SU1488062A2 - Apparatus for multiple-elbow bending of pipes - Google Patents

Abstract

The invention relates to devices for multi-column bending of pipes. The purpose of the invention is the expansion of technological capabilities by increasing the range of sizes of manufactured products. The device contains rotary faceplates with a copier and a bending element installed on each of them. The mutual position of the axes between pairs of faceplates is adjustable. The rack and pinion drive of the faceplate is equipped with a bend angle adjustment unit. Between one of the pairs of faceplates placed pipe clamping unit. Due to the possibility of adjusting the center-to-center distance between the axes of the faceplates and the bend angles, taking into account the springing of the material of the workpiece, the device allows bending of various linear sizes (in one direction) of products from single-legged to four-legged with different angles of bend. The pipe clamping mechanism allows the pipe to be held securely during bending, ensuring the accuracy of the specified dimensions of the bent contours. 8 il.

Description

The invention relates to pipe and tube production, in particular to devices for multi-member bending of pipes, and is an improvement of the device according to the authors. St. No. 537731.

 The purpose of the invention is to expand the technological capabilities of the device by increasing the size range of manufactured products. : Figure 1 shows the layout of the faceplates with copiers and bending elements; figure 2 - slatted drive sliders in the bent position of the pipe; FIG. 3 is a section A-A in FIG. one; on ; / Fig, 4 - section bb in figure 2; in FIG. 5, section E-B in FIG. 2; figure 6 - section GG in figure 5; on

FIG. 7 - pipe clamping mechanism; on Fig - section dD in figure 2 (the position at the end of the bend).

The device contains four faceplates 1, mounted on bearings in the housing 2 and on the drive shaft, 3 horizontally. A slider 4 carrying a copier 5 and a slider 6 with a bending roller 7 are placed in the guides of the faceplate. ten.

; The sliders 4 and 6 are equipped with rails 11; And 12, respectively, coupled with the common gear 13, rigidly sitting

on the drive shaft 3 faceplates. This shaft is equipped at the other end with gear 14, which is driven in rotation by the rail 15 and the pneumatic cylinder rod 16, the pneumatic cylinder rod is double-sided, one end of which is rigidly connected to the rail 15, and the second one contains the nut 17 for adjusting the rotation angle of the faceplate. Each faceplate is provided with a stop 18 interacting with sliders 4. The faceplate bodies 2 are installed in the bed 19 in the guide grooves 20 with the possibility of an adjustment movement in the horizontal direction relative to the bed and connected to the bed by means of an adjusting screw 21. On the bed 19. between the lower The plazbayb set up a pipe 22 mechanism 22, consisting of a pneumatic cylinder 23 connected with clamping jaws-24 and 25, which have the ability to move-. meeting each other by means of a lever 26 fixed by a fixed axis 27. Supports 28 are designed to accommodate the billet of a pipe 29. Each plate is held from spontaneous rotation of 1 pair by a cam lock 30.

The device works as follows.

The pipe 29 is installed with a longitudinal restriction on the supports 28. Furs 10

15

20

25

thirty

us turning This prevents the pipe from slipping relative to the camcorder.

After the bend is completed, the first stake of all parts of the lower face plates will move back to their original position, then the upper nodes will enter. At the upper plates, instead of the bending rollers, there are bending crackers 8, lowered by the groove 10 to the initial position. This is bypassed in order to give a possibility to bent branches to enter the copier 5. The crackers are raised by the deputy 10. The nature of the movement and the work of the remaining elements of the upper plates is not different from the element of the lower faceplates. -After all four bends are formed, the top nodes m are retracted. The clamping mechanism opens and releases the pipe. Before flexible the device with screws 21: and nuts 17 it is necessary for the required dimensions of the product.

Due to the possibility of adjusting the center-to-center distance between the axes of the faceplates and the bending angles, the material of the workpiece of the device allows bending different products in linear dimensions (in one direction), from single to four, with different bending angles. The presence of the clamping mechanism of the pipe allows you to securely hold the pipe during bending, ensuring

the bottom of the nuthole clamp clamps the pipe between the lips; the accuracy of the specified dimensions of the bent

0

five

0

five

0

us turning This eliminates the slippage of the pipe relative to the copiers.

After the completion of the bend of the first knee, all parts of the lower face plates move to their original position, then the upper nodes come into operation. At the upper plates, instead of the bending rollers, there are bending crackers 8, lowered along the groove 10 to the initial position. This is necessary in order to allow the bent branches to enter the copier 5 streams. The crackers are raised in the grooves 10. The nature of the movement and operation of the other elements of the upper faceplates does not differ from the movement of the elements of the lower faceplates. - After the formation of all four bends, the upper nodes are also retracted to the starting position. The clamping mechanism opens and releases the pipe. Before bending, the device is adjusted by means of screws 21: and nuts 17 to the required dimensions of the product.

Due to the possibility of adjusting the center-to-center distance between the axes of the faceplates and the bend angles of the material of the workpiece, the device allows bending of various linear sizes (in one direction) of products from single-knee to four-knee with different bend angles. The presence of a pipe clamping mechanism allows you to reliably hold the pipe during bending, ensuring

 bent dimensions accuracy

kami 24 and 25. The stroke of the lower pneumatic power lines lindrov 16, is included. the rails 15 are set in motion, —the right lower shaft 3 turns counterclockwise, and the left clockwise; an owl arrow (FIG. 1). At this time, the upper nodes are stationary. When the shafts 3 rotate, the gears 13 drive the sliders 4 and 6 into approach, and the faceplates 1 do not rotate. When the copiers 5 and the bending rollers 7 converge to touch the pipe 29, and the sliders 4 abut against the faceplates 18, the axes of the copiers 5 coincide with the axis of rotation of the faceplates. Then, the rotation of the lower faceplates 1 begins, with the simultaneous coiled tubing and the formation of two lower bends on it. During the rotation of the faceplates, the cam 5 remains stationary, as they are set

five

contours.

Formula of Invention

Device for multi-pipe bending on auth. St. No. 537731, characterized in that, in order to expand technological capabilities by increasing the size range of manufactured products, it is equipped with a pipe clamping mechanism and mechanisms for setting the relative position of the axes of the faceplates located between one pair of plates and faceplate bends, grooves are made in the frame, and guide surfaces corresponding to the walls of the grooves are made in the faceplates.

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Phage.1

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Kit.2

FIG. J

S. D turned

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Fye. four

fie. 7

± A

Phie.

Claims (1)

Claim Device for multi-pipe bending according to ed. St. No. 537731, characterized in that, in order to expand the technological capabilities by increasing the size range of manufactured products, it is equipped with a pipe clamp mechanism and mechanisms for setting the relative position of the axes of the faceplates located on the bed between the pair of faceplates, and the drive of the faceplate with angle adjustment elements bending, grooves are made in the bed, and guide surfaces corresponding to the groove walls in the faceplates. I 488062 Aa FIG. 3 in - β rotated FIG. 4 Ϊ488062 8-in FIG. 5 Gg Fie. 6 Fie. 7% ^ ////// ^ ///// ^^^. ~ r ..... Ek Fie.%