SU463308A1 - Multipoint press - Google Patents

Description

one

The invention relates to the field of forge and press equipment.

A multiposition press is known that contains successively located sliders, connected by means of connecting rods to the drive shaft.

The press has insufficient productivity and is unreliable in operation.

In the proposed press, the drive shaft is made cranked, each crank is shifted relative to the other by a given angle, while the load is provided with a drive mechanism for feeding workpieces to each position, the drive of which is made in the form of an additional gear drive connected to it. the shaft with the cams mounted on it, shifted one relative to the other by a given angle and connected by means of pullers to the push rods, and the mechanism for feeding the workpieces is made in the form of The racks with saw-tooth teeth that are firmly fixed at each position, between which are located on the base of the inclined sectors that are articulated and connected to the rods.

FIG. 1 shows the proposed press; FIG. 2 - the same, side view; in fig. 3 - transporting mechanism; in fig. 4 - the same: side view; in fig. 5 - the same, top view.

The output shaft of the electric motor 1 is connected via a belt drive 2 to the crankshaft 3, on which cranks 4, flywheel and clutch 5 are provided. The number of cranks corresponds to the number of press positions. The axes of the cranks are shifted relative to each other at a given angle. With the help of connecting rods, 6 cranks are connected with sliders 7, carrying punches 8. Instrumental

the unit is mounted on the opposite side of the moving sliders with punches and contains a die, an ejector (not shown), an emphasis 9. These mechanisms may be non-twisting or have a drive similar to

drive punches, for example, from the second crankshaft or from a system of t g and levers (not shown). The direction of movement of the punches is horizontal, but they can also be split under the ANGLE to the axis of the workpiece 10

or vertically.

To feed the blanks from one position to another, a special mechanism is provided, consisting of two fixed rails I, equipped with sawtooth teeth. Between

slats are placed inclined sectors 12 for transferring the blanks. The sectors are hinged on the supports 13 mounted on the base 14. Each sector in its end portion has a radius limiter for the blanks that enters (in an idle state) in the notch on the inclined part of the neighboring sector. In the lower part of the sector, there is a protrusion for a hinge with a thrust 15, which, in turn, is hingedly connected to the two-arm lever 16 under the press sliders. At the second end of the lever is a roller in contact with the cam 17 of the shaft 18. The number of cams, levers, tg and sectors is selected depending on the diameter of the workpiece and the dimensions of the stamp. Usually the pitch between positions is three to six steps between sectors or ramp teeth. The entire system (sector-ha-lever) is spring-loaded and ensures that the roller of the lever is pressed against the rising cam. Cams are shifted relative to each other at a given angle. An additional shaft with cams, located parallel to the wheel shaft, at one end carries gear 19, meshed with gear 20 of the crankshaft. Due to the fact that the number of teeth of both gears is taken to be equal, the camshaft rotates synchronously with the crankshaft and makes the same number of revolutions. The guides 21 are located on both sides of the rails with sawtooth teeth and are pre-harnessed to limit the axial movement of the workpiece as it moves between press positions. At the working positions in the barrel there are holes for passing the tool. Ejectors and ejectors can be mounted in the guides. Monsdu press positions can also be fitted with donolpitelnye and auxiliary devices that provide cleaning, lubrication, counting of workpieces, etc. When the crankshaft rotates, the sliders associated with independent cranks with cranks perform reciprocating movements, producing a workpiece. With each whorl of the crankshaft, Pitcher makes one double move. The workpiece is fully machined, successively through all press positions. The transporting mechanism transmits the blanks. When the additional shaft is rotated with the cams, the sectors are rocked. When lifting the sector, the bungler, located in the nests of the fixed rails with sawtooth teeth, is raised and rolled along the inclined part (Fig. 3) of the sector until it touches the tongue of the previous (along the way) sector, which comes into operation with some advance. Then, the sector that rolled the workpiece is lowered, and the workpiece remains in an intermediate position, resting on the inclined teeth of the rails and resting on the tongue of the sector. When lowering this (previous) sector, the billet makes another move and rests on sawtooth protrusions of the rails, centering on them, as in Prism. In this position, the workpiece can be processed or it is blank (intermediate). Having made several similar movements, the workpiece rolls from one intermediate position to another and reaches the working position. Sector movements are interlocked with slider movements. The presence of idle positions does not affect the total cycle time, since idle strokes are blocked by workers. Forms of a modular and 3 obre i-e and multi-position iress, containing successively located sliders connected by means of connecting rods with a drive shaft, characterized in that, in order to increase press performance and reliability in operation, the drive shaft The crankshafts are made, each crank is shifted relative to the other by a given angle, while the pressure is provided with a drive mechanism for feeding workpieces on each position, whose drive is made in the form installed parallel to the crankshaft and connected with it gear drive of an additional shaft with slips placed on it to one another at a predetermined angle and connected by means of t-pushers, and the feed mechanism of the workpieces is made as fixedly mounted at each position of the rails with saw-tooth teeth, between which the base is pivotally fixed inclined sectors pivotally connected to the rods. 9 -10 8 7

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FIG. 2

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