WO2005110837A1

WO2005110837A1 - Method and apparatus for carrying door in vehicle body assembly line

Info

Publication number: WO2005110837A1
Application number: PCT/JP2005/006901
Authority: WO
Inventors: Katsushi Takechi; Yukio Ishido; Kenji Tatsuda; Hisao Iwasa; Yasuo Miyaoka
Original assignee: Honda Motor Co., Ltd.
Priority date: 2004-05-18
Filing date: 2005-04-08
Publication date: 2005-11-24
Also published as: CN100429113C; JP2005329738A; JP4282545B2; CN1956875A

Abstract

[PROBLEMS] To provide a door carrying apparatus capable of reducing labor and enabling an equipment configuration with less installation area when door carrying operation is performed by utilizing workers. [MEANS FOR SOLVING PROBLEMS] Doors for one unit of vehicle removed from a vehicle body (W) are manually transferred to one hanger (5) of a door carrying conveyor line (4) at a door removal position (1x) in a main line (1) for vehicle body assembly and carried to a door sub assembly line (2). The doors are manually transferred onto a pallet in the door sub assembly line (2), and the sub-assembled doors are manually transferred to the hanger (5) and carried to a door mounting position (1y) in the main line (1). The doors are mounted on the vehicle body (W) at the door mounting position (1y). In this case, a hanger member (19) is rotated by 90° around a vertical axis at transfer parts (X), (P), (Q), and (Y) where the doors are mounted on and dismounted from the hanger (5) to change the attitude of the doors so that the transfer of the doors can be easily performed.

Description

Specification

Door transfer method and transfer device in vehicle body assembly line

Technical field

The present invention relates to a door transfer technique in a vehicle body assembly and production line.

Background art

Conventionally, a door is usually removed from a vehicle body in an initial process of an assembly line, transferred to a door hanger of a door transfer line, and then transferred to a small door assembly line. When the small assembly parts are assembled to the door in the small assembly line, the small assembly parts are transferred to the door hanger again, transported toward the mounting portion of the vehicle body assembly line, and then attached to the vehicle body at the door mounting location. As such a technology, for example, as shown in FIG. 7, a detaching point 51x for removing a door and an attaching point 51y for attaching a door are provided in the middle of a body assembly main line 51. In general, a device configuration in which two small door set lines 52 are arranged in parallel beside the line 51 is provided. Then, the left door small group is performed on one side of the slat conveyor line 52a of the door small group line 52, and the right door small group is performed on the other side of the slat conveyor line 52b. Between the attachment points 51y, two overhead door transport lines 53a, 53b are arranged in such a manner as to be close to the respective slat conveyor lines 52a, 52b, and the respective door transport lines 53a, 53b , And the hanger 54 can be freely driven.

Then, after removing the left and right doors from the vehicle body W at the removal point 51x, the left door is manually mounted on the hanger 54 of the left door transfer line 53a, and then the slat conveyor line 52a for assembling the left door is installed. The right door is manually mounted on the hanger 54 of the right door transfer line 53b, and then sent to the slat conveyor line 52b for assembling the right door. ing. Then, when the small set is completed in each of the slit conveyor lines 52a and 52b, the door is manually mounted on the hanger 54 again, and is conveyed to the mounting location 5ly through the respective door conveyance lines 53a and 53b.

[0003] On the other hand, in the above-described apparatus configuration, an operation of transferring a removed door to a nonger or transferring a door dropped from a hanger to a slat conveyor is performed manually. What A technology that automates the transfer operation is also known (for example, refer to Patent Document 1). In this technology, if the left and right doors are removed at the door removal points of the main line that transports the vehicle, one vehicle After automatically transferring the doors to a single hanger and transporting them to the door subassembly line by the overhead conveyor, for example, after automatically transferring the right door to the right door subassembly slat conveyor of the door subassembly line, the hanger The u-turn so that the left door is automatically transferred to the left door small slat conveyor of the door small assembly line, and the door small assembly line force is almost the same when automatically transferring the door to the hanger. As done in the configuration

