JP2000302225A - Conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly travel a conveyor device by small power when it circulates by reducing the turning radius at curved parts and eliminating the occurrence of noise or ducts due to friction. SOLUTION: This device is made up of guide rails 10, 10A provided with at least two circular arc-like curved parts, and arranged in endless manner, a large number of carrier 20 which are guided by the guide rails 10, 10A to be able to circulate and which are connected by linkages, and a driving means (by engagement of a sprocket with rollers attache to carriers) for driving the carriers 20 connected by the linkages. The carriers 20 are provided with plural sets of guide rollers along the guide parts at the curved parts of the guide rails 10, 10A, and a connecting floating part is formed at least at one place at the connection parts connected in endless manner by the linkages.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device, and more particularly, to a conveyor device in which a large number of carriers are chained on a guide rail so as to smoothly circulate.

[0002]

2. Description of the Related Art Conventionally, as a conveyor line on which articles are loaded and conveyed on a flat surface, a conveyor chain with an attachment having a flat top plate on an upper surface is used.
A type in which the top plate portion is slidably supported on a sliding frame and travels by driving with a sprocket is known. Such a type of conveyor line generally has a structure that moves linearly.

[0003] As a form in which the conveyor circulates and moves on a plane, a universal chain in which a top plate on which a conveyed object such as an article is moved so as to be rotatable in a horizontal direction at a connecting pin portion is used as a corner sprocket. Are driven by sliding around a curve.

[0004] In such a conveyor line, a sliding frame serving as a traveling path has a relatively rough structure, and a structure in which a meander during traveling can be driven with a sufficient margin is provided. I have. In addition, in order to facilitate driving of the conveyor when traveling, there is a configuration in which a roller is attached to a link of the conveyor chain to roll on a traveling path.

[0005]

However, in the conventional conveyor line which is generally used and moves and circulates in the horizontal direction as described above, the allowable horizontal rotation of the chain to which the top plate is attached is very small. Therefore, when performing a curved movement, it is necessary to perform a rotational displacement with a large radius. Therefore, there is a problem that it is difficult to make a small turn. Furthermore, since the slider slides on the sliding frame and the amount of play (play allowance) at the connecting portion is required due to the structure of the chain, it often meanders at the time of driving. However, there is a problem that power is consumed more than necessary.

Also, as described above, noise is generated during running due to play at the connecting portion and sliding on the sliding frame, and dust is generated due to abrasion, which is a factor of deteriorating the working environment. ing.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and can reduce a turning radius at a curved portion, thereby eliminating generation of dust due to noise and friction, and smoothly using small power during circulating traveling. It is an object of the present invention to provide a conveyor device with high mechanical efficiency that enables comfortable traveling.

[0008]

Means for Solving the Problems and Functions / Effects The conveyor apparatus according to the present invention, which has been made to achieve such an object, is arranged endlessly with at least two arcuate curved portions. A guide rail, a number of carriers connected by a connecting rod so as to be guided by the guide rail and circulate, and a driving means for driving the connected carrier; It is characterized by comprising a plurality of sets of guide rollers which are guided along the guide portion by a curved portion, and a connecting floating portion is formed at at least one position in a connecting portion of the connecting rod which is connected endlessly. Things.

According to the thus configured conveyor apparatus of the present invention, when a large number of carriers linked on the guide rail and traveling on the guide rail move from the straight portion to the arc-shaped curved portion, they are connected. When the carrier pitch is more curved than that of the straight part, the difference in the radius of rotation on the center line occurs due to the displacement and displacement of the polygonal shape. From the accuracy, etc., an error occurs in the dimension at the connection part, and when it is connected endlessly, the length connecting the connection parts of all the carriers changes and it becomes impossible to drive smoothly, By providing the connecting floating portion at the connecting portion of the connecting rod, the length is automatically adjusted at the corresponding portion, so that the direction change at the meshing drive unit such as a sprocket can be performed at all without difficulty. It's an effect that kill.
The connecting floating portion at the connecting portion by the connecting rod does not have to be provided at all connecting portions. If at least one portion is provided, the connecting floating portion is sequentially adjusted at the connecting floating portion to achieve the intended purpose. .

