JPS62157857A - Work conveyor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention mainly relates to a method for suspending large sheet metal workpieces, such as automobile side panels, from a transfer station at the end of a processing line to a discharging station at the end of the processing line on a hanger. The present invention relates to a workpiece conveyance device that is applied to convey a workpiece.

(Prior Art) Conventionally, when the distance between the transfer station and the dispensing station is relatively long, moving one hanger back and forth between the two stations would reduce the amount of time and time required for the reciprocating movement of the hanger. Since the time required for unloading workpieces at the unloading station is longer than the takt time at the unloading station, productivity is reduced due to time loss, so a loop-shaped hanger conveyance path passing through both stations is provided. By circulating multiple nozzles along the conveyance path,
I am trying to transport the workpiece.

(Problem to be solved by the invention) When transporting large workpieces such as side panels, the hangers also become large, and the hangers do not support them at the turns at both ends of the loop-shaped conveyance path mentioned above. In this case, the curvature of the turn part makes it necessary to make a large noise, and the space for placing the transfer path is wide, and the circumference of the transfer path becomes long. In order to transfer the workpiece to the unloading station and unload the workpiece at the unloading station at the same time, it is not possible to make the interval longer than the distance between both stations, and as the circumference of the transport path increases, the number of hangers used increases. , there is a problem of increased equipment costs.

SUMMARY OF THE INVENTION In order to solve these problems, it is an object of the present invention to provide a 6ft device that reduces the space for disposing a conveyance path and enables efficient workpiece conveyance with a small number of hangers.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes the following steps:
The middle part of the hanger conveyance path is separated into an outgoing path and a return path,
A point member located on the transfer station, at a branching point of the outbound path and the return path with respect to the starting end portion of the conveyance path, for preventing the hanger from moving backward from the starting end portion to the return path; and a point member located on the dispensing station. A point member is provided at the branching part of the outgoing path and the incoming path with respect to the terminal end of the conveyance path to prevent the reverse movement of one finger from the terminal end to the outgoing path, and the point member is provided to prevent the forward path from the starting end of the plurality of hanger gold wires. The material is conveyed from the terminal end portion to the starting end portion via the return route.

(Function) At the transfer station, the processed workpiece is suspended on a hanger located at the starting end of the conveyance path, and at the unloading station, the workpiece is removed from the hanger at the end of the conveyance path, and then the workpiece is suspended. The next hanger metal is transported from the starting end portion to the terminal end portion via the outward path, and the empty nounger is transported from the terminal end portion to the starting end portion via the return path, in preparation for the next workpiece conveyance.

At this time, the point member provided at the branching point between the outgoing and returning paths to the starting end portion prevents the hanger holding the workpiece from returning to the returning path, and the point member provided at the branching point between the outgoing path and the returning path to the terminal portion. According to the point member provided, empty /
The reverse movement of the S yarner to the outward path is prevented, and each yarn is eventually moved back and forth between the transfer station and the unloading loss section along the yarn path of the starting end → outgoing path → terminal end → returning path → starting end. Become.

The conventional loop-shaped conveyance path according to the present invention has a structure in which a loop portion is provided at each outer end of the starting end portion and the terminal end portion to connect the outgoing path and the returning path. However, in the present invention, since there is no loop portion, the space for arranging the conveyance path can be greatly reduced.

(Referring to Figure 1 and No. 21, S1 indicates the transfer station installed at the end of the Karoe line L of the side panel W of the car that is the workpiece, S2 indicates all the discharging stations beyond that, and the side/zenel W At the transfer station S1, the workpiece is transferred from the hanger 1 for transporting the workpiece in the machining lie/L to the hanger 2 for unloading, and then transported by the hanger 2 to the unloading station S2.

As shown in FIG. 3, the payout station S2 is placed on the side of the automatic motorcycle body assembly station S3, and the transfer device N provided at the bottom of the payout station s2
Transfer the side panel W from the hanger 2 to B.
The equipment is transferred from the transfer device input to the assembly station S3 via the IJ setting jig Bf to the companion welding jig C, and then transferred to the welding jig 0 for the floor and roof carried into the center of the assembly station S5. I made it so that it is in contact with Yoshiside A channel wt-m.

