JPH02193805A - Accumulate chain conveyer - Google Patents

Abstract

PURPOSE:To smooth the circulation travel and to prevent a conveyer from floating up by disposing leg parts of resin attachments between inner and outer link plates of a chain so as to give self-lubrication to the chain. CONSTITUTION:Both end small diameter parts 36 of a stay pin 35 which supports rotatably a resin cylindrical roller 31 are coupled together by two chains 32, 32. Each of these chains 32 is composed of a bushing 40 loosely fitted on the associated thin diameter part 36, a roller 41 loosely fitted on the outer peripheral section of the letter, and inner and outer link plates 42, 50. Leg parts 55 of resin attachments 33 each having a flat part 56 are disposed between the inner and outer link plates 42, 50. With this arrangement, no contact is made directly between the inner and outer link plates, and self-lubrication can be given by the resin leg part, resulting in more smoothness of travel of the conveyer. Further, the flat part of the attachment stabilizes articles on the conveyer, thereby it is possible to prevent the lower sections of the articles from being damaged.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to the following: When an object is loaded on a rotatable roller and the object is blocked during transportation, the roller idles.
The present invention relates to a so-called accumulating chain conveyor that can stop (accumulate) conveyed objects on the spot.

Prior art and its problems Conventionally, as an example of this type of accumulating chain conveyor (hereinafter simply referred to as "conveyor"),
There is a conveyor described in 9-194918, but in this conveyor, the center of the stay pin that rotatably supports the roller is located higher than the center of the pin of the two chains that connect the ends of the stay pin. However, when the rollers move from conveying to returning along the outer periphery of the sprocket, the distance between the stay pins widens, creating a gap between the rollers, which hinders the conveyance of the object.

Therefore, in order to deal with such problems, the method disclosed in Japanese Patent Application Laid-Open No. 61-90906,
As shown in FIGS. 8 and 9, a stay pin 12 that rotatably supports the roller 11 and a pin 14 of two chains 13, 13 that connect the ends of the stay pin 12 are integrated into a single shaft. .

The center of the stay pin 12 and the center of the pin 14 of the chain 13 are made to coincide. This conveyor 15 is provided with an attachment 16 that covers the chain 13 at the same height as the outer circumferential surface of the roller 11 and is integrated with an inner link plate 17 of the chain 13 so that the conveyed object W can be easily carried in and out from one side. ing.

However, in this conveyor 15, the attachment 16, the inner link plate 17 of the chain 13, and the outer link plate 18 are all made of metal, so the bottom of the conveyed object W is easily damaged, and the inner and outer links Plate 17.
There is a problem that 18 pieces come into contact with each other and generate noise. Furthermore, when the chain 13 runs out of oil, the bending resistance between the inner and outer link plates 16 and 17 increases.

As shown in FIG. 10, a part of the conveyor 15 lifts up, which may impede the loading and unloading of the conveyed object W or cause the conveyed object W to fall over during conveyance.

Means for Solving the Problems The present invention provides a plurality of stay pins that rotatably penetrate and support rollers on which conveyed objects are placed, two chains that connect the ends of the plurality of stay pins, and an outer part of each of the chains. The above problem is solved by an accumulation chain conveyor having a leg section interposed between a link plate and an inner link plate, and a resin attachment that covers the chain and has a flat section at the same height as the outer peripheral surface of the roller. It is.

For production in the chain as the conveyor moves in circulation.

Since the legs of the resin attachment are interposed between the outer link plates, there is no direct contact between the inner and outer link plates, eliminating contact noise and reducing bending resistance due to the self-lubricating properties of the resin. This reduces the amount of friction and makes the circulation of the conveyor smoother. Moreover, the flat surface of the attachment made of wood FI prevents damage to the bottom of the conveyed object.

Example Embodiments of the present invention will be described below based on the drawings.

The accumulation chain conveyor (hereinafter simply referred to as "conveyor") 30 mainly includes rollers 31, two chains 32, 32, and an attachment 33.

The plurality of rollers 31 are made of resin and have a cylindrical shape, and a stay pin 35 passes through them rotatably.

The chains 32, 32 connect the ends of the stay pin 35, respectively, and the narrow diameter portions 36, 36 at both ends of the stay pin 35 are connected to each other.
serves as a connecting pin for chains 32 and 32.

A roller 41 is loosely fitted to the outer periphery of a bushing 40 that is loosely fitted to the narrow diameter portion 36, and end portions 40a are provided at both ends.

Roller link plates (inner link plates) 42, 42 are press-fitted so that 40a protrudes.

These bushings 40, rollers 41, and roller link plates 42, 42 are integrated to form a roller link 43, as shown on the lower side of FIG. A pair of protrusions 44, 44 are formed at the upper end of the roller link plate 42 to engage with an attachment 33, which will be described later.

Pin link plate 50.5 at the root and tip of the narrow diameter part 36
0, and together with the narrow diameter portion 36 constitutes the pin link 51. At the tip of the narrow diameter portion 36, the roller link plate 43 and the pin link plate 50.
50 is removed, a clip 52 engages across the adjacent narrow diameter portion 36.

