JP3112200B2 - Roller drive unit, roller braking unit and roller conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller driving unit for driving a roller to rotate, a roller braking unit for regulating the rotation of the roller, and a roller conveyor using the roller driving unit and the roller braking unit.

[0002]

2. Description of the Related Art Conventionally, in a roller conveyor, as described in, for example, Japanese Patent Application Laid-Open No. 63-123707, a plurality of transport rollers are rotatably mounted on a shaft between a pair of frames. A pair of transport rollers are selectively driven to rotate by a roller drive unit disposed below the rollers. The transported object placed on the transport surface is transported.

In a conventional roller drive unit, a support frame is provided on one frame so as to be swingable around a swing support shaft provided in parallel with the transport roller, and the support frame is provided with a rotating shaft parallel to the transport roller. A driving roller is rotatably supported, and a sprocket meshing with a chain driven to run along one frame is provided so as to rotate coaxially and integrally.

The drive roller is constantly rotating due to the running of the chain. When the support frame is raised by the actuator, the drive roller comes into contact with the lower portion of the pair of transport rollers to transmit a rotational force to the transport rollers. And also
By lowering the support frame, the drive roller separates from the pair of transport rollers, and stops transmitting the rotational force to the transport rollers.

Further, there is a roller braking unit in which a brake shoe is brought into contact with a lower portion of the transport roller to brake the rotation of the transport roller.

[0006]

However, in the conventional roller drive unit, the support frame is swung about a swing support shaft parallel to the transport roller, and the drive roller of the support frame is placed below the pair of transport rollers. Due to the contact structure, the driving rollers are paired with each other based on the positional relationship between the rotation center position of each pair of conveying rollers, the position of the swing support shaft of the support frame, and the position of the rotation shaft of the drive roller relative to the support frame. It is difficult to evenly contact the lower part of the transport roller, and it is difficult to transmit a uniform rotational force to the pair of transport rollers.

Also, in a roller braking unit that brakes the rotation of a transport roller, there is a problem that it is difficult to apply an equal braking force to the pair of rollers when braking the pair of transport rollers at the same time.

Therefore, the present invention has been made in view of the above points,
A roller drive unit capable of transmitting an equal rotational force to a pair of rollers, a roller brake unit capable of applying an equal braking force to a pair of rollers, and a roller drive unit and a roller brake unit thereof. It is an object of the present invention to provide a roller conveyor.

[0009]

Drive roller of claim 1, wherein Means for Solving the Problems]
Kinematic unit, a pair of rows la, a selectively driven rollers driven unit by a driving force transmitted endless body or we traveling in a direction perpendicular to the axial direction of the row La, vertical section Contact and in substantially L-shaped having a horizontal portion, and Burake <br/> Tsu bets in which a pair of pivotally supported portions for supporting the front <br/> Symbol pair of rows La in its vertical portion, the horizontal portion of the bracket On the axis of the roller
Support the support shaft in the direction perpendicular to the direction and along the horizontal
The endless body is provided as a point
A support frame having an end member travel path, the elevating hands stage to the support frame up and down, the rotation is pivotally supported to the row La and the parallel form in a central position between the pair of pivotally supported portions on the support frame ,support
Disc-shaped friction that comes into contact with and separates from a pair of rollers as the frame moves up and down
Body, and supported on the support frame coaxially with the disk-shaped friction body ,
It is obtained by a rotation receiving member that rotates engaged with the endless member to be guided by the endless member running path.

[0010] roller drive unit according to claim 2, wherein, in the roller drive unit according to claim 1 or 2 wherein, blanking <br/>Rake' is deposited detachably on a preparative disc-shaped in contact with the pair of row La a pair of window opening peripheral surface of the friction member is a projectable
Those having a a provided cover member.

[0011] roller drive unit according to claim 3, wherein, in the roller drive unit according to claim 1 or 2 wherein, blanking <br/>Rake' TMG, a mounting portion for mounting the operating controls hand stage for actuating the lifting hands stage It is formed integrally.

[0012] roller drive unit according to claim 4, wherein the claims 1 to 3 <br/> Oite the roller drive unit of any one described, lifting hands stage, diamond <br/> flag to deflation pneumatically It has a beam, the intake of working air into this Daiyafura arm,
Flow part for exhaust in brackets is obtained by integrally formed.

[0013] roller drive unit according to claim 5, wherein the claims 1 to 4 <br/> Oite the roller drive unit of any one described, the upper surface of the vertical portion of the bracket, the communication opening the Kakujiku支portion a mounting hole is formed so as to form, and the slide cover having the locking pawl of the substantially L-shaped locking and detachable on the edge of the mounting hole by sliding while being <br/> inserted into the mounting hole Things.

[0014] roller drive unit according to claim 6, wherein the claims 1 to 5 roller drive unit of any one described <br/> Oite, Brackets, the lower surface of the horizontal portion, the return side of the endless member it is provided with a endless member guide portion for guiding the upper surface.

The roller drive unit according to claim 7, wherein the claims 1 to 6 Oite <br/> the roller drive unit of any one described, below the horizontal portion of the bracket, the lower surface of the endless member of the return side in which it is disposed a support-flop <br/> rate provided an endless member guide path for guiding the.

The roller drive unit according to claim 8, in roller drive unit according to claim 7, wherein the support flop <br/> rate is supplied <br/> hand stage supplies hydraulic source of at least the lifting hand stage it is provided with a supporting portion.

The roller drive unit according to claim 9, wherein, in the roller drive unit according to claim 7, blanking <br/>Rake' TMG, the lower surface of the horizontal portion, the locking portion for locking the support plates in which the provided.

