JPH08257880A - Method and device for conveying workpiece on line - Google Patents

Abstract

PURPOSE: To shorten intermittent operation time by transfer loading a workpiece from a turn pallet just before onto a standby side emptied of a turn pallet, ending machining of a workpiece in each station, thereafter turning each turn pallet, and supplying the next workpiece to each station. CONSTITUTION: 1) A transferred feed hand 51 , slid to move onto a workpiece supply part 6, grasps a workpiece to return onto a turn pallet 31 , so as to place the workpiece on an emptied standby side 3b of this pallet 31 . 2) Next, the turn pallet 31 is 180 deg. turned to transfer the workpiece onto a station 21 . Here is applied prescribed work such as arranging an electric wire relating to the workpiece. 3) Then after ending work in the station 21 , the turn pallet 31 is 180 deg. turned to transfer a new workpiece onto the station 21 . Similarly the next transfer feed hand 52 transfers a work-finished workpiece on the turn pallet 31 to a turn pallet 32 , hereinafter successively to repeatedly perform a process of 2)-3)-1) relating to each transfer feed hand and the turn pallet 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a work transfer method and transfer device for sequentially transferring a work to each station on a line having a plurality of processing stations.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 4-172908 discloses a method of manufacturing an electrical junction box, which uses a pair of insulating substrates (or cases) facing each other, and one of the substrates has a predetermined electric wire. The wires are arranged in a pattern, the press-contact terminals are press-fitted and fixed to the other, the wires and terminals are connected by press-fitting by tying both boards together, and then the desired pattern is obtained by cutting and separating the above-mentioned one wire at appropriate points. Have been proposed to complete.

FIG. 9 shows each step in the manufacture of the electric junction box.
It shows how to transfer the work to the station.
It That is, the conveying means 100 such as a flat conveyor conveys the pallet.
The work (the above-mentioned insulating substrate) is placed on the carriage 101 and conveyed, and
Station S₁, S₂, S ₃In front of ... Palettes
Hold the work with the topper 102, as described above.
[Wire wiring], [Terminal press-fitting], [Wire and terminal pressure
Line], [cutting of electric wire]
Was.

In the above-described work transfer method, the pallet and the stations are in a one-to-one correspondence, and the work is placed on the pallet 101 and fixed to each of the stations S ₁ , S.
₂ 、 S ₃・ ・ ・ The next work cannot be conveyed in advance during the work, and the work tact of the whole machine is the processing time of each station and the transfer time between each station. And will be added. Therefore, even if the transfer hand is combined with the transfer of the pallet (that is, the work) by the conveyor, new work cannot be supplied unless the processed work is taken out from the pallet and transferred to the next station, and the work tact Is hardly shortened.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a work to be processed next is prepared while a work is being processed at one station, and a work tact is performed as a whole. An object of the present invention is to provide a method and an apparatus for transporting a work on a line that can shorten the time. Another object of the present invention is to provide a work transfer device that can transfer a work in as little space as possible.

[0006]

In order to achieve the above-mentioned object, a method for transferring a work on a line according to the present invention is defined in claim 1.
As described in, in a line in which a plurality of processing stations are juxtaposed, a method of transferring a work processed in one station to a next station in sequence, and a work processing side corresponding to each station. A turning pallet that turns 180 degrees with the opposite standby side,
Using the transfer hand that runs along the line above the standby side of each swivel pallet, 1) While the workpiece is being processed on the workpiece processing side of each swivel pallet, the processed side on the standby side of the swivel pallet has been processed. The work is moved to the next swivel pallet by the transfer hand, 2) the work from the immediately preceding swivel pallet is transferred to the empty standby side of the swivel pallet, and 3) the machining of the work at each station is completed. After that, a configuration is adopted in which the next work is supplied to each station by rotating each rotating pallet 180 °. Further, an apparatus for carrying out the above method is a work transfer apparatus for transferring a work processed by one station to a next station in a line in which a plurality of processing stations are arranged in parallel, as described in claim 2. There is 18 between the workpiece processing side and the opposite standby side corresponding to each station.
The present invention is characterized in that it is provided with a turning pallet that turns by 0 °, and a transfer hand that runs along a line is provided at the upper part of the waiting side of each turning passat so as to be able to move up and down.

