JPH05338756A - Top plate for conveying chain - Google Patents

Abstract

PURPOSE:To attain a smooth chain conveyor operation at the time of load accumulation by making the space between the adjoining plates to overlap each other at the front end and the back end sides. CONSTITUTION:Each of the top plates of an elastic resin or a rubber material formed into one is mounted on a conveying chain 20 by engaging it on the conveying chain 20 in a bouncing manner by means of pushing leg portions 12 of the top plate 10 in between a pair of rollers 23, 23 adjoining each other. Now when articles being conveyed are stopped without stopping the conveying chain 20, the top plates 10, 10 successively pass under the bottom surfaces of the conveying articles brought to a standstill. at this time, a condition is attainable to have the successive protrusion 11f proceed under the bottom surface of the conveying articles while the preceding protrusion 11b has not yet completely come under the conveying articles because the protrusions 11b of the rear end sides and the protrusions 11f in the front sides of the adjoining top plates 10, 10 are overlapping each other. Thus almost a continuous conveying surface can be formed and accumulation can be smoothed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention constitutes a conveying surface of a chain conveyor by installing the roller chains side by side in a row, or a driving surface for frictionally driving a conveyor roller in the roller conveyor. To a top plate for a carrying chain.

[0002]

2. Description of the Related Art A roller chain for a chain conveyor or a roller chain for driving a roller conveyor (hereinafter referred to as a "conveyance chain") forms a conveying surface for loading conveyed objects or frictionally drives a conveyor roller. An attachment called a top plate is attached to form the driving surface of the.

The conventional top plate is a mere rectangular plate-like member, and is usually attached to the attachment tongue formed on the outer link plate of the carrier chain via bolts or rivets. The total length of the top plate corresponds to about 2 pitches of the transport chain, and therefore the top plates on the transport chain are arranged in a row with a very small gap therebetween, and the top plate is continuously transported along the transport chain. Surfaces, drive surfaces can be formed.

[0004]

According to the prior art, since the mutual gap of the top plates is orthogonal to the traveling direction of the transport chain and is formed linearly,
In the middle of the adjacent top plates, the conveying surface and the driving surface are discontinuous, so that the so-called accumulating operation cannot be smoothly performed in the chain conveyor, and the rotation of the conveyor rollers is uneven in the roller conveyor. The problem of becoming unavoidable was unavoidable. That is,
The accumulation operation forcibly stops the conveyed items on the conveyance surface and causes only the conveyance chain to travel. , While the running resistance of the transport chain increases suddenly, and the conveyed items vibrate,
This is because it is impossible to continuously drive the conveyor rollers in the roller conveyor.

Further, the transport chain requires a special chain having a mounting tongue piece, and there is a problem in that attachment and detachment of the top plate is extremely complicated.

Therefore, an object of the present invention is to form a projecting portion at one end of a plate portion, and to form a notch portion at the other end, which fits the projecting portion, and elastically engage with a transport chain. Providing a top plate for a transport chain that makes the transport surface of the chain conveyor and the drive surface of the roller conveyor substantially continuous by providing the legs that can be easily attached to and detached from the standard chain. To do.

[0007]

The structure of the present invention for achieving the above object comprises a plate portion and a leg portion formed on the lower surface of the plate portion and elastically engaged with the transport chain. The gist of the plate portion is that the plate portion is integrally formed with one end in the traveling direction of the transport chain and the notch portion is formed at the other end in conformity with the protrusion.

The leg portion can be formed so as to be press-fitted between the adjacent rollers of the transport chain at the central portion of the lower surface of the plate portion.

Further, the leg portions may be formed at both end portions of the plate portion so as to be engageable with the shaft ends of the adjacent connecting pins of the transport chain.

[0010]

According to the structure of the present invention, since the legs can be elastically engaged with the carrier chain, the whole can be easily attached to and detached from the ready-made chain. A protrusion is formed at one end of each attached top plate, and a notch is formed at the other end to match the protrusion of the next-ordered top plate. It is possible to form a continuous transport surface and drive surface.

The leg portions that can be press-fitted between the adjacent rollers are constrained by the rollers on both sides to position the plate portion at a predetermined position.

Further, the leg portions engageable with the shaft ends of the adjacent connecting pins can pinch the connecting pins from both sides and position the plate portion via the shaft ends of the connecting pins.

[0013]

Embodiments Embodiments will be described below with reference to the drawings.

The top plate 10 for the transport chain is
It is composed of a plate portion 11 and a leg portion 12 formed on the lower surface of the plate portion 11 (FIGS. 1 and 2).

The transport chain 20 is a general roller chain in which a large number of inner link plates 21, 21 ... And outer link plates 22, 22 ... are alternately connected via connecting pins 24, 24. Is. In addition,
Bushings 21 a are attached to the inner link plate 21 corresponding to the respective connecting pins 24.

