KR100930259B1 - Accumulation rollers for conveying conveyors - Google Patents

Abstract

The present invention relates to an accumulator roller used in a conveying conveyor, and more particularly, to a drive unit formed to be driven by a belt or a chain between the end roller of the conveyor and the pre-end roller, and to be durable and replaceable with static electricity. In addition, two friction plates provided with a vacuum exhaust groove in at least one of a material of release and at least one so as to prevent a vacuum state caused by friction during the power transmission and sticking thereto, and an elasticity to equalize the friction force between the two friction plates. A member and an accumulation roller used for a conveying conveyor for smoothly operating the conveyor due to its simple structure and low cost by being composed of driven wheels formed with elastic adjustment holes to arbitrarily adjust the elastic force of the elastic member. will be.

Description

Accumulation Roller for Transfer Conveyor {ACCUMULATION ROLLER FOR CONVEYOR SYSTEM}

The present invention relates to an accumulator roller used in a conveying conveyor, and more particularly, to a drive unit formed to be driven by a belt or a chain between the end roller of the conveyor and the pre-end roller, and to be durable and replaceable with static electricity. In addition, two friction plates provided with a vacuum exhaust groove in at least one of a material of release and at least one so as to prevent a vacuum state caused by friction during the power transmission and sticking thereto, and an elasticity to equalize the friction force between the two friction plates. A member and an accumulation roller used for a conveying conveyor for smoothly operating the conveyor due to its simple structure and low cost by being composed of driven wheels formed with elastic adjustment holes to arbitrarily adjust the elastic force of the elastic member. will be.

BACKGROUND ART Conventionally, conveyors, which are used to transport parts, finished products, or pallets for loading pallets in manufacturing plants and warehouses, are known to be transported through a plurality of transfer rollers connected to a drive shaft. .

In particular, there are those configured to stop the object by protruding a stopper disposed on the conveyance path in order to take out the object to be conveyed in this conveyor mechanism. At this time, if the conveyor drive mechanism is stopped every time the object to be conveyed is stopped, the power consumption is increased at restart, which is inefficient and the device is likely to be burned out. And drive mechanisms such as a transfer roller are configured to rotate as they are.

To this end, conventionally, a conveyor using an accumulation roller using a pair of magnet disks, in which an N pole and an S pole are alternately disposed between the drive side and the driven side of the conveyor mechanism, is connected to the drive side chain and is connected to the shaft. It comprises a sprocket condensed to the member, and a conveying roller disposed adjacent to one side of the sprocket and condensed on the shaft member. In addition, the magnet disk is integrally mounted on one side of the sprocket and the transfer roller facing each other, and a steel plate is mounted on the other side facing the sprocket. In addition, a thrust bearing is interposed between the sprocket and the feed roller, and the thrust bearing can maintain a gap between the sprocket and the feed roller.

Therefore, when the object to be conveyed is stopped by a stopper or the like to transfer power by the magnetic force of the pair of magnet disks spaced by a predetermined interval, and the conveyor mechanism is overloaded, slip is generated between the magnet disks. Idle the drive mechanism to prevent overload.

However, such a conveyor mechanism has a problem that it is difficult to maintain an appropriate level of braking force against overload because the suction force of the magnet is rapidly changed according to the minute change in the gap between the magnet disk and the steel plate.

In addition, the steel ball in the thrust bearing is attracted by the magnetic force of the magnet disk, the steel ball located in the retainer of the thrust bearing is oriented in one side from the correct position, there was a problem that the rolling operation of the precision roller is not achieved, thereby operating There was a problem in that uneven wear occurs in the noise increases or durability is reduced.

1 is a view showing an accumulation roller used in the conventional transport conveyor proposed to improve the above problems.

As shown, the accumulation roller 10 used in the conventional conveying conveyor (1) is connected to the drive chain (3) for transmitting the driving force by the drive motor (2) is condensed on the shaft member (11) A sprocket 12 and a feed roller 15 disposed adjacent to one side of the sprocket 12 and disposed coaxially with the sprocket 12, wherein the sprocket 12 and the feed roller 15 In the conveyor mechanism to be approached or retracted from each other, the elastic member 16 is disposed coaxially with the shaft member 11 on one side of the transfer roller 15 or the sprocket 12 facing each other, and the elastic The first friction plate 13, which is disposed in front of the member 16 and is pressed by the elastic member 16, and the other of the sprocket 12 or the transfer roller 15 opposite to the first friction plate 13. The second friction plate 14 mounted on the side and the shaft member 11 is screwed to the sprocket 12 and the It comprises a control nut 17 for adjusting the elastic force of the elastic member 16 by adjusting the distance of the roller 15 to maintain a moderate level of braking force against overload and the wear of the conventional magnetic disk It was effective to reduce.

