JPH03259805A - Roller conveyor - Google Patents

Abstract

PURPOSE:To reduce the size and weight and facilitate the attachment and removal of a roller, in a pallet carrying roller conveyor, by providing a idle roller group having a transmission device in such as manner as to be capable of connecting and separating on one side of a body frame and a idle roller group the roller shaft of which can be fitted to the bracket of the frame on the other side. CONSTITUTION:An idle roller 11A is disposed on the side 1A of a body frame 1. A transmission device 20 formed of a driven chain ring 30 driven by chain and a transmission roller 31 is provided in such a manner that the transmission roller 31 can be connected with and separated from the idle roller 11A by a cylinder device not shown. On the other side 1B of the body frame 1, an idle roller 11B is disposed with a roller shaft 16 being mounted in such a manner as to be capable of fitting to a bracket 15. The roller shaft 16 is made into a bolt form so that the roller shaft 16 itself is attachable and removable. According to this constitution, the attachment and removal of the roller is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a 17-la conveyor used, for example, when conveying workpieces via pallets.

2. Description of the Related Art Conventionally, this type of roller conveyor has been provided with a structure as shown in, for example, Japanese Patent Application Laid-Open No. 57-160807. This conventional structure has a main body frame (parallel rails)
A conveyance path is formed by providing a large number of rollers that can rotate freely, and a case is provided on the main body frame side via a support bracket or the like. The case is provided with a pin along the axis of the roller, and a wheel and a sprocket are provided on this pin so as to be able to freely rotate together with a sprocket that can simultaneously contact the lower outer periphery of a pair of adjacent rollers. A driving chain supported and guided by the sprocket is engaged with the sprocket. A diaphragm is provided between the case and the pin to move the pin up and down.

According to this conventional method, a driving chain rotates a wheel through a sprocket, and the rotation of this wheel is
The information is transmitted to a pair of rollers that are in contact with each other, and the conveyed object is conveyed on the conveyance path by the rotation of the roller group6.Then, by controlling the feeding and discharging to and from the diaphragm and moving the pin up and down, the roller is connected to the wheel. A drive form in which the
By switching to a non-driving mode in which the wheels are separated from the rollers, the conveying force to the conveyed object is controlled to prevent the conveyed objects from colliding with each other.

Problems to be Solved by the Invention In the conventional method described in Items 1 to 1, it is not necessary to dispose a long and heavy roller when handling a wide object to be conveyed.
Therefore, a strong and large body frame is required accordingly. Since the weight of the 17-ra increases, the driving force through the wheels becomes large, and strong inertial rotation occurs when the 1-ru moves and stops. Is there a large number of stoppers installed in order to move the stop? ff is required. Then, the roller is attached to the main body frame via a fixed shaft (IC hanging work is not easy to do, and the work of sewing and repairing is time consuming.

[! The aim is to create a roller conveyor that can reduce the size of the roller group and drive device (6) even when handling large objects to be conveyed, and also allows the rollers to be easily attached to and detached from the main body frame. be.

Means for Solving the Problems In order to achieve the object described in item 1, the roller conveyor of the present invention has a pair of left and right idle roller groups arranged on the main body frame side,
The idling roller on one side is equipped with a transmission device that can be connected and separated, and a drive device that is linked to each transmission device. It is configured as you like.

According to the configuration of the present invention, by connecting the transmission device to the idle rollers on one side, the driving force of the drive device is transmitted to the idle rollers on the one side, and the group of idle rollers on the one side is transmitted. force rotation. As a result, an object to be conveyed supported between the left and right idle roller groups can be conveyed by the forced rotational force of one of the idle roller groups. By separating the transmission device from the idle rollers on one side, the driving force of the drive device is not transmitted to the idle rollers on one side, and the group of idle rollers on one side is not forced to rotate. This allows the object to be transported to be stopped at a predetermined position. By repeating such operations, the objects to be transported can be sequentially fed. By dividing the idling rollers into right and left groups, even when handling a wide object, the idling rollers of both groups can be made shorter and lighter.
In addition, it is possible to downsize the 1sIiii moving device and the main body frame.

Furthermore, the free rotation V7-ra on the other side can be attached to and detached from the main body frame side by fitting and removing the roller shaft from the brackets 1 to 1.

Embodiment An embodiment of the present invention will be explained based on FIGS. 1 to 8.

1 is a main body frame with a cross-sectional opening shape, and a pair of left and right side frames IA
, IB, and a base frame 10 that connects the lower parts of these side frames IA and 1B, and is installed at a predetermined height above the floor via a plurality of legs 2 connected to this base frame 1C. . [7-shaped kite portions 4A4F] are formed on the opposing inner surfaces of both side frames IA1B, and a nara 1 is formed on the upper part.
~Body 5A.

