JPH0442234B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Industrial Field of Application The present invention provides a system in which both bottom parts of a vehicle body are mounted on a pair of support parts that are supported in an openable and closable manner on a frame that can run along a ceiling rail. an overhead conveyor in which one end of a loading section extending in the longitudinal direction of the vehicle body is connected to each other, a pair of receiving members extending in the longitudinal direction of the vehicle body to receive the left and right bottoms of the vehicle body, and both receiving members. The present invention relates to a vehicle body transfer device for transferring a vehicle body between a traveling trolley having a pair of guide posts whose one end is supported in a vertically movable manner and capable of traveling on a floor surface.

(2) Conventional technology In the past, in the automobile assembly process, after the engine, wheels, etc. were attached to the vehicle body while being transported by an overhead conveyor, the vehicle body receiving section was installed on a slat conveyor with the same width as the wheels. The vehicle body is being transferred to.

(3) Problems to be Solved by the Invention However, when transporting vehicle bodies using an overhead conveyor, the longitudinal direction of the vehicle body always coincides with the transport direction, making it difficult to automate the assembly of parts.

Therefore, the present applicant has proposed a technology in which a vehicle body is mounted on a traveling trolley whose height can be adjusted so that the direction of the vehicle can be changed by 90 degrees. By changing the height and height, automation of parts assembly work is facilitated.

However, even if a traveling trolley is used in the assembly process, the painting process, which is the process that precedes the assembly process, requires the vehicle body to be transported by an overhead conveyor. A device that can be transferred to another location is required.

Moreover, with overhead conveyors, it is necessary to make sure that there are no obstacles on either side of the car body in order to facilitate various operations on the car body during conveyance.
-As already known in Publication No. 24019,
It is desirable that the bottoms of both sides of the car body can be placed on it, and the placing part extending in the front and rear direction of the car body can be opened and closed and cantilevered by the frame. In order to facilitate work on the car body during transportation and to ensure that there are no obstacles on both sides of the car body, one end of the receiving member extending in the longitudinal direction of the car body to receive the bottoms of both sides of the car body can be raised and lowered. It is desirable to be cantilever supported. However, as described above, if the overhead conveyor supports the bottoms of both sides of the car body over a relatively large length, and the traveling bogie also supports the bottoms of both sides of the car body over a relatively long length, When transferring the car body from the overhead conveyor to the running cart, as disclosed in Japanese Patent Laid-Open No. 60-183425, elevating frames on both sides of the car body move up and down to transfer the car body. In the drop lifter, the lifting frame interferes with the mounting portion of the overhead conveyor and the receiving member of the traveling truck.

To solve this kind of problem, a simple idea would be to use a lifter that raises and lowers a platform that can be raised and lowered between both loading parts of the overhead conveyor and between both receiving members of the traveling cart. . However, if such a lifter is fixedly disposed, it becomes difficult for the traveling truck to pass through the transfer position below the overhead conveyor.

The present invention has been made in view of the above circumstances, and is designed to provide a vehicle between an overhead conveyor and a traveling bogie, which are configured to respectively support the bottom portions of both sides of a car body over a relatively large distance in the front-back direction. It is an object of the present invention to provide a vehicle body transfer device which allows a vehicle body to be smoothly transferred without interfering with the running of a traveling truck.

B. Structure of the Invention (1) Means for Solving the Problems The device of the present invention waits at a transfer position set below the overhead conveyor with both receiving members aligned along the conveyance direction of the overhead conveyor. A support with a width smaller than the spacing between both receiving members is attached to a support installed on a base that is movable between a position corresponding to the traveling cart and a position retracted to the side perpendicular to the transport direction. The lifter is provided with a lifter in which a mounting table for receiving the vehicle body is supported so as to be movable up and down.

(2) Effect The vehicle body is transported to the transfer position by the overhead conveyor, but at this time, a traveling truck is waiting at the transfer position, and the loading platform is moved between the loading section of the overhead conveyor and the traveling truck. After moving the lifter to the transfer position with the mounting platform raised to a position corresponding to between the guide posts, the vehicle body is transferred from the overhead conveyor to the traveling trolley by raising and lowering the mounting platform of the lifter. Ru. Moreover, since the mounting table moves up and down between both receiving members, both placing parts of the overhead conveyor and both receiving members of the traveling cart do not get in the way of raising and lowering the mounting table, and the base of the lifter is placed on the side. By retreating to the location, there is no problem with the traveling trolley passing through the transfer position.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2, a vehicle body 1 is conveyed to a transfer position P by an overhead conveyor 2. In FIGS. A traveling carriage 3 is waiting at the transfer position P, and the vehicle body 1 is transferred from the overhead conveyor 2 to the traveling carriage 3 by a lifter 4.

