JP4271759B2 - Hanging conveyor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suspension conveying device used for conveying a large number of conveyed objects in a factory, a warehouse, or the like, a so-called overhead conveyor, and more particularly to installation of a workstation in such an overhead conveyor.
[0002]
[Prior art]
As a conventional hanging transfer device, there is one described in Japanese Patent Laid-Open No. 10-291626. In this apparatus, a branch rail directed to the side of the drive shaft serving as a transport path is provided, and a trolley carrying a transported object is transferred to the branch rail and carried to a workstation on the side of the drive shaft.
[0003]
[Problems to be solved by the invention]
However, this prior art requires space for branch rails and workstations, so that space efficiency in factories and warehouses is poor.
[0004]
In view of the above problems, an object of the present invention is to improve space efficiency by temporarily stopping a trolley on which a transported article is placed on a transport path and using the place as a workstation.
[0005]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) A trolley that is arranged along the conveyance path and is driven to rotate around an axis, and a trolley suspended on the drive shaft via a traveling wheel that contacts at an oblique angle with respect to the rotational direction of the drive shaft. And a transporting object holding unit suspended and supported by the trolley, wherein the trolley is propelled along the drive shaft by the rotation of the drive shaft.
A plurality of trolleys suspended on the drive shaft support the front and rear of the transported object holding unit, and a separation wheel is pivotally supported on the upper portion of the trolley, separated from the traveling wheel , and the tip is reverse-shaped. The extension end with one end extending horizontally is pivotally attached to a height position that is slightly below the separation wheel, and the tip can be rotated upward about this pivot attachment point. the separation rail to its length, as a separation wheel lockable length of a plurality of trolley which are connected to each other, above the drive shaft, vertically movable arranged by the elevating device, before Symbol The separation wheel of the trolley that has been advanced onto the separation rail engages with the separation rail ascending, thereby releasing the trolley from suspension on the drive shaft.
[000 6 ]
(2) In the above item (1), a taper portion having a reduced diameter is formed at the tip of the separation rail.
[000 7 ]
(3) rotatably supported in the above (1) or (2) sections disposed an air cylinder in the upper part of the lifting device which is disposed to protrude above the drive shaft, the actuating member to the piston rod of the air cylinder The separation rail is supported at the lower end of the operating member.
[000 8 ]
(4) In any one of the above items (1) to ( 3 ), the piston rod of the air cylinder is pivotally supported on the fixed portion on the lifting device arranged at a low position on the side of the drive shaft, and the cylinder body of the air cylinder is A fixed part is slidably supported and connected to a separation rail.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a conceptual view of a part of an overhead conveyor system which is an embodiment of a suspended conveying device according to the present invention. A drive shaft (1a) is incorporated in the carrier beam (1) suspended and supported from the ceiling so as to form a conveyance path in the factory, and a set of trolleys suspended on the drive shaft (1a). By (2), the conveyed product holding part (3) is supported in the front and back.
[0010]
In order to rotationally drive the drive shaft (1a), a belt-type rotational drive device (4) is attached to the carrier beam (1), and an oblique angle with respect to the drive shaft rotational direction as shown in FIG. A traveling wheel (5) having a trolley is provided in the middle of the trolley (2), these traveling wheels (5) are brought into contact with the drive shaft (1a), and the trolley (2) is suspended from the drive shaft (1a). I'm allowed.
Moreover, the separation wheel (6) is provided in the upper part of the trolley (2).
[0011]
The drive shaft (1a) forming the conveyance path is separated and cascaded for each section, and is rotationally driven by the rotation driving device for each section.
[0012]
A separation rail (7) called a gravity rail is disposed at a place where a work station is provided in the transport path.
The separation rail (7) is a member having a shape in which the tip portion is bent in an inverted letter shape and extends long in the horizontal direction from one end thereof. The length of the separation rail (7) suspends the conveyed product holding portion (3). It is long enough to place a pair of supporting trolleys (2).