Patent Document 1: Japanese Patent Application Laid-Open No. 4 358976

Disclosure of the invention

Problems to be solved by the invention

[0005] However, in the device configuration as shown in Fig. 7, two door transfer lines 53a and 53b are required, and the door hangers 54, which can not be operated by force as the occupied area increases, also need to be individually used for the left and right doors. Therefore, there was a problem that the cost was high. In this case, it is conceivable that the door for one vehicle is placed on the door hanger and transported by combining the door transport lines into one door.However, the door removed at the removal point 5 lx can be transferred to the door hanger 54, Transfer the doors on the door hanger 54 onto the pallets of the slat conveyor lines 52a and 52b, transfer the doors on the pallets of the slat conveyor lines 52a and 52b to the hanger 54, and place the doors on the hanger 54 at the mounting points 5 ly. When the doors are transferred to the vehicle body W, the distance for loading at least one of the doors becomes longer. .

[0006] On the other hand, in the case of the technology disclosed in Patent Document 1, it is necessary to lay the conveyor rails of the overhead conveyor long while meandering them, and to make the right door small group slat conveyor longer than the left door small group slat conveyor, which increases costs. In addition, there was a problem that the occupied area increased. Also, during mass production, operations such as transfer to a door hanger and transfer to a small door assembly line are performed automatically. For example, the door hanger power of the overhead conveyor and the transfer of the left and right door subassembly line to the door hanger line and the force of the left and right door subassembly line to the overhang conveyor door hanger are manually performed. In the case above As in the case of the example, there is a problem in that the number of man-hours required for transfer increases and the amount of human labor increases.

Accordingly, the present invention provides a door transport device that can reduce the labor required for humans, particularly when performing the door transfer operation using humans, and that can be configured with a small footprint. The porpose is to do.

Means for solving the problem

[0008] In order to achieve the above object, the present invention provides a door transfer method in which a door for one vehicle removed from a vehicle body at a door removal location of a main line for transporting the vehicle body is transferred to one hanger of a door transport conveyor. After transporting to the small group line, each door is put into the door small group line, and each completed small group door on the door small group line is received by the hanger and transported to the door mounting location on the main line. In the door transfer method, the hanger is rotated around a vertical axis at a transfer point where a door is mounted on or unloaded from the hanger, so that the hanger attitude is changed between when the door is transferred and when the door is transferred. I made it.

[0009] As described above, when the doors are transferred, the hanger is rotated about the vertical axis, so that the door for one vehicle can be simultaneously mounted on one hanger, or one vehicle can be transferred from one hanger to one hanger. This makes it easier to lower the doors at the same time, thereby reducing the labor required for transfer and at the same time consolidating the door transport conveyor into a single door. Since the conveyor can be shortened, space can be saved.

[0010] In the present invention, a rotation mechanism that can rotate the hanger around a vertical axis is provided as a device at this time at a transfer location in the middle of the door transport conveyor line.

Here, the transfer point in the middle of the door transfer conveyor line includes a place where the door for one vehicle removed from the vehicle body is mounted on the nonga, and a hanger for transferring the door to the pallet of the door small assembly line. This is where the doors are lowered, the doors in the small group are transferred to the Nounga, and the doors where the hanger power doors are lowered in order to reattach the doors to the vehicle body.

The invention's effect

[0011] After performing the work of removing the door, assembling the small assembly parts on the vehicle body assembly line, and attaching the assembled parts again to the vehicle body, a transfer point in the middle of the door transport conveyor is performed. By rotating the hanger around the vertical axis, the transfer of doors for one vehicle can be performed easily, reducing the labor involved in the transfer and reducing the number of doors. The concentrators can be integrated into one unit, and the power can be shortened because the door transport path can be shortened.

Brief Description of Drawings

FIG. 1 is a schematic diagram showing an example of a line configuration of a vehicle assembly line to which a door transfer device of the present invention is applied.

[Figure 2] Front view of door transfer device

[Figure 3] View A in Figure 2

[Figure 4] Internal perspective view of rotation phase determination unit

[Figure 5] View B in Figure 4

[FIG. 6] CC view of FIG.

