JP4896308B2 - Conveyor device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a conveyor device used in a production line for assembling large products such as building units.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a production line for assembling a large product by assembling a wide variety of parts to a housing of a unit, such as a building unit, has a plurality of conveyor devices for each process as described in Japanese Patent Application Laid-Open No. 8-319020. It is conveyed by the tact feed (conveyor conveyance speed is constant speed) from the upstream to the downstream.
[0003]
[Problems to be solved by the invention]
However, in the production line as described above, there are many cases where the loads (assembly man-hours, etc.) for each building unit are different.
When a high-load unit is inserted on the upstream side, the upstream conveyor device may need to be temporarily stopped. In such a case, in the transport conveyor apparatus on the downstream side that is tact-fed, there is a gap between the building unit transported first and the building unit transported after the temporary stop, and waiting for the operator occurs. There is a problem.
Moreover, when the space | interval between the building units currently conveyed is vacant, a unit space | interval cannot be shortened if the conveyance speed of a conveyance conveyor apparatus is a constant speed.
[0004]
The present invention has been made in view of such problems, and an object of the present invention is to provide a conveyor device that can increase or decrease the conveying speed at an appropriate position in the conveying direction. is there.
[0005]
[Means for Solving the Problems]
The invention according to claim 1 includes a continuous belt-like conveyor main body and main driving means for rotating the conveyor main body, and the object to be conveyed placed on the horizontal upper surface of the conveyor main body from one side to the other side. In the transport conveyor device that transports toward the transport body, a large number of rotatable rollers that are attached over the entire circumference of the conveyor body so as to be able to support the object to be transported and circulate together with the conveyor body, and a horizontal upper surface of the conveyor body and a lifting means or by lowering or to more protrude, it becomes provided with a secondary drive means for rotationally driving the roller in the direction opposite to the conveying direction in the roller, said auxiliary driving means, below the roller provided, and the secondary drive chain meshing with the roller sprocket integrally provided on both sides of the roller body constituting the roller, the sub driving Choi Down the and a sprocket for auxiliary drive chain to rotate driven in a predetermined direction, the sub sprocket drive chain, the rotational drive in the sub-motor is provided by inserting the main shaft of the main drive means for orbiting said conveyor body It is characterized by being attached to the outer periphery of the tubular shaft.
Invention of Claim 2 is the conveyance conveyor apparatus of Claim 1, (1) A conveyor main body is formed with the slat conveyor which connected many slat bars with the main drive chain, (2) Main drive means, It has a sprocket for main drive chain that is attached to the main shaft that is driven to rotate by an electric motor. (3) The roller has roller sprockets integrated on both sides of the roller body so that it can move up and down on the slat bar. And (4) the elevating means includes an elevating rail provided below the auxiliary drive chain located on the conveying side, and a fluid pressure cylinder for elevating the elevating rail. It is characterized by.
[0006]
According to a third aspect of the invention, in the conveyor apparatus according to claim 1, wherein the lifting means, it you wherein is provided from one side of the conveyor body part of the conveying range of the other side.
[0007]
According to a fourth aspect of the present invention, in the conveyance conveyor apparatus according to the first aspect, the elevating means is divided into a plurality along the conveying direction and can be moved up and down independently. And
[0009]
(Function)
The conveyance conveyor apparatus of Claim 1 and 2 is provided with many rotatable rollers which circulate with a conveyor main body, and the raising / lowering means which makes this roller protrude from a horizontal upper surface of a conveyor main body, or descend | falls it. .
(1) In a state where the roller is lowered, the object to be conveyed placed on the conveyor body is conveyed from one side to the other side at a constant speed.
(2) When the roller is projected from the horizontal upper surface of the conveyor body, a rotatable roller that circulates together with the conveyor body rotates in the transport direction, and the transport speed by the rotation of this roller is added to the transport speed of the conveyor body. The conveyed object can be conveyed at almost double speed, and the conveying speed can be increased. At this time, means for forcibly rotating the roller in the transport direction may be provided. As a result, the object to be conveyed can be conveyed at an appropriate speed.
(3) Moreover, the said roller is provided with the sub drive means which rotationally drives this roller to the reverse direction to a conveyance direction. Therefore, when the roller is protruded from the horizontal upper surface of the conveyor body and the roller is driven to rotate in the direction opposite to the conveying direction by the sub driving means, the conveyed object has a force to convey in the direction opposite to the conveying direction of the conveyor body. It acts, canceling the conveying speed of the conveyor body, and delaying the conveying speed to zero or low speed.