According to a tenth aspect of the present invention, there is provided the roller braking unit ,
A roller braking uni <br/> Tsu you want to selectively braking rotation of the pair of rows la, journalled in a substantially L-shape, the pair of rows La in the vertical portion having a vertical portion contact and the horizontal portion a bracket having a pair of shaft <br/> supporting unit that, along the and the horizontal portion in a direction perpendicular to the axial direction of the rollers on the horizontal portion of the bracket <br/>
Frame that can be raised and lowered with the support shaft in the direction
If the lifting hand stage for elevating the support frame, the support frame on
In it is supported in the row La and the parallel form in a central position between the pair of pivotally supported portions, separable into a pair of rollers according to the elevation of the support frame
A disc-shaped friction body to be, the support frame of the disk-shaped friction member
It is obtained by a fixing member for fixing to a non-rotating state for the.

The roller conveyor of claim 11 includes a pair of frame, a claim 1 which is arranged on one of the frame
A plurality of roller drive unit according to any one described stone 9,
A plurality of b over La rotatably shaft rack between the plurality of roller driving unit and the other frame of the one frame
When, the rollers driving unit travels along one frame
An endless member for transmitting a driving force to the bets, arranged in parallel between the low-La, the sensing row La to detect the conveyed object to be conveyed on rollers, the rollers based on the detection of the conveyed object by the sensing low la of actuating the lifting means of the drive unit
Operation control means .

The roller conveyor of claim 12 has a pair of frames, it is disposed on one of the frame, a lifting means
Biasing means for biasing the support frame upward by using
Rotatably shaft rack between a plurality of roller drive unit of claim 1, 2, 3, 5 to 7 any one described, a plurality of roller driving unit and the other frame of the one frame
A plurality of Russia over La that is, travels along one frame
It is obtained by a endless member for transmitting driving force to the roller drive unit.

The roller conveyor of claim 13, wherein the claim 10 disposed a pair of frames, the one frame
A roller brake unit according to a plurality of B over La rotatably shaft rack between Russia <br/> over La braking unit and the other frame of the one frame Things.

[0022]

[Action] In the roller drive unit according to claim 1, lifting <br/> by operation of the hand-stage both lifting discotic friction body and the support frame, a pair of pivotally supported on a pair of pivotally supported portions of the bracket Low
By discotic friction body abuts against La, rotational force is transmitted to the pair of <br/> row La. And lead on the bracket
Provided with a pivotally supported portion of the pair of rows La in straight portion, the horizontal portion
Above and along the horizontal direction in the direction perpendicular to the roller axis
A support frame is provided that can be raised and lowered with the support shaft in the
Center circularly discotic friction body between a pair of pivotally supported portions on the support frame
The shaft supporting be Rukoto the roller parallel form, a pair of low-La
Centering of the central axis position of the center position and the disk-shaped friction member between is made Rutotomoni, axial direction of the roller while maintaining this state
Support the support shaft in the direction perpendicular to the direction and along the horizontal
The disc-shaped friction body is raised and lowered through the support frame as a point,
Evenly contact Jo friction body against a pair of rows la, transmits evenly rotational force.

[0023] In the roller drive unit according to claim 2,
In the roller drive unit according to claim 1, covering the roller drive unit with the cover body, hiding like engagement portion between the rotary supports body or an endless body.

[0024] In the roller drive unit according to claim 3,
In roller drive unit according to claim 1 or 2, wherein,
For the mounting portion formed integrally on the bracket, and can be attached to <br/> operation control hand stage of the lifting hand stage.

[0025] In the roller drive unit according to claim 4,
In claims 1 to 3 roller drive unit <br/> of any one described, <br/> through the circulation portion which is formed integrally with the bracket Te, the intake of working air to Daiyafura arm is exhausted.

[0026] In the roller drive unit according to claim 5,
In claims 1 to 4 roller drive unit <br/> of any one described wearable and then narrowing down the shaft axis <br/> low to La supporting portion communicating openings on the upper surface of the vertical portion of the bracket, and the slide levers slide mounted on the upper surface of the vertical portion,
To close the upper surface of the axially supported portion is prevented from falling upward row La shaft.

[0027] In the roller drive unit according to claim 6,
In claims 1 to 5 roller drive unit <br/> of any one described, to guide the upper surface of <br/> return side of the endless member in an endless member guiding portion of the lower surface of the horizontal portion of the bracket.

[0028] In the roller drive unit according to claim 7,
In claims 1 to 6 roller drive unit <br/> of any one described, the lower surface of the endless member of the return side endless member guide path on support pre <br/> over preparative disposed below the bracket I will guide you.

[0029] In the roller drive unit according to claim 8,
In roller drive unit according to claim 7, wherein, to support the supply hand stage supplies hydraulic source of the lifting hand stepped in support of the upper surface of the support <br/> plates.

[0030] In the roller drive unit according to claim 9,
The roller drive unit according to claim 7 or 8 ,
Support plates on the lower surface of the locking portion of the horizontal portion of the bracket
I support.

