JPH0797028A - Conveyor frame - Google Patents

Abstract

PURPOSE:To provide a conveyor frame in which a roller shaft of a transfer roller can be positioned and fixed easily. CONSTITUTION:A pair of stop parts 24a, 25a facing each other through a desired gap G are formed in a frame main body 22, and a shaft bearing member 23 having an engagement hole 27 to be engaged, with a roller shaft 33 of a transfer roller 32 is provided with a pair of engagement parts 28a, 28b to be inserted into the gap G by flexture deformation to be engaged with the stop parts 24a, 25b by restoration. By thus engaging the engagement parts 28a, 28b with the stop parts 24a, 25b. the shaft bearing member 23 can be fixed to the frame main body 22 easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor frame for rotatably supporting conveying rollers for conveying articles.

[0002]

2. Description of the Related Art As is well known, roller conveyors are often used in the physical distribution process for carrying and sorting articles. The basic structure of a roller conveyor is such that a conveyor roller is bridged over a pair of conveyor frames, and the fixing structure of the roller shaft of the conveyor roller is diverse as shown below. First, a first example of the conventional roller conveyor will be described with reference to FIG. 5, which has a structure in which a pair of conveyor frames 1 are rotatably hung over a conveying roller 2 at predetermined intervals. Only one of the pair of conveyor frames 1 is shown in FIG. Conveyor frame 1
Is manufactured by an extrusion method in which an aluminum material and its alloy are passed through an extrusion die (die) to produce an elongated product having an opening cross-sectional shape of the die. In the illustrated example, a hollow portion 3, a groove 4, and a pair of flanges 5a and 5b are formed in the longitudinal direction of the conveyor frame 1, that is, in the extrusion direction.

By the way, since the conveying roller 2 is stretched between the pair of conveyor frames 1, a concave bearing mechanism for supporting the roller shaft 6 is formed on the opposite side surfaces of the pair of conveyor frames 1. There is a need.
However, since the conveyor frame 1 is manufactured by extrusion, the hollow portion 3, the groove 4, and the flanges 5a, 5
Although it is easy to form the member in the extruding direction as shown in b, it is difficult to provide the bearing structure in the direction orthogonal to the extruding direction even if it is a recess. Therefore, in the example shown in the figure, a conveyor roller mounting member 8 in which recesses 7 for bearings are formed at desired intervals is prepared in advance, and a conveyor bolt is provided by using a fixing bolt 9 and a nut 10 which are projected from the hollow portion 3 through the groove 4. It was fixed at 1. The transport roller mounting member 8 is formed in a U-shaped cross section, and is fixed by nut tightening so as to close the groove 4 from the upper surfaces of the flanges 5a and 5b. According to this configuration, the transport roller attachment member 8 is integrally fixed to the inner side surfaces of the pair of conveyor frames 1, so that the transport roller 2 can be bridged as shown in the drawing by utilizing the recess 7.

On the other hand, in the second example shown in FIG. 6, the conveyor frame 1 has a simple plate shape, but bearings 11 are fixed to the side surfaces with screws 12 at desired intervals.
Since a vertically elongated recess 13 for fitting the roller shaft 6 is formed on the side surface of the bearing member 11, by fitting the roller shaft 2 into the recess 13, the conveying roller 2 is provided between the pair of conveyor frames 1. Can be bridged.

[0005]

However, in the conveyor frame 1 shown as the first example, in addition to the conveyor frame 1, members such as the conveying roller mounting member 8, the fixing bolt 9 and the nut 10 are required, This contributed to the high cost. Further, when fixing the conveying roller mounting member 8, the fixing bolt 9 is positioned in the hollow portion 4 such that the threaded portion of the fixing bolt 9 projects from the groove 4, and at the same time, it is inserted into the insertion hole formed in the conveying roller mounting member 8. Since the fixing bolt 9 must be inserted and then the nut must be tightened, the work of fixing the conveying roller mounting member 8 is troublesome and time-consuming, and the workability is not good. Further, in the conveyor frame 1 shown as the second example, the structure of the conveyor frame 1 itself is simple, but the bearing tool 11 and the screw 1 are provided as separate members.
2 is required. Then, when assembling, it is necessary to form a screw hole in the side surface of the conveyor frame 1 and to perform a work such as tightening a screw. It should be noted that one screw may be provided if, for example, a protrusion or a recess for locking is formed on the side surface of the conveyor frame 1 and a recess or a protrusion for locking the protrusion is formed on the bearing 11. However, since it is difficult to form a recess or a protrusion on the side surface of the conveyor frame 1 with a mold, unless a locking means or a positioning means is formed, a single screw rotates the bearing tool 11 during use. It is easy to cause inconvenience such as
You will need to tighten the screws on the book.