(4) Since the auxiliary drive means has an auxiliary drive chain that is provided below the roller and meshes with the roller sprocket, the roller can be rotated reliably in a predetermined direction without rotational rotation of the roller. For this reason, the conveyance speed of a conveyance conveyor apparatus can be accelerated or delayed uniformly.
[0010]
According to the conveyance conveyor apparatus of Claim 3 , since the said raising / lowering means is further provided in a part of conveyance range of the other side from the conveyor main body, it conveys in a part of conveyance range of a conveyor main body. You can speed up or slow down. Therefore, when there is a gap between the objects to be transported, the transport speed can be increased and the distance can be shortened. Also, when a high load and a low load are transported together, The conveyance speed of the part into which the article is thrown can be partially delayed and conveyed.
[0011]
According to the transport conveyor apparatus of claim 4 , the lifting means is further divided into a plurality in the transport direction and can be lifted and lowered independently. The conveyance speed can be increased or decreased depending on the position. Therefore, it is possible to reduce the interval by increasing the conveyance speed at the downstream position where the interval between the objects to be conveyed is increased, and when a high load and a low load object are mixed and loaded, The conveyance speed at the position where the object is loaded can be partially delayed and conveyed.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a conveyor device according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is an elevation view schematically showing the entire conveyor transport apparatus.
FIG. 2 is a plan view showing a part of the conveyor conveyance device of FIG. 1 in detail.
FIG. 3 is an elevation view showing in detail a portion of the conveyor transport apparatus of FIG.
FIG. 4 is a perspective view of the slat bar.
5A is a plan view of another slat bar, FIG. 5B is a sectional view taken along line XX of FIG. 5A, and FIG. 5C is a YY line of FIG. 5B. FIG.
6 (a), 6 (b), and 6 (c) are cross-sectional views of main parts of the conveyor body taken along lines AA, BB, and CC, respectively, in FIG.
FIG. 7 is a cross-sectional view of an essential part taken along line XX of FIG.
FIG. 8 is a drive system cross-sectional view of the conveyor transport apparatus of FIG.
FIG. 9 is an explanatory diagram illustrating a usage state of the conveyor conveyance device.
FIG. 10 is an explanatory view showing another usage state of the conveyor conveyance device.
[0014]
Conveyor apparatus 1 of the present embodiment, as shown in FIG. 1, a strip of the conveyor body 2 to continue communicating, mainly consists driving means 3 for thereby circulating the conveyor body 2, horizontal upper surface of the conveyor body 2 The to-be-conveyed object U mounted in 1 is conveyed toward the other side from one side. The transported object U is a building unit that constitutes a unit building, and various parts can be assembled to the housing of the unit during transport.
[0015]
As shown in FIGS. 2 and 3, in the transport conveyor device 1, a large number of rotatable rollers that are attached over the entire circumference of the conveyor body 2 so as to support the transported object U and circulate together with the conveyor body 2. 4 and 4, and an elevating means 6 for projecting or lowering the roller 4 from the horizontal upper surface of the conveyor body 2.
The roller 4 is provided with sub-driving means 5 that rotationally drives the roller 4 in the transport direction or the reverse direction.
[0016]
The lifting / lowering means 6 is provided in a part of the conveying range from one side of the conveyor body 2 to the other side, for example, upstream or downstream of the conveyor body 2.
Or the said raising / lowering means 6 is divided | segmented into plurality with respect to the longitudinal direction of the conveyance direction R, and each may be provided so that raising / lowering was possible independently.
[0017]
The said conveyor device 1 is comprised as the following detailed description.
(1) Conveyor body 2
The conveyor body 2 is formed of a slat conveyor in which a large number of slat bars 21 and 22 are alternately connected by a main drive chain 37, as shown in FIG.
As shown in FIG. 4, the slat bar 22 includes a long plate member 221 bent into a U-shaped cross section, end support members 222 attached to both end openings of the plate member 221, and a central opening of the plate member 221. And an intermediate support member 223 attached to the head.
As shown in FIG. 5, the slat bar 21 essentially includes the roller 4 built in the slat bar 22, and includes a plate material 211 bent into a U-shaped cross section, and openings at both ends of the plate material 211. And an intermediate support member 213 attached to the central opening of the plate member 211.
