SU1764773A2 - Grab for removal of set of shell half-molds - Google Patents

Abstract

The invention relates to foundry. The purpose of the invention is the expansion of technological capabilities in terms of increasing the size of the extracted half-molds. The grip has earrings 6 and 14 associated with fingers 7 and 11 and made in the same length. The hinge connecting the shackle 14 to the piston drive 3 of the upper finger 11 is positioned in such a way that the specified shackles are parallel to each other when the upper finger is in the pressed position, and the hinges connecting the rocker arm 5 with both fingers are made coaxially. This allows the input / output of the gripping mechanisms with a constant mutual angular position of the fingers. 6 Il.

Description

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The invention relates to foundry production, in particular, to the design of devices for unloading machines for the manufacture of shell molds,

The invention is an improvement of the device described in ed. St. No. 1699700.

The aim of the invention is to expand the technological capabilities of the capture in terms of increasing the size of the extracted half-molds.

FIG. Figure 1 shows an embodiment of a gripper according to the invention; in fig. 2 is a view along arrow A in FIG. one; in fig. 3 shows a section BB in FIG. 2, with the gripping mechanism being shown in the clamped position; in fig. 4 shows a section B-B in FIG. 2 in the pressed position of the upper finger; FIG. 5 is a sectional view of FIG. one; in fig. 6 - position of the gripping mechanism when installing the bottom half-form on the pins of the gluing machine or the receiving table.

The gripper consists of a flat closed frame 1 of box-section with mounted power cylinders 2 (drive) for gripping mechanisms and cylinders 3 (drive) for drawing fingers together. On the opposite sides of the frame, there are symmetrically arranged two-finger gripping mechanisms fixing half-molds 4. These mechanisms are made in the form of articulated parallelograms, each of which is formed by a rocker arm 5, the first earring 6 and the lower finger 7. The arm 5 and earring 6 are connected to the frame by a corresponding shaft 8 and an axis 9 located in the supports 10 of the frame 1. The hinge axis in the connection of the rocker arm 5 and the lower finger 7 simultaneously serves as the axis of the hinge fastening the upper finger 11 interacting with the back side of the mold 4 through the clamp 12 sec. with the second element 13. In the middle part, the upper finger 11 is connected with the cylinder rod 3 by bringing together the fingers through the second stud 14, and the studs 6 and 14 are of the same length, and the joint of the coupling of the stud 14 with the stem is arranged in such a way that the said rods are parallel when pressed the position of the upper finger.

The movement of the input to the gripping mechanism is transmitted from the piston actuator 2 through the link 15 and the lever 16 attached to the shaft 8.

The synchronization of the I / O movement of the oppositely located gripping mechanisms is ensured by locking the shafts 8 among themselves with the help of levers 17 and the tie rod 18.

The semiforms are formed by the model plate 19 and removed from its surface by the pushers 20.

The half-mold is assembled on

pin x 21 gluing machine or on the receiving table.

Capture works as follows. Half-frames 4 are removed from the model

The plates 19 by the pushers 20 inside the frame 1, each into the zone of action of the corresponding pair of gripping mechanisms.

In the initial state, the piston actuator rods 3 are retracted and the actuator 2 is elongated. Gripping mechanisms are open and located with a gap relative to the peripheral surface of the half-form.

The movement of the actuators 2 enters the gripping devices, while the workers

the surfaces of the lower fingers 7 are below the surfaces of the gripped half-molds.

Due to the fact that the lower finger 7 in the process of moving I / O performs a plane-parallel movement, and the earrings 6 and 14 are parallel to each other and equal in magnitude, the upper finger 11 also moves in a plane-parallel fashion, which ensures the invariance of the angular position of the fingers 7

and 11 at their joint movement.

This property of the mechanism is also maintained when the hinge between fingers 7 and 11 is parallel to any point of the lower finger 7.

When the gripper is lifted upwards, the mold halves open from the pushers 20, after which they are clamped by the movement of the piston actuators 3. The assembly of the mold begins with the installation of the mold half of the bottom on

glueing machine pins. In this case, the grip is upside down. The unloading of the grip is performed in the reverse order. At the same time, the pins are taken out to the frame size, forming

the original Ado gap of the peripheral surfaces of the half-form (Fig. 6). Next, the grab rises and, after the flip, returns to its original position, the mold is assembled.

The use of the grips of the described construction will allow the removal of the half-molds in the limited space of the molding machine to provide the possibility of manipulations with the largest half-sizes in terms of dimensions, i.e. will expand the technological capabilities of the gripping.

In addition, the invariance of the angular position of the fingers in the process of their input-output greatly facilitates the adjustment of the grip and simplifies its operation with frequent re-adjustments under the conditions of frequent change of equipment, which is typical of most workshops for shell casting.

The possibility of increasing the gap between the molds and the gripper will increase the reliability of the gripping operation when assembling the mold, i.e., the burrs formed during shaping will not move the bottom half-form mounted on the pins of the gluing machine when the gripper is lifted upwards (Fig. 6). Greater reliability of the automatic assembly process will reduce the labor costs of manual labor on the outgoing20

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Claims (1)

making forms and will contribute to increasing productivity. Formula of the invention. Capture for removal of a set of shell half-molds according to the author. St. No. 1699700, characterized in that, in order to expand technological capabilities in terms of increasing the size of the extracted half-molds, earrings associated with the upper and lower fingers are made of the same length and are installed parallel to each other, and both fingers are fixed on the yoke using one axis .2 3 mr B Fig 2 6-.6 Fig.Z 1764773 FIG 5