Further, the carrier according to the present invention has a lower plate for supporting a plurality of sets of guide rollers guided by guide rails, and a base plate disposed at an appropriate interval above the lower plate. Between the base plate and the center axis of the carrier in the traveling direction of the carrier, two pivots are provided at two positions so that the center is located on a line connecting the axes of the guide rollers located on both sides. It is characterized by the following. In this case, the attachment of the carrier for mounting the object to be carried on the base plate of the carrier is not obstructed by the pivot portion of the connecting rod, and therefore, there is a problem when the direction of the connected carrier is changed. You can travel freely without having to do so. In addition, the carrier is arranged at the center position on the line connecting the axis of the guide roller, which is provided so that the pivot portion of the connecting rod comes into contact with the guide rail from both sides and is guided. When moving along a curved part, even if the inner and outer guide rollers contacting the inner and outer peripheral sides of the guide rail have different moving distances, the connected state can be maintained without any trouble. And can run smoothly. Further, when a bogie type guide roller is used, there is an effect that mounting of the guide roller unit is facilitated.

Further, the carrier is provided with a power transmission member at an intermediate position between pivot portions of a connecting rod provided between a base plate and a lower plate, and at a position deviated from a longitudinal center line thereof. Is good. Further, the power transmission member is preferably a roller to which a driving force is applied by a driving unit. Preferably, the driving means is a sprocket that meshes with a roller of a power transmission member attached to the carrier. By doing so, the roller as the power transmission member is meshed with the sprocket as the drive means, so that a number of connected carriers are directly wound around the sprocket, and the power transmission is performed. This has the effect that the operation can be performed reliably.

In the present invention, a cover is provided above the base plate of the carrier, the cover being supported by a pivotal support provided on one side thereof and capable of being opened upward,
The cover is opened or closed by opening / closing means provided along a traveling path at a required position. In such a configuration, for example, if a cover is attached to the carrier as a conveyor for transporting food, a dustproof effect against external dust and the like during transportation can be obtained, and the cover can be opened and closed at a position where the transported product is taken out. By means, for example, if the cover is automatically opened, the workability can be improved. In addition, the cover can be manually opened and closed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the conveyor device according to the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a first embodiment of a conveyor device according to the present invention, and FIG. 2 is an exploded perspective view showing a joint portion between a part of a guide rail linear portion and a curved portion. 2 shows a cross-sectional view of the guide rail by a vv cross-sectional view (a) of FIG. 2, a vi-vi cross-sectional view (b) of FIG. 2, and a vii-vii cross-sectional view (c) of FIG. 2, respectively. FIG. 4 is a front view of a specific example of the carrier, FIG. 5 is a sectional view taken along line XX of FIG. 4, FIG. 6 is a partially cutaway plan view of the carrier of FIG.
FIG. 8 shows a mode in which the carrier is guided by the guide rail, and FIG. 8 is a plan view showing a driving unit of the conveyor device shown in FIG.

A conveyor apparatus 1 according to a first embodiment of the present invention shown in these drawings has a guide rail 10 including a straight portion and a curved portion, and a plurality of connected and guided circulating guides. It comprises a carrier 20 and a driving device for driving the carrier 20 from outside.

The guide rail 10 is shown in FIGS.
As shown by (a), (b) and (c), protrusions 12 each having a trapezoidal cross section and a slightly rounded tip at both sides of the upper half portion in the longitudinal section and having an appropriate width are continuous in the longitudinal direction. Vertical projections 12a, 1
The portion having a shape in which the side surface adjacent to 2b is formed as the upright surfaces 13, 13 serves as the roller guide portion 11 of the carrier, and the lower half portion has a width smaller than the dimension between the roller guide portions 11, 11. They are formed to a required height, and are formed into an integral shape. A large number of stepped holes are provided as mounting holes 14 at required intervals on the central axis in the vertical direction,
A hollow wound rivet 15 is fitted and fixed in these mounting holes 14 as spacers, and the hollow wound rivets 15 are tightened at the time of bolt fastening by the reinforcement at the mounting hole 14 portion and the flange forming portion 15a caulked at the upper surface of the stepped portion. In this case, the spring washer is also used, so that reliable mounting can be performed.