As clearly shown in Figures 4 and 5, the hanger 2 is suspended from a conveyance path 3 consisting of a pair of rails via a pair of front and rear trolleys 4a, 4a, and is supported longitudinally in the front and back direction. No. 4, a pair of front and rear arms 5.5 which are pivoted on the lower side of the support par 4 so as to be able to swing laterally around the upper end shaft 5a, and are pivotally connected to the lower ends of both arms 5.5. The hanger 2 is carried into the starting end portion 3a of the conveyance path 3 located on the transfer station S1, and the lateral side of the hanger 2, that is, the fifth With the hanger 1 transported to the opposing position on the left side in the figure, both arms 5, 5 are swung to the left, and both hooks 6.6 are attached to each arm 5 about its pivot 6a. While holding it in a horizontal position by swinging in the counterclockwise direction, move it to the workpiece receiving position shown by the imaginary line in FIG. Next, the hanger 1 is lowered seven times to allow the hooks 6 and 6 to receive the side nose bolts W, and then the arms 5 and 5 are swung back to their original positions below as shown by solid lines in FIG. The entire side panel W was transferred to the hanger 2. or,
As clearly shown in the sixth factor and FIG. 7, the terminal end portion 3bi of the conveyance path 3 located above the payout station S2 is provided with a pair of front and rear lifting cylinders 8, 8 on the upper machine frame 7 so as to be freely raised and lowered. After supporting the end portion 3bK and carrying in the hanger 2, the end portion 3b is lowered and the side panel wl is lowered together with the hanger 2. After the side panel W is received by the transfer device, both arms 5 .5 is swung in the opposite direction to the above, that is, to the right in FIG. The hook 60 is attached to the lower end of each arm 5 so that it can be swung upwardly to the right together with each arm 5.
has been established. In addition, the transfer station 8 for both arms 5, 5
The leftward swinging in 1 is caused by a bushing roller 10a'ii which is linked to a cylinder 1o attached to a lever 9 protruding from the right side of the rear arm 5 at a position opposite to the levers 9 of the starting end portion 3a. The two arms 5.5 were brought into contact with each other, and the rightward swinging of the two arms 5.5 at the dispensing station S2 was provided by protruding from the left side of the front arm 5. 9
a bushing roller 10a interlocked with a cylinder 10' mounted at a position opposite to the cylinders 9' of the terminal end portion 3b;
``I tried to do this by making them come into contact with each other.

According to the characteristics of the present invention, the entire intermediate portion of the conveyance path 3 is separated into an outgoing path 3c and a returning path 3d, and a branching portion of the outgoing path 3c and the returning path 3d with respect to the starting end portion 3a is separated from the starting end portion 3a. A first point member 111 is provided to prevent the hanger 2 from entering the return path 3d, and a hanger 2 from the end portion 3b to the outbound path 3d is provided at a branch point between the outbound path 3c and the return path 3d relative to the terminal end portion 3b. A second point member 11□ is provided to prevent the intrusion of 3a to the terminal end portion 3b via the outward path 3c, and from the terminal end portion 3b to the starting end portion 3a via the return path 3dffi.

As clearly shown in FIGS. 8 and 9, the first point member 111 is made of a tapered plate similar to the starting end portion 3a, and has a shaft fixed to the tail end of the point member 111. The starting end portion 3a is supported in the support tube 11a on a support shaft ttb that is erected between the branching part of the outgoing path 3c and the incoming path 3b.
and one forward movement position connecting the outgoing path 3c, the starting end portion 3a and the incoming path aC+,! The point member 111 is normally urged by a spring llc to the forward movement position, and the starting end position 3a is
The hanger 2 is installed on the support holes 4 of the hanger 2 to prevent the hanger 2 from entering the return path 3d from the hanger 2.
When returning from the return path 3d to the starting end portion 3a,
The point member 111 is pushed by the trolley 4a and swung to the return position against the spring llc, allowing the hanger 2 to return to the starting end portion 3a.

The second point member 112 has the same structure as the first point member 111 except that it is opposite in direction, and is normally in a return position connecting the terminal end portion 3b and the return path 3d. The hanger 2 is biased to prevent the hanger 2 from entering the outward path 3c from the terminal end portion 3b, but when the hanger 2 moves forward from the outward path 3c to the terminal end portion 3b, the terminal end portion 3b and the outward path 3c are oscillates to the forward position where it connects the
It functions to allow forward movement of the hanger 2 to the end portion 3b.

Here, said Toro! J-4a is pivotably installed on the upper surface of the support par 4, and has a pair of front and rear claws 4c, 4c'i protruding from nine trolley main bodies 4b, and a pair of right and left running claws on the valley claws 4c. The roller 4d and the guide row 746 at the center of the lower part are attached and removed.
The guide roller 4d'5 is supported by a pair of five-stone rails constituting the rail, and the guide roller 4d'5 is inserted between the two rails to prevent run-in.

