SU1299648A1 - Automatic production line of roll-formed section - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to devices for the manufacture of bent, preferably perforated, profiles from web material. The purpose of the invention is to improve the quality and performance. The automatic line comprises a coil box 1, a straightening-out device 2, loop compensators 6, 10, a press 5 with a die 4 for punching holes, a belt feeding mechanism 3, a roll forming machine 7 and a device 8 for cutting profiles. When the profile passes through the device for cutting away from the photo light signal, the drive for moving the carriage with the cutting tool is activated. Then, at the right moment, the clamping jaws capture the moving profile, and the cutting tool produces a piece of the part of the required length and with a certain distance from the face to the perforation. The presence of a non-contact photo relay allows the fabrication of a non-rigid profile. 1 3. p. F-ly, 7 ill. SS (L ISD g; o O) 00 FIG. R

Description

The invention relates to the processing of metals by lavilium, in particular to devices for the manufacture of curved profiles from coiled material.

The aim of the invention is to improve the performance and quality of parts.

FIG. 1 shows the general layout of the line; in fig. 2 - tape feed mechanism for niar perforations; in fig. 3 - axonometric image of a perforated profile; in fig. 4 - device segments, top view; in fig. 5 shows a section A A in FIG. four; in fig. 6 is a section BB in FIG. four; in fig. 7 device cuts, side view.

The proposed automatical line from 1-ovolozheniya curved profiles contains technologically interconnected and successively sloped coil 1, correctly-times the unwinder 2, the mechanism 3 feed tape to a given Hiar, punch 4 for punching holes mounted on the press 5 , nonzero compensator 6, roll forming mill 7, device 8 cut-offs with storage hopper 9 cut profiles and additional loop compensator 10.

The belt feed mechanism includes a pneumatic cylinder 11, the rod 12 of which is connected to a rack 13, which interacts with an electrical contact 14, which electri- cals are connected to a pulse counting relay and are mounted with the ability to adjust the position relative to the rail 13 by means of a screw 15, which is stop m for the rail 13 and limits its travel under the influence of the rod 12. The gear rail 13 is connected to the gear wheel 16, in which the overrunning clutch 17 is mounted, fixed on the shaft 18. The shaft 18 is connected to the rollers through gears 19 and 20 21 and 22.

An adjustable stop screw 15, which is motionless in conjunction with a pulse counting relay and control system, ensures that the perforations are stamped with high accuracy in their relative position.

The cut-off device is equipped with a pneumatic cylinder 23 of the carriage 24 and contains driving clamping jaws 25, made in the shape of a profile, a photo sensor 26 mounted on a bracket 27, pushers 28 with springs 29 and a milling cutter 30 with a drive 31. Photo relay 26 is mounted with possibility of adjustment of position relative to the milling cutter 30 by means of a screw 32. The milling cutter 30 is capable of reciprocating movement perpendicular to the direction of movement of the profile. The mobile units and parts of the devices have end position sensors that provide the necessary sequence of operation of the mechanics and devices in the automatic mode, according to the definition of the first cycle.

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Lini works as follows. The tape roll fixed on the roll 1 is unwound, the tape passes through the correctly unwinding its device 2 and is fed by the tape feed mechanism 3 with a given step in the die 4 for punching holes in the press. Then, the tape on the profiling mill 7, gradually moving through the work rolls, is continuously formed into a profile, which is cut by the device of pieces 8 into parts of a certain length. The cut parts are ejected into the storage bin 9 by the action of the spring-loaded pushers 28. The stamp 4 punches holes of the appropriate shape in the tape. To make large intervals between holes, this interval is divided into an equal number of segments, the magnitude of which is less than or equal to the largest one. The single step of shifting the belt is carried out by means of a stock 12 through a rail 13 and a gear wheel 16. An overrunning clutch 17, gears 19 and 20 and rollers 21 and 22. Each movement is recorded on a pulse counting relay, and after a predetermined number of movements is reached, said relay includes 5 presses 5. Then, moving in a roll forming mill 7, the tape is transformed into a profile that passes through uncovered s jaws 25 of the carriage 24. The gap between the clamping jaws 25 and the profile is set in the range of 1-2 .Material belt thickness. If a perforation is required on the ne profile or if there are no requirements to ensure accurate positioning of the perforations relative to the profile end, the non-displacement speed of the carriage 24 from the main cylinder 23 is set by the speed regulator (throttle) more than the velocity of the profile. In the initial position, the carriage 24 is located on the side of the bending mill 7. The photoreflier 26 is positioned relative to the cutting tool 30 with the help of a screw 32 at a distance equal to the length of the cut nrofil. When the end surface of the profile intersects the zone of action of the photo relay 26, the n) and 23 of the carriage 24 turn on. Considering that the speed of the carriage 24 is set higher than the speed of movement of the profile, the zone of action of the photo relay 26 (which was covered by the profile) again crosses the end surface of the profile the passage of light from the source, at this m. the drive of the clamping jaws 25 is turned on, the drive 23 of the carriage 24 is turned off and the drive 31 of the milling cutter 30 is turned on. The carriage 24 with the drive 23 turned off is mixed by a profile that is compressed a plurality of sponges. 25. The cut profile is spring-loaded pushers 28 discharged into a storage bin. Then the cutting tool 30 by reversing 0

