JPH0731936Y2 - Conveying device for articles on article assembly line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a conveyor device for conveying articles on an assembly line for assembling the articles.

(Prior Art) It is known that, in an automobile manufacturing factory or the like, articles such as a vehicle body are usually assembled by an assembly line having a plurality of assembly steps. In this vehicle body assembly line, a plurality of assembly work sections are arranged in series, and the vehicle body is placed or hung on a conveyor device such as a conveyor along each of the work sections and conveyed.

In recent years, in these assembly lines, assembling work by an automatic assembling machine such as a robot is increasing, and a highly accurate transfer device suitable for the highly accurate work of the automatic assembling machine is required.

Therefore, as a conventional conveying device used in such a vehicle body assembly line, Japanese Utility Model Publication No. 62-150415 and Japanese Utility Model Publication No.
A high-precision conveyor such as that disclosed in Japanese Patent Publication 62-150416 has been proposed.

In the carrying device, a plurality of carrier means on which a vehicle body is mounted are detachably engaged with a moving chain that is restricted in vertical movement by a rail provided along a work section for performing an assembly work. It moves along a section, which realizes highly accurate transportation.

However, when working with a vehicle body that is moving during transportation by an automatic assembly machine, equipment such as a sensor for correcting the position of the automatic assembly machine is required, which makes the structure of the automatic assembly machine complicated. was there.

Therefore, in order to further improve the accuracy of the work, in the section of the assembling work, the carrier means is separated from the drive chain to stop the carrier means, and the assembling work is performed on the stopped vehicle body placed on the carrier means. It is possible to do Further, it may be possible to stop the carrier and make it stand by immediately before the section of the assembling work by such an automatic assembling machine to shorten the carrying time.

However, when a plurality of the carrier means are moving in series on the assembly line, if one of the carrier means is stopped, another carrier means that is moving following the stopped carrier means, It is conceivable that the carrier means comes into contact with the stopped carrier means. Then, when the carrier means come into contact with each other, the vehicle bodies mounted on the carrier means may come into contact with each other. Therefore, in order to prevent such contact between the vehicle bodies, it is conceivable to individually provide the drive chains in each of the plurality of work sections and individually control the transport and stop of the drive chains. However, controlling each of these drive chains individually is complicated, and the device is complicated.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned inconveniences, and the present invention does not hinder the articles placed on the respective carrier means even if the adjacent carrier means come into contact with each other in the process of conveying the articles. An object of the present invention is to provide an article transport device for an article assembly line.

(Means for Solving the Problems) In order to achieve the above object, the present invention is to continuously mount a plurality of articles by individually placing a plurality of articles along each work section in which a plurality of assembly work sections are arranged in series. In an article conveying device of an article assembly line provided with a plurality of carrier means to
When adjacent carrier means that continuously conveys the articles come into contact with each other, an interval holding member that holds an interval between both carrier means is provided at least in front of or behind the carrier means, and the interval holding member is provided. Adjusting means for adjusting the length of the spacing member is provided in such a size that the spacing between the carrier means is a predetermined spacing, and the adjusting means includes a hollow fixing bar connected to the spacing member and the fixing member. A bar-shaped moving bar, a part of which is movably inserted into the bar, a plurality of locking portions formed at predetermined intervals in the longitudinal direction of the moving bar, and the fixed bar. It is characterized by comprising an engaging member which is detachably engaged with the engaging portion.

Further, a plurality of guide rollers are provided at intervals on the moving bar, and a pair of roller guide rails which rotate by engaging the guide rollers are provided at a rotation position of the guide rollers inside the fixed bar. It is characterized by that.