[0031] In the roller brake unit according to claim 10, wherein <br/> is elevated by actuation of the hand stage to lift the disc-shaped friction member fixed to the support frame, it is supported by a pair of pivotally supported portions of the bracket and for a pair of row La by disk-shaped friction member abuts, to brake the rotation of the pair of rollers 5. Then, provided with a pivotally supported portion of the pair of rows La in the vertical portion of the bracket, and the water in a direction perpendicular to the axial direction of the roller on the horizontal portion
Support frame that can be moved up and down with the support axis in the direction along the flat part as a fulcrum
The provided, by setting the central position circularly <br/> discotic friction body fixed state by a fixing member between the pair of pivotally supported portions on the support frame, the central position and the disk-shaped friction between the pair of row La Rutotomoni made centering of the central axis position of the body, while maintaining this state b
Direction perpendicular to the axial direction of the roller and along the horizontal part
Disc-shaped friction body moves up and down via the support frame with the support shaft of
Are evenly contact disc-shaped friction body against a pair of rows La
To give the braking force evenly .

[0032] based on the detection of claim 11 in the roller conveyor according, Ri by the Rukoto using <br/> the claims 1 to 9 roller drive unit according to any one described, conveyed by sensing low La Ru obtained an accumulation function to selectively drive the kilometers over La.

[0033] In the roller conveyor according to claim 12, Noboru
An urging means for urging the support frame upward is used as a descending means.
Claim 1, which, Ri by the Rukoto using roller drive unit according to any one according to no 2,3,5 7, disk-shaped friction body <br/> roller always in contact, b over La is always Rotate . Also in this case, to transfer a uniform rotational force against the pair of conveying rows La.

Claim 13DescriptionofRoller conveyorOK,
Claim 10DescriptionRoller braking unitToUseBy doing
R, BーLaA braking function that selectively brakes rotationProfitYou.
In this case as well, a pair of transport rowsTo laEven braking force
give.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.

FIG. 7 shows the whole roller conveyor, which has a pair of aluminum frames 1 on both sides. The frames 1 are connected by a transverse joint member 2 (shown in FIG. 6) and a plurality of aluminum frames 1 are provided. It is supported by the leg member 3.

[0037] Between the upper part of the pair of frame 1, a plurality of Russia
The transport rollers 5 as rollers are arranged in a rotatable manner at a predetermined pitch, and a transport surface for transporting the transported material is formed on the upper surfaces of the plurality of transport rollers 5. In addition, the transport surface is divided into a plurality of sections, and one sensing roller 6 is arranged in parallel for each section, that is, for each predetermined number of transport rollers 5.

On one frame 1, a chain 8 as an endless body for applying a rotational driving force to the transport roller 5 and the sensing roller 6 is stretched, and the chain 8 is driven to run by a motor 9.

The transport roller 5 is rotatable with respect to a shaft 5a penetrating the center, and one end of the shaft 5a is supported by one of the frames 1 by a roller drive unit 11 shown in FIGS. At the same time, the other end is supported by the other frame 1 by a bearing member (not shown).

One roller drive unit 11 is provided for one pair of transport rollers 5, and includes a bracket 12, a support frame 13, a rotating body 14, a cover body 15, and a slide cover 16. And a member roughly divided into

First, the bracket 12 is made of a synthetic resin and is integrally formed in a substantially L-shape including a vertical portion 21 and a horizontal portion 22. The vertical portion 21 has a joint portion 23 formed on the inner surface of the frame 1 and a fitting portion 24 formed on an upper portion of the joint portion 23 for fitting to the step 1a of the frame 1. . The mounting holes formed on both sides of the fitting portion 24
The bracket 12 is fastened and fixed to the frame 1 by inserting a bolt 26 into 25 and screwing it into a nut 27 fitted and arranged in the groove 1 b of the frame 1.

Side portions 28 are formed on both sides of the joining portion 23, and a concave portion 29 is formed on the outer surface on the upper side of the both side plate portions 28, and the concave portion 29 wraps around the fitting portion 24. A groove 30 is formed. In addition, holes 31 are respectively formed on the lower side of the both side plate portions 28, and a rectangular recess 32 is formed on the outer peripheral edge of one hole 31.

A substantially U-shaped groove-shaped support portion 33 for supporting the shafts 5a of the pair of transport rollers 5 is formed on the upper portion on both sides of the fitting portion 24, and the fitting portions are formed on both sides of each shaft support portion 33 on the upper surface. Mounting holes 34 communicating with the space inside 24 are formed respectively.

The horizontal portion 22 has side plate portions 35 on both sides at the periphery of the upper surface.
The end plate 36 on the front end side is formed upright, and the partition plate 37 is formed upright near the top end.

A concave portion 38 is formed on the upper surface of the horizontal portion 22 on the side of the vertical portion 21 from the partition plate portion 37, and a window hole 39 is formed in both side plate portions 35 facing the concave portion 38, and a bottom surface of the concave portion 38 is formed. Annular projection 40
The elevating means 41 is attached to the upper part of the annular projection 40. The lifting / lowering means 41 includes a diaphragm 42
The diaphragm 42 is hermetically fixed to the annular projection 40 by a sealing member 43 fitted around the diaphragm 42. Further, from both sides of the horizontal portion 22, an annular protrusion 40
A communication part 44 communicating with the inner space of the diaphragm 42 is formed integrally, and working air is sucked into and exhausted from the inside of the diaphragm 42 by operation control means described later through the communication part 44. And, by the intake of the working air, the diaphragm 42
Expands upward, and the diaphragm 42 contracts downward due to the exhaust of the working air.

A mounting portion 45 to which operation control means described later is mounted is integrally formed at the distal end of the horizontal portion 22. The mounting portion 45 includes an end plate portion 36 and a partition plate portion 37. An opening is formed upwardly with the bottom surface as a curved surface, and circular insertion holes 46 are formed in the side plate portions 35 on both sides.

