JPH03284510A - Roller conveyor with driving device - Google Patents

Abstract

PURPOSE:To dispense with the formation of an eliminated part for disposing a driving part in a roller conveyor for pallets by forming fitting mounting means for chain action passage side guide body and return passage side guide body on one side frame inner surface side middle part and lower part of a lateral pair of side frames, respectively. CONSTITUTION:A support plate part 5 is continuously provided inward from the inner surface side middle part of one side frame 1A of a lateral pair of side frames for supporting both ends of a roller 18 in free rolling state, and a downward opened fitting channel 5a is formed on the upper part of the root part thereof. In the inner surface side lower part, an inward opened fitting holding part 6 is formed in the position just under the fitting channel 5a. A working passage side guide plate 7 made of resin is disposed on the upper plate part 5 to fit its fitting part 7a to the fitting channel 5a. A return passage side guide body 8 is similarly fitted to and disposed on the fitting holding part 6. This constitution dispenses with the formation of an eliminated part for disposing a driving part.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention supports the pallet on which the load is placed and the load itself! l!
This relates to a roller conveyor.

BACKGROUND ART Conventionally, this type of roller conveyor has been disclosed in, for example, Japanese Utility Model Application No. 1-111609 or No. 1-6318.
The 41I structure seen in Publication No. 7 is provided.

This conventional structure consists of a main body frame, a pair of left and right side frames,
It is composed of a base frame that connects the lower portions of these side frames, and supports are attached to opposing surfaces of 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 the drive chain, and a transmission roller that can freely rotate in contact with and away from the conveyance roller. provided. In order to separate the transmission rollers from each other, an air cylinder device is provided that raises and lowers the support shaft. From the middle and lower parts of the inner surface of one side frame, plate-shaped mounting sections are connected inwardly, and these mounting sections are attached to the drive chain's operating path F.
! A guide rail is provided to support the @ side and the return route side. A motor having a drive sprocket is attached to the lower surface of the intermediate part in the longitudinal direction of one side frame, and the lower mounting is a drive guide guided to the lower guide rail through a cutout formed in a part of the lower part. The chain is hung on the driving sedge rocket.

According to this conventional type, the drive chain is moved on both guide rails by the drive of the motor, and the transmission roller is rotated by the sedge rocket meshing with the drive chain moving on the upper working path.

Then, by supplying and discharging air to and from the air cylinder device to make it expand and contract, the support shaft is swung up and down, causing the constantly driven transmission roller to come into contact with and separate from the conveyance roller, and when it comes into contact with the conveyance roller. is being forced to rotate.

Problems to be Solved by the Invention According to the above-mentioned conventional method, both side frames are extruded aluminum products, and therefore, the part used for one side frame must be processed to obtain a cutout before assembly. It must be made.

Furthermore, both mounting portions are completely unnecessary on the other side frame, and there are many problems such as an increase in material costs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a roller conveyor with a drive device that can eliminate the need for machining to create cutouts and can reduce material costs.

Means for Solving the Problems In order to achieve the above object, the roller conveyor with a drive device of the present invention has rollers arranged freely between a pair of left and right side frames, and a drive device for the rollers on the side frames. In the roller conveyor, the drive device includes a chain and a drive section, and a support plate section is provided continuously inward from the inner surface middle part of one side frame, and the chain is mounted on the support plate section. A working path side guide body is provided, and the return path side guide body located below the working path side guide body is attached to the inside open fitting holding part formed at the lower part of the inner surface side of one side frame with its - side. It is fitted and installed.

According to the structure of the present invention, when the chain is being driven, a large reaction force (downward force) is generated in the chain part on the working path side by forcibly rotating the rollers, but the lower surface of the working path side guide body Since the entire armrest is supported by the support plate integral with the side frame, the reaction force described above can be sufficiently stopped. Further, since the kite body on the return path side is only guided by the chain and does not receive much force, it can withstand sufficient support by fitting only the negative side into the open frame. By dividing the guide body on the return path side into the front and back and arranging it so that a gap is created between the opposing ends, it is possible to arrange the drive part without cutting a part of the side frame. may form a section.