[0007]

According to the inventions of claims 1 and 2, each processing station has a swivel pallet, and the next work is transferred to the opposite side of the swivel pallet by the transfer hand during processing of the work at the station. Can be set. Therefore, after the processing is completed, the processing can be started immediately by rotating the turning pallet by 180 °, and the work tact is shortened as a whole, and the productivity is improved. Further, in the work transfer device, a swivel pallet is arranged above a plurality of stations forming a line, and a transfer hand is provided on the opposite side to be freely movable, and the transfer mechanism overlaps the line as a whole. Since it is configured as described above, it becomes a space-saving type device.

[0008]

1 is a schematic plan view of a work transfer device showing the principle of the present invention, and FIG. 2 is a front view thereof. The line 1 is formed by arranging a plurality of stations 2 ₁ , 2 ₂ , 2 ₃ and 2 ₄ in a horizontal row, and a swivel pallet 3 ₁ , 3 ₂ , 3 ₃ and 3 ₄ is arranged on each station. There is.
Each swivel pallet is point-symmetrical about the rotation axis O,
One workpiece processing side 3a is arranged so as to be located in the center of each station, and a guide frame 4 is installed above the other standby side 3b, so that a plurality of transfer hands 5 ₁ ,
5 ₂ , 5 ₃ and 5 ₄ are provided so as to be able to travel along line 1 and to be able to move up and down. 6 is a work supply unit at the beginning of the line, and 7 is a work take-out unit at the end of the line.

The work is conveyed as follows. First, 1) the transfer hand 5 ₁ slides and the work supply unit 6
The work is moved upward, for example, a work (neither of which is shown) is grasped by a pair of chuck claws, returned to the top of the rotating pallet 3 ₁ , and the work is placed on the empty standby side 3b of the pallet 3 ₁ . 2) Next, the swiveling pallet 3 ₁ swivels 180 ° and the work is transferred onto the station 2 ₁ . Here, the work is subjected to predetermined processing such as wiring the electric wire as described above. It is processed the transfer of the workpiece 1) during processing in the station 2 _1. 3) Next, after the processing at the station 2 ₁ is completed, the swivel pallet 3 ₁ is swung 180 ° and a new work is transferred onto the station 2 ₁ . In the same manner, the transfer hand 5 ₂ moves the machined work on the swivel pallet 3 _{1 to the} swivel pallet 3 _1.
2 ), and then the steps 2) -3) -1) are sequentially carried out by each transfer hand 5 (5 _{1 to} 5 ₄ ) and the turning pallet 3 (3 _{1 to} 3).
₄ ) Repeatedly for station 2
Machined workpiece finished in ₄ are paid out to the work take-out portion 7 by the transfer hand 5 _4. Since the time required to transfer the work is done within the processing time at each station,
Overall work time is shortened.

FIG. 3 shows an example of the device of the present invention based on FIGS. 1 and 2.
FIG. 4 is a front view showing an embodiment, FIG. 4 is a right side view of FIG. 3, and FIG.
3 is an enlarged view of an essential part of FIG. 3, FIG. 6 is an enlarged view of an essential part of FIG. 4, and FIG.
FIG. 7 is a left side view of the transfer hand portion of FIG. 6. In these figures
The electric junction box manufacturing line 11 has a common mount 12
On the pedestal 12, the wires are arranged at regular intervals from the right side.
Station 13₁, Pressure welding station 13₂and
Cutting station 13₃Is divided into each station 1
Three ₁~ 13₃The electric wire so that it is located in the center of the
Cable unit 14₁, Pressure welding unit 14₂And cutting uni
14₃Is installed. Each unit 14₁~ 14
₃For the structure of the above, see Japanese Patent Application Laid-Open No. 4-172908.
I want to be illuminated.

