SU596343A1 - Automatic for cutting work to length - Google Patents

Description

(54) AUTOMATIC MACHINE FOR MEASURING CUTTING

Editing mechanism 3 contains one guide roller 9 with grooves according to the number of streams and 11 ... rollers 10.

The clamping mechanism 4 consists of two spring-loaded rollers 11, which are in constant contact, in one of which there is an overrunning clutch (not shown in the drawing).

The cutting mechanism 5 is mounted on a slider 12, spring-loaded with springs 13 relative to a bracket 14 fixed to frame 1. The cutting mechanism is made in the form of two flat comb knives 15 and 16. The knife 15 is fixed on the slider 12 and has a guide pin 17 on which the knife is mounted 16 with a notch; 18 to move relative to the ram 19. The latter will move the knife 16 in the direction perpendicular to the direction of movement of the slide. The knives 15 and 16 are pressed together by a strap 20, a spring-loaded spring 21.

The slider movement unit is made in the form of a two-arm rotary lever 22, at the ends of which the rollers 23 and 24 are fixed, which are located in mutually perpendicular planes. The roller 23 interacts with the slider 12, and the roller 24 with the copier 25 of the nodache mechanism 6. An adjustable stop 26 is provided for adjusting the position of the slider 12.

The feed mechanism 6 is mounted on a carriage 27 moved along the bed guides 28 by means of an arm system 29 connected to the power cylinder 30. A gripper 31 connected to the power cylinder 32 is mounted on the carriage. The gripper 31 is made in the form of a central fixed jaw 33 fixed on the body of the ram 32 and the supporting axle 34, on which the movable jaws 35 are freely mounted, spring-loaded relative to each other and the central jaw 33 by means of, for example, rubber washers 36. The jaws 35 move towards the central jaw 33 with the help of a horseshoe-shaped wedge 37 enclosing them with wedge surfaces 38 interacting with wedge surfaces of 39 extreme 40 moving jaws. The wedge 37 is moved into the groove 41 of the central jaw 33 by means of the rod 42 of the power cylinder 32.

To adjust the stroke of the carriage 27, there is an adjustment thrust bolt 43 with a nut 44. The copier 25 is fixed on the carriage.

The movable fixed stop 7 consists of a base 45 on which buffer device 46 with a limit switch 47 is located, a retainer 48, a locking stop with a certain pitch along the entire length of the guides 28 of the frame 1 and a pressure bolt (not shown)

The automat is equipped with a pneumatic electric control circuit with a track switch (not shown).

The automatic machine has two operating modes: adjustment and automatic. In adjustment mode, the coils 49 with wires to the coil holder 2 are installed, the ends of the wires are passed through the straightening mechanism 3, the clamping mechanism 4 and lead through the guide sleeves 50 to the cutting mechanism 5. By turning on the movable knife 16, the ends are cut. The adjustment to the size of the length of the wire being cut is made by limiting the stroke of the carriage 27 by shifting the movable stop 7 (coarse

setting) and installing the stop bolt 43 (fine tuning) to the appropriate size.

In automatic mode, the machine works as follows.

Initial position. The carriage is in the extreme rightful position, the moving jaws 35, 40 are unclenched (ram 32 is turned off). When you click on the "Start (on

5 of the drawing is not shown) the carriage moves to the leftmost position. When the carriage approaches the cutting mechanism, the copier 25 by pressing the roller 24 of the lever 22 removes (raises) the slider 12 with the cutting mechanism 5 from the req zone, lowering the jaw 33, 35 and 40 of the feed mechanism 6 to the ends of the wires.

In the leftmost position, the carriage presses the limit switch (not shown). At the same time, the power cylinder 32 is turned on. The wedge 37, moving along the wedge surfaces 39 of the outer lips 40, clamps the ends of the wires. With a certain delay, the time required for the clamping mechanism to operate, the carriage drive actuator cylinder 30 switches. Lastly, drawing the wire, moves to the extreme right position until it comes in contact with the movable stop 7.

When the carriage moves away from the cutting mechanism, the slider 12 is released, which, under the action of the spring 13, returns to the initial position.

When the carriage is pressed against the limit switch 47 of the stop 7, the power cylinder 19 is simultaneously turned on, the power cylinder 32 is turned off and the power cylinder 30 is switched to reverse.

In this case, the knife 16 cuts off the wires and the cylinder 19 is turned off, and under the action of elastic elements, such as rubber washers 36, the movable jaws 35 and 40 open. The cut wires fall into the receiving chute 8, 5, the carriage 27 begins to move to the extreme left position and the cycle repeats.

Claims (3)

01. Machine for measuring cutting blanks, containing a successively installed clamp on the frame, a cutting mechanism, a feed mechanism in the form of a carriage, carrier clamps and installed with the possibility of reciprocating movement, and an adjustment unit  its course, characterized in that, in order to ensure the accuracy of cut-lengths by ensuring the capture of workpieces behind the cutting zone, it is equipped with a spring-loaded slide bearing the cutting mechanism and the node of its movement 0 for the passage of the grips, made in the form two shoulders of a pivot arm at the ends of which are fixed rollers located in mutually perpendicular planes and interacting one with the slider and the other with a cam fixed on the carriage. 2. An automaton according to claim 1, characterized in that, in order to provide high-quality cutting of several workpieces simultaneously, the cutting mechanism is made in the form of flat comb-shaped knives, mutually acting between themselves and pressed against each other by means of a spring-loaded strip. /; fvS}.,., 27  , s (j / 7 "" 3. Avtomat io i. 1, characterized in that, in order to simultaneously capture several blanks, the gripper is made in the form of jaws, spring-loaded relative to each other and displaced by means of a wedge covering them, connected with a power cylinder. Sources of information taken into account in the examination: 1. USSR Author's Certificate No. 327961 Cl. B 21 F 11/00, 1969. 2. USSR author's certificate number 103973, cl. B 21 F 11/00, 1955. -jt, sS.l I -Jil- FIG. one 22 24 L gz B- B & P 5 50, five Fy in-in J 25 27 FIG. b