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The switching of the drive 31 returns and the initial position, the jaws 25 expand, the drive 23 moves the carriage 24 to the side, prevent the profile from moving until the end edge of the profile intersects and overlaps the action of the photo relay 26, which changes the direction of movement of the carriage 24 in the opposite direction i.e., in the direction of moving the profile. And the cycle repeats.

This takes into account that the relative speed of movement of the profile and the carriage is equal to the difference of these speeds and the lower the speed of the working movement of the carriage 24 from the actuator 23 relative to the speed of movement of the profile, the more accurate the profile is cut due to the more accurate gripping jaws 25 of the profile and reducing the inertia error executive control systems. If the exact position of the hole relative to the end of the profile is required (eliminating the possible accumulation of movement errors), the speed of movement of the carriage 24 is set lower than the speed of movement of the profile.

A photo relay 26 is installed in the direction of movement of the profile relative to the cutting tool 30 at a distance equal to the distance between the trailing edge of the perforation and the front end surface of the profile being cut.

In this case, when the end surface of the profile intersects and overlaps the zone of action of the photo relay 26, the carriage moves in the direction of movement of the profile at a lower speed and the edge of the perforation of the profile reaches and opens the zone of action of the photo relay 26 and light from the source enters the photo relay. Then the drive of the clamping jaws 25 and the drive 31 of the milling cutter 30 are turned on, the drive 23 of the carriage 24 is turned off, the profile is cut and dropped into the storage hopper 9, the milling cutter 30 moves to its original position, the carriage moves in the opposite direction until the end edge of the profile crosses the photo relay 26 again Thereafter, the process is repeated.

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The tape feed mechanism of the proposed design, due to the presence of a hard stop with a sensor, a pulse counter for the rack travels, allows the material to be resharpened into ptampes with high accuracy over a wide range of perforations. The design of the cut-off device allows cutting the profile with maximum productivity of the light-duty mill and, at the same time, obtaining a profile of high precision perforation relative to the end surface, as well as without perforation, and the presence of a non-contact photo relay allows producing a non-rigid profile.

Claims (2)

Invention Formula . Automatic production line of curved profiles. perforated, containing technologically interconnected rolls, a tape feed mechanism for a given step, a press with a punch die for punching holes, a loopback compensator, a rollforming mill and a cutting device, including its movable carriage with a power cutting tool m, that, in order to increase the productivity and quality of parts, the line is equipped with a straightening-unwinding device and an additional loop compensator located between the roll holder and the press, and the carriage is The sections are equipped with a drive for its displacement, configured to adjust the speed of movement, driving jaws for clamping a profile and a photo relay mounted on a carriage, the photo relay being electrically connected with a driving movement of the carriage, driving of the clamping jaws and cutting tool drive, and the feed mechanism The tape to the specified Hiar is located behind the punching press. 2. A line according to claim, characterized in that the photo-relay mounted on the carriage is mounted with the possibility of re-scanning the interleaving relative to the cutting tool. 22 FIG. 3 3J (pue. A-A 27 V 25 QOt / e. five f Ti  2J Compiled by S. Shibanov Editor N. Shvydka Tehred I. VeresKorrektor A. Zimokosov Order 808/7 Circulation 733 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4 j-g CDz / z /