JPS617111A - Conveyor device - Google Patents

Abstract

PURPOSE:To effect change in the conveying speed easily by changing only the number of gear tooth of a bevel gear in the conveying wheel section, in which a bevel gear unit is arranged to project outward at the side of an inner wheel in the conveying wheel section so that the bevel gear unit is geared with a bevel gear of a driving shaft. CONSTITUTION:A transmission shaft 32 is rotated when a motor 31 is powered, each of bevel gears 34 and 35, and bevel gears 26 attached on a driving shaft 22 by way of the driving shaft 22 are consequently rotated permitting a conveyor wheel 5 to be simultaneously rotated, since these bevel gears are in mesh of a bevel gear 21 of the inner wheel 8 in each of conveying wheel 5. Accordingly, a cargo starts being conveyed, when placed on a group of conveying wheel 5 which is arranged on the both sides. In this case, a partial change in the conveying speed can be obtained by chaning the outer diameter, i.e. the number of the gear tooth of the bevel gear 21 of the inner wheel 8 in the conveying wheel 5 concerned. That is, decrease (increase) in the number of the gear tooth of the above-mentioned gear 21 results in increase (decrease) in the conveying speed.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a conveyor device, and in particular to a free-flow type conveyor device that can freely stop articles being conveyed regardless of the drive of the conveyor device. Regarding.

[Technical background of the invention and its problems]

Conventionally, as this type of conveyor device,
1208 and Utility Model Application Publication No. 58-1.73613 are known, but in these, the outer circumferential surface of the drive wheel is in contact with the outer part of the shaft of the end surface of the conveyor wheel. Therefore, if the conveyance speed is partially changed depending on usage conditions, the axis of the conveyor wheel will get in the way, so it is possible to change the rotational speed of the conveyor wheel, that is, the conveyance speed, by changing the contact position of the drive wheel. Therefore, it is necessary to divide the drive shaft and change the rotational speed of the drive shaft or the outer diameter of the drive wheel, which poses a problem of complicating the drive mechanism.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to enable the conveyance speed to be partially changed without dividing the drive shaft.

[Summary of the invention]

A conveyor device according to a first aspect of the present invention includes a frame, a plurality of conveying rotating bodies arranged in parallel with each other on the frame, and having an outer ring rotatably fitted to the outer periphery of an inner ring having a bevel gear portion protruding from the end thereof;
A drive shaft is provided on the frame along the bevel gear portion of the inner ring of each of the conveyor rotors, and this drive shaft is provided with multiple stages corresponding to each of the conveyor rotors and is driven by meshing with the bevel gear portion of the inner ring. The feature is that it is equipped with a bevel gear that transmits the rotation of the shaft to the inner ring. With this configuration, by changing the outer diameter, that is, the number of teeth, of the bevel gear part of the inner ring of the conveying rotating body, the gear ratio with the bevel gear can be changed, and the drive shaft The conveyance speed can be changed partially without dividing.

The conveyor device of the second invention has a structure in which a collar is interposed between the inner ring and the outer ring of the conveying rotary body in the conveyor device of the first invention, and has similar effects.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A conveyor device of the present invention will be explained based on embodiments shown in the drawings.

In FIG. 1, 1 is a frame, and this frame 1 is
It has an outer wall part 2 and an inner wall part 3 which stand up in parallel on the upper part of both sides, and support pieces 4 are provided at a predetermined interval inside the outer wall part 2 on both sides. Between the support piece 4 and the inner wall portions 3 on both sides, a conveying hool 5 as a conveying rotary body is rotatably supported.

