JP3067656B2 - Work transfer system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box (hereinafter, referred to as an "intermediate product", "final product") and various products such as intermediate products, using an overhead traveling vehicle traveling along a rail laid near a ceiling. The product and the box in which it is stored,
Simply, "work". The present invention relates to a work transfer system for transferring a work, raising and lowering the work, loading and unloading the work to and from a processing station for performing various processes and processing on the work.

[0002]

2. Description of the Related Art Conventionally, after an overhead traveling vehicle is stopped above a predetermined processing station, a winding drum arranged on the overhead traveling vehicle is rotated forward and backward as appropriate to connect a wire to the winding drum. By winding the wire or feeding out the wire from the winding drum, the chuck device for gripping the work is raised and lowered, and the work held by the chuck device is loaded and unloaded to the processing station, and the work is gripped by the chuck device. There is known a work transfer system that loads a work from a processing station.

[0003]

In a conventional work transfer system, when a plurality of works are batch-processed at a predetermined processing station, the overhead traveling vehicle is used to temporarily perform the processing in the processing station or the processing station. A predetermined number of works are accumulated on a nearby floor or a table placed on the floor, and thereafter, the predetermined number of accumulated works are again supplied to the processing station using an overhead traveling vehicle. The conventional work transfer system has a problem that the processing station and the floor area must be increased in order to accumulate the work on the floor or a table placed on the floor in or near the processing station. .

In addition, since the work is accumulated on the floor or a table placed on the floor in or near the processing station, the up-and-down distance of the chuck device for gripping the work becomes longer, and as a result, the accumulation of the work is increased. There is a problem that the time becomes longer and the work efficiency of the overhead traveling vehicle decreases.

An object of the present invention is to solve the problems of the above-described conventional work transfer system.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention firstly rotates a winding drum forward and backward as appropriate to wind a wire around the winding drum,
Alternatively, a work transport system having an overhead traveling vehicle that travels along a rail laid near a ceiling while raising and lowering a chuck device by feeding out a wire from a winding drum, wherein a rack on which the workpiece can be placed.
The storage rack member having, processing with the station
The rail above the nearby floor and below the rail.
To prevent it from moving.
The work to be processed in the
After placing the work on the rack,
Second, rails into which nuts can be inserted are supplied to the processing station by a traveling vehicle.
The dovetail groove formed along the longitudinal direction of the
Rack frame with perforated holes
Bolts through the through holes in the rack frame placed on the
And bolts into the dovetails formed in the rails.
Screw the rack frame to the rails.
Attached, which has to attach the rack to the rack frame, the third, near the front and back of the processing station, 2
The storage rack members are attached .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, referring to FIG. 1, a description will be given of an overhead traveling vehicle V traveling along a rail laid near a ceiling constituting a work transfer system of the present invention.

Reference numeral 1 denotes a rail laid near the ceiling by a mounting means described later, and the cross section of the rail 1 perpendicular to the longitudinal direction is formed in a substantially C shape. 2
Are two trucks, and the traveling vehicle main body 3 is connected to the carriage 2 by a pivot shaft described later, and a chuck device capable of gripping a work 4 is provided below the traveling vehicle main body 3. A winding unit 7 having a winding drum capable of moving up and down the chuck device 5 by winding or unwinding the wire 6 to which the wire 5 is attached is provided.

Next, the means for attaching the rail 1 to the ceiling and the carriage 2 will be described with reference to FIGS.

Reference numeral 8 denotes a rail support member. The rail support member 8 includes a vertical portion 8a, an upper horizontal portion 8b, and a lower horizontal portion 8c. Reference numeral 9 denotes a bolt having screws engraved on upper and lower portions, and upper portions of the pair of bolts 9 are embedded in the ceiling 10 at predetermined intervals so as to sandwich the rail 1. 11 is a cover for covering the bolt 9. The lower screw portion of the bolt 9 is inserted into a through hole formed in the upper horizontal portion 8b of the rail support member 8, and the upper horizontal portion 8b of the rail support member 8 is inserted into a pair of nuts 12a, 12a.
The rail support member 8 is attached to the ceiling 10 via the bolt 9 by being sandwiched between the rails b. Reference numeral 13 denotes a cap that covers the screw portion of the bolt 9 protruding downward from the upper horizontal portion 8b of the rail support member 8 and the nut 12b.