Regarding the bearing mechanism of the conveyor frame,
In addition to the above-mentioned conventional examples, Japanese Utility Model Publication No. 3-44741 and 5-
Various structures are disclosed in Japanese Laid-Open Patent Publication No. 2488 and Japanese Patent Laid-Open No. 5-24623. That is, actual fair 3-447
The roller conveyor disclosed in Japanese Patent Publication No. 41-41 has a fitting hole for fitting the roller shaft in the conveyor frame. However, the step of forming the fitting hole is required and A locking tool for restricting movement is required as a separate member. The roller conveyor disclosed in Japanese Utility Model Publication No. 5-2488 requires a pair of supports for supporting the roller shaft, and the structure of the supports is complicated. Further, the conveyor bearing disclosed in Japanese Patent Laid-Open No. 5-24623 requires not only a bearing body but also a mounting mechanism for the bearing body. As described above, the conventional conveyor frames and roller conveyors each have a large number of parts and have a complicated structure, which makes assembly time-consuming. An object of the present invention is to provide a conveyor frame that can easily perform positioning and fixing of a roller shaft of a conveyance roller without using a tool.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a conveyor frame that rotatably supports a conveyor roller and has an inwardly extending cross section in which a locking portion is formed in a longitudinal direction with a desired gap. A frame body, a flexibly deformable surface plate portion, a back plate portion that deforms in response to the deformation of the surface plate portion, and one end of the back plate portion that is inserted through the gap during the deformation and is engaged during restoration. The present invention is achieved by a conveyor frame comprising an engaging portion that engages with the stopper portion and a bearing member that has a fitting hole into which the roller shaft of the conveying roller is fitted. In the above structure, it is preferable that a shaft support portion is formed at an edge portion of the bearing member, and the fitting hole is formed by combining a plurality of shaft support portions of the bearing member.

[0008]

According to the conveyor frame of the present invention, the engaging portion formed on the back plate portion forming the bearing member is inserted through the gap formed in the frame body by the bending deformation of the back plate portion,
Since it engages with the locking portion formed on the frame body upon restoration, the work of attaching / detaching the bearing portion to / from the frame body is extremely simple. Since the bearing body has a fitting hole for fitting the roller shaft of the carrying roller, the fitting hole is formed by attaching the bearing member to the frame body, and the carrying roller is rotated. The conveyor frame for supporting freely can be easily assembled.

[0009]

EXAMPLES Examples of a conveyor frame to which the present invention is applied will be described in detail with reference to FIGS. 1 is a perspective view showing the structure of a conveyor frame, FIG. 2 is a cross-sectional view of a main part showing the structure of the conveyor frame, FIG. 3 is a side view showing the shape of a bearing member, and FIG. 4 shows the structure and attachment / detachment of the bearing member. FIG. The conveyor frame 21 is a frame main body 22 manufactured by an extrusion (or drawing) processing method in which an aluminum material and its alloy are passed through an extrusion mold (die) to produce a long product having an opening cross-sectional shape of the mold, the conveyor frame. The bearing member 23 is detachably attached to the side surface of the bearing 22. The conveyor frame 21 has a shape in which a pair of upper and lower projecting portions 24 and 25 are provided on a plate-shaped wall portion 21a at desired intervals, and the respective tips of the upper projecting portion 24 and the lower projecting portion 25 face each other. Locking portion 2 for locking a bearing member 23 described later.
4a and 25a.

On the other hand, the bearing member 23 is formed by integrally molding elastically deformable synthetic resin, metal, etc., and its planar shape is convex as shown in FIGS. As shown in FIG. 3, the bearing member 23 has a semicircular support at a position corresponding to a boundary between a short side portion 23a having a small lateral width W1 and a long side portion 23b having a large lateral width W2. Part 26
Are formed. Therefore, when the bearing members 23 are alternately arranged upside down, the short side portions 23a of the first bearing member 23 come into contact with the long side portions 23b of the adjacent second bearing member 23,
Each of the semi-circular shaft support portions 26 is fitted to each other, and FIG.
As shown in FIG. 5, circular fitting holes 27 are formed at predetermined intervals. As shown in FIGS. 1 and 2, the fitting hole 27 is provided with the roller shaft 3 of the transport roller 32 that constitutes the roller conveyor 31.
3, the fitting holes 27 are formed at predetermined intervals by alternately fixing the bearing members 23 to the side surface of the frame body 22. The illustrated fitting hole 2
7 has a circular shape as an example, and the fitting hole 27 has a shape corresponding to the cross-sectional shape of the roller shaft 33.

As shown in FIG. 2, the roller conveyor 31 is constructed by arranging the conveyor frames 21 having the above-described structure so as to face each other and fitting the roller shaft 33 of the conveying roller 32 into the fitting hole 27. Since the fitting holes 27 are continuously formed at a predetermined interval, the transport rollers 32 are bridged in a predetermined interval between the pair of conveyor frames 21, and the rotation of the transport rollers 32 causes the articles to be loaded. Can be transported. As described above, the conveyor frame 21 that constitutes the roller conveyor 31 is configured by fixing the bearing member 23 to the frame body 22, but it can be assembled very easily without using any screws or the like. ing.

