JPH0620709Y2 - Conveyor device using moving body - Google Patents

Description

TECHNICAL FIELD The present invention relates to a transfer device using a moving body, which is adopted to transfer a body on a fixed path in an automobile assembly factory, for example.

2. Description of the Related Art As a conveying device of a type in which a traveling path of a moving body is formed above and a traveling drive device is arranged below, there is a conventional conveying device, for example, Japanese Utility Model Publication No. 60-3006. That is, in this conventional example, a drive trolley supported and guided via a wheel is provided on a guide rail, and a traveling drive device is configured by connecting the lower end of the drive trolley to a drive chain. According to this structure, when the indexing tool of the driving trolley is engaged with the dock on the driven trolley (moving body) side, the wheel of the driving trolley makes a large pressure contact with the guide rail diagonally forward and downward when the indexing travels. Forces act and therefore the guide rails must be arranged along the entire length of the path. By the way, the drive chain is not always strained between the pair of wheels due to elongation, design, arrangement error, etc. with use. To adjust this, for example, a take-up mechanism as disclosed in Japanese Utility Model Publication No. 54-1758 is adopted. In the guide rail, a take-up mechanism is formed as a movable part with respect to the fixed part of the straight path, and in order to fill the gap generated between the opposed free ends of the fixed part and the movable part at the time of adjustment, for example Extendable rails are interposed as seen in -20578.

Problems to be Solved by the Invention According to the conventional type as described above, the use of the telescopic rail complicates the structure and increases the cost.

The present invention provides a transfer device using a movable body that does not require a telescopic rail.

Means for Solving the Problems In order to solve the above problems, a transfer device using a moving body according to the present invention comprises a moving body that is supported and guided by rails and is movable along a guide below the rails. A traveling drive device supported and guided by rails, the traveling drive device being directed upward to the rear part of the side link in a proper position, and a link chain in which side links and center links are alternately connected by vertical pins. A fork formed integrally with each other, a pair of fork-shaped brackets vertically provided on each of a pair of center links connected to the front and back of a side link having the pair of drive projections, and a pair of brackets attached to the forked free ends of the brackets. Drive roller provided on the traveling drive device and a passive body provided on the movable body so as to be vertically swingable so as to be disengageable.

According to such a configuration of the present invention, when the driving protrusion and the passive body are engaged with each other and the moving body is caused to travel by the traveling drive device, the roller arranged in front of the side link having the driving protrusion is moved in the floating direction. Power can be applied.

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

Reference numeral 1 is a moving body supported and guided by a pair of left and right rails 2, and a connecting rod for connecting the front trolley 3, the second trolley 4, the third trolley 5, and the front trolley 3 and the second trolley 4 so as to be relatively swingable. 6 and a transported object support device 7 that also serves as a connecting rod between the second trolley 4 and the third trolley 5. Each of the trolleys 3 to 5 has a pair of front and rear trolley wheels 9 on both sides of the main body 8, and these trolley wheels 9 are supported and guided by the rail 2. Further, the main body 8 has guide rollers 10 which are guided to the upper and lower inner ends of the rail 2. The supporting device 7 which also functions as the connecting rod is
A frame body 12 having attachments 11 at a plurality of positions on the upper surface side, and a bracket 13 vertically extending from the front and rear portions of the frame body 12, and a connecting pin 14 standing from the second trolley 4 and the third trolley 5. The bracket through trunnion 15
Connected to 13. Reference numeral 16 denotes a body of an automobile, which is an example of an object to be transported, and a receiving tool 17 corresponding to the type of the body 16 is detachably attached to the attaching tool 11. On the lower part of the main body 8 of the front trolley 3, a vertically movable body 19 is attached via a horizontal pin 18. An intermediate portion of the passive body 19 is supported by the lateral pin 18, and the passive body 19 is urged by a weight so that the lower side becomes lower due to the displacement of the center of gravity. A passive surface 20 which is open downward and is upright is formed on the lower side, and a cam surface 21 for swinging against the weight bias is formed on the upper side. At the lower part of the main body 8 of the third trolley 5, a cam body 22 that acts on the cam surface 21 is connected rearward. A pair of left and right guide rails 23 are arranged below the rail 2 and the rails 2 and 23 are integrated by a yoke 24 arranged at a predetermined pitch. The traveling drive device 25 supported and guided by the guide rails 23 is a roller chain type, and a link chain 29 in which a pair of upper and lower side links 26 and one center link 27 are alternately connected by vertical pins 28, A drive protrusion 30 integrally and continuously provided upward (in a standing manner) from a side link 26 in a proper position, and a pair of front and rear center links 27 connected to the side link 26 having the drive protrusion 30.
And a roller 32 that is attached to the free ends of the brackets 31 and that is supported and guided by the guide rails 23. The bifurcated bracket 31 is a pair of left and right split members, and a spacer 33 is interposed therebetween so as to be integrated with a bolt nut 34,
The center link 27 is fixed in an up-down through hole formed in the center link 27 in an inserted state. By engaging the passive surface 20 with the drive protrusion 30, the moving body 1 can travel on the fixed path 35.

