SU1563790A1 - Machine for scraping tube ends - Google Patents

Abstract

This invention relates to stripping pipe ends. The purpose of the invention is to increase productivity and expand technological capabilities. The machine includes a rotation drive and a clamping mechanism for the cleaned pipes, a cleaning tool drive, a cleaning tool clamping mechanism for the pipe, and a sweeper assembly swing mechanism. The machine works as follows. The cleaned tube is fed by the roller table to the stop and then laid on the support rollers of the machine. Then the pressure roller 10 clamps the pipe. Thereafter, the platform 14 with the plate 18 and the rotating brush drum is lowered by a predetermined amount, while the hinge 29 fixed on the plate 18 is moved by the same amount in the slot of the link 28, i.e. the brush drum is fed to the pipe being cleaned with the required overlap a. The cleaning process begins. At the end of the cleaning, the power drive of the swing plate 18 is actuated, as a result, the slide moves in the opposite direction, carries away the pull 29, and the plate 18 rotates in the hinge and the brush drum moves to the position that ensures cleaning of the internal burrs. When the cleaning is completed, the platform 14 and the pressure roller 10 return to their original position, and the pipe stops. 5 il.

Description

ate

about

WITH

one

with

The machine works as follows. The cleaned tube is fed by the roller table to the stop and then laid on the support rollers of the machine. Then the pressure roller 10 clamps the pipe. After that, the platform 14 with the plate 18 and the rotating brush drum is lowered by a predetermined amount, while the hinge 29 fixed on the plate 18 is moved by the same amount in the slot of the wings 28, i.e. the brush drum is brought to the cleaned pipe with the required overlap a. The cleaning process begins. At the end of the cleaning, the power drive of the swing plate 18 is actuated, as a result, the link moves in the opposite direction,

29, and the plate 18 is rotated in the hinge, and the counting drum is moved to the position that ensures the cleaning of the internal burrs. At the end of the cleaning platform 14 and the pressure roller 10

returns to their original position, and the pipe stops. 5 il.

The invention relates to stripping the ends of pipes.

The aim of the invention is to increase productivity and expand technological capabilities.

FIG. I shows the machine, front view; in fig. 2 is the same, view A in FIG. I; in fig. 3 shows a section BB in FIG. I; in fig. 4 shows a section B-B in FIG. one; in fig. 5 is a diagram of the stripping of the pipe end.

In the drawings, the following symbols are accepted: dv «H, dcp, imax - respectively, the minimum, average and maximum outer diameters of a pipe of a given size range of the pipes being processed; GS- the outer radius of the brush drum; a is the amount of overlap of the pipe end by the wires of the brush drum; x, y are the working positions of the brush drum; honeycomb - angular velocity of rotation of the pipe; w is the angular velocity of rotation of the brush drum; I, II, III, IV - forming the outer and inner cylindrical surfaces of the pipe of the minimum and maximum dimensions, respectively, subjected to cleaning; I is the adjustable stroke of the brush drum to the pipe end; h - stroke of the pneumatic cylinder of the drive of the swing of the brush drum; L is the distance from the axis of the bearing rod to the axis of the bearing assembly; / is the distance from the plane of the brush drum to the axis of the bearing assembly.

The machine bed includes the base 1, on which the racks 2 and 3 are installed. On the rack 2, the support rollers 4 and 5 are mounted in a common housing, and the roller 5 is kinematically connected by means of a chain gear 6 to a gearmotor 7 mounted on the base 1. On this In the same rack, over the supporting rollers, an air cylinder 8 is mounted, on the rod of which the pressure roller 10 is fixed in the housing 9. The pressure rod 10 rotates the pressure roller 10 relative to the axis of the pneumatic cylinder 8 mounted on the housing 9 so that it can move in sleeve 1 2, fixed to the housing of the said pneumatic cylinder (Figs. 1, 2).

A pneumatic cylinder 13 is mounted on a stand 2, on the rod of which a platform 14 is fixed in the lower part. It is made in the form of a slide mounted for movement and guides 15 mounted on a stand 3 (Fig. 3).

An electric motor 16, on whose shaft the brush drum 17 is mounted, is mounted on a plate 18 mounted in a bearing assembly 19. The bearing assembly body 20 is made in the form of crackers with flat side surfaces and mounted in a form 14 in the form of translational movement along the axis of the bearing assembly.

To adjust the overlap of the brush drum relative to the end of the pipe 21 placed on the support rollers

0 depending on the wear of the brush (fig. 1) serves as a handle 22 (fig. 3). It is mounted on a screw 23 mounted rotatably in a glass 24 mounted on a platform 14. The screw interacts with a nut 25 mounted in a housing 20 of a bearing assembly 19. To limit the axial movement of the screw, a stopper 26 is installed. on the rod of which the rocker 28 is fastened. On the plate 18 there is fastened a ha ha 29, which is kinematically connected to the rocker 28 by means of a slot made in it. The rotation of the scenes relative to the pneumatic cylinder 27 is prevented by two guide rods 30, mounted on the wings and mounted with the possibility of movement in the sleeves 31 mounted on the rack 3 (Fig. 1, 4).

