JP3291655B2 - Conveying device for holding objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holding / conveying apparatus which raises a conveyed object placed on a floor or the like, and in some cases rotates the conveyed object at a raised position.

[0002]

2. Description of the Related Art A conventional well-known holding and conveying device includes a holding member having a pair of arms, which is mounted to be vertically movable with respect to a base, for holding and conveying an object to be conveyed upward. A pair of chucking fingers provided inside each arm for nipping the object to be transported, finger driving means for driving the chucking finger in the direction of nipping the object to be transported, and rotation driving means for rotating the chucking finger; Is provided.

[0003] In a large-sized apparatus, a vertical drive means for driving the holder in the vertical direction, a finger drive means, and a rotary drive means are individually provided.
On the other hand, in the case of a small-sized device, no finger driving means is provided, and an operator manually fixes the transferred object to the arm using a band or the like.

[0004]

As described above, in the conventional large-sized apparatus, since the vertical driving means, the finger driving means, and the rotary driving means are individually provided, the structure becomes complicated and the height is increased. The price was inevitable and the miniaturization could not be achieved.

Further, in the conventional small-sized apparatus, no finger driving means is provided, and the operator has to manually fix the transferred object to the arm with a band or the like, so that the workability is very poor. SUMMARY OF THE INVENTION The present invention solves the problems of the conventional apparatus at a glance, and realizes an intermittent transfer apparatus having a finger driving unit even if it is small.

[0006]

According to a first main aspect of the present invention, there is provided a holding device which has a pair of arms and is vertically movably mounted on a base for holding and transporting an object to be transported upward. A transferred object provided with a body, a pair of chucking fingers provided inside each of the arms for holding the transferred object, and finger driving means for driving the chucking finger in the direction of holding the transferred object. In the nipping transport device of
Up / down driving means for vertically moving the holding body is provided on the base, one end of a flexible cord is connected to the up / down driving means, and the string is provided on the top of the base. The guide is guided by a guide and a guide provided on the holding body, and the other end is connected so as to pull at least one chucking finger in the holding direction.

[0007] The second main invention is one in which the following components are added to the first main invention. That is,
The string is connected to only one chucking finger,
The other chucking finger is provided with a rotation driving means for rotating and driving the other chucking finger. A fixed hydraulic cylinder is provided, and when the holding body rises to a predetermined position, hydraulic pressure is supplied to the hydraulic cylinder, the rack moves, the pinion rotates, and the chucking finger is driven to rotate. Is a holding and conveying device.

[0008]

According to the first main invention, when the vertical driving means is operated in the upward direction in a state where the article to be transported is located between the two chucking fingers, the string is pulled by the vertical driving means. The string is tensioned and its traction is transmitted to the chucking fingers. Then, the chucking finger is pulled in the direction of holding the transferred object and is driven in the holding direction.

However, until the chucking fingers clamp the object to be conveyed, no lifting force acts on the holder, and the holder itself is in a stationary state. Then, when the chucking finger grips the object to be conveyed and the chucking finger does not move any more, a tension for raising the holding body is applied to the cord-like body, and the holding body is It will rise while holding the transported object.

That is, when the vertical driving means is operated, first, the chucking finger clamps the object to be conveyed, and as soon as the clamping operation is completed, the holding body automatically starts to rise, and the object to be conveyed is lifted. become.

In the second main invention, when the holding body is raised to a certain position while holding the object to be conveyed, hydraulic pressure is supplied to the hydraulic cylinder in which the rack is fixed to the piston rod, so that the rack moves. Then, the pinion rotates.

When the pinion rotates, the chucking fingers that hold the object to be conveyed also rotate, and the object to be conveyed also rotates. That is, when the holder lifts the transported object to the predetermined position, the transported object rotates about the rotation axis extending in the horizontal direction.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention.
2 is a side view of the entire apparatus, FIG. 2 is a plan view, FIG. 3 is a partial perspective view, FIG. 4 is a perspective view of a wire portion, and FIG. 5 is a partially enlarged plan view.