The plate portion 11 is formed in a parallelogram shape, and has an inner link plate 21 of the carrier chain 20,
21. The total width of the space between 21 ... and the pitch P of the transport chain 20.
It has a total length of 3 times as much as 1. That is, the plate portion 1
At both ends of 1, the acute-angled protrusions 11f and 11f are formed, respectively.
b, notches 11c, 11c are formed, and notches 1
1c and 11c are adapted to the protrusions 11f and 11b on the opposite side.

The leg portion 12 is formed at the center of the lower surface of the plate portion 11. The leg portion 12 is formed orthogonally to the plate portion 11 over the entire width of the plate portion 11.
The front and rear surfaces of the leg portion 12 are finished in a concave arc surface having a curvature substantially equal to the radius of the roller 23, and are thinnest at a position depending on the radius of the roller 23 from the lower surface of the plate portion 11. The leg portion 12 has a pair of adjacent rollers 23, 2 at the thinnest portion.
While having a thickness equal to the interval t2 of the outer peripheral portion of 3,
The tip part is separated by expanding. The thickness t1 of each tip after separation is t1 = t2 / 2 with respect to the distance t2 between the rollers 23, 23.

The plate portion 11 and the leg portion 12 are integrally molded from an elastic resin material or rubber material, and the base portion of the leg portion 12 has a hole 13 having an inverted triangular cross section in the width direction. Penetrates.

The top plate 10 as described above is arranged in a column in a row on the outer circumference side of the transport chain 20 when the transport chain 20 is circularly driven, so that a substantially continuous transport surface and drive surface are provided. Can be formed.

Each top plate 10 can be elastically engaged with and attached to the transport chain 20 by being pushed between a pair of adjacent rollers 23 of the leg portion 12 (see FIG. 2 ( B)). That is, leg 1
The tip of 2 is put between the rollers 23, 23, and the plate 1
When pressure is applied from the surface of No. 1, the front end portion of the leg portion 12 which has been spread back and forth is elastically deformed so as to be gradually closed by being guided by the rollers 23 and 23, and finally, the rollers 23 and 23.
You can pass between. The tip portion that has passed between the rollers 23, 23 opens and spreads along the outer circumference of the rollers 23, 23, and is sandwiched and locked by the rollers 23, 23.

At this time, the front and rear surfaces of the leg portion 12 and the front and rear rollers 23, 23 come into close contact with each other, and the plate portion 11 is inserted between the inner link plates 21, 21, ... Can be positioned. Furthermore, the protrusions 11 before and after the plate portion 11
f and 11b are rollers 23,
The horizontal posture of the plate portion 11 is determined by being placed on the plate 23. The plurality of top plates 10, 10 ... Which are sequentially attached in this manner can be continuous by complementing the notch 11c of the adjacent plate 11 with the protrusion 11f of the other plate 11. it can. However, it is assumed that the top plates 10, 10 ... Are attached to the transport chain 20 at every two pitches thereof, and at this time, the adjacent plate portions 11, 11 are continuous with a minimum required clearance t4. (Figs. 1 and 3).

The carrying chain 20 and the top plates 10, 10 ... Can carry the object M directly on the carrying surface composed of a set of plate portions 11, 11 ... (FIG. 3).

Therefore, when the article M is forcibly stopped without stopping the conveyor chain 20 traveling in the direction of arrow K in FIG. 3, the top plates 10, 10, ...
It passes under the bottom surface of the stopped conveyed article M one after another. At this time, since the protrusions 11b on the rear end side and the protrusions 11f on the front end side of the adjacent top plates 10 and 10 overlap each other, the protrusion 11b of the preceding order completely enters under the conveyed article M. It is possible to realize a state in which the projecting portion 11f of the next order enters below the bottom surface of the conveyed article M in a state where it is not cut. Therefore, each plate portion 11 has a gap t
Regardless of the presence of 4, it is possible to form a substantially continuous conveyance surface, and it is possible to realize a smooth accumulation operation.

Incidentally, this means that the plate portions 11 and 11 are
This is exactly the same when ... Is brought into contact with the conveyor roller of the roller conveyor and is used as the driving surface of the conveyor roller.

The carrier chain 20 is assumed to be driven by a sprocket having teeth at every other pitch corresponding to the pitch in which the legs 12 are not inserted.

[0026]

Other Embodiments The plate portion 11 can be extended in the width direction of the transport chain 20 (FIG. 4). Plate part 1
1 is extended beyond the positions of the outer link plates 22 and 22 by increasing the height of the leg portion 12, so that it is possible to form a transport surface and a drive surface having a larger area.

