JP2018203423A - Conveyance system and suction conveying conveyor - Google Patents

Abstract

To provide a conveyance system that is easily installed with simple facility while accurately enabling eliminating a conveyed article to be eliminated, and reducing loss of a conveyed article that is eliminated; and to provide a suction conveying conveyor thereof.SOLUTION: A suction conveying conveyor 100 comprises a suction belt-like body 110, and a suction unit 120 for suctioning a conveyed article from a back surface of a conveyance surface. The suction unit 120 comprises an opening face 121 facing the back surface of the conveyance surface, and a negative pressure space 122 that gives negative pressure to the suction belt-like body 110 from the opening face 121. The opening face 121 comprising a plurality of individual opening regions 132 comprises a plurality of negative pressure control units 130 each for independently controlling the negative pressure given from the respective individual opening regions 132.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a transport system having an upstream conveyor for transporting an object to be transported and a suction transport conveyor provided downstream of the upstream conveyor, and in particular, used for a process of washing and drying a bottomed cylindrical can. The present invention relates to a transport system and a suction transport conveyor suitable for performing the above.

In the can manufacturing process, the can body that has been processed into a bottomed cylinder by drawing-ironing or the like is then sent to the painting process. Prior to this, the can can be transferred while being transferred on the net conveyor in the washing and drying processes. The coolant adhering to the inner and outer surfaces of the body is washed with a chemical shower, and then the chemical remaining on the inner and outer surfaces of the can body is washed away with a rinse water shower and then dried.
In the cleaning and drying process, since the can bottom is transported in the form of the upper surface, the coolant and the washer chemical solution adhering to the inner and outer surfaces of the can fall without staying on the inner and outer surfaces of the can. In can cleaning, the can body is conveyed in an inverted state on a net conveyor.
If a fall can occurs during this cleaning and drying process, cleaning with a chemical shower or rinse water shower becomes insufficient, and if this fallen can body (fall can) is sent to the next process (painting process) In order to cause a problem of coating film peeling, a suction conveyance conveyor that sucks cans from above is disposed downstream of the conveyor in the cleaning process, and the falling cans are not dropped to flow out to the drying process.

However, since the cans are transported in a multi-row, dense state on the net conveyor, if a fall can occurs in the middle of the cleaning process, when the can body falls or during the subsequent transport process, Rinse water containing the remaining cleaning chemicals and chemical components may scatter around and adhere to the inner and outer surfaces of surrounding can bodies that are not collapsed.
If rinsing water containing cleaning chemicals or chemical components scatters and adheres, adhesion of the coating film in the subsequent outer surface coating printing process and inner surface spray coating process will decrease and cause coating film peeling. It is necessary to surely remove and remove the can body around the fallen can that may be scattered or adhered.
The suction conveyor can drop only the cans from the structure, and can be discharged and removed from the line, but the surrounding cans do not fall unless they fall down, so cleaning chemicals and chemical components are placed on the surface of the surrounding cans Even if the rinse water contained is scattered and adhered, it cannot be removed.

Therefore, in the past, when a fall can was detected by the fall can sensor installed just before the suction conveyor, the person in charge of the process recognized the occurrence of the fall with a buzzer, Patlite (registered trademark), etc. linked to the fall can sensor. The person in charge of the process immediately rushed to the exit conveyor and manually removed the cans around the cans.
In this work, if all the cans that should be rejected cannot be removed, and if they flow out to the subsequent process (painting process), the film will peel off with a high probability. It was work.
In addition, it is necessary to interrupt the work even during another work and rush to the exit conveyor, which is the place where the can body around the canister is removed, or because it is done manually while the line is operating, There was also a problem.
In order to automate this, when a fall can is detected in the cleaning process, the cans around the fall can are eliminated by swinging the exit conveyor (unloading conveyor 33) downward at the timing when the fall can passes. Is known (see Patent Document 1, etc.).

Japanese Patent No. 5103317

In the means known in Patent Document 1, since the outlet conveyor (the carry-out conveyor 33) is swung downward, a large amount of can bodies around the overturned cans are excluded, and thus there is a large loss of normal can bodies.
Moreover, in order to swing the exit conveyor, it is necessary to provide a large and special facility, and in order to employ it in a conventional line, the burden is large in terms of space and cost.
The present invention solves such problems, and can accurately eliminate the objects to be removed, reduce the loss of objects to be eliminated, and can be easily introduced with simple equipment. An object of the present invention is to provide a simple transport system and a suction transport conveyor.