Dovetail groove portions 6A and 6B are formed without allowing sliding of portion 5B.

In addition, on the inner side of the F section of one side frame 1A, a pair of kite rails 9, 10 are provided via attachment portions 7.8, respectively.
are arranged in the length direction of the frame.

A pair of left and right idle rollers 11 are provided on the main body frame 1 side.
Groups A and 11B are arranged inside the side frames IA and IB. Here, one group of idling rollers 11A is unitized with a transmission device 20 or a braking device 50.

That is, as shown in FIGS. 5 and 7, the transmission device 20 has a case-shaped support frame 21 made of resin as a main body, and the lower end of the vertical base plate 22 is fitted into the kite portion 4A. At the same time, by screwing the ports 1 to 23 passed through the middle of the base plate part 22 to the nut body 5A, the frame can be freely changed (slidably) in the longitudinal direction of the frame and can be fixed in the changed position. The cover plate part 24 is connected inwardly from the inner surface of the lower half of the base plate part 22, and the lower ends of the cover plate part 24 are connected to the connecting plate part 2.
Connected at 5. Further, a bearing hole 26 is formed in the lower part of the base plate 22, and a support shaft 22 in the left and right direction is provided in the bearing hole 26.
The inner end of the support shaft 27 is fitted so that the support shaft 27 can freely swing up and down. A groove 24a that is open on opposing sides is formed in the lower part of the double force bar plate part 24 in the left-right direction. Horizontal plate part 2
The L cedar board 28 made of resin consists of a vertical board part 8a and a vertical board part 28b.
By inserting both edges of the horizontal plate portion 28a into the groove 24a and fixing it, the support frame 21 II! II. Then, four downward parts 29 are formed on the vertical plate part 28b.
The outer end of the support shaft 27 is fitted into the support shaft 27 to restrict the vertical swing range of the support shaft 27. A passive silver ring 3o, which is an example of a passive body, is rotatably attached to this support shaft 27 C-1, and a transmission roller 31, which is an example of a transmission body, is externally fitted onto the protruding boss portion of this passive silver ring 30. Thus, both 30 and 31 can be freely rotated together. The transmission roller 31 is made of urethane rubber, and its outer periphery can be freely connected to and separated from the outer periphery flat portion of the idle roller 11A. Then, an air-using cylinder device (an example of a Nido moving device) 32 for connection and separation is installed between the cylinder rubber receiver G133 and the horizontal plate portion 28a of the L cedar board 28, which is not attached to the outer end of the support shaft 27. It has been intervened.

Further, from the middle of the vertical plate portion 28b of the 1-cedar board 28, a receiving plate 35 is connected inwardly through a bolt 34, and blood is removed between the lower surface of the receiving plate 35 and the cylinder rubber receiver 33. A compression spring 36 is interposed between them to press down and bias the support shaft 27. The transmission device 20 is constituted by the above 21 to 3G.

The vertical plate portions 28b of the cedar board 28 have the same height as the base plate portion 22 and are deformable against elasticity.
, 22, the idling roller 11A is installed between the -L ends of the rollers X1. That is, the idle roller 11A is a small width roller portion 1.
2a and a wide boss portion 12b, and is externally fitted onto the roller shaft 13 via the boss portion 12b so as to freely rotate, and washers 14 are externally fitted on both sides. Then, an inner locking recess 37 that is open to the inside is formed at the upper end of the base plate portion 22, and an inner locking recess 37 that is open to the outside is formed at the upper end of the vertical plate portion 28b.
8 is formed. The upper side of this inner locking recess 38 is
The inner end is covered with a locking piece 39 located at the upper end, and this locking piece 39 is integrally molded with the vertical plate portion 28b. The upper surface of the locking piece 39 is formed into an introduction surface 39a that is inclined downward at the outer edge. Therefore, by engaging one end of the roller shaft 13 with the external locking recess 37, bringing the other end into contact with the introduction surface 39a, and pushing down the other end, a pushing down force is applied to the introduction surface 39a. Vertical plate part 28
b deforms outward against elasticity, and the other end becomes the locking piece 3.
9 and engages with the inner locking recess 38.

At this time, the locking piece 39 is positioned on the lower side of the other end due to the elastic restoring force, and the roller shaft 13 is prevented from being pulled out. In this way, the free-rotating roller IA can be installed in one step, and the roller shaft 13 can be pulled out after the vertical plate portion 28b is deformed against elasticity and then removed.