However, the accumulator roller used in the conveyor has a problem that the friction plate and the elastic member are damaged due to the twisting of the truncated truncated elastic member due to the friction caused by the rotation of the elastic member and the friction plate adjacent thereto when the roller is rotated. There is this.

In addition, the conventional accumulation roller has a problem that the friction force between the friction plates adjacent to each other by the non-uniform elastic force of the elastic member is non-uniform, and damage caused by static electricity in the product transported on the conveyor by the static electricity generated when the friction plate friction. .

In addition, in the prior art, the shape of the elastic member is manufactured in the shape of a truncated cone, and the elastic force of the elastic member cannot be arbitrarily adjusted because the elastic member of the elastic member can be indirectly adjusted by adjusting the distance between the sprocket and the feed roller. Therefore, although the accumulating force has to be changed according to the weight of the object to be conveyed, in the related art, There was no function to adjust the friction, which made it difficult to use.

In addition, in the conveyor using a conventional accumulation roller in the non-driven section existing between the end roller and the pre-roller in the prior art using the elasticity that the object is transported, but this is affected by the weight and speed of the object, so In order to supplement, there is a problem in that separate driving devices are often installed at both ends.

Furthermore, in the conventional accumulation roller, when the object to be conveyed is stopped by a stopper or the like, the slippage occurs between the two friction plates to cause the driving mechanism of the conveyor mechanism to idle. There is a problem that the vacuum state occurs between the strong close to each other and stick together to fail to idle the drive mechanism of the conveyor mechanism.

The present invention is to solve the above problems, the material of the first friction plate and the second friction plate is different, but the corrosion, heat resistance, wear resistance, and electrical properties to improve the damage to the product transported on the conveyor due to static electricity during friction An object of the present invention is to provide an accumulation roller used in a conveyor for transport configured to reduce as much as possible.

In addition, the present invention provides an accumulator roller for a conveying conveyor configured to prevent breakage by preventing the vacuum state between the two friction plates generated during the friction of the first friction plate and the second friction plate to allow idle rollers to idle. It aims to provide.

In addition, an object of the present invention is to provide an accumulation roller for use in a conveying conveyor that can arbitrarily adjust its tension without changing the elastic member provided for durability.

In addition, an object of the present invention is to provide an accumulation roller for use in a conveyor for transport configured to be driven by a belt or a chain in a non-driven section existing between the end roller and the pre-end roller in the conveyor.

In order to achieve the above object, a first embodiment of an accumulation roller used in a conveying conveyor according to the present invention is an accumulation roller used in a conveying conveyor, wherein one end of the accumulating roller is perpendicular to the axial direction in order to engage with the conveyor. To form a fixing hole and the other side to form a shaft fixing groove in the center of the shaft in the axial direction so as to fasten the bolt, the snap ring groove formed in a predetermined position to install a plurality of snap rings to prevent the separation of the plurality of bearings A shaft having a; A first bearing insertion groove formed before and after each of the shafts to penetrate the center portion, and a bearing inserted into the shaft coaxially with the shaft; It has a locking jaw, and the outer surface coupled to the first friction plate having a sprocket for receiving the driving force from the chain connected to the motor used for the conveyor and a first locking projection for transmitting the driving force to the power transmission unit A rotatable drive unit positioned between the sprocket and the surface coupling unit and having a driving groove for driving the belt between the end roller of the conveyor and the roller before termination; A first friction plate allowing the shaft to penetrate to the center portion and having a first locking groove for engaging the surface coupling portion of the driving portion; A second friction plate allowing the shaft to penetrate to the center portion, the second friction plate being provided to abut against the first friction plate, and having a second locking groove for engaging with the power transmission unit; The shaft penetrates to the center, and one side has a second locking protrusion for engaging the surface with the second friction plate, and the other side has an elastic member fixing groove and a power for transmitting rotational power so that the position of the elastic member is fixed. A power transmission unit having a transmission projection; A second bearing jaw formed so that the shaft penetrates to the center portion and has a second bearing insertion groove formed therein so as to insert a bearing inserted into the shaft back and forth coaxially with the shaft; In order to receive power transmission from the power transmission protrusion of the power transmission unit, a power transmission groove to which the power transmission protrusion is coupled, and an elastic member insertion groove which is partially inserted into the elastic member is inserted, and the outer circumferential surface is enclosed. It comprises a rotatable driven wheel coated with urethane, but formed a non-slip groove for preventing the sliding of the urethane coating layer.