The plate portion 11 includes the top plate 10,
When 10 ... Are arranged in a column, adjacent plate portions 1
Unless an excessive gap t4 is generated between 1 and 11,
The protrusion 11f at one end and the protrusion 11b at the other end may have any shape that overlaps with each other (FIG. 5).

For example, a protrusion 11f having a rounded tip is provided at the center in the width direction at one end, and the protrusion 11 at the other end is provided.
Corresponding notch 11c can be provided in the middle of b and 11b ((A) of the same figure). Further, the corresponding notch 11c can be provided by forming the protrusion 11f which is offset to one side at one end and the protrusion 11b which is offset in the opposite direction at the other end (see FIG. )). Furthermore, the protrusion 1 having a sharp tip at the center of one end
1f, and projecting portions 11b, 1b formed on both sides of the other end
Corresponding notches 11c may be provided between the 1b (FIG. 7C), and the protrusions 11f and 11f at one end, the protrusions 11b and 11b at the other end, and the corresponding notches 11c and 1c.
A plurality of 1c's may be provided (FIG. 8 (D)).

The top plate 10 is a carrier chain 20.
A pair of legs 1 engageable with the shaft ends of the adjacent connecting pins 24, 24 from the outside of the outer link plates 22, 22 of the
It can be attached via 2, 12 (Fig. 6, Fig. 7).

The leg portions 12, 12 are formed on the lower surface of the plate portion 11 at both end portions of the plate portion 11, and each leg portion 12 has a pair of hooking holes corresponding to the connecting pins 24, 24. 12h and 12h are provided, and the inner surface of the lower end is
A slope portion 12c is provided corresponding to each hook hole 12h (FIG. 7). The top plate 10 positions the inclined surface portions 12c, 12c of the leg portions 12 so as to correspond to the shaft ends of the connecting pins 24, 24, and when pressed from above, the inclined surface portions 12c, 12c cause the leg portions 12, 12 to move. It can be easily attached to the transport chain 20 by opening to the outside and closing the legs 12 and 12 when the hooking holes 12h and 12h and the connecting pins 24 and 24 coincide with each other.

Since the pair of legs 12 and 12 are mounted so as to straddle the carrier chain 20, the carrier chain 20 can be driven using a normal sprocket, and the legs 12 and 12 are exposed to the outside. It is even easier to remove. The pair of legs 12 and 12 are
The outer link plates 22 and 22 can be strongly sandwiched by forming the tip portions so that the distance therebetween is slightly narrowed. In addition, each locking hole 12h has a connecting pin 24
It may be a concave portion formed on the inner surface side of the leg portion 12 corresponding to the shaft end of the.

In the above description, since it is only the leg portions 12 that need elasticity, the top plate 10 uses a general metal material or the like for the plate portion 11, and only the leg portions 12 are elastic. Materials may also be used.

[0033]

As described above, according to the present invention, the plate portion is provided with the projecting portion at one end thereof, and the other end thereof is provided with the notch portion adapted to the projecting portion, thereby adjoining plate portions. Since the front end side and the rear end side are overlapped between the parts, it is possible to form a substantially continuous transport surface and drive surface, and therefore, including the accumulating operation in the chain conveyor, In addition to achieving extremely smooth operation as a whole,
Since the legs engage elastically with the transport chain,
It has an excellent effect that it can be easily attached and detached even with respect to a ready-made standard transport chain.

[Brief description of drawings]

FIG. 1 is an explanatory perspective view showing a mounted state.

FIG. 2 is an explanatory plan view, an explanatory side view, and a rear view showing the overall configuration.

[Fig. 3] Operation explanatory diagram

FIG. 4 is a cross-sectional view taken along the line X-X of FIG. 1 showing another embodiment.

FIG. 5 is an explanatory plan view showing another embodiment.

FIG. 6 is a view corresponding to FIG. 1 showing another embodiment.

FIG. 7 is a cross-sectional view taken along line YY of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Top plate 11 ... Plate part 11f, 11b ... Projection part 11c ... Notch part 12 ... Leg part 20 ... Conveyance chain 23 ... Roller 24 ... Connecting pin

Claims (3)

[Claims] 1. A plate portion and a leg portion which is formed on a lower surface of the plate portion and elastically engages with a transport chain are integrated with each other, and the plate portion is arranged in a traveling direction of the transport chain. On the other hand, a top plate for a transport chain, characterized in that a protrusion is formed at one end and a notch that fits the protrusion is formed at the other end. 2. The top plate for a transport chain according to claim 1, wherein the leg portion is press-fittable between adjacent rollers of the transport chain at a central portion of a lower surface of the plate portion. 3. The leg portions are formed at both side end portions of the plate portion so as to be engageable with the shaft ends of adjacent connecting pins of the transport chain, respectively.
Top plate for the described transport chains.