JPH04140213A - Roller conveyor for curved path - Google Patents

Abstract

PURPOSE:To permit support side frames to be used commonly for various types of devices by disposing a tapered roller onto a curved main body via paired support frames while the small diameter section of the roller is positioned to the center side of a curve with a carrying surface made horizontal, providing a drive body down below one end in such a way as to be freely contact or out of contact therewith, and thereby providing a multi-step engaging section and a connecting fixture for the other end. CONSTITUTION:A tapered roller 31 is provided for the side frames 1A and 1B of a main body frame 1 which is formed into a curve, in such a way as to be loosely rotatable while support frames 10 and 20 are being supported. In this case, the axial center 32 of the roller is made to be horizontal, so that the roller is disposed while the small diameter side of the tapered roller 31 is positioned to the center of the curve. And a support shaft 41 along the roller shaft 32 is provided for the support frame 10 in such a way as to be freely rocked up and down while a driving unit 40 is disposed, so that it is thereby freely contact with or out of contact with the roller 31. Meanwhile, the support frame 20 is fitted onto the side frame 1B in such a way as to be freely changed vertically in position by the use of a locking groove 21, an oblong hole 22, a bolt 23, a nut 5B and a multi-step engaging section 24.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a roller conveyor for a curved route that supports and conveys packets containing loads or the load itself on a curved route.

BACKGROUND OF THE INVENTION Conventionally, as this type of roller conveyor, a structure as seen in, for example, Japanese Patent Application Laid-Open No. 12406/1983 has been provided. In this conventional structure, a plurality of tapered rollers are freely rotatably arranged on the curved frame side, and the roller shafts of these tapered rollers are fixed on the frame side. The roller axis is inclined horizontally. Furthermore, a collar is provided on the large diameter side of each tapered roller, and an endless belt with the working path side located outside the collar is hung from above between each tapered roller, and the return path side of the endless belt is placed downwardly on the drive wheel body of the motor. It's hanging from there.

According to this conventional type, the driving force of the motor is transmitted to the endless belt via the driving wheel body, and the movement of this endless belt rotates each tapered roller, thereby allowing the conveyed article to be conveyed along a curved path.

Problems to be Solved by the Invention According to the above-mentioned conventional type, the length of the tapered roller changes as the conveyor width (width) changes, and the diameter of the large diameter changes. The position of the roller shaft changes up and down in order to make the conveyance surface of the tapered roller horizontal. In this case, the roller shaft is fixed on the frame side, so the roller shaft support can be adjusted according to the various models. A frame with side frames must be prepared.

An object of the present invention is to provide a conveyor for a curved route, in which the side frame for supporting the tapered roller can be used for various types of conveyors, and the tapered roller can be firmly positioned up and down, front and back.

Means for Solving the Problems In order to achieve the above object, the present invention provides a roller conveyor for a curved path, in which a tapered roller is freely rotatable on the side of a curved main body frame through a pair of support frames that respectively support both ends. These tapered rollers have a small diameter on the curved center side and have a horizontal conveying surface, and are arranged with their roller axes inclined, and are connected to one support frame side, interlocked with a drive body, and connected to the tapered roller from below. A transmission unit that can be connected and separated is provided between the other support frame and the main frame side.
A plurality of engagement parts and a removable connector are provided in the vertical direction.

According to the configuration of the present invention, the main body frame and the tapered roller having the desired machine width are prepared, and the tapered roller is set on the main body frame side via both support frames. At that time, the other support frame is moved up and down so that the conveying surface of the taper roller is horizontal, and in the horizontal state, the engaging portions are engaged and fixed by the connector, so that the other support frame is The support frame can be fixed without shifting up and down.

By preparing a large number of base frames that determine the width of the machine, the main body frame can be used for various types of machines as side frames that support the tapered roller via the support frames.

Example An embodiment of the present invention will be described below based on the drawings.

As shown in FIGS. 5 and 6, a roller conveyor device 10
0 is a straight conveyor 102 that is located on the upper side and forms a straight path 101, and a curved conveyor 103 that is located on the lower side.
It consists of a curved conveyor 104 that forms a An inlet conveyor 106 forming a straight path 105 is disposed on the upstream side of the straight conveyor 102, and an outgoing conveyor Ifllll forming a straight path IG7 is disposed at the downstream side of the curved conveyor 104. Therefore, by using the 90 degree curve conveyor +04, the entire conveyance direction can be changed to 90 degrees. However, the conveyance direction can be changed arbitrarily by adopting curved conveyors 104 with different curve angles, for example, to 60 degrees, and by combining two conveyors of 90 degrees, a curved path spanning 180 degrees can be formed. can.

Next, details of the curve conveyor 104 will be explained with reference to FIGS. 1 to 7.