The overhead conveyor 2 has a ceiling rail 5,
a frame 6 running along the ceiling rail 5;
It consists of a pair of left and right arms 7 supported by the frame 6 so as to be openable and closable. The ceiling rail 5 is formed in a channel shape and extends on the ceiling, and a plurality of rollers 9 that are rotatably engaged with the ceiling rail 5 are attached to support fittings 8 that are respectively protruded from the front and rear upper portions of the frame 6. is pivoted. Therefore, the frame 6 can run along the ceiling rail 5.

Each arm 7 includes a support section 10 that extends vertically, and a mounting section 11 that extends horizontally from the lower end of the support section 10 toward the rear along the conveyance direction 12 in a substantially L-shape. The upper end of the frame 10 is supported by the front part of the frame 6 so as to be openable and closable by a support shaft 13 having a horizontal axis along the conveyance direction 12 . Both arms 7 are arranged such that the distance between both supporting parts 10 is greater than the width of the vehicle body 1 in the closed state, and the left and right bottoms of the vehicle body 1 are placed on the mounting parts 11 of the arms 7, respectively. It will be posted.

An extending rod 14 is protruded from the upper part of each arm 7, and a guide roller 15 is provided at the tip of the extending rod 14.
is pivoted. This guide roller 15 is a guide rail (not shown) extending parallel to the ceiling rail 5.
The guide rail is discontinued at a position corresponding to the transfer position P set for transferring the vehicle body 1, and there is a fitting into which the guide roller 15 can be fitted. A joining member 16 is arranged. This fitting member 16 is fixed to the tip of a piston rod 18 in a cylinder 17 arranged at a fixed position.
By contracting the cylinder 17 in a state where the arms 5 are fitted, both arms 7 are rotated in the opening direction.

The traveling truck 3 has a rectangular base 19, and a pair of guide posts 20 are erected on the base 19 with a distance larger than the width of the vehicle body 1 between them. Moreover, one end of a pair of receiving members 21 extending in the front-rear direction of the vehicle body 1 to receive both side bottom portions of the vehicle body 1 over a relatively large length is connected to both guide posts 20.
Each is supported so that it can be raised and lowered. Also, base 19
Multiple wheels (not shown) are attached to the
The traveling trolley 3 can run on the floor surface 22 in either of two mutually orthogonal directions.

The lifter 4 has two positions in front of the transfer position P along the transport direction 12, corresponding to the traveling cart 3 waiting at the transfer position P, and a position where it retreats to the side in a direction perpendicular to the transport direction 12. It is arranged so that it can be moved between.

In order to move the lifter 4, a groove 23 extending in a direction perpendicular to the conveyance direction 12 is provided in the floor surface 22, and a rack 24 extending in the longitudinal direction of the groove 23 is fixed at the bottom of the groove 23. be done.

The lifter 4 has a base 25 inserted into the groove 23, and a plurality of pinions 26 meshing with the racks 24 are rotatably mounted on the base 25. Furthermore, a motor 27 with a reduction gear fixed to the base 25 is connected to one of the pinions 26 . Therefore, by operation of the motor 27, the base 25 can be moved in the longitudinal direction of the rack 24 or groove 23.

A single column 28 is erected on the base 25 so as to be higher than the guide post 20 in the traveling carriage 3. This support 28 is formed in the shape of a square prism,
On both sides of the column 28, there are racks 2 extending vertically.
9 are fixedly installed respectively.

A rectangular cylindrical slider 30 is arranged surrounding the column 28, and each rack 2 is placed inside this slider 30.
A plurality of pinions 31 meshing with the pinions 9 are rotatably disposed. Furthermore, one of the pinions 31 is connected to a motor 33 with a reduction gear. Therefore, the slider 30 is moved up and down by the operation of the drive source.

A mounting table 32 for receiving the vehicle body 1 is provided on the side of the slider 30 to protrude laterally. This mounting table 32 is arranged so as to protrude toward the traveling carriage 3 side when the lifter 4 moves to a position corresponding to the traveling carriage 3 at the transfer position P. The width of the mounting base 32 is set to be smaller than the interval between both receiving members 21 in the traveling carriage 3.

Next, the operation of this embodiment will be explained. When transferring the vehicle body 1, the traveling trolley 3 is kept on standby at the transfer position P. At this time, both receiving members 21 are parallel to the conveying direction 12 and are lowered to the lowest position. Further, the lifter 4 is retracted to the side, and the mounting table 32 is at the lowest position.

