JPH03284509A - Roller conveyor - Google Patents

Abstract

PURPOSE:To allow the high-speed sending out and positive and reverse carrying with a simple structure, in a roller conveyor for carrying pallets, by providing a roller driving device by a chain on either of a lateral pair of support frames for supporting a roller, and disposing a high-speed roller driven by the chain on the end of a carrying passage. CONSTITUTION:A first support shaft 22 is oscillated upward by the expansion of a first cylinder 30 to press a full-transmission roller 26 into contact with the corresponding roller 18 from under. On the other hand, a sprocket 25 is continuously rotated around the support shaft 22 as a chain 40 is continuously driven, so that the roller 18 is forcedly rotated, and a pallet is moved along a carrying passage 60. At this time, a second support shaft 51 is oscillated downward, and a brake is in non-operated state. As a high-speed roller 72 is continuously rotated at high speed by the chain 40, on the end part of the carrying passage 60, the carried pallet is sent out at high speed. According to this constitution, the sending out can be rapidly performed with a simple structure.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a roller conveyor that supports and conveys pallets loaded with loads and loads themselves.

BACKGROUND OF THE INVENTION Conventionally, as this type of roller conveyor, a structure as shown in, for example, Japanese Utility Model Application Publication No. 1-111609 has been provided. In this conventional oval, the main body frame is composed of a pair of left and right side frames and a base frame connecting the lower portions of these side frames, and supports are attached to opposing surfaces of the both side frames. A conveyance roller is freely rotatably supported between both supports via a bearing body. One of the supports is provided with a spindle that can swing up and down, and on this spindle, there is a sprocket that constantly engages with the drive chain, and a transmission roller that freely rotates between M and abutment against the conveyance roller. established in An air cylinder device is provided that moves the support shaft up and down in order to bring the transmission roller into contact with and away from it.

According to this conventional method, by operating an air cylinder device, the support shaft is swung up and down using the bearing hole as a fulcrum, and the transmission roller, which is constantly driven via the drive chain or sprocket, is used as the conveyor roller. They are brought into contact and separated, and the conveyance rollers are forcibly rotated when they come into contact.

Problems to be Solved by the Invention According to the above-mentioned conventional method, it is possible to sequentially feed, store, and send out the transported object, but the feeding speed is the same as during sequential feeding, and the sending of the transported object is not detected. It takes time to move on to the next sequential feed, making it impossible to perform the work efficiently as a whole.To solve this problem, a belt conveyor-type tact feeder is installed at the end of the conveyance path to move the conveyed objects at high speed. It may be possible to send the belt out, but this would require a separate device, and furthermore, in the case of forward/reverse conveyance, the belt would meander during reversal.

SUMMARY OF THE INVENTION An object of the present invention is to provide a roller conveyor that can send objects to be transported at high speed without installing any special equipment, and can always smoothly transport objects in forward and reverse directions.

Means for Solving the Problems In order to achieve the above objects, the roller conveyor of the present invention has the following features:
A pair of left and right support frames are attached to the main body frame side, and a roller is freely rotatable between these support frames, and one support frame is constantly linked to a drive device via a sprocket and connected to the roller. Equipped with a separable transmission device,
The drive device includes a chain 2 that is linked to a sprocket of the transmission device, and a drive unit that is linked to the chain 2, and includes a high-speed roller supported between a pair of left and right support frames at the end of the conveyance path. A passive sprocket integrated with this high-speed roller is interlocked with the chain 2.

According to the structure of the present invention, by connecting the transmission device interlocked with the drive device to the roller, the roller can be forcibly rotated by the driving force of the drive device, and by being separated from the roller by reverse operation, The rollers can be deactivated. At this time, the high-speed roller is constantly rotated via the checker 2, so that the object to be conveyed from the end of the conveyance path can be quickly sent out at high speed. Also, when the drive device is driven in reverse, it may be damaged! The I feed can be drawn in at high speed by high speed rollers.

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

In Figures 1, 3, and 5, 1 is the main body frame,
It consists of a pair of left and right open frames IA, IB, a leg bar IC connected to the lower part of both side frames IA, IB via bolts and nuts 28A, 28B, and a landing body ID provided at the lower end of this leg bar IC. Both sides frame IA.

L-shaped guide portions 2A are provided on opposing inner surfaces of the IB.

2B is formed, and further above is a nut body 3A.

Dovetail grooves 4A and 4B are formed to allow sliding of the slider 3B.