(Operation) When a plurality of carrier means are connected in a line on the assembly line to convey an article, the space holding member provided at least in front of or behind the carrier means, when adjacent carrier means contact each other, both carrier means Keep a distance from each other.
As a result, the adjacent carrier means are brought into contact with each other via the respective spacing members, and the articles placed on the respective carrier means are prevented from contacting each other. Further, the spacing means is provided with the adjusting means, and the spacing means expands and contracts the length of the spacing means to adjust the spacing of the carrier means to a predetermined size. When adjusting, move the moving bar in the longitudinal direction to adjust the protruding length of the moving bar from the fixed bar, and lock it at a position where the combined size of the protruding length and the fixed bar becomes a predetermined size. An engaging member is engaged with the portion to maintain a space between adjacent carrier means.

Further, the guide roller provided on the moving bar enables the moving bar to smoothly slide inside the fixed bar. Further, a pair of roller guide rails that rotate by engaging with the guide rollers are provided inside the fixed bar to facilitate insertion and removal of the moving bar to and from the fixed bar.

Embodiment An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic view of an assembly line including the carrying device of the present embodiment, FIG. 2 is an explanatory view showing a partial configuration of FIG. 1, FIG. 3 is a perspective view showing a part of FIG. FIG. 4 is an explanatory sectional view showing a part of FIG. 2, and FIGS. 5 to 8 are explanatory views showing a part of the apparatus of the present embodiment in an enlarged manner to explain its operation.

As shown in FIG. 1 and FIG. 2, the present embodied device 1 is used in an assembly line X composed of a plurality of work sections A, B, C, D, E, F, G, H arranged in series. A transport device for the vehicle body 2 that carries out the work in each of the work sections A, B, C, D, E, F on the vehicle body 2 while transporting the vehicle body 2 along it. As shown in FIG.
It is composed of carrier means 3 for mounting the vehicle body 2 and a carrier guide device 4 for guiding the carrier means 3 in the carrying direction of the vehicle body 2.

First, the configuration of each unit will be described in detail.

As shown in FIG. 3, the carrier guide device 4 includes first and second carrier guide devices 4 extending in parallel with each other in the transport direction of the vehicle body 2.
Carrier guide rail 6 and second carrier guide rail 7
And three carrier guide rails 6, 7, 8 which are composed of a central carrier guide rail 8 extending in the center thereof in parallel with both carrier guide rails 6, 7. The three carrier guide rails 6, 7, 8 are provided seamlessly from the upstream end to the downstream end of the first illustrated assembly line X.

As shown in FIG. 2 and FIG. 3, the carrier means 3 is moved between the first carrier guide rail 6 and the central carrier guide rail 8 at a low speed which is a carrier traction means for towing the carrier means 3 at a low speed. A chain 9 is provided, and between the second carrier guide rail 7 and the central carrier guide rail 8, a high-speed chain 10 that is a carrier towing means for towing the carrier means 3 at a high speed. Is provided. The low speed chain 9 and the high speed chain 10 are endlessly rotated by driving devices (not shown) having different speeds. Furthermore, both chains 9,10
Is rotated with its forward path side being exposed being exposed along the transport direction of the vehicle body 2.

As shown in FIGS. 3 and 4, the carrier means 3 includes a base carrier 11 on which the vehicle body 2 is mounted,
The base carrier 11 is provided with a vehicle body fixing pin 12 for fixing the vehicle body 2 when the vehicle body 2 is placed. Further, as shown in FIG. 3, the first carrier guide rail 6 is guided to the front end portion and the rear end portion of the side portion of the base carrier 11 which faces directly above the first carrier guide rail 6. A first guide rail device 13 is provided, and the base carrier 11 facing directly above the second carrier guide rail 7 is provided.
A second guide roller device 14 guided by the second carrier guide rail 7 is provided at the front end and the rear end of the side portion of the.

By the guide roller devices 13 and 14, the base carrier 1
1 is restricted in vertical movement and horizontal movement orthogonal to the first carrier guide rail 6 and the second carrier guide rail 7, and the first carrier guide rail 6 and the second carrier guide rail 6 and the second carrier guide rail 6 are restricted in the conveying direction only. It can be moved accurately along the carrier guide rail 7.