Further, a plurality of columns 15 are mounted on the pedestal 12.
Through each station 13₁~ 13 ₃Cross the center of
The frame 16 is stretched. Front of frame 16
Each side (on the left side in FIG. 4) is attached via a mounting plate 16a.
Station 13₁~ 13₃Corresponding to the turning pallet 18
₁~ 18₃(18 is shown as a representative)
Each unit 14 on the surface₁~ 14₃Auxiliary unit for
26 is attached, and the upper part of the frame 16 is heavenly.
Work transfer machine provided with transfer hand 40 via plate 16b
Structure 30 is provided.

The swivel pallet 18 is, as shown in FIG.
It has a rectangular shape and is formed in a point-symmetrical shape with the pivot 19 as a center. In the illustrated example, the work (insulation case) is provided on both sides.
A mounting frame 20 is provided for the positioning frame 21 and a positioning pin 21 is projectingly provided. Reference numeral 22 is a stopper for the turning pallet 18. The rotary shaft 19 of the rotary pallet 18 extends upward through two bearings 23, 23 'provided on the mounting plate 16a, and a rotary actuator 25 mounted on the lower surface of the top plate 16b via a coupling 24. They are connected, and as shown in FIG.

[0013] Auxiliary unit 26, in the illustrated example, are made to enhance the electrical wire routing unit 14 _1, an air cylinder 27 fixed to the rear surface of the frame 16 via a mounting plate 16c, the piston rod 27a The pressing plate 28 is fixed to the lower end of the pressing plate 28, and a positioning pin 29 for the work W projects from the lower surface of the pressing plate 28.

The work transfer mechanism 30 has a moving beam 35 provided on the top plate 16b of the frame 16 so as to be horizontally movable.
And a moving hand 40 provided on the front surface of the moving beam 35 so as to be vertically movable and provided with a pair of chuck claws 41. That is, the guide rails 3 are provided on the front side on the top plate 16b.
1. A slider 3 in which rodless cylinders 32 are provided in parallel on the rear side and slidably mounted on the rodless cylinders 32.
3 is connected to the back surface of a moving beam 35 via a joint member 34, and the moving beam 35 is slidably supported by a linear motion bearing 36 mounted on a guide rail 31. An elevating cylinder 38 is vertically installed on the front surface of the moving beam 35 via a mounting plate 37, and the piston rod 3
A transfer hand 40 is attached to the lower end of 8a via an L-shaped mounting plate 39.
Is installed. The transfer hand 40 includes a pair of chuck claws 41, 41 that can be opened and closed, a housing 42 that houses the chuck claws 41, 41, and a cylinder 4 that opens and closes the chuck claws 41, 41.
3 and 3. Therefore, the transfer hand 40 of the work transfer mechanism 30 laterally moves (X axis) by the operation of the rodless cylinder 32, and vertically moves (Y axis) by the elevating cylinder 38.
Then, the operation of the cylinder 43 opens and closes the chuck claws 41.

The transfer hands 40 are provided at equal intervals, a total of four, one corresponding to each of the swivel pallets 18 ₁ to 18 ₃ and _one for transferring the unprocessed work W to the first swivel pallet 18 _1. However, in FIG. 3, the turning pallet 18 ₂ ,
Those corresponding to 18 ₃ are omitted for simplification of the drawing.
Further, in FIG. 4, reference numeral 44 indicates a take-out unit for the processed work.

Next, the turning pallet 18 and the work transfer mechanism
The conveyance of the work W by 30 will be described. In Figure 3
And each swiveling pallet 18₁, 18₂, 18₃Processing side
Then, the placed work W₁, W₂, W₃Are each
Wire installation unit 14₁, Pressure welding unit 14₂, Cutting uni
14₃Has been processed by the
The state that the processed work is placed on the unit
I do. In this state, the moving beam 35 of the transport mechanism 30 is moved by the arrow.
Move to the right as indicated by the line P and move the four transfer hands 40
Each unprocessed workpiece W₀And each turning pallet 18₁~ 18 ₃
Upper work W₁~ W₃Positioned above each transfer hand 4
0 is lowered all at once by the lifting cylinder 38,
Work W with the back claws 41, 41₀~ W₃Grab the top
Raise it. As a result, the standby side of each turning pallet 18
Become empty.

