterized in that, in order to obtain intense heating in a limited portion of the pipe, a ring inductor is used, having a relative displacement during the drying process. 2. The machine according to claim 1, so that, in order to obtain the speed of movement of the inductor, the corresponding precipitation speed and the degree of thickening of the pipe wall, clamping the pipe and carrying out its slump through the rack, guitar with interchangeable gears and feed boxes are kinematically connected with a ring inductor, which heats the pipe at the point where it is deposited.