SU1440961A1 - Apparatus for electrolytic working of small articles - Google Patents

Abstract

The invention relates to electroplating, in particular to devices for the liquid treatment of small parts in drums. The purpose of the invention is to increase reliability by combining the functions of oscillation and reorientation of the drum in one mechanism. The device contains a carrier frame 1, on which the drum 2 is installed with an open window, the drive and the mechanism of oscillation and reorientation of the drum 3, enclosed in a housing, gearbox 4 and motor 5. When the engine 5 is turned on, rotation through gearbox 4 is transmitted to the rocker beam a mechanism that converts rotary motion into oscillatory motion of the driver relative to the shaft. Further, the planetary mechanism converts the oscillations (L. With eff

Description

teln.-movement of the leash in the oscillatory-rotational motion of the drum 2, In the working position, the window of the drum is located at the top, the wheel is locked with a stop and a lock, therefore its rotation clockwise is impossible. The transfer of the drum to the unloading position is carried out using the planetary mechanism at the unloading position. When the entire device is lowered, the lever 26 hits the stop 29 and turns around its axis together with the cam, overcoming the resistance of the torsion spring. The cam rotates, pulls out

using the switch, the pawl that locks the wheel counter-clockwise, as a result, the drum will be oriented downward with the oscillation in this position. After unloading the drum 2, the entire device rises from the unloading position, and the system returns to its previous position with the aid of a stop 29. This design of the device allows for increased reliability and reduced dimensions by combining the functions of oscillation and reorientation in one mechanism. 4 il.

The invention relates to electroplating, in particular, to devices for the liquid treatment of small articles in drums.

The aim of the invention is to increase reliability by combining the functions of oscillation and reorientation of the drum in one mechanism.

Figure 1 shows the device, a general view; figure 2 - node I in fig. J in fig.Z - section aa in figure 2; figure 4 - section bb in figure 2.

The device contains a carrier frame 1, on which the drum 2 with an open window is installed and the mechanism 3 of its oscillation and reorientation kinematically connected with the drum, the drive consisting of a gearbox 4 and the engine 5. The mechanism 3 of oscillation and reorientation is placed in the housing 6 and comprises a crank-beam-rocking mechanism consisting of

Krivoshchip 7, the leash 8 and the rocker arm 9, connected to the planetary mechanism consisting of the leash 8 (included in the curved-rocker mechanism), - freely rotating on the shaft 10, the wheel 11 of the external gearing rigidly connected to the shaft 10, the wheel 12 of the inner an engagement that can freely rotate on the shaft 10, the gear 13, the kinematically coupling wheel 11 and 12, and secure

on axis 14. Wheel 12 has

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restrictive protrusions 15, interacting with the latch 16 of the angle of rotation fixed in the housing 6.

Wheel 12 is a ratchet wheel due to the presence on its outer cylindrical surface of the teeth for double-acting pawl 17 with a cylindrical rod 18, which is placed on axis 19 with the possibility of rotation around it. A spring 20 is pressed onto the rod 18.

On the vap 10 there is a switch 21, 22 of the dog 17 which is freely rotating around it. On axis x 23 in the cheeks 21 of the switch a sleeve 24 can be rotated into which the rod 18 of the dog 17 is loosely inserted.

Between the switch plates 22, there is a cam 25 rigidly mounted on the shaft 26, on which a torsion spring 27 is mounted, attached at one end to the cam 25, and the other to the wall of the housing 6 or to the spring twisting mechanism 28. The output end of the shaft 26 is folded; 90 and can be rotated around an axis, pushing against the stop 29 mounted at the unloading position. On the shaft 10 outside the housing 6 there is fastened the brush-shaped 30, which transmits movement to the drum 2. The stop 31 limits the angle of rotation of the cam 25 under the action of the spring 27.

3 - 14

The device works as follows.