Further, on the lower surface of the horizontal portion 22, a rib-like endless body guiding portion 47 for guiding the upper surface of the return side chain 8 is provided.
Are formed, and a pair of locking portions 48 for locking a support plate 141 described later are formed to protrude. A locking groove 49 is formed below each locking portion 48.

The bracket 12 has a mounting hole 52 formed of a circular hole 50 and a slit 51 at the center of the upper surface of the vertical portion 21 for mounting the cover body 15. A mounting hole 53 is formed in the vicinity, and a mounting groove 54 is formed in the end face portion 36.

Next, the support frame 13 is made of synthetic resin, and is integrally formed with a substrate portion 61 and a pair of rising portions 62 and 63 raised from both ends of the substrate portion 61 in a substantially U-shaped cross section. ing.

The substrate portion 61 has a cylindrical bearing portion 64 formed at one end, an endless running path 65 fixed to one upper surface, and an arc-shaped concave escape portion 66 formed at the other upper surface. ing. The endless running path 65 is formed of a synthetic resin material having excellent wear resistance.
Rail grooves 68 are formed on both sides of 67.

A substantially D-shaped hole 69 is formed in the rising portion 62 at one end.
Are formed on the outer surfaces of both ends of the hole 69.
Are formed. A circular hole is formed in the rising portion 63 at the other end.
A square recess is formed on the outer surfaces of both ends of the hole 71.
A pair of insertion holes 73 are formed on both sides of the concave portion 72.

The support frame 13 is formed in a substantially U-shaped cross section having a pin 75 as a support shaft having a groove 74 provided in the vicinity of one end and a pair of holding pieces 76. The pin 75 is attached to the bracket 12 by a locking tool 78 provided with a fitting groove 77 in which a groove edge fits in a groove 74 of the pin 75. That is, the bearing portion 64 of the support frame 13 is arranged on the bracket 12 so as to face between the insides of the two hole portions 31, and the pin 75 penetrates the bearing portion 64 from one hole portion 31 to the other hole portion 31. Fit, insert both holding pieces 76 of the locking tool 78 on both sides of the side plate 28 at the position of the recess 32,
The pin 75 is prevented from coming off and fixed by fitting the groove edge of the fitting groove 77 of the locking tool 78 into the groove 74 of the pin 75. And
Supporting frame 13 assembled to the bracket 12, the shaft of the transport roller 5
Pin in the direction perpendicular to the direction and along the horizontal part 22
It can swing around 75 as a fulcrum ( center ) , and the diaphragm 42
It moves up and down by the operation of.

Next, the rotating body 14 is a disk-shaped friction body 81
And, a sprocket 83 is provided as a rotation receiving body integrally formed with the shaft portion 82, an end of the shaft portion 82 is connected to the disc-shaped friction body 81, and a bearing hole 84 is formed through the center. Also a disk
A pair of stopper holes 85 are formed on the end surface of the frictional body 81 at positions corresponding to the pair of insertion holes 73 of the support frame 13.

The rotating body 14 has a shaft portion 86 having a substantially D-shaped end at one end and a pin 88 having a groove 87 formed near both ends, and a pair of holding pieces 89 having a substantially U-shaped cross section. And one of the holding pieces 89 is provided with a groove 87 of a pin 88.
It is attached to the support frame 13 by a pair of locking tools 91 provided with a fitting groove 90 into which a groove edge fits. That is, the bearing hole 84 of the rotating body 14 is inserted into the hole 69,
The pin 88 is inserted into the hole 71 and the bearing hole 84, and the shaft 86 is fitted into the hole 69.
Are inserted into both sides of each of the recesses 70 and 72, and the edge of the fitting groove 90 of each locking tool 91 is fitted into each of the groove portions 87 of the pin 88. And secure it.

The rotating body 14 mounted on the support frame 13 is
A disk-shaped friction body that is rotatably supported around pin 88
The lower portion of 81 enters the escape portion 66, and the sprocket 83 faces above the endless running path 65 and meshes with the chain 8 guided on the endless running path 65. Further, the pin 88, which is the center of rotation of the rotating body 14, is located at the center between the pair of shaft supports 33 of the bracket 12.

Next, the cover body 15 is made of synthetic resin.
The supporting frame 13 and the rotating body 14 are formed on a bracket 12 so as to be able to conceal the supporting frame 13 and the rotator 14. A concave portion 101 for preventing interference with the transport roller 5 is formed on both upper sides.
1 has a window hole 102 from which the periphery of the disk-shaped friction body 81 protrudes, a notch 103 through which the chain 8 is inserted at the lower part on both sides, and a lower part of the end face attached to the upper surface of the mounting part 45 of the bracket 12. A cover portion 104 is formed to cover the cover.

The cover body 15 has an engagement piece 105 at one end on both side edges for attachment to the bracket 12, and an attachment piece 108 comprising a shaft portion 106 and a plate portion 107 at one upper end, and a lower portion on both sides at the center. The mounting piece 109 is attached to the bent portion 10 at the tip of the cover 104.
A claw portion 110 is formed on each of 4a. To attach the cover body 15 to the bracket 12, first, the engaging pieces 105 on both sides are inserted into the respective groove portions 30 from above, and the inner surfaces on both sides are fitted into the concave portions 29, and the mounting pieces 108 are attached to the mounting holes 52. Then, the two mounting pieces 108 are inserted into the mounting holes 53, respectively, and the claws 110 are engaged with the mounting grooves 54.