In these figures, reference numeral 1 denotes a base, and a U-shaped leg 2 is fixedly provided at the lower end thereof.
Three and four pairs of wheels are rotatably mounted. Base 1
The wheel 3 on the near side is a turning wheel, and the wheel 4 on the far side is a fixed wheel.

A rectangular cylindrical holder 5 is vertically movably fitted to the base 1. A pair of arms 6, 7 having a generally U-shape are fixed on the front side of the holder 5. Has been established.

Inside each arm 6, 7 near the free end, a pair of chucking fingers 8, 9 opposed to each other are provided.
Are mounted rotatably about a rotation axis extending in the horizontal direction. The chucking fingers 8 and 9 may have an arc shape, or may have a flat plate shape depending on the shape of the transferred object.

One chucking finger 9 is shown in FIG.
As shown in FIG. 5, a support shaft 11 rotatably and slidably inserted into a bearing 10 fixed to one arm 7.
, And is mounted so as to be swingable on a shaft 12.

A step is formed at the rear end of the support shaft 11. Outside the arm 7 (chucking finger 9
A finger driving plate 13 is provided on the side opposite to the mounting side. A flange 14 into which the step portion of the support shaft 11 is fitted is mounted inside the finger driving plate 13. Drive plate 13, flange 14, and support shaft 11
Are integrally fixed by bolts 15.

A chucking finger 9 is provided between the inside of the finger driving plate 13 and the outside of the arm 7.
Is inserted through a compression coil spring 16 for urging in the direction of arrow B.

One end of a wire 17 as a cord is connected near one end of the finger driving plate 13. When the wire 17 is pulled in the direction of arrow A, the finger driving plate 13 also moves in the direction of arrow. The chucking finger 9 moves in the direction A, and the chucking finger 9 also moves in the direction of the arrow A (the direction in which the object is held).

The finger driving plate 13 and the wire 1
7, the finger driving means is constituted by the compression coil spring 16 and the like.

As shown in FIG. 4, a hydraulic cylinder 18 as a vertical drive means is provided upright inside the base 1, and the other end of the wire 17 is connected to a piston rod 19 of the hydraulic cylinder 18. ing.

A first pulley 20 having a horizontal axis extending in the horizontal direction is rotatably provided near the upper end of the base 1, and a second pulley 21 having a horizontal axis extending in the horizontal direction is mounted on the holder 5. It is provided freely.

A third pulley 22 whose rotation axis extends in the vertical direction is rotatably provided outside the arm 7, and the rotation axis also extends in the vicinity of the finger driving plate 13 in the vertical direction. A fourth pulley 23 is provided rotatably.

The wire 17 is connected to the finger drive plate 13 from the piston rod 19 of the hydraulic cylinder 18 via the first pulley 20, the second pulley 21, the third pulley 22, and the fourth pulley 23. I have. The wire 17 is not limited to a single wire, and the wire and the chain may be connected in the middle.

A pinion 24 is fixed to the rotation shaft of the chucking finger 8 rotatably mounted on the other arm 6 outside the arm 6.

A first arm 6 is provided outside the other arm 6.
The small hydraulic cylinder 25 is provided, and a rack 27 that meshes with the pinion 24 is fixed to an end of a piston rod 26 of the small hydraulic cylinder 25.

The rack 27 is provided with a spring (not shown) for urging the rack 27 in the direction of the small hydraulic cylinder 25. In order to further increase the urging force of this spring, a holding member is provided. In connection with the downward movement of 5, a wire for pulling the spring may be provided.

A second small hydraulic cylinder 28 is also mounted on the side wall of the holder 5 so that its piston rod 29 faces upward (shown only in FIG. 3).
Small hydraulic cylinder 25 and second small hydraulic cylinder 28
Are connected by a hydraulic pipe 30.

Then, the second small hydraulic cylinder 28
When the piston rod 29 moves downward, that is, when the hydraulic pressure of the second small hydraulic cylinder 28 is supplied to the first small hydraulic cylinder 25 through the hydraulic pipe 30, the first small hydraulic cylinder 25 The piston rod 26 protrudes from the first small hydraulic cylinder 25 and moves to the rack 2.
7 moves, and the pinion 24 rotates.