As shown in FIG. 2, each of the conveying wheels 5 is composed of an inner ring 8 and an outer ring 9 made of synthetic resin, and the inner ring 8 is supported by a small diameter portion 11 in the middle of a support shaft 10 via a bearing 12. At the same time, the outer ring 9 is rotatably fitted to the outer periphery of the inner ring 8 via a metal collar 13 to avoid friction between the same materials, and each of the above-mentioned support shafts 10 has a large diameter at its outer end. The portion 14 is attached to the support piece 4 with a screw 15, and the male threaded portion 16 at the inner end thereof is attached to the inner wall portion 3 with a nut 17. Note that 18 is a cover that holds the outer ring 9 and collar 13 on the outer periphery of the inner ring 8, and 19 is a collar.

Further, a bevel gear portion 21 is provided at the outer end of the inner ring 8 of each of the conveying wheels 5 on both sides, and a bevel gear portion 21 is attached to the large diameter portion of the support shaft 10.
4, and along the hevel gear part 21 of the inner ring 8 of each transport wheel 5 on both sides, between each support piece 4 on both sides of the frame 1 and the outer wall part 2 on both sides. A drive shaft 22 is rotatably supported by a plurality of bearings 23 attached to the outer wall portion 2, respectively.

As shown in FIG. 3, a plurality of bevel gears 26 made of synthetic resin are attached to the drive shafts 22 on both sides with screws 27 in correspondence with the respective conveyance wheels 5 on both sides. It is meshed with a heel gear portion 21 of the inner ring 8 of the wheel 5.

Further, a motor 31 is provided between the inner wall portions 3 on both sides of the frame 1.
A transmission shaft 32 is rotatably supported via a bearing 33, and a bevel gear 34 is attached to each end of the transmission shaft 32, and a bevel gear 35 meshing with each bevel gear 34 is connected to each of the above-mentioned Drive shaft 22
installed on.

Next, the operation will be explained.

When the motor 31 is driven to rotate the transmission shaft 32, the bevel gears 26 on both sides rotate in the opposite direction via the bevel gears 34, 35 and the drive shafts 22, and the inner rings of the bevel gears 26 and the conveyor wheels 5 rotate. By meshing with the bevel gear portion 21 of 8, the inner ring 8 and outer ring 9 of each conveyance wheel 5 on both sides rotate in the same direction.

Therefore, when an article is placed on each conveyor wheel 5 on both sides, the article can be conveyed.

Then, when the article being conveyed is stopped by a stopper or the like, slipping occurs between the outer ring 9 and the collar 13 and between the collar 13 and the inner ring 8 of the conveyor wheel 5 on which the article is placed, causing the article to be placed on it. The outer ring 9 of the conveyor wheel 5 in this state stops, and thereby the article being conveyed can be freely stopped without the outer ring 9 of the conveyor wheel 5 rubbing the lower surface of the article.

In this conveyor device, if the conveyance speed of the article is partially changed depending on the usage conditions, this can be done by changing the outer diameter, that is, the number of teeth, of the bevel gear part 21 of the inner ring 8 of the conveyor wheel 5 in that part. .

That is, if the outer diameter of the bevel gear section 21 is increased and the number of teeth is increased, the rotational speed of the conveyance wheel 5, that is, the conveyance speed is decreased, and conversely, when the outer diameter of the bevel gear section 21 is decreased and the number of teeth is decreased, The rotational speed of the conveyance wheel 5, that is, the conveyance speed increases.

Furthermore, as shown in FIG. 3, the bevel gear part 21 is connected to the inner ring 8.
If the outer diameter of the bevel gear part 21 is to be protruded from the inner ring 8, it is necessary to replace the inner ring 8 in order to change the outer diameter of the bevel gear part 21. Therefore, it is necessary to prepare inner rings 8 with bevel gear parts 21 of various outer diameters. There is, and it is not rational. As a countermeasure against this, as shown in FIG. 4, the inner ring 8 of the conveyor wheel 5 is composed of a bevel gear part 45 made of synthetic resin and a roller part 46 made of metal. Outer ring 9
If they are formed integrally with a cover 47 held on the outer periphery of the roller portion 46 of the inner ring 8, only the bevel gear portion 45 can be replaced. In this case, since the roller portion 46 is made of metal, the metal collar 13 as shown in FIG. 3 can be omitted. Moreover, in this case, the cover 47 is
As shown in FIG. 5, it is divided into two parts.