Further, on both sides of the cover body 15, a pair of support pieces 111 are formed so as to protrude substantially horizontally above the notch 103 on one end, and a pair of support pieces are formed on the lower part on the other end.
112 is formed to project in an inclined manner, and these support pieces 111, 112
2, 4 and 5, the chain 8 between the cover bodies 15 of the adjacent roller drive units 11
A cover 113 for covering the upper surface of the device is detachably attached. The cover 113 has locking claws (not shown) protrudingly formed on both sides of the lower surface thereof, and the locking claws are fixed to the slit portions of the pair of support pieces 111 and 112 so as to be attached.

Next, the slide cover 16 is made of a synthetic resin, is formed into an elongated shape substantially the same as the upper surface of the vertical portion 21 of the bracket 12, and mounting brackets 121 are attached to the lower surfaces of both ends, respectively. The mounting bracket 121 is formed by cutting and raising a pair of substantially L-shaped locking claws 122.
A press piece is cut and raised between the pair of locking claws 122. Then, in order to attach the slide cover 16 to the upper surface of the vertical portion 21 of the bracket 12, first, each locking claw 122 is inserted from above into the mounting hole 34, and then, each of the locking claws 122 is slid in one direction so as to slide. Are locked at the edges of the mounting holes 34. In this mounting state, the holding piece 123
It is located above the shaft support 33 and suppresses the rise of the shaft 5a fitted in the shaft support 33.

Next, as shown in FIG. 6, the sensing roller 6 is located at a place where one of the transport rollers 5 of the roller drive unit 11 is disposed in place of the transport roller 5 and has a shaft 6a penetrating the center. The shaft 6a is rotatably supported, and both ends of the shaft 6a are swingably supported by the support member 131 with respect to the transverse member 2. Then, the sensing roller 6 is rotationally urged to protrude from the conveying surface by a spring 133 connected to the sensor lever 132 of the support 131, and the conveyed material conveyed by the conveying roller 5 pushes down the sensing roller 6. As a result, the transport roller 5 descends to the height position. Therefore, when the sensing roller 6 is lowered and the disk-shaped friction member 81 is raised, the disk-shaped friction member 81 comes into contact with the transport roller 5 and the sensing roller 6 and the rotational force is transmitted to each.

The lower part of the sensor lever 132 of the support 131 faces the side of the mounting part 45 of the bracket 12, and the mounting part 45
A mechanical valve 134 as an operation control means mounted on the device is operated. The mechanical valve 134 is housed in the mounting portion 45, and a push button type operating portion 135 is disposed so as to protrude from the insertion hole 46.
It is connected to the supply source of the working air by a pipe, and is connected by a pipe to the diaphragm 42 of each roller drive unit 11 in the section on the upstream side. When the operating portion 135 of the mechanical valve 134 is pushed by the sensor lever 132 with the sensing roller 6 protruding from the transport surface, the working air is sucked into the diaphragm 42 and the sensing roller 6 is lowered. When the pressing of the operating portion 135 is released,
The working air is exhausted from the diaphragm 42.

On one frame 1, a long support plate 141 is provided along the frame 1, below the horizontal portion 22 of the bracket 12 of each roller drive unit 11. The support plate 141 is provided at one edge thereof with a mounting portion 142 that is fitted and fixed to the frame 1.
A projecting ridge 143 is press-fitted and locked in the locking groove 49 of the locking portion 48 of the bracket 12 on the upper surface, and a pair of substantially L-shaped mounting pieces 144 are formed so as to face each other. I have. An endless body guide path 145 for guiding the lower surface of the chain 8 on the return side is mounted between the mounting pieces 144. Also,
On an upper surface of the support plate 141, a support portion 149 for supporting a supply means 148 such as a pipe 146 for sucking and discharging working air to the diaphragm 42, a power supply line 147 and a signal line is formed.

Next, the operation of the present embodiment will be described.

First, the assembly of the roller conveyor will be briefly described. The frame 1 is assembled, a plurality of roller drive units 11 are fixed to one frame 1 at a predetermined pitch, the support plate 141 is fixed, and the other frame 1 is fixed. A plurality of bearing members are fixed corresponding to each roller drive unit 11. At this time, the roller drive unit 11
Other parts are assembled except that the slide cover 16 is removed.

The end of the chain 8 before being connected endlessly is passed between the endless running path 65 of each roller drive unit 11 and the sprocket 83, and the return side is connected to the endless body guide 47 of the bracket 12. The support plate 141 is passed between the endless body guide path 145 and the other end of the support plate 141 so as to be engaged with other sprockets for driving or the like to be connected endlessly. A mechanical valve 134 mounted on the roller drive unit 11 in a predetermined section is connected to each roller drive unit 11 in an upstream section by a pipe. A cover 113 is mounted between each roller drive unit 11.

The sensing roller 6 is attached to the transverse member 2 in a predetermined section by the support 131, and the transport roller 5 is installed between the shaft support 33 of the roller drive unit 11 and the bearing member. Slide cover on top of 21
Install 16.

When the chain 9 is driven to run by the motor 9, the disc-shaped friction member 81 rotates via the sprocket 83 meshing with the chain 8.

When there is no conveyed object on the conveying surface, the sensing rollers 6 corresponding to all the sections protrude from the conveying surface. Therefore, the working air to the diaphragm 42 of each roller drive unit 11 through each mechanical valve 134. Then, the disc-shaped friction body 81 moves up together with the support frame 13 and comes into contact with the transport rollers 5, so that all the transport rollers 5 rotate.