In addition, a second embodiment of the accumulation roller used in the conveyor for conveying according to the present invention is characterized in that the driving groove is configured as a sprocket when driving with a chain in a non-driven section.

In the present invention, at least one of the first friction plate and the second friction plate is characterized by having a vacuum exhaust groove formed by forming a groove on the surface in contact with each other. At this time, the vacuum exhaust groove is characterized in that configured in the '+' shape.

In the present invention, the driven wheel is characterized in that it further comprises an elastic adjustment hole formed by drilling at least two holes to be connected to the elastic member insertion groove in order to adjust the tension of the elastic member.

In the present invention, the first friction plate and the second friction plate are characterized in that they use different materials. At this time, the first friction plate or the second friction plate is characterized in that the ceramic material.

In the present invention, the bearing and the snap ring is characterized in that each provided with four.

Accumulation roller used in the conveying conveyor according to the present invention is different from the material of the first friction plate and the second friction plate, but any one composed of a ceramic material, to improve the corrosion, heat resistance, wear resistance, and electrical properties to the static electricity during friction There is an effect to minimize the damage to the product to be transported on the conveyor caused and prevent the vacuum between the two friction plates.

In addition, the present invention is provided with a vacuum exhaust groove in at least one of the first friction plate and the second friction plate to prevent the vacuum state between the two friction plates generated during friction, the object to be conveyed is stopped by the stopper of the conveyor and the conveyor mechanism In case of overload, slip occurs between the two friction plates, and the driving mechanism of the conveyor mechanism is idled, thereby preventing damage.

In addition, the present invention is provided with an elastic adjustment hole for adjusting the tension of the elastic member provided to increase the durability, there is an effect that can arbitrarily adjust the tension of the elastic member without replacing the elastic member.

In addition, the present invention by forming a drive groove or drive sprocket to be driven by a belt or chain, there is an effect that does not need to install a separate drive device even in the non-driving section existing between the end roller and the pre-end roller in the conveyor.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the accumulation roller used in the conveyor for transport according to the present invention will be described in detail.

2 is a cross-sectional view of an accumulation roller used in the conveyor for conveyance according to the present invention.

As shown, the accumulation roller 100 used in the conveyor for conveyance according to the present invention includes a shaft 130, a driving unit 140, a first friction plate 150, a second friction plate 160, and a power transmission unit 170. , An elastic member 180, and a driven wheel 190.

The shaft 130 forms a fixing hole 131 perpendicular to the axial direction at one end of the shaft 130 to be fastened with the conveyor for conveyance, and the other side forms a shaft fixing groove 132 at the center of the shaft in the axial direction to fasten the bolt. do. In addition, the plurality of bearings 120 is provided with a snap ring groove 133 formed at a predetermined position in order to install a snap ring 110 to prevent separation and separation. In one embodiment of the present invention, four bearings 120 and a snap ring 110 are used. At this time, the snap ring 110 is to be installed in close contact with the bearing 120.

And, as shown in the shaft 130, the drive unit 140, the first friction plate 150, the second friction plate 160, the power transmission unit 170, the elastic member 180, and the driven wheel 190 ) Is fastened through the center part.

The drive unit 140 has a sprocket 143 on the outside in order to receive a driving force from a chain (not shown) connected to a motor (not shown) used in the conveyor.

In addition, the driving unit 140 includes a first locking protrusion 144 for transmitting the driving force to the power transmission unit 170 to form a surface coupling part 145 which is surface-coupled with the first friction plate 150. . At this time, the first locking projection 144 is preferably configured to protrude convex in the '+' shape.

On the other hand, between the sprocket 143 and the surface coupling portion 145 of the drive unit 140 is provided with a driving groove 146 for driving the belt between the end roller of the conveyor and the roller before the end, that is, in the non-driven section This is preferred.

