JP2003285909A - Roller conveyor installation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller conveyor installation allowing a change in specification from sequential delivery to overall delivery and vice versa with easy piping work. <P>SOLUTION: Cargo existence detecting means 40 each having an accumulator unit 25, a brake unit 30 and a shut-off valve 58 is provided in zones Z<SB>1</SB>-Z<SB>n</SB>, and the inlet side of the shut-off valve 58 is connected to the side of a main supply pipe 110. An solenoid selector valve 105 is provided in the Z<SB>1</SB>on the most downstream side and valve units 60 are provided in the remaining Z<SB>2</SB>-Z<SB>n</SB>. First valve means 62, second valve means 72 and a selector valve 91 for reversibly operating both units 25, 30 are incorporated in each of the valve units 60. The first valve means 62 can supply a working fluid to the second valve means 72 with the shut-off valve 58. The second valve means 72 can supply a selector fluid to the selector valve 91 when the working fluid is supplied by the first valve means 62. A subsidiary supply pipe 120 for the selector fluid can be selectively connected to a distribution pipe 112 ranging for the main supply pipe 110 to the shut-off valve 58 in the downstream zone or a portion ranging from the solenoid selector valve 105 to the supply pipe 116. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to articles (objects to be conveyed).
The present invention relates to a roller conveyor equipment adopted for transporting a belt across a plurality of zones.

[0002]

2. Description of the Related Art Conventionally, as this type of roller conveyor equipment, for example, an accumulation conveyor disclosed in Japanese Patent Laid-Open No. 8-217214 has been provided. In this conventional configuration, the drive belt is brought into contact with the carrier roller group from below, whereby a rotational force is applied to the carrier roller group, and the pressure wheel is lowered by the operation of the actuator. The carrier roller group is configured to be braked by contacting the carrier roller from below.

The control is performed by actuating a plurality of actuators based on the detection means detecting the articles, whereby the articles are sequentially dispensed one by one from the downstream end of the conveyor, and the articles on the upstream side are discharged. Is configured to be sequentially sent downstream.

[0004]

However, according to the above-mentioned conventional structure, a plurality of articles cannot be paid out all at once. In addition, in order to pay out multiple items at once,
It is possible to combine different pipes with various valves in between, but in this case, the valves and pipes are arranged in a complicated manner, which increases the number of man-hours required for piping work, etc. Must be secured, and it will look even worse.

In view of this, the invention according to claim 1 of the present invention is a roller conveyor that can perform the piping work easily and easily by switching from the sequential dispensing specification to the simultaneous dispensing specification or from the simultaneous dispensing specification to the sequential dispensing specification. The purpose is to provide facilities.

[0006]

In order to achieve the above-mentioned object, the roller conveyor equipment according to claim 1 of the present invention is a roller conveyor equipment which conveys articles between a plurality of zones, The zone is provided with an accumulator unit for connecting and disconnecting the conveyor drive means with respect to the roller group, a brake unit for contacting and separating with respect to the roller group, and a presence detection means having an on-off valve. The inlet side port of each on-off valve is connected to the main supply pipe side of the working fluid, an electromagnetic switching valve is provided in the most downstream zone, and a valve unit is provided in each zone except the most downstream zone. , The first valve means, the second valve means, and a switching valve for reversibly operating the accumulation unit and the brake unit are incorporated in the valve unit. , The first valve means is capable of supplying working fluid to the second valve means by opening and closing of the on-off valve in the same zone, and the second valve means is supplied with working fluid from the first valve means. At this time, the switching fluid can be supplied to the switching valve, and the auxiliary supply pipe for the switching fluid is provided with a portion of the distribution pipe from the main supply pipe to the on-off valve in the downstream zone and from the electromagnetic switching valve to the brake. It is characterized in that it can be selectively connected to the portion of the supply pipe to the unit.

Therefore, according to the first aspect of the present invention, the brake unit and the accumulator unit are reversible with respect to the roller group by switching the switching valve based on the operation of the on-off valve detected by the load detecting means. The article can be conveyed between the zones by acting on.

At this time, when the auxiliary supply pipe is connected to the portion of the distribution pipe from the main supply pipe to the on-off valve in the downstream zone, the switching fluid that always flows from the distribution pipe to the auxiliary supply pipe is Only when the first valve means is actuated through the working fluid by causing the fluid to flow through the second valve means and the opening / closing valve opening, the second valve means in the same zone is actuated to actuate the switching fluid as the switching valve. It can be fluidized and switched. By performing such an operation for each zone, the articles stopped in each zone can be sequentially transported to the zone one downstream, and thus the articles can be sequentially paid out.

When the auxiliary supply pipe is connected to the portion of the supply pipe from the electromagnetic switching valve to the brake unit, the switching fluid is supplied from the supply pipe only when the electromagnetic switching valve is operated toward the brake unit. Actuating the second valve means in all zones by causing the fluid to flow through the pipe to the second valve means, and by actuating the first valve means via the working fluid by opening the downstreammost zone opening / closing valve. By doing so, the switching fluid can be made to flow to the switching valve and switched. As a result, the group of articles stopped in each zone can be sequentially transported to the downstream zone, whereby the articles can be simultaneously paid out.

According to a second aspect of the present invention, in the roller conveyor facility according to the first aspect, the valve unit connects the valve body incorporating both valve means and the valve body of the switching valve. It is characterized by being integrally formed by.

Therefore, according to the second aspect of the present invention, the valve unit can be constructed by operating the connector. In the roller conveyor equipment according to claim 3 of the present invention, in the structure according to claim 2 described above, a cylinder chamber is formed in the valve body incorporating both valve means, and the pinton of the switching valve is located in this cylinder chamber. It is characterized in that both valve bodies are integrated.

Therefore, according to the invention of claim 3, the cylinder chamber can be formed by utilizing the abutting surfaces of the valve bodies, and the cylinder chamber is formed in the valve body incorporating both valve means. The body can also serve as a cylinder chamber forming body.