FIG. 7 is an explanatory view showing an example of a line configuration of a conventional vehicle assembly line

BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described with reference to the attached drawings. Here, FIG. 1 is a schematic view showing an example of a line configuration of a vehicle assembly line to which the door transfer device of the present invention is applied, FIG. 2 is a front view of the door transfer device, and FIG. 3 is a view A of FIG. 4 is an internal perspective view of the rotation phase determining unit, FIG. 5 is a B view of FIG. 4, and FIG. 6 is a CC view of FIG.

[0014] The door transfer method and the transfer apparatus according to the present invention provide a method for removing a door from a vehicle body and transferring the door to a door small-group line on a vehicle assembly line, and at the same time attaching the door with the small group completed to the vehicle body. It is designed to reduce the equipment space of the door conveyor to transport and to reduce human labor when manually transferring doors.

[0015] As shown in Fig. 1, the vehicle body assembly line is provided with a vehicle body assembly main line 1 for transporting a vehicle body. In the middle of the main line 1, a door removal location lx and a door installation location ly are provided. At the same time, a small door assembly line 2 for assembling small assembly components to the door is provided on the side of the main line 1. The door subassembly line 2 has two parallel slat conveyor lines 2a and 2b for the left door subassembly and the right door subassembly. The pallet transports the door from the start end 3p to the end 3q of the feed conveyor lines 2a and 2b so that small assembly parts can be assembled! /

[0016] Then, from the transfer section X near the door removal location lx, a transfer section P near the starting end 3p of the slat conveyor lines 2a and 2b, a transfer section Q near the end 3q, and a transfer section near the door mounting location ly. An endless overhead conveyor line 4 for door transfer is provided to return to the transfer section X near the door removal location lx again via Y. This door transfer conveyor line 4 has one vehicle. A hanger 5 is provided on which the door can be mounted, and the conveyor line 4 for transporting the door between the transfer section X near the door removal location lx and the transfer section Y near the door installation location ly is the same as the main line 1. Being parallel.

As shown in FIG. 2, the hanger 5 includes a front trolley 7, a center trolley 8, and a trolley 9, which can run on a transfer rail 6 of a door transfer conveyor line 4. 8 is connected by a connecting rod 11, and the center trolley 8 and the ryatorol 9 are connected to a base frame 14 via respective support shafts 12, 13. The front trolley 7 and the center trolley 8 and the trolley 9 are supported by a support roller 15 and an anti-sway roller 16 on a transfer rail 6 having a U-shaped cross section, respectively.

A support column 17 is attached to the center of the base frame 14. The support column 17 is connected to an upper support column 17 a and a lower support column 17 b via a rotation phase determining unit 18. Te ru. The lower end of the lower support column 17b is joined to the center of the hanger member 19.

As shown in FIG. 3, front door support plates 21a and 21b for supporting left and right front doors Wf are provided on the front end side of the hanger member 19, and left and right rear doors are provided on the rear end side. Rear door support plates 22a and 22b for supporting Wr are provided. The left and right front door support plates 2 la and 21 b are provided with a mounting member 23 for mounting the lower end of the front door Wf and a support member 24 for supporting the hinge side of the front door Wf also with a forward force. Further, an oscillating support member 25 for supporting the latch portion side of the front door Wf also for rearward force is provided.

[0020] The left and right rear door support plates 22a and 22b are provided with a mounting member 26 for mounting the lower end of the rear door Wr and a support member 27 for supporting the hinge side of the rear door Wr also with forward force. In addition, an oscillating support member 28 for supporting the latch portion side of the rear door Wr with a rearward force is also provided. As shown in FIG. 4, the rotational phase determining section 18 has a disk member 29 attached to the upper end of the lower support column 17b, and six support columns at equal intervals on the circumference of the periphery of the disk member 29. 31 is fixed by bolts 32. A semi-disc member 33 having a semicircular hole slightly smaller in diameter than the disc member 29 and having a semi-circular hole through which the upper support post 17a can be inserted at the center is disposed on the upper portion of the support column 31. , And are fixed with bolts 32. In addition, on the lower surface of the center of each semi-disc member ₃₃ , there is provided a projection 34 protruding downward at a symmetrical position, and this projection 34 is arranged in the longitudinal direction. The base side force is formed in a substantially trapezoidal shape so as to taper toward the front end side. A cylindrical member 35 is attached to the outer periphery of the disk member 29 and the semi-disk member 33, and a pin member 36 is provided upright at the center of the disk member 29.

