JPH0240007Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to the structure of a roller conveyor that is easy to assemble and has a simple structure.

[Prior Art] A drive roller conveyor device in which a large number of divided cylindrical rollers are loosely fitted around a drive shaft and driven by rotational force applied by friction is generally known.

In such a conveyor device, in order to simplify the structure, the support bracket 1 supporting the roller shaft is constructed as shown in FIG. 6 or FIG. 7. The roller bearing 2 is supported by a support bracket 1 in which a plurality of U-shaped grooves 3 are formed. In addition, when the conveyor width is wide, the roller shaft 4 becomes long, so in order to prevent deflection, an intermediate shaft support 5 is provided between the left and right frames, and a plurality of grooves 6 are made in this shaft support 5. Currently, the structure is such that the intermediate portion of the shaft 4 is supported.

[Problems to be solved by the invention] However, providing a large number of grooves in the intermediate shaft support as in the past is cumbersome to process.
The cost will also be higher. In addition, the process of attaching the support to the conveyor frame requires precision, making it difficult to install.If the relative position of the groove machining position and the support bracket deviates, the shaft position will shift, which will hinder the rotation of the rollers. However, adjusting its position is not easy. In addition, since the grooves are exposed when viewed from the top, it looks unsightly, and improvements have been desired in this respect as well.

[Purpose of the invention] The present invention solves the above-mentioned problems of the conventional type, has a simple structure, is easy to install and remove, does not require grooves in the support, Moreover, the axis position deviation can be easily adjusted.
The purpose is to provide a roller conveyor that can be manufactured at low cost.

[Means for Solving the Problems] In other words, the present invention provides a drive roller conveyor in which a plurality of cylindrical rollers are loosely fitted onto the outer surface of a drive shaft to apply rotational force to the rollers. An intermediate support is installed in the middle of the conveyor frame along the length direction of the conveyor, and a support piece that projects upwardly from the intermediate support and is continuous in the length direction for supporting the middle of the drive shaft is provided, and A piece-shaped bearing holder is slidably attached to the upper side of the piece, and the piece-shaped bearing holder has a hole through which the drive shaft passes on a surface perpendicular to the drive shaft, and the supporting piece is inserted into the lower part of the holder. A matching insertion groove is provided, and the holder is attached to the support piece so that the upper surface of the holder does not protrude above the conveyance level formed by the outer peripheral surface of the roller.

[Example] Hereinafter, an example of the present invention will be specifically described with reference to the drawings.

In FIGS. 1 to 4, reference numeral 11 denotes a pair of left and right frames constituting the base frame of the conveyor, 12 an intermediate shaft support disposed between the frames 11, 11, and 13 a shaft support supported on the frame. The drive shafts 14 are a plurality of cylindrical rollers loosely fitted adjacent to the drive shaft 13, respectively.

The present invention is such that, in the roller conveyor device as described above, a bearing holder capable of absorbing the runout of the shaft 13 is attached between a pair of left and right frames 11, 11 as described below. That is, reference numeral 15 denotes a bearing holder, which is molded from a synthetic resin or a light alloy into a substantially piece shape as shown in FIG. This piece-shaped bearing holder 15 is located approximately at the center of its plate surface.
A through hole 16 into which the drive shaft 13 is inserted is provided, and a cylindrical bearing 17 is integrally fitted into the through hole 16. Also, at the bottom of the holder, there is an intermediate support 12 provided along the length direction of the conveyor.
A downward insertion groove 18 into which the upper side of the holder is inserted is formed in the width direction of the holder.

In the present invention, a longitudinally continuous support piece 12a is provided above the intermediate support, and
A plurality of piece-shaped bearing holders 15 configured as described above are prepared, and as shown in FIG. and use it. When installing, attach the intermediate support and the holder 1.
The groove width of the insertion groove 18 is formed slightly larger so that there is some play between the insertion groove 18 and the groove 5.
The holder is mounted so as to be movable back and forth on the frame or support as necessary in response to roller pitch or back and forth shaft wobbling. Further, as shown in FIG. 2, the upper surface of the holder is attached to the support piece 12a so as not to protrude above the conveyance level formed by the outer peripheral surface of the roller 14. Incidentally, in this example of use, only the holders 15a located at both ends are fixed to the intermediate support 12 with set screws 19.