Further, in the roller conveyor equipment according to claim 4 of the present invention, in the structure according to any one of claims 1 to 3, the valve means is constituted by a low pressure priority type shuttle valve. It is characterized by being present.

Therefore, according to the invention of claim 4, the low pressure priority type shuttle valve can be incorporated into a valve unit.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the sequential payout specification of the present invention will be described below with reference to FIGS.

2 to 6, the frame body 2 of the roller conveyor equipment 1 is a pair of left and right conveyor frames 3.
And a connecting frame 4 provided between the lower parts of both conveyor frames 3, and leg members 5 are connected between the lower parts of the conveyor frames 3 and at a plurality of positions in the length direction.

Between the two conveyor frames 3, rollers 6 are provided at a number of positions in the length direction so as to be freely rotatable. That is, the group of rollers 6 is supported rotatably between the two conveyor frames 3 by arranging the hexagonal shaft portion of the roller shaft 7 in the hexagonal hole (or cutout portion) formed in the conveyor frame 3. There is. As a result, the transport path 9 is formed above the group of rollers 6.

Conveyor driving means 10 is provided in the frame body 2 and at a position on the side of one conveyor frame 3. That is, the conveyance path 9 is provided below the roller group 6.
Reversing guide wheels 11 are disposed at both ends of the unit, and a unit base 20 is disposed between the reversing guide wheels 11. An accumulator unit 25 is provided on the unit base 20 in a state where the transport path 9 is divided into a plurality of zones Z _{1 to} Z _n , and a brake unit 30 is arranged in pairs inside each accumulator unit 25. Has been done.

A box-shaped drive unit frame 12 is provided between the lower portions of both conveyor frames 3, and a motor 13 with a speed reducer is mounted on the drive unit frame 12, and a drive wheel is attached to the output shaft of the motor 13. A body 14 is provided. Further, in the vicinity of the motor 13, one conveyor frame 12 is provided with a pair of reversing guide wheels 15, and the drive frame 12 is provided with a tension guide wheel 16 whose position is adjustable.

An endless rotating body 18 composed of an endless belt for driving is hung from above over the guide wheel body 11 for reversing and the accumulator unit 25 group so as to come into contact with the roller group 6 from below. In addition to being configured, the abutment thereof is configured to transmit the rotational power. Further, it can be hung from above on the lower guide wheel group 17 and has a guide wheel body 15 for both reversing and a guide wheel body 16 for tensioning.
After being applied to the driving wheel body 14, the turning force is applied.

That is, most of the group of rollers 6 are constructed so that they can be driven and rotated by contacting the endless rotary body 18 of the conveyor drive means 10 from below. An example of the conveyor driving means 10 is configured by the above 11 to 18 and the like.

The unit base 20 is located above the connecting frame 4. And unit base 2
After the spacer 21 is disposed between 0 and the connection frame 4, the spacers 21 are joined by the joints (bolts / nuts) 22. At that time, the return path 19 of the endless rotating body 18 is determined by the distance (gap) between the unit base 20 and the connecting frame 4 which is determined by the height dimension of the spacer 21.
Is formed.

The group of rollers 6 is divided into a plurality of zones Z _{1 to} Z _n in the direction of the conveying path 9, and the conveyor driving means 10 is connected to the group of rollers 6 for each zone Z _{1 to} Z _n. The accumulation unit 25 for disconnecting is arranged.

The accumulation unit 25 is provided with an elevating frame 27 guided by elevating guide means 26 provided between the unit base 20 and an elevating frame provided between the unit base 20 and the elevating frame 27. The air actuator 28 and the upper guide wheels 29 provided at four locations (a plurality of locations) in the direction of the transport path 9 in the elevating frame 27 are configured. The upper guide wheel group 29 is configured so as to be capable of contacting the endless rotary body 18 from below.

On the inner side of each accumulation unit 25, on the side of the frame body 2, the brake units 30 that come into contact with and separate from the group of rollers 6 are arranged in pairs. The brake unit 30 and the accumulation unit 25 are configured to act reversibly on the group of rollers 6.

That is, in the direction of the transport path 9, the brake units 30 provided in each of the zones Z _{1 to} Z _n are guided by the elevating guide means 31 provided between the unit base 20 and the brake unit 30. The lifting / lowering body 32, the lifting / lowering air actuator 33 provided between the unit base 20 and the lifting / lowering body 32, and the roller 6 group provided on the lifting / lowering body 32 can be operated from below (contactable). ) Brake member 34 and the like.

The elevating body 32 includes a lateral plate portion 32a, and a pair of (a plurality of) rising portions 32b which are continuously formed in a bent shape from the left and right edge portions of the lateral plate portion 32a so as to be open at the upper portion. It is formed in a character rail shape (C-shaped frame shape). The brake member 34 is formed of rubber, for example, in a rectangular block shape. At that time, on the lower side,
A groove portion 35 that can be fitted into the rising portion 32b from above.
Are formed to be open downward and front and rear.

Here, the air actuator 28 of the accumulation unit 25 and the air actuator 33 of the brake unit 30 are reversibly moved up and down by switching operation of a switching valve (described later). An example of the accumulation unit 25 is configured by the above 26 to 29, and an example of the brake unit 30 is configured by 31 to 35 and the like.

In-zone detecting means 40 is provided in each of the zones Z _{1 to} Z _n . That is, the presence detection means 4
0 is the horizontal axis 41 on each side of the conveyor width direction.
It has a bracket body 42 which is swingable around. Here, the bracket body 42 is a Y-shaped link body in a side view, the upper two places (at least two places) thereof are formed in the mounting portions 42a and 42b, and the remaining lower one is formed.
The location is formed on the operation portion 42c. Then, a through hole 43 is formed in a central portion which is an intersecting portion of the bracket body 42, and the round shaft portion of the roller shaft 7 of the target roller 6 is externally fitted through the through hole 43 to thereby form the roller. It is formed so as to be swingable around a lateral axis 41 which is an axis.