A pair of dovetail grooves 1a is formed on the upper surface of the rail 1 along the longitudinal direction of the rail 1, and a lower horizontal portion 8c of the rail support member 8 is spaced apart from the lower horizontal portion 8c by a predetermined distance. A through hole 8d is formed. The nut 14 is inserted into the dovetail groove 1 a formed in the rail 1 and the bolt 15
Is inserted into a through hole 8d formed in the lower horizontal portion 8c of the rail support member 8, and the screw of the bolt 15 is screwed into the nut 14 inserted in the dovetail groove 1a formed in the rail 1. Thereby, the rail 1 is attached to the rail support member 8.

The rail support member 8 as described above is attached to the ceiling 10 at predetermined intervals via bolts 9, and the rail 1 is attached to the rail support member 8 so that the vicinity of the ceiling 10 is secured. Rail 1 is laid.

A horizontal shaft 2c is provided on a main body 2a of the carriage 2 via a bearing 2b. One end of the horizontal shaft 2c is attached with wheels 2d rolling on a lower horizontal surface 1b of the rail 1. Have been. A bevel gear 2e is attached to the other end of the horizontal shaft 2c, and a bevel gear 2g attached to the output shaft of the motor 2f meshes with the bevel gear 2e. A guide roller 2h is rotatably arranged on the main body 2a of the carriage 2 so as to sandwich the upper vertical edge 1c and the lower vertical edge 1d of the rail 1 respectively. Accordingly, the motor 2f is appropriately driven to drive the bevel gear 2g and the horizontal shaft 2c attached to the output shaft of the motor 2f.
By rotating the horizontal shaft 2c through the bevel gear 2e attached to the vehicle, the wheels 2d rotate, and the truck 2
It will run along. Also, guide roller 2
h is the upper vertical edge 1c and the lower vertical edge 1 of the rail 1
Since d is sandwiched, the carriage 2 can travel along the rail 1 in a stable state. A pivot 2i is attached to the main body 2a of the truck 2, and the traveling vehicle main body 3 is connected to the pivot 2i.

Next, the means for attaching the storage rack member 16 to the rail 1 will be described with reference to FIGS.

Reference numeral 16a denotes a rack frame.
A pair of through holes 16b are formed at a predetermined interval in the upper horizontal portion 16a 'of FIG. The nut 17 is inserted into the dovetail groove 1a formed on the rail 1 and the bolt 18
Through the through hole 16b formed in the upper horizontal portion 16a 'of the rack frame 16a, and screw the bolt 18 into the rail 1
The rack frame 16a is attached to the upper surface of the rail 1 by screwing into a nut 17 inserted in the dovetail groove 1a formed in the rail.

A plurality of rack frames 16a (in the present embodiment, as shown in FIG. 8, two rack frames 16a are provided at predetermined intervals along the longitudinal direction of the rail 1).
a is attached. The rack 16c is attached to the lower horizontal portion 16a ″ of the rack frame 16a. Thus, the plurality of rack frames 16a attached to the rail 1 and the lower horizontal portion of the rack frame 16a are attached. The storage rack member 16 is constituted by the rack 16c placed on the portion 16a ″. Rack frame 16a
The rack 16c mounted on the lower horizontal portion 16a "is located below the overhead traveling vehicle V so that the work 4 mounted on the rack 16c does not collide with the overhead traveling vehicle V traveling along the rail 1. The rack frame 16a is arranged so that the vertical portion of the rack frame 16a does not collide with the overhead traveling vehicle V.
The upper horizontal portion 16a 'and the lower horizontal portion 16a "of" a "have a sufficient width.

In order to further shorten the delivery time of the work 4 by the overhead traveling vehicle V to the rack 16c and to increase the space below the rack 16c,
It is preferable that the storage rack member 16 be as close as possible to the rail 1 in the height direction as long as the work 4 placed on the rack 16c does not collide with the overhead traveling vehicle V.

Next, the function of the storage rack member 16 disposed on the rail 1 as described above will be described with reference to FIG.

The rail 1 is laid near the ceiling in a substantially U shape as an example, and the overhead traveling vehicle V runs along the rail 1. P1 and P2 are processing stations for performing desired processing and processing on the work 4, and a storage rack member 16 is suspended from the rail 1 near the processing station P1. In the case where a plurality of works 4 are collectively processed in the processing station P1, the work 4 conveyed by the overhead traveling vehicle V is temporarily supplied to the processing station P1 without being placed on the floor or the like. Is placed on a storage rack member 16 suspended from the rail 1 near the processing station P1. After a predetermined number of works 4 are accumulated in the storage rack member 16, the work 4 is moved by the overhead traveling vehicle V.
Supply to the processing station P1.