In addition, as shown in FIG. 4, a pair of central guides guided by the central carrier guide rails 8 are provided at the central front end portion and the rear end central portion of the base carrier 11 which are opposed to each other directly above the central carrier guide rail 8. A roller device 19 is provided. The central guide roller device 19 includes a vertical roller 20 for sandwiching the central carrier guide rail 8 in a pair in the vertical direction.
And a horizontal roller 21 for sandwiching the central carrier guide rail 8 in a pair from the horizontal direction.

Each central guide roller device 19 not only allows the base carrier 11 to move accurately in the carrying direction, but also when the vehicle body 2 is placed on the base carrier 11.
Distortion of 11 is prevented and it becomes possible to convey with higher accuracy.

Further, as shown in FIGS. 3 and 4, the central guide roller device 19 at the center of the front end of the base carrier 11 is
A spacing member 22 extending forward in the traveling direction of the carrier means 3 is connected, and a locking means 23 for engaging the low speed / high speed chains 9 and 10 and the base carrier 11 is provided at the tip of the spacing member 22. Has been.

As shown in FIGS. 3 and 4, the hooking means 23 is a guide roller device 26 which is guided by the central carrier guide rail 8.
On the left and right sides of the guide roller device 26, there are provided a pair of hooking members 27, 28 which are swingable in the vertical direction. Each hook member 2
7, 28 are located directly above the chains 9 and 10, the first hooking member 27 is on the low speed chain 9 side and the second is on the high speed chain 10 side.
A hook member 28 is provided. As shown in FIG. 3, a large number of attachments 29, 30 for engaging the both retaining members 27, 28 are provided on the both chains 9, 10 with a predetermined space therebetween. Has hooking portions 31, 32 which can be hooked on the attachments 9, 30. Furthermore, both hook members 2
Cam rollers 33 and 34 are provided on the disks 7 and 28, respectively.
As a result, the cam rollers 33, 34 are guided as described later to move the cams up and down, so that
It is possible to engage and disengage the 9,10 and the retaining members 27,28.

Further, as shown in FIGS. 3 and 4, the hooking means 23
A projecting member 35 is provided from the front end edge of the center of the guide roller device 26 toward the front in the traveling direction.
Can be inserted into.

Further, as shown in FIGS. 3 and 4, the central guide roller device 19 at the center of the rear end of the base carrier 11 is
An interval holding member 37 extending rearward in the traveling direction of the carrier means 3 is provided, and at the rear end of the interval holding portion 37, as described later, the hooking means provided on another succeeding carrier means 3 '. Engagement releasing means 38 for disengaging the engagement between 23 and the chains 9 and 10 is provided.

The engagement releasing means 38, as shown in FIGS. 4 and 5,
A vertical roller 39 for sandwiching the central carrier guide rail 8 from above and below, and the central carrier guide rail 8
Is provided with a guide roller device 41 composed of a pair of horizontal rollers 40 for sandwiching the guide roller from the horizontal direction. Cam rollers 33, 34 of latch members 27, 28
Guide 3 to engage with the attachments 29, 30
The guides 42 and 43 are provided so as to be inclined in a direction in which the attachments 1 and 32 are separated from the attachments 29 and 30.

Further, as shown in FIG. 5, the insertion member is inserted into the rear end portion of the center of the guide roller device 41 of the engagement releasing means 38, and the projecting member 35 provided in another succeeding carrier means 3'is inserted. A hole 44 is provided. Inside the insertion hole 44, a shock absorber 45 is provided, and the shock absorber 45 moves to another carrier means 3 which has moved following the stopped carrier means 3 as shown by the phantom line in FIG. A cushioning portion 36 is formed to cushion the impact when ′ is in contact.