A sensing roller 44 which can be moved up and down between the rollers 6 is mounted between the bracket bodies 42.
That is, the sensing roller 44 is rotatably mounted between the first mounting portions 42a located on the downstream side (lower side) via the horizontal shaft 45 in the conveyor width direction. A rod-shaped weight body 46 is mounted between the second mounting portions 42b located on the upstream side (hand side). At this time, the weight biasing force of the weight body 46 causes both bracket bodies 42 to swing,
The sensing roller 44 is configured to project from the conveyor transport surface 8.

An example of the presence detection means 40 is constituted by the above 41 to 46. In addition, the arrangement position of the presence detection means 40 in the direction of the conveyance path 9 in each zone Z _{1 to} Z _n is set appropriately according to the coasting of the conveyed article, etc., and is appropriately changed. It is a thing.

One (at least one) bracket body 4
An opening / closing valve 58 which is always closed is provided on the conveyor frame 3 side so as to face the operation unit 42c in FIG. 2, and the opening / closing valve 58 is an operation unit when the sensing roller 44 moves against the weight biasing force. The switching valve in the upstream zone is switched to the braking side by being operated for communication by 42c.

That is, a left and right symmetrical valve support body 50 is provided. The valve support body 50 is formed with a recess 51 that is open upward and leftward and rightward in the central portion, and has a valve support portion 52 on the upstream side. Is formed, and a connecting portion 53 is formed on the downstream side. The valve support body 50 is arranged in a state where the operating portion 42c is fitted in the recess 51, and the conveyor frame is provided by a fixture (bolt / nut) 54 that acts on the conveyor frame 3 from the connecting portion 53. It is fixed on the 3 side. Further, the valve support portion 52 has a concave shape that is opened at the upper side and the front rear side, and the fixing tool (bolt / nut) 55 after the opening / closing valve 58 is fitted therein.
It is fixed by.

At this time, the front and rear surfaces of the recess 51 are formed as a protruding stopper surface 51a and a retracting stopper surface 51b, and normally, the operating portion 42c is brought into contact with the protruding stopper surface 51a by swinging by a weight urging force. It is touched. In this state, the operation portion 42c is separated from the operating portion 59 of the opening / closing valve 58, and thus the opening / closing valve 58 is normally in the shutoff state.

In FIGS. 1, 7, and 8, the zones Z _{2 to} Z _n except the zone Z ₁ at the tip (the most downstream) are:
A valve unit 60 is provided for each. Here, the valve unit 60 is composed of two low-pressure priority type shuttle valves (an example of valve means) 62 and 72 having a common valve body 61 and one switching valve 91.

That is, two low pressure priority type shuttle valves 6
2, 72 have a pair of valve chambers 64A, 64B, 74A, 74B which are communicated with each other through communication passages 63, 73, respectively. Valve shafts 65 and 75 are slidably provided in the communication passages 63 and 73, and valve bodies 66A, 66B, 76A and 76B are provided at both ends of the valve shafts 65 and 75.

Here, the wall surfaces forming the valve chambers 64A, 64B, 74A, 74B around the openings of the communication passages 63, 73 are formed in the valve seats 67A, 67B, 77A, 77B,
For these valve seats 67A, 67B, 77A, 77B,
The valve bodies 66A, 66B, 76A, 76B are configured to be selectively contactable and separable. The valve chambers 64A, 64
B, 74A, 74B are valve bodies 66A, 66B, 76A,
It is configured such that it can communicate with the communication passages 63 and 73 through the outside of the outer periphery of 76B.

The communication passage 63 of the first low pressure priority type shuttle valve 62 is connected to the other valve chamber 74B of the second low pressure priority type shuttle valve 72 via a communication path 68. A cylinder chamber 69 that is open to the outside is formed in the valve body 61, and the communication passage 7 in the second low pressure priority type shuttle valve 72 is formed at the inner end of the cylinder chamber 69.
The communication path 78 from 3 is connected.

The first low-pressure priority shuttle valve 62 is provided with an outlet-side connector 81A that communicates with one valve chamber 64A and an inlet-side connector 81B that communicates with the other valve chamber 64B. , One valve chamber 64 through the joint flow path 82
A receiving-side connecting tool 83 communicated with A is provided. Further, the second low pressure priority type shuttle valve 72 has one valve chamber 7
An outlet side connecting tool 84 that communicates with 4A and a receiving side connecting tool 86 that communicates with one of the valve chambers 74A via a joint channel 85 are provided.

The valve body 92 of the switching valve 91 is brought into contact with the cylinder chamber 69 side of the valve bodies 61 of the low pressure priority type shuttle valves 62 and 72, and the valve bodies 61 and 9 are connected.
The two are integrated via a connecting tool (bolt / nut) 88. A receiving valve chamber 93 is formed in the valve main body 92, and the receiving valve chamber 93 is placed inside,
A pair of supply valve chambers 94A and 94B are formed separately. The receiving valve chamber 93 and both supply valve chambers 94A,
Between 94B and 94B, valve seats 95A and 95B are formed.

A valve shaft 96 is arranged so as to be inserted through the respective valve chambers 93, 94A, 94B.
Valve bodies 97A and 97B are provided which can selectively come into contact with and separate from the valve seats 95A and 95B. And valve stem 9
A piston 98 positioned in the cylinder chamber 69 is provided at one end of the valve 6, and a spring 99 for moving the piston 98 to the communication path 78 side is provided between the other end and the valve body 92.
Is provided.

The urging force of the spring 99 causes the piston 9
When 8 is moved to the connecting paths 68, 78 side, as shown in FIG. 7, the valve body 97A acts on the valve seat 95A so that the receiving valve chamber 93 and the supply valve chamber 94B on the other end side communicate with each other. Is configured to.

The merging / distributing passage 10 is connected to the switching valve 91.
1 is provided with an inlet-side connector 102 that communicates with the receiving valve chamber 93 via 1 and an outlet-side connector 103 that communicates with the merging / distributing passage 101.
4A and the brake side connecting tool 104A and the accumulation side connecting tool 104 communicated with the supply valve chamber 94B of the other end.
B and are provided. 61-104A, 104 above
An example of the valve unit 60 is configured by B and the like.

