SU1539081A1 - Power press - Google Patents

Abstract

The invention relates to forging equipment, in particular, to the design of mechanical presses. The purpose of the invention is to improve the operating conditions and increase the productivity of the presses by reducing the changeover time. To adjust the stroke of the slide, energy is supplied to the rod cavity of the power cylinder 15. As a result, its moving element 16 is moved, the latch 18 of which displaces the retaining clip 9 to the right, its outer gear 10 coming out of engagement with the internal gear 8 of the eccentric bushing 7 and the wheel 13 of engagement with gear 14. Simultaneously, the movable element 16 rotates the lever 20, which moves the finger 21 to the left. The latter enters the groove 23 of the connecting rod 6, locks it relative to the bed 1. Then away from the electric motor 28, the eccentric block 3 and the eccentric sleeve 7 rotate. In this case, their total eccentricity changes, i.e., the slide stroke at a constant position of the shaft 12 of the control device and, consequently, the means of mechanization. 2 Il.

Description

This moves its movable element 16, the latch 18 of which displaces to the right the retaining clip 9s, withdrawing its outer gear 10 from engagement with the internal gear 8 of the eccentric bushing 7 and the wheel 13 from engaging with gear 14, simultaneously the movable element 16 rotates the lever

20

5 which moves the finger to the left

21. The latter is included in the groove 23 of the connecting rod

6, its stopper relative to the frame 1. Then, from the electric motor 28, the eccentric unit 3 and the eccentric sleeve are turned

7. At the same time, their total eccentricity changes, i.e. the slide stroke at the unchanged position of the shaft 12 of the equipment and, consequently, the means of mechanization. 2 Il.

The invention relates to mechanical engineering, in particular to the design of forging equipment.

The purpose of the invention is to improve the conditions of operation and increase productivity by reducing retooling time.

Figure 1 shows the press, a general view; Fig. 02 is a diagram of the change in the total eccentricity of the sleeve and the block.

The press contains an eccentric unit 3 mounted on frame 1, fixed in frame 1 with two outer rings A and 5, placed in the head of a connecting rod 6 with an eccentric block 3 covered by an eccentric sleeve 7 with an internal gear ring 8, a retaining clip 9 with an external 10 and an internal 11 toothed rim w, installed with the possibility of engagement with its outer rim 10 with the inner rim 8 of the eccentric bushing 7, and the inner rim 11 with the outer rim 4 of the eccentric block Ze, the serrated pair of the drive shaft 12 of the control unit (not rendered) as a gear 13 and fixed to the shaft 12 the pinion 14.

The press also contains a fixing unit for the connecting rod 6 with respect to the frame 1 and a movement actuator of the locking clip 9, made in the form of a power cylinder with the housing 15 fixed in the base 1, the movable element 16 with the groove 17 and the latch 18 mounted on the base 1 kroner matte 19, articulated With the last lever 20, placed in the frame 1 parallel to the movable element 16 finger 21 with a groove 22.

The eccentric sleeve 7 is made with an eccentricity e, a large ec20

25

thirty

35

40

45

50

55

centeringit. er eccentric block 3. The rod 6 has a groove 23, the wheel 13 is fixed on the lock holder 9. The lever 20 is installed at one end in the groove 22 of the finger 21, and the other end is in the slot 17 of the movable element 16. The latch 18 is mounted between the ends of the wheel 13 and the lock sleeves 9. The outer ring gear 5 is engaged with the gear 24 mounted on the shaft 25, on which the flywheel 26 is also connected, connected with a wedge transmission 27 with the electric motor 28,

The press works as follows.

The rotation from the electric motor 28 via a V-belt transmission 27 through the flywheel 26 is transmitted to the shaft 25 with the gear 24, from which rotation is transmitted to the outer gear 5 of the eccentric unit 3. Together with the latter, the retaining ring 9 and the eccentric sleeve 7, from which the connecting rod 6 is rotated telling the reciprocating movement of the slider (not shown). Simultaneously, from the locking ring 9, the rotation is transmitted to the wheel 13 and gear 14, which causes the shaft 12 of the control apparatus to rotate.

To adjust the stroke of the slide, energy is delivered to the cavity of the power cylinder, as a result of which its movable element 16 moves, the latch 18 of which displaces the retaining clip 9 to the right (according to the drawing), withdrawing its outer gear 10 from engagement with the internal gear 8 of the eccentric bushing 7 and the wheel 13 is engaged with the gear 14. At the same time, the movable element 16 rotates the lever 203 which moves

left (according to the drawing) finger 21. The latter enters the groove 23 of the connecting rod 6, its stopper relative to the frame 1.

Then from the electric motor 28 pro. comes, the turn of the eccentric block 3 at the angle H g. When the connecting rod 6 is locked, the eccentric bushing 7 also rotates through a certain angle T, as a result of which the total total eccentricity changes, i.e. slide stroke. In this case, the total eccentricity vector always changes along the vertical axis of the connecting rod 6. In the process of adjusting the stroke of the slide, the shaft 12 does not rotate, i.e. the commander does not give commands to control press mechanization tools (not shown), which remain in their original position.

The energy carrier is then fed into the piston cavity of the power cylinder, resulting in the coupling of the gear rims 10 and 11 of the lock casing 9 with the gear rims 8 and 4 of the eccentric bushing 7 and the eccentric block 3, the pin 21 from the groove 23 of the connecting rod 6 and the wheel 13 gear 14. Press again ready to go.

In Fig. 2, the vectors e., E are denoted respectively the eccentricities of the eccentric sleeve 7 and the eccentric unit 3; Y - vertical axis

connecting rod press.

i

Since e L e ,, the total eccentricity is

e

e -cos 4+ e2 cos Q1

where H (- the angle of rotation of the eccentric sleeve;

Ј | 2 - the angle of rotation of the eccentric block.

At 0, 0е, е е (+ еЈ - maximum total eccentricity.

At 180 °, q 0 °, e e4-its is the minimum total eccentricity. Technical and economic effect is ensured by improving the

five

0

five

0

five

0

five

0

operation and increase productivity by reducing retooling time.

Claims (1)

 Invention Formula A mechanical press containing a drive eccentric unit mounted on a base frame with two external gear rims, an eccentric sleeve with an internal gear ring with an internal crown gear, a retaining clip with external and internal gear crowns mounted with an external crown mounted on a rod frame. the possibility of engaging with its outer crown with the inner crown of the eccentric bushing, and the inner crown with the corresponding outer crown of the eccentric block, as well as a gear drive pair a team of a machine in the form of a wheel and gear mounted on the shaft, characterized in that., in order to improve the operating conditions and increase productivity by reducing the time for retooling, it is equipped with a connecting rod fixing unit relative to the base and driving the movement of the retaining clip, made in the form a power cylinder with a housing fixed in the frame and a movable element with a groove and a latch mounted on the frame of the bracket hinged to the articulated arm with the last lever, as well as the parallel placed in the frame On the movable element of the power cylinder of a finger with a groove, the eccentric bushing is made with eccentricity, a large eccentricity of the eccentric block, and the connecting rod has a groove for accommodating a finger, the said wheel is fixed on the lock cage, while the lever is fixed at one end of the finger groove, and the other, in the groove of the movable element, the latch of the latter is mounted with the possibility of interaction with the corresponding end faces of the wheel and the retaining clip. FIG. 2