JP2003146267A - Assembly device for door inner panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembly device for a door inner panel narrowing an occupying space, constructing a low cost line, and having high production efficiency. SOLUTION: Five jigs 4 are disposed along the circumferential direction in a rotating support 3 which is intermittently rotated. In the periphery of the rotating support 3, a first work station 1st where the door inner panel 5 is fit to the jig 4 and a lean forcement is set to the door inner panel 5; a second work station 2st where the lean forcement is temporarily spot welded; a third work station 3st where a side collision protection beam 7 is set to the door inner panel 5 and temporarily spot welded; and a fourth work station 4st where the lean forcement and the side collision protecting beam 7 are additionally spot welded and after that the door inner panel 5 is removed from the jig 4 are arranged. The work stations 1st to 4st are provided at equal pitch in the circumferential direction in order so that the third work station 3st comes adjacent to the first work station 1st.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling apparatus for attaching a reinforcement and a side collision protection beam to a door inner panel of an automobile. 2. Description of the Related Art In addition to various reinforcements, a door inner panel of an automobile has one or more side impact protection beams (side impact beams) for the purpose of protecting an occupant from deformation of the door panel in the event of a side impact. ) Is attached. Conventionally, these accessory members are mounted on a door inner panel by arranging a plurality of work stations in a straight line and sequentially feeding a door inner panel positioned by a jig to each work station. In the case of a four-door passenger car, since there are four types of door inner panels, the assembling process of the door inner panels is also performed on independent lines (a total of four lines) for each door. [0004] However, arranging four lines increases the occupied space and increases the number of duplicated facilities because common operations are performed in each line. Therefore, there is much waste in space and cost. Further, when changing the type of vehicle (changing steps), it is necessary to change the jig. However, the replacement must be performed for each line, which takes a long time and greatly reduces production efficiency. It becomes a factor. SUMMARY OF THE INVENTION It is an object of the present invention to provide a door inner panel assembling apparatus which occupies a small space, can construct a low-cost line, and has a high production efficiency. [0006] To achieve the above object,
An assembling apparatus according to the present invention is an apparatus for sequentially transporting a door inner panel positioned by a jig to a plurality of work stations and welding and fixing at least reinforcement and side collision protection beams to the door inner panel. An odd number of jigs of 5 or more are arranged along the circumferential direction of the rotating support that is intermittently driven to rotate, and at least the door inner panel is attached to the jig around the rotating support. At the same time, the first work station for setting the reinforcement on the door inner panel, the second work station for performing the temporary tacking of the reinforcement, at least the side collision protection beam is set on the door inner panel, and the tapping is performed. The third work station, at least reinforcement and reinforcement of side collision protection beam At the same time, a fourth work station for removing the door inner panel from the jig is arranged, and the work stations are sequentially arranged at equal pitches in the circumferential direction so that the third work station is adjacent to the first work station. The door inner panel supported by each jig is sequentially fed to each work station by intermittent driving of the rotating support. An embodiment of the present invention will be described below with reference to FIGS.
A description will be given based on FIG. As shown in FIG. 1, a door inner panel assembling apparatus 1 according to the present invention includes a rotating support 3 which is intermittently rotated at a constant pitch by a suitable driving source such as a motor. The rotary support 3 includes a plurality of jigs 4 at different positions on the outer circumference in the circumferential direction. Each of the jigs 4 is detachably attached to the rotary support 3. The number of the jigs 4 is determined according to the number of types of the door inner panels 5 flowing on the line. As an example, in the present embodiment, four jigs 4 are used.
Is used as an example. Each jig 4 corresponds to the shape of four types of door inner panels 5 on the front driver's seat side (F1), the front passenger seat side (F2), the rear driver's seat side (R1), and the rear passenger seat side (R2). Each door inner panel 5 is positioned and supported by a corresponding jig 4. The rotary support 3 has a prismatic shape corresponding to the number of the jigs 4, and this embodiment illustrates a case where the rotary support 3 is formed in a substantially quadrangular prism shape. Around the rotary support 3, a plurality of work stations are arranged at different circumferential positions. In this embodiment, a case where four work stations 1st to 4st are provided as the work stations is illustrated. Rotating support 3 at constant pitch (pitch angle α = 90 °)
2 (a) to 2 (e), the jigs 4 and the door inner panel 5 supported by the jigs are sequentially fed to the work stations 1st to 4st. [0010] Of the work stations 1st to 4st,
In the first work station 1st, the door inner panel 5 (for example, the front driver's seat side F1) carried in by a carry-in device (not shown) is attached to the jig 4 by the worker 6. Next, it was similarly carried in by a carrying-in device (not shown),
The reinforcement corresponding to the door inner panel 5 is set at a predetermined position on the door inner panel 5 by an operator. Reinforcement is a component that increases the rigidity of the door panel itself, such as a hinge plate that reinforces a door hinge portion, a belt line plate that reinforces a belt line opening, a lock plate that reinforces a door lock portion, and the like. These reinforcements are locked by engaging portions (not shown) provided at respective mounting locations of the door inner panel 5, and are prevented from falling off. When the above operation is completed, the rotating support becomes one