One end 1 of the guide rail 10 is attached to both ends 16 and 16 'of the unit in the longitudinal direction.
6, an upper portion provided with the roller guide portion 11 is protruded in the axial direction of a required dimension, and a lower surface thereof is formed in a groove portion 16a having an appropriate width along a center line, and the other end portion 16 'is opposite to the roller guide portion. Only the lower part without 11 is protruded by an amount equal to the protruding length of the end part 16, and a convex part 16b conforming to the shape of the groove part 16a is formed on the upper surface thereof. A part 17 is formed.

Such a guide rail 10 can be connected so as to coincide with each other when the both end portions 16 and 16 'are sequentially overlapped. The joint portion 17 has the same structure as that of the linear guide rail 10 as well as the curved guide rail 10A to facilitate connection. The joint 17 is provided with connection bolt holes 17a penetrating up and down so as to correspond to each other. At the upper end 16, a stepped hole 17a 'is formed.
At the lower end 16 ', a nut 17b is buried at the lower end and a hexagon socket head cap screw 18 is screwed in from the upper side to fasten the connection. At the time of connection with the hexagon socket head bolt 18 at such a joint portion 17, a spacer 18a similar to the hollow wound rivet is inserted and fastened. The guide rail 10 (10A) having such a structure is formed of a synthetic resin having a high mechanical strength and a property that does not easily cause a thermal change. In addition, if necessary, steel (iron)
Alternatively, it can be made of metal such as aluminum.

The guide rail 10 constructed as described above
(10A) is a linear guide rail 10 and a curved guide rail 10A of a required length according to the installation conditions of the conveyor device 1.
Are connected by the joint 17 described above to form an endless continuous running path. At this time, each guide rail (straight line portion and curved portion) is attached to each mounting hole 14 with a hexagon socket head bolt 1.
9 and attached to a machine base (not shown) or the like.

As shown in FIGS. 4 to 6, the carrier 20 is provided with a lower plate 21 provided with a bogie type traveling mechanism 23 on a lower side, and is disposed above the lower plate 21 at a required interval. Top plate 22
And a roller 3 for applying an external running drive force
5 and the connecting rod 30.

The lower plate 21 is formed in a rectangular shape with required dimensions, and has two turning support shafts 25 supporting the bogie type traveling mechanism 23 at predetermined intervals on a longitudinal center line thereof, and a hexagon nut 25b at a vertical middle portion. And fastened. A bogie-type traveling mechanism 23 is rotatably mounted at the center of each of the lower portions of the turning support shafts 25, 25 via a bearing 25c.

The bogie type traveling mechanism 23 attached to the lower part of the lower plate 21 has a guide roller supporting member 24 having a width smaller than the width of the lower plate 21 mounted on the lower part of the turning support shaft 25 as described above. The center portion is rotatably supported, and a slide plate 28 having lubricity is interposed between the lower surface of the lower plate 21 and the upper surface of the guide roller support member 24, so that the load can be easily received. It can be turned. A pair of guide rollers 27, 27, which are paired with each other on the guide roller support member 24, are vertically installed at predetermined intervals in parallel with the turning support shaft 25 at equal intervals from the center of rotation to the left and right. It is rotatably provided by roller support shafts 26 and 26.

As shown in FIGS. 4 to 6, the guide roller 27 has a roller support shaft 26 whose base is screwed and fixed to a female screw member 26 'inserted and fixed to the guide roller support member 24. Each projection formed on the roller guides 11, 11 on both sides of the guide rail 10 is supported in a freely rotatable manner and has a chamfered peripheral edge of an opposing surface thereof. Upright surface 13, adjacent to the upper and lower inclined surfaces 12a, 12b of the portion 12,
13 is guided so that the chamfered portion and the peripheral surface are in contact with each other.

The turning support shaft 25 which supports the guide roller supporting member 24 so as to be able to swivel is provided with an upper portion (upper portion) 25a from a position fixed to the lower plate 21 with the hexagon nut 25b as described above. A connecting rod mounting portion for connecting the carrier 20 is provided. The base end of the connecting rod 30 is rotatably mounted via a joint ball 31 having a spherical surface. Is fitted in a hole 22a provided on the lower surface of the.

The upper surface of the lower plate 21 is provided with rollers 3 to which a driving force is applied to both sides at the center in the longitudinal direction.
5 and 35 are roller shafts 3 whose both ends are fixedly supported by the lower plate 21 and the top plate 22, respectively.
It is provided rotatably by 5a, 35a.