On the other hand, an index member 37 is attached to the lower end of the upper support column 17a that passes through the semicircular hole of the semi-disk member 33, and the projection 34 is attached to the periphery of the index member 37. Notch portions 38 which can be fitted are formed at four locations at equal intervals on the circumference. As shown in FIG. 6, the notch 38 has a shape corresponding to the shape of the projection 34 and is tapered from the upper surface to the lower surface in the length direction. ing.

A sleeve member 39 is press-fitted into the center of the index member 37, and the pin member 36 is slidably inserted into a through hole in the center of the sleeve member 39.

By the way, of the door transfer conveyor line 4 shown in FIG. 1, each transfer section X, Y, Ρ, Q has a rotation mechanism 40 (FIG. 2) for rotating the hanger 5 around a vertical axis. ) Is provided.

As shown in FIG. 2, the rotation mechanism 40 is provided on a turntable 42, a servomotor 43 for rotating the turntable 42, and a turntable 42 provided on a substrate 41. A hydraulic lifting cylinder 44 is provided, and a lifting disk 45 is attached to the rod end of the hydraulic lifting cylinder 44. When the lifting disk 45 is lifted, it comes into contact with the lower surface of the hanger member 19 of the hanger 5 so that the hanger member 19 can be lifted by a predetermined stroke.

[0024] Also, in the vicinity of the transfer rail 6 of the door transfer conveyor line 4, each transfer unit X, Υ, Ρ, A stopper device 46 and a limit switch 47 as shown in FIG. 3 are provided at a position corresponding to Q, while a rod 48 is attached to the front trolley 7 of the hanger 5. When the hanger 5 travels to the positions of the transfer sections X, Y, P, and Q, the rod 48 kicks the limit switch 47, and the stopper device 46 operates to stop the hanger 5. Has been made possible.

The operation and the like of the door transport conveyor line 4 configured as described above will be described.

First, when the empty hanger 5 reaches the position of the transfer section X near the door removal location lx, the rod 48 kicks the limit switch 47 and the hanger 5 is stopped by the stopper device 46. Next, the elevating cylinder 44 of the rotating mechanism 40 is extended, and the elevating disk 45 comes into contact with the lower surface of the hanger member 19 to raise the hanger member 19 and the lower support column 17b by a predetermined stroke.

As a result, as shown by a solid line from the state shown by the dashed line in FIG. 4, the projection 34 of the semi-disc member 33 that had been engaged with the notch 38 of the index member 37 was raised, The engagement between the upper support column 17a and the lower support column 17b is released, and then the turntable 42 is rotated 90 degrees by the servo motor 43, so that the hanger member 19 is oriented at right angles to the main line 1. Become.

Thereafter, when the lifting cylinder 44 is retracted and the lower support column 17b and the hanger member 19 are lowered, the projection 34 of the semi-disc member 33 engages with the notch 38 in which the phase of the index member 37 differs by 90 degrees. .

[0027] In this state, the left front door Wf and the left rear door Wr removed from the body W by the worker for the left door are mounted on the left front door support plate 21a and the left rear door support plate 22a of the nonger 5 and fixed. Then, the right front door Wf and the right rear door Wr removed by the worker for the right door from the vehicle body W are placed on the right front door support plate 21b and the right rear door support plate 22b of the nonger 5 and fixed.

At this time, since the hanger member 19 is oriented at right angles to the main line 1, the transfer work of both the left and right doors can be performed easily.

When the door for one vehicle is transferred to the hanger 5, the operator operates the switch to extend the hydraulic lifting cylinder 44. Then, the lifting disk 45 rises, and the hanger member 19 and the lower support column 17b are raised by a predetermined stroke, and the protrusion 34 and the index member 37 are raised. Is disengaged. Next, the servo motor 43 is operated, and the turntable 42 is rotated 90 degrees, and the direction of the hanger 5 is parallel to the main line 1. Next, the elevating cylinder 44 is retracted, the projection 34 and the notch 38 of the index member 37 are engaged, and the posture of the hanger member 19 is fixed. Then, in this state, the nonger 5 travels along the transfer rail 6 toward the door subassembly line 2.