[0013]
As shown in FIG. 3, the extended end of the separation rail (7) is attached to the carrier beam (1), and the attachment member (8) protruding upward is separated from the trolley (2). It is pivotally mounted at a height position slightly below the wheel (6), and the inverted-H-shaped tip can turn upward about this pivot point.
[0014]
An elevating device (9) that rotates upwardly of the separation rail (7) includes an air cylinder (10) that is pivotally attached to the elevating device casing by a pin (14) and positioned above the separation rail (7); And an actuating member (11) pivotally attached to the piston rod (10a). The actuating member (11) is bent in a U shape, and a separation rail (7) is attached to the upper side of the lower arm (see FIG. 4).
[0015]
The air cylinder (10) is connected to the solenoid valve (13) by two pipes (12). This circuit is shown in FIG.
[0016]
When the dog of the preceding trolley (2) kicks the sensing rod (15a) of the microswitch (15) shown in FIG. 4, the solenoid valve (13) occupies the position shown in FIG. ) To the lower chamber of the air cylinder (10), the piston (10a) and hence the actuating member (11) move upward, and the separation rail (7) rises. At this time, the separation wheel (6) of the preceding trolley (2) is caught in the reverse-shaped recess of the separation rail (7).
As a result, since the separation wheels (6) of the pair of trolleys (2) are all lifted upward, the traveling wheel (5) is detached from the drive shaft (1a) and is supported by the trolley (2) and thereby. The transported object holding unit (3) is stopped from traveling.
[0017]
Therefore, the point where the separation rail (7) is provided serves as a work station, where various operations can be performed on the conveyed product.
[0018]
After the work is completed, manually operate the solenoid valve (13) to supply air to the upper chamber of the air cylinder (10) and move the piston (10a), and hence the operating member (11), downward. The separation wheel (6) of (2) is separated from the separation rail (7). As a result, the traveling wheel (5) is again engaged with the drive shaft (1a), so that the trolley (2) moves forward.
[0019]
In the modification shown in FIG.6 and FIG.7, the raising / lowering device (9) is devised so that it may become below the isolation | separation rail (7) and may not protrude upwards.
In this case, the air cylinder (10) has its piston rod (10a) side mounted on the bracket (17) attached to the transport beam (1) by a pin (18), and the cylinder body (10b) side is transported. A plate member (19) rising upward along the beam (1) and an arm (20) attached at right angles to the plate member (19) are connected to the separation rail (7).
Further, in this embodiment, the shaft support side end portion (21) of the separation rail (7) is reduced in diameter into a tapered shape so that it can be easily engaged with the inner groove portion of the separation wheel (6). Yes.
[0020]
In this modification, when air is sent to the air cylinder (10) by the operation of the solenoid valve (13), the cylinder body (10b) side rises and the separation rail (7) is lifted, and one set of trolleys (2) is lift.
[0021]
In the above-described embodiment, the separation rail is lifted and lowered by way of example while the separation rail is pivotally supported and rotated. However, as another aspect, the separation rail is lifted and lowered in a horizontal state. May be. Specifically, for example, a separation rail having both ends as free ends is always parallel to the piston rod (10a) of the air cylinder (10) in the lifting device (9) shown in FIG. The aspect which raises / lowers a separation rail is supported by supporting so that it may be hold | maintained. In this case, in order to stably hold the separation wheel (6) of the trolley (2) on the separation rail, for example, both ends of the separation rail may be bent upward.
[0022]
【The invention's effect】
According to the first aspect of the present invention, the workstation can be installed without stopping the drive shaft. Moreover, since a conveyed product is stopped on a drive shaft, a special space becomes unnecessary. Furthermore, since the extended end part which extended the horizontal direction one end of the separation rail by which the front-end | tip part was bend | folded in the reverse letter shape is made to be able to rotate the said front-end | tip part, The recessed part securely holds the separation wheel and raises and lowers the bent portion of the reverse hemispherical shape around the pivot point of the separation rail, which simplifies the lifting mechanism and makes heavy transport with the lever principle Even an object can be lifted and stopped. Furthermore, since the length of the separation rail is such that the separation wheels of a plurality of trolleys connected to each other can be locked, a large transport object suspended by trolleys at the front and rear is stopped by a simple mechanism. be able to.