Intermittently rotates by the pitch, door inner panel 5 (F1)
To the second work station 2st. At the same time, another jig 4 is transferred to the first work station 1st, so that the worker attaches the door inner panel 5 (for example, the rear driver's seat side R1) to this jig 4 and sets the corresponding reinforcement. (See FIG. 2B). The second working station 2st is a step of temporarily punching the reinforcement set in the first working station 1st by spot welding or the like. One or more (three in the drawing) welding robots 20 are arranged in the work station 2st, and the reinforcement is temporarily fixed to the door inner panel 5 by these welding robots 20. The door inner panel 5 having passed through the second work station 2st is conveyed to the third work station 3st by one pitch rotation of the rotary support 3. The third work station 3st is a step of setting the side collision protection beam 7 to the door inner panel 5 and performing temporary tacking by spot welding or the like. One or more (three in the illustrated example) side collision protection beams 7 are used, and all of them are attached to the outer surface of the door inner panel 5. These side collision protection beams 7 are transferred from the vicinity of the worker 6 of the first work station 1st to the third work station 3st via the carrying-in means 8 including a conveyor and a chute. The transferred side collision protection beam 7 is set at a predetermined position on the outer side of the door inner panel 5 by the handling robot 31. After that, each side collision protection beam 7 is temporarily hit by the welding robot 30 and temporarily fixed to the outer surface of the door inner panel 5. The door inner panel 5 having passed through the third work station is conveyed to the fourth work station 4st by rotating the rotary support 3 by one pitch. 4th work station 4
The step st is a step of performing reinforcement and side collision protection beam 7 by spot welding or the like, and removing the door inner panel 5 from the jig 4. Additional tapping is performed by the welding robot 40 arranged at the station 4st, and removal of the door inner panel 5 after welding is performed by the handling robot 41. Door inner panel 5 removed from jig 4
Is conveyed to the next step by an unillustrated carrying-out means. The jig 4 emptied by the carry-out of the door inner panel 5 is again carried into the first work station 1st by one-pitch rotation of the rotary support 3, and a new door inner on the front driver's seat side. Panel F1 'is the jig 4
(See FIG. 2E). Thereafter, by repeating the same procedure,
The four types of door inner panels (F1, R1, F2, R2) are sequentially transferred from the first work station 1st to the fourth work station, and the reinforcement and the side collision protection beam 7 are welded and fixed to the fourth work station, respectively. From the work station 4st, they are sequentially carried out to the next process. When the shape of the door inner panel 5 is changed by changing the vehicle type or the like, it is necessary to replace the jigs 4 mounted on the rotary support 3. This jig replacement is performed using the handling robot 51 arranged in the fourth work station 4st located immediately before the first work station 1st. That is, the door inner panel 5 supported by the rotary support 3 is
The jig 4 is removed by the robot 51 each time the jig 4 is carried into the st, and is carried out of the apparatus after the re-strike, and a new jig is attached to the rotary support 3. With the above configuration, the door inner panel assembling apparatus according to the present invention has the following advantages. Since each work station is arranged around the rotary support 3 and the door inner panel 5 is transferred to each work station by intermittent rotation of the rotary support 3, space efficiency is improved as compared with the conventional apparatus, and the line Smaller and more compact is possible. Even in the case of assembling the four types of door inner panels 5 as described above, if the jigs 4 corresponding to each panel shape and structure are provided on the rotary support 3, the rotary support 3 can be rotated. Just by doing so, the corresponding jig can be selected immediately. Therefore, a plurality of types of door inner panels 5 can be assembled on a single line, and the problem of the overlapping space and the overlapping equipment of the conventional device can be solved, and a compact and inexpensive line can be constructed. Since the moving distance between the adjacent work stations is shorter than that of the conventional linear line, the tact time can be shortened and the production efficiency can be increased. The rotary support 3 itself functions as a shield, and separates each robot from the manned area of the first work station 1st, so that the safety of the worker 6 is enhanced and a protective fence 9 for protecting the manned area is provided. Can be easily constructed. The jig exchange accompanying the step change can be easily and quickly performed at a fixed position by intermittently rotating the rotary support 3 even when a plurality of types of jigs 4 are used. Also, since the jig is replaced at the fourth working station 4st located immediately before the first working station 1st, if the rotary support 3 is rotated by one pitch, the door inner panel 5 is immediately attached to a new jig after the replacement. Can be attached, so that the time required for the step change can be shortened and the production efficiency can be increased. In the above embodiment, the case where four work stations are arranged around the rotary support 4 has been described. However, five or more work stations can be arranged around the rotary support 3. FIG. 3 shows an example of such a case, in which five working stations 1st to 5st are arranged on the outer periphery of the rotary support 3 at different circumferential positions. In this embodiment, the rotary support 3 has a pentagonal column shape, and five jigs 4 are mounted on the outer peripheral side face one by one. FIG.
