JPH0336729B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a round belt drive corner roller conveyor in which an endless round belt of the present invention is driven by passing it over rollers.

[Prior art] A roller conveyor has a line shaft installed at the bottom of the roller in a direction orthogonal to the roller axis, and an endless belt is placed between the line shaft and each roller.
Because it is quiet, has no pulsation, and can stably transport lightweight items, it is increasingly being used in factories manufacturing electronic parts, pharmaceuticals, etc. When setting a conveyance line using such a belt-driven roller conveyor, a corner conveyor has several line shafts bent at the corners, connected by a universal joint at each bend, and then The belt was wrapped around the corner roller.

[Problems to be Solved by the Invention] As mentioned above, in the conventional corner conveyor, the line shaft arranged at the corner part is in a bent state, so that the line shaft arranged at the corner part is in a bent state. It is not possible to use a round belt, and it is necessary to prepare several types of rollers. Furthermore, since several types of round belts with different lengths must be used depending on the type of roller, the circumferential speed of each roller at the corner portion differs, resulting in an unstable conveyance state. Furthermore, since the bending part line shafts are connected by a universal joint, the cost becomes high and the conductivity decreases. Furthermore, since an endless round belt is placed between the line shaft and each roller, it is very difficult to replace a firepit if the round belt is damaged.

SUMMARY OF THE INVENTION An object of the present invention is to provide a round belt-driven corner roller conveyor that uses one type of roller, has the same circumferential speed of the rollers at the corner portion, and allows easy replacement of the round belt.

[Means for Solving the Problems] In order to achieve the above object, the present invention solves the above problems by arranging a chain drive mechanism at the corner and eliminating the line shaft bent through a universal joint. This is what I did. That is,
The present invention includes a chain running along a corner curve and a plurality of sprockets driven by the chain in a frame, and a sheave for changing direction is installed near the sprocket, and the shank of the sprocket is connected to a sheave for changing direction. This invention relates to a round belt driven corner roller conveyor characterized by a removable endless round belt running between a sheave and a corner roller.

The rollers that make up the corner part have the same shape and size, and the endless round belt has the same size and length. Between each roller and the sheave provided on the shaft (cylindrical or hollow shaft) of the drive sprocket It has a direction changing sheave that changes the running of the round belt by 90 degrees. The sheave of the drive sprocket shaft is not limited to being fixed to the shaft, but may be fitted to the shaft so as to be rotatable and slidable in the vertical direction.

Also, if a sheave for changing direction is arranged for each roller, one round belt will be passed around each roller, but if a sprocket is installed between adjacent rollers, the belt will be passed through the sheave for changing direction. A common round belt is passed between the rollers.

[Operation] Since each roller rotates at the same speed due to the rotation of the endless round belt that is placed between the sheave provided on the shaft of the sprocket and the rollers, the articles at the corner portion are stably conveyed. When the sheave of the sprocket shaft is rotatable and vertically slidable relative to the shaft, articles can be accumulated at the corner.

[Example] FIG. 1 is a plan view of a round belt driven corner roller conveyor of the present invention, and FIG. 2 is a sectional view taken along the line - in FIG. 1. In the figure, 1 is a frame that curves into an arc, 2 is a large number of rollers installed radially between the frames, 3 is a gearbox provided at the end of the frame 1, 4 is a chain, and 5 is a position along the corner curve in the frame. A plurality of drive sprocket assemblies are arranged, 6 is a sheave for changing direction provided near the drive sprocket assembly 5, and 7 is an endless round belt.

The above-mentioned corner roller conveyor usually has linear roller conveyors connected to both ends. Although not shown in the drawings, the linear roller conveyor is one in which a line shaft is provided below the rollers and is perpendicular to the roller axis, and an endless belt is placed between the line shaft and each roller. The driving force of the line shaft is transmitted to each roller 2 via a gear box 3, a chain 4, a sprocket 21, a direction changing sheave 6, and a round belt 7.

As shown in an enlarged view in FIG. 4, the corner roller 2 has both end shaft portions 8, 8 inserted into a notch 9 formed in the frame 1 in a drop-down manner. A groove 10 for hanging a round belt is formed at a position closer to the small diameter side than the center of the roller 2. All corner rollers are of the same size and have grooves 10 in the same position.

FIG. 3 shows the arrangement of each part of the roller drive mechanism with the corner roller 2 in FIG. 1 removed. The boy box 3 provided at one end of the corner conveyor is supplied with driving force from the line shaft 12 of the adjacent linear conveyor via a sprocket and chain. A master sprocket 13 is provided on the upper surface of the hollow box 3, and the master sprocket 13 and each sprocket 2 of the drive sprocket assembly 5 arranged in the frame are connected to each other.
A series of chains 4 are passed between the chain 1 and the chain 4.

The drive sprocket assembly 5 is supported by a support member provided within the frame as shown in FIG. That is, the rods 15 are erected on the horizontal members 11 that are horizontally suspended at intervals within the frame, and the vertical support plates 16 having the same curvature as the corner curvature when viewed from the plane are fixed to the upper half of the rods 15.
A screw is formed in the lower half of the rod 15, and a horizontal support plate 18 is fixed using a nut so that the height can be freely adjusted. A bracket 17 is provided on the vertical support plate 16 to attach a pair of sheaves 6 for changing the direction of the round belt.
Further, a shaft 19 is erected on the horizontal support plate 18 to support the sprocket 21. Sprocket 2
A cylindrical part or hollow shaft part 22 is integrally formed on the upper part of the sheave 20, and the cylindrical part 22 is fixed to the sheave 20.
A bearing 23 with a collar is placed over the upper end of the bearing. Instead of fixing the sheave 20 to the cylindrical portion 22, a groove serving as a sheave may be cut on the surface of the cylindrical portion.
Furthermore, as shown in FIGS. 5 and 6, the cylindrical portion 22
The sheave 20 may be fitted in the sheave 20 so as to be rotatable and slidable in the vertical direction.