The top plate 22 may be of any shape depending on the conveyed material on the conveyor line used. In this embodiment, a circular plate is used, and is fixed to the lower plate 21 from above by a small screw 29a with a spacer 29 interposed at four places.

The connecting rod 30 for connecting the carrier 20 having such a configuration is made of a member having an appropriate thickness and a predetermined length, although its outer shape is not specified, and a rotating support shaft of the guide roller supporting member 24 at both ends. A rotatable bearing portion 32 is provided by attaching a join ball 31 to be fitted to the upper portion 25a, and the carrier 20 is connected via the bearing portion 32.

As shown in FIG. 7, the large number of carriers 20 constructed as described above are provided with two sets of guide rollers 27, 27 attached to respective guide roller support members 24, as shown in FIG. In the guide portions 11, the peripheral surfaces of the guide rollers 27, 27 of the respective sets are brought into contact with the upright surfaces 13, vertically with the projections 12, sandwiched therebetween, and the inclined peripheral portion is formed on the vertical inclined surface 12 a of the projection 12 ,
12b, and the guide rails 10 (10
A). Thus, the guide rail 1
A number of carriers 20 supported on 0 (10A) are connected in series by the connecting rod 30.

Also, the carrier 20 has a distance between the lower plate 21 and the top plate 22 of just 1/1 between the two pivoting support shafts 25,25.
Rollers 35 for receiving a driving force are rotatably attached to both side edges orthogonal to the traveling direction at a distance of 2 by a fixed roller shaft 35a.

As shown in FIGS. 8 and 9, a driving device 40 for connecting a number of the carriers 20 to travel on the guide rail 10 (10A) includes a sprocket 41 driven by a reduction motor 47 and supporting means for the sprocket 41. 45.

The sprocket 41 is provided with a plurality of recesses 41a (eight locations in this specific example) on its outer periphery for receiving the rollers 35 attached to the carrier 20 at a predetermined circular pitch. A hole 42 is formed in the center, and the periphery of the circular hole 42 is formed in a guide portion 43 having a triangular edge.
The gear 44 (internal teeth) is a concentric circle slightly larger in inner diameter than 3, and is integrally attached by a large number of fasteners. The pitch at which the carrier 20 engages with the rollers 35 is set to correspond to the circular pitch formed by the rollers 35 inside the curve of each carrier 20 connected at the engagement position with the sprocket 41. ing.

Like the guide roller 27 of the carrier 20, the supporting means 45 for supporting the sprocket 41 thus formed is mounted on three upright supporting shafts 46a which are arranged equally on a machine base (not shown) or the like. A pair of supported guide rollers 46 are abutted against a guide portion 43 provided on the inner peripheral edge of the circular hole 42 of the sprocket 41 so as to be supported horizontally.

The reduction motor 47 is attached to a machine base or the like inside the circular hole 42 of the sprocket 41, and a pinion 48 attached to an output shaft thereof is engaged with the internal teeth of the gear 44 so that the sprocket 41 is rotated. It is designed to be driven to rotate.

In the conveyor device constructed as described above, the pair of guide rollers 27 of each bogie-type traveling mechanism 23 having a plurality of carriers 20 at the lower part thereof is connected to the roller guide portion 11 of the guide rail 10 (10A) as described above. For example, as shown in FIG. 1, the guide rails 10 (10A) are connected endlessly so as to run freely on a guide rail 10 (10A), and are connected and arranged by a connecting rod 30.

Then, the guide rail 1 constituting the traveling path
0 (10A) connects the linear guide rails 10 as described above sequentially in the joint section 17 in the straight section, and connects the curved guide rail 10A having a preset curvature in the curved portion in the same manner as the straight section. It is connected at the portion 17 to form an endless ring. In the traveling path shown in FIG. 1, there are eight curved portions, of which six curved guide rails 10A that curve inward are used, and two remaining curved guide rails 10A that are curved outward are used. . In addition,
The curved guide rail 10A used at the installation location of the driving device 40 has a pitch circle where the roller 35 receiving the driving force of the carrier 20 traveling thereover connects the engaging recess 41a of the sprocket 41 as described above. The curvature is matched.