The transport system according to the present invention is a transport system having an upstream conveyor for transporting a transported object and a suction transport conveyor provided downstream of the upstream conveyor, wherein the suction transport conveyor is an upper part of the transported object. A suction band having a transport surface for sucking the liquid, and a suction unit for sucking an object to be transported from the back surface of the transport surface of the suction belt. The suction unit is disposed on the back surface of the transport surface of the suction belt. An opening surface facing each other, a negative pressure space for applying a negative pressure to the suction belt from the opening surface, the opening surface has a plurality of individual opening regions, and the suction conveying conveyor is the individual By providing a plurality of negative pressure control units that independently control the negative pressure applied to the suction belt from the opening region, the above-described problems are solved.
A suction transfer conveyor according to the present invention is a suction transfer conveyor having a suction band having a transfer surface for sucking a transferred object and a suction unit for sucking the transfer object from the back surface of the transfer surface of the suction band. The suction unit has an opening surface facing the back surface of the transport surface of the suction band, and a negative pressure space that applies a negative pressure to the suction band from the opening surface, the opening surface, The above-mentioned problem is solved by further comprising a plurality of negative pressure control units each having a plurality of individual opening regions and independently controlling the negative pressure applied to the suction band from the individual opening regions. is there.

According to the transport system and the suction transport conveyor of the present invention, the suction unit has an opening surface facing the back surface of the transport surface of the suction band, and a negative pressure that applies a negative pressure to the suction band from the opening surface. By further including a plurality of negative pressure control units that have a space, the opening surface has a plurality of individual opening regions, and independently controls the negative pressure applied to the suction band from the individual opening regions, Since the suction force of only the portion facing each individual opening region of the suction belt-like body portion can be controlled, it is possible to accurately eliminate the object to be excluded and reduce the loss of the object to be excluded it can.
In addition, since the object to be removed can be accurately excluded only by controlling the negative pressure by the negative pressure control unit, it is easy to introduce the conventional equipment with simple equipment.

According to the structure which concerns on Claim 2, since the negative pressure control unit is arrange | positioned in the negative pressure space of a suction unit, there is no increase in space with respect to the conventional equipment, and introduction to the conventional equipment is possible. It is even easier.
According to the configuration of the third aspect, the negative pressure control unit includes an individual box that forms an individual space corresponding to the individual opening area, and a shutter that is provided in the individual box so as to partition the individual space and the negative pressure space. By having the members, the negative pressure can be controlled only by the operation of the shutter, and the equipment becomes simpler.
According to the configuration of the fourth aspect, the shutter member is formed so as to be openable and closable by the hinge, and the negative pressure control unit has the actuator disposed in the negative pressure space for opening and closing the shutter member, thereby further simplifying. Equipment.
According to the structure which concerns on Claim 5, the to-be-conveyed object which should be excluded can be divided into a small number unit by the width direction by providing the several separate opening area | region in the width direction of a suction strip | belt-shaped body, and it is excluded The loss of objects can be further reduced.

According to the structure which concerns on Claim 6, a to-be-conveyed object is a can body, and an upstream conveyor and a suction conveyance conveyor are comprised so that a some can body can be conveyed in the width direction, a fall can and surrounding It can be used in the step of removing the can body, and more preferably can be used in the step of washing and drying the bottom cylindrical can body.
According to the structure which concerns on Claim 7, an upstream conveyor has a state detection means to detect the state of a to-be-conveyed object, and a negative pressure control unit makes the negative pressure of an individual opening area | region according to the output of a state detection means. By individually controlling, it is possible to more accurately exclude the objects to be conveyed.
According to the structure which concerns on Claim 8, a to-be-conveyed object is a can body, a state detection means is a fall can detection means which detects the fallen can body, and a negative pressure control unit is the circumference | surroundings of the fallen can body When the predetermined number of cans reach the individual opening area, the suction can be released from the individual opening area, so that it can be used in the step of removing the cans and the surrounding cans. More preferably, the can body around the fall can can be reliably removed in the process of washing and drying the bottom cylindrical can body.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing of the conveyance system which concerns on 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. Side surface explanatory drawing of the suction conveyance conveyor which concerns on 1st Embodiment of this invention.