Further, as shown in FIGS. 3 and 4, the space holding member 37 connecting the engagement releasing means 38 and the base carrier 11 corresponds to the shape and size of the vehicle body 2 mounted on the carrier means 3. Therefore, the adjusting means 46 capable of expanding and contracting the length of the spacing member 37 is provided. The adjusting means 46
As shown in FIG. 6, a hollow fixed bar 47 connected to the engagement releasing means 38 and a movable bar partially inserted inside the fixed bar 47 connected to the base carrier 11.
The moving bar 48 is provided with a plurality of guide rollers 49 at intervals so as to make the fixed bar 47 slide smoothly. Further, in order to accurately maintain the rotating position of the guide roller 49, a pair of guide rails 50 which are engaged with the guide roller 49 and rotate are provided inside the fixed bar 47. The fixed bar 47 has a spring
An engaging member 52a biased inward by 51 is provided so as to penetrate the fixing bar 47 from its outer surface to its inner surface.
52a is provided with a grip portion 52b. The move bar 48 has
A plurality of locking portions 53 are formed at predetermined intervals. Thereby, the grip portion 52b is pulled outward, the engaging member 52a is aligned with the locking portion 53 located at a predetermined size, and the engaging member 52a is inserted and attached by the bias of the spring 51, The length of the spacing member 37 is adjusted.

In this way, the length of the spacing member 37 is adjusted simply by inserting the engaging member 52a into the locking portion 53 located at a predetermined size, so that the spacing between the adjacent carrier means 3, 3 ' Can be changed easily. Therefore, when transporting another vehicle body having a different overall length from the vehicle body 2, the engaging member 52a is inserted into the locking portion 53 at a position corresponding to the overall length of the vehicle body, and the adjacent carrier means 3, 3 '. By changing the mutual distance, it is possible to easily and quickly cope with vehicles having different overall lengths.

On the carrier guiding device 4, as shown in FIG.
As will be described later, a stop means for stopping the carrier means 3 at a predetermined position, or a base carrier 11 is locked when the carrier means 3 is stopped, at the boundary between the work sections A and B or in the automatic assembly work section C. Locking means, engaging means for engaging the locking means 23 of the carrier means 3 and the carrier pulling means 9 or 10 in a stopped state, and switching between the locking means 23 of the carrier means 3 and the carrier pulling means 9 or 10. A plurality of change stoppers 54, which form a part of the speed switching means and the positioning means for positioning the base carrier 11, are provided. Further, on the upstream side corresponding to each of the change stoppers 54, a positioning feeder described later is provided.
55 is provided, and the positioning feeder 55 is paired with the change stopper 54 corresponding to the upstream side thereof to form a positioning means.

As shown in FIGS. 4 and 7, in the change stopper 54, a change cam 58, which is a roller guide member, is provided on a support 57 provided on a base 56 so that the change cam 58 can swing in the vertical direction. Below the change cam 58, a change cam drive cylinder that is a swing means for swinging the change cam 58.
59 are provided. The change cam drive cylinder 59
The cam roller 61 is attached to its tip through the rod 60 that expands and contracts.
Is provided, and the cam roller 61 is in contact with the lower portion of the change cam 58.

Further, the change cam 58 has a guide portion 63 on the upper side thereof, with which the cam roller 33 or 34 of the hooking member 27 or 28 contacts, and a raised portion 64 is formed on the downstream side of the guide portion 63. ing. The raised portion 64 acts as a stopping means of the carrier means 3, and after the cam roller 33 of the hook member 27 is guided from the upstream side of the guide portion 63, it is guided along the raised portion of the guide portion 63. Then, the cam roller 33
Removes the hooking portion 31 or 32 of the hooking member 27 from the attachment 29 or 30 of the chain 9 or 10 and releases the hooking to stop the carrier means 3.

Further, as shown in FIG. 7, a roller stopper 65, which is a locking means for locking the cam roller 33 or 34 of the locking member 27 or 28, is provided at the tip of the guide portion 63 of the change cam 58. It is provided.