Further, in this manner, the guide rails 10,
At the time of connecting the carrier 20 traveling on 10A, the connection is made free (movable connecting portion) at least at one of the connecting portions formed by all the connecting rods 30. Or you may make it connect by interposing a spring as said floating connection part. The connected carrier 20 is used by attaching an attachment having a required shape on the top plate 22 according to the purpose of transport. Alternatively, a required attachment can be attached instead of the top plate 22. In this case, it may be mounted on the lower plate 21 with four mounting bolts 29a (small screws).

The carriers 20 connected in this manner are
When the sprocket 41 is rotated by the driving of the driving device 40, a driving force is applied to the roller 35 of the carrier 20 which meshes with (engages) the engagement recess 41a of the sprocket 41, and the connected carriers 20 are sequentially guided. It runs on rails 10 and 10A. At this time, since each carrier 20 has a bogie type running mechanism, the front and rear running mechanisms are parallel to each other along the roller guide section 11 of the guide rail 10 in the linear portion of the guide rail 10 (10A).
The two guide rollers 27, 27 are guided so that they can run smoothly. In the curved section, the curved guide rail 1
When the left and right guide roller pairs 27, 27 guided by the roller guides 11 on both sides of 0A are on the outside, the roller rolls fast, and on the inside, the roller rolls slowly. The roller support member 24 is rotated with the rotation support shaft 25 as a reference, and can travel without difficulty.

In the driving device 40, the sprocket 4
The gear 4 is rotatably supported by a guide roller 46 at a guide portion 43 at an inner peripheral edge of a circular hole 42 at the center thereof.
By driving the pinion 48 meshing with the internal teeth of No. 4 at a required speed by the reduction motor 47, the connected carrier 20 is driven and driven at a predetermined speed.

The carrier 20 that is driven and travels in this way is
In the part connected as described above, the connection by the connecting rod 30 is free (provided with a floating connection part) or is connected by a spring, so that the traveling from the straight part to the curved part is shifted. Since the sprocket 41 of the driving device 40 and the roller 35 attached to each carrier 20 mesh with each other, the connection pitch of the carrier 20 at the meshing position is a polygonal line connecting the connection center as compared with the straight running portion. There is a slight difference in the radius of gyration on the center line, and this phenomenon causes an error in the connection part, and if the connection is endless, the connection length will change. By providing a portion (the connecting floating portion / spring connecting portion), the length is automatically adjusted at that portion. In addition, even if there is a dimensional difference in the connection length dimension of the carriers 20 to be connected to each other and a cumulative error occurs due to the dimensional difference, the carrier 20 is also automatically adjusted. As a result, the direction change at the meshing portion with the sprocket 41 can be performed at all without difficulty and the vehicle can run smoothly.

Further, as described above, the connected carriers 20 can travel smoothly along the guide rails 10 (10A) by the bogie-type traveling mechanism 23 attached to the lower plate 21. It can be run without any noise, and can be circulated quietly and without vibration.

Next, an example of the conveyor device of the second embodiment is shown in FIGS. Although the conveyor apparatus 1A of the second embodiment shown in these figures has an inward rotating direction, its structure is basically the same as that of the conveyor apparatus 1 of the first embodiment. Therefore, the same parts as those in the above embodiment are denoted by the same reference numerals, and the detailed description is omitted.

In the conveyor device 1A of the second embodiment,
The guide rail 10 (10A) is the same as that of the above-described embodiment, and two curved arc-shaped guide rails 10A, 10A are arranged, and one end is formed as a spring connection 49 to form an endless shape. The sprocket of the driving device is arranged inside one of the curved guide rails 10A, and drives the carrier 20A connected endlessly. The structure of the carrier 20A is partially different from that of the above embodiment.

The carrier 20A is shown in FIGS.
The lower plate 21A and the top plate 22A are both rectangular, and a pair of upper and lower guides that contact the roller guide 11 inside the curved guide rail 10A is provided below the lower plate 21A. The roller pair 27, 27 is provided at a fixed position by a roller support shaft 26a which is vertically mounted at four positions on the left and right sides so that the pitch in the traveling direction is slightly narrower than that on the opposite side (guide roller pair located on the outside). Have been. These roller support shafts 26a are formed with counterbore holes 2 formed by dug the screw shafts 26a 'at the upper end into the upper surface of the lower plate 21A.
At 1a, it is fastened and fixed by a nut 26b. In addition, regarding the arrangement of the guide roller support shaft 26a,
The guide rails 10 are provided at intervals such that they can be guided and moved without any adjustment between the straight portion and the curved portion.