Also, on one side frame IA, a pair of upper and lower guide rails 7 are attached to the inner surface of the lower part of the side frame IA through parts 5 and 6, respectively.
．． 6 side frames IA, where 8 is arranged in the frame length direction;
On the inner surface side of the IB, its lower end is connected to the guide portions 2A, 2B.
Support frames 9A and 9B made of resin are provided so as to be able to change their positions (slidably) in the length direction of the frame, and these support frames 9A and 9B are installed in holes 10A formed in the middle part.
The bolts 11A and 11B passed through the IOB are screwed into the nut bodies 3A and 3B to be fixed at the changed position. One support frame 9A has a case shape, and its lower end to be fitted into the guide portion 2A and its attachment are connected inwardly from the inner surface of the lower half of this substrate portion 12 with the substrate portion 12 in which the hole 10A is formed. A pair of front and rear cover plate parts 13 provided, a connecting plate part 14 provided between the lower ends of these cover plate parts 13, and sides formed in the left-right direction at the lower part of the double force bar plate part 13 and opposite to each other. A bearing portion 16A is formed above the hole 10A to which the base plate portion 12 is attached. The other support frame 9B has a rectangular plate shape, and a bearing portion 16B is formed above the mounting hole 10B. A roller 18 is rotatably provided between the support frames 9A and 9B via a roller shaft 17. In other words, the roller shaft 17 is inserted into the roller 18 so as to be freely rotatable relative to the roller 18.
The roller shaft 17 can be attached by fitting both ends of the roller into the bearing parts 16A and 16B, and the roller 18 can freely rotate around the roller axis 19. Is there a transmission device attached to one support frame 9A that is always connected to a drive device (described later) and that can be connected to and separated from the roller 18? lF2O is provided.

That is, a bearing hole 21 is formed at the lower end of the base plate 12,
The inner end of the first support shaft 22 disposed along the roller axis 19 is fitted into the bearing hole 21 so that it can freely swing up and down.

A tree F consisting of an s-board part 23a and a vertical board part 23b,! ! ! The Japanese cedar board 23 is attached to the support frame 9A side by inserting both edges of the horizontal board portion 23a into the groove 15 and then fixing it. Then, the outer end of the first support shaft 22 is fitted into the vertical recess 24 formed in the vertical plate portion 23b.
The vertical swing range of 2 is regulated. A sprocket 25, which is an example of a passive wheel, is rotatably attached to the first support shaft 22, and a transmission roller 26 is fitted onto the boss portion of the sprocket 25, so that both 25 and 26 can freely rotate together. . The transmission roller 26 is made of urethane rubber, and its outer periphery can freely come into contact with the lower outer periphery of the roller 18. The transmission device 20 is constituted by the above 21 to 26. The transmission device 20 is attached to the support frame 9Al111.
A first cylindrical device 30 is provided which increases the number of connections M*. That is, the first cylinder device 30 includes the horizontal plate portion 23a.
A cylinder body 31 having a bottomed cylindrical shape and having a center portion serving as a bottom portion;
1, a compressible cylinder rubber 32 that is fitted onto the outside of the cylinder 1, and a ring-shaped cylinder holder 33 that fixes the cylinder rubber 32.
It consists of. *The cylinder rubber 32 is in contact with a cylinder rubber receiver 27 attached to the outer end of the first support shaft 22 from below. Furthermore, a plate 36 is connected inward from the upper end of the vertical plate portion 23b of the Japanese cedar plate 23 via a fixing device 35 such as a bolt, and this plate 36 is connected to the lower surface of the plate 36 and the upper surface of the cylinder rubber receiver 27. A compression spring 37 is interposed between the first support shaft 22 and the first support shaft 22. A large number of the transmission devices 20 having the above-described configuration are disposed on the main body frame 1, forming a pair with the rollers 18 via the support frames 9A, 9B, etc. As shown in FIGS. 3 and 5, a common chain 40 interlocking with each sprocket 25 is connected to a guide sprocket 4 between a driving sprocket 41 and a driven sprocket 42.
3 etc., and the drive sprocket 41
is operatively connected to a motor 44, which is an example of a drive section.

These 40 to 44 constitute a drive device 45. The chain 40 forms a working path that anastomoses to each sprocket 25 and a return path located below the working path. In the working path, the chain 40 is supported and guided by the guide rail 7 attached to the section 5 coming into contact with it from below, and in the return path, the chain 40 is similarly supported by the kite rail 8 attached to the section 6. You will be guided. As a result, the two guide rails 7.8 constitute a guiding device for the chain 40.

The transmission device 1 [20 is disposed opposite to most of the rollers 18 except for a part. A braking device 50 is provided for some of the devices.