At this time, the driving groove 146 may be formed in a V-shaped or circular groove shape according to the shape of the belt to be connected. When the driving groove 146 has a small and small volume of a moving object on the conveyor, a non-driving section of the grafting section between the conveyor and the conveyor is wide so that the moving object does not move smoothly or stops or stops at all. This is to prevent this.

In addition, the driving groove 146 may be configured as a sprocket (not shown) to drive the chain.

In addition, the first bearing insertion groove 141 and front and rear, respectively, formed in front and rear to insert the bearing 120 fitted to the shaft 130 coaxially with the shaft 130 in the driving unit 140. The inserted bearing 120 is provided with a first locking step 142 formed to be fixed to each inside. As shown, the bearings 120 inserted into the front and rear, respectively, are fixed to the first locking jaw 142 and fixed to the outside by the snap rings 110, respectively. ) To be combined.

The first friction plate 150 has a first locking groove 151 for surface coupling with the surface coupling portion 145 of the driving unit 140. At this time, the first locking groove 151 is preferably formed as a concave groove to be fastened to the first locking projection 144 in a '+' shape. For reference, in the drawing of FIG. 2, the first locking protrusion 144 and the first locking groove 151 are engaged with each other and are displayed in the same area.

The second friction plate 160 is installed in contact with each other and the first friction plate 150 is configured to transmit power by the friction force. In addition, the second friction plate 160 includes a second locking groove 161 for surface coupling with the power transmission unit 170. At this time, the second locking groove 161 is preferably formed as a recessed groove in the '+' shape.

On the other hand, it is preferable that the first friction plate 150 and the second friction plate 160 use different materials. The different materials of the two friction plates are to prevent a vacuum occurring between the two friction plates when the two friction plates transmit power by friction.

The power transmission unit 170 is provided with a second locking protrusion 171 so that one side is coupled to the surface of the second friction plate 160, and the other side of the elastic member fixing groove for fixing the elastic member 180 is fitted ( 172 and a power transmission protrusion 173 for power transmission. At this time, the second locking protrusion 171 is preferably formed to be convex so as to be fastened to the second locking groove 161 of the second friction plate 160 in a '+' shape. For reference, in the drawing of FIG. 2, the second locking protrusion 171 and the second locking groove 161 are engaged with each other and are displayed in the same area.

The driven wheel 190 has a second bearing insertion groove 191 formed in front and rear to insert the bearing 120 fitted to the shaft 130 back and forth coaxially with the shaft 130 and the front and rear, respectively. The power transmission protrusion 173 is coupled to receive the power transmission from the second transmission projection 192 and the power transmission protrusion 173 of the power transmission unit 170 formed therein so as to fix the respective bearings 120. Is provided with a power transmission groove 193 and the elastic member 180 is inserted into the elastic member 180 is partially fixed.

At this time, one embodiment of the elastic member 180 using a spring, wound in a cylindrical shape elastic member fixing groove 172 of the power transmission unit 170 and the elastic member insertion groove of the driven wheel 190. It is preferable to install so as to be fitted to the (194).

In addition, the outer side of the driven wheel 190 is preferably coated with a urethane to surround the outer circumferential surface, in order to prevent the urethane coating layer 196 from slipping groove 197 below the urethane coating layer 196 It is formed on the outer circumferential surface.

Here, the driven wheel 190 is an elastic control hole 195 formed by drilling a plurality of holes to be connected to the outside at a position corresponding to the elastic member insertion groove 194 to adjust the tension of the elastic member 180. It is preferable to further provide). More preferably, they are formed at positions facing each other with respect to the central axis.

At this time, the elastic control hole 195 is formed to form an even number, such as two, four or six to face each other or to form a circumference at a uniform distance.

3 is a view showing an embodiment of the first friction plate (a) and the second friction plate (b) used in the accumulation roller used in the conveying conveyor according to the present invention.

As shown, the first friction plate 150 forms a hole so that the shaft 130 passes through the center portion, and the first locking protrusion 144 formed in the surface engaging portion 145 of the driving unit 140. It has a first locking groove 151 for coupling with. At this time, the first locking groove 151 is preferably formed to correspond to the shape of the first locking projection 144. Typically, the first locking protrusion 144 is formed of a convex protrusion of a dot protrusion or a '+' shape, and correspondingly, the first locking groove 151 is formed of a concave groove of a concave groove or a '+' shape. do.