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

1 is the main body frame, which is made of extruded aluminum and has a pair of left and right side frames IA and IB, and both side frames IA and IB.
A leg rod IC connected to the lower part of the
and a landing body ID provided at the lower end of the leg bar IC. An L-shaped guide portion 2 is formed on the opposing inner surfaces of the side frames IA and IB, and a wax holder 4 for allowing the nut body 3 to slide is formed on the upper portion. Also, both side frames IA and IB
A support plate portion 5 is continuously provided inward from the middle portion of the inner surface of the support plate portion 5, and a downwardly open fitting fitting is provided above the root portion of the support plate portion 5. 1
15a is formed. Further, a fitting holding portion 6 that is open to the inside is formed at the lower portion of the inner surface, located directly below the fitting groove 5a. On one of the side frames IA, on the support plate portion 5, there is a guide body (rail-shaped) on the action path side made of resin.
7 is included! The fitted portion 7a formed at the upper outer end of the working path side guide body 7 is connected to the fitted portion 7a. It is fitted into lI5a. A return path side guide body 8 made of resin is disposed below the action #IrpA guide body 7, and the fitted portion 8a formed at the outer end of this return path side kite body 8 is connected to the fitting holding portion. 6 is fitted. Resin support frames 9A and 9B are provided on the inner surfaces of the side frames IA and IB so that their lower ends fit into the guide portions 2 so that their positions can be changed (slidably) in the frame length direction. The frames 9A and 9B are formed in the middle and can be attached by screwing the bolt 11 passed through the hole 10 into the nut body 3! Fixed at . The support frame 9A on the - side is case-shaped, and its lower end to be fitted into the guide part 2 and its attachment are connected to a base plate part 12 in which a hole 10 is formed, and from the inner surface of the lower half of this base plate part 12 inward. A pair of front and rear cover plate parts 13 that are arranged in series, a connecting plate part 14 provided between the lower ends of these cover plate parts 13,
A shaft 15 is formed in the lower part of the double force bar plate part 13 in the left-right direction and is open on opposing sides.
is formed. The other support frame 9B has a rectangular plate shape, and a bearing portion 16 is formed above the mounting hole 10. A roller 18 is freely rotatably provided between the support frames 9A and 9B via a roller shaft 17. That is, the roller shaft 17 can be attached by fitting both ends of the roller shaft 17, which is inserted into the roller 18 so as to be freely rotatable relative to the roller 18, into the bearing portion 16, and furthermore, the roller 18 can be freely rotated around the roller axis 19. A drive device (described later) is attached to one support frame 9A.
A transmission device 20 is provided which is always connected to the roller 18 and can be connected to and separated from the roller 18 at any time. That is, a bearing hole 21 is formed at the lower end of the base plate part 12, and the inner end of a 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. Horizontal plate portion 23a and vertical plate portion 23b
The resin-made 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. The outer end of the first support shaft 22 is fitted into a vertical recess 24 formed in the vertical plate portion 23b, thereby regulating the vertical swing range of the first support shaft 22.

A sprocket 25, which is an example of a passive wheel, is rotatably attached to the first support shaft 22.
The transmission roller 26 is fitted onto the boss part of the
can be rotated freely. The transmission roller 26 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 roller 18 . The transmission device 20 is constituted by the above 21 to 26. The support frame 9AfI! In l,
A first cylinder device 30 is provided for connecting and separating the transmission device 20. In other words, the first cylinder assembly J3Q is
A bottomed cylindrical cylinder body 31 that also serves as the central portion of the horizontal plate portion 23a, and an expandable and contractible cylinder rubber 32 that is formed in a ceiling cylindrical shape and is fitted onto the outside of the cylinder body 31.
and a ring-shaped cylinder presser 33 fitted onto the outside to fix the cylinder rubber 32. The cylinder rubber 32 is brought into 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.