When the transported article is sent to the upstream side of the transport surface, the transported article is transported to the downstream side by the rotation of the plurality of transport rollers 5, and the sensing roller 6 in a certain section is rotated.
Is pushed down by the weight of the conveyed object, the working air is exhausted from the diaphragm 42 of each roller drive unit 11 in the upstream section through the mechanical valve 134, and the support frame 13 and the support frame 13 are exhausted .
And the weight of the disc-shaped friction body 81 and the endless running path 65 of the support frame 13
With the effect of the weight of the chain 8 on it, the support frame 13
In both cases, the disc-shaped friction body 81 descends and separates from the transport roller 5, and the rotation drive of the transport roller 5 in the section on the upstream side is stopped.

When the conveyed object passes over the sensing roller 6 and is conveyed to the next section, the sensing roller 6 is lifted and returned by the urging of the spring 133, and the mechanical valve 13 is returned.
4, the working air is sucked into the diaphragm 42 of each roller drive unit 11 in the section on the upstream side,
At the same time, the disc-shaped friction member 81 rises and comes into contact with the transport roller 5, and the rotational drive of each upstream transport roller 5 is restarted.

Therefore, with such an accumulation function, it is possible to convey articles sequentially fed from the upstream side of the conveying surface at an interval without colliding with each other or pressing them against each other.

Then, as described above, the roller drive unit 11 mounts the pair of transport rollers 5 on the vertical portion 21 of the bracket 12.
And a transport roller on the horizontal portion 22.
5 A direction perpendicular to the axial direction and along the horizontal portion 22
The support frame 13 is provided so as to be able to move up and down with the pin 75
Since the center circularly discotic friction body 81 between the pair of shaft support 33 on the support frame 13 and rotatably supported in parallel form to the transport roller 5, the center position and the disk-shaped friction member 81 between the pair of conveying rollers 5 The center axis position can be reliably centered, and this state is maintained.
The horizontal portion 22 is a direction perpendicular to the axial direction of the transport roller 5 and
Through the support frame 13 with the pin 75 in the direction along
The disk-shaped friction member 81 can be raised and lowered, and the disk-shaped friction member 81 can be moved up and down.
There evenly contact the pair of conveying rollers 5, it can be transmitted evenly times <br/> rolling force.

Further, according to the roller drive unit 11,
There are the following effects.

Since each roller drive unit 11 is covered with the cover body 15, a portion engaged with the sprocket 83 and the chain 8 is not exposed, and an article falling between the transport rollers 5 may be bitten, or an operator's hand may be mistaken. Can be prevented from being bitten.

Attachment part 45 of mechanical valve 134 to bracket 12
Are integrally formed, the number of parts for mounting the mechanical valve 134 can be reduced, and the sensor roller 6 can be easily installed in accordance with the arrangement position thereof.

Since the circulation portion 44 is formed integrally with the bracket 12, the lifting means 41 can be simply constructed simply by attaching the diaphragm 42 to the bracket 12.

The shaft support 33 is provided on the upper surface of the vertical portion 21 of the bracket 12.
Is formed in a communication opening.
The shaft 5a can be easily mounted by dropping. And a slide cover for closing the upper surface of the shaft support 33.
Since the slide 16 is slidably mounted on the upper surface of the vertical portion 21 by the substantially L-shaped locking claw 122, the slide cover 16 can be easily attached, and the shaft 5a can be reliably prevented from dropping upward.

The return side of the chain 8 is guided by the endless body guide portion 47 on the lower surface of the horizontal portion 22 of the bracket 12 and the endless body guide path 145 on the support plate 141 provided below the bracket 12. Can be.

The support 149 on the upper surface of the support plate 141
Can support the pipe 146, the power supply line 147, and the like.

The locking portion 48 on the lower surface of the horizontal portion 22 of the bracket 12
Can support the distal end side of the support plate 141.

Next, FIGS. 8 and 9 show another embodiment of the present invention, in which the roller drive unit 11 is not a roller conveyor having an accumulation function as in the above embodiment, but always drives the transport roller 5. This is an embodiment applied to a roller conveyor. Roller drive unit of this embodiment
Reference numeral 11 denotes a coil spring 151 serving as an urging means for urging the support frame 13 upward between the horizontal portion 22 of the bracket 12 and the support frame 13 instead of the diaphragm 42. Therefore, the urging of the coil spring 151 raises the disc-shaped friction body 81 together with the support frame 13 and
, And the transport roller 5 is constantly driven to rotate.

Also in this embodiment, since the center position between the pair of conveying rollers 5 and the center axis position of the disc-shaped friction member 81 is reliably centered, the pair of conveying rollers 5 An even rotation force can be transmitted.

FIG. 10 shows still another embodiment of the present invention, in which the roller drive unit 11 of the above embodiment is used as a roller braking unit 11a for selectively braking the rotation of the pair of transport rollers 5. This is an example. The roller braking unit 11a of this embodiment has the same structure as the roller drive unit 11, but a screw 152 as a fixing member is screwed into a stop hole 85 of the disc-shaped friction body 81 through a pair of insertion holes 73 of the support frame 13. By doing so, the disc-shaped friction body 81 is fixed to the support frame 13 in a non-rotating state.

Therefore, the expansion of the diaphragm 42 causes
When the disc-shaped friction body 81 rises together with the support frame 13 and comes into contact with the pair of conveyance rollers 5, the rotation of the conveyance roller 5 is braked by the friction between the non-rotating disc-shaped friction body 81 and the conveyance roller 5, and Is selectively stopped.

In this embodiment as well, since the center position between the pair of transport rollers 5 and the center axis position of the disc-shaped friction member 81 are reliably centered, the pair of transport rollers 5 An even braking force can be given. Further
Then, using the roller drive unit 11, the disk-shaped friction body 81
Is fixed to the support frame 13 with the screws 152, so that the roller braking unit
Unit 11a, so units with the same structure
Function can be easily changed according to the application.
You.

