JP2622448B2 - Storage conveyor conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is a storage conveyor for feeding the object to be conveyed, such as corrugated cardboard sheets constant during Matakuwae storage in a conveyor installed in a fixed storage space, from the storage conveyors if necessary the transferred object
It relates to a transport device .

[0002]

2. Description of the Related Art For example, in a corrugated cardboard manufacturing plant or the like, necessary slits or folds are made in a flow direction of a continuous corrugated cardboard sheet by a corrugated cardboard manufacturing apparatus.
The corrugated cardboard sheet is cut in the width direction so as to have a predetermined size in the flow direction of the corrugated cardboard sheet, and a rectangular corrugated cardboard sheet with folds is continuously manufactured at high speed. The rectangular corrugated cardboard sheets are stacked at a predetermined height, and are conveyed as a batch to an outlet for each batch. A predetermined storage space is provided next to the corrugated cardboard manufacturing apparatus, in which a predetermined amount of corrugated cardboard sheets for each of the conveyed batches is stored.

Further, in order to carry out processing according to various orders according to customer requirements such as printing, punching, gluing, etc., various cardboard processing machines including a printing machine, a die cutter and the like are provided linearly or in parallel. Have been. The corrugated cardboard sheet stored in the storage space is supplied to any of the corrugated cardboard processing machines as necessary, and is subjected to necessary processing.

When storing corrugated cardboard sheets in the above-mentioned storage space, a method of generally providing a plurality of rows of storage conveyors in the space in parallel and feeding and storing corrugated cardboard sheets of each batch side by side on the conveyers of each row is generally used. Has been adopted. For multiple rows of storage conveyors, a distribution transfer car running in a direction perpendicular to the entrance side and a discharge traverser running in a direction perpendicular to the exit side are provided, and each batch discharged from the cardboard manufacturing equipment is provided. The corrugated cardboard sheets are fed into a row of storage conveyors by a transfer car for distribution, and the corrugated cardboard sheets stored for a certain period of time are supplied for each batch by a discharge traverser in accordance with the progress of any process of the corrugated cardboard processing machine.

[0005]

However, in the above-described steps of the corrugated cardboard manufacturing apparatus and the following various corrugated cardboard processing machines, their production speeds and production times do not necessarily match. Therefore, it is necessary to temporarily store the corrugated cardboard sheet manufactured by the corrugated cardboard manufacturing apparatus on a storage conveyor as a buffer until it is processed by a corrugated cardboard processing machine. Therefore, how to effectively feed the corrugated cardboard sheet sent from the corrugated cardboard manufacturing apparatus to the storage conveyor so as not to generate useless space, and supply a predetermined corrugated cardboard sheet to the next corrugated cardboard processing machine in a timely manner as needed. is important.

[0006] However, the conventional storage conveyor is merely a type in which a plurality of rows of conveyors are provided in a storage space, and the storage conveyor conveys the loaded cardboard sheets in one direction from the entrance side to the exit side. The cardboard sheets to be fed are placed on the conveyor at appropriate intervals and timing according to the intuition and experience of the worker. For this reason, the loading efficiency on the storage conveyor is low, and the storage space cannot be used effectively.

[0007] The present invention is designed to make the drive of the storage conveyor freely reversible and reversible, taking into account various problems when storing and transporting an object to be conveyed to the storage conveyor provided in the conventional storage space described above. To provide a storage conveyor transport device capable of automatically storing, transporting, and discharging those having the maximum capacity with the most space efficiency without causing or minimizing the gap between the transported objects by receiving, discharging, and transporting the objects. As an issue.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a storage conveyor transport device according to the present invention is provided.
The storage conveyor and feeding unit to the inlet side of the storage space for storing a predetermined time transferred object, set up a transfer unit on the outlet side, said storage conveyor, respectively
Multiple objects that can support multiple objects and can be driven forward and reverse.
It consists of an upright conveyor and is independent of the supply unit.
Delivery of conveyed goods to conveyor and subsequent independent conveyor
Control the delivery of conveyed goods to the independent conveyor preceding
Means for providing a supply unit at the time of delivery.
Alternatively, move the transported object located at the head of the succeeding independent conveyor first.
To continuously feed the conveyed goods on the independent conveyor
At the end of the preceding independent conveyor
Wait or wait at the beginning of the preceding independent conveyor
By moving the independent conveyor in reverse,
At the end, and the supply unit or the subsequent independent
The conveyor and the preceding independent conveyor are almost simultaneously at the same speed, respectively.
That is, the motor was driven to rotate forward .