From motor 5, through gear 4, rotational motion is applied to crank-beam mechanism 7, 8 and 9, which converts rotational motion into oscillatory motion of the driver 8 relative to the shaft 10. Far off, the planetary mechanism 8, 11, 12 and 13 converts the oscillatory motion of the driver 8 into oscillatory -the rotational movement of the working body - drum 2 relative to its axis. When the drum 2 oscillates in the working position when the window is located at the top, the wheel 12 is locked by one of the stops 15 and the latch 16, therefore its clockwise rotation is impossible. The dog 17 stops the wheel with 12 left arm counterclockwise. Since the wheel 12 is stationary, the gear 13 rolls over it, together with the wheel 11, a vibrational-rotational motion, which through the shaft 10, the tester 30 is transmitted to the drum 2. The gear 13 receives an oscillatory motion from the driver 8 and a rotational motion about its axis.

The transfer of the drum to the unloading position is carried out at the unloading position using the planetary mechanism 8, 11, 12 and 13 as follows.

When the whole device is lowered to the unloading position, the lever 26 pushes up with a curved end to the stop 29 located at the unloading position, and rotates around its axis with the cam 25 fixedly mounted on it, overcoming the resistance of the torsion spring 27.

When the cam 25 rotates, the cam 17 is coupled by means of the switch 21, 22 from its engagement with the wheel 12 and moves it through the neutral position, overcoming the resistance of the compression spring 20. The pawl 17, crossing the neutral position, is switched by the action of the spring 20, and the cam 25 can continue to rotate without hitting the switch plate 22 until the entire device is lowered to the unloading position. In this case, the switch 22 provides a flexible connection between the dog 17 and the cam 25, eliminating the possibility of breakage.

During the switching of the pawl 17, its rod 18 moves along

five

96

from 0 5

0

five

0

five

0

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one

sleeve 24 pivoting on axles .23 in the cheeks 21 of the switch 21, 22. In the switched position of the pawl 17, the right shoulder stops the wheel 12 in a clockwise direction together with the protrusion 15, and in the reverse direction the wheel 12 can rotate.

If the switching of the pawl occurred when the driver 8 moved clockwise to the left, the following occurs.

The leash 8 reaches the left end position, at the same time the drum 2 also reaches the left end position, turning counterclockwise. During the return stroke of the driver 8, the gear 13 rolls around the wheel 11, as it is kinematically associated with the loaded drum and rotates the wheel 12, which sits freely on the shaft 10. The angle of rotation of the driver 8 is equal to the angle between the projections 15 of the wheel 12. When the driver 8 occupies the extreme right position, the second protrusion 15 of the rotating wheel 12 comes into contact with the retainer 16 and the wheel 12 stops on both sides. The drum 2 at this stroke of the driver 8 skips the stroke and remains in the same position, since the wheel 11 associated with it does not rotate. When the driver 8 turns back to the left, the drum 2, rotating clockwise, will make a second, additional, turn in this direction, as a result of which the drum will be oriented with the window downward with the continuation of the oscillation in this position.

Thus, the transfer of the drum 2 from the working position to the unloading position occurs in two movements of the driver (right, left).

If switching occurs when the leash 8 moves to the right, the transfer of the drum to the unloading position occurs in four oscillations: right, left, right, left.

After the drum 2 is unloaded, everything is up; the device rises from the unloading position. In this case, the pressure of the stop 29 on the lever 26 weakens, the cam 25 returns to its previous position under the action of the twisting of the spring 27 and pushes the switch plate 22, as a result of which the dog 17 switches back and the whole process repeats in the reverse order.

The application of the invention makes it possible to increase the reliability of the device by simplifying the design and reduce its size by combining the functions of oscillation and reorientation in one mechanism.

Claims (1)

Claims An apparatus for sewing small items, comprising a drum with a window, an emphasis installed at the discharge position, an actuator and a drum reorientation unit, characterized in that, in order to increase reliability by combining the oscillation and reorientation functions of the drum in one mechanism. yy 28  P And 26 1 / IT./ // ULG 7 П / 1 -.И  I / t TI 7 th it is equipped with a crank connected to it by means of a link with a rocker and a planetary mechanism with a double-acting ratchet with a cam and with internal and external gear wheels kinematically connected with each other, and a double-sided gear is made on the outer cylindrical surface of the external gear wheel, on the switch of which is placed a cam mounted with the possibility of interaction (and with an emphasis and rigidly fixed on its shaft, on which with the possibility of interlocking A cam is mounted with a torsion spring. .З 25 bff // .