As in the embodiment shown in FIG. 1, the rotary support 3 is intermittently driven at the same pitch, but the pitch angle α is set to 144 °. Of the work stations 1st to 5st, the first to third work stations 1st to 3st perform the same work as in the first embodiment shown in FIG. That is, in the first work station 1st, the attachment of the door inner panel 5 to the jig 4 and the setting of the reinforcement to the door inner panel 5 are performed, and in the second work station 2st, provisional tapping of the reinforcement is performed. Then, at the third work station 2st, the side collision protection beam 7 is set on the door inner panel 5 and temporarily set. In the fourth work station 4st, reinforcement and side collision protection beams 7 are additionally provided as in the first embodiment. However, unlike this embodiment, jig replacement is performed in the fifth work station 5st. . Correspondingly, the handling robot 51 for removing the jig has been moved to the fifth work station 5st. Each of the work stations 1st to 5st is arranged such that the door inner panel 5 supported by the rotary support 3 rotates by one pitch of the rotary support 3 and the first work station 1st to 5st.
The rotating support 3 is arranged in a circumferential direction at a pitch equal to the pitch angle 144 ° of the rotating support 3 so as to be sequentially transported from the st to the fifth working station 5st. Therefore, as shown,
Between successive work stations (for example, between the first work station 1st and the second work station 2st),
Another work station (for example, the fourth work station 4)
st) intervenes. In this embodiment, the door inner panel 5 is assembled in the same procedure as in the first embodiment. That is, as shown in FIGS. 4A to 4D, various door inner panels 5 are provided on the jig 4 of the first work station 1st.
(F1, R1, F2, R2) are sequentially carried in, and are sequentially attached to the corresponding jigs 4 by the operator. Due to the constant pitch rotation of the rotating support, the door inner panel 5 is moved to the second work station 2 as shown in FIGS.
st, the third station 3st, and the fourth working station 4st, and the fourth station 4st
And is carried out to the next process. And the jig replacement at the time of changing the stage is the 5th work station 5st
The jig after replacement is the first work station 1st
And a new door inner panel is installed immediately. In this embodiment, each station 1st
3 to 5 st are arranged so that the pitch angle becomes 144 °, as shown in FIG. It is arranged adjacently. Therefore, the worker 6 of the first work station 1st can directly set the side collision protection beam 7 for attachment to the carry-in entrance 10 of the third work station 3st, and the work is rationalized. Further, as in the first embodiment, a side collision protection beam 7 is provided at a third work station far from the worker.
Need not be conveyed, so that the carrying-in means 8 becomes unnecessary and the structure can be simplified. In order to arrange the third work station 3st adjacent to the first work station 1st in this manner, the work stations are installed at odd-numbered positions, and the pitch angle α between the continuous work stations is set to the following value. (N is the total number of work stations). Α = [(N−1) / 2] × [360 ° / N] Therefore, when the work stations are installed in more than five places, for example, in seven places, α = 15
It is desirable to set it to 4.3 °. In the above description, the assembling of the door inner panel 5 is exemplified. However, the apparatus of the present invention is not limited to this, and one or more accessory members are welded and fixed to a work having another shape and structure. It can also be used in this case, whereby the same effects as those described above can be obtained. Further, the work performed at each work station is merely an example, and other work may be performed at each work station, or any of the works may be omitted. As described above, according to the present invention, each work station is arranged around the rotary support, and the door inner panel is transferred to each work station by the intermittent rotation of the rotary support. Can be made smaller and more compact. In addition, since the third work station is adjacent to the first work station, the worker at the first work station manages not only reinforcement but also side impact protection beams set on the door inner panel. And work can be streamlined. Further, in general, when the third working station is located far away from the first working station, a carrying-in means for transferring the side collision protection beam from the worker side to the third working station is required. Then, such a carrying-in means becomes unnecessary.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a first embodiment of the present invention. FIG. 2 is a schematic plan view showing an assembling process by the assembling apparatus according to the first embodiment. FIG. 3 is a plan view showing the first embodiment of the present invention. FIG. 4 is a schematic plan view showing an assembling process by an assembling apparatus according to a second embodiment. [Description of Signs] 1 Assembly device 3 Rotary support 4 Jig 5 Door inner panel (work) 6 Worker 7 Side collision protection beam 8 Loading means 9 Protection fence 10 Loading section 20 Welding robot 21 Handling robot 30 Welding robot 31 Handling Robot 40 Welding robot 41 Handling robot 51 Handling robot for jig replacement

Claims (1)

Claims 1. An apparatus for sequentially transferring a door inner panel positioned by a jig to a plurality of work stations and welding and fixing at least a reinforcement and a side collision protection beam to the door inner panel. An odd number of jigs of 5 or more is arranged along the circumferential direction of the rotating support that is intermittently driven to rotate, and at least the door inner panel is fixed around the rotating support. The first work station that attaches the reinforcement to the door inner panel and sets the reinforcement on the door inner panel, the second work station performs at least reinforce temporary tacking, and sets at least the side collision protection beam on the door inner panel, The third work station to be beaten, at least for reinforcement and side protection beams Place a fourth work station where the punching is performed, and then remove the door inner panel from the jig, and sequentially arrange each work station in the circumferential direction so that the third work station is adjacent to the first work station. An apparatus for assembling a door inner panel, wherein the door inner panel supported by each jig is sequentially fed to each work station by intermittent driving of a rotating support provided at a pitch.