SU1278096A1 - Cold upsetting automatic machine - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used for the manufacture of core products. The purpose of the invention is to increase the productivity of the cold-rising auto-eezomat due to the rapid removal of the impact plunger from the high-pressure chamber. To achieve the goal, the cocking mechanism is made in the form of a cam (K) 10 rigidly fixed on the drive shaft, a two-armed lever 12 mounted on the II-K axis 10 and a swinging single-arm lever 17 with rollers 18 and 19. The lever 17 is placed on the base frame using the axis 16. A protrusion 15 is formed on the face surface K10. The cocking mechanism is connected to the impact plunger by means of a connecting rod 14. In the process of making the working stroke, the impact plunger creates a high pressure pulse, under the action of which the technological operation is performed. In the extreme lower position of the impact plunger K 10, turning, it acts on the roller 18 and through the one-arm lever 17 and the roller 19 on the upper BuS l ((L to 00 ° from 1

Description

part of the two shoulders lever 12, turning it 30 ° in the direction of travel. Yu. The plunger leaves the high-pressure chamber,

enabling the actuators to immediately begin working out cycles. 2 Il.

The invention relates to the processing of metals by pressure and can be used for the manufacture of core products.

The purpose of the invention is to increase the productivity of the cold-set automaton due to the rapid withdrawal of the hydraulic accumulator plunger from the bottom dead center.

FIG. 1 shows the scheme of cold heading; in fig. 2 - platoon mechanism.

The machine contains engine-mounted engine 1, rotary table 2 with dies 3 and feed mechanism 4, which are driven by 3 movements through chain transmission 5, Maltese 6 and crank 7 mechanisms, chain transmission 8 and drive shaft 9 with flywheel-cam 10. On The axle 11 of the cam 10 is mounted, rotating on it, a pivoting double-arm lever 12 connected by means of a finger 13 to a crank-schatunny mechanism 14. The cam 10 is equipped with a protrusion 15. On the axis 16 fixed to the frame of the machine, a swinging single arm 17 with rollers 18 is installed and 19, rotating on axles 20 and 21. A crank mechanism 14 is connected to a movable body 22, inside of which is placed an elastic sealing jacket 23, a gas accumulator 24 with a valve 25 and a fixed bottom 26. A movable body is connected to a plunger 27.

The machine also contains a low pressure chamber 28 with channels 29, a high pressure chamber 30 with working channels 31, supply and drain channels 32, working cylinders 33 and pistons 34 with punches 35, ring spools 36 with shoulders 37 and 38, rodless cavities 39 with holes 40 and 41, rod end 42 with holes 43, hydraulic accumulators 44 and 45, pipelines 46-50, hydraulic valve 51, pipe 52 with non-return valve 53, ejector 54 with spring 55, lever 56 and rod 57, as well as working liquid 58.

The machine works as follows.

Before starting work, the movable body 22 together with the plunger 27 rises to its highest position and the chamber 30

high pressure is filled with liquid 58 through valve 51 and feed channel 32. Then gas gas 24 is filled with gas. Under the pressure of compressed gas, plunger 27 occupies the lowest position.

When the engine 1 is turned on, the rotation is transmitted through the chain drive 8 and the drive shaft 9 to the cam 10. When the cam 10 rotates, the protrusion 15, acting on the lower part of the lever 12, begins to rotate it as the cam rotates, the crank 14 moves to the upper position, providing a lift housing 22, the roller 18 goes to the line of the upper one or the cam 10, and the single-arm lever 17 occupies the upper position. The liquid from the hydroaccumulator 45 is displaced into the high-pressure chamber 30, and from the low-pressure chamber 28 the liquid is displaced into the hydroaccumulator 44. As a result, the pistons 34 and the annular spools 36 move to the extreme right position, blocking the apertures 41.

When the crank mechanism passes through the top dead center, the housing 22 with the plunger 27 under the action of the compressed gas in the gas accumulator 24 accelerates to a predetermined speed. In the process of moving the plunger 27, the liquid 58 from the hydraulic accumulator 44 enters the low-pressure chamber 28. When a plunger 27 strikes a fluid in a high pressure chamber, a high pressure impulse occurs, under the action of which the pistons move to the extreme left position, doing the required work by punches 35. At the same time, the slides 34 move the annular spools 36 to the extreme left position, opening the holes 41, excess liquid It goes into hydroaccumulator 45 and begins a new cycle of operation.

At the moment of the extreme lower position of the crank mechanism, the cam 10 rotates and acts on the roller 18 and through the one-arm lever 17 and the roller 19 on the upper part of the double-arm lever 12, turning it 30 ° in the course of the cam movement. At this point, the plunger 27 exits the high pressure chamber and the actuators begin to work out the duty cycle.

Claims (1)

Invention Formula 15 rigidly fixed on the drive shaft of a cam with a profiled side surface and a double arm mounted on the same shaft with the possibility of free rotation relative to the shaft and one of the arms interacting with a projection made on the face of the cam, while the second arm of the double arm is pivotally connected to the plunger the torus, and the one-shoulder arm of the us- Cold-heading machine, containing 20 A piping system connected with a hydraulic accumulator made with a high-pressure chamber, a plunger and a plunger charging mechanism kinematically connected with an automa- nous drive shaft, characterized in that, in order to increase productivity due to the rapid removal of the hydraulic accumulator plunger from the bottom dead point, the mechanism of the platoon is made in the form of fixed on the frame rigidly fixed on the drive shaft of a cam with a profiled side surface and a double arm mounted on the same shaft with the possibility of free rotation relative to the shaft and one of the arms interacting with a projection made on the face of the cam, the second arm of the double arm hinged to the hydraulic plunger mounted on the bed rotary table with stamping dies placed on it, coaxially mounted punches with drives in the form of a hydraulic cylinder one of its rollers with lechom double-armed lever, not associated with the plunger pressure reservoir of the torus, and the other - with a profiled side surface of the cam. yo oSl /// -Tir./ / J 1 1 - / 4 Z $ ue.f 56 Compiled by E. Fazlulin Editor N. BobkovaTehred I. VeresKorrektor L. Patay Order 6679/10 Circulation 655Subscription VNIIPI USSR State Committee on delalam inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Branch PPP "Patent, Uzhgorod, st. Project, 4