SU998032A1 - Apparatus for heat cutting of parts from sheets - Google Patents

Description

The invention relates to the field of gas flame treatment of metals and can be used in engineering / shipbuilding and construction.

A device for thermal cutting of parts from sheets, containing a column with a hinged frame, on which a driving mechanism with a cutter is fixed, mounted on the column with the possibility of vertical movement and rotation 1 is known.

This device requires time n§ manually rearranging the template and transferring the drive mechanism from one template to another, which reduces productivity.

It is also known a device for thermal cutting of parts from sheets, containing a table mounted on a frame with a grid part for laying the sheet to be cut, a sheet transfer mechanism, a ventilation system, a waste conveyor, section. mvschenny under the lattice. part of the table, and the column on which the leading, mechanism with a cutter and trunk with a template 2 are installed ..

A disadvantage of the known device is the necessity of rearranging the driving mechanism during the transition from

one part to another, which reduces productivity.

The aim of the invention is to improve. performance by eliminating the drive mechanism permutation when moving from one part to another. .

This goal is achieved in that a device comprising a table mounted on a frame with a grid part for laying the sheet being cut, a sheet transfer mechanism, a ventilation system, a waste conveyor located under the grid part of the table, and a column on which the driving mechanism is installed. cutter and trunk with a template,: equipped with a mechanism for moving the template in the form of attached to the trunk

20 parallel to the table of the guides of the drive carriage with limit switches mounted on the guides, the template being mounted on the carriage, and the device is equipped with a ruler with dividers mounted on one of the guides and cams mounted on the ruler with the possibility of interacting with limit switches.

FIG. 1 of the proposed installation; in fig. 2 is a view A of FIG.

I in FIG. 3 is a view B in FIG. 2; in fig. 4 shows a section B-B in FIG. 3 in FIG. 5 is a view of FIG. four.

The installation consists of a bed 1 on which a table 2 with a lattice part is mounted, a column 3 on which trunk 4 is mounted, a driving mechanism 5 with a magnetic finger b, a cut 7. On a trunk 4 a driving carriage 8 is installed, carrying a steel template 9 and moving along the lines 10, fixed in the housings 11 and 12, with the screw shaft 13 and the electromechanical actuator 14, the driving carriage 8 being mounted for movement across the longitudinal axis of the sheet metal movement unit.

The upper carriage 8 is also equipped with upper switches 1 and lower 16, which interact with the tongs 17 fixed to the ruler 18 with nuts 19. The ruler 18 is fixed in the guide 20 parallel to the movement of the carriage 8 with screws 21. The ruler 18 It has a scale with divisions 22 for convenient installation of cams 17. Arrows 23 are mounted on cams 17. At the end of the stroke of the driving carriage 8, limit switches 24 are installed.

On the frame 1, the ventilation system 25 is also installed. In order to feed the sheet metal into the cutting zone, in front of the table 2, a sheet movement mechanism is installed in the form of a KOH chain weir 26 with pushers 27 on each chain. Under the trellised part of the table 2 on the rails 28 mounted trolley 29 with containers 30 and 31 for% cleaning

waste.

The device works in the following way.

On the previously removed line 18, the cams 17 are installed according to the map of the cutting sheet being cut. The number of installed cams 17 is equal to the number of blanks cut across the width of the sheet, and the distance between the cams is equal to the distance between the blanks.

The cutting of the blanks takes place on the cams 17 mounted on the top of the ruler 18 (one row of blanks is cut out) and on the cams 17 mounted on the bottom of the ruler 18 (the second row of blanks is cut out). Work on the upper or lower cam row is provided by an electrical circuit (not shown).

Since round-shaped blanks are cut out in a checkerboard pattern, the cams mounted below the ruler 18 are placed in the middle of the distance between the cams mounted above the ruler 18.