The lower plate 21A and the top plate 22A are spaced from each other by a spacer 29 so as to be kept at a required distance.
A roller 35 receiving driving force is rotatably provided by a shaft 35a at a central portion of a side portion which is inside on the curved portion at the time of running in a space formed between the two portions. ing. A shaft pin 36 for mounting a connecting rod is provided at the center on a line connecting the shaft cores of the left and right guide roller support shafts 26a to fit both ends into holes 21c, 22c provided in the lower plate 21A and the top plate 22A, respectively. Installed.

The carrier 20A constructed as described above has a connecting rod 30A of a predetermined length in which a joint ball 31 is provided inside the connecting rod mounting shaft pin 36, and a bearing portion 32 thereof. It is fitted and connected, and is driven by a driving device 40 as shown in FIG. 10 to be used as a conveyor.

In this conveyor apparatus 1A, an object to be conveyed is placed directly on the top plate 22A of the carrier 20A, or an attachment is attached, and the conveyer apparatus 1A is used for conveyance. The carrier 20A thus configured has a guide roller 27 provided at a fixed position. However, as described above, the carrier is supported by a guide roller 27 so that it can run freely in a straight portion or a curved portion (inward only). Since the shaft 26a is arranged, as shown in FIG. 14, the roller guides 11, 1 on both sides of the guide rail 10 are provided.
The guide rollers 27 on the left and right are brought into contact with each other so as to be guided.

In the conveyor apparatus 1 or 1A of the first or second embodiment, the carrier 2
0 (20A) on the top plate 22 (22A) upper surface,
For example, if a cover 37 as shown in FIG. 15 is attached, a conveyed object (for example, food) in a place where dust and dust are disliked can be covered with the cover 37 and conveyed in a sanitary manner.

In the case of the carrier with the cover 37 formed as described above, depending on the application, the cover 37 is opened at a necessary portion so that a conveyed object can be taken out from the carrier. It is preferable to provide a hinge 37a (corresponding to the pivot portion of the present invention), and to form a holding portion 37b for opening the cover 37 on the side opposite to the hinge 37a. In order to open and close the cover 37 automatically, a gripping portion or a member similar thereto is provided as an opening / closing operation portion of the cover 37, though not shown.
When approaching a required station provided along the conveyor line, it is convenient to lift the opening / closing section of the cover 37 with a guide bar and open the cover 37. In addition, by selectively operating such a guide bar for opening and closing the cover for each station,
It is also possible that the cover 37 can be opened and closed only at necessary places.

If the opening and closing means of the cover 37 is provided alongside a conveyor line, the conveyor device can be used, for example, in a facility for selling food while carrying the food on a conveyor, so that smooth and quiet running can be achieved. It can be a sanitary facility that can perform.

In the conveyor device of this embodiment, the guide rails for guiding the traveling of the carrier are shown in FIG.
The present invention can be applied to a guide rail having a sectional shape as shown in FIGS. That is, FIG. 16 shows that the shape of the roller guides 11c on both sides of the guide rail 10C is formed only with a triangular edge portion. In this case, two upper and lower guides similar to the above embodiment are used. Roller 2
7 and 27, a guide surface is formed only by the upper and lower inclined surfaces 11c 'and 11c' of the roller guide portion 11c during running.

Further, in the guide rail 10D having the cross-sectional shape shown in FIG.
7d, the roller guide portion 1 of the guide rail 10D.
Since 1d has a square cross section, a grooved roller is used. Further, in the one shown in FIG. 18, the guide rail 10E is formed by bending the metal plate inwardly on both sides in the width direction as shown in the figure, and the bent portions on both sides are formed into a rounded V-shape. These V-shaped cross sections correspond to the roller guide grooves 11.
e, the carrier-side guide roller 27e may have a running peripheral surface having a shape corresponding to the roller guide groove 11e. If a guide rail having such a shape is used, it is possible to run the vehicle with the height lowered.

