SU1386391A2 - Apparatus for markless trimming of square sheets in guillotine shears - Google Patents

Description

The invention relates to the processing of metals by pressure, can be used in the blank production of machine-building enterprises, and is an improvement of the device according to an automatic number 884890

The purpose of the invention is to expand the technological capabilities of the device for the dimensionless cutting of right angle sheets by providing for trimming of sheets longer than the length of the knife of the guillotine shears,

The figure shows a device for the graftless cutting of right-angle sheets, in plan; FIG. 2 is a section A-A in FIG. Fig. 3 is a view B in Fig. 1 (inoperative position of the movable stop); sleep of Fig. 4 is the same, the operating position of the movable stop is "

The device for off-cut sheet trimming contains guillotine shears 1, a roller field 2 consisting of racks 3 with ball bearings 4 In the area of the roller field between the racks there are stops 5 and 6 adjacent to the guillotine shears 1, and an emphasis 7 adjoining the roller guide eight..

A cylinder 9 with a brush 10 is mounted to the side of the guillotine knife 1, a movable stop 11 is mounted on the free end of the latter, which in the working position is pressed against the vertical surface of the lower knife 12, protruding above it by an amount greater than the maximum thickness of the cut sheet 1

The fixed stop 14 is located outside the knife area and is attached to the bed of the guillotine shears from the bottom of the upper body 15, so that its supporting surface is located along the cutting line,

The distance between the stops 11 and 14 does not exceed the length of the upper knife 15

The device works as follows

In the initial position, the stops 5-7 are recessed below the level of the roller field 2, and the movable stop 11 is moved out of the cutting zone (the stem 10 is pulled into the cylinder 9).

Before feeding the sheet 13, the stops 5 and 6 are mounted on the final size of the sheet 13 in width, and the stop 7 on the final size in length. Sheet (length exceeding

| Q

20

25

ZO

35

40

five

0

five

The length of the knife 15) is fed over the roller field 2 to the cutting zone so that the beginning of the sheet does not extend beyond the upper knife 15 o. Then the stops 5-7 are installed above the level of the roller floor 2 about K and the stops 5 and 6 closely feed the sheet 13 and produce t notch along the length equal to the length of the upper knife 15c. Thus, a part of the base finishing edge of the sheet is obtained. In this case, the cut part of the waste under the impact of the knife body 15 is bent down, opening the finishing edge of the sheet and the vertical plane of the lower knife 12

Then the knife 15 rises to its original position, the stops 6 and 5 are installed below the level of the roller field 2, with the help of the cylinder 9 and the rod 10 the stop 11 moves to the working position. Then the sheet 13 moves along the cutting line until the finishing edge touches the stop 14. The stop 11 removed inoperative (stem 10 retracted into cylinder 9 and the next or last cut is made.

Thus, a clean base edge of the sheet 13 is obtained along its long side. Then the sheet is turned, pressed. the base edge to, the guide 8 and the stop 7, after which they are cut.

Claims (1)

Invention Formula A device for off-cut cutting of rectangular sheets on guillotine shears according to model No. 884890, characterized in that, in order to expand technological capabilities by providing cutting sheets with a length exceeding the length of the scissors knife, it is equipped with two additional stops, the working surfaces of which parallel to the cutting plane, one of the lugs is installed on the back side of the GUILLOTINE scissors in the cutting area with the possibility of moving and interacting with its working surface with the twisting surface of the lower boundary scissors, and the second is located in the cutting plane of the movable knife fixed on the side of the side surface at a distance not exceeding the length of the cutting edge of the movable scissors knife 7 //////////// //////////// 7 /////////// V // FIG. g 15 13 Vidb 7 Ф (/ г.З Fig