When fitting the shaft 13 into the through hole 16 of the holder 15, first fit the bearing 17 into the through hole 16, or first attach the bearing 17 to the shaft 13, and then insert the shaft 13 horizontally into the through hole 16. Make sure to fit it in from the beginning. In such a case, remove the shaft 13 and bearing holder 15.
and bearing 17 are integrated, and unless the shaft is removed,
These never leave. After fitting the roller 14 onto the shaft 13 integrated in this way, the holder 15 is attached to the frame 11 and the intermediate support 12.
Attach it to the specified position above.

Since the holder 15 is slidably attached to the support, this holder not only holds the roller shaft, but also when changing the roller pitch or when shaft wobbling occurs in the longitudinal direction of the conveyor. By sliding the bearing holder in the longitudinal direction of the support, it is possible to adjust to the above-mentioned change in roller pitch and absorb shaft wobbling. Therefore, shaft wobbling in the axial direction or vertical direction of the roller shaft can be adjusted by appropriately inserting a spacer (not shown) between the insertion groove 18 and the frame or intermediate shaft support.

What is shown in FIG. 5 shows a modification of the bearing holder. This embodiment is an example in which a notch 20 is provided above the through hole 16 to open it, and a retaining protrusion 21 is provided on the opposite surface of the notch.
When formed in this way, the bearing 17 can be mounted and removed more easily than the bearing holder 15 shown in FIG. 5.

In the above embodiment, the bearing 17 is fitted into the through hole 16 and integrated, but the bearing 17 and the bearing holder 15 may be formed in advance by integral molding using synthetic resin. It is something. In addition, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present invention.

[Effects of the invention] As described above, according to the invention, there is no need to process and create many grooves in the intermediate support plate, etc., as in the conventional type, and it is easy to attach and detach the bearing holder to the conveyor frame. In addition, it has the advantage that it is easy to change the roller pitch and adjust the vertical, horizontal, and front-back axis vibration of the roller shaft, and it is easier to assemble, has a simpler structure, and is cheaper to form than conventional types. . Furthermore, during use, the bearing holder does not interfere with the conveyed object and has a good appearance.

[Brief explanation of the drawing]

Figure 1 is a front view of the roller conveyor of the present invention, Figure 2 is a front view of the roller conveyor of the present invention;
The figure is an enlarged view of the main part of Figure 1 with some parts cut away.
Figure 3 is a perspective view of the bearing holder, Figure 4 is an explanatory diagram showing the attachment relationship between the bearing holder and the intermediate support, Figure 5 is a front view showing a modified example of the bearing holder, and Figures 6 and 7 are conventional It is a perspective view and a front view which show a mold conveyor. 11...Frame, 12...Intermediate support, 1
2a... Support piece, 13... Drive shaft, 14... Cylindrical roller, 15... Bearing holder, 16... Through hole, 17... Bearing, 18... Insertion groove, 19...
... Set screw, 20 ... Notch, 21 ... Retaining protrusion.

Claims (1)

[Claims for Utility Model Registration] 1. In a drive roller conveyor configured such that a plurality of cylindrical rollers 14 are loosely fitted onto the outer surface of a drive shaft 13 to apply rotational force to the rollers 14, a pair of left and right conveyor frames 11. , 11, an intermediate support 12 is installed along the length direction of the conveyor, and a support piece 12a continuous in the length direction is provided on the intermediate support to protrude upward and support the middle of the drive shaft, A piece-shaped bearing holder 15 is slidably attached to the upper side of the support piece. The support piece 12a
The roller holder 15 is provided with an insertion groove 18 into which the holder 15 is inserted, and the holder 15 is attached to the support piece 12a so that the upper surface of the holder 15 does not protrude above the conveyance level formed by the outer peripheral surface of the roller 14. conveyor. 2 The hole 16 through which the drive shaft passes is open at the top, and has retaining protrusions 21, 21 on the opposing surface.
Claims 1 for Utility Model Registration
Roller conveyor as described in section. 3. The roller conveyor according to claim 1, wherein the bearing holder is a molded product made of synthetic resin or light alloy. 4. The roller conveyor according to claim 1, wherein the bearing 17 is integrally attached to the through hole 16 of the bearing holder.