An electromagnetic switching valve 105 that performs the same operation as the switching valve 91 is provided in the zone Z ₁ at the tip (downstream). Next, the piping (air supply path) in the sequential dispensing specification will be described with reference to FIGS. 1, 7, and 8. That is, pressurized air (an example of working fluid)
The inlet side connection tool 102 of each switching valve 91 is connected in parallel to the main supply pipe 110 connected to the air supply source (not shown) side for supplying the air, and the inlet side port of the electromagnetic switching valve 105. Are connected via a distribution pipe 111. The outlet-side connector 103 that communicates with the merging / distributing passage 101 is connected to the inlet-side port of the on-off valve 58 in the same zone via the distributing pipe 112.

In each of the zones Z _{2 to} Z _n excluding the zone Z ₁ at the tip (downstream), the outlet side port of the on-off valve 58 is connected to the inlet side of the first low pressure priority type shuttle valve 62 in the same zone. It is connected to the tool 83 via a supply pipe 113. The connecting pipe 114 from the outlet-side connector 81A is the inlet-side connector 81 in the upstream zone.
Connected to B. In addition, the outlet side port of the on-off valve 58 in the zone Z ₁ at the tip (downstream) is the connecting pipe 1
Insertion side connection device 8 in the upstream zone 1 through 15
1B is connected.

Each switching valve 91 and electromagnetic switching valve 105
At the brake-side connecting member 104A, the supply pipe 116
Is connected to the air actuator 33 of the brake unit 30 in the same zone, and the accumulation side connector 104B is connected to the air actuator 28 of the accumulation unit 25 in the same zone via the supply pipe 117.

Then, the auxiliary supply pipe 12 through which pressurized air (an example of a switching fluid) flows through each of the zones Z _{1 to} Z _n.
0 is provided, and this sub-supply pipe 120 connects the outlet side connector 84 of the second low pressure priority type shuttle valve 72 and the inlet side connector 86 of the zone one upstream,
It is configured by utilizing the joint flow path 85. Sub-supply pipe 1
The downstream end of 20 is one distribution pipe 1 in the upstream zone.
It is connected to 12 via a junction connector 121. The opening / closing valve 5 in the zone Z ₁ at the tip (downstream)
The inlet port 8 is connected to the main supply pipe 110 through a distribution pipe 118.

The basic operation of the roller conveyor facility 1 described above will be described below. Roller conveyor equipment 1
, The motor 13 in the conveyor drive means 10
The endless rotating body 18 can be rotated by driving the. At that time, the endless rotating body 18 is provided with the upper guide wheels 2 of each accumulation unit 25 in the action path portion between the reversing guide wheels 15.
It passes between the connecting frame 4 and the unit base 20 while being supported and guided by the group 9 and also supported and guided by the group of lower guide wheels 17 on the return path 19.

When the endless rotating body 18 is rotated in this way, the air actuator 28 of the accumulation unit 25 is extended to raise the elevating frame 27, so that the upper guide wheel body 29 group allows the endless rotating body 18 to move. Can be raised to contact the group of rollers 6 from below. As a result, the group of rollers 6 can be driven and rotated by the endless rotating body 18, and thus the article (folding container, container, cardboard, etc.) supported by the group of rollers 6 can be transported on the transport path 9.

Further, by contracting the air actuator 28 of the accumulation unit 25 and lowering the elevating frame 27, the endless rotary body 18 is separated downward from the group of rollers 6 by lowering the group of upper guide wheels 29. You can
At this time, the air actuator 28 of the accumulation unit 25 and the air actuator 33 of the brake unit 30, which reversibly moves up and down, are extended to raise and lower the lifting body 32, whereby the brake member 34 is moved to the roller 6 group. It can abut from below. As a result, a braking force is applied to the group of rollers 6 that has been idly rotating due to the separation of the endless rotary body 18, whereby the rotation of the group of rollers 6 can be stopped and the conveyance of the article can be stopped.

Then, the article Z is conveyed by operating the accumulation unit 25, so that the zone Z at the leading end (the most downstream) is formed.
You can pay out (send out) items from ₁ . further,
By repeating the conveyance of the article by actuating the accumulation unit 25 and the stop of the article by actuating the brake unit 30, the article is intermittently conveyed across the zones Z _{1 to} Z _n on the conveyance path 9 ( It is possible to carry out sequential feeding), and as described above, sequentially from the zone Z _{1 of the} tip portion,
You can pay the goods.

Next, in each of the zones Z _{1 to} Z _n , the accumulation unit 25 based on the operation of the presence detection means 40.
The operation in the sequential payout specification will be described, including the reversible operation of the brake unit 30 and the brake unit 30.

That is, for example, when there is no article in the transport path 9, the load detecting means 40 swings the both bracket bodies 42 by the weight biasing force of the weight body 46, as shown by the solid line in FIG. Thus, the sensing roller 44 is projected from the conveyor conveyance surface 8. This protruding posture can be maintained by the operation portion 42c contacting the protruding stopper surface 51a. In this state, the operating portion 42c is separated from the operating portion 59 of the opening / closing valve 58, so that the opening / closing valve 58 is in the shutoff state.

As a result, pressurized air flowing from the main supply pipe 110 to the distribution pipe 112 via the confluence distribution passage 101 (pressurized air flowing from the main supply pipe 110 to the distribution pipe 118 in the zone Z ₁ at the tip) is provided. It will be shut off by the on-off valve 58.
No pressurized air flows to 4,115.

Therefore, as shown in FIG. 9 (a), the first low-pressure priority shuttle valve 62 is deactivated. In the second low-pressure priority shuttle valve 72, the pressurized air flowing from the distribution pipe 112 through the joining connector 121 and the auxiliary supply pipe 120 and the joint flow passage 85 flows into the valve chamber 74A.
The valve body 76A is brought into contact with the valve seat 77A to block the inflow to the communication path 78.

