SU617127A1 - Tube-beading method - Google Patents

Description

a simple kinematic scheme of the automaton, high productivity and the possibility of providing a high degree of automation of the process of flaring with simple means.

The machine for expanding thin-walled tubes contains rotating holders, a flare tool made in the form of conical spikes inserted into the tube from two sides and radially mounted in the holders.

This machine has the following disadvantages. The tube is fed to the flaring position by the tool itself, and the force that informs the tube of translational movement deforms it unnecessarily, thus making the flare quality worse. Due to the wear of the mechanism of engagement of the parallel shafts, the coaxiality of the opposing tools can be disturbed, which will lead to uneven and poor-quality flaring of the tubes.

The known structure does not allow flaring of the assembled package of pipes with a complex pattern, which limits the technological capabilities of the device.

The aim of the invention is to create an installation with the ability to flare tubes in tube plates.

The goal is achieved by the fact that the holders are provided with zpors located at their periphery at the same distance from the spars, and the feeder is made in the form of a tube plate that interacts with the end face with the stops, and is equipped with a movement drive in a direction perpendicular to the plane passing through the axes of the holders , axes are eccentric.

FIG. 1 shows a side view of the device; in fig. 2 is a view A of FIG. one.

The device for flaring pipes in tube plates is a frame 1 with two parallel axes 2 and 3 placed on it, on which holders 4 and 5 with tools 6 are fixed.

Tool 6 in the holders 4 and 5 is set so that the tool pitch when scanning the installation positions of the tool on the plane is equal to the pitch of flared tubes in the package. The assembled package of pipes 7 is fixed in the carriage 8, which can perform a reciprocating motion, communicated to it by the movement mechanism 9, the role of which can be performed, for example, by a hydraulic cylinder. The combination of the carriage 8 with the movement mechanism 9 forms a feeder. The supports 10 and 11 are mounted on the holders 4 and 5. The axes 2 and 3 are equipped with eccentric steps m and n.

The package of pipes 7 installed and secured in the carriage 8 by the horizontal movement mechanism 9 communicates in translation towards the holders 4 and 5. In the process of feeding, the ends

tube plates come into contact with stops 10 and 11 and begin to turn holders 4 and 5. Stop 10 in the holder 4 is set so that the arc distance from the edge of the stop 10 to the axis of the first tool in the holder 4 is equal to the distance from the end of the tube plate to axes of the first flared pipe. Similarly installed and the emphasis 11 in the holder 5. In the process

the reversing tools 6 begin to enter the pipes, and a rigid kinematic connection of the holders 4 and 5 n of the feeder consisting of the carriage 8 and the horizontal movement mechanism 9 is established.

(Fig. 2). Upon further rotation of the holders 4 and 5 on the axes x 2 and 3, the flaring is alternately carried out simultaneously on both sides of all the pipes.

At the end of the flaring mechanism 9

the horizontal movement returns to its original position. During the return stroke, the flared pipe ends are calibrated and the entire system is returned to its original state.

For the flaring of packages of tubes that differ from each other in the length of the tubes, and for adjusting the amount of deformation of the ends of the tubes, the device provides for adjustment of the center distance of the holders.

To change the distance, axes 2 and 3 are rotated in frame 1 to the desired angle. The holders 4 and 5, mounted on eccentric steps like axles 2 and 3, will move in the radial direction, changing the center distance. At the desired position, axles 2 and 3 are fixed.

The use of this invention provides high quality and high quality.

productivity of the process of expanding a package of pipes having any pattern of pipe arrangement.

In the enterprise, the device according to the invention is implemented under large-scale production conditions for expanding a package of tubes of heat exchange units (refrigerators) of screw compressor stations.

Implementing the device allows you to go

from successive flaring of each tube in a percussive way to simultaneous flaring of the whole package of pipes in a single pass, which will dramatically increase labor productivity and production culture when

high quality products. According to the calculation carried out on the enterprise, the effect expected from the introduction of the claimed device is more than 30 thousand rubles. in year.

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Claims (3)

1. A device for expanding tubes containing two cores mounted on parallel axes x: hawks with a flare tool in the form of conical spikes and a feeder for accommodating pipes, characterized in that, in order to enable pipe expansion in tube plates, each holder is provided with an abutment located on its periphery, and the feeder is in the form of a tube plate with an end-face interacting with stops, and is provided with a movement drive in the direction perpendicular straight to the plane passing through the axes of the holders. 2, the apparatus according to claim 1, characterized in that the axes are made eccentric. Sources of information taken into account in the examination 1. USSR author's certificate number 148783, cl. In 21D 39/06, 1961. 2. USSR author's certificate number 278621, cl. In 21D 39/06, 1968. 3. USSR author's certificate number 150090, cl. In 21D 39/06, 1961.