JP2512693Y2 - Chain conveyor device with a cover to prevent foreign matter from getting caught - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor chain having a large-diameter loading roller and a small-diameter traveling roller concentrically with a connecting pin, and a chain for laterally covering inner and outer link plates and traveling rollers of such a conveyor chain. The present invention relates to a chain conveyor device having a cover.

[0002]

2. Description of the Related Art A chain conveyor device of this type conveys (accelerates) a conveyed object on a loading roller at a speed higher than the traveling speed of the chain itself and, at the same time, retains the conveyed object to travel only the chain. It can be stored (accumulated) and is often used for transportation and assembly work. However, if foreign matters such as bolts and nuts fall during the assembling work, they may bite into the chain, causing damage to the rollers and stopping the conveyor. Therefore, in this type of chain conveyor device, a foreign matter trapping prevention cover is often attached. Fig. 8 and Fig. 9 show the actual development 62-
Cover 5 for preventing foreign matter from being caught in Japanese Patent Publication No. 197610
0 is shown. This foreign matter biting prevention cover 50
Is a flat plate shape integrally molded with the link plates 52 and 54.

[0003]

However, the foreign matter trapping prevention cover 50 has the following drawbacks. (1) Since the foreign matter biting prevention cover 50 has a flat plate shape, there is a gap between it and the traveling roller 58. Since foreign matters fall into the chain, it is impossible to completely prevent the roller from being damaged and the chain from stopping. (2) The chain cover 60 is provided so as to cover the chain and the foreign matter biting prevention cover 50. It penetrates into the chain without any resistance through 60. (3) The foreign matter biting-in prevention cover 50 is located radially outside the outer diameter of the small-diameter traveling roller 58. Therefore, the traveling roller 58 having a small diameter cannot be received by the rail on the return side of the chain. As a result, the large diameter loading roller 56
Will run on the rails. Therefore, the abrasion powder present on the rail adheres to the large-diameter loading roller 56, and the abrasion powder adheres to the conveyed object on the conveying side of the chain. (4) Since the loading roller 56 travels on the rail on the return side of the chain, the stability of the chain is impaired as compared with the case where the travel roller travels on the rail.

[0004]

SUMMARY OF THE INVENTION The present invention provides a conveyor chain having a large diameter loading roller and a small diameter traveling roller concentrically with a connecting pin that alternately connects an inner link plate and an outer link plate, and a conveyor chain of the conveyor chain. In a chain conveyor device having a chain cover that laterally covers the inner and outer link plates and the traveling rollers, the conveyor chain prevents foreign matter from being caught in the gaps between the adjacent loading rollers and the adjacent traveling rollers. The above problem is solved by a chain conveyor device including a cover, wherein the foreign matter biting prevention cover has a protrusion between the adjacent loading rollers, the projection having a surface lower than the outer diameter of the loading roller and higher than the lower surface of the chain cover.

[0005]

In the foreign matter biting prevention cover, the surface of the protrusion that covers between the adjacent loading rollers is at least higher than the lower surface of the chain cover. Therefore, the labyrinth is provided between the foreign matter biting prevention cover and the chain cover. Is formed, and foreign matter can be reliably prevented from entering the chain. Furthermore, by making the surface of the protrusion that covers between the adjacent loading rollers higher than the upper surface of the chain cover, foreign matter and wear debris will mainly fall or accumulate on the chain cover, and foreign matter will enter the chain cover. Hard to do.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. Since the basic structure of the chain is well known,
The description is omitted.

1 to 4 show an embodiment of the present invention. The conveyor chain 10 is concentric with the connecting pin 12, and has a large-diameter loading roller 14 for loading a conveyed object and a pair of small-diameter traveling rollers 18, 18 rolling on a rail 16.
And Loading roller 14 and traveling roller 18,1
Relative rotation with 8 is possible. In the case of this embodiment,
The loading roller 14 and the traveling roller 18 are made of resin, but may be made of metal.

The inner link plate 20 and the outer link plate 22 each have a window hole 24. Between adjacent large-diameter loading rollers 14, 14 and adjacent small-diameter traveling rollers 1
Foreign matter biting prevention covers 26 and 28 are attached to the window holes 24 of the inner link plate 20 or the outer link plate 22 so as to cover the space between 8 and 18. Therefore, the foreign matter biting prevention covers 26 and 28 have flexible engagement pieces 27 and 29. FIG. 1 shows a case in which a foreign matter biting prevention cover 26 is attached to the inner link plate 20 from the outside, and FIG. 2 shows a case in which a foreign matter bite prevention cover 28 is attached to the outer link plate 22 from the inside. .