Further, as shown in FIG. 7, the change cam 58
When the rod 60 of the change cam drive cylinder 59 is contracted, the cam roller 61 at the tip of the change cam drive cylinder 59 moves below the change cam 58, and the guide portion 63 moves downward. As a result, the cam roller 33 or 34 of the locking member 27 or 28 is guided downward. The change cam 58 corresponds to the hook member 27.
Alternatively, the hooking portion 31 or 32 of the cam roller 33 or 34 of 28 is engaged with the attachment 29 or 30 of the chain 9 or 10.

As shown in FIG. 7, the shock absorber 72 restricts the movement of the change cam stopper 54 having the above structure to the downstream side. Even if the carrier means 3 moves and suddenly contacts the change stopper 54, the shock absorber 72 absorbs the shock.

Further, as shown in FIG. 4, the change stopper 54
Corresponding to the above, a positioning feeder 55 is provided on the upstream side. As shown in FIGS. 4 and 8, the positioning feeder 55 has a frame 75 slidably provided on a rail 74 provided on a base 73, and an anti-back member 76 is provided on the frame 75.
Is pivotally attached by an axis 77. The anti-back member
The lower end edge 78 of the 76 is formed in a shape to be locked to the frame bottom plate 79, and the upper end edge 80 thereof is formed in the base carrier.
The central guide roller device 19 at the central portion of the rear end provided at 11
The upper end portion is lighter than the lower end portion in a shape that is locked to the rear end edge. The frame 75 has a wall plate 81 on the upstream side thereof, and is connected to a rod 83 of a feeder cylinder 82 provided on the base 73. As a result, the frame 75 moves in the front-rear direction due to the expansion and contraction of the rod 83.

In the positioning feeder 55, as shown in FIG. 4, the anti-back member 76 is freely swung during the passage of the central guide roller device 19 directly above the anti-back member 76, and the central guide roller device 19 is moved. pass. Immediately after the central guide roller device 19 has passed the position directly above the anti-back member 76, the lower end edge 78 of the anti-back member 76 swings by weight and is locked to the frame bottom plate 79. The upper edge 80 of the back member 76 is the central guide roller device.
Abut on the rear edge of 19. And the feeder cylinder
The rod 83 of 82 pushes the frame 75. As a result, the frame 75 slides on the base 73 in the carrying direction, and pushes out the carrier means 3 in the carrying direction via the anti-back member 76 and the central guide roller device 19. At this time, the above-mentioned cam roller 33 or 34 of the hooking member 27 or 28 is brought into contact with the locking member 71, the front of the carrier means 3 is gripped by the locking member 71, and the rear of the carrier means 3 is accurately gripped by the anti-back member 76. Be positioned at.

Further, as shown in FIG. 2, the assembly line X is provided with guide rails 84 and 85 along the passing positions of the cam rollers 33 and 34 of the locking members 27 and 28. The guide rails 84,85
Usually guides the cam roller 33 or 34 in a separated state where the hooking member 27 or 28 and the chain 9 or 10 do not engage with each other. Further, when it is provided at the boundary between the work sections B and C shown in FIG. 2, the cam roller 34 of the second hooking member 28 is provided.
A guide rail 85 that guides the latch member 28 to a position where it engages with the high-speed chain 10 via the cam roller 34, and at the same time, a guide rail 84 that guides the cam roller 33 of the first latch member 27. Guides the retaining member 27 to a position away from the low speed chain 9 via the cam roller 33. As a result, the guide rails 84, 85 can easily switch the engagement between the respective retaining members 27, 28 and the respective chains 9, 10 at the boundary between the work sections B, C shown in FIG.

The configuration of each unit of the present embodiment device 1 is as described above.