This braking device f50 has the same structure as the transmission device 20, and as shown in FIGS. 1 and 4, the roller axis 19
It has a second support shaft 51 extending along , whose inner end is fitted into the bearing hole 21 so as to be vertically swingable. And to the second branch @51,
A cylindrical boss member 52 is rotatably attached, and a brake body 53 made of urethane rubber is fixed to this boss member 52. This brake body 53 has a cylindrical shape, and its outer periphery is connected to the roller 18a.
The outer periphery of the outer circumferential lower part is able to come into contact with and separate from the outer periphery, and by displacing the phase in the circumferential direction together with the boss member 52, the operating part is changed to cope with wear and tear. Said second support shaft 5
A second cylinder device 54 is provided between the cylinder rubber receiver 55 attached to the outer end of the second support shaft 51 and the horizontal plate portion 23a of the L cedar board 23. It has been intervened.

The boss member 52 integrally has a toothless sprocket 56, which is an example of a non-passive wheel, and the toothless sprocket 56 has a portion facing the chain 40 formed as a toothless portion, and the rest of the toothed sprocket 56 is formed as a toothless portion. It is formed in the part.

The brake device 501) ml is provided with a stopper body 57 that engages between the teeth of the toothed portion. That is, the stopper body 57
The bolt is, for example, a bolt that can be inserted into and removed from the support tube formed on the base plate 12 in a direction along the axis of the second support shaft 51, and when the bolt is inserted, the tip end enters between the teeth.

As described above, by arranging the rollers 18.18a paired with the transmission device [20 or the braking device 50] on the main body frame 1 at a set pitch of 1, a conveyance path 60 is formed by the group of rollers 18.18a. Reference numeral 61 indicates a baguette, which is an example of the object to be transported.

As shown in FIGS. 1 and 2, a high-speed roller 72 supported by a pair of left and right support frames 71A and 718B is provided at the end of the conveyance path 60. That is, the support frames 71A, 7
1B has a rectangular plate shape similar to the other support frame 9B described above, and a high speed roller 72 is provided to freely rotate via a roller shaft 73. A passive sprocket 74 is integrally provided at one end of the high-speed roller 72, and the chain 40 is stretched over the passive sprocket 74 by m. Here, the high-speed roller 72 has a rubber cylindrical portion 72b on the roller portion 72a.
is fitted onto the outside and its diameter is made larger than the diameter d of the roller 18, so that both sprogets 25 and 74 are similar but move at a high circumferential speed relative to the roller 18. At the upper position of the driven sprocket 42, the upper surface thereof is arranged to be slightly higher than the upper surface of the roller. Also, near the passive sprocket 74, there is a 10-gait 75 supported by one support frame 71A.
will be provided.

As described above, the rollers 18.18a paired with the transmission device 20 or the braking device 50 are grouped into a plurality of groups A, 7 rollers (a plurality of rollers) in a predetermined arrangement as shown in FIG. B, C...N are arranged and controlled for each group. That is, each group A, B, C
...N, the first water supply/discharge hose 63 connected to the first cylinder device 30 group and the second supply/discharge hose 64 connected to the second cylinder device 54 are supplied via solenoid valves 65 of five boats. It is configured so that it can be selectively connected to an air supply hose 67 from an air device 66.

Reference numeral 68 indicates a regulator, and reference numeral 69 indicates a silencer. Each group A, B, C...N is provided with a presence detector 70 such as a photoelectric type. And the inventory detector 70
A control panel (not shown) is provided to control the entire roller conveyor, such as operating the solenoid valve 65 based on detection or non-detection of the roller conveyor.

Next, the conveyance work in the above embodiment will be explained.

Figures 1, 3, and 6 are all group A.

At B, C...N, connect the air supply hose 67 to the first supply/discharge hose 63! Switch the solenoid valve 65 to the Ij pillow and install the first cylinder! 30 causes the first support shaft 22 to swing upward against the downward biasing force of the compression spring 37, thereby bringing all the transmission rollers 26 into pressure contact with the corresponding rollers 18 from below. At this time, the chain 40 is constantly being driven by the motor 44, and therefore all the sprockets 25 engaged with the chain 40 are rotating around the first support shaft 22. Further, since the transmission roller 26 is in contact with the lower outer circumference of the roller 18, the group of rollers 18 is forcibly rotated, and thus the packet 61 can be conveyed on the conveyance path 60 whose entire length is a driving area. At this time, the second water supply and drainage basin 64 is open, the second cylinder device 54 is inactive, and the second
The support shaft 51 is swung downward to separate the brake body 53 from the roller 18a as shown in FIG. Therefore, no braking action is occurring and the corresponding roller 18
A will be idle due to the movement of the packet 61.

