JPH08179U - Floor chain conveyor - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a chain conveyor for floors that does not cause the transferred objects to shift at curved points. [Structure] A carrier roller 8 and a small-diameter traveling roller 9 are integrally supported on a top receiving portion 2 of one link plate 1 of a chain main body 7 having side rollers 5, and a horizontal receiving portion 4 of another link plate 3 is integrally supported. A chain 13 provided with guide rollers 11 is formed, and a pair of endless chain guide rail frames 14 for laying two chains 13 in parallel are provided.
The side roller 5 and the guide roller 11 are set so as to face the inside of the frame, and a double speed convex rail 16 is provided at the upper edge of the outer curved portion of the curved portion 14A of the chain guide rail frame body 14. Since the moved traveling roller 9 is made to roll, the conveyed object reaching the curved portion from the straight conveying path causes the traveling roller 9 to contact the double-speed convex rail 16 and roll the integrated carrier roller 8 at a high speed. As a whole, it can be transferred without delay.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention also relates to a floor chain conveyor that constitutes an endless flat conveyance path.

[0002]

[Prior art]

 Generally, the structure of the conveyor path of a chain conveyor with a top roller (carrier roller) is such that a sprocket arranged at the front and rear ends is hooked with an endless chain and a straight conveyor path having a carrier section and a return section is adopted. Only. That is, the conventional chain conveyor has only a straight conveying path and cannot use a curved portion. At the curved portion, a dedicated conveying means such as a curved chain or a curved roller conveyor must be additionally provided, and one circulation can be performed. Could not get the floor transport path.

[0003]

[Problems to be solved by the device]

 However, in recent years, there has been a demand for a floor conveyor mode that uses a series of chain conveyors that can easily control the transfer speed and the like in the transfer path in automation factories. In this case, in particular, in a chain conveyor that copes with the load of a conveyed object (conveying pallet), at least two chain conveyors (a plurality of rows) must be installed in parallel at a predetermined interval. However, the problem with the chain conveyor system that uses two threads in this floor mode is that when the plane parallel chain conveyor reaches the curve part (meandering part), the outer chain conveyor and the inner chain conveyor are Since the radius of curvature is different from that of, the transfer pallet is delayed between the left and right (inside and outside) positions of the transfer pallet placed on the chain conveyor traveling at the same speed, and the placement posture of the transfer pallet is disturbed on the other side. Occurs.

In view of the above-mentioned situation, the present invention solves the above problems by making a double speed reinforcement by a traveling roller having a small diameter and a top roller (carrier roller) when reaching a curved portion of the chain conveyor. The purpose is to provide a chain conveyor for automobiles.

[0005]

[Means for Solving the Problems]

 According to the present invention, a carrier roller and a traveling roller having a diameter smaller than that of the carrier roller are installed side by side on a top receiving portion projecting in the center of one of the link plates constituting the chain main body having side rollers, The guide roller is pivotally supported on the overhang receiving part that projects laterally in the center of the link plate to form a single chain. Two chains of these chains are used as endless flat conveying paths The side roller and the guide roller, and the double-speed convex rail provided on the upper edge of the chain guide rail frame at the outer position at least at the curved portion in this parallel plane transport path. The traveling rollers of the top receiving portion are brought into contact with each other so that the conveyed object on the carrier roller is partially fed at a high speed.

[0006]

[Action]

 As described above, the chain is laid so that the chain guide rail frame that forms a pair of flat conveying paths exposes the side-by-side carrier rollers and running rollers, and the side rollers and guide rollers are housed inside the frame. In addition, the running rollers of the outer chain are made to contact the double-speed convex rail part that is provided at the upper edge of the outer chain guide rail frame in the curved part of the chain guide rail frame, so that the linear transport path When it reaches the curved portion from the curved roller, the small-diameter traveling roller integrated with the carrier roller comes into contact with the double-speed convex rail of the rail frame body of the outer curved portion where the radius of curvature is large, and the rolling roller rotates. For large diameter carrier rollers, the peripheral speed is substantially higher. For this reason, the transfer palette of the work set placed on the carrier roller is partially (outside the curved portion) fast-fed, and the entire transfer pallet is transferred in parallel without changing the transfer position.

[0007]

【Example】

 The present invention will be described below with reference to the drawings of the embodiments.