As a result, in the switching valve 91, the urging force of the spring 99 moves the piston 98 to the connecting passage 78 side, and as shown in FIG. 7, the valve body 97A acts on the valve seat 95A to receive the receiving valve. Chamber 93 and supply valve chamber 94 on the other end side
Communicate with B. As a result, the pressurized air from the merging / distributing path 101 is caused to flow into the air actuator 28 of the accumulation unit 25 via the supply pipe 117, and the endless rotating body 18 drives and rotates the group of rollers 6 to convey the article. It may be ready to be transported on the path 9.

Therefore, the articles supplied to the zone Z _n at the upstream end can be sequentially conveyed in each zone Z _{n to} Z ₁ . At that time, the load detecting means 40 in each of the zones Z _{n to} Z ₁ detects the article and opens the opening / closing valve 58. At this time, pressurized air is momentarily supplied to the supply pipe 113 and the communication pipe 114. The second low-pressure priority type shuttle valve 7 simply flows.
A block of 2 may be maintained.

When the conveyed article reaches the zone Z ₁ at the downstream end and is stopped by, for example, a stopper means (not shown), this article is detected by a detection means (not shown) and electromagnetically detected. The switching valve 105 is switched. As a result, the valve body 97B acts on the valve seat 95B to connect the receiving valve chamber 93 and the supply valve chamber 94A on the one end side.

As a result, the pressurized air to the air actuator 28 of the accumulation unit 25 is shut off to lower the elevating frame 27, and the upper guide wheel 29 group is lowered to move the endless rotating body 18 to the roller 6 group. It can be spaced downwards. Then, the pressurized air from the merging / distributing path 101 is caused to flow into the air actuator 33 of the brake unit 30 through the supply pipe 116, thereby raising the elevating body 32 and bringing the brake member 34 into contact with the group of rollers 6 from below. You can touch.
As a result, a braking force is applied to the group of rollers 6 that has been idly rotating due to the separation of the endless rotary body 18, whereby the rotation of the group of rollers 6 can be stopped and the conveyance of the article can be stopped.

[0060] Further, when stopping the articles in the zone Z ₁ of the downstream end, load presence detection means in the zone Z ₁ of the downstream end 4
0 swings both bracket bodies 42 against the weight biasing force of the weight body 46 so that the upper surface of the sensing roller 44 is at the same level as the conveyor conveyance surface 8 as indicated by the phantom line in FIG. As a result, the operating portion 42c comes into contact with the operating portion 59 of the opening / closing valve 58, thereby operating the opening / closing valve 58 in the communicating state.

Then, the pressurized air from the distribution pipe 118 passes through the communication pipe 115 and the first low pressure priority type shuttle valve 6 in the valve unit 60 in the zone Z ₂ one upstream.
2 flows into the other valve chamber 64B. As a result, as shown in FIG. 9B, the valve body 66B is brought into contact with the valve seat 67B, and the one valve chamber 64A is connected to the second low pressure priority type shuttle via the communication passage 63 and the communication passage 68. The other valve chamber 7 of the valve 72
Connect to 4B. The pressurized air is connected to the communication pipe 114.
Through the valve units 60 in the upstream zones Z _{3 to} Z _n , and each first low pressure priority type shuttle valve 62.
Operate in the same way.

In this state, when the next article is conveyed to the upstream zone Z ₂ and the load detecting means 40 is detected and operated, the pressurized air from the distribution pipe 112 is supplied.
3 into the valve chamber 64A of the first low-pressure priority shuttle valve 62 in the same zone Z ₂ . As a result, as shown in (c) of FIG.
3, the second low pressure priority type shuttle valve 7 via the connecting path 68
2 flows into the other valve chamber 74B.

Therefore, the second low pressure priority type shuttle valve 7
2, the valve body 76B is brought into contact with the valve seat 77B to shut off the other valve chamber 74B, and the one valve chamber 74A is cut off.
Through the communication passage 73 and the communication passage 78.
Communicate with. At this time, as described above, the auxiliary supply pipe 1
20, the pressurized air flowing through the combined passage 85 and the valve passage 74A flows into the valve chamber 74A, so that the pressurized air flows into the cylinder chamber 69 through the communication passage 73 and the communication passage 78.

As a result, in the switching valve 91, the piston 98 is moved against the biasing force of the spring 99, and the valve body 97B at the other end is acted on the valve seat 95B, so that the receiving valve chamber 93 and the one end side. It communicates with the supply valve chamber 94A. As a result, the air actuator 2 of the accumulation unit 25
The pressurizing air to 8 is cut off to lower the elevating frame 27, and the group of upper guide wheels 29 can be lowered to separate the endless rotating body 18 downward from the group of rollers 6.

Then, the pressurized air from the merging / distributing passage 101 is caused to flow into the air actuator 33 of the brake unit 30 through the supply pipe 116, thereby raising the elevating body 32 and moving the brake member 34 to the roller 6 group. It can abut from below. By such an operation, a braking force is applied to the group of rollers 6 that has been idly rotating due to the separation of the endless rotating body 18,
Thus, the rotation of the group of rollers 6 can be stopped to stop the conveyed article in the upstream zone Z ₂ . Incidentally, the article has been conveyed one after another, in the same manner as described above, sequentially, it may stop upstream of zone Z ₃ to Z _n.

Next, as described above, each zone Z ₁
Illustrating sequentially paid out action articles stopped (storage) in to Z _n. First, the electromagnetic switching valve 105 provided in the zone Z ₁ at the downstream end is switched by a payout signal. As a result, the supply of the pressurized air to the air actuator 33 of the brake unit 30 is cut off, and the pressurized air is caused to flow into the air actuator 28 of the accumulation unit 25. Can be given and paid out.

By this payout, the zone Z at the downstream end
_The presence detection means 40 corresponding to ₁ is not detected, and the on-off valve 58 is shut off. This deactivates the first low-pressure priority shuttle valve 62 and the second low-pressure priority shuttle valve 72 in the upstream zone Z ₂ .
Will block the pressurized air from flowing into the communication path 78.