The second friction plate 160 allows the shaft 130 to penetrate to the center portion, and is installed in contact with the surface of the first friction plate 150 to face each other so that power is transmitted by a frictional force. In addition, the second friction plate 160 includes a second locking groove 161 for engaging with the second locking protrusion 171 formed on the power transmission unit 170. At this time, the second locking groove 161 is preferably formed to correspond to the shape of the second locking projection 171. In addition, in this case, the second locking protrusion 171 may be formed as a dot protrusion or a convex protrusion having a '+' shape, and the second locking groove 161 may be a concave groove having a concave groove or a '+' shape. To form.

Here, it is preferable that the first friction plate 150 and the second friction plate 160 constitute a vacuum exhaust groove 162 formed as a groove on a surface where at least one is in contact with each other. At this time, the vacuum exhaust groove 162 is preferably formed in a '+' shape to allow the outside to be configured to prevent the vacuum state.

In addition, it is preferable that the first friction plate 150 and the second friction plate 160 use different materials. The vacuum exhaust grooves 162 and the materials of the two friction plates are different from each other to prevent a vacuum state between the two friction plates when the two friction plates transmit power by friction.

On the other hand, at least one of the first friction plate 150 or the second friction plate 160 is preferably made of a ceramic material, and the other is preferably composed of a material such as Teflon or acetal. At this time, the ceramic is preferably configured using such as alumina or zirconia.

The ceramic is to improve corrosion, heat resistance, abrasion resistance, and electrical properties to minimize damage to the product transported on the conveyor due to static electricity during friction. In particular, the first friction plate 150 and the second friction plate 160 is prevented from sticking to each other due to the vacuum state between the two friction plates generated when the friction between each other to allow the overloaded roller to idle idle damage This is to prevent friction, reduce friction and maintain a certain amount of friction.

Figure 4 is an exploded perspective view of the accumulation roller used in the conveying conveyor according to the present invention, Figure 5 is a partial cross-sectional perspective view of the accumulation roller used in the conveying conveyor according to the present invention, Figure 6 is a conveying according to the present invention It is a front perspective view of the accumulation roller used for a conveyor, and FIG. 7 is a rear perspective view of the accumulation roller used for a conveyance conveyor which concerns on this invention.

As shown, the accumulation roller 100 used in the conveyor for conveyance includes a shaft 130 penetrating through the center, a snap ring 110 and a bearing 120 fitted into and fixed to the shaft 130, and the shaft ( The driving unit 140 is disposed coaxially with the 130, the first friction plate 150, the second friction plate 160, the power transmission unit 170, the elastic member 180, and the driving wheel 190.

Description of the detailed shape structure of each component is the same as described in detail with reference to Figs. 2 and 3 will not be repeated in the following description.

The present invention described above is limited to the above-described embodiments and the accompanying drawings as various substitutional modifications and changes are possible within a range without departing from the technical spirit of the present invention for those skilled in the art. It doesn't happen.

1 is a view showing an accumulation roller used in a conventional conveyor for conveying,

2 is a cross-sectional view of an accumulation roller used in the conveyor for conveyance according to the present invention;

3 is a view showing an embodiment of the first friction plate (a) and the second friction plate (b) used in the accumulation roller used in the conveying conveyor according to the present invention,

Figure 4 is an exploded perspective view of the accumulation roller used in the conveying conveyor according to the present invention,

5 is a partial cross-sectional perspective view of the accumulation roller used in the conveyor for conveyance according to the present invention;

6 is a front perspective view of an accumulation roller used in a conveyor for conveyance according to the present invention;

7 is a rear perspective view of the accumulation roller used in the conveyor for conveyance according to the present invention.