An opening 214 is formed on the upper surface of the plate material 211, a long hole 215 is formed in the end support member 212 and the intermediate support member 213 in the vertical direction, and the shafts 43 at both ends of the roller 4 are connected to the long hole 215. The roller 4 is attached and supported so that the roller 4 can protrude from the upper surface of the slat bar 21.
[0018]
(2) Main drive means 3
As shown in FIG. 8, the main drive means 3 for circulating the conveyor body 2 includes a first main shaft 34A, a second main shaft 34B, and the first main shaft 34A and the second main shaft, which are opposed to each other with a space therebetween. 34B has a pair of sprockets 36, 36 for the main drive chain 37 that are pivotally attached to both ends of the shaft 34B.
When the main drive chain 37 is wound between the opposed sprockets 36 and 36 and the first main shaft 34A is rotationally driven, the conveyor main body 2 attached to the main drive chain 37 is rotationally driven.
The rotational drive of the first main shaft 34A is transmitted by being wound around the drive chain 33 between the sprocket 32 attached to the rotary shaft of the electric motor 31 and the sprocket 35 attached to the end of the first main shaft 34A. The
Further, as shown in FIG. 7, the conveyor body 2 connected by the main drive chain 37 is supported by placing the main drive chain 37 slidably on a rail 38 on which the gantry 7 is provided.
[0019]
(3) Roller 4
As shown in FIG. 5 or 7, the roller 4 is configured by integrally providing roller sprockets 42 and 42 on both sides of the roller body 41, and as described above, is movable up and down with respect to the slat bar 21. In addition, it is rotatably supported and mounted.
[0020]
(4) Sub drive means 5
The sub driving means 5 that rotationally drives the roller 4 in the conveying direction or in the reverse direction is provided below the roller 4 and is configured to rotate the sub driving chain 56 in a predetermined direction. The sub driving chain 56 meshes with the sprocket 42 for rollers. And a sub-drive chain sprocket 54.
The sub-drive chain sprocket 54 is attached to the outer periphery of a tubular shaft 55 that is provided through the first main shaft 34A (or the second main shaft 34B) and is rotationally driven by the sub-motor 51.
The sub-drive chain 56 is a double chain, one of which meshes with the roller sprocket 42 and the other meshes with the sub-drive chain sprocket 54.
The sub-drive chain sprocket 54 is driven by winding the drive chain 53 between the sprocket 52 attached to the drive shaft of the sub-motor 51.
[0021]
(5) Lifting means 6
As shown in FIG. 7, the lifting / lowering means 6 of the roller 4 includes a lifting rail 61 provided below the auxiliary drive chain 56 located on the transport side, and a fluid pressure cylinder 62 that lifts and lowers the lifting rail 61. Yes.
The length dimension of the elevating rail 61 in the longitudinal direction (conveying direction) is set to the minimum dimension of the conveyed object U.
[0022]
Next, the operation of the present embodiment will be described while describing a transport method using the transport conveyor apparatus 1 configured as described above with reference to FIGS. 9 and 10.
The transport conveyor apparatus 1 according to the present embodiment includes a large number of freely rotatable rollers 4 that circulate together with the conveyor main body 2, and lifting / lowering means 6 that causes the rollers 4 to protrude or descend from the horizontal upper surface of the conveyor main body 2. I have.
(1) In the state where the roller 4 is lowered, the object U placed on the conveyor body 2 is conveyed from one side to the other side at a constant speed.
(2) As shown in FIG. 9, when the roller 4 is protruded from the horizontal upper surface of the conveyor body 2, the rotatable roller 4 that circulates together with the conveyor body 2 rotates in the transport direction, and this roller 4 rotates. Is added to the conveying speed of the conveyor main body 2, the conveyed object U can be conveyed at almost double speed, and the conveying speed can be increased.
At this time, the sub drive chain 5 may be driven in the direction opposite to the transport direction by the sub drive means 5 to forcibly rotate the roller 4 in the transport direction. Then, the transported object U can be transported at an appropriate speed.
(3) Further, the roller 4 is provided with sub-driving means 5 that rotationally drives the roller 4 in the direction opposite to the transport direction.
Therefore, as shown in FIG. 10, the roller 4 is protruded from the horizontal upper surface of the conveyor body 2, and the auxiliary driving means 56 is driven in the same direction as the conveying direction by the auxiliary driving means 5, so that the roller 4 is opposite to the conveying direction. When rotating in the direction, the force to be conveyed in the direction opposite to the conveying direction of the conveyor body 2 acts on the conveyed object U, canceling the conveying speed of the conveyor body 2, and delaying the conveying speed to zero or low speed. Can do.