After the cams are mounted, a sheet to be cut is laid on the chain conveyor 26 with the help of lifting equipment and fed into the cutting zone on the table 2 with the lattice part. The conveyor 26, having a reverse drive, is stopped at the right time by pressing the corresponding button on the control panel (not shown). Then, the cutter 7 is brought to the corner of the sheet being cut according to the map cut and the drive carriage 8 is moved to the magnetic pin 6 so that it can roll around 9 when the cutter 7 is in the required place of the sheet according to the cut map. After that, set to guide 20 ruler 18 so that the limit switch

15 or 16 was triggered by the first cam 17, mounted at the top or bottom of the ruler 18, which was fixed with a screw 21. The installation was prepared for operation.

The billet is cut, which falls into container 30 or 31 (depending on which one is intended for billets). The drive carriage 8 is moved to the next position, which is determined by the position of the cam 17 on the ruler 8. In this case, the limit switch 15 or

16 operates from the corresponding cam 17, and the drive carriage 8 stops. Thus, the whole row of blanks is cut out, then the sheet to be cut is slid into the required step according to the card. The second row of blanks is cut out, work on the second row of cams.

After cutting the blanks, a part of the sheet (waste) in the cutting zone is cut manually into pieces that fall into a container 30 or 31 intended for waste. After the containers 30 and 31 are filled with waste or blanks, the cart 29 is fed to the unloading position.

The advantages of the installation are noticeable during plasma cutting, when the internal holes in the blanks are cut out without a small hole previously drilled or cut by the cutter (during plasma cutting, plasma is installed instead of a gas cutter).

First, cut all the holes in the blanks in one row of the sheet. In this case, the magnetic finger 6 is brought inside the steel template 9 using a special handle on the driving mechanism (not shown), the magnetic finger 6 then moves together with the template 9 (the finger electromagnet coil is under voltage). After cutting one hole, the plasma torch is turned off (the drive of the magnetic finger 6 can not be switched on) and the driving carriage 8 is moved to a new position. Then, turn on the plasma torch and cut out the second hole. After cutting out all the inner holes of the blanks in one sheet row, the driving carriage 8 is moved to its original position, the magnetic finger is placed close to the outer edge of the steel template 9 and is cut along the outer contour of the blank. Then the plasma torch is turned on (magnetic finger drive 6 remains on) and moves the drive car to the next position, where it stops at the same point as when cutting the corresponding internal hole of the workpiece. A plasma torch is turned on and the second workpiece is cut. After all the blanks in one row of the sheet have been cut, proceed to cutting the blanks in the second row.

Since when cutting blanks the magnetic finger 6 all the time moves together with the clamped pattern 9 due to the force of attraction (the coil of the electromagnetic finger does not turn off), it is not necessary to manually sweep the hinge frame of the machine each time when cutting the next blank so that the magnetic finger b touches side surface of the steel template 9.

The process of cutting one row of blanks on the inner or outer contour is easy to advertise. It is included in the circuit diagram of a time relay (not shown), with which you can set the time required for one time along the contour of the workpiece. Wherein . after a cut is made along the contour of the workpiece (internal or external 1y), the driven carriage 8 automatically moves to the ice position. The cutting of the entire sheet can be automated by ensuring that one spread is carried out at a certain step after cutting two rows.

Thus, the proposed device provides an increase in performance compared with the known

by automating the process of cutting blanks, and in the absence of automation in small-scale production, there is no need to manually move the magnetic finger to the steel template, which is especially inconvenient when the workpiece is cut at a distance of 1 m or more from the worker.

The installation also provides a reduction in the number of steel templates, while significantly reducing the need for spacers and devices for storing templates.

Claims (2)

1. USSR author's certificate 268144, cl. В 23 К7 / 02, 07.10.68. 2. Authors certificate of the USSR 588082, cl. B 23 K 7/02, 30.12.75 (prototype). Cut sheet 1 16 15 - / five/ 30 29 2S Phi & -1 Bb 17 Type G Fig 5