The drive device 44 interlocked with each transmission device 20 is
A chain 45 meshing with each passive chain m30 as shown in
A driving silver wheel 46 and a driven mirror shaft 47 on which this chino 45 is stretched
, a kite mirror shaft 48, and a motor 49 operatively connected to a driving silver wheel 44, and a chain 45 is supported and guided by the kite rail 9.10.

The braking device 50 has the same structure as the transmission device 20, and only the different parts will be described below. Figure 6~
As shown in FIG. 7, a non-passive silver ring 51 is freely rotatably attached to the support shaft 27, and a brake body 52 made of urethane rubber is fixed to the protruding boss portion of this -II" passive mirror shaft 51. The non-passive S transducer 51 has a toothless shape, and rotates approximately half of the toothless portion 51a facing the chino 45, and also moves the stop flange body 53 that engages between the teeth of the remaining toothed portion 51b. It can be freely inserted into and removed from a support tube formed on the base plate 22. Here, an idle roller with which the brake body 52 can freely come into contact is indicated by 11a,
Further, the cylinder device for moving the support shaft 27 upward is not shown at 54.

The inner diameter of the boss portion 12b of the idling roller 11a is set larger than the outer diameter d of the roller shaft 13, so that the idling roller 11a can be moved up and down and idly with respect to the roller shaft 13 with play. It is freely moveable.

As shown in FIGS. 1 to 4, the other idle roller 11B has a roller shaft 16 that can be freely fitted into a bracket 15 attached to the main body frame 1 side. That is, the bracket 15 includes a vertical plate-shaped base plate 15a and a shaft support part 15b extending inward from the 42 parts of the base plate 15a.
It is made of resin and is integrally molded. In the brackets 1 to 15, the lower end of the base plate part 15a is connected to the kite part 4B.
and a bolt hole 15c formed in the middle.
It is fixed to the side frame IB by screwing the bolt 17 passed through the frame 1 to the body 5B. The shaft support portion 15b is formed with a nut recess 15d that is open only on its upper surface, and a left-right through hole 15e is formed passing through the nut portion 15d. Color 1 in the center of free rotation 17 1 la 11 cho 3
The roller shaft 16, which is inserted through the roller shaft 8, has a port shape and can be freely screwed into a nut 19 positioned within the recess 15d for the neck 1.

Without doing so, place the brackets 1 to 15 at predetermined positions on the side frame 1B via the bolts 17, etc. In this state, by screwing the roller shaft 16 inserted through the idler roller 11B into the nut 19 through the through hole 15e, the idler 177-roller 11B can be attached to the side frame 1B in a one-piece manner, It can also be withdrawn due to adverse effects.

Conveyance route I? consisting of the above groups of idle rollers 11A, 11B, and 11a? 860 is divided into multiple zones in its path direction.
') Chireru. That is, in this embodiment, as shown in FIG. 8, the zone is divided into seven zones A to G in order from the upstream side to the downstream side. In each zone A to G, a braking device 50 is provided opposite to at least one idle roller 11a, and a transmission device 20 is provided opposite to the remaining idle rollers 11A]1. Each zone A
~G is a valve device 61 that is connected and separated separately, and at that time, reversibly connects and separates the braking device 50 and the transmission device 20.
is provided. That is, the cylinder device 3 of the transmission device 20
A first supply/discharge hose 62 connected to the second group and a second supply/discharge port 63 connected to the cylinder device 54 of the braking device 50.
It is configured to be reversibly connectable to a supply bowl 65 from a supply source 64 via a five-boat electromagnetic valve device 61.

The conveyed object 57 consists of a pallet 58 and a product 59 placed on the pallet 58;
does not have to be used.

Two zones adjacent in the conveying direction are provided with a control circuit 70 connected to each valve device 61 so that the transmission device 20 is not connected when there is no conveyed object 57 in the downstream zone.

That is, the control device 71A corresponds to each zone A to G,
71B, 71C, 71D, 71E, 71F71G
These control devices 71A to 71G are connected to each other and to the power supply device 72 in series. In each zone B to G except for the first standby zone A at the most upstream side, inventory detection devices 73B, 73C, 73D, 73E2, 73F, and 73G are installed, and these inventory detection devices 7
3E (-73G is the control device 71 of the adjacent upstream zone
Connected to A~71F. For example, the inventory detection device 73
11 is connected to the control device 71A, and 73C is connected to 71B. Each of the control devices 71A to 71G sends a control signal to the corresponding valve system ffi'61 in order to connect the 5-clock zone and the upstream zone when the downstream cargo presence detection device is not detected. 7/IA, 74B, 74C, 711
1) , 74]=: , 7/ll・'74Gori-
It is structured as well as possible.