As a result, the upstream zone Z ₂ is in a state where the article can be conveyed, and thus the article is moved to the zone Z ₁ at the downstream end.
Transport to. Article and carried into the zone Z ₁ of the downstream end, in the same manner as described above, is stopped in the zone Z ₁ of the downstream end. As a result, the presence detection means 40 corresponding to the one upstream zone Z ₂ becomes non-detected and the on-off valve 58 is shut off. Thereafter, the same operation as described above is performed.

That is, the articles stopped in each of the zones Z _{2 to} Z _n can be sequentially fed one by one to the downstream zones Z _{1 to} Z _n-1 . By the above operation, the articles stopped on the transport path 9 can be sequentially paid out.

Next, in the present invention, the piping (air supply path) in the simultaneous dispensing specification will be described with reference to FIGS. That is, the difference from the pipe in the sequential delivery specification described above is that the downstream end of the auxiliary supply pipe 120 provided over each zone Z _{1 to} Z _n is the distribution pipe 1
12 is not connected to the tip (downstream)
It is connected to the portion of the supply pipe 116 from the electromagnetic switching valve 105 in the zone Z ₁ of FIG.

Next, in each of the zones Z _{1 to} Z _n , the accumulation unit 25 based on the operation of the presence detection means 40.
The operation of the simultaneous dispensing specification will be described, including the reversible operation of the brake unit 30 and the brake unit 30.

That is, for example, when there is no article in the conveyance path 9, the presence detection means 40 becomes non-detection as shown by the solid line in FIG. 5, so that the on-off valve 58 is in the closed state. As a result, the opening / closing valve 58 is provided for the pressurized air flowing from the main supply pipe 110 to the distribution pipe 112 via the merge distribution passage 101 (the pressurized air flowing from the main supply pipe 110 to the distribution pipe 118 in the zone Z ₁ at the tip). Will be cut off by the supply pipe 113 and the communication pipe 114,
No pressurized air flows into 115.

Therefore, as shown in FIG.
The first low pressure priority shuttle valve 62 is deactivated. Further, since the electromagnetic switching valve 105 is also connected to the accumulation unit 25 side and pressurized air does not flow in the auxiliary supply pipe 120, the second low pressure priority type shuttle valve 72 is also deactivated.

As a result, in the switching valve 91, the pressurized air from the merging / distributing passage 101 is supplied to the air actuator 28 of the accumulation unit 25 through the supply pipe 117.
Then, the endless rotating body 18 drives and rotates the group of rollers 6 so that the article can be conveyed on the conveyance path 9.

Therefore, the articles supplied to the zone Z _n at the upstream end can be sequentially conveyed in each zone Z _{n to} Z ₁ . At that time, the load detecting means 40 in each of the zones Z _{n to} Z ₁ detects the article and opens the opening / closing valve 58. At this time, pressurized air is momentarily supplied to the supply pipe 113 and the communication pipe 114. The second low-pressure priority type shuttle valve 7 simply flows.
Deactivation of 2 may be maintained.

When the conveyed article reaches the zone Z ₁ at the downstream end and is stopped by, for example, the stopper means (not shown), this article is detected by the detecting means (not shown) and electromagnetically detected. The switching valve 105 is switched. As a result, the valve body 97B acts on the valve seat 95B to connect the receiving valve chamber 93 and the supply valve chamber 94A on the one end side.

As a result, the pressurized air to the air actuator 28 of the accumulation unit 25 can be shut off, and the endless rotating body 18 can be separated downward from the group of rollers 6. Then, the pressurized air from the confluent distribution path 101 is supplied to the supply pipe 1
The brake member 34 can be brought into contact with the group of rollers 6 from below by causing the air to flow into the air actuator 33 of the brake unit 30 via 16. As a result, a braking force is applied to the group of rollers 6 that has been idly rotating due to the separation of the endless rotary body 18, whereby the rotation of the group of rollers 6 can be stopped and the conveyance of the article can be stopped.

At this time, the pressurized air flowing through the supply pipe 116 flows to the sub-supply pipe 120 via the merging connector 122, so that the second low pressure priority type shuttle valve 72 is connected from the sub-supply pipe 120 to the confluent passage 85. The pressurized air that flows into the valve chamber 74A causes the valve body 76A to abut against the valve seat 77A and shuts off the inflow to the communication path 78. Further, when stopping the articles in the zone Z ₁ of the downstream end, load presence detector 40 in the zone Z ₁ of the downstream end, and test stimulus as shown in phantom lines in FIG. 5, thereby communicating the on-off valve 58 Activate the state.

Then, the pressurized air from the distribution pipe 118 passes through the communication pipe 115 and the first low pressure priority type shuttle valve 6 in the valve unit 60 in the zone Z ₂ one upstream.
2 flows into the other valve chamber 64B. As a result, as shown in FIG. 12B, the valve body 66B is brought into contact with the valve seat 67B, and the one valve chamber 64A is connected to the second low pressure priority type shuttle via the communication passage 63 and the communication passage 68. The other valve chamber 7 of the valve 72
Connect to 4B. The pressurized air is connected to the communication pipe 114.
Through the valve units 60 in the upstream zones Z _{3 to} Z _n , and each first low pressure priority type shuttle valve 62 is similarly operated.

In this state, when the next article is conveyed to the upstream zone Z ₂ and the in-load detecting means 40 is detected and operated, the pressurized air from the distribution pipe 112 is supplied.
3 into the valve chamber 64A of the first low-pressure priority shuttle valve 62 in the same zone Z ₂ . As a result, as shown in FIG. 12C, the pressurized air flows into the other valve chamber 74B of the second low pressure priority shuttle valve 72 through the communication passage 63 and the communication passage 68.

