JP2003095417A - Roller conveyor apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller conveyor apparatus making it possible to miniaturize a frame and increase degrees of freedom of design, while facilitating wiring and arrangement. SOLUTION: A plurality of cross members 11 which can store a drive unit B and the like are horizontally extended between frames 2 and 2 located immediately below a roller 3, and a wiring duct 25 enabling a cable 31 connected to the drive unit B or the like to pass through and out of it is provided along the direction of conveyance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller conveyor device having a predetermined length, which enables easy handling of electric wiring connected to electric equipment.

[0002]

2. Description of the Related Art Recently, it is possible to easily change the layout and the installation location of individual roller conveyors used in a plurality of connected production lines and baggage collection centers in a factory, and to easily perform wiring and maintenance. For the reason that it is possible to do so, there is a tendency to change to the individual control method instead of the centralized control method used so far.

As a conventional roller conveyor device of such an individual control system, for example, JP-A-7-315544, JP-A-10-279047, and JP-A-1 can be used.
Some are disclosed in Japanese Patent Publication No. 0-199030.

[0004]

In any of the above-described conventional roller conveyor devices, unitized control equipment, cables for power supply, signals, etc. are housed in a space formed on the side surface of the frame facing the longitudinal direction. I am doing and wiring.

For this reason, the size and shape of the frame are restricted or enlarged, and it is difficult to downsize the entire roller conveyor device.

[0006] Further, if the left and right frames are made common, one frame not accommodating the control equipment or the like becomes large, resulting in waste of material cost and high cost.

The present invention has been made in order to solve the above problems, and it is possible to reduce the size of the frame and increase the degree of freedom in design by changing the housing position of the control device and the wiring form of the cable. It is an object of the present invention to provide a roller conveyor device which can be easily wired and easily routed.

[0008]

In order to achieve the above object, the roller conveyor device of the present invention is a roller in which a large number of rollers are arranged in parallel between a pair of frames facing each other in parallel with each other. In the conveyor device, a plurality of cross members each having a space capable of accommodating an electric device are laterally provided between both frames immediately below the rollers, and the electric devices are provided above the respective cross members. It is characterized in that a wiring duct of a required length that can be led out to the outside through the connected cable is provided in the conveying direction. According to the present invention having the above-described configuration, the control device and the like can be accommodated in the space of one cross member, and the power cable and the like connected thereto can be inserted into the wiring duct at the shortest distance. The sheath shape can be freely selected, and the frame can be downsized.

In the above roller conveyor device, it is preferable that each gross member is provided with a concave cutout groove arranged in the conveying direction, and a wiring duct is fitted in each cutout groove. With this configuration, lateral movement of the wiring duct can be easily prevented and positioning is facilitated without using a fixing bracket or the like.

In the above roller conveyor device, it is preferable that a fixing piece that overlaps with a vertical surface of a suitable cross member is vertically provided at an appropriate position of the wiring duct, and the fixing piece and the vertical surface are fixed by a fixing means. This prevents the wiring duct from rattling or falling during transportation or use.

In the above roller conveyor device, it is preferable to provide an opening on one side surface of the wiring duct, the opening being open along the carrying direction. In this way, the wiring of the power cable or the like and the handling work can be easily performed.

In the above roller conveyor device, it is preferable to form a plurality of through holes on the other side surface of the wiring duct at predetermined intervals in the carrying direction. In this way, it is possible to fix a plurality of positions of the cable inserted in the wiring duct by a string or a clip which is passed through the through hole, so that the cable is prevented from being moved and damaged, or protruding and hanging down. be able to.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a roller conveyor device according to the present invention, and FIG. 2 is a side view thereof. The roller conveyor device 1 includes a pair of left and right frames 2 and 2 which are parallel to each other. A large number of rollers 3 are pivotally supported at predetermined intervals.

Both the front and rear ends of both frames 2 and the lower surface of the intermediate part are supported by a plurality of pedestals 4.

As shown in detail in FIG. 3, each frame 2 is formed into a substantially cylindrical shape by, for example, drawing an aluminum alloy or the like. The groove 5 is formed over the entire length in the longitudinal direction. The lower surface of each frame 2 is a flat support surface 6.