Both sides frame], A, IB top edge is Pol I...Nara 1-80
The support plates 81 are removed through the
A kite body 82 is provided on the inner surfaces facing each other.

83 is a cover, 84 is an aging feeding device disposed between both groups of idle rollers 11A and 11B;
A current collector 85 is provided at 58.

Next, a description will be given of the operation of transporting the object 57 in the above embodiment.

Zone C in Figures 1, 5, 7, and 8,
D switches the valve device 61 to connect the first supply/discharge hose 62 corresponding to the transmission device 20 to the supply port 65, and resists the downward urging force of the compression spring 36 by the expansion of the cylinder device 32. The supporting shaft 27 is swung upward, and the transmission roller 31 is brought into contact with the corresponding idle roller IIA from below. At this time, the check 745 is constantly driven by the motor 49, and therefore all the passive silver wheels 30 meshing with the check 745 are rotating around the support shaft 27. Furthermore, the transmission roller 31 forcibly rotates the group of idle rollers 11A by contacting the lower part of the outer circumference of the idle rollers 11A. As a result, the conveyed object 57 on the conveyance path 60 is supported between both groups of idle rollers 11A and 11B, receives conveyance force due to the forced rotation of the idle rollers 11A group on one side, and has both side surfaces attached to the guide body 82. It will be conveyed on this conveyance path 60 in a guided state. At this time, the second supply/discharge hose 63 corresponding to the braking device 50 is open and the cylinder device 54 is inactive, so the pressing of the compression spring 36 causes the support shaft 27 to swing downward by the biasing force. As shown in FIG. 7, a brake body 52 is placed between the idling rollers 11a and 11a. Therefore, no braking action is occurring, and the corresponding idle roller 4 11a descends by the difference (D-d) between the inner diameter 1) and the outer diameter d, as shown by the imaginary line in FIG. Its ``-'' side is set at the same level as the other idle rollers 11A, so that the pallets I~
The movement of 58 results in free rotation.

For example, as shown in zones A, B, and E-G in Figure 8,
The valve device 61 is switched to connect the supply hose 65 to the second cultivation port 63, and the cylinder device 54 is connected as shown in FIG.
The support shaft 27 resists the downward biasing force of the compression spring 36.
By swinging upward and bringing the braking body 52 into contact with the corresponding idle roller 11a from below, the idle rotation of the idle roller Ila is inhibited 1L. At this time, the idling roller 11a rises according to the difference between the inner diameter and the outer diameter d, and its -F surface can be made to protrude higher than the other idling rollers 11A, thereby allowing the transported! A brake can be applied to t#59 to prevent conveyance. When the brake body 52 is brought into contact in this manner, the first supply/discharge boss 62 is opened and the cylinder device 32 is inactive, and the downward biasing force of the compression spring 36 pushes the support shaft 27 downward. Shake it and follow the imaginary line Q in Figure 7.
As shown in , the transmission roller 31 is separated from the idle roller 11A to make the group of idle rollers 11A non-driven.

The roller conveyor consisting of a pair of idling rollers 11A and 11B basically conveys the conveyed object 57 as described above and applies a brake, but in reality the load detecting devices 73B to 73G Conveyance control is performed by switching the valve device 61 based on detection or non-detection.

That is, when there are objects 57 in all zones A to G, these objects 57 are detected by the object detection device 73.
Detected from B to 73G. As a result, as described above, the transmission roller 31 is separated from the idle roller 11A and becomes non-driven, and the braking body 52 is brought into contact with the idle roller 11a, and each zone A to G is under braking action. At this time, power is supplied from the power supply device 84 to the pallet 58 side via the current collector 85, and the product 59 is aged.