The transmission device 20 having the above-described configuration has a support frame 9A.

A large number of rollers are arranged on the main body frame 1, forming a pair with the roller 18 via the rollers 9B and the like.

The drive device 1f40 interlocked with each transmission device 20 is a chain 4
1 and a drive section 42, and is provided near one side frame IA. In other words, in the middle part in the length direction, both side frames IA
, a pair of front and rear flat par 4 fixed between the lower part of IB
3 is attached, and a frame plate-like frame 44 is attached between both flat pars 43 near one side frame IA via a horizontal plate portion 44a and fixing tools (bolts and nuts) 45. A motor 47 is attached to the vertical plate portion 44b of the frame 44 via a fixture 46, and a drive sprocket 49 is attached to the output shaft 48 of the motor 47. Guide sprockets 52 and 53 are disposed before and after the driving sprocket 49 via support shafts 50 and 51 extending from the vertical plate portion 44b. Furthermore, a tension sprocket 55 is provided at a position above and below the upper guide sprocket 52 via an adjustment device 54. The adjustment device 254 described in FJ includes a bearing body 57 that is slidable in a long hole 56 in the longitudinal direction formed in the vertical plate portion 44b, a threaded rod 58 that is inserted into this bearing body 57 in the longitudinal direction, and this threaded rod 5.
A spring 59 is provided between the front end of the threaded rod 58 and the frame 44 to urge the threaded rod 58 to move back and forth, and a nut 60 is engaged with the threaded rod 58 to prevent the maximum movement of the threaded rod 58 from being restricted. The tension sprocket 55 is attached to a support shaft 61 from a bearing body 57.

And the frame 44 has each sprocket 49, 52, 5
3.55 is disposed so as to be located on the same line as the double-edged blade body 7.8 in plan view. Here, return path side guide body 8
is divided into front and rear portions at the drive device 40 portion, and when inserted into the fitting holding portion 6 and arranged, the vertical plate portion 44
By bringing the opposing ends into contact with stopper parts 62 and 63 protruding outward from b, a space 64 for arranging the drive sedge rocket 49 and the upper guide sprocket 52 is formed between these opposing ends. There is.

Note that a nut body 65 protrudes outward from the vertical plate portion 44b,
A cover 67 is disposed outside the sprocket group by a bolt 66 that engages with this. Driven sprockets 68, 69 are provided at the upstream and downstream ends of one side frame IA, respectively, and sprockets 49, 52, 53, 55.
The common chain 41 that interlocks with each sprocket 25 is provided in PA over 6g and 69ffIJ. These 4
1 to 69 constitute the drive device 40. The chain 41 is supported and guided by the working path side guide body 7 coming into contact with it from below in the zero working path that forms a working path that meshes with each sprocket 25 and a return path located below the working path. Similarly, the return path is supported and guided by the return path side guide body 8. As a result, both guide bodies 7 and 8 constitute a guide device for the chain 41.

The transmission device 20 is disposed opposite to most of the rollers 18 except for some. A control device 70 is provided for some of the devices.

This control device 70 has the same configuration as the transmission device 20, and as shown in FIG. It has a vertically swingable structure. A cylindrical boss member 72 is rotatably attached to the second support shaft 71, and a brake body 73 made of urethane rubber is fixed to the boss member 72. This braking body 7
3 has a cylindrical shape, and its outer periphery can freely come into contact with and separate from the lower part of the outer periphery of the roller 18a, and by displacing the phase in the circumferential direction together with the boss member 72, its working part is changed to cope with problems such as tension damage. are doing. A second cylinder device 74 that acts on the second support shaft 72 to bring the brake body 73 into contact is a cylinder rubber receiver 75 attached to the outer end of the second support shaft 71.
and the horizontal plate portion 23a of the L cedar board 23.