Therefore, the moving beam 35 is moved to the side opposite to the arrow P, the transfer hand 40 ₀ is placed on the turning pallet 18 ₁ , the transfer hand 40 ₁ is placed on the turning pallet 18 ₂ ,
The transfer hand 40 ₂ is positioned on the swivel pallet 18 ₃ and the transfer hand 40 ₃ is positioned on the take-out unit 44, and they are simultaneously lowered to move the chuck claws 4 in the same manner as described above.
1, 41 are opened, and the works W _{0 to} W ₃ are released. As a result, new workpieces W ₀ , W ₁ , W ₂ to be machined next are prepared on the standby side of the swiveling pallets 18 ₁ , 18 ₂ , 18 ₃ .

Next, when the machining with each of the rotating pallets 18 ₁ to 18 ₃ is completed, the rotary actuator 25 is driven to rotate 180 °, and new works W ₀ , W ₁ and W ₂ are already prepared. Therefore, the processing by each unit 14 ₁ , 14 ₂ , 14 ₃ can be started immediately. Hereinafter, the steps may be similarly repeated. Further, if the time required to convey the work W is sufficiently shorter than the processing time at each station 13 or unit 14, the number of transfer hands 40 can be smaller than that of the swivel pallet 18.

[0019]

As described above, according to the inventions of claims 1 and 2, each processing station has a swivel pallet, and the transfer hand waits the swivel pallet by a transfer hand during processing of a workpiece at the station. The next work can be transferred to the side. Therefore, after the machining is completed, the machining can be started immediately by rotating the swiveling pallet by 180 °, the work tact is shortened, and the productivity is improved. In addition, the work transfer device has a swivel pallet arranged above a plurality of stations forming a line, and a transfer hand is movably provided on a standby side opposite to the work processing side, so that the line as a whole can be moved. Since the transport mechanisms are configured to overlap, a space-saving type device is provided.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing the principle of the device of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a front view showing an embodiment of the device of the present invention.

FIG. 4 is a right side view of FIG.

5 is an enlarged view of a main part of FIG.

FIG. 6 is an enlarged view of a main part of FIG.

FIG. 7 is a left side view of the transfer hand portion of FIG.

FIG. 8 is a plan view of the swivel pallet of FIG.

FIG. 9 is an explanatory view of a conventional-line work transfer method.

[Explanation of symbols]

 11 lines 13 stations 18 swivel pallet 25 rotary actuator 31 guide rail 32 rodless cylinder 33 slider 40 transfer hand 41 chuck jaw W work

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H01R 43/20 6901-5B H01R 43/20 Z

Claims (2)

[Claims] 1. A method of transferring a work, in which a work processed in one station is sequentially transferred to a next station in a line having a plurality of processing stations arranged side by side, the work processing side and its corresponding side. 1) Using a swivel pallet that swivels 180 ° with the opposite standby side and a transfer hand that travels along the line above the standby side of each swivel pallet, 1) While processing, the machined work on the standby side of the swivel pallet is moved toward the next swivel pallet by the transfer hand. The work is transferred, and 3) after finishing the machining of the work in each station, rotate each swivel pallet 180 ° Workpiece transfer method on a line and supplying the over click. 2. A work transfer device for sequentially transferring a work processed by one station to a next station in a line having a plurality of processing stations arranged side by side, the work processing side and its corresponding work stations. The work on the line is characterized in that it is equipped with a revolving pallet capable of revolving 180 ° with the opposite standby side, and a transfer hand traveling along the line is provided at the upper part of the revolving passat on the standby side so that it can be raised and lowered. Transport device.