[0023]
As described above, according to the transport conveyor device 1, the transport speed can be increased or delayed. Therefore, when the space between the objects to be transported U is large, the transport speed can be increased to narrow the interval.
In addition, when a high load and a low load object U are input in a mixed manner, the transfer speed of the part where the high load object U is input can be partially delayed.
[0024]
Further, since the auxiliary drive means 5 has an auxiliary drive chain 56 that is provided below the roller 4 and meshes with the roller sprocket 42, the roller 4 is prevented from rotating and slipping and the roller 4 is reliably rotated in a predetermined direction. Can be made. For this reason, the conveyance speed of the conveyance conveyor apparatus 1 can be accelerated or delayed uniformly.
[0025]
【Effect of the invention】
According to the transport conveyor apparatus of the present invention, the following effects can be obtained.
1) Since the transport speed can be increased or decreased on the conveyor body, it is possible to eliminate the entire stoppage of the transport device due to the load fluctuation of the object to be transported.
2) Further, the waiting time of the downstream operator due to the delay on the upstream side of the transfer device can be minimized.
[Brief description of the drawings]
FIG. 1 is an elevation view schematically showing the entire conveyor transport apparatus.
FIG. 2 is a plan view showing a part of the conveyor conveyance device of FIG. 1 in detail.
FIG. 3 is an elevational view showing a part of the conveyor transport apparatus of FIG. 1 in detail.
FIG. 4 is a perspective view of a slat bar.
5A is a plan view of another slat bar, FIG. 5B is a cross-sectional view taken along line XX in FIG. 5A, and FIG. 5C is a cross-sectional view taken along YY in FIG. It is sectional drawing in a line.
6 (a), (b), and (c) are cross-sectional views of main parts of the conveyor main body taken along lines AA, BB, and CC, respectively, in FIG.
7 is a cross-sectional view of main parts taken along the line XX of FIG. 3. FIG.
8 is a cross-sectional view of a drive system of the conveyor transport apparatus of FIG.
FIG. 9 is an explanatory diagram showing a usage state of the conveyor conveyance device.
FIG. 10 is an explanatory view showing another usage state of the conveyor conveyance device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Conveyor apparatus 2 Conveyor main body 3 Main drive means 4 Roller 5 Sub drive means 6 Lifting means U Conveyed object

Claims (4)

In a conveyor system that includes a continuous belt-shaped conveyor body and main driving means for circulating the conveyor body, and transports a transported object placed on the horizontal upper surface of the conveyor body from one side to the other. ,
A large number of rotatable rollers that are attached over the entire circumference of the conveyor main body so as to support the object to be conveyed and rotate around the conveyor main body, and ascending / descending the rollers from the horizontal upper surface of the conveyor main body. Means, and the roller is provided with sub-driving means for rotationally driving the roller in the direction opposite to the conveying direction,
It said auxiliary driving means is provided under the rollers, and the secondary drive chain meshing with the roller sprocket integrally provided on both sides of the roller body constituting the roller, rotating the sub drive chain in a predetermined direction A sprocket for a secondary drive chain to be driven, and the sprocket for the secondary drive chain is provided on the outer periphery of a tubular shaft provided by being inserted through the main shaft of the main drive means for rotating the conveyor body and driven to rotate by the secondary motor. A conveying conveyor device characterized by being worn. (1) The conveyor body is formed by a slat conveyor in which a large number of slat bars are connected by a main drive chain.
(2) The main drive means has a sprocket for a main drive chain attached to a main shaft that is rotationally driven by an electric motor.
(3) The roller is integrally provided with roller sprockets on both sides of the roller body, and is mounted on and supported by the slat bar so that it can move up and down and rotate.
(4) The conveyance according to claim 1, wherein the elevating means includes an elevating rail provided below the auxiliary drive chain located on the conveying side, and a fluid pressure cylinder for elevating the elevating rail. Conveyor device.   The transport conveyor apparatus according to claim 1, wherein the elevating means is provided in a part of a transport range from one side of the conveyor body to the other side.   2. The conveyor apparatus according to claim 1, wherein the elevating means is divided into a plurality of parts along the conveying direction and can be moved up and down independently.

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