The boss member 72 integrally has a toothless sprocket 76, which is an example of a non-passive wheel, and the toothless sprocket 76 has a portion facing the chain 41, as shown in FIGS. 2 and 3. It is formed in the toothless part, and the rest is formed in the toothed part. A stopper body 77 that engages between the teeth of the toothed portion is provided on the braking device 70 side. That is, the stopper body 77 is, for example, a bolt, which can be inserted into and removed from the support tube formed on the base plate 12 in the direction along the axis of the second support shaft 72, and when the stopper body 77 is inserted, the tip part is inserted between the teeth. rush into.

By arranging the rollers 18.18a paired with the transmission device 220 or the braking device 70 at set pitches on the main body frame 1 as described above, the conveyance path WI80 is formed by the group of rollers 18.18a. Reference numeral 81 indicates a packet which is an example of an object to be transported.

As described above, the rollers 18.18a paired with the transmission device 20 or the brake device N70 are grouped into a plurality of groups A, 7@ (plurality) arranged in a predetermined manner as one group, as shown in FIG. 6, for example. B, C...N are arranged and controlled for each group. That is, each group A, B, C
...N, the first supply/discharge hose 83 connected to the first cylinder device 30 group and the second supply/discharge hose 84 connected to the second cylinder device f74 are connected via five solenoid valves 85. It is configured such that it can be selectively connected to an air supply hose 87 from an air supply device 86.

88 is a regulator, and 89 is a silencer. Each of the groups A, B, C, . . . , N is provided with a photoelectric or other inventory detector 90. And the inventory detector 90
A control panel (not shown) is provided to control the entire roller conveyor, such as operating the electromagnetic valve 85 based on detection or non-detection of the roller conveyor.

When assembling the roller conveyor described above, first, the flat parr 43 is fixed between the side frames IA and IB of the main body frame 1. Then, the drive unit 42, which is formed into a unit by attaching the motor 47 and each sprocket 49, 52, 53, 55 to the frame 44, is attached. This is done by fixing the horizontal plate portion 44b to the flat parr 43 using a fixture 45. Next, the working path side guide body 7 is placed on the support plate part 5, and at that time, the fitted part 7a is inserted in the length direction to fit into the fitting part 5a, and the working path side guide body 7 is placed on the supporting plate part 5. is arranged to pass above the drive section 42. Then, the return path side guide body 8 is disposed by inserting its fitted portion 8a in the length direction so as to fit the fitting holding portion 6. At that time, the tip of the insert should be at the stopper part 62.
．． 63, so that the drive sprocket 49 and the like are not contacted, and the arrangement space 64 is formed.

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

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

At B, C...N, the solenoid valve 85 is switched to connect the air supply hose 87 to the first supply/discharge hose 83, and the expansion of the first cylinder device 30 (expansion g>) resists the downward biasing force of the compression spring 37. Then, the first support shaft 22 is swung upward, and all the transmission rollers 26 are brought into pressure contact with the corresponding rollers 18 from below.At this time, the chain 41 is constantly driven by the motor 47, so that the chain 41 All the sprockets 25 engaged with are rotating around the first support shaft 22.Furthermore, the transmission roller 26 is in contact with the lower part of the outer circumference of the roller 18, so that the transmission roller 26 forcibly rotates the group of rollers 18. Therefore, the packet 81 can be transported on the transport path 80 whose entire length is the drive area.At this time, the second supply/discharge hose 84 is open and the second cylinder device 74 is inactive. The second support shaft 71 is swung downward by the downward biasing force of the compression spring 37, and the roller 1 is rotated as shown in FIG.
The brake body 73 is spaced apart from 8a. Therefore, no braking action is occurring and the corresponding roller 18a
will be idle due to the movement of the packet 81.

On the working path side while the chain 41 is being driven, since the lower surface of the working path side guide body 7 is almost entirely supported by the support plate portion 5 integrated with the side frame IA, the rollers 18 are forcibly rotated. It can sufficiently withstand reaction forces such as when In addition, since the return path side guide body 7 only guides the chain 41 and does not require much force, only the - side is connected to the side frame IA.
Supports fitted on the sides can also be sufficiently durable.