*** Explanation of symbols for the main parts of the drawing ***

100: roller 110: snap ring

120: bearing 130: shaft

131: fixing hole 132: shaft fixing groove

133: snap ring groove 140: drive unit

141: first bearing insertion groove 142: first locking jaw

143: sprocket 144: first locking projection

145: surface coupling portion 146: driving groove

150: first friction plate 151: first locking groove

160: second friction plate 161: second locking groove

162: vacuum exhaust groove 170: power transmission unit

171: second locking projection 172: elastic member fixing groove

173: power transmission protrusion 180: elastic member

190: driven wheel 191: second bearing insertion groove

192: second locking step 193: power transmission groove

194: elastic member insertion groove 195: elastic adjustment hole

196: urethane coating layer 197: anti-slip groove

Claims (14)

In the accumulation roller used for conveying conveyors, In order to fasten the conveyor, one end forms a fixing hole perpendicular to the axial direction, and the other end forms a shaft fixing groove in the center of the shaft in the axial direction so as to fasten the bolt, and prevents a plurality of bearings from being separated and separated. A shaft having a snap ring groove formed at a predetermined position to install two snap rings; A first bearing insertion groove formed before and after each of the shafts to penetrate the center portion, and a bearing inserted into the shaft coaxially with the shaft; It has a locking jaw, and the outer surface coupled to the first friction plate having a sprocket for receiving the driving force from the chain connected to the motor used for the conveyor and a first locking projection for transmitting the driving force to the power transmission unit A rotatable drive unit positioned between the sprocket and the surface coupling unit and having a driving groove for driving the belt between the end roller of the conveyor and the roller before termination; A first friction plate allowing the shaft to penetrate to the center portion and having a first locking groove for engaging the surface coupling portion of the driving portion; A second friction plate allowing the shaft to penetrate to the center portion, the second friction plate being provided to abut against the first friction plate, and having a second locking groove for engaging with the power transmission unit; The shaft penetrates to the center, and one side has a second locking protrusion for joining the surface with the second friction plate, and the other side is for transmitting the elastic member fixing groove and the rotational power so that the position is fixed by the elastic member. A power transmission unit having a power transmission protrusion; A second bearing jaw formed so that the shaft penetrates to the center portion and has a second bearing insertion groove formed therein so as to insert a bearing inserted into the shaft back and forth coaxially with the shaft; In order to receive power transmission from the power transmission protrusion of the power transmission unit, a power transmission groove to which the power transmission protrusion is coupled, and an elastic member insertion groove which is partially inserted into the elastic member is inserted, and the outer circumferential surface is enclosed. Accumulation roller to be used for a conveyor for conveying, characterized in that it comprises a; a rotatable driven wheel coated with urethane and formed a non-slip groove for preventing the urethane coating layer slip. The method of claim 1, At least one of the first friction plate and the second friction plate is an accumulation roller used in the conveyor for conveying, characterized in that provided with a vacuum exhaust groove formed by forming a groove in contact with each other.  The method of claim 1, And the driven wheel further comprises an elastic adjustment hole formed by drilling at least two holes to be connected to the elastic member insertion groove in order to adjust the tension of the elastic member. The method according to any one of claims 1 to 3, Accumulation roller for use in a conveyor for conveying, characterized in that the first friction plate and the second friction plate using a material of different releases. The method of claim 2, Accumulation roller used in the conveyor for conveying, characterized in that the vacuum exhaust groove is configured in a '+' shape. The method of claim 4, wherein Accumulation roller for use in a conveying conveyor, characterized in that the first friction plate or the second friction plate is a ceramic material. The method of claim 1, Accumulation roller for use in a conveyor for conveying, characterized in that each of the four bearings and the snap ring. The method of claim 1, The driving groove is an accumulation roller used for a conveyor for conveying, characterized in that configured as a sprocket when driven by a chain. The method of claim 8, At least one of the first friction plate and the second friction plate is an accumulation roller used in the conveyor for conveying, characterized in that provided with a vacuum exhaust groove formed by forming a groove in contact with each other. The method of claim 8, And the driven wheel further comprises an elastic adjustment hole formed by drilling at least two holes to be connected to the elastic member insertion groove in order to adjust the tension of the elastic member. The method according to any one of claims 8 to 10, Accumulation roller for use in a conveyor for conveying, characterized in that the first friction plate and the second friction plate using a material of different releases. The method of claim 9, Accumulation roller used in the conveyor for conveying, characterized in that the vacuum exhaust groove is configured in a '+' shape. The method of claim 11, Accumulation roller for use in a conveying conveyor, characterized in that the first friction plate or the second friction plate is a ceramic material. The method of claim 8, Accumulation roller for use in a conveyor for conveying, characterized in that each of the four bearings and the snap ring.

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