In this state, the car body 1 is moved to the overhead conveyor 2.
It is transported to the transfer position P and stops directly above the traveling trolley 3. At this time, the guide roller 15 is fitted into the fitting member 16.

Next, the mounting base 32 of the lifter 4 is placed on the traveling trolley 3.
The lifter 4 is raised to a position higher than the guide post 20 and lower than the mounting part 11 of the arm 7 on the overhead conveyor 2, and then the lifter 4 is moved to a position corresponding to the traveling carriage 3.

When the lifter 4 stops at a position corresponding to the traveling carriage 3, the mounting table 32 is further raised and the vehicle body 1 placed on the mounting section 11 of the overhead conveyor 2 is lifted.
is lifted on the mounting table 32. As a result, the vehicle body 1 has been transferred from the overhead conveyor 2 to the lifter 4.

After the vehicle body 1 is placed on the lifter 4, the cylinder 17 is contracted to open the arm 7, so that the descent of the vehicle body 1 will not be hindered. Next, the mounting table 32 is lowered, and the lowering is stopped immediately before the vehicle body 1 is placed on the receiving member 21 of the traveling trolley 3.

Therefore, when the receiving member 21 of the traveling trolley 3 is raised, the vehicle body 1 placed on the mounting table 32 is moved to the receiving member 21.
The vehicle body 1 is lifted from the lifter 4 to the traveling trolley 3.
will be transferred to. In this state, the traveling trolley 3 starts traveling in the opposite direction to the transport direction 12, and the vehicle body 1
is transported to the next process.

Finally, the arm 7 is moved along the ceiling rail 5 and the lifter 4 is returned to its original retracted position, thereby completing the series of operations associated with the transfer of the vehicle body 1.

In this way, the car body 1 is smoothly transferred from the overhead conveyor 2 onto the traveling truck 3, and since the lifter 4 is in the retracted position, the next traveling truck 3 can be moved to the transfer position P. Lifter 4 does not get in the way of coming.

In the above embodiment, the receiving member 21 is raised when transferring the vehicle body 1 from the lifter 4 to the traveling truck 3, but the mounting table 32 is moved higher than the receiving member 21 without moving the receiving member 21. It is also possible to move the vehicle body 1 from the mounting table 32 to the receiving member 21 by lowering it downward.

C. Effects of the Invention As described above, the device of the present invention is located at a position corresponding to a traveling cart waiting with both receiving members aligned in the conveying direction of the overhead conveyor at a transfer position set below the overhead conveyor. The vehicle body is mounted on a support set up on a movable base with a width smaller than the spacing between both receiving members. Since a lifter is provided on which a mounting table for receiving the vehicle is supported so as to be movable up and down, the vehicle body can be smoothly moved between the overhead conveyor and the traveling trolley, which respectively support the bottoms of both sides of the vehicle body over a relatively large distance in the front and rear direction. Since the lifter base can be retracted to the side from the position corresponding to the transfer position, the lifter does not get in the way of the traveling trolley, and the moving route of the traveling trolley can be improved. can be freely set according to various tasks.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional side view, and FIG. 2 is a sectional view taken along the line -- in FIG. 1. 1...Car body, 2...Overhead conveyor, 3
... Traveling trolley, 4 ... Lifter, 5 ... Ceiling rail, 6 ... Frame, 10 ... Support part, 11 ...
Placing section, 12...Transportation direction, 20...Guide post, 21...Receiving member, 22...Floor surface, 25...Base, 28...Strut, 32...Placement table, P...Transfer position.

Claims (1)

[Claims] 1 Frame 6 that can run along ceiling rail 5
an overhead conveyor 2 in which one end of a placing part 11 extending in the front-rear direction of the vehicle body 1 is connected to a pair of support parts 10 which are supported so as to be openable and closable on a pair of support parts 10, each of which has one end connected to the bottom of the vehicle body 1 on both sides thereof; It has a pair of receiving members 21 extending in the longitudinal direction of the vehicle body 1 to receive the left and right bottom portions of the vehicle body 1, and a pair of guide posts 20 that support one end of both the receiving members 21 so as to be movable up and down, so that the vehicle can run on a floor surface 22. between the traveling trolley 2,
In an automobile body transfer device for transferring a vehicle body 1, both receiving members 21 are placed at a transfer position P set below the overhead conveyor 2 in a posture along the conveyance direction 12 of the overhead conveyor 2. The position corresponding to the waiting traveling cart 3 and the transport direction 1
The vehicle body 1 is mounted on a support 28 erected on a base 25 that is movable between a side retracted position on the side perpendicular to the support member 2 and A vehicle body transfer device characterized by comprising a lifter 4 on which a mounting table 32 for receiving the vehicle is supported so as to be movable up and down.