In addition, as a conveyance mechanism for each hanger 2, first and second conveyor chains 121.12□ for conveying hangers are provided on the forward path 3c and the backward path 3d, respectively, and the starting end portion 3a
The hanger 2 is attached to the end portion 3b and the respective portions 3a, 3.
First and second conveying members 131.13□ are provided which can freely move in and out of the outgoing path 3c and the incoming path 3d from b.

Each of the conveyor chains 121, 122 includes a drive sprocket 12b driven by a motor 12a as shown in FIG.
Between the driven sprocket 12c as shown in FIG. 9 provided above the front end of the outgoing path 3c and the incoming path 3d,
c and the guide rail t2d provided above the return path 3d, and each conveyor chain 121
．． Each transport hook 12e'i installed vertically on 12□
The hanger 2 is conveyed by being engaged with the claw piece 4c of the J-4a. 12f in the drawing is guide rail 12d
This shows the chain lifting section running above.

As shown in FIG. 4 to FIG. 7, each of the conveying members 131 and 132 has a
1, the V-/L/13 is set along the V-L/13a.
It is composed of a truck 13c that is reciprocated by a cylinder 13b provided outside in the longitudinal direction of a, and an engagement pin 13d supported by the truck 1'3c so as to be able to move up and down. Engagement bin 13 of the provided first conveying member 131
Toro on the rear end side of d gold hanger 2! By inserting and engaging J-4a from above between the pair of front and rear claw pieces 4c, 4c and reciprocating the trolley 13c'iH in the next state, the hanger 2 is pushed out from the starting end portion 3a to the outgoing path 3c,
The hanger 2 is pulled in from the return path 3d to the starting end portion 3a, and the engagement via 13 of the second conveyance member 13□ provided at the rear end portion 3b is inserted into the front end side of the hanger 2! J-4
By reciprocating the cart 13c in the state in which it is engaged with the hanger 2 as described above, the hanger 2 can be moved from the rear end portion 3b to the return path 3.
As well as extruding to d, go c1! ! r3 c to rear end part 3
Hanger 2 can be pulled into b.

Here, the engaging bin 13d is attached to the upper end of both sides of the running rail 13a at the next rollers 13e, 13e.
The roller L is supported on the upper surface so as not to fall downward, and the roller L is placed at a predetermined position in the longitudinal direction of the traveling rail 13a.
cam 13 that lifts the engagement bin 13d' via 3e'i
ft is provided, and when the hanger 2 is conveyed to the predetermined pushing position shown by the imaginary line in FIG.
-4a, that is, the engagement with the hanger 2 is released.

Next, to explain the overall operation of the above-mentioned implementation, at the transfer station S1, a side nozzle is transferred from the hanger 1 for transporting the work in the processing line L to one of the nozzles 2 located at the starting end portion 3a of the transport path 3. At the same time, at the discharging station 8
Conveying member 13. and the 24th M feeding member 132 are moved forward and backward, respectively, to convey each hanger 2 to a predetermined extrusion position.

In this case, the front end side of one hanger 2') -4
a passes through the first point member 111t and is pushed out to the outward path 3c, and the trolley 4a on the rear end side of the other hanger 2 passes through the second point member 11□ and is pushed out to the return path 3d. , 132 and each hanger 2 are released by the upward movement of the engagement bin 13d by the cam 13f, and then each of the first and second conveyor chains 121.tz2t-i
a, first, between the front and rear claw pieces 4c of the trolley 48 on the front end side of the one hanger 2 and the other hanger 2.
The conveyor hooks 12e suspended from the respective conveyor chains 121+122 are inserted and engaged between the front and rear claw pieces 4c, 4c of the rear end side Toro')-4a, passing over the respective rear claw pieces 4c in the conveyance direction, The valley hanger 2 is on the outbound trip 3c and the return trip 3d.
and the Toro IJ on the rear end side of the one hanger 2.
-48 and Toro IJ-4a on the front end side of the other hanger 2
When the conveyor chains 121, 12□ are attached to the respective trolleys 4a and 4a when they enter the outward route 3c and return route 3d, respectively.
The next conveyance hook 12d is engaged, and in this state, the one hanger 2 is conveyed forward along the outward path 3C, and the other hanger 2 is conveyed backward along the backward path 3d.

The one hanger 2 is located on the rear end side at the location where the drive sprocket 12b is located at the front end of the outgoing path 3c. After the transport hook 12e is detached from J-4a, it moves forward to the terminal end portion 3b due to inertia, and the other hanger 2
After the transport hook 12e is detached from the front end side Toro'J-4a at the location of the driven sprocket 12c at the rear end of the return path 3d, the starting end portion 4 is moved by inertia force in the same manner as above.
Move backwards to a.

