JPS6160728B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for adjusting the height of a transfer bar of a transfer feeder.

A conventional transfer feeder transports a material by lifting/down, advancing return, clamping, and unclamping a pair of transfer bars, and the height of the pair of transfer bars is constant.

For this reason, the lower mold of the press must be manufactured to match the height of the transfer bar, which makes manufacturing the mold cumbersome and increases costs.

The present invention has been made in view of the above circumstances, and its object is to provide a transfer bar height adjustment device for a transfer feeder, which allows the height of the transfer bar to be arbitrarily adjusted.

Embodiments of the present invention will be described below with reference to the drawings.

The lift carrier 1 is provided with a pair of clamp carriers 2, 2 that are movable in the left-right direction (arrow x), and each clamp carrier 2 is provided with a pair of left and right transfer bars 3, 3 that are movable in the front-rear direction (arrow Y). It is provided.

4 is a camshaft that is rotationally driven;
is equipped with a lift cam 5 and a feed cam 6,
A lift lever 7 is attached to the lift cam 5.
A horizontal rack rod 8 is pivotally connected to the lift lever 7, and a vertical rack rod 10 is engaged with the rack rod 8 via a pinion 9. The lift carrier 1 is connected to the vertical rack rod 10. A feed lever 11 is in contact with the feed cam 6, and the feed lever 11 is connected to a feed carrier 13 which is connected to the transfer lever 3 via a feed pin 12 so as to be vertically movable.

In addition, the camshaft 4 has a three-dimensional clamp cam 14.
and a two-dimensional clamp cam 15 are provided movably in the axial direction, and either one of the clamp cams 1
4 and 15 are in contact with a clamp lever 16, and the clamp lever 16 is linked to a horizontal rack rod 21 via a horizontal rack rod 17, a pinion 18, a shaft 19, and a pinion 20, and the horizontal rack rod 21 is connected to one of the clamp carriers. Connected to rear 2. One clamp carrier 2 and the other clamp carrier 2' are interlocked via a pair of rack rods 22, 23 and a pinion 24, and when one clamp carrier 2 moves, the other clamp carrier 2' moves in synchronization with the other clamp carrier 2. ′ moves in the opposite direction.

Reference numerals 25 and 26 denote air cylinders that urge each clamp carrier 2 and 2' in the clamping direction.

The horizontal rack lever 8 and the lift lever 7 are connected via an adjusting device A according to the present invention.

That is, the lift lever 7 has a U-shaped yoke 3.
A circular rod 33 having a small diameter portion 32 is fixed to the yoke 30, and a ring body 34 is rotatably fitted into the small diameter portion 32. The inner periphery of one end of the cylindrical body 35 is fixedly attached to the cylindrical body 35 .

The cylindrical body 35 is a guide cylinder 3 fixedly installed on the fixed side.
A gear 37 is fixed to the other end of the cylindrical body 35, and a cylindrical stopper 38 is fixedly installed inside the cylindrical body 35. A rod 39 is inserted through the rod 39, and one end of the rod 39 has a protrusion 40 against which the stopper 38 abuts.
is fixedly installed, and the horizontal rack rod 8 is fixedly installed at the other end via flanges 41 and 42.

As shown in FIG. 3, the stopper 38 has first to fifth step portions 44 ₁ to 44 ₅ wider than the projection 40 on the peripheral wall of the cylindrical body 43 facing each other in the radial direction and spaced apart in the longitudinal direction. The protrusion 40 is
is adapted to abut across the opposing step portions 44, 44.

A pair of guide rails 45, 45 are fixedly installed on both sides of the rod 39 in the longitudinal direction, and a hook 47 is slidably provided on the pair of guide rails 45, 45 via a roller 46. The hook 47 has a bifurcated shape so as to come into contact with the other side surface 42a of the flange 42, and is connected to a piston rod 49 of a forced down cylinder 48 fixed on the fixed side.
are connected.