For example, as shown in group B in FIG. 7, the solenoid valve 85 is switched to connect the air supply hose 87 to the second supply/discharge hose 84, and as shown in FIG. The second support shaft 7 resists the downward biasing force of 37.
By swinging the roller 1 upward and pressing the braking body 73 against the corresponding roller 18a from below, the roller 18a
packet 81 can be prevented from idling.
The brakes can be applied to prevent transport. Note that when the brake body 73 is brought into pressure contact as shown by the temporary R line O in FIG.
The supply/discharge hose 83 is opened and the first cylinder device 30 is inactive, and the first support shaft 22 is swung downward by the downward biasing force of the compression spring 37, as shown by the imaginary line Q in FIG. The transmission roller 26 is spaced apart from the row 18, and these rollers 18 are not driven. For example, as shown in FIG. 7, when the packet 81 is in the slew state even in the group B, the packet 81 transported by the group A in the driving state is detected as being in the cargo state as shown by the virtual line R during the transport. detected by the device 90. When this detection signal and the detection signal from group B are input, the solenoid valve 85 of group A is automatically switched to separate the transmission roller 26 and press the brake body 73 as described above.

This applies a brake to the packet 81 and makes it possible to stop the packet 81 without colliding with the packet 81 in front, as shown by the imaginary line S.

For example, when the packet 81 of group B is carried out, the detection signal from the presence detector 90 of group B disappears, so the solenoid valve 85 of group A is activated! 11
1IrpJ and transports the packet 81 to group Bpl.

In the above embodiment, there is a transmission device between the drive device 40 and the roller 18! ! 20 has been described, but this
A sprocket may be provided on the 8 side and driven directly by the chain 41.

Effects of the Invention According to the present invention configured as described above, the working force F is reduced during driving of the chain.
! A large reaction force (downward force) is generated in the chain part on the @ side by forcing the roller to rotate, but almost the entire lower surface of the guide body on the action path side is supported by the support plate part integrated with the side frame. Therefore, the above-mentioned reaction force can be sufficiently suppressed. In addition, since the return path side guide body only guides the chain and does not require much force, it can withstand sufficient support even if only that example is fitted into the side frame. By dividing the guide body on the return path side into the front and back and arranging it so that a gap is created between the opposing ends, it is possible to arrange the drive part without cutting a part of the side frame. This allows for lower overall material costs.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a partially cutaway front view of the transmission device, FIG. 2 is a partially cutaway front view of the braking device, and FIG. 3 is a part of the main part. FIG. 4 is a partially cutaway plan view of the drive unit, FIG. 5 is an overall front view, and FIGS. 6 and 7 are schematic side views showing the conveyance state. 1...Main frame, IA, IB...Side frame, 5...
・Support plate part, 5a... Fitting groove, 6... Fitting holding part,
7... Working path side guide body, 7a... Fitted part, 8
... Return path side guide body, 8a ... Fitted part, 9A
, 9B... Support frame, 17... Roller shaft, 18.18
a...Roller, 20...Transmission device, 22...First
Support shaft, 25... Sprocket, 26... Transmission roller, 30... First cylinder device, 40... Drive device,
41...Chain, 42...Drive unit, 44...Frame, 47...Motor, 49...Drive sprocket, 62.63...° stopper part, 64...Arrangement space,
70... Braking device, 71... Second support shaft, 73...
Braking body, 74...Second cylinder device, 80...Transport route, 81...Packet (transferred object).

Claims (1)

[Claims] 1. A roller conveyor in which rollers are freely rotatably disposed between a pair of left and right side frames, and a drive device for the rollers is provided on the side frames, the drive device comprising a chain and a drive section,
A support plate portion is provided inwardly from the inner surface middle portion of one side frame, and a working path side guide body of the chain is provided on the support plate portion, and is located below the working path side guide body. A roller conveyor with a drive device, characterized in that a return path side guide body is attached by fitting one side of the return path side guide body into an inwardly open fitting holding part formed at the lower part of the inner side of one side frame.