The guide rails 10C and 10 as described above
In D and 10E, these guide rails 10C,
The guide rollers 27c, 27d, and 27e on the carrier side are guided in contact with the roller guide portions in 10D and 10E in a combination that does not separate in the vertical direction. You can run.

The roller 35 to which the driving force is applied in this embodiment corresponds to the power transmission member of the present invention.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment of a conveyor device according to the present invention.

FIG. 2 is an exploded perspective view showing a joint portion between a part of a guide rail straight portion and a curved portion.

FIG. 3 is a cross-sectional view of the guide rail taken along the line vv in FIG. 2;
This is shown by a sectional view (a), a vi-vi sectional view (b) of FIG. 2, and a vii-vii sectional view (c) of FIG. 2, respectively.

FIG. 4 is a front view of the carrier according to the first embodiment.

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a partially cutaway plan view of the carrier of FIG. 4;

FIG. 7 is a diagram illustrating a mode in which a carrier is guided by a guide rail.

FIG. 8 is a plan view showing a driving unit of the conveyor device shown in FIG.

FIG. 9 is a side view taken along the line YY of FIG. 8;

FIG. 10 is a second view of the conveyor device according to the present invention.
It is a top view of an example.

FIG. 11 is a front view of the carrier according to the second embodiment.

FIG. 12 is a partially cutaway plan view of the carrier shown in FIG. 11;

FIG. 13 is a sectional view taken along the line ZZ of FIG. 12;

FIG. 14 is a diagram illustrating a mode in which a carrier is guided by a guide rail.

FIG. 15 is a diagram showing an example of a carrier having a cover attached to an upper portion thereof.

FIG. 16 is a diagram showing another example of a guide rail and a guide roller guided by the guide rail.

FIG. 17 is a diagram showing another example of a guide rail and a guide roller guided by the guide rail.

FIG. 18 is a diagram illustrating another example of a guide rail and a guide roller guided by the guide rail.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor apparatus 10 Linear guide rail 10A Curved guide rail 11, 11c, 11d, 11e Roller guide part 14 Mounting hole 16, 16 'End of guide rail 16a Groove at guide rail end 16b Convex part at guide rail end 17 Guide rail joint portion 20, 20A Carrier 21, 21A Lower plate 22, 22A Top plate 23 Bogie type traveling mechanism 24 Guide roller support member 25 Revolving support shaft 26 Roller support shaft 27, 27d, 27e Guide roller 30 Link rod 31 Join ball 32 Bearing part 35 Roller to which driving force is applied 37 Carrier cover 37a Hinge 37b Holding part 40 Drive unit 41 Sprocket 41a Sprocket recess 45 Sprocket support means 46 Guide roller 47 Reduction motor

Claims (6)

[Claims] An endless guide rail having arcuate curved portions in at least two places, and a plurality of carriers connected by a connecting rod so as to be guided by the guide rail and circulated and run, And a driving means for driving a carrier to be connected thereto, wherein the carrier includes a plurality of guide rollers guided along the guide portion at the curved portion of the guide rail, and is connected endlessly. A conveyor device, wherein a connecting floating portion is formed in at least one of the connecting portions of the connecting rod. 2. The carrier according to claim 1, wherein the lower plate supports a plurality of sets of guide rollers guided by guide rails;
It has a base plate disposed at an appropriate interval on its upper part, between the lower plate and the base plate,
The pivot of the connecting rod is provided at two places so that the center is located on a line connecting the axes of the guide rollers located on both sides on the center axis in the traveling direction of the carrier. Item 2. The conveyor device according to item 1. 3. The power transmission member of the carrier is provided at an intermediate position between pivot portions of a connecting rod provided between a base plate and a lower plate, and at a position deviated from a longitudinal center line thereof. 3. The conveyor device according to 1 or 2. 4. The conveyor device according to claim 3, wherein the power transmission member is a roller to which a driving force is applied by a driving unit. 5. The conveyor device according to claim 1, wherein the driving means is a sprocket that meshes with a roller of a power transmission member attached to the carrier. 6. A cover is provided on the upper side of the base plate of the carrier, the base being supported by a pivot portion provided on one side thereof and capable of opening upward. The cover is provided along a traveling path at a required position. The conveyor device according to claim 1, wherein the cover is opened or closed by means.