As shown in FIG. 1, the assembly line X provided with the present embodied apparatus 1 is configured by arranging a plurality of work sections A, B, C, D, E, F, G, H in series. There is. Specifically, A is a carry-in section for carrying the vehicle body 2 into the assembly line, B is a human assembly work section by a human work, C is an automatic assembly work section by an automatic assembly machine, and D is the same as the work section A. A human assembly work section by a person's work, E is an automatic assembly work section by an automatic assembling machine similar to the work section C, F is a carry-out section for carrying out the vehicle body 2 from the assembly line, G is a vehicle body on the carrier means 3. 2, a vehicle body transfer section where H is transferred, H is carrier means 3
It is a vehicle body payout section which is a payout position of the vehicle body 2 placed on the.

The assembly line X of this embodiment, which is composed of the above work sections A, B, C, D, E, F, G, H, is one of a plurality of production lines (not shown) in automobile production, and for convenience of explanation. It is an excerpt of only one assembly line. As for the vehicle body 2 to be assembled by the assembly line X of this embodiment, the doors are removed immediately before being carried into the assembly line X, and the doors are removed by another transport device (not shown) as shown in the first illustration. The assembly work is performed on the door assembly line Y in parallel with the main assembly line X.

The assembly work of the vehicle body 2 on the main assembly line X will be described step by step.

First, the vehicle body 2 transferred from another line by a transfer device such as a hanging conveyor (not shown) is placed on the base carrier 11 of the carrier means 3 in the vehicle body transfer section G, as shown in FIG. It is fixed with the pin 12 for fixing the vehicle body. Then, the carrier means 3 on which the vehicle body 2 is mounted is
It is transferred to the illustrated carry-in section A.

In the carrier means 3 that has moved to the conveying section A shown in the first figure, the second hooking member 28 is pulled by the attachment 30 of the high-speed chain 10 and the hooking portion 32 to be pulled, and moves in the conveying direction at a high speed. At this time, the first hooking member 27 has its cam roller 33
Is guided along the guide rail 84, and the hook portion 31 is moved away from the low speed chain 9.

Thus, the carrier means 3 is conveyed at a high speed to the boundary between the carry-in section A and the human assembly work section B.

At the boundary between the carry-in section A and the human assembly work section B, as shown in FIG. 2, the change stopper 54 is provided. The change stopper 54 is provided on a position where the second hooking member 28 of the carrier means 3 passes the cam roller 34, and the cam roller 34 is moved in a direction in which the attachment 30 of the high speed chain 10 and the hooking portion 32 are separated from each other. Guide and stop the carrier means 3. The stopped carrier means 3 is in a standby state for moving to the human assembly work section B. This standby state is for preventing the succeeding vehicle body 2 from being conveyed and assembling the transfer timing when the preceding vehicle body 2 is being assembled in the human assembly work section B. Is.

When another carrier means 3'following comes into contact with the carrier means 3 which has stopped and is in a standby state, the fifth means
As shown in the figure, the engagement releasing means 38 of the carrier means 3 releases the engagement between the locking means 23 of the other carrier means 3'and the chains 9 and 10 to stop the carrier means 3 '. Further, since the protruding portion 35 at the tip of the succeeding other carrier means 3'abuts on the buffer portion 36 at the rear end of the stopped carrier means 3, the stopped carrier means 3 can be pushed out by the impact due to the collision. Absent.

Then, the carrier means 3 is pushed out to the human assembly work section B.

In the human assembly work section B, as shown in FIG. 2, the carrier means 3 is pushed out by the positioning feeder 55, so that the cam roller 33 of the first hooking member 27 is guided by the guide rail.
It is opened at the cut portion of 84, and the hook portion 31 engages with the attachment 29 of the low speed chain 9. At the same time, the cam roller 34 of the second hooking member 28 is guided by the guide rail 85 so that the hooking portion 32 is moved away from the high speed chain 10.

The human assembly work section B is a section in which the vehicle body 2 is manually assembled by a person, but the carrier means 3 on which the vehicle body 2 is placed is pulled by the low speed chain 9 and is therefore being transported. Assembly work can be performed on the vehicle body 2 that is moving to.