The covers 26 and 28 for preventing foreign matter from being caught
It is attached to the inner link plate 20 and the outer link plate 22 by utilizing elasticity, but has a dimensional relationship such that the outer peripheral surfaces of the large-diameter loading roller 14 and the small-diameter traveling roller 18 maintain a non-contact state with a slight gap. Has become.

The covers 26 and 28 for preventing foreign matter from being caught
As shown in FIGS. 1 to 3, adjacent running rollers 1
Between 8 and 18, the outer diameter of the outer diameter of the traveling roller 18 is located inward in the radial direction. Therefore, the upper portion of the small traveling roller 18 projects from the foreign matter entrapment prevention covers 26 and 28. The foreign matter biting prevention covers 26 and 28 are
A protrusion 30 is provided on the upper surface of the loading rollers 14 and 14 adjacent to each other. As a matter of course, the protrusion 30 is located radially inward of the outer diameter of the loading roller 14 so as not to interfere with the conveyed object.

The conveyor chain 10 is covered with chain covers 32, 32 from both sides. Chain cover 3
2, 32 are provided so as to cover the inner and outer link plates 20, 22 and the traveling rollers 18, 18. The surface of the protrusion 30 is higher than the upper surfaces of the chain covers 32, 32.

5 to 7 are examples of link plates applicable to the present invention. FIG. 5 shows the link plate 20 (22) used in the above embodiment, in which a rectangular window hole 24 is formed in the center. The link plate 20 'of FIG. 6 has a circular window hole 24' formed in the center, and the link plate 20 "of FIG.
4 ″ and 24 ″ are formed. The protrusions provided on the flexible engaging pieces of the foreign matter biting prevention cover are engaged with these portions.

[0013]

According to the invention of claim 1, in the chain conveyor device, most of the chain cover is covered by the chain cover, and even between the partially exposed loading rollers, the space between them is covered by the foreign matter trapping prevention cover. Because
It is difficult for foreign matter and abrasion powder to enter the chain. In addition, the surface of the protrusion is higher than the lower surface of the chain cover between the chain covers that face each other in the width direction, so foreign matter and abrasion powder enter the chain from between the foreign matter biting prevention cover and the chain cover. It gets harder.

According to the second aspect of the present invention, since the surface of the protrusion is higher than the upper surface of the chain cover, the foreign matter, abrasion powder, etc. on the foreign matter entrapment prevention cover fall on the chain cover and catch the foreign matter. Since it does not deposit on the entrapment prevention cover, it is particularly suitable for the purpose of transporting and assembling articles that dislike dust.

[Brief description of drawings]

1 is a sectional view taken along line 1-1 of FIG. 3, showing an embodiment of a chain conveyor device according to the present invention.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a front view of the chain conveyor device of the present invention.

FIG. 4 is a plan view of the chain conveyor device of FIG.

5 is a front view of a link plate used in the chain conveyor device of FIGS. 1 to 4. FIG.

FIG. 6 is a front view of another embodiment of a link plate that can be used in the chain conveyor device of the present invention.

FIG. 7 is a front view of still another embodiment of the link plate usable in the chain conveyor device of the present invention.

FIG. 8 is a cross-sectional view of a conventional chain conveyor device.

9 is a plan view of the chain conveyor device of FIG. 8. FIG.

[Explanation of symbols]

 10 Chain Conveyor Device 14 Large Loading Roller 18 Small Running Roller 20 Inner Link Plate 22 Outer Link Plate 24, 24 'Window Hole 24 "Notch 26, 28 Foreign Material Entrapment Cover 30 Protrusion 32 Chain Cover

Claims (2)

(57) [Scope of utility model registration request] 1. A conveyor chain having a large-diameter loading roller and a small-diameter traveling roller concentrically with a connecting pin that alternately connects the inner link plate and the outer link plate, and the inner and outer link plates and the traveling roller of the conveyor chain on the side. A chain conveyor device having a chain cover for covering from above, wherein the conveyor chain includes a foreign matter catching prevention cover for covering a gap between adjacent loading rollers and a gap between adjacent traveling rollers. A chain conveyor device, characterized in that the prevention cover has a surface protrusion between adjacent load rollers that is lower than the outer diameter of the load rollers and higher than the lower surface of the chain cover. 2. The chain conveyor device according to claim 1, wherein a surface of the protrusion is higher than an upper surface of the chain cover.