For example, as shown in group B in FIG. 7, the solenoid valve 65 is switched to connect the air supply hose 67 to the second supply/discharge hose 64, and as shown in FIG. The pressing force of the spring 37 is applied to the second support shaft 5 against the urging force.
By swinging the roller 1 upward and pressing the braking body 53 against the corresponding roller 18a from below, the roller 18a
packet 61 can be prevented from idling.
The brakes can be applied to prevent transport. Note that when the brake body 53 is brought into pressure contact as shown by virtual taO in FIG. Then, the first support shaft 22 is swung downward, and the transmission roller 26 is separated from the roller 18 as shown by the phantom line Q in FIG. 1, so that the group of rollers 18 is not driven. When the packet 61 is in the storage state even in group B, the packet 61 transported by group A in the driving state is detected by the inventory detector 70 as shown by the virtual line R during the transport. . When this detection signal and the detection signal from group B are input, the solenoid valve 65 of group A is automatically switched to separate the transmission roller 26 and press the brake body 53 as described above.

As a result, the brake can be applied to the packet 61 and the packet 61 can be stopped without colliding with the packet 61 in front, as shown by the imaginary line S.

When group N is put into a driving state by a feed command from the downstream side, the packets 61 of group N are transferred onto a high-speed roller 72 that is constantly rotating, and the outer periphery of this high-speed roller 72 is moved at high speed. From there, the packet 61 is quickly sent out at high speed. When the packet 61 of group N is carried out in this way, this group N
Since the detection signal from the inventory detector 70 disappears,
The solenoid valve 65 of group N-1 is automatically switched to the drive side, and the baguette gamma toro 1 is transferred to group N1) II.

The operations described above are controlled by a control panel. and cylinder rubber 32 in both cylinder devices 30.54.
Reversible connection of 20.50 by expansion and contraction of
Separation action takes place.

Note that in order to increase the speed of the high-speed roller 72, the passive sprocket 74 may be made smaller in diameter than the sprocket 25.

Effects of the Invention According to the present invention having the above configuration, by connecting the transmission device interlocked with the drive device to the roller, the roller can be forcibly rotated by the driving force of the drive device, and the roller can be separated from the roller by reverse operation. , the rollers can be brought into a non-driving state. At this time, the high-speed rollers are constantly rotated via a shared chain, so the objects to be transported from the end of the transport path are
It is possible to quickly send out the object at high speed without installing any special equipment, and the overall conveyance work can be carried out efficiently.6 Also, when the drive device is driven in reverse, the conveyed object is transported at high speed and speed by high-speed rollers. It can be pulled in smoothly.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view of the main part, Fig. 2 is a partially cutaway front view of the high-speed roller section, and Fig. 3 is a part of the transmission unit. FIG. 4 is a partially cutaway front view of the braking device section, FIG. 5 is an overall ljM cut-away sectional view, FIG. 6 is a schematic side view showing the conveyance state, and FIG. ...Body frame, IA, 1B...
・Side frame, 9A9B... Support frame, 12... Board part, 1
3...Cover plate part, 16A, 16B-...Bearing part,
17--Roller shaft, 18.18a-Roller, 20...
・Transmission device, 21... Bearing hole, 22... First support shaft, 23... L cedar plate, 25... Sprocket, 26...
...Transmission roller, 30...First cylinder device, 31.
...Cylinder rubber, 31a...Bottom part, 31b...Cylinder part, 32...Cylinder rubber, 32a...Top part, 32
b...Cylinder part, 33...Cylinder holder, 33a...
Flange portion, 33b... Arc-shaped surface, 37... Compression spring, 3
8... Hanging plate, 40... Chain, 44... Motor (drive part), 45... Drive device, 50... Braking device!
, 51... Second support shaft, 53... Braking body, 54...
Second cylinder device, 60... Conveyance path, 61... Packet (object to be conveyed), 70... Load presence detector, 71A,
71B... Support frame, 72... High speed roller, 73...
...Roller shaft, 74...Passive sprocket.

Claims (1)

[Claims] 1. A pair of left and right support frames are attached to the main body frame side, and a roller is arranged between these support frames so that it can freely rotate.
One support frame is provided with a transmission device that is always connected to the drive device via a sprocket and can be connected to and separated from the roller, and the drive device is connected to a chain that is linked to the sprocket of the transmission device, and to this chain. A high-speed roller supported between a pair of left and right support frames is provided at the end of the conveyance path, and a passive sprocket integrated with the high-speed roller is linked to the chain. conveyor.