The structure of the bearing member 23 will be described in more detail below. The short side portion 23a and the long side portion 23b of the bearing member 23 will be described below.
Has a two-sheet structure in which a front surface plate portion A and a rear surface plate portion B are combined as shown in FIG. Since the joint between the front surface plate portion A and the rear surface plate portion B has a bent shape, the front surface plate portion A and the rear surface plate portion B are thinly formed to the right of FIG. As shown in the figure, the shape is such that it is easily bent and deformed into an arc shape. The front surface plate portion A has a plate shape as a whole, but on the back surface of the rear surface plate portion B, engaging portions 28a and 28b having concave vertical cross sections which engage with the locking portions 24a and 25a are formed in a laterally long shape. Has been done. Therefore, as shown in the right side of FIG. 4, when the surface plate portion A is deformed into a bow shape, the engaging portions 28a, 28
b is also deformed toward each other so that the gap G formed between the upper overhanging portion 24 and the lower overhanging portion 25 can be inserted. Therefore, when the bearing member 23 is fixed to the frame body 22, the surface plate portion A is bent and deformed as shown in the right side of FIG. 4, the engaging portions 28a and 28b are inserted into the gap G, and then the deformation is released. To do. Since the front surface plate portion A and the rear surface plate portion B have an elastic restoring force, by releasing the deformation, the engaging portions 28a and 28b are engaged with the engaging portions 24a and 25a as shown on the left side of FIG. Is fixed so that it cannot be pulled out.

When the bearing member 23 once fixed is removed, the bearing member 23 is deformed as described above by inserting the tip of a driver into the fitting hole 27 and the engaging portions 28a and 28b are locked. It can be removed from the parts 24a and 25a and removed from the frame body 22. As described above, the conveyor frame 21 according to the present embodiment is extremely simple and quick to assemble by attaching the bearing member 23 of the roller shaft 33 constituting the conveying roller 32 to the frame main body 22 by a simple operation that can be said to be almost one-touch operation. You can Further, since the roller shaft 33 does not directly contact the frame body 22 in the conveyor frame 21 in the present embodiment, noise is less generated during the conveyance of the articles by the conveyance rollers 32, and the noise transmission is also less. The environment can be improved. In addition, the setting position of the fitting hole 27 can be changed by preparing various bearing members 23 having different lateral widths W1 of the short side portions 23a and various bearing members 23 having different widths W2 of the long side portions 23b. Yes,
The roller spacing can be adjusted.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, but various modifications can be made. For example, the fitting hole 27 may be formed as a vertically long fitting recess as shown by an imaginary line in FIG. 3, or may be fitted in the surface of the surface plate portion A without forming the shaft support portion 26 at the edge portion. A pore may be formed. Further, in order to facilitate the flexural deformation of the surface plate portion A, for example, a hinge portion may be formed at a position indicated by C in FIG.

[0015]

As described above, according to the conveyor frame of the present invention, a pair of locking portions are formed in the frame body with a desired gap therebetween and the roller shaft of the conveying roller is fitted into the frame body. In the bearing member with the fitting hole of
A pair of engaging portions that engage with the pair of engaging portions by being restored by being inserted through the gap by flexural deformation are provided. Therefore, when assembling the conveyor frame, the bearing member can be fixed to the frame body only by deforming the bearing member to engage the pair of engaging portions with the pair of engaging portions, and assembling the conveyor frame and by extension of the roller conveyor. Assembly can be done easily and quickly without the use of tools. Moreover, since the roller shaft of the conveying roller is supported by the bearing member, noise is not generated and the working environment can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a conveyor frame that is an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the structure of a roller conveyor.

FIG. 3 is a side view of a bearing member.

FIG. 4 is a cross-sectional view showing a structure of a bearing member and an attaching / detaching action.

FIG. 5 is a perspective view showing a first example of a conventional conveyor frame.

FIG. 6 is a perspective view showing a second example of a conventional conveyor frame.

[Explanation of symbols]

 21 Conveyor Frame 22 Frame Main Body 23 Bearing Member 24 Upper Overhanging Part 24a, 25a Locking Part 25 Lower Overhanging Part 26 Shaft Supporting Part 27 Fitting Hole 28a, 28b Engaging Part 31 Roller Conveyor 32 Conveying Roller 33 Roller Shaft A Table Face plate B Back plate

Claims (2)

[Claims] 1. A conveyor frame for rotatably supporting a conveying roller, wherein a locking portion (24) is provided over a longitudinal direction with a desired gap G.
a), a frame body (22) having an inwardly extending cross section forming (25a), a flexibly deformable surface plate portion A, and a back plate portion B that deforms in response to the deformation of the surface plate portion A. An engaging portion (2) which is one end of the back plate portion B and which is inserted through the gap G when deformed and which engages with the locking portions (24a) and (25a) when restored.
8a), (28b) and a bearing member (23) having a fitting hole (27) into which the roller shaft (33) of the carrying roller (32) is fitted, and a conveyor frame (21). ). 2. A shaft support portion (26) is formed at an edge portion of the bearing member (23), and the fitting holes (27) are formed by combining a plurality of shaft support portions (26) of the bearing member (23). Conveyor frame (21) according to claim 1, characterized in that it forms a.