1 is a main body frame with a concave cross section, and a pair of left and right side frames IA
, IB, and a base frame IC that connects the lower portions of these side frames IA and IB via bolts and nuts 9, etc. Here is the side frame IA.

IB is curved over 90 degrees in plan view.

L-shaped guide portions 2A and 2B are formed on the opposing inner surfaces of the side frames LA and IB, and these guide portions 2A and 2B have horizontal mounting surfaces 3A and 3B and upright inclined mounting surfaces. 4
It consists of A and 4B. Here, the mounting surfaces 4A and 4B are inclined so that the upper side is on the inner side. Furthermore, both sides frame IA
, IB has a dovetail groove 6A on the top thereof, which allows the nut bodies 5A and 5B to slide.

6B is mounted so as to be open to the surfaces 4A and 4B. Further, in one of the side frames IA, a guide body 8 is disposed on the inner surface side of the intermediate portion through a mounting portion 7 in the length direction of the frame.

The one side frame IA is provided with a support frame 10 made of resin and supported and guided by the guide portion 2A.

This support frame 10 has a case shape, and the guide portion 2A
A board part 11 attached to the board part 11, and a pair of front and rear cover board parts 1 connected inward from the lower half inner surface of the board part 11.
2 and a connecting plate part I3 provided between the lower ends of these cover plate parts 12. Then, the lower end of the base plate part 11 is brought into contact (fitted) with the receiving surface 3A, and the outer surface 11a is brought into contact with the mounting surface 4A, and then the mounting formed in the intermediate part is inserted into the hole 14 from the inside. By the structure in which the passed bolt 15 is engaged with the nut body 5A, the support frame IO
can be freely changed in position (slidable) in the length direction of the frame, and is fixed at the changed position. Note that a roller support hole 16 is formed near the upper end of the substrate portion 11. 17A.

17B indicates a guide frame.

The other support frame 20 is provided on the other side frame IB so as to be able to change its vertical position. That is, the support frame 20 has a substrate shape, and its outer surface 20a can be freely attached to the mounting surface 4B, and a locking groove 21 that is open upwardly and inwardly is formed in the upper half of the inner surface. ing. Elongated holes 22 in the vertical direction are formed on both sides of the locking groove 21, and the support frame 20 is constructed so that bolts 23 passed through these elongated holes 22 from inside are engaged with the nut body 5B. The position of the frame can be changed in the longitudinal direction, and it can be raised and lowered, and is fixed at the changed position. The bolt 23 and nut body 5B described above constitute a detachable connector for fixing the support frame 20 to the side frame IB.

A plurality of engagement portions 24 are provided in the vertical direction between the side frame IB and the support frame 20. That is, for mounting on the side frame IB, grooves 25 extending over the entire length in the longitudinal direction are formed in multiple stages (rows) in the upper and lower parts in the lower half of the surface 4B, and from the lower end on the outer surface 20a of the support frame 20, A protrusion 26 that can be freely engaged with the groove 25 is integrally formed. Note that groove 2
5 is molded at the same time as the support frame 20 is molded, and both support frames 10 and 20 have a symmetrical shape.
A groove 25 is also formed in one of the support frames 10.

A tapered roller 31 is freely rotatably provided between the support frames 10 and 20 via a roller shaft 30. That is, the roller shaft 30 can be installed by inserting one end of the roller shaft 30, which has been inserted so as to be relatively rotatable, into the roller support hole 16 and dropping the other end into the locking groove 21 from above. The tapered roller 31 with the small diameter portion positioned can freely rotate around the roller axis 32.

A support shaft 41 along the roller axis 32 is attached to one of the support frames 10 so as to be vertically swingable. That is, the substrate part 1
A bearing hole 42 is formed in the lower part of the support shaft 41, and the inner end of the support shaft 41 is fitted into the bearing hole 42 so that it can freely swing up and down.

Then, a resin-made Japanese cedar plate part 43 is attached between the free ends of the cover plate part 12 by inserting it, and the outer end of the support shaft 41 is fitted into the vertical recess formed in the vertical plate of the L cedar plate part 43. In addition, the vertical swing range of this support shaft 41 is regulated. A sprocket 44, which is an example of a passive wheel, is attached to the support shaft 41.
is rotatably attached to the sprocket 44, and a transmission roller 45 is fitted onto the boss portion of the sprocket 44 so that both 44 and 45 can rotate together. The transmission roller 45 is made of urethane rubber, and its outer periphery is able to come into contact with and separate from the lower outer periphery of the tapered roller 31 . Then, an air cylinder device 46, which is an example of a movement imparting device that acts on the support shaft 41 to bring it into contact, connects the cylinder rubber receiver 47 attached to the outer end of the support shaft 41 and the horizontal plate of the L cedar board portion 43. It is interposed in between. Furthermore, a plate 49 is connected inwardly from the upper end of the vertical plate of the L cedar plate part 43 via a fixing device 48 such as a bolt, and this plate is connected to the lower surface of the plate 49 and the upper surface of the cylinder rubber receiver 47. A compression spring 50, which is an example of a biasing device that biases the support shaft 41 downward, is interposed between the two.