To regulate the movement of the brush drum I (FIG. 2) to the end of the pipe 21 being processed, depending on its diameter, the pneumatic cylinder 13 is made with

0 with a double-sided rod, on the upper part of which a washer 32 is fastened. In this case, the rod can move inside the hole of the stop 33 mounted on the screw thread 34, which is installed in the bearing supports of the rack 3. On the screw 34, a handle 35 is fixed, rotating which adjusts the distance from the support surface of the washer 32 to the stop 33, equal to “I (Fig. 1).

The machine works as follows.

Before the treatment of the pipe end face, the pressure roller 10 and the platform 14 are in the initial upper position, the gear motor is disconnected, the brush drum constantly rotates from the electric motor 16, and the link 23 is in the extreme position corresponding to one of the working positions of the brush drum, for example " (Fig. 5).

In order to ensure effective stripping of the pipe end of an arbitrary diameter from a given size range (ymax), as a result of an experimental study of the machine, the oscillation amplitude of the brush drum (the distance between the positions) was selected. It is equal to the average diameter d of a given size range. Here, the stroke h of the pneumatic cylinder 27 (machine design parameter) is determined from the obvious proportion (Fig. 4).

h. A

dcp t

from where

u dep-L

h- Thus, the displacement of the scenes 28 by the value of h corresponds to the distance dcp between the working positions of the brush drum.

Before processing a batch of pipes with a certain outer diameter, rotating the handle 35 (FIG. 1) exposes the stop 33 to the corresponding position, and for convenience and speed of adjustment on the machine, a scale and an arrow (not shown conventionally) are attached, mounted respectively on the rack 3 and the stop 33.

The operations of preparing the pipe for stripping its end face are as follows.

The pipe is transported, for example, by a roller table up to the stop (conventionally not shown), after which it moves in the transverse direction and is laid on the support rollers 4, 5 of the machine (in Fig. 2, the roller 36 of the preparatory position is shown conventionally). In addition to rollers 4, 5, the tube rests on the non-driven rollers of the mechanized table (conventionally not shown).

Thereafter, air is supplied to the piston cavity of the pneumatic cylinder 8, as a result of which the pressure roller 10 is supplied to the pipe and clamps the latter. Next, gearmotor 7 is turned on and the pipe receives rotation.

Then, a command is issued to actuate the pneumatic cylinder 13, as a result of which the I (Fig. 1) platform 14 with the plate 18 and the rotating brush drum 17 is lowered by a predetermined amount. In addition, the pull 29, mounted on the plate 18, moves by the same amount “I'm in the backstage 28.

Thus, the brush drum is brought to the end of the pipe with a predetermined overlap. For definiteness, we will assume that the brush drum occupies the “x” position and has clockwise rotation (Fig. 5).

The stripping process begins, and in this case the brushes, bending, meet the I (III) forming outer surface

pipes, resulting in a high quality outer burrs. To ensure effective stripping of the entire contour of the pipe (external or internal), it makes 2-3 turns, which is achieved by keeping the treatment time set by the operator from the control panel. After the specified time has elapsed, the pneumatic cylinder 27 is actuated, as a result of which the slide moves by an amount L, is carried away by pu 29. In connection with this, plate 18 rotates in bearing assembly 19, and the brush drum moves to position "y" . five). In this position, the brushes meet II (IV) forming the inner surface of the tube, as a result of which internal burrs are qualitatively removed.

five

The time delay is the same as when

machining the external burrs, a command is given to trigger the pneumatic cylinders 13 and 7, as well as to shut off the gear motor 7. As a result, the platform 14 and

0, the pressure roller 10 is returned to its original upper position, and the pipe 21 stops.

After that, the processed pipe is moved in the transverse direction and laid on the rollers 37 of the unloading role 5 gang (in Fig. 2 conventionally shown in dotted lines) and transported for further processing. A subsequent pipe is laid on the rollers 4, 5 of the machine and the cycle is repeated. The difference in its processing compared to

The previous pipe is only that the inner burrs are first cleaned, and then the outer ones, i.e. the initial position of the brush drum is in the "y" position, and then when the pneumatic cylinder 27 is triggered, it moves to the "x" position. In other words, on each odd tube, the outer burrs will first be removed, and then the inner ones, on the even tube, on the contrary.

50

Claims (1)

Invention Formula A machine for stripping the ends of pipes, comprising a frame with a rotating drive and a clamping mechanism for the pipes being processed, placed on a platform, a drive brush drum and a mechanism for clamping the brush drum to the cleaned tube, characterized in that, in order to increase productivity and expand technological capabilities, it further comprises guides mounted on the bed, a plate mounted on the platform and connected with it by means of a hinge, with its swinging drive relative to the hinge axis with a brush drum placed on it, the swinging drive of the slab including couyida 17 a fox with hams, one end connected to the latter, and the other housed in guide beds, pivotally connected to the swinging plate and driving its reciprocating movement in the swing plane. FiaZ Figm GSH „