In the vicinity of the processing station P2,
Storage rack members 16 are arranged. For example, on the storage rack member 16 located on the right side of the processing station P2, as described above, a predetermined number of the workpieces 4 to be processed in the processing station P2 are placed, and on the storage rack member 16 located on the left side of the processing station P2. On the member 16, a processed work 4 or an empty box or the like capable of storing the work 4 is placed.

In the above-described embodiment, an example in which the storage rack member 16 is hung on the rail 1 has been described. However, the upper part of the bolt is buried in the ceiling 10 and the rack frame 16a is attached to the lower part of the bolt. Thus, a plurality of rack frames 16a can be attached to the ceiling 10 via bolts, and the rack 16c can be attached to the rack frames 16a. Further, the storage rack member 16 can be provided not only in the vicinity of the processing stations P1 and P2 but also over the entire area of the rail 1 except for the position directly above the processing stations P1 and P2.

[0022]

Since the present invention is configured as described above, the following effects can be obtained.

Since the storage rack member on which the work can be placed is disposed above the floor surface and below the rail, space saving of the processing station and the floor can be realized, and the work by the overhead traveling vehicle can be realized. Delivery time can be shortened.

Since the storage rack member is mounted on the rail, a dedicated mounting member is not provided on the ceiling, and the installation work of the storage rack member can be simplified.

[0025] The rack frame is mounted on the rail by screwing a bolt to a nut inserted in a dovetail groove formed in the rail. Therefore, the rack frame can be easily mounted and removed, and the storage space can be easily removed. The mounting position of the rack member can be easily changed along the rail.

[Brief description of the drawings]

FIG. 1 is a perspective view of an overhead traveling vehicle and the like used in a work transfer system of the present invention.

FIG. 2 is a front view of a main part of an overhead traveling vehicle and the like used in the work transfer system of the present invention.

FIG. 3 is a side view of a main part including a vertical cross section of a part of a rail and an overhead traveling vehicle for explaining rail mounting means and the like in the work transfer system of the present invention.

FIG. 4 is a perspective view of a main part of a rail, an overhead traveling vehicle, and the like for explaining rail mounting means and the like in the work transfer system of the present invention.

FIG. 5 is a side view of a main part including a vertical cross section of a rail for explaining means for attaching a storage rack member to the rail in the work transfer system of the present invention;

FIG. 6 is a side view of a storage rack member, an overhead traveling vehicle, and the like for explaining a means for attaching a storage rack member to a rail in the work transfer system of the present invention.

FIG. 7 is an overall side view of a storage rack member, an overhead traveling vehicle, and the like for explaining means for attaching a storage rack member to a rail in the work transfer system of the present invention.

FIG. 8 is an overall front view of a storage rack member, an overhead traveling vehicle, and the like for explaining means for attaching a storage rack member to a rail in the work transfer system of the present invention.

FIG. 9 is a partial plan view of the work transfer system of the present invention.

[Explanation of symbols]

 P1, P2 Processing station V Overhead traveling vehicle 1 Rail 1a Dovetail groove 2 Cart 4 Work 8 Work rail support member 16 Storage rack member 16a Rack frame 16c rack

Continuation of the front page (56) References JP-A-6-24681 (JP, A) JP-A-6-20388 (JP, U) JP-A 60-130283 (JP, U) JP-A 62-71183 (JP) (U, U) U.S. Pat. No. 5,228,820 (US, A) WO 94/16978 (WO, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B66C 11 / 00-11/26 B66C 9/00-9/18 B65G 1/04 551 B66C 17/00-17/26 B66C 19/00-19/02 WPI / L (QUESTEL)

Claims (3)

(57) [Claims] An apparatus according to claim 1, wherein the winding drum is rotated forward and backward as appropriate to wind the wire around the winding drum, or to feed out the wire from the winding drum, thereby moving the chuck device up and down and moving the chuck device near the ceiling. A work transfer system having an overhead traveling vehicle traveling along an laid rail, a storage rack member having a rack on which a work can be placed, above a floor near a processing station ,
Also, do not move below the rail with respect to the rail.
And processed at the processing station
After placing the work to be mounted on the rack once,
The work placed on the ceiling is moved by the overhead traveling vehicle.
A work transfer system for supplying to a processing station . 2. A longitudinal direction of a rail into which a nut can be inserted.
With a dovetail groove and a through hole through which bolts can be inserted
With the rack frame
Bolts through the through holes of the rack frame
Screw the nut inserted into the dovetail groove formed on the rail
By attaching the rack frame to the rail,
The work transfer system according to claim 1 , wherein a rack is attached to the frame . 3. Two switches are provided near the front and rear of the processing station.
3. The work transfer system according to claim 1, wherein a storage rack member is attached .