Then, the chucking finger 8 also rotates about the rotation axis extending in the horizontal direction.

A stopper 36 for regulating the upper limit of the holder 5 is mounted on the side wall of the base 1 so as to be adjustable. The stopper 36 is provided at a position where the upper end of the piston rod 29 of the second small hydraulic cylinder 28 abuts.

As shown in FIG. 1, a handle 31 for moving the whole apparatus and a hydraulic pump 33 having a pedal 32 for supplying hydraulic pressure to the hydraulic cylinder 18 are provided behind the base 1. I have. Note that a motor may be provided instead of the pedal 32.

Further, a lock screw 34 (FIG. 3) for temporarily locking the holder 5 to the base 1 is mounted on the holder 5.

When transporting a cylindrical drum 35 as an object to be transported, first, an operator operates the handle 3 of the apparatus.
1 and the apparatus is moved so that the drum 35 is located at the center of both chucking fingers 8 and 9.

Next, when the hydraulic pressure is supplied to the hydraulic cylinder 18 by depressing the pedal 32 a plurality of times, the piston rod 19 descends in the direction of arrow A, the wire 17 is also pulled in the direction of arrow A, and the finger driving plate 13 Are moved in the direction of arrow A while compressing, and the chucking finger 9 is moved in the direction of holding the drum 35 accordingly. Therefore, the drum 35 has two chucking fingers 8,
9 sandwiches the side wall.

At this stage, the tension applied to the wire 17 is in opposition to the elastic force of the compression coil spring 16.

When the pedal 32 is further depressed, the chucking finger 9 is prevented from moving in the direction of arrow A by the drum 35, so that a strong tension is applied to the wire 17.

Since the holding body 5 is mounted on the base 1 so as to be vertically movable, the first pulley 20 and the second
Only the distance from the pulley 21 expands and contracts.

Therefore, even after the chucking fingers 8 and 9 sandwich the drum 35, if a strong tension is applied to the wire 17, the distance between the first pulley 20 and the second pulley 21 is reduced. The holder 5 moves. That is, the holder 5
Rises along the base 1 together with the drums 35 and 1.

In this case, the greater the weight of the drum 35, the greater the tension applied to the wire I7, and the more powerful the drum 35 can hold the chucking fingers 8, 9. Will be pinched.

Then, the holder 5 is raised to a predetermined position,
The piston rod 29 of the second small hydraulic cylinder 28
When the upper end of the second hydraulic cylinder 28 comes into contact with the stopper 36, the holding body 5 stops and the second small hydraulic cylinder 28
Is supplied to a first small hydraulic cylinder 25 through a hydraulic pipe 30, and the first small hydraulic cylinder 25
Of the first small hydraulic cylinder 25
The rack 27 moves from the pinion 24
Rotates.

Then, the chucking finger 8 also rotates about the rotation axis extending in the horizontal direction, and the drum can 3
5 can also be rotated and inverted so that its contents can flow out.

After the work is completed, when the hydraulic pressure of the hydraulic cylinder 18 is gradually released, the holder 5 descends along the base 1, and the piston rod 26 of the first small hydraulic cylinder 25 is moved by a spring or the like. The small hydraulic cylinder 25
And the pinion 24 also reverses, and the drum 35 also reverses and returns to the initial position.

Then, when the drum 35 reaches the floor, the tension of the wire 17 also disappears and the finger driving plate 13
Is moved in the direction of arrow B by the elastic force of the compression coil spring 16. Accordingly, the drum 35 is released from the clamping force of the two chucking fingers 8 and 9.

In order to release the drum 35 from the clamping force of the two chucking fingers 8 and 9 in a state where the drum 35 has been raised to a predetermined position, the drum screw 35 is held by the lock screw 34 with the holder 5 at the predetermined position. What is necessary is just to fix the body 5 to the base 1.

Then, the weight of the drum 35 on the wire 17 is reduced, the tension of the wire 17 is also eliminated, and the drum 35 is released from the clamping force of the chucking fingers 8 and 9 in the same manner as described above.