[0023]
According to the invention described in claim 2 , the separation wheel can be smoothly engaged with the separation rail, and delicate adjustment of the positional relationship between the separation rail and the separation wheel becomes unnecessary.
[0024]
According to the third aspect of the invention, since the separation rail is lifted by the piston rod of the air cylinder, the mechanism is simple.
[0025]
According to the fourth aspect of the invention, since the air cylinder does not protrude upward, the invention can be applied even when there is no allowance for the mounting height.
[Brief description of the drawings]
FIG. 1 is a side view of the vicinity of a workstation of an embodiment of a hanging and conveying apparatus according to the present invention.
FIG. 2 is a partially enlarged perspective view of a pair of trolleys suspended on a drive shaft as viewed obliquely from above.
FIG. 3 is an enlarged side view of the vicinity of the separation rail of the workstation.
4 is a longitudinal sectional view taken along line IV-IV in FIG. 3. FIG.
FIG. 5 is also an operation circuit diagram of an air cylinder of the lifting device.
FIG. 6 is an enlarged side view similar to FIG. 3 of a modified example.
7 is a longitudinal sectional view taken along line VII-VII in FIG.
[Explanation of symbols]
(1) Transport beam
(1a) Drive shaft
(2) Trolley
(3) Conveyance holding unit
(4) Rotation drive device
(5) Traveling wheel
(6) Separation wheel
(7) Separation rail
(8) Mounting member
(9) Lifting device
(10) Air cylinder
(10a) Piston rod
(10b) Cylinder body
(11) Actuating member
(12) Piping
(13) Solenoid valve
(14) Pin
(15) Micro switch
(16) Coil spring
(17) Bracket
(18) Pin
(19) Plate member
(20) Arm
(21) Shaft support side end

Claims (4)

A drive shaft disposed along the conveying path and driven to rotate about an axis; a trolley suspended on the drive shaft via a traveling wheel that contacts at an oblique angle with respect to the rotational direction of the drive shaft; In the suspended conveyance device which consists of a conveyed product holding part suspended from the trolley, and the trolley is propelled along the drive shaft by the rotation of the drive shaft,
A plurality of trolleys which are suspended on the drive shaft, while supporting the front and rear of the conveyance object holding unit, on top of the trolley, said spaced apart from the running wheel and rotatably supporting the separation wheel, and tip opposite F-shape The extension end, which is bent in a horizontal shape and extends in the horizontal direction at one end, is pivotally attached to a height position that is slightly below the separation wheel, and the tip end is rotated upward about this pivot attachment point. possible the separation rail, its length, as a separation wheel lockable length of a plurality of trolley which are connected to each other, above the drive shaft, vertically movable arranged by the elevating device, before The separation wheel of the trolley that has moved forward on the separation rail is engaged with the separation wheel by raising the separation rail, so that the trolley is released from the suspended state on the drive shaft. Hanging transport equipment and butterflies. The tip of the separating rail, hanging conveyor device according to claim 1, wherein a tapered portion for diameter. An air cylinder is disposed in the upper part of the lifting device arranged so as to protrude above the drive shaft, an operating member is pivotally supported on the piston rod of the air cylinder, and a separation rail is supported at the lower end of the operating member Item 3. The suspension transfer device according to Item 1 or 2 . The piston rod of the air cylinder is pivotally supported by a fixed part on a lifting device arranged at a low position on the side of the drive shaft, and the cylinder body of the air cylinder is slidably supported by the fixed part and connected to a separation rail. Or the hanging conveying apparatus of 2.

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