The above-mentioned transmission units 41 to 50 constitute one transmission unit 40, and a large number of transmission units 40 are disposed on the main body frame 1 as one set with the tapered roller 31 via the support frame 10, 20 or the like.

The straight conveyor 102 has the same configuration as the curve conveyor +04, and the major difference is that, as shown in FIG. 4, a straight roller 35 is used instead of the tapered roller 31, and a is installed on side 4A
is formed vertically, and a return guide body 36 is disposed below the upwardly directed guide body 8. Further, a rectangular plate-shaped support frame is attached to the other side frame IB so as to be perpendicular to the surface 4B. Note that the carry-in side conveyor 106 and the carry-out side conveyor 108 are also the straight conveyor 102.
It is configured in the same way as .

As shown in Figures 4 and 5, both conveyors are 102°10
4 is integrated by connecting the main body frames 1 and 1, and is connected to the floor 110 via a plurality of legs 109.
installed at a predetermined level above. In addition, both main body frames 1.
1 can also be integrated without being connected, for example by extruding aluminum and then bending the halves.

The driving unit used for both conveyors 102 and 104 is composed of a common driving body 51 which is connected to each sprocket 44, and a driving device 52 which is connected to the chain 51. That is, the cheno 51 is the straight conveyor 1
02 and a lower driven sprocket 54 provided at the lower end of the curved conveyor 104, and is supported and guided by the guide body 8 in the working path that meshes with the sprocket 44 group. be done. Further, in the return path (return path), the straight conveyor 102 is supported and guided by the guide body 36, and the curved conveyor 104 is supported and guided by the curved path 102.
It is supported and guided by a curved guide body 55 whose radius is smaller than that of 3.

As mentioned above, the tapered rollers 31 and the straight rollers 35 paired with the transmission unit 40 etc. are divided into groups A to G, with a plurality of rollers arranged in a predetermined arrangement as one group, as shown in FIG. 10, for example. are arranged and controlled for each group. Here, the group is the carry-in conveyor 106
is A and 81 straight conveyor 102 is 01 curve conveyor 1
04 is shown as D and E1 exit side conveyor 108 is shown as F and G, however, the incoming side conveyor 106 and the outgoing side conveyor 108 have a larger number of groups, and the curved conveyor 104 is changed to one group. It is possible. In each group A to G, the supply/discharge hose 70 connected to the air cylinder device 46 group can be selectively connected to and separated from the air supply hose 73 from the air supply device 72 via the solenoid valve 7. be. It should be noted that each of the groups A to G is provided with a photoelectric or other type inventory detector 74, respectively. 75
indicates a packet, which is an example of a transported object.

In the above embodiment, before arranging (assembling) the tapered rollers 31, the main body frame 1 is first assembled.

In other words, both side frames IA and IB are connected via bolt nuts 9, etc. above both ends of the base frame IC corresponding to the intended width of the machine.
are concatenated. Next, one support frame 10 having the transmission unit 40 is attached to one side frame IA, and the other support frame 20 is attached to the other side frame IB. That is, the support frame lO is
1 into the outer surface 11a.
To install it, place it against the surface 4A, and then tighten it by fitting the bolt 5 passed through the hole 14 with the nut body 5A.
It can be fixed to the side frame IA. At this time, the sprocket 44 meshes with the chino 51 supported by the guide body 8 from above. Furthermore, since the surface 4A of the transmission unit 40 is inclined during installation, the transmission unit 40 is inclined so that the free end side is at the lower side at the same time as the installation. Other support frame 2
0 can be fixed to the side frame IB by fitting and tightening the bolt 23 passed through the elongated hole 22 with the nut body 5B. At that time, the support frame 20 is attached to the surface 4B by engaging the protrusion 26 with the target groove 25, and is fixed via the bolt 25 to prevent vertical positional displacement. This will be blocked by the engaging portion 24.

After attaching both support frames 10 and 20 in this way, the roller shaft 3 is inserted through the tapered roller 31 of the desired length.
0, the end on the small diameter side is inserted into the roller support hole 16, and the other end is dropped into the locking groove 21 from above, thereby installing the tapered roller 31.

Next, adjustment is made to make the conveying surface 31a of the tapered roller 31 horizontal. In other words, the mounting described above is on surface 4.
When the support frame 20 is applied to B, if the engagement of the protruding strip 26 with the concave groove 25 is performed correctly, the locking groove 21 will be at a predetermined level and horizontality can be expected, but the engagement part 2
4, the conveying surface 31a may become inclined. In this case, first move the support frame 20 inward with the bolts 23 slightly loosened, and move the protrusion 20 from the groove 25.
Remove 6. Then, the bolts 23 may be tightened after the support frame 20 is moved up and down to engage the protrusions 26 with other grooves 25, thereby adjusting the conveyance surface 31a horizontally.