At the boundary between the human assembly work section B and the automatic assembly work section C, as shown in FIG. 2, one guide rail 85 connects the cam roller 34 of the second hook member 28 to the hook portion 32 and the high speed chain.
The guide rail 84 is provided so as to be inclined in a direction in which it engages with the attachment 30 of 10, and in the direction in which the cam roller 33 of the first retaining member 27 separates the retaining portion 31 from the attachment 29 of the low speed chain 9. It is inclined. As a result, from the human assembly work section B to the automatic assembly work section C
Since the engagement of the carrier means 3 that moves to the respective hook portions 31 and 32 with the respective chains 9 and 10 can be switched, the transport speed of the vehicle body 2 of the carrier means 3 can be easily switched.

Then, in the automatic assembly work section C, the carrier means 3 is pulled by the high speed chain 10 and conveys the vehicle body 2 at a high speed.

As shown in FIG. 2, the automatic assembly work section C includes a vehicle body 2
For this, it is a section where assembly is performed by automatic assembly machines 100 and 101 such as robots. At each working position of the automatic assembling machine 100, 101, the change stopper 54 is provided with the second hook member 28.
It is provided on the passing position of the cam roller 34. Also,
A positioning feeder 55 is provided on the upstream side of each change stopper 54. The carrier means 3 pulled by the high speed chain 10 moves at a high speed and then is stopped by the change stopper 54. At this time, as described above, the cam roller 34 of the second hooking member 28 is brought into contact with the locking member 71, and the front of the carrier means 3 is locked by the locking member 71. An anti-back member 76 contacts the rear side of the carrier means 3, and at the same time, the anti-back member 76 is pressed and locked by the feeder cylinder 82 of the positioning feeder 55. In this state, the carrier means 3 is locked in the front-rear direction by the locking member 71 and the anti-back member 76, and is accurately positioned. By performing each work of the automatic assembly machines 100 and 101 in this state, highly accurate assembly work can be performed. As described above, in the automatic assembly work section C, the vehicle body 2 can be conveyed to the work positions of the automatic assembly machines 100 and 101 at high speed, and the vehicle body 2 can be positioned at the work position with high accuracy.

Also, at this time, as described above, stop and automatically assemble
When the succeeding other carrier means 3'abuts on the carrier means 3 performing the work by 100, 101, as shown in FIG. 5, the engagement releasing means 38 of the carrier means 3 is replaced by the other carrier means 3 '. The engagement between the retaining means 23 and the chains 9 and 10 is released to stop the carrier means 3 '. Further, since the protruding portion 35 at the tip of another succeeding carrier means 3'abuts on the buffer portion 36 at the rear end of the stopped carrier means 3, the stopped carrier means 3 is affected by the impact due to the collision. Never.

At the boundary between the automatic assembly work section C and the human assembly work section D, as shown in FIG.
Is provided so as to incline the cam roller 33 of the first hook member 27 in the direction in which the hook portion 31 and the attachment 29 of the low-speed chain 9 are hooked, and the other guide rail 85 is the cam roller of the second hook member 28. 34 is provided so as to be inclined in a direction in which the hooking portion 32 and the attachment 30 of the high-speed chain 10 are separated from each other. As a result, the speed of the carrier means 3 on which the vehicle body 2 is placed changes from high speed transfer to low speed transfer in the same manner as the speed switching at the boundary between the human assembly work section B and the automatic assembly work section C shown in FIG. Easily switched. In the human assembly work section D, as in the case of the human assembly work section A, a person performs an assembly work of the vehicle body 2.

