JPS63185709A - Round belt driven corner roller conveyer - Google Patents

Abstract

PURPOSE:To facilitate belt replacement of the above stated title by passing an endless round belt through a sprocket, which plural number is to be driven by a chain running along the curved corners inside a frame, a change-direction sheave and a corner roller. CONSTITUTION:In consequence of a sprocket 21 turned by a chain 4, an endless round belt 7 passing through a sheave 20, a change-direction sheave 6 and a groove 10 on a roller 2 is driven to cause the rollers 2 to rotate all together. With this constitution, the roller 2 are rotated with the identical peripheral speed by making the round belt 7 identical in shape and dimension. To replace a worn belt, a roller shaft 8 is to be removed from a frame by lifting the roller 2, the worn belt 7 removed and the new belt 7 fitted. Consequently, the bel replacement can be done easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a round belt driven corner roller conveyor that drives an endless round belt over rollers.

[Conventional technology] Roller conveyors have a line shaft installed at the bottom of the rollers in a direction orthogonal to the roller axis, and an endless belt is placed between the line shaft and each roller.The roller conveyor is quiet, has no pulsation, and can stably transport lightweight items. Because it can be transported to a wide range of locations, it is increasingly being used in factories manufacturing electronic parts, pharmaceuticals, etc. When setting a conveyance line with such a belt-driven roller conveyor, the corner roller A7 has several line shafts bent at the corner parts, connected by a universal joint at each bent part, and then The belt was wrapped around the corner roller.

[Problem to be Solved by the Invention 1] As mentioned above, in the conventional corner conveyor, the line shafts arranged at the corner portions are bent, so that the line shafts arranged at the corner portions are bent, so that the line shafts are bent on the same circumference of the conical corner rollers. It is not possible to use a 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 bent line shafts are connected by a universal joint, it is expensive and the conductivity is reduced. Furthermore, since an endless round belt is placed between the line shaft and each roller, it is very difficult to replace the round belt when it is damaged.

SUMMARY OF THE INVENTION An object of the present invention is to provide a round belt-driven corner roller conveyor in which the circumferential speed of the rollers at the corner portion is the same, and the round bevel belt can be easily replaced by using one type of J-ra. be.

[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 provides 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 shaft portion of the sprocket and a sheave for changing direction are installed in the frame. 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 portions have the same shape and size, and the endless round belt also has the same size and length. It has a direction changing sheave that turns the running of the round belt 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 placed between adjacent rollers, the belt will be passed through the sheave for changing direction. A common round belt is passed between the rollers.

[Function] Each roller rotates at a circumferential speed due to the rotation of the endless round belt that runs between the sheave provided on the shaft of the sprocket and the rollers, so items at the corners 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 I--n in FIG. 1. In the figure, 1 is a frame that curves into an arc, 2 is a number of rollers installed radially between the frames, 3 is a gear box installed at the end of 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 at , 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 notches 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.-0
The rollers in the first section are all 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. A gear box 3 provided at one end of the corner conveyor is supplied with driving force from a line shaft 12 of an adjacent linear conveyor via a sprocket and a chain. A master sprocket 13 is provided on the top surface of the gearbox 3, and a series of chains 4 are threaded between the master sprocket 13 and each sprocket 21 of a drive sprocket assembly 5 disposed within the frame.

The drive sprocket assembly 5 is supported by a support member provided within the frame, as shown in FIG. That is, a rod 15 is erected on the horizontal members 11 that are horizontally suspended at intervals within the frame, and a vertical support plate 16 having the same curvature as the corner curvature when viewed from the plane is fixed to the upper half of the rod 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 as to be adjustable in height. 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, and a shaft 19 is erected on the horizontal support plate 18 to support the sub I coquette 21. A cylindrical part or a hollow shaft part 22 is integrally formed on the upper part of the sprocket 21 to which the sheave 20 is fixed, and a bearing 23 with a collar is placed over the upper end of the cylindrical part 22. Instead of fixing the sheave 20 to the cylindrical part 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, a sheave 2 is attached to the cylindrical portion 22.
0 may be fitted so as to be rotatable and slidable in the vertical direction.

In the corner conveyor, when the master sprocket 13 of the gear box 3 rotates, each sprocket 21 rotates via the chain 4. Drive sprocket 2
1 rotation, the endless round belt 7, which is passed through the sheave 20h1, the direction changing sheave 6, and the groove 10 of the roller 2, is driven to run, and each roller 2 rotates at the same time.

Since the round belts have the same shape and dimensions, the rollers are rotated at the circumferential speed. If the endless round belt 7 is cut or damaged, lift the roller 2 upward and remove it from the frame 1.
After removing the roller shaft 8 and lifting the roller 2 upward through the notch 9, a new endless round belt is passed between the roller groove 10, the sheave 20, and the direction changing sheave 76 to return the roller to its original state. By setting it to , the round belt can be easily replaced. In addition, Figure 5,
When the sheave 20 is fitted into the cylindrical portion 22 as shown in FIG. 6, 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. In the embodiment shown in FIGS. 1 to 6, a sprocket 21 is arranged at the bottom of each roller,
Although one round belt is shown running on each roller through a sheave 6 for changing direction, in the case of FIG. A common round belt 7 is placed between both adjacent rollers via a direction changing sheave 6.6 provided at the bottom of both rollers. With this configuration, it is possible to reduce the number of drive sub-L1 bracket assemblies 5 by half, thereby reducing costs. However, if the corner rollers are an even number, all the rollers can be configured as shown in Figure 8, but if the corner rollers are an odd number, the end rollers can be configured as shown in Figure 6, 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 that the sheave can be freely removed between it and each corner roller. Since the endless round belt is passed around, not only the transmission rate is high, but also only one type of rubber and one type of round belt of the same size are required, making it easy to replace the round belt. Furthermore, 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 portion is the same, making it possible to stably transport the article. 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 system which connects line shafts bent at conniversal joints.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the 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 of the corner roller group in Fig. 1 with the corner roller group removed. Figure 4 is an enlarged sectional view taken along line IV-IV in Figure 1, Figure 5 is a partially cutaway front view of a modified example of the sprocket, and Figure 6 shows how to attach a round belt. FIG. 7 is an enlarged plan view of the modified embodiment with the corner row 9 group removed, and FIG. 8 is a perspective view showing how to attach the round belt. 1...Frame, 2...Roller, 3...Gear) Abox, 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 portion.

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. A plurality of sprockets driven by a chain are provided, a sheave for changing direction is installed near the sprocket, and a removable endless round belt is passed between the shaft of the sprocket, the sheave for changing direction, and the corner roller. A round belt driven corner roller conveyor featuring: 2. The round belt driven corner roller conveyor according to claim 1, wherein the rollers forming 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 passed 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 manner such that both ends of the shaft fall into a notch formed in the frame.