[0086]

Effects of the Invention] According to the roller drive unit according to claim 1, provided with a shaft support of the pair of rollers in the vertical portion of the bracket, perpendicular to the axial direction of the roller on the horizontal portion
Can be moved up and down around the support axis in the direction along the horizontal part
A support frame is provided on the support frame, and a disk-shaped friction body is supported on the support frame at a center position between the pair of shaft support portions in parallel with the rollers.
Thus, the center position between the pair of rollers and the center axis position of the disk-shaped friction body can be reliably centered, and this state is maintained.
While keeping it in a direction perpendicular to the axial direction of the roller and along the horizontal
Disc-shaped friction via a support frame with the support shaft in the direction
The body can be moved up and down, and the disc-shaped friction body can evenly contact the pair of rollers to transmit torque evenly .

[0087] According to the roller drive unit according to claim 2, wherein in the roller drive unit according to claim 1, for covering the roller drive unit with the cover body, such causes exposed engagement portion between the rotary receptacle and the endless member not, it is possible to prevent the write Takeno chewed like articles from falling between the rollers.

[0088] According to the roller drive unit according to claim 3, claim 1 or 2 Te roller drive unit smell <br/> description, since the integrally formed mounting portion of the operation control means of the lifting means to the bracket, operation The number of mounting parts for the control means can be reduced, and the control means can be easily installed.

[0089] According to the roller drive unit according to claim 4, claims 1 to 3 roller drive uni any one described
In the kit, since the circulation portion is formed integrally with the bracket, the elevating means can be easily configured simply by attaching the diaphragm to the bracket.

[0090] According to the roller drive unit according to claim 5, claims 1 to 4 roller drive uni any one described
In the slot, the shaft support is formed in the upper surface of the vertical portion of the bracket as a communication opening, so that the roller shaft can be easily mounted by dropping the shaft into the shaft support , and a slide cover for closing the upper surface of the shaft support. Is slide-mounted on the upper surface of the vertical portion by the substantially L-shaped locking claw, so that the slide cover can be easily attached and the roller can be reliably prevented from falling off the shaft.

[0091] According to the roller drive unit according to claim 6, claims 1 to 5 roller drive uni any one described
In Tsu DOO, endless member guiding the lower surface of the horizontal portion of the bracket
Since the portion is provided, the upper surface of the endless body on the return side can be guided.

[0092] According to the roller drive unit according to claim 7, claim 1 to 6 roller driving Uni any one described
In the unit , since the endless body guide path is provided on the support plate disposed below the bracket, the lower surface of the endless body on the return side can be guided.

[0093] According to the roller drive unit according to claim 8, in the roller drive unit according to claim 7, it is provided with the support portion on the upper surface of the support plate, supporting the supply means of the driving source of at least lifting means can.

[0094] According to the roller drive unit according to claim 9, claim 7 or 8 Te roller drive unit smell <br/> description, since the engagement portion provided on the lower surface of the horizontal portion of the bracket,
Support plate can be supported.

[0095] According to the roller brake unit according to claim 10, provided with a shaft support of the pair of rollers in the vertical portion of the bracket, perpendicular to the axial direction of the roller on the horizontal portion
Can be moved up and down around the support axis in the direction along the horizontal part
A support frame is provided on the support frame, and a disk-shaped friction member is supported on the support frame at a central position between a pair of shaft support portions in parallel with the rollers and fixed.
The fixing state with a constant member, reliably centered with the central axis position of the center position and the disk-shaped friction member between a pair of rollers
While maintaining this state.
The fulcrum is the support axis in the direction perpendicular to the direction and along the horizontal part
It is possible to raise and lower the disk-shaped friction body through the support frame
The disk-shaped friction body contacts the pair of rollers evenly .
As a result, the braking force can be applied evenly .

[0096] According to the roller conveyor of claim 11, wherein, Runode with claims 1 to 9 roller drive unit of any one described, selectively based on the Evaluation Technical b over La on the detection of the conveyed object by sensing roller a an accumulation function of driving certainly can give Rukoto.

[0097] According to the roller conveyor of claim 12, the urging means for urging the support frame upwardly as the lifting means
9. The method according to claim 1, wherein the method is used.
Runode with mounting of the roller drive unit, disk-shaped friction body
To uniformly rotate constantly in contact with the roller can Rukoto.

[0098] The According to the roller conveyor of claim 13, Ru using roller brake unit according to claim 10, wherein
In reliably braking function for selectively braking rotation of the roller
It is possible to obtain.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a roller drive unit according to an embodiment of the present invention.

FIG. 2 is a side view of a part of the roller conveyor of the embodiment.

FIG. 3 is a plan view of a part of the roller conveyor of the embodiment.

FIG. 4 is a cross-sectional view of a part of the roller conveyor showing a raised state of the support frame of the embodiment.

FIG. 5 is a cross-sectional view of a part of the roller conveyor showing a lowered state of the support frame of the embodiment.

FIG. 6 is a side view of a part of the roller conveyor of the embodiment.

FIG. 7 is a side view in which a part of the roller conveyor of the embodiment is omitted.

FIG. 8 is a partial perspective view of a roller drive unit according to another embodiment of the present invention, using urging means.

FIG. 9 is a sectional view of a part of the roller conveyor of the embodiment.

FIG. 10 is a cross-sectional view of a part of a roller conveyor using a roller braking unit according to still another embodiment of the present invention.