An elastically deformable roller support member 7 made of synthetic resin having an approximately fan-shaped cross section whose outer shape has the same curvature as that of the frame 2 is fitted in the fitting groove 5.

A plurality of recessed holes 9 each having a stepped hole inside are formed at the same positions of the support surfaces 6 of the left and right frames 2 and are recessed toward the ribs 8 in the frame 2.

The support shafts 3a at both ends of each roller 3 are fitted into the notch grooves 10 formed in the roller support member 7 from above.

As shown in FIG. 4, at a plurality of important points between the left and right frames 2, a box-shaped cross member 11 having a narrow width with an upper opening, and a wide box provided at an intermediate portion are provided. -Shaped cross member 12, and mounting flange portions 13 formed on upper portions of both left and right ends of the cross member 12 are fixed by screwing bolts 14 into recessed holes 9 formed in the supporting surfaces 6 on the lower surfaces of both frames 2. Is provided directly below the roller 3 (see FIG. 3).
reference).

In FIG. 1, an operation unit A for turning on / off the roller conveyor device 1 is provided on the cross member 11 arranged at the rear end (the left end in the figure) in the conveying direction, and the other cross members 11 are provided with one operation unit A. Drive units B for driving the rollers 3 of the respective parts are housed respectively, and the wide cross member 12 in the middle part houses the control unit C.

As shown in FIG. 3, the drive unit B is constructed by integrally incorporating a small motor 16 into a drive roller 15 which can be housed in the cross member 11, and one end of the drive roller 15 is formed. Are rotatably supported by a support shaft 18a that is non-rotatably inserted through a support plate 17 fixed in the cross member 11.

The other end of the drive roller 15 has a support shaft 18b fitted with a rotary shaft 16a of the motor 16,
It is supported so as to rotate about the support shaft 18b by being inserted into the support plate 19 fixed to the side end portion in the cross member 11 so as not to rotate.

A pulley 21 having two annular grooves 20a and 20b is formed on the side end surface of the drive roller 15 on the support shaft 18b side.
Is stuck.

When the motor 16 is operated, its rotating shaft 1
The motor body and the driving roller 15 are integrally rotated with 6a as a fixed shaft.

The two belts 22 and 22 wound around the respective annular grooves 20a and 20b of the pulley 21 are respectively attached to the pulleys 23 at one end of the two rollers 3 which are adjacent to each other immediately below each drive unit B. It is wound so that two rollers 3 are driven simultaneously.

As shown in FIG. 4, each cross member 11,
At the left end (upper end in FIG. 1) of the upward-facing pieces 11a and 12a of the front and rear 12 of FIG. 12, concave cutout grooves 24 are formed side by side in the transport direction. A wiring duct 25 having a length substantially the same as the length is fitted from above in the front-back direction (see FIG. 3).

The wiring duct 25 is in the shape of a rectangular tube whose front and rear ends are open, and an opening 26 having a predetermined width is formed along the longitudinal direction at the upper end of the inner side plate 25a. Further, the outer side surface plate 25b has a plurality of through holes 2
7 are formed in the longitudinal direction at a predetermined pitch.

Fixing pieces 28 having an inverted L shape in a side view are fixed to both front and rear ends (one is not shown) of the lower surface of the wiring duct 25, and downward pieces 28a thereof are arranged at the front and rear ends. The cross member 11 is inserted from the inside of the outer cutout 24, and in a state where it is superposed on the lower portion of the inner surface of the upward piece 11a, it is inserted into the attachment hole 29 formed in the downward piece 28a and the upward piece 11a. By inserting the fastener pin 30, the wiring duct 25
Are fixed immovably immediately below each roller 3 (see FIG. 3).

As described above, when the wiring duct 25 is provided immediately below each roller 3 and is oriented in the front-rear direction orthogonal to the cross members 11 and 12, as shown in FIG.
The power supply cable 31 of the motor 15 housed therein, the power supply or signal cable of the operation unit A, the power supply or signal cable of the control unit C housed in the middle cross member 12, etc. are prevented from sagging and the wiring duct 25 is provided. It can be inserted and wired in the shortest distance.

