SU1696044A1 - Apparatus for bending strips and tubes - Google Patents

Description

one

(21) 4696223/27 (22) 03.31.89 (46) 12.7.91. Bul №45 (72) A.I. Minkov, V.V. Piskareva and V.A. Kosten to (53) 621.981.1 (088.8)

(56) USSR Author's Certificate N ° 940915, cl. B 21 D 7/02, 1980

(54) DEVICE FOR FLEXIBLE STRIP AND PIPE

(57) The invention relates to the processing of metals by pressure and can be used to obtain spiral-shaped parts from piece blanks. The purpose of the invention is the expansion of technological capabilities due to the bending angle of more than 450 °. The device contains a template consisting of a fixed part (LF) and a moving part (IF) placed in the curvilinear groove of the copiers, two strips located on both sides of the copiers. The slats on one side are connected with the template axis 8, and on the other with the axis of the bending roller passing through the copy grooves. One of the slats has a protrusion, which at a certain moment interacts with the protrusion on the inverter and brings it to the working position. At the end of the bending, the IF is removed inside the woofer, freeing access to the clamping point of the new blank. 5 sludge.

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ABOUT

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The invention relates to the processing of metals by pressure and can be used for bending spiral-shaped piece preparations,

The aim of the invention is the expansion of technological capabilities due to the provision of spiral bending on a goal of more than 450 °.

FIG. 1 shows the device at the moment of bending, top view; ne figs, 2 - the same, at the end of the flexible; FIG. 3 is a section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 3; in fig. 5 is a section bb In FIG. 1,

A device for bending strips and pipes will contain bending copiers 1 and 2 with working surfaces 3 and fixed to the bending copiers 1 and 2 the fixed part 4 of the template, having a curved groove 5. In the groove 5 the movable part 6 of the template with protrusions is mounted for movement element 7. The working surfaces of parts 4 and 6 of the template are equidistant surfaces 3. The copiers 1 and 2 are freely mounted on the rotary axis 8. On the axis 8 on the outer sides of the bending copiers 1 and 2 there are fixed revolving strips 9 and 10 with equidistant longitudinal grooves 11, mounted perpendicular to the axis 8. The walls of the longitudinal grooves 11 interact with the ends of the axis 12 passing through the bending copiers 1 and 2. On the axis 12 there are mounted bushes 13 that interact with surfaces 3, and between bushes 13 there is a bending roller 14. When By flexing the precise parts, the roller 14 is spring-loaded in the direction of the template 4 (not shown), the turntable 9 has a protruding element 15 for engaging with the protruding element 7 of the movable part 6 of the template. In the case of a significant height of the movable part b of the template, an additional protruding element is provided on the opposite side of the movable part 6 of the template, interacting with the protruding element of the turntable 10 (not shown). The workpiece is indicated by the position 16, the part is bent by the position 17. The position 18 denotes the part 17 part clamped in the fixed part 4 of the template. The rotational drive of axis 8 is possible manual or mechanical (not shown).

Device for flexible bands and pipes works as follows.

The movable part 6 of the pattern is set to the position shown in FIG. 1, so that it does not interfere with the installation of the workpiece. The workpiece 16 is mounted on the fixed part 4 of the template, while the workpiece section 18 is clamped with a clip (not shown). When rotating the axis 8 clockwise

the arrow along with it rotates clockwise and rigidly fastened to the axis 8 rotary strips 9 and 10, having longitudinal grooves 11. Axis 12 with curlers 13 and bending roller 14 rotates the bars 9 and 10 clockwise along the longitudinal grooves 11 to the periphery from the axis 8, while the sleeves 13 roll around the surfaces 3 of the bending

copiers 1 and 2, and the bending roller 14 bends the workpiece 16, which takes the form of the fixed part 4 of the template. Sde lav rotation about 360 °, turn the bar 9 with its protruding element 15

upon further rotation of the clockwise, it interacts with the projecting element 7 of the movable part t of the template and moves the movable part 6 of the template clockwise in a curvilinear groove 5 of the stationary part 4 of the template. At a certain point, the protruding element 15 is disengaged from the protruding element 7, and the movable part 6 of the template is stopped further.

turning the pivots 9 and 10. To eliminate inaccuracies in the position of the movable part 6 of the template relative to the fixed part 4 of the template, a lock (not shown) is provided. Insofar as

the protruding element 15 is located first in the clockwise direction with respect to the longitudinal groove 11 of the turntable 9, then after stopping the movable part 6 of the template in position,

the parts 17 necessary for further bending, the bending roller 14, continuing continuous movement clockwise, bends the end of the part 17, which takes the form of the movable part 6 of the pattern. At the end of the bending parts 17 is removed from the axis 8 rotary bar 9 and the bending copier 2, after which the bending roller 14 and the movable part 6 of the template is moved to its original position.

The invention allows to expand the range of workpieces by providing the possibility of bending parts by an angle greater than 450 °.

Claims (1)

Invention Formula A device for bending strips and pipes, containing a driving rotary axis with a template mounted on it and copiers rigidly connected with the template, workers the surfaces of which are equidistant to the working surface of the template, a bending roller, on the axes of which there are sleeves interacting with both working surfaces of the copiers and a clamping of the end of the workpiece, characterized in that expanding technological capabilities by providing spiral-shaped bending at an angle of more than 450 °, the pattern is made of a fixed part with an open curved groove and from a movable part installed in the curvilinear groove of the fixed part, driving the template axis. one Completed in the form of copiers of two planks with longitudinal holes fixed on its ends on one side, one of which is mounted with the possibility of periodic interaction with the movable part of the template, and the ends of the roller axis are placed in the longitudinal holes of the planks. FIG. g 6-6 4fm .4 2 3 Bb 9-Ш 15 AND Thebes. five