As a result, the second low pressure priority type shuttle valve 7
2, the valve body 76B is brought into contact with the valve seat 77B to shut off the other valve chamber 74B, and the one valve chamber 74A is cut off.
Through the communication passage 73 and the communication passage 78.
Communicate with. At this time, as described above, the auxiliary supply pipe 1
20, the pressurized air flowing through the combined passage 85 and the valve passage 74A flows into the valve chamber 74A, so that the pressurized air flows into the cylinder chamber 69 through the communication passage 73 and the communication passage 78.

As a result, in the switching valve 91, the piston 98 is moved against the urging force of the spring 99 so that the receiving valve chamber 93 and the supply valve chamber 94A on the one end side communicate with each other. As a result, the pressurized air to the air actuator 28 of the accumulation unit 25 is shut off, and the endless rotating body 18
Can be spaced downward from the group of rollers 6.

Then, the pressurized air from the merging / distributing path 101 is caused to flow into the air actuator 33 of the brake unit 30 through the supply pipe 116, whereby the brake member 3
4 can be brought into contact with the group of rollers 6 from below. As a result, a braking force is applied to the group of rollers 6 idled by the separation of the endless rotary body 18, thereby stopping the rotation of the group of rollers 6,
The conveyed articles may be stopped in the upstream zone Z ₂ . Incidentally, the article has been conveyed one after another, in the same manner as described above, sequentially, it may stop upstream of zone Z ₃ to Z _n.

Next, as described above, each zone Z ₁
Stop to Z _n a (storage) is allowed article describing the operation to pay out all at once. First, the electromagnetic switching valve 105 corresponding to the zone Z ₁ at the downstream end is switched by the payout signal. As a result, the supply of the pressurized air to the air actuator 33 of the brake unit 30 is cut off, and the pressurized air is caused to flow into the air actuator 28 of the accumulation unit 25. Can be given and paid out.

At the same time, pressurized air is made to flow into the auxiliary supply pipe 120 via the merging connector 122, so that in the second low-pressure priority shuttle valve 72 in each of the upstream zones Z _{2 to} Z _n , From the auxiliary supply pipe 120 to the joint flow path 85
Pressurized air will flow to.

[0086] When dispensing the articles from the zone Z ₁ of the downstream end as described above, load presence detection means 40 of the zone Z ₁ of the downstream end opening and closing valve 58 in a non-detection will be cut off, following Supply pipe 113 and communication pipes 114 and 115
No pressurized air flows into the. Therefore, as shown in (d) of FIG. 12, the first low pressure priority shuttle valve 62 in each of the upstream zones Z _{2 to} Z _n becomes inoperative. At this time, the pressurized air flowing from the auxiliary supply pipe 120 to the joint passage 85 flows into the valve chamber 74A, so that the valve body 76A is brought into contact with the valve seat 77A to block the inflow to the communication passage 78.

As a result, in each of the upstream zones Z _{2 to} Z _n , the switching valve 91 does not switch and the pressurized air is kept flowing into the air actuator 28 of the accumulation unit 25. To impart a conveying force to the article. As a result, the group of articles stopped in each of the zones Z _{2 to} Z _n can be sequentially conveyed to the downstream zone, whereby the group of articles can be simultaneously paid out.

In this way, the opening / closing valve 58 and the valve unit 60 are
The arrangement of etc. remains the same, and the piping is the auxiliary supply pipe 12
Changing the connection position at the downstream end at 0 and the others remain the same. Therefore, switching from sequential dispensing specifications to batch dispensing specifications or switching from batch dispensing specifications to sequential dispensing specifications simplifies the piping work. Easy to do.

In the above-described embodiment, each pipe may be made of metal, resin, rubber or the like, or may be a combination of these. In the above-described embodiment, the pipe configuration of batch delivery specification (Fig. 10) and the pipe configuration of sequential delivery specification (Fig. 1) are shown, but this is the pipe configuration of batch delivery specification on the downstream side (Fig. 10), and a combination of piping configurations in which the upstream side sequentially dispenses the piping configuration (FIG. 1) is also possible. According to this, after the articles are sequentially conveyed from the upstream side to the downstream side, the article group on the downstream side can be paid out all at once.

In the above-described embodiment, the valve unit 60
As an example, a configuration is shown in which a valve body 61 incorporating both low-pressure priority type shuttle valves 62 and 72 and a valve body 92 of a switching valve 91 are integrated by a connecting tool 88. The valve body of the shuttle valve 62 and the valve body of the second low-pressure priority shuttle valve 72 are separated, and the valve body and the valve body 92 of the switching valve 91 are integrated by a connector 88. May be. In addition, the valve body 6
1 and the valve body 92 may be integrally formed.

In the above-described embodiment, the structure in which the cylinder chamber 69 is formed in the valve main body 61 incorporating the low pressure priority type shuttle valves 62 and 72 is shown, but this is the valve main body 92 of the switching valve 91. A configuration in which a cylinder chamber is formed may be used.

In the above-mentioned embodiment, the valve means is composed of the low pressure priority type shuttle valves 62 and 72 respectively, but the valve means may be a combination of a plurality of on-off valves. May be.

[0093]

According to the first aspect of the present invention described above, the brake unit and the accumulator unit are arranged in the roller group by switching the switching valve based on the operation of the on-off valve detected by the load detecting means. It is possible to smoothly and reliably carry out the intermittent transport of the article on the transport path by reversibly acting it.

At this time, by connecting the auxiliary supply pipe to the portion of the distribution pipe from the main supply pipe to the on-off valve in the downstream zone, the switching fluid that always flows from the distribution pipe to the auxiliary supply pipe is The second valve means in the same zone is operated to switch the switching fluid to the switching valve only when the first valve means is operated via the working fluid by the opening and closing valve opening and closing operation. It can be fluidized and switched. By performing such an operation for each zone, the articles stopped in each zone can be sequentially transported to the zone one downstream, and thus the articles can be sequentially paid out.