[0009]

The storage conveyor according to the present invention having the above-mentioned structure is provided.
A) In the transfer device, from the supply unit to the independent conveyor
It can be a feed from an independent conveyor continuously transported object independent conveyor preceding the transported object by controlling the receiving <br/> pass transported object to preceding independent conveyors.

The control means is provided at the end of the preceding independent conveyor.
Wait for the goods to be transported, or
The first conveyed object is located at the rear end, and supply or subsequent
The vertical conveyor and the preceding independent conveyor are almost simultaneously rotated at the same speed.
The conveyed object on the independent conveyor that precedes the conveyed object by rotating
To be transported without gaps, or
Control is performed to simultaneously receive and discharge the conveyed material.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a plan view of an embodiment in which a storage conveyor is provided in a storage space. Storage space S shown
In this embodiment, printing on a corrugated cardboard manufacturing apparatus provided on the upstream side and a corrugated cardboard sheet manufactured by this manufacturing apparatus,
Processing machines D ₁ and D that perform various processes such as punching and gluing
₂ ....

A large number of storage conveyors 1 are provided in the storage space S in parallel as shown in the figure. The storage conveyor 1 stores corrugated cardboard sheets, which are stacked into one batch in multiple stages, in a conveyor for a certain period of time, transports each batch as necessary, and sends out the batch to a processing machine. In principle, they have the same configuration. On the receiving side, a transfer car 2 that moves along the transport path 2a is provided as a supply unit, and on the discharge side, a traverser 3 that moves along the transport path 3a is provided as a transfer unit. Note that the corrugated cardboard sheets, which are unloaded from the corrugated cardboard manufacturing apparatus and are stacked in multiple stages to form one batch, are sequentially supplied to the transfer car 2 from the unloading conveyor 8 of the corrugated cardboard manufacturing apparatus.

FIG. 2 is a sectional view taken along line II-II in FIG. The illustrated storage conveyor 1 is composed of four endless belt conveyors as a whole, and includes a receiving conveyor 1A, transport conveyors 1B and 1C, and a discharge conveyor 1D in order from the left. Each conveyor 1A~1D are loaded with batch _W 1 _{to W-10} of the cardboard sheet in a state packed to minimize the mutual gaps. Each of the conveyors 1A to 1D is independently driven by a motor so as to be able to rotate forward and reverse independently, as described later. Although each of the conveyors 1A to 1D is an endless belt conveyor, the conveyor itself may be continuous or discontinuous as long as it is a structure that can transport a flat plate without being a belt conveyor. Note that the transfer car 2 and the traverser 3 are independent motors each having a conveyor that is normally driven only in the normal rotation direction.

As shown in FIG. 3, each of the conveyors 1A to 1D
Is provided with a motor 4 _-1 , an inverter 5 pulse generator 6 (PGA to PGD) and a control circuit 7 thereof, and an inverter 5 _-1 based on a signal from the control circuit 7.
The speed of the motor _4-1 is controlled through the control of the motor 4-1 to accelerate from a low speed to a high speed, and conversely, a control of decreasing the speed from a high speed to a low speed to stop and stop, or a control of normal rotation and reverse rotation. The conveyors of the transfer car 2 and the traverser 3 each have a motor _4-2 and an inverter 5
_-2 and a control circuit 7 is provided, the motor 4 via the inverter _5-2 on the basis of a signal from the control circuit 7
The control is performed such that the speed is controlled from -low speed to -high speed by controlling the speed _-2 , and conversely, the rotation is reduced from high speed to low speed and stopped.

Further, as shown in FIG.
Against D, each of the three optical sensors (photo sensors or photo _{cell) PH 1 ~ 4, PH a1} ~ d1, PH a2 ~
Four sets of _d2 are provided, and the optical sensors PH _5-1 and PH _5-2 are provided for the traverser 3.