As schematically shown in FIG. 1, the conveyance system 10 according to an embodiment of the present invention includes an upstream conveyor 20 provided in the cleaning device 21 and a suction conveyance conveyor provided downstream thereof in the can manufacturing process. The can body C, which is processed into a bottomed cylindrical shape, which is an object to be conveyed, is continuously transferred from the upstream conveyor 20 to the downstream conveyor 30 provided in the drying device 31, while the can The CT is configured to drop.
As shown in FIGS. 2 and 3, the suction conveyance conveyor 100 has a suction band 110 having a conveyance surface for sucking the upper portion of the can C, and a suction for sucking the can C from the back surface of the conveyance surface of the suction band 110. Unit 120.
More specifically, the suction belt 110 is a belt provided with a plurality of net-like net belts or small holes, and can be ventilated on the conveyance surface side and the back surface. The suction unit 120 can pass through the suction belt 110 due to negative pressure. By sucking the air in C, the transport surface of the suction belt 110 adsorbs the upper part of the can body C.
Further, on the downstream side of the cleaning device 21 of the upstream conveyor 20, a falling can sensor 40 for detecting the falling can CT which is a state detecting means is provided.
The suction unit 120 has an opening surface 121 that faces the back surface of the conveyance surface of the suction belt 110 and a negative pressure space 122 that applies a negative pressure to the suction belt 110 from the opening surface 121.
The opening surface 121 has a plurality of individual opening regions 132, and the negative pressure applied from the individual opening regions 132 to the suction belt 110 is independently controlled by the negative pressure control unit 130.

The negative pressure control unit 130 is disposed in the negative pressure space 122 of the suction unit 120, and includes an individual box 131 that forms an individual space 133 corresponding to the individual opening region 132, and the individual space 133 and the negative pressure space 122. It has a shutter member 134 provided in the individual box 131 so as to partition, and an actuator 136 composed of a fluid pressure cylinder that opens and closes the shutter member 134.
A plurality of individual opening regions 132 are provided in the width direction of the suction belt 110, and an individual box 131, a shutter member 134, and an actuator 136 that form an individual space 133 are provided corresponding to each.
As shown in FIG. 3, a weak negative pressure space 140 independent from the negative pressure space 122 is provided on the upstream end side and the downstream end side.
In these, the can body C is smoothly transferred by statically setting a certain section from the inlet and outlet of the suction conveyance conveyor 100 to a suction force weaker than the negative pressure space 122.

In this embodiment, the individual box 131 is provided so as to form individual spaces 133 corresponding to the plurality of individual opening regions 132 in the width direction, and the shutter member 134 provided in each of the individual boxes 131 is centered on the hinge 135. It is provided to rotate and open and close.
The shutter member 134 is opened and closed by an actuator 136 disposed in the negative pressure space 122. Normally, the individual space 133 communicates with the negative pressure space 122 in a state where the shutter member 134 is opened, and the opening surface 121 is individually opened. The same suction force including the opening region 132 is applied to the suction belt 110.
When the shutter member 134 is closed by the actuator 136, negative pressure does not reach the closed individual space 133, and the suction force of the suction band 110 decreases or disappears in the corresponding individual opening region 132.
In addition, since the part except the structure which concerns on the separate opening area | region 132 and the negative pressure control unit 130 may be a well-known structure, detailed description is abbreviate | omitted.

The operation of the transport system 10 according to the present embodiment as described above will be described.
A large number of can bodies C are aligned, and the inside of the cleaning device 21 is conveyed by the upstream conveyor 20 with the opening facing downward.
On the downstream side of the cleaning device 21 of the upstream conveyor 20, a falling can sensor 40 for detecting the falling can CT is disposed, and for the large number of cans C that have come out of the cleaning device 21, Existence and position are detected.
The cans C transported by the upstream conveyor 20 are sucked at the upper part by the downstream suction transport conveyor 100 in an aligned state and continuously transported toward the downstream conveyor 30 provided in the drying device 31. .

When the fall can CT is present, the fall can CT is not sucked by the suction conveyance conveyor 100, and therefore falls down from the most downstream side of the upstream conveyor 20 and is eliminated.
Further, since the position of the fall can CT is detected by the fall can sensor 40, the can body C around the position where the fall can CT exists among the can bodies C conveyed by the suction conveyance conveyor 100 is an individual opening region. At the timing when the pressure reaches 132, the negative pressure control unit 130 is actuated and dropped downward to be eliminated.
The individual opening area 132 to be operated is set to a minimum number in which the cans C which may be scattered and attached with a chemical solution or the like are surely excluded around the position where the widthwise fall can CT exists. Loss of the can body C to be eliminated can be reduced.
For example, when the canister CT exists in the vicinity of the boundary area between the individual opening areas 132, the negative pressure control units of the plurality of adjacent individual opening areas 132 in the vicinity of the boundary area may be operated.
In rare cases, the fall can CT is sandwiched between the surrounding can bodies C and does not fall downward from the most downstream side of the upstream conveyor 20, but in this embodiment, the operation of the negative pressure control unit 130 causes the surrounding can body C When dropping the container, the fall can CT is surely dropped.