In the above corner conveyor, gearbox 3
When the master sprocket 13 rotates, each sprocket 21 is rotated via the chain 4.
As the drive sprocket 21 rotates, the endless round belt 7, which is passed from the sheave 20 to the direction changing sheave 6 and then over the groove 10 of the rollers 2, is driven to travel, and the rollers 2 rotate all at once.

Round belts have the same shape and dimensions, so
The rollers are rotated at the same speed. If the endless round belt 7 is cut or damaged, lift the roller 2 upwards, remove the roller shaft 8 from the notch 9 of the frame 1, lift the roller 2 upwards, and insert a new endless round belt into the groove of the roller. 10, the round belt can be easily replaced by passing it between the sheave 20 and the direction changing sheave 6 and setting the roller to its original state. In addition, as shown in FIGS. 5 and 6, a sheave 2 is attached to the cylindrical portion 22.
When 0 is fitted, if an excessive load is applied to a portion, the sheave slips between the cylindrical portion and the sheave and exhibits an accumulation function. When the effective length changes due to elongation of the round belt, the belt length is adjusted by slightly raising or lowering the sheave 20 along the surface of the cylindrical portion 22.

FIGS. 7 and 8 show modified examples. 1st to 6th
In the embodiment shown in the figure, a sprocket 21 is arranged at the bottom of each roller, and one round belt is applied to each roller via a sheave 6 for changing direction, but in the case of Fig. 7, Both adjacent rollers 2,2
One drive sprocket assembly 5 is disposed between the rollers, and a common round belt 7 is run between the two adjacent rollers via direction changing sheaves 6, 6 provided at the bottom of both rollers. With this configuration, the number of drive sprocket assemblies 5 can be reduced by half, resulting in lower cost. However, when the number of corner rollers is even, all the rollers can be configured as shown in Figure 8, but when the number of rollers is odd, the end rollers are rounded as shown in Figure 7. It has a belt-hung configuration.

[Effects of the Invention] As described above, according to the present invention, a plurality of sprockets are provided at positions along the corner curves in the frame, and a sheave is provided on the shaft portion of the sprocket so as to be removable between each sprocket and each corner roller. Since the endless round belt is passed around, not only is the transmission rate high, but only one type of roller and one type of round belt of the same size are used, making it easy to replace the round belt. In addition, since each roller has the same shape and dimensions, and the drive sprocket shaft or sheave also has the same diameter,
The circumferential speed of each roller at the corner is the same, allowing for stable transport of items. Furthermore, since the corner rollers are driven by a drive sprocket and a chain, it has the advantage of being able to be manufactured at a lower cost than the conventional method in which line shafts bent at universal joints are connected.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a round belt driven corner roller conveyor of the present invention, FIG. 2 is a sectional view taken along the - line in FIG. 1, and FIG. 3 is a plan view with the corner roller group in FIG. 1 removed. FIG. 4 is an enlarged sectional view taken along the - line in FIG. 1, FIG. 5 is a partially cutaway front view of a modified example of the sprocket, and FIG. 6 is a perspective view showing how to hang a round belt. FIG. 7 is an enlarged plan view of the modified embodiment with the corner roller group removed, and FIG. 8 is a perspective view showing how to apply the round belt. DESCRIPTION OF SYMBOLS 1...Frame, 2...Roller, 3...Gearbox, 4...Chain, 5...Drive sprocket assembly, 6...Direction change sheave, 7...
Endless round belt, 8...Roller shaft, 9...
Notch, 10... Groove, 20... Sheave, 21...
Sprocket, 22...Cylindrical part.

Claims (1)

[Scope of Claims] 1. A corner roller conveyor in which an endless round belt is placed around a driving member provided in a frame and corner rollers arranged radially. In addition to providing a plurality of sprockets driven by a chain, a sheave for changing direction is installed near the sprocket, and a removable endless round belt is stretched between the shaft of the sprocket, the sheave for changing direction, and the corner roller. A round belt driven corner roller conveyor. 2. The round belt driven corner roller conveyor according to claim 1, wherein the rollers constituting the corner portions have the same shape and size. 3. The round belt driven corner roller conveyor according to claim 1, wherein the round belts have the same dimensions and the same length. 4. The round belt driven corner roller conveyor according to claim 1, wherein a sheave is provided on the shaft portion of the sprocket so as to be rotatable and slidable in the vertical direction. 5. The round belt according to claim 1, wherein a sprocket and a sheave for changing direction are arranged below each roller, and one round belt is wrapped around each sprocket, sheave for changing direction, and roller. Drive corner roller conveyor. 6. The round belt driven corner roller according to claim 1, wherein the sprocket is disposed between adjacent rollers, and the round belt is commonly extended between the adjacent rollers via a direction changing sheave at the bottom of both rollers. conveyor. 7. The round belt driven corner roller conveyor according to claim 1, wherein each corner roller is supported in a drop-down manner at both ends of the shaft in a notch formed in the frame.