Next, when the hanger 5 reaches the transfer portion P near the starting end 3p of the slat conveyor lines 2a and 2b, the rod 48 kicks the limit switch 47 and the hanger 5 is stopped by the stopper device 46. Next, the direction of the hanger member 19 of the hanger 5 is changed by 90 degrees in the same manner as described above, and in this state, the worker on the left slat conveyor line 2a moves the left front door Wf and the left rear door Wr to the left side. Remove from 5 and transfer to pallet on left slat conveyor line 2a. The worker on the right side slat conveyor line 2a removes the right front door Wf and the right rear door Wr from the nogger 5, and transfers them to the pallet on the right slat conveyor line 2b.

Next, the operator operates the switch to change the posture of the hanger member 19 of the hanger 5 to the original posture, and travels toward the transfer section Q near the end 3q side of the slat conveyor lines 2a and 2b. I do.

On the other hand, the left and right doors Wf and Wr transferred on the pallet flow through the respective slat conveyor lines 2a and 2b, and small assembly parts are assembled therebetween.

When the hanger 5 reaches the transfer section Q near the end 3q of the slat conveyor lines 2a and 2b, the posture of the hanger member 19 is changed by 90 degrees by the same procedure as described above, and the left and right doors of the small set are completed. Wf and Wr are transferred to hanger 5 by workers. When the transfer is completed, the posture of the hanger member 19 is changed by 90 degrees, and the vehicle travels toward the transfer portion Y near the door mounting location ly.

When the hanger 5 reaches the transfer section Y, the rod 48 kicks the limit switch 47 and the hanger 5 is stopped by the stopper device 46. Next, the direction of the hanger member 19 is changed by 90 degrees in the same manner as described above, and the hanger member 19 becomes a direction perpendicular to the main line 1. Then, the worker for the left door attaches the left front door Wf and the left rear door Wr on the hanger 5 to the vehicle body W, and the worker for the right door attaches the right front door Wf and the right rear door Wr on the hanger 5 to the vehicle W Attach to When all the doors are attached, the empty hanger 5 returns the hanger member 19 to the transporting state, travels toward the transfer section X near the door removal location lx, and performs this operation. Although the operation is repeated, the position of the hanger member 19 at the time of transfer is changed to a position that is easy to transfer, so that the transfer operation can be easily performed for both the left and right doors.

In addition, the door transfer conveyor line 4 is integrated into a single book, and the transfer path can be shortened, so that the installation space can be reduced.

[0034] The present invention is not limited to the above embodiments. Those having substantially the same structure as the matters described in the claims of the present invention and exhibiting the same effects are included in the technical scope of the present invention.

Industrial applicability

[0035] In the vehicle assembly line, when the door removed from the vehicle body is conveyed to the small assembly line, and the completed door is conveyed to the vehicle body for mounting, the door transfer portion may be used to transfer the door. By changing the posture, the work of transferring the door of one vehicle to the hanger can be performed easily, and the door conveyance rails can be integrated into one rail and the force can be shortened to save space. Can be

Claims

The scope of the claims

[1] After transferring the door for one vehicle removed from the vehicle body at the door removal point of the vehicle body main line to one hanger of the door transportation conveyor and transporting it to the door small assembly line

A door conveying method, wherein each door is put into a door sub-unit line, and each door completed in the door sub-unit line is received by the hanger and conveyed to a door mounting location of the main line, A vehicle body characterized in that the hanger is rotated around a vertical axis at a transfer point where a door is mounted on or unloaded from the hanger, and the posture of the hanger is changed when the door is conveyed and when the door is transferred. Door transportation method in assembly line.

[2] After removing the door of one vehicle removed from the vehicle body at the door removal point of the vehicle body main line, it was transferred to one hanger of the door transportation conveyor and transported to the door small assembly line. A door transfer device, wherein the doors are inserted into the door sub-assembly line, and each of the doors completed in the door sub-assembly line is received by the hanger and conveyed toward the door mounting portion of the main line. A door transfer device in a vehicle body assembly line, wherein a rotation mechanism capable of rotating the hanger around a vertical axis is provided at a transfer location in the middle of the transfer conveyor line.