When carrying out the conveyance work, the re-chain 51 is first driven by the drive device 52. This chino 51 is supported and guided by the guide body 8 on the working path side and meshes with the lower part of each sprocket 44, and is supported and guided by the guide body 36 and the curved guide body 55 on the return path side.

1, 4, and 7, the solenoid valve 71 is switched to connect the air supply hose 73 to the supply/discharge hose 70 in all groups A to G, and the compression spring 50 is activated by the expansion of the air cylinder device 46. The support shaft 41 is swung upward against the pressing force, and all the transmission rollers 45 are connected to the corresponding taper roller 31.
Alternatively, it is pressed against the straight roller 35 from below. At this time, the chino 51 is constantly being driven by the driving device 52, and therefore all the sprockets 44 engaged with the chino 51 are rotating around the support shaft 41. Furthermore, the transmission roller 45 is in contact with the lower part of the outer periphery of the tapered roller 31 and the straight roller 35, so that these rollers 31.3
The packet 75 is forcibly rotated on the path 105° 101, 103, 107 with the entire length as the driving area.
can be transported.

For example, as shown in groups E and F in FIG. to swing the support shaft 41 downward, and
As shown by the imaginary line M in the figure, the transmission roller 45 is separated from the tapered roller 31 and the straight roller 35, and these rollers 3
The 5.45 group is not driven. For example, when the packets 75 are in the storage state up to group E as shown in FIG. It is detected by the inventory detector 74. When this detection signal and the detection signal from group E are input, the solenoid valve 71 of group D is automatically switched to separate the transmission roller 45 as described above, thereby moving the packet 75 along the virtual line ( The packet 75 in front as shown in b)
It can be stopped without colliding with the vehicle.

For example, when the packet 75 of group E is carried out, the detection signal from the presence detector 74 of group E disappears, so the solenoid valve 71 of group D is automatically switched to the drive side, and the packet 75 will be transported to Group E.

When the transmission rollers 45 are separated to stop the packet 75 that has been conveyed as described above, that is, immediately after shifting from the drive mode to the non-drive mode, the stopping positions are uneven due to the rollers 31 and 35 trying to rotate by inertia. However, this can be prevented by incorporating a brake roller or a stopper device, for example.

Effects of the Invention According to the present invention having the above configuration, a main body frame and a taper roller of a desired machine width are prepared, and when the tapered roller is set on the main body frame via both support frames, the conveying surface of the tapered roller is The other support frame can be moved up and down so that it is horizontal, and by engaging the engaging parts and fixing it with the connector in the horizontal state, the other support frame can be moved up and down. It can be fixed without shifting. As a result, the main body frame can be used for many types of machines by simply preparing a large number of base frames that determine the width of the machine, and the side frames that support the tapered roller via the support frames can be used for many different models.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a vertical cross-sectional rear view of a curved conveyor section, FIG. 2 is a vertical cross-sectional rear view of the other supporting frame section, FIG. 3 is an external view of the same, and FIG. 4 is a vertical cross-sectional rear view of the curve conveyor section. FIG. 5 is a schematic plan view of the whole, FIG. 6 is a schematic side view of the same, and FIGS. 7 and 8 are schematic side views showing the operating state. 1...Body frame, IA, IB...Side frame, 2A. 2B...Guide part, 5A, 5B...Nut body, 10
...Support frame, 11...Base part, 16...Roller support hole, 20...Support frame, 21...Latching groove, 23...
・Bolt, 24... Engaging portion, 25... Concave groove, 26.
...Convex strip, 30...Roller shaft, 31...Taper roller, 31a...Conveyance surface, 32...Roller axis, 35
...Straight roller, 40...Transmission unit, 41.
... Support shaft, 44 ... Sprocket (passive wheel), 45
...Transmission roller, 46...Air cylinder device (movement imparting device), 51...Cheno (driver), 52...
Drive device, 7I... Solenoid valve, 74... Stock presence detector,
100... Roller conveyor device, 102... Straight conveyor, 104... Curve conveyor, A-G... Group.

Claims (1)

[Claims] 1. A tapered roller is freely rotatably disposed on the curved body frame side via a pair of support frames that support both ends, and these tapered rollers have a small diameter on the curved center side and a horizontal conveying surface. The roller axis is arranged at an angle, and a transmission unit is provided on one support frame side, which is linked to the drive body and can be connected to and separated from the tapered roller from below.
1. A roller conveyor for a curved path, characterized in that a plurality of engagement parts in the vertical direction and a removable connector are provided between the other support frame and the main frame side.