The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment.
For example, in the illustrated embodiment, the individual opening regions 132 are provided side by side in the width direction, but a plurality of individual opening regions 132 may also be arranged in the transfer direction.
Moreover, you may arrange | position the individual opening area | region 132 of a position which is different in a transfer direction in zigzag form.
Further, the shutter member 134 may be one that opens and closes in a sliding manner. As long as the individual member 133 and the negative pressure space 122 can be communicated and closed, the shutter member 134 may be a general member such as an opening / closing valve. Fluid control means may be used.
Further, if the suction and conveyance and dropping of the can body C can be controlled in the individual opening region 132, the individual box 131 forming the individual space 133 may be formed extremely thin immediately above the suction belt 110, and the shutter member 134 may be directly It may be in contact with the suction belt 110.
Conversely, the individual box 131 that forms the individual space 133 may be one in which the upper part of the individual opening region 132 in the entire negative pressure space 122 is partitioned by a partition wall or the like.

DESCRIPTION OF SYMBOLS 10 ... Conveyance system 20 ... Upstream conveyor 21 ... Cleaning apparatus 30 ... Downstream conveyor 31 ... Drying apparatus 40 ... Inverter sensor (state detection means)
DESCRIPTION OF SYMBOLS 100 ... Suction conveyance conveyor 110 ... Suction belt-like body 120 ... Suction unit 121 ... Opening surface 122 ... Negative pressure space 130 ... Negative pressure control unit 131 ... Individual box 132 ... Individual opening area 133 ... Individual space 134 ... Shutter member 135 ... Hinge 136 ... Actuator 140 ... Low negative pressure space C ... Can body (conveyed object)
CT ・ ・ ・ Tumble can

Claims (9)

A transport system having an upstream conveyor for transporting an object to be transported and a suction transport conveyor provided downstream of the upstream conveyor,
The suction conveyance conveyor has a suction band-like body having a conveyance surface for sucking an upper portion of the object to be conveyed, and a suction unit for sucking the object to be conveyed from the back surface of the conveyance surface of the suction band-like body,
The suction unit has an opening surface facing the back surface of the transport surface of the suction belt, and a negative pressure space that applies a negative pressure to the suction belt from the opening surface;
The opening surface has a plurality of individual opening regions;
The transport system, wherein the suction transport conveyor has a plurality of negative pressure control units that independently control the negative pressure applied to the suction belt from the individual opening region.   The transport system according to claim 1, wherein the negative pressure control unit is disposed in a negative pressure space of the suction unit.   The negative pressure control unit includes an individual box that forms an individual space corresponding to the individual opening region, and a shutter member that is provided in the individual box so as to partition the individual space and the negative pressure space. The conveyance system according to claim 1 or 2, characterized by the above-mentioned. The shutter member is formed to be openable and closable by a hinge,
The transport system according to claim 3, wherein the negative pressure control unit includes an actuator disposed in the negative pressure space for opening and closing the shutter member.   5. The transport system according to claim 1, wherein a plurality of the individual opening regions are provided in a width direction of the suction belt-like body. The transported object is a can,
The transport system according to claim 1, wherein the upstream conveyor and the suction transport conveyor are configured to be able to transport a plurality of cans in the width direction. The upstream conveyor has a state detection means for detecting the state of the conveyed object,
The conveyance system according to claim 1, wherein the negative pressure control unit individually controls the negative pressure in the individual opening region in accordance with an output of the state detection unit. The transported object is a can,
The state detection means is a fall can detection means for detecting a fallen can body,
The negative pressure control unit is configured to release suction of the individual opening area when a predetermined number of can bodies around the collapsed can body reach the individual opening area. The transport system according to claim 7. A suction conveyance conveyor having a suction band having a conveyance surface for sucking the object to be conveyed, and a suction unit for sucking the object to be conveyed from the back surface of the conveyance surface of the suction band,
The suction unit has an opening surface facing the back surface of the transport surface of the suction belt, and a negative pressure space that applies a negative pressure to the suction belt from the opening surface;
The opening surface has a plurality of individual opening regions;
A suction conveyance conveyor, further comprising a plurality of negative pressure control units that independently control negative pressure applied to the suction belt from the individual opening region.

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