The attachment 33 is made by integrally molding a flat part 56 and leg parts 55.55, which are perpendicular to the flat part 56 and parallel to each other, by resin molding.

Each leg 55 has two holes 5 into which the bushing 40 is inserted.
7.57 and a vertical rib 58 having a shape that fills the space between adjacent pin lin plates 50.50.

The pair of legs 55.55 are connected to the roller link plate 42.
42 and the pin link plates 50.50, and the distance L1 is the same as the outer width L2 of the pair of roller link plates 43.43, as shown in FIG.

It's more than that. Further, the thickness W of each leg portion 55 is larger than the protrusion length L3 of the bushing 40 protruding from the roller link plate 42.
2 and the bushing 40 are prevented from coming into contact with the pin link plate 50. The flat part 56 has a width that covers the entire chain 32, and the upper surface 58a is at the same height as the outer circumferential surface 31a of the roller 31, and the back surface 56b is provided with a groove so as to escape the roller 41. Reinforcing rib 59, 59°5
9 is formed. Since the attachment 33 has a total thickness of about 1 to 2 mm, the attachment is reinforced and elastically strengthened by the vertical ribs 58, 58 and the reinforcing ribs 59, 59°59.

The attachment 33 having such a shape utilizes the elasticity of the resin to be combined with the roller link 43 (snap fit), that is, the legs 55° 55 are first opened outward against the elasticity, and then The bushing 40 is integrated in such a way that the hole 57 engages with the tip 40a of the bushing 40. At this time, the protrusions 44, 44 are inserted into the recesses 60, 60 between the reinforcing ribs 59.

In such a configuration, the conveyor 30 circulates by rotation of sprockets (not shown) engaged with the chains 32, 32, and conveys the conveyed object W loaded on the rollers 31. When the conveyance of W is regulated, the conveyed object W is stopped at that spot, but the conveyor 3o continues to circulate, and the roller 31 idly rotates against the stay pin 35 while passing the lower surface of the conveyed object W one after another. In other words, the conveyed objects W are accumulated.

In such an operation, the roller link link plate 42 and the pin link plate 50 are prevented from coming into direct contact with each other by the leg portions 55, 55 of the attachment 33 interposed therebetween, and the generation of contact noise as in the conventional case is avoided. disappears. Further, due to the self-lubricating property of the resin of the leg portions 55, the roller links 43 and the pin ring plate 5o can be smoothly bent with each other, and the circulation movement of the entire conveyor 30 can be smoothed. The conveyance surface formed is flat, and the objects to be conveyed are prevented from falling during conveyance, and the objects W can be carried in and out smoothly from both sides of the conveyor 30.

Furthermore, since not only the roller 31 but also the flat surface 56 is made of resin, the bottom of the conveyed object W will not be damaged.

Effects of the Invention As described above, in the accumulate chain conveyor of the present invention, the legs of the resin attachment are interposed between the outer and inner link plates.

Contact noise between the outer and inner link plates is no longer generated. Furthermore, the self-lubricating properties of the resin reduce bending resistance, making the conveyor's circulation smoother, and making it easier for the accumulating chain conveyor to maintain a flat state, thereby eliminating the possibility of objects toppling over during conveyance. Furthermore, if the accumulating chain conveyor is flat, objects can be carried in and out smoothly from both sides of the conveyor.

Furthermore, since the attachment is made of resin, its flat portion will not damage the bottom of the conveyed object.

[Brief explanation of the drawing]

1 to 7 show embodiments of the present invention, in which FIG. 1 is a new view of the main part taken at right angles to the direction of travel, and is a 1-1 arrow perspective view in FIG. Figure 2 is a plan view of the accumulating chain conveyor with a partially new surface; Figure 3 is the front view of Figure 2; Figure 4 is the right side view of Figure 2; Figure 5 is the attachment and roller link. Figure 6 (A) is a perspective view of the attachment, Figure 6 (B) is a plan view of the attachment.
is a front view thereof, FIG. 6(C) is a right side view thereof, and FIG. 7 is a sectional view taken along arrow 7-7 in FIG. 6(C). FIG. 8 is a plan view of a conventional 7-cumulate chain conveyor and corresponds to FIG. 1, FIG. 9 is a front view of FIG. 8, and FIG. 10 is an enlarged right side view of FIG. 8, which is preferable. FIG. W...Conveyed object 30...Accumulate chain conveyor 31...
Roller 31a...Outer peripheral surface 35...Stay pin 32...Chain 33...Attachment 42...Roller link plate (inner link plate) 50...Pin link plate (outer link plate) 5
5... Leg portion 56... Flat portion Fig. 2 Fig. 3 Fig. 4 Fig. 6 Fig. 8 Fig. 9

Claims (1)

[Scope of Claims] A plurality of stay pins that rotatably penetrate and support rollers on which conveyed objects are placed, two chains that connect the ends of the plurality of stay pins, and an outer link plate and an inner link of each of the chains. An accumulating chain conveyor comprising a leg section interposed between plates and a resin attachment that covers the chain and has a flat section at the same height as the outer peripheral surface of the roller.