By connecting the auxiliary supply pipe to the portion of the supply pipe from the electromagnetic switching valve to the brake unit, the switching fluid is supplied from the supply pipe only when the electromagnetic switching valve is operated to the brake unit side. By operating the first valve means via the working fluid by allowing the second valve means to flow through the pipe and opening the downstreammost zone opening / closing valve, the second valve means in all zones is operated. Then, the switching fluid is caused to flow through the switching valve and can be switched. As a result, the group of articles stopped in each zone can be sequentially transported to the downstream zone, and the articles can be collectively paid out.

In this way, the arrangement of the on-off valve, the valve unit, etc. is unchanged, and the piping is changed only by changing the connection position of the downstream end of the auxiliary supply piping, and the others are unchanged. Switching to the simultaneous dispensing specifications or switching from the simultaneous dispensing specifications to the sequential dispensing specifications can be performed easily and easily by reducing the man-hours of the piping work. Moreover, by adopting the valve unit, it is possible to reduce the installation space and make it look good.

According to claim 2 of the present invention described above,
The valve unit can be easily constructed by operating the connector. According to the third aspect of the present invention described above, the cylinder chamber can be easily formed by utilizing the contact surfaces of both valve bodies, and the cylinder chamber is formed in the valve body incorporating both valve means. The valve body can also serve as a cylinder chamber forming body, so that the switching valve can be made short, that is, the entire valve unit can be made compact.

Further, according to claim 4 of the present invention described above, the entire valve unit incorporating both low-pressure priority type shuttle valves can be made compact.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and is an explanatory view of piping in sequential payout use of a roller conveyor facility.

FIG. 2 is a partially cutaway plan view of the roller conveyor facility.

FIG. 3 is a partially cutaway side view of the roller conveyor facility.

FIG. 4 is a partially cutaway plan view of the presence detection means portion in the roller conveyor facility.

FIG. 5 is a partially cutaway side view of the presence detection means portion in the roller conveyor facility.

FIG. 6 is a vertical sectional front view of a main part of the roller conveyor facility.

FIG. 7 is a vertical cross-sectional view of a valve unit portion when the roller conveyor equipment is used for sequential dispensing.

FIG. 8 is an explanatory diagram of a main part of piping in the roller conveyor facility.

FIG. 9 is an operation explanatory view of a valve unit portion in the sequential payout use of the roller conveyor facility.

FIG. 10 is an explanatory diagram of pipes in a simultaneous payout use of the roller conveyor facility.

FIG. 11 is a vertical cross-sectional view of a valve unit portion when the roller conveyor facility is used for sequential dispensing.

FIG. 12 is an operation explanatory view of a valve unit portion in the sequential payout use of the roller conveyor facility.

[Explanation of symbols]

1 Roller Conveyor Equipment 2 Frame Main Body 6 Roller 8 Conveyor Conveying Surface 9 Conveying Path 10 Conveyor Driving Means 13 Motor 18 Endless Rotating Body 20 Unit Base 25 Accumulation Unit 27 Elevating Frame 28 Air Actuator 30 Brake Unit 32 Elevating Body 33 Air Actuator 34 Brake Member 40 In-load detection means 42 Bracket body 44 Sensing roller 50 Valve support body 58 Opening / closing valve 60 Valve unit 61 Valve body 62 First low pressure priority type shuttle valve (first valve means) 63 Communication path 68 Communication path 69 Cylinder chamber 72 Second low-pressure priority type shuttle valve (second valve means) 73 Communication passage 78 Communication passage 82 Joint passage 85 Joint passage 88 Joint 91 Switching valve 92 Valve body 96 Valve shaft 98 Piston 99 Spring 101 Joint distribution passage 105 Electromagnetic switching Valve 110 Main supply pipe 111 Distribution Pipe 112 Distribution Pipe 113 Supply Pipe 114 Communication Pipe 115 Communication Pipe 116 Supply Pipe 117 Supply Pipe 118 Distribution Pipe 120 Sub-Supply Pipe 121 Merging Connector 122 Merging Connector Z _{1 to} Z _n Zone

Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F15B 11/20 F15B 11/20 A (72) Inventor Hiroshi Kumazawa 2-250 Oji, Komaki City, Aichi Prefecture (72) Inventor Takashi Fujita 1225 Nakazaiji, Gino-cho, Gamo-gun, Shiga F-Term inside Daifuku Shiga Works (reference) 3F027 AA03 CA01 DA04 EA01 FA12 3F033 BB01 BB19 BC03 BC07 CA01 3F081 AA01 BD11 CC12 EA07 FB77 3BB019A12 CC18 DB43 EE14 GG03 JJ07

Claims (4)

[Claims] 1. A roller conveyor facility for conveying an article between a plurality of zones, wherein each zone has an accumulation unit for connecting / disconnecting a conveyor driving means to / from the roller group. A brake unit that acts in abutment and separation and a presence detection means having an on-off valve are respectively provided, and the inlet side port of each on-off valve is connected to the main supply pipe side of the working fluid and is located in the most downstream zone. An electromagnetic switching valve is provided, and a valve unit is provided in each zone except the most downstream zone. The valve unit has a first valve means, a second valve means, an accumulation unit and a brake unit. And a switching valve that reversibly acts on the first valve means, and the first valve means can supply the working fluid to the second valve means by opening and closing the on-off valve in the same zone. And the second valve means is
When the working fluid is supplied from the first valve means, the switching fluid can be supplied to the switching valve, and the auxiliary supply pipe of the switching fluid is connected to the on-off valve from the main supply pipe in one downstream zone. A roller conveyor facility characterized in that it is configured so that it can be selectively connected to a portion of a distribution pipe and a portion of a supply pipe from an electromagnetic switching valve to a brake unit. 2. The roller conveyor equipment according to claim 1, wherein the valve unit is configured by integrating a valve main body incorporating both valve means and a valve main body of a switching valve with a connecting tool. 3. A cylinder body is formed in a valve body incorporating both valve means, and a pinton of a switching valve is located in the cylinder chamber so that both valve bodies are integrated. 2. Roller conveyor equipment described in 2. 4. The valve means is constituted by a low pressure priority type shuttle valve, respectively.
The roller conveyor equipment according to any one of 1.