After the intended aging work has been completed, the objects 57 in the most downstream zone G are carried out. Then, since the detection signal from the cargo presence detection device 73G of zone G becomes zero, that is, the detection signal from zone F which is adjacent in the conveyance direction
In zone G, the control signal 741? is sent from the control device 71F corresponding to zone F to the valve device 61 because the transported object 57 is absent in zone G on the downstream side. At the same time, the control signal 7/IG is output from the control device 71G corresponding to zone G to the valve device 61, and as a result, both valve devices 61
However, the connection of the supply port 65 to the first supply/discharge hose 62 is automatically switched. However, in both zones F and G,
As the braking body 52 moves away, the transmission roller 31 moves into contact with the brake body 52 and enters the driving state, so that the transported object 57 in zone F
will be transported to Zone G. When the conveyed object 57 is carried into the zone G and detected by the object detection device 73G, this zone G becomes non-driven, and the braking body 52 acts on the free rotation 17-ra 11a, so that the conveyed object 57 is stopped. It will be subject to braking action. Furthermore, as the conveyed object 57 is carried out to zone G, the detection signal from the presence detection device W73F of zone F disappears, and as a result, zones E and F become driven in the same manner as described above, and zone E The transported object 57 is transported to zone F. By repeating such operations, the objects 57 on the transport path 60 can be sequentially transported between the zones. Note that FIG. 8 shows a case where %57 of the conveyed objects in zone C are being conveyed to zone D.

9 to 11 show another embodiment of the invention.

That is, a left-right direction penetration part 40 is formed in the upper part of the base plate part 15a in the brackets 1 to 15, and a downward edge forming the upper part of this penetration part 40 is a locking part 41. A bearing recess 42 is formed in the shape of a gutter in the shaft support portion 15b, and the outer end of the bearing recess 42 communicates with the through portion 40. Furthermore, a locked portion 4 is provided at the free end of the roller shaft 16.
3 is formed in a concave shape.

Therefore, when the bracket 15 is attached to the predetermined position of the side frame IB via the bolt 17, etc., the roller shaft 16 inserted through the idler roller 11B is inserted into the roller shaft 16, as shown by the imaginary line in FIG. The locking part 43 is oriented upward and the free end is inclined so as to be at the lower side, and is inserted into the penetrating part 40 from this free end side. Then, the locked portion 43 is connected to the locking portion 4.
The roller shaft 16 is made horizontal while facing the roller shaft 1 from diagonally below. As a result, the roller shaft 16 is moved into the bearing recess 4 as shown by the solid line in FIG.
2 and lock the locked part 43 to the locking part 41.
1, and the idle roller 11B is moved to the side frames 1 and 13.
In the attached state, the 17-ra shaft 16 can be fitted in the bearing recess 42 in a one-piece manner, and can be detached by a reverse action. Also, by engaging the locked portion 43 with the engaging portion 11-41, pulling out or rotation in the left and right direction is prevented.

Effects of the Invention According to the present invention having the above configuration, by dividing the idling rollers into left and right groups, the idling rollers in both groups can be shortened and lightened even when handling a wide object to be conveyed. , the inertial rotational force can be reduced, and the drive device and main body frame can be made smaller. Therefore, the conveyed object can be stopped at a predetermined position without providing a collar device, and there is no need for the pallet or the like to have a special shape. Furthermore, the idle roller on the other side can be attached to and detached from the frame side of the main body (1) by fitting and removing the roller shaft into the bracket, and assembly and repair can be performed easily and quickly.

[Brief explanation of drawings]

1 to 8 show an embodiment of the present invention, in which FIG. 1 is a vertical sectional front view, FIG. 2 is a vertical sectional front view of the roller mounting section, FIG. 3 is a plan view of the bracket, and FIG. The figure is a side view of the same part, Figure 5 is a vertical cross-sectional front view of the transmission gear; A side view explaining piping and control, FIGS. 9 to 11 show another embodiment, FIG. 9 is a vertical sectional front view of the roller mounting section, FIG. 10 is a plan view of the bracket, and FIG. 11 is the same side view. 1... Main frame, IA, IB... Side frame, 11A
. 11B, 11a...Idle roller, 15...Bracket, 15a...Base part, 15b...Shaft support part, 15c
... Bolt hole, 15d... Recess for nut, 15e.
...Through hole, 16...Roller shaft, 17...Bolt,
19... Nut, 20... Transmission device, 27... Support shaft, 30... Passive silver ring (passive body), 31... Transmission roller (transmission body), 32... Cylinder device (- 1-lower movement device), 40... penetration part, 41... locking part, 42...
...Four parts of the bearing, 43...One part of the bearing, 44...Drive device, 45...Cheno,
49... Motor, 50... Braking device, 52... Braking body, 57... Transported object, 58... Pallet ~;
]9...Product, 71A-71G...Control device, 73
13-73G...Inventory detection device, A-G...Zone.

Claims (1)

[Claims] 1. A pair of left and right idling rollers is arranged on the main body frame side, a transmission device that can be connected to and separated from the idling roller on one side, and a drive device interlocked with each transmission device is provided, and the idling roller group on the other side is A roller conveyor characterized in that the roller has a roller shaft that can be freely fitted into a bracket attached to the main body frame side.