Then, when the work of the work section D is finished and the work of each of the work sections E and F is finished as shown in FIG. 1, the carrier means 3 shifts to the vehicle body payout section H. When the carrier means 3 moves to the vehicle body payout section H, the vehicle body 2 is detached from the carrier means 3 by a carrier device that conveys the vehicle body 2 to a subsequent line (not shown), and the vehicle body 2 is carried into the next line. It

As described above, the vehicle body 2 is conveyed by the present embodiment at each of the work sections A, B, C, D, E, and F at the optimum conveyance speed, and the work sections A, B, C, D, and Assembly work of E and F is performed.
Further, the assembly work of the automatic assembling machines 100 and 101 is performed with high accuracy by the highly accurate positioning of the vehicle body 2 in the automatic assembling work section C, and the automatic assembling machines 100 and 101 have a high height so as to offset the elapsed time. The car body 2 is conveyed at a speed.

As a result, even if the transportation of the vehicle body 2 is stopped at the working position of the automatic assembly machines 100 and 101, the time required for transportation is not increased. Then, it is possible to smoothly perform the work of attaching the doors, which are removed from the vehicle body 2 just before being brought into the assembly line and are completely assembled on the door assembly line Y, to the vehicle body 2 completed on the assembly line. it can.

(Effects of the Invention) Therefore, according to the present invention, by providing the spacing member in each carrier means, even if the adjacent carrier means come into contact with each other, the predetermined spacing is maintained between the carrier means, and It is possible to prevent the placed articles from coming into contact with each other, and when the articles to be conveyed have different sizes, move the moving bar to attach the engaging member to the locking portion at a position corresponding to the dimension of the articles. Since the space between adjacent carrier means can be easily adjusted only by engaging them, it is possible to provide a conveying device that can easily and quickly deal with articles of different sizes.

The moving bar smoothly slides inside the fixed bar by a guide roller provided on the moving bar.
The rotation position and the fixed position of the bar guide roller can be accurately maintained by a pair of roller guide rails that rotate by engaging the guide roller inside the fixed bar. Can be done easily.

Further, according to the present invention, even if adjacent carrier means come into contact with each other in the course of conveying articles, the articles placed on the respective carrier means are not hindered. Thus, it is possible to provide the article transporting apparatus of the article assembling line capable of stopping the carrier and making it stand by, and shortening the transport time.

[Brief description of drawings]

FIG. 1 is a schematic view of an assembly line including the carrying device of the present embodiment, FIG. 2 is an explanatory view showing a partial configuration of FIG. 1, FIG. 3 is a perspective view showing a part of FIG. FIG. 4 is an explanatory sectional view showing a part of FIG. 2, and FIGS. 5 to 8 are explanatory views showing a part of the apparatus of the present embodiment in an enlarged manner to explain its operation. DESCRIPTION OF SYMBOLS 1 ... Conveying device 2 ... Car body (article) 3, 3 '... Carrier means 37 ... Spacing member 46 ... Adjusting means 47 ... Fixed bar 48 ... Moving bar 49 ... Guide roller 50 ... Guide rail 52a ... Engaging member 53 ... Engagement Stop

Claims (2)

[Scope of utility model registration request] 1. An article on an article assembling line, comprising a plurality of carrier means for individually placing a plurality of articles and continuously conveying the plurality of articles along each work section in which a plurality of assembly work sections are arranged in series. In the conveying device, when adjacent carrier means for continuously conveying the articles come into contact with each other, an interval holding member for holding an interval between both carrier means is provided at least in front of or behind the carrier means, The holding member is provided with adjusting means for adjusting the length of the spacing holding member so that the spacing between the two carrier means is a predetermined distance, and the adjusting means is a hollow fixing bar continuous with the spacing holding member. A rod-shaped moving bar, a part of which is inserted movably into the fixed bar, a plurality of locking portions formed at predetermined intervals in the longitudinal direction of the moving bar, and the fixed bar. Is provided on the Conveying apparatus of the articles of the article assembly line, characterized in that it consists of an engaging member for detachably engaging. 2. A pair of rollers, wherein a plurality of guide rollers are provided at intervals on the moving bar, and the guide rollers are engaged with and rotate at a rotation position of the guide rollers inside the fixed bar. A guide rail is provided, and the guide rail is provided.
An article transporting device for the article assembly line described.