On the other hand, a wide pinion 51 rotatably supported via a bracket 50 meshes with the gear 37, and a vertical rack rod 52 meshes with the pinion 51. A piston rod 54 of the cylinder 53 is connected to the upper end of the vertical rack rod 52, and a rod body 55 is connected to the upper end of the vertical rack rod 52 and is supported vertically and movably by a pair of upper and lower brackets 54, 54 fixed to the mounting plate 56. 56 has first, second, third, fourth, and fifth height detection switches 57 ₁ , 57 ₂ , 57 ₃ , 57 ₄ , and 57 ₅ fixedly arranged at vertically shifted positions. 55 is formed with a stepped portion 55a for turning each switch 57 ON, and the rod 55 has first, second, third, fourth, and fifth holes 58 ₁ , 58 ₂ , for locking.
58 ₃ , 58 ₄ , 58 ₅ are bored at the same intervals as the switch 57 and shifted vertically, and the holes 5
A lock pin 59 that fits into the lock cylinder 60 is provided in the mounting plate 56 so as to be freely removable and removable, and the lock pin 59 is connected to a piston rod 61 of a lock cylinder 60.

62 ₁ and 62 ₂ are switches that detect the expansion and contraction of the piston rod 61, and detect whether or not the rod body 55 is locked.

A locking piece 63 is provided opposite the toothed part 8a of the horizontal locking lever 8, and the locking piece 63 is connected to the piston rod 65 of the lock cylinder 64 so that it can freely move up and down, and engages with the toothed part 8a to horizontally move the locking piece 63. It is movable into a lock position where the rack rod 8 is prevented from moving, and an unlocked position where it is spaced apart from the toothed portion 8a and inhibits the movement of the lateral rack rod 8.

Reference numeral 67 denotes a two-dimensional/three-dimensional switching cylinder, whose piston rod 68 faces a brat 69 fixed to the lift lever 7.

The horizontal rack lever 8 is kept biased to move toward the lift side (that is, to the right in the figure) by an air cylinder 70.

When the lift lever 7 is swung in the direction of arrow A by rotating the camshaft 4 and the lift cam 5, the cylindrical body 35, the stepped portion 44 of the stopper 38,
The horizontal rack lever 8 is moved in the direction of the arrow B against the air cylinder 70 via the protrusion 40 and the rod 39.

As a result, the lift carrier 1 is lowered via the pinion 9 and the vertical rack rod 10, and the pair of transfer bars 3 are lowered.

Then, by further rotating the camshaft 4, the lift cam 5
When the lift lever 7 is further rotated and the lift lever 7 is swung in the direction of arrow C, the stopper 38 moves in the direction of arrow D, and the projection 40 and the stepped portion 44 of the stopper 38 are separated.

As a result, the horizontal rack lever 8 is connected to the air cylinder 70.
The lift carrier 1 is moved in the direction of the arrow H, and the lift carrier 1 is raised via the pinion 9 and the vertical rack rod 10 to lift the pair of transfer bars 3, 3.

Here, the swing angle of the lift lever 7 is constant, and the strokes of the cylindrical body 35 and the stopper 38 are constant, so the stroke of the lateral rack lever 8 is also constant, so that the stroke of the transfer lever 3 is constant.

Therefore, when the lift lever 7 swings in the direction of arrow C by the maximum swing angle, the lift carrier 1 remains at a constant raised position, and the height of the transfer lever 3 also remains constant.

Next, the operation of adjusting the height of the transfer bar 3 will be explained.

When the piston rod 49 of the forced down cylinder 48 is retracted and the hook 47 is slid in the direction of arrow x along the guide rail 45, the protrusion 40 moves to the stopper 38.
It separates from the stepped portion 44 and comes out of the stopper 38.

In this state, the vertical rack lever 52 is moved up and down by the piston rod 54 of the adjusting cylinder 53, and the stopper 3 is
8 to rotate the stepped portion 44 facing the protrusion 40,
For example, from the fifth step section ₄₄₅ to the fourth step section 44 in FIG.
Change to ₄ .

