SU1230731A1 - Machine for bending and trimming lattices - Google Patents

Description

The invention relates to pressing equipment for the manufacture of metal gratings and can be used in the manufacture of household appliance grids.

The purpose of the invention is to expand the technological capabilities of the device.

FIG. 1 is a schematic representation of a machine; the general view of FIG. 2 - the same, side view; in fig. 3 - machine head; in fig. 4 shows a section A-A in FIG. 3 (in FIG. 5, a cutting knife.

The machine for bending and trimming grids contains a frame 1 with 2 dove-tail guides mounted on it.

which posted non-. how many heads 3, for example two, and clamp 4 blanks.

The guides 2 serve to set the heads to a certain size of the blanks. The fixing of the heads 3 relative to the frame is carried out with bolts 5. Electropneumatic equipment is installed inside the frame 1.

The head consists of a C-shaped body 6, in which axis 7 is rigidly mounted. On axis 7, a table 9 is mounted on bearings 8, on which, with the help of screws 10, a knife 11 is fixed and an axis 12 equipped with needle bearings 13 located in horizontal slots of the sliders 14, mounted on racks 15, which are fixed to the case in the upper and lower parts.

The movable knives 11 are made with an angle of inclination that allows them to chop the bars of the lattice alternately.

The slide blocks 14 are provided with punches 16. The bearing housings 8 of the table 9 with the knife 11 are made in the form of levers, the ends of which, when the table is rotated to the upper position, abut against the stops 17. On the axis 7, the levers 19 are attached to the sleeves 18 of the slide, and which form a rigid frame. The latter can be moved relative to the table 9 at a certain angle.

The levers 19 are connected via tangential 21 and springs 22 to the casing 6. The table 6 is pivotally connected to the rod of the pneumatic cylinder 23.

In the upper part of the case there are 6 installations. In the upper position, the table 9 is pressed onto the matrix 24, on which a microswitch 38 is fixed, which is a fixed knife 25 with a groove for centering the workpiece at the cutting position.

gives the command to return the table to its original position, i.e. reverse

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A matrix 26 is embedded on the matrix 24, the rod of which is movably connected with the levers 27 serving for the preliminary orientation of the lattice.

The nuts 28 and 29 respectively adjust the stroke and the force of fixing the workpiece with the spring 22.

The bolts 30 adjust the die 24 to the desired size of the workpiece in the longitudinal direction.

On the bed 1 between the heads 3, a clamp 4 is installed. On the rod of the pneumatic cylinder 31 of the single-action clamp, racks 32 are fixed with guides 33 mounted on them, through which the workpiece is fed. The lattice is pressed against the dies 24 by a spring 34, the pressing force is adjusted by nuts 35.

ten

15

20

25

 The machine is also equipped with elements 36-39 pneumatic. - The machine works as follows.

After supplying the workpiece to the cutting position and machine bending, the cylinder rod 26 acts on {Levers 27, which orient the grid and at the same time release microswitch 37, which commands the grid pressing to the matrices 24. Pressing the matrices 24, the grid is centered in the slots of the blades 25, at the same time, the microswitch 36 is released, which gives a command to retract the levers 27 of the orientation mechanism, the latter at the end of the stroke press the microswitch 37, which commands the operation of the pneumatic cylinder 23, which by means of a hinge joint nor is driven Tables 9 with knives 11 and the punches 16 of the sliders 14, respectively, are driven axis 12 by

bearings 13. In parallel with the movement of the punches 16 and the knives 11 and, ahead of them at a certain angle, the clamping beams 20 move, driven by the springs 22 by means of t g 21

and levers 19. The pressure beams press the workpieces to the stationary blades 25 of the matrix, the movable knives 11 cut off the protruding ends of the lattice, after which the punches 16 bend the slider frame. In the upper position, table 9 presses microswitch 38, which

gives the command to return the table to its original position, i.e. reverse

pneumatic cylinder 23. In the lower position, the lever rigidly connected to the table presses the microswitch 39, which gives a signal to return the actuator (not shown) to its original position. The cycle is over. With the new cycle, the grid with chopped off edges and the bent edges of the frame is removed from the position of the machine ,.

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and the new grid is fed to its place, after which the cycle is repeated.

In comparison with the known ones, the proposed machine allows for both bending the grid along the contour and cutting off the bar ends protruding beyond its contour at one technological position, thus expanding its technological capabilities.

57/7 No.

thirty

(ra.g

fi & w

LA / raffpHymo

IS

Editor N.Shvydka

Order 2479/13 Circulation 655Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

FIG. five

Compiled by Y. Sukhov Tehred M. Khodanych

Proofreader I. Muska

Claims (3)

1. MACHINE FOR BENDING AND CUTTING OF GRILLES, including a frame with drive punches mounted on it, connected to the drive by means of spring levers, and a fixed matrix, different. the fact that, in order to expand technological capabilities, it is equipped with a lattice clamping means and a lattice trimming mechanism, consisting of at least two detachable heads placed on the frame, each of which consists of a C-shaped case with vertical racks mounted on drive racks by means of a pneumatic cylinder ra of sliders mounted in the upper part of the body on the supporting axes of the rotary table, mounted on the table of movable cutting knives installed with the possibility of interaction with the stationary knife the rotary table is equipped with a longitudinal axis located on it in bearings pivotally connected to the sliders, punches are mounted on the sliders, levers mounted on the bearing housings of the supporting axes of the tables are installed, which can interact with stops placed on C-shaped cases, and the means of clamping the lattice is placed $ between the heads and is made in the form of a pneumatic cylinder, on the rod of which a clamping element is fixed. 2. Machine pop. 1, characterized in that that on the supporting axes of the tables there are levers connected to the bed by means of spring-loaded rods. 3. The machine according to claim 1, with the fact that the cutting edges of the movable axes are made inclined. SU „„ 1230731 A1 1 1230731