[0048]

According to the first main invention, in the state where the object to be transported is located between the two chucking fingers, the chucking finger first clamps the object to be transported by simply operating the vertical driving means. As soon as the holding operation is completed, the holding body automatically starts to rise, and the transported object is lifted. Therefore, the transported object can be held and raised with a simple structure.

In the second main invention, when the holding body rises to a certain position while holding the object to be conveyed, the hydraulic pressure is supplied to the hydraulic cylinder in which the rack is fixed to the piston rod. Moves and the pinion rotates,
The transferred object also rotates.

Therefore, the transported object can be raised and rotated with a simple structure. That is, each of the inventions has a small and simple structure and satisfies the functions of a large-sized apparatus.

[Brief description of the drawings]

FIG. 1 is a side view of one embodiment of the present invention.

FIG. 2 is a plan view of one embodiment of the present invention.

FIG. 3 is a partial perspective view of one embodiment of the present invention.

FIG. 4 is a partial perspective view of a wire portion according to one embodiment of the present invention.

FIG. 5 is a partially enlarged plan view of one embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base 2 leg 3 wheel 4 wheel 5 holder 6 arm 7 arm 8 chucking finger 9 chucking finger 10 bearing 11 support shaft 12 shaft 13 finger driving plate 14 flange 15 bolt 16 compression coil spring 17 wire 18 hydraulic cylinder 19 piston rod Reference Signs List 20 first pulley 21 second pulley 22 third pulley 23 fourth pulley 24 pinion 25 first small hydraulic cylinder 26 piston rod 27 rack 28 second small hydraulic cylinder 29 piston rod 30 hydraulic pipe 31 handle 32 pedal 33 hydraulic pump 34 Lock screw 35 Drum can 36 Stopper

Claims (10)

(57) [Claims] 1. A holding body, which has a pair of arms and is mounted on a base so as to be vertically movable, for holding an object to be conveyed and conveying it upward, and a carrier provided inside each of the arms. In an apparatus for holding and transporting a transferred object, a pair of chucking fingers for holding the transferred object and finger driving means for driving the chucking finger in the direction of holding the transferred object are provided. Up and down driving means for moving up and down is provided, one end of a flexible cord is connected to the up and down driving means, and the string is attached to a guide and the holder provided on an upper portion of the base. A gripping / conveying device for an object to be conveyed, which is guided by a guide provided, and the other end is connected so as to pull at least one chucking finger in a gripping direction. 2. A first pulley having a rotation axis extending in a horizontal direction is rotatably provided near an upper end portion of the base, and a second pulley having a rotation axis extending in a horizontal direction is rotatably provided on the holder. 2. The apparatus according to claim 1, wherein the string-like body is provided and connected to the chucking finger from the driving means via the first pulley and the second pulley. 3. A third pulley and a fourth pulley whose rotation axis extends in the vertical direction are rotatably provided on the holding body or the arm, and the string-like body is provided with a first pulley, a second pulley, 3. The apparatus according to claim 2, which is connected to the chucking finger via a third pulley and a fourth pulley. 4. The chucking finger to which the other end of the cord is connected is provided with a resilient member for urging the chucking finger in a direction opposite to the holding direction. An apparatus for nipping and conveying an object to be conveyed according to any one of the above. 5. An apparatus according to claim 1, wherein said vertical drive means is a hydraulic cylinder. 6. An apparatus according to claim 1, further comprising a locking means for locking the holding body to the base. 7. The transferred object according to claim 1, wherein the chucking finger is mounted on the arm so as to be rotatable about a rotation axis extending in a horizontal direction. Nipping transport device. 8. The apparatus according to claim 7, wherein the string-shaped body is connected to only one of the chucking fingers, and the other chucking finger is provided with rotation driving means for rotating and driving the other chucking finger. Conveyance holding device 9. A hydraulic cylinder in which a pinion is fixed to the other chucking finger, a rack meshing with the pinion is fixed to a piston rod on the other arm, and the holding body is moved to a predetermined position. 9. The apparatus according to claim 8, wherein a hydraulic pressure is supplied to the hydraulic cylinder to move the rack, the pinion rotates, and the chucking finger is driven to rotate. 10. The apparatus according to claim 1, wherein a wheel is rotatably mounted on a bottom of the base.