Next, the first conveying member 131 and the second conveying member 132 are moved backward and forward, respectively. According to this, during the backward movement of the second conveying member 132, the engaging bin 13d is moved back to the one side. Toro on the front end side of hanger 2! J-4a is inserted and engaged between the rear claw piece 4c and the front claw piece 4c, and the one hanger 2 is completely retracted into the terminal end portion 3b by the subsequent backward movement of the conveying member 132. At the same time, during the return movement of the first conveying member 131, the engagement pin 13d is moved to the rear end side of the other hanger 2. 4c is inserted and engaged in the same manner as described above, and the other hanger 2 is pulled into the starting end portion 3a and positioned at a fixed position.

Thereafter, the site nozzle W suspended on the one hanger 2 is taken out and the next side panel W is transferred to the other hanger 2, and then the one hanger is moved in the same manner as above. 2 is conveyed from the terminal end portion 3b to the starting end portion 3b via the return path 3d, and the other hanger 2 is conveyed from the starting end portion 3a to the terminal end portion 3b via the outward path 3cQ. Then, the above operation is repeated, and one hanger 2 and the other hanger 2 are alternately transported from the side panel w2 transfer station y81 to the payout station s2.

(Effect of the invention J As described above, according to the present invention, the space for arranging the hanger conveyance path is greatly reduced compared to the conventional loop-shaped conveyance path, and the factory space can be used effectively. The number of units used can be reduced, which has the effect of reducing equipment costs.

[Brief explanation of drawings]

FIG. 1 is a side view of one row of the device of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a cross-sectional view taken along line In-III in FIG. 2, and FIG. - An enlarged side J-side view of the main parts of the transfer station seen from the IV line, Figure 5 is the v- of Figure 2.
A cross-sectional view cut at vi, Figure 6 is the vt-vt diagram in Figure 2.
FIG. 7 is an enlarged side view of the main part of the dispensing station as seen from i, FIG. 7 is a cross-sectional view cut along the line ■-■ in FIG. 6, FIG. Figure 9 is a cross-sectional view cut along IX-IX Iwao in Figure 8, and No. 101 is a cross-sectional view of No. 2.
FIG. 3 is an enlarged cross-sectional side view taken along line XX in the figure. L...Processing line Sl...Transfer station S2...Unloading station W...Side panel (
Work] 2... Hanger 3... Conveyance path 3a
...Starting end portion 3b...Ending end portion 3c...
・Outbound trip 3d...Return trip 11, , 11
□... Point members 121, 122... Conveyor chain 131, 132... Conveyance member 13a.
...Traveling rail 13b...Cylinder 13c...
・Bogie 13d...Engagement e/t3f...Cam Patent applicant Fuda Giken Kogyo Co., Ltd. 2″:・-1 Agent Kin Kitamura ---
4. J 2-person procedure Neili official book (method) Showa 65L/4. ．． 248

Claims (1)

[Claims] 1. In a system in which workpieces are transported from a transfer station at the end of a processing line to a payout station at the end of the processing line by being suspended on a hanger, the intermediate portion of the transport path of the hanger is separated into an outgoing path and a return path. a point member for preventing the hanger from moving backward from the starting end portion to the returning path at a branching point of the outgoing path and the returning path with respect to the starting end portion of the conveyance path located on the transfer station; At the branching point of the outbound path and the return path with respect to the terminal end of the conveyance path,
A point member is provided to prevent the hanger from moving backwards from the terminal end portion to the outward path, and the plurality of hangers are connected from the starting end portion to the terminal portion via the outward path, and from the terminal portion to the returning path to the starting end. A workpiece conveyance device characterized in that the workpiece is conveyed between parts. 2. A conveyor chain for transporting hangers is provided on each of the outgoing path and the incoming path, and a reciprocating motion is provided to move the hanger in and out of the outgoing path and the incoming path from each of the starting end portion and the terminal end portion, respectively. 2. The workpiece conveying device according to claim 1, further comprising a freely movable conveying member. 3. The conveyance member includes a cart that is reciprocated by a cylinder along a running rail above the starting end portion and the ending end portion;
It consists of an engagement pin that can be freely engaged and detached from a hanger that is supported by the trolley in a vertically movable manner, and a cam that lifts the engagement pin to a predetermined position in the longitudinal direction of the upper surface of the traveling rail to disengage it from the hanger. 3. A workpiece conveyance device according to claim 2, further comprising: a workpiece conveyance device.