Then, when the piston rod 49 of the forced down cylinder 48 is extended and the hook 47 is moved in the direction of the arrow y', the horizontal rack rod 8 is urged to move by the air cylinder 70, so that the protrusion 40 moves to four stages. Part 4
4 Contact with ₄ .

As a result, the fifth step portion ₄₄₅ and the fourth step portion 44
Since the amount of movement of the lateral rack lever 8 is reduced by the difference _l1 in step ₄ , the upward stroke of the lift carrier 1 is reduced and the height of the transfer bar 3 is reduced.

In addition, the transfer lever height at this time is 1st to 5th.
Switch any one of switches 57 ₁ to 57 ₅ to rod 5
5 is detected by turning on the stepped portion 55a, and the movement of the vertical rack rod 52 is locked by fitting the lock pin 59 into the lock hole 58 formed in the rod body 55 by the lock cylinder 60, The stopper 38 is prevented from rotating for some reason.

Also, the above operation is for a three-dimensional transfer feeder in which the transfer bar 3 performs lift-down, clamp-unclamp, and advance return.If necessary, you may want to switch to a two-dimensional transfer feeder that does not lift-down. There is.

In that case, first, the lock cylinder 64 engages the lock piece 63 with the teeth 8a of the horizontal rack rod 8 to lock the movement of the horizontal rack rod 8.

In this state, the piston rod 68 of the switching cylinder 67
is extended to swing the lift lever 7 in the direction of arrow A to separate it from the lift cam 5.

In this way, even if the camshaft 4 is rotated, the lift lever 7 is not swung by the lift cam, so the transfer lever 3 becomes a two-dimensional transfer feeder without being lifted or down.

The present invention is as described above, and when the lift lever 7 is swung, any one of the steps formed on the first cylindrical body 43 comes into contact with the protrusion 40 and slides the horizontal rack lever 8, thereby causing the lift carrier to move. 1 can move up and down to move the transfer bar 3 up and down.

Further, the horizontal rack lever 8 is moved toward the lift lever 7 side by the hook 47, and the second cylindrical body 35
When the first cylindrical body 43 is rotated, the protrusion 40 of the horizontal rack lever 8 faces one of the steps formed on the first cylindrical body 43, so the lift lever 7 is swung. When the second cylindrical body 35 is moved, the distance traveled until the protrusion 40 and the stepped portion come into contact differs by the distance in the longitudinal direction of the stepped portion. The height of the transfer bar 3 can be adjusted by changing the height of the transfer bar 3.

Further, since the second cylindrical body 35 is rotated by the adjustment cylinder 53 and the hook 47 is moved by the cylinder, it is possible to automatically rotate the second cylindrical body 35 and move the hook 47. The height of the transfer bar 3 can be automatically and easily adjusted.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of an embodiment of the present invention, FIG. 2 is a perspective view of essential parts, and FIG. 3 is a perspective view of a stopper. 1 is lift carrier, 3 is transfer lever, 5
is the lift cam, and 7 is the lift lever.

Claims (1)

[Claims] 1. The lift carrier 1 supporting the transfer bar 3 is connected to the horizontal rack rod 8 via the vertical rack rod 10 and the pinion 9, and the end of the horizontal rack rod 8 is connected to the peripheral wall with a plurality of stepped portions at intervals in the longitudinal direction. A protrusion 40 that faces relatively slidably in the longitudinal direction within the first cylindrical body 43 formed by placing the protrusion 40 thereon and abuts against the stepped portion thereof.
The first cylindrical body 43 is connected to the second cylindrical body 35, and the second cylindrical body 35 is rotatably attached to the yoke 30 pivotally connected to the lift lever 7. A hook 47 is moved by a cylinder that engages a gear 37 fixed to the cylindrical body 35 of No. 2 with a wide pinion 51 rotated by an adjustment cylinder 53, and further moves the horizontal rack rod 8 toward the lift lever 7. A transfer feeder height adjusting device for a transfer feeder, characterized in that it is provided with a transfer feeder.