Reference numeral 1 is an inner link plate in which a top receiving portion 2 is provided upright in the center, and 3 is an outer link plate in which a U-shaped overhang receiving portion 4 is horizontally provided in the central side portion of the outer link plate. 3 and inner plate ends of the inner link plate 1 are alternately piled up, and side rollers 5 are arranged at the overlapped portions and pins 6 are inserted to form a chain body 7 as a known chain connection. A large-diameter carrier roller 8 and a small-diameter traveling roller 9 are provided on the upper part of the top receiving part 2 which can be raised as a set of side-by-side bearings with a conveying pin 10, and a guide is provided in the gap of the U-shaped protruding receiving part 4. The roller 11 is fitted and pivotally supported by the guide pin 12 to form the floor chain 13 as a whole. Two U-shaped frame type chain guide rail frames 14 which are endlessly laid in a plane position and which are two floor chains 13 serve as a plane transfer path, and a top support is received in an opening 15 at the center of the upper surface of the guide rail frame bodies 14. The side roller 5 and the guide roller 11 are accommodated in the frame by guiding the portion 2, and the carrier roller 8 and the traveling roller 9 are set to be exposed upward. In addition, in the parallel chain guide rail frame body 14, at the curved portion 14A serving as the meandering conveyance path, there are two upper edge portions 14a on both sides of the curved portion 14A 'of the outer guide rail frame body 14 where the radius of curvature of the curve is large. The double-speed convex rail 16 is attached with a fixed length (from the start portion to the end portion on the outside R of the corner), and the whole structure constitutes the chain conveyor 17 for the floor. In this case, the double-speed convex rail 16 has a thickness such that it reaches the traveling roller 9 having a small diameter, and the traveling roller 9 is in contact rolling. Further, the side roller 5 facing the inside of the chain guide rail frame body 14 comes in contact with the lower surface 14b in the frame, and the guide roller 11 comes in contact with the side wall 14c.

To explain this action, first, in the floor chain conveyor 17 of the endless structure which is arranged in a plane with respect to the floor F as a whole (see FIG. 4), the chain 13 of a pair (two articles) is projected. A carrier pallet 18 on which a carrier object is placed is placed on a plurality of carrier rollers 8 (at least four in the front, rear, left and right), and the carrier pallets 18 are appropriately transferred.

Here, since the transport pallet 18 to be moved moves uniformly left and right in the straight portion 14B in which the two chains 13 (inner and outer chains) rotate at the same speed, It does not cause the position of the set posture to shift for the conveyed object (not shown) to be set.

Next, when the transport pallet 18 reaches the curved portion 14A, the parallel chains 13 and 13 have different curvature radii R and R ', so that the curved portion having a small radius half radius R is used. There is a delay in the transfer amount of the chain in the curved portion 14A 'having a larger radius of curvature R'in comparison with 14A. As a means for correcting this transfer delay, a double speed convex rail 16 is located at the upper edge 14a of the curved portion 14A ', and a traveling roller 9 having a small diameter integrated with the carrier roller 8 is brought into rolling contact, so that the traveling roller 9 receives it. With respect to the rotation, the carrier roller 8 having a large diameter has a large peripheral speed and is rotated at a substantially high speed, so that the carrier pallet 18 placed on the carrier roller 8 is fed at a slightly high speed. That is, the curve portion 14A 'in the outer position, which is a delay in the curve portion 14A, is slightly fast-forwarded by a kind of double-speed chain mechanism, so that the transport pallet 18 as a whole does not cause a transfer delay and passes through the curve portion. Even if it moves in a parallel posture.

Of course, the diameter of the traveling roller 9 having this small diameter is set in consideration of the radius of curvature of the inner and outer curves, the chain speed, and the like.

[0013]

[Effect of device]

 As described above, the floor chain conveyor of the present invention has a small-diameter traveling roller integrated with the carrier roller of the outer chain that receives the object to be conveyed in the inner and outer chains of the two chains. Since it rolls on the convex rail, it is possible to move partially at the curve to speed up. That is, even if the chain speed is constant, the conveyed object is conveyed starting from the center of the curve R, and even if the conveyed object moves to the linear conveyance, the conveyed object is restored to the initial position, and the curve is Objects can be transported under a certain transport condition or a series of chains. In addition, since the side rollers and the guide rollers roll inside the rail frame, passing through curved positions and the like becomes smooth. Moreover, since the present invention has a simple structure, it is easy to manufacture and has practical effects such as preventing malfunction.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a chain body showing an embodiment of the present invention.

FIG. 2 is a cutaway plan view of the same portion.

FIG. 3 is a vertical sectional front view of the same.

FIG. 4 is a plan view of a floor mode of the floor chain conveyor.

FIG. 5 is an explanatory diagram in which a conveyed object is placed on a two-strand chain conveyor.

[Explanation of symbols]

 1 Inner link plate 2 Top receiving part 3 Outer link plate 4 Overhang receiving part 5 Side roller 7 Chain body 8 Carrier roller 9 Traveling roller 11 Guide roller 14 Chain guide rail frame 14 'Curved part 16 Double speed convex rail

Claims (1)

[Scope of utility model registration request] 1. A carrier roller and a traveling roller having a diameter smaller than that of the carrier roller are installed side by side on a top receiving portion projecting from the center of one of the link plates constituting a chain body having side rollers. The guide plate is axially supported by the overhanging receiving portion that projects laterally in the center of the link plate to form a single chain. Two chains are formed on each of the pair of chain guide rail frame bodies that are endless flat conveying paths. The side roller and the guide roller portion are made to face each other, and the top receiving portion is attached to the double-speed convex rail provided on the upper edge portion of the chain guide rail frame body at the outer position at least at the curved portion in the parallel plane conveying path. A chain conveyor for floors in which the traveling rollers of are brought into contact with each other so that the objects on the carrier rollers are fed at a partial speed.