The traveling drive device 25 is hung between a pair of wheels via a link chain 27. That is, on one stationary part side, a vertical axis 37 is erected from the machine frame 36, and a bearing 38 is provided on the vertical axis 37.
The stationary wheel body 39 is attached via. The stationary portion side guide rail 40 facing the outside of the stationary wheel body 39 and having a U shape in plan view.
The stationary section side guide rail 40 is fixed to the machine frame 36. Further, the free end of the stationary portion side guide rail 40 may face the outer one of the pair of guide rails 23, and the facing portions may be connected to each other. In addition, a channel-shaped guide rail 41 connected to the inner one of the pair of guide rails 23.
Is arranged in a U shape in a plan view below the stationary wheel body 39. On the other movable part side, the movable wheel body 42 is arranged via a take-up mechanism 43. That is, a pair of left and right rails 44 are arranged on the machine frame 36, a movable base 47 guided by the wheels 45 and the guide rollers 46 is provided on these rails 44, and between the machine frame 36 and the movable base 47. A cylinder device 48 is interposed. And a vertical axis 49 is hung from the movable table 47, and this vertical axis
The movable wheel body 42 is attached to a bearing 49 via a bearing 50. In the take-up mechanism 43, a straight guide rail 51 connected to the outer one of the pair of left and right guide rails 23 is arranged along the moving path of the movable wheel body 42 and the machine frame 36.
An arc-shaped guide rail 52 fixed to the outer side of the movable wheel body 42 is arranged separately from the straight guide rail 51, and is fixed to the movable base 47. Further, a straight short guide rail 53 connected to the inner one of the pair of left and right guide rails 23 is disposed and fixed to the machine frame 36, and an outer end of the straight short guide rail 53 facing the free end is fixed. The straight guide rail 54 that it has is fixed to the movable base 47.
The inner end of the straight guide rail 54 extends to the vicinity of the movable wheel body 42, and a gap 55 whose distance is changed is formed between the outer end and the free end of the straight short guide rail 53. The inner guide rail facing the arc-shaped guide rail 52 is omitted. Reference numeral 56 indicates a drive unit.

Next, the operation of the above embodiment will be described.

When the driving projection 30 is engaged with the passive surface 20 of the passive body 19, the moving body 1 receives the driving force of the traveling drive device 25 and travels on the fixed path 35. When the preceding moving body 1 is stopped forward, the cam surface 21 of the passive body 19 of the traveling-side succeeding moving body 1 rides on the cam body 22 of the preceding moving body 1 to act passively. The body 19 swings around the lateral pin 18 so that the front part is lower, and the passive surface 20 drives the projection 30.
Will be out of. After that, the front trolley 3 of the succeeding moving body 1 collides with the third trolley 5 of the preceding moving body 1, whereby the succeeding moving body 1 is stopped in the non-passive state.

The traveling drive device 25 moves when the power of the drive unit 56 is applied to the link chain 29. At that time, the outer roller 32 among the inner and outer rollers 32 is guided by the guide rail 23, the straight guide rail 51, the arc-shaped guide rail 52, the straight guide rail 51, the guide rail 23, the stationary section side guide rail 40, and the guide rail. Further, the inner roller 32 includes a guide rail 23, a straight short guide rail 53, a pair of straight guide rails 54, 54,
It is guided by the straight short guide rail 53, the guide rail 23, and the channel guide rail 41. In the guided state, when the passive body 19 is engaged with the drive protrusion 30 as shown by the phantom line in FIG. 2, the roller 32 disposed in front of the side link 26 having the drive protrusion 30 is in the pulled state. A force in the rising direction (A) can be applied.

As a result, the roller 32 does not fall into the gap 55, and even if the take-up mechanism 43 is operated according to the looseness of the link chain 29 to widen the gap 55, there is no problem.

Effect of the Invention According to the present invention having the above-described structure, when the driving protrusion and the passive body are engaged with each other and the moving body is driven by the traveling drive device, the roller arranged below the link chain is subjected to a force in the floating direction. Means that the moving body can travel without applying a large pressure contact force to the guide rail. As a result, even if there is a gap in the guide rail that guides the roller, the roller will not fall into this gap. This means that even if the gap between the fixed part and the movable part of the guide rail, which occurs when the take-up mechanism provided to deal with the looseness of the link chain, is activated, it will not cause any problems. It is possible to eliminate the need for a telescopic rail that absorbs the gap, simplify the structure, and reduce the cost.

[Brief description of drawings]

The drawing shows one embodiment of the present invention, FIG. 1 is a side view, and FIG.
The drawing shows a side view with a part cut away of the main part, FIG. 3 is a front view with a part cut away, and FIG. 4 is a plan view with a part cutaway of the traveling drive device part.
FIG. 6 is a front view of the same portion with a cutout, and FIG. 7 is a schematic side view of the link chain. DESCRIPTION OF SYMBOLS 1 ... Moving body, 2 ... Rail, 7 ... Transported object support device, 16 ...
Body (transported object), 19 ... Passive body, 23 ... Guide rail,
25 ... traveling drive device, 26 ... side link, 27 ... center link, 28 ... vertical pin, 29 ... link chain, 30 ... drive protrusion, 31
... Bracket, 32 ... Roller, 33 ... Spacer, 35 ... Fixed path, 39 ... Stationary wheel, 40 ... Stationary guide rail, 41 ... Channel-shaped guide rail, 42 ... Movable wheel, 43 ... Take-up mechanism, 47 ... movable base, 48 ... cylinder device, 51 ... straight guide rail, 52 ... arc guide rail, 53 ... straight short guide rail, 54 ... straight guide rail, 55 ... gap, 56 ... drive unit.

Claims (1)

[Scope of utility model registration request] 1. A moving body which is supported and guided by a rail and is freely movable, and a traveling drive device which is supported and guided by a guide rail disposed below the rail. A link chain in which a link and a center link are alternately connected by vertical pins, a drive protrusion integrally formed upward at the rear portion of a side link at a proper position, and a pair of front and rear side links having the drive protrusion. Each of the center links of the fork-shaped brackets, and a pair of rollers attached to the two-forked free ends of the brackets. A transfer device using a moving body, characterized in that it is configured so that it can be freely engaged and disengaged with a passive body that is vertically swingable.