[Explanation of symbols]

1 frame 5 b conveyance roller 6 sensing roller 8 chain 11 roller drive unit 11a roller brake unit 12 bracket 13 support frame 15 cover member 16 slide cover 21 vertical section 22 a horizontal portion 33 the shaft support 34 mounting hole of the endless member as over La 41 Lifting means 42 Diaphragm 44 Flowing part 45 Mounting part 47 Endless body guide part 48 Locking part 65 Endless body running path 75 Pin as support shaft 81 Disc-shaped friction body 83 Sprocket 102 as rotating receiver 102 Window hole 122 Locking claw 134 Mechanical valve as operation control means 141 Support plate 145 Endless body guideway 148 Supply means 149 Support section 151 Coil spring as urging means 152 Screw as fixing member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-123707 (JP, A) JP-A-3-95008 (JP, A) JP-A-2-91716 (JP, U) JP-A-61-1 132306 (JP, U) US Patent 4,445,527 (US, A) US Patent 4,473,149 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65G 13/00-13/12 B65G 39/00 -39/20

Claims (13)

(57) [Claims] 1. A roller drive unit for selectively driving a pair of rollers by a driving force transmitted from an endless body running in a direction perpendicular to an axial direction of the rollers, the roller drive unit having a vertical portion and a horizontal portion . A bracket having a substantially L-shape and having a pair of shaft supports for vertically supporting the pair of rollers, and a vertical portion thereof, on a horizontal portion of the bracket, orthogonal to the axial direction of the rollers;
Endless body traveling is provided so as to be able to ascend and descend around a support shaft in a direction along the horizontal portion in a direction in which
A supporting frame having a path, elevating means for elevating and lowering the supporting frame, rotatably supported on the supporting frame at a central position between the pair of shaft support portions so as to be rotatable in parallel with the roller, and Yes
Flip a disk-shaped friction member to contact and separate the pair of rollers, wherein is supported by a disc-shaped friction body coaxially on a supporting frame, the Mu
Roller drive unit, characterized in that a rotation receiving member that rotates engaged with the endless member that is guided by the end member travel path. And a cover member provided with a pair of window holes, which is detachably attached on the bracket, and in which a peripheral surface portion of a disk-shaped friction body that comes into contact with the pair of rollers can protrude. The roller drive unit according to claim 1. 3. A bracket, the roller drive unit according to claim 1 or 2, wherein the mounting portion is formed integrally mounting the actuation control means for actuating the lifting means. 4. A lifting means has a diaphragm that deflation pneumatically, intake of the working air to the diaphragm, claims 1, characterized in that formed integrally flow part for exhaust to the bracket 3 The roller drive unit according to any one of the above. 5. A substantially L-shaped connecting hole is formed on the upper surface of the vertical portion of the bracket and a mounting hole is formed, and a mounting hole is formed. The mounting portion is inserted into the mounting hole and is engaged with an edge of the mounting hole by sliding. claims 1, characterized in that the slide cover to be detachable with locking claw-shaped 4 Izu
Roller drive unit Re one described. 6. bracket, on the lower surface of the horizontal portion, the roller drive unit of claims 1, characterized in that a endless member guide portion for guiding the upper surface of the endless member of the return side 5 any one described. Below 7. horizontal portion of the bracket, claims 1, characterized in that disposed support plate provided with an endless body guideway for guiding the lower surface of the endless member of the return side
6. The roller drive unit according to any one of claims 6 to 7 . 8. The roller drive unit according to claim 7, wherein the support plate is provided with a support portion of a supply unit that supplies at least an operation source of the elevating unit. 9. bracket, on the lower surface of the horizontal portion, the roller drive unit according to claim 7 or 8, wherein in that a locking portion for locking the support plate. 10. A roller braking unit for selectively braking the rotation of a pair of rollers, wherein the pair of rollers has a substantially L-shape having a vertical portion and a horizontal portion, and the vertical portion supports the pair of rollers. A bracket provided with a support, and on a horizontal portion of the bracket, orthogonal to the axial direction of the roller.
A support frame provided so as to be able to move up and down with a support shaft in a direction along the horizontal portion along the horizontal direction, an elevating means for raising and lowering the support frame, and between the pair of shaft support portions on the support frame The roller is supported at the center position in parallel with the roller, and a pair of
A roller braking unit, comprising: a disk-shaped friction member that is brought into contact with and separated from a roller ; and a fixing member that fixes the disk-shaped friction member in a non-rotating state with respect to the support frame. 11. A pair of frames, and one of the frames arranged on one of the frames .
A plurality of roller drive units one described, a plurality of B over La rotatably shaft rack between the plurality of roller drive units and the other frame of the one frame, running along one of the frame and an endless member that transmits the driving force to the roller drive unit, arranged in parallel between the rollers, and a sensing roller for detecting the transportable <br/> Okubutsu conveyed on rollers, the conveyance object by the sensing roller operation control hand to operate the lifting means of the <br/> roller drive unit on the basis of the detection
A roller conveyor comprising steps . 12. A pair of frames and one of the frames, wherein the supporting frame is lifted up and down as lifting means.
A biasing means for biasing in a direction is used.
5 to a plurality of roller drive unit 7 to any one described, a plurality of B over La rotatably shaft rack between the plurality of roller drive units and the other frame of the one frame, the one roller conveyors, characterized in that a endless member for transmitting driving force to each roller driving unit travels along the frame. 13. rotatably shaft rack is between a pair of frames, the roller brake unit according to claim 10, wherein disposed in one frame, a roller brake unit and the other frame of the one frame roller conveyors, characterized in that a plurality of b over La that.