Further, the power supply and signal cables 32 led out from the front and rear opening ends of the wiring duct 25 can be easily interlocked by connecting to another roller conveyor device.

Further, unlike the conventional case, it is not necessary to accommodate the control unit, the power cable and the like in the left and right frames 2, so that the size and shape of the frame 2 are not restricted, and the frame 2 can be downsized. In addition to being able to achieve this, the left and right frames 2 can be shared.

The present invention is not limited to the above-mentioned embodiment, but can take various embodiments.

In the above embodiment, the wiring duct 25 is provided at the left end of each cross member 11, 12, but it may be provided at the center or the left end. Further, the opening 26 may be provided on the side plate opposite to the above.

The wiring duct 25 is connected to each cross member 11,
Although it fits in the notch groove 24 of 12 to prevent the movement in the left-right direction, without providing such notch groove 24, for example, a plurality of brackets are attached downward on the lower surface of the wiring duct 25, Use screws or other appropriate cross members 11,
You may make it fix to the upward pieces 11a and 12a of 12.

The opening 26 of the wiring duct 25 may not be formed over the entire length, but a plurality of openings 26 may be provided at appropriate places.

[0037]

According to the present invention, the following effects can be obtained.

(A) According to the invention described in claim 1, since the degree of freedom in designing the frame is increased and the frame can be downsized, the conveyor device can also be downsized. Further, a cable of an electric device or the like housed in a part of the cross member can be inserted into the wiring duct at the shortest distance and wired.

(B) According to the second aspect of the invention, the lateral movement of the wiring duct can be easily prevented, and
The positioning becomes easy.

(C) According to the third aspect of the invention, the wiring duct is prevented from rattling or dropping during transportation or use.

(D) According to the invention described in claim 4, the wiring of the power cable or the like connected to the electric device and the routing work can be easily performed.

(E) According to the fifth aspect of the invention, the cable inserted in the wiring duct can be fixed at a plurality of points by a string, a clip or the like passed through the through hole, so that the cable is moved and damaged. There is no fear of dripping or sticking out.

[Brief description of drawings]

FIG. 1 is a plan view of a conveyor device of the present invention.

FIG. 2 is likewise a side view.

3 is an enlarged vertical sectional front view taken along line III-III of FIG.

FIG. 4 is likewise an exploded perspective view of a cross member and a wiring duct.

[Explanation of symbols] 1 Roller conveyor device 2 frames 3 roller 3a spindle 4 pedestals 5 Mating groove 6 Support surface 7 Roller support member 8 ribs 9 recess 10 Notch groove 11,12 Cross member 11a, 12a upward piece 13 Mounting flange 14 Volts 15 Drive roller 16 motor 16a rotating shaft 17 Support plate 18a, 18b support shaft 19 Support plate 20a, 20b annular groove 21 pulley 22 belt 23 pulley 24 Notch groove 25 wiring duct 25a, 25b Side plate 26 opening 27 through holes 28 Fixed piece 28a downward piece 29 mounting holes 30 Fastener Pins 31 power cable 32 signal cable A operation unit B drive unit C control unit

Claims (5)

[Claims] 1. A roller conveyor device comprising a plurality of rollers arranged in parallel between a pair of frames facing each other in parallel and spaced apart from each other. At least one electric device is provided between both frames directly under the rollers. A plurality of cross members having a space portion capable of accommodating the above, and a wiring duct of a required length that can be led out to the outside by inserting a cable connected to the electric device above the cross members. A roller conveyor device characterized by being installed in the conveying direction. 2. The roller conveyor device according to claim 1, wherein each of the gross members is provided with a concave cutout lined in the conveying direction, and a wiring duct is fitted in each cutout groove. 3. The roller according to claim 1, wherein a fixing piece that overlaps with a vertical surface of an appropriate cross member is vertically provided at an appropriate position of the wiring duct, and the fixing piece and the vertical surface are fixed by a fixing means. Conveyor equipment. 4. The roller conveyor device according to claim 1, further comprising an opening provided on one side surface of the wiring duct, the opening being opened along the conveyance direction. 5. The roller conveyor device according to claim 1, wherein a plurality of through holes are formed on the other side surface of the wiring duct at predetermined intervals in the transport direction.