Further, FIG. 6 shows an example in which the conveyor wheels 5 on both sides are driven by the drive shaft 22 on one side, and the inner ring 8 is provided with a bevel gear portion 2.
1 is provided so as to be driven by the bevel gear 26 of the drive shaft 22, and the conveyance wheel 5 on the − side and the conveyance wheel 5 on the other side, in which the bevel gear portion 21 of the inner ring 8 is omitted, are connected by the interlocking cylinder 51. Both ends of the interlocking cylinder 51 are fitted between the inner ring 8 and the bearing 12, respectively.

Note that the conveyor device of the present invention is not limited to a wheel conveyor using the conveyance wheel 5 as a conveyance rotation body, but can also be applied to a roller conveyor using a conveyance roller as a conveyance rotation body. In this case, the conveyance roller is used as an outer ring. An inner ring 8 having bevel gear parts 21 is provided at both ends of the conveyance roller, and the bevel gear parts 21 at both ends are connected to the bevel gear 2 of the drive shaft 22.
It can be driven by 6.

〔Effect of the invention〕

As described above, according to the present invention, a bevel gear portion is provided protruding from the end of the inner ring of the conveying rotating body that is arranged in parallel with the shaft on the frame,
The bevel gear provided on the drive shaft was meshed with the bevel gear part of the inner ring of each of the transport rotors, and the rotation of the drive shaft was transmitted to the transport rotors. It is possible to change the rotational speed of the conveying rotor, that is, the conveying speed, by changing the rotation speed of the conveyor. Therefore, without splitting the drive shaft, the conveying speed of the conveyor device can be partially changed, and the drive mechanism It doesn't get complicated.

In addition, when selecting the material for the inner and outer rings of the conveyor wheel, if friction occurs between the inner and outer rings of the same material and there are problems with friction and stability of movement, it is recommended to This problem can be solved by intervening.

[Brief explanation of the drawing]

The figures show an embodiment of the conveyor device of the present invention, in which Fig. 1 is a partially cutaway plan view, Fig. 2 is a vertical cross-sectional view of the main part, and Fig. 3 is a cross-sectional view of the main part. FIG. 4 is a cross-sectional view of the main part showing a modification thereof, FIG. 5 is a structural diagram of the cover of FIG. 4, and FIG. 6 is a longitudinal sectional view of the main part showing another modification. 1... Frame, 5... Conveyance wheel as a conveyance rotating body, 8... Inner ring, 9... Outer ring, 13... Collar, 21.
45... Bevel gear part, 22... Drive shaft, 26... Bevel gear.

Claims (2)

[Claims] (1) A frame, a plurality of conveyor rotors whose outer rings are rotatably fitted to the outer periphery of an inner ring which is arranged in parallel with the shaft on the frame and has a bevel gear protruding from its end, and an inner ring of each conveyor rotor. A drive shaft provided on the frame along the bevel gear portion, and a plurality of bevel gears provided on the drive shaft corresponding to each of the conveying rotating bodies and meshing with the bevel gear portion of the inner ring to transmit rotation of the drive shaft to the inner ring. A conveyor device characterized by comprising: (2) A frame, a plurality of conveyance rotating bodies arranged in parallel to the frame with shafts, each of which has an outer ring rotatably fitted to the outer periphery of the inner ring with a bevel gear portion protruding from the end thereof, and a collar therebetween; A drive shaft is provided on the frame along the bevel gear portion of the inner ring of the rotary body, and a plurality of drive shafts are provided on the drive shaft corresponding to each of the conveying rotary bodies and mesh with the bevel gear portion of the inner ring to rotate the drive shaft. A conveyor device characterized by comprising a bevel gear for transmitting information to an inner ring.