The transfer car 2 may be movable on a traveling rail of a transport path in a direction orthogonal to the storage conveyor 1, and may be driven by a built-in motor so that it can run on its own, or may be a rope or the like. (Not shown). Also, a short belt conveyor 2a for transferring the batch W ₀ of cardboard in the same direction as the storage conveyor 1 is provided on the transfer car 2. As shown in FIG. 1, another conveyor 8 is provided at the lower left position in the figure, and a cardboard discharge port of a cardboard manufacturing apparatus is connected to the left side of the conveyor 8 (not shown). The transport conveyor 8 is also divided into several conveyors.

The traverser 3 is also movable on a traveling rail of the transport path in a direction orthogonal to the storage conveyor 1 and has a similar construction to that of a transfer car and has a short belt conveyor 3a.
Having. Processing of various cardboard sheet machine D _1, D 2 _...... is provided on the right side position of the traverser 3.

An example in which a batch group of corrugated cardboard sheets is transferred by the transfer device of the embodiment configured as described above will be described below. First, the transfer from the transfer car 2 to the receiving conveyor 1A is performed as follows (see FIG. 4). As shown in FIG. 4A, the storage conveyor 1 in a predetermined row
The transfer conveyor 2A that moves along the transport path 2a without a cardboard sheet loaded on the receiving conveyor 1A
The batch W of corrugated cardboard sheets up to this receiving conveyor 1A
Assume that ₁ has been transferred. To transfer to the receiving conveyor 1A, when based on a signal from the control circuit 7 is a conveyor of the receiving conveyor 1A and the transfer car 2 is started in the forward direction, being immediately shift from the low speed to the high speed, batch W ₁ is received It is transferred to conveyor 1A.

[0019] The tip batch W ₁ of the cardboard sheet is advanced it is when possess the conveyor. 1A, confirm receipt thereof by the optical sensor PH ₁ is shaded. The amount of advance from the confirmation point is obtained by the amount of pulses generated by the pulse generator PGA, and when the amount of advance reaches a predetermined amount, both the conveyor of the transfer car 2 and the conveyor 1A shift from a high speed to a low speed. Is done.
Then, also stops the conveyor of the transfer car 2 together with the rear end of the batch W ₁ is a conveyor 1A is stopped by passing light of the signal of the photosensor PH ₁ passes through the optical sensor PH ₁ is transported batch W ₁ is stopped Is done.

Next, as shown in (b) of FIG. 4, only the batch W ₁ is transferred, if the margin still receive the next batch in receiving conveyor 1A, the next batch W conveyor and conveyor 1A of the transfer car 2 came conveyed ₂ from facer is controlled in the same manner as described above is transferred to a conveyor 1A batch W ₂ is carried out. That is, while advancing the batch W ₁ on the conveyor 1A perform the same operation as described above transports the batch W ₂ to conveyor 1A, the transfer to the conveyer 1A is finished to stop the conveyor of the conveyor 1A and the transfer car 2.

Further, the batches W ₁ and W ₂ are placed on the conveyor 1A.
If is has been transferred can afford to accept another batch W ₃ being transported batch W ₃ to the conveyor 1A in the same operation again above. When the conveyor 1A has no room to receive the next batch, a full signal is issued.

Next, the transfer from the receiving conveyor 1A to the transporting conveyor 1B is performed as follows (see FIG. 5). As shown in FIG. 5A, when nothing is loaded on the transport conveyor 1B and it is empty, the receiving conveyor 1A at the preceding stage
Full when the signal comes immediately receive conveyer 1A and the transfer conveyor 1B is invoked from batch W ₁ to W-fast from slow
₃ is transferred.

The beginning of the batch _{W 1} is transfer is confirmed to the conveyor 1B blocking light sensor PH _2. The amount of progress from this confirmation time is obtained by the amount of pulses generated by the pulse generator PGB, and when the amount of progress reaches a predetermined amount, the receiving conveyor 1A and the transport conveyor 1
Both B are shifted from a high speed to a low speed. Then, the rear end of the batch W ₁ passes through the optical sensor PH _2, it can accept the next batch W ₂ is confirmed remain within the length of the conveyor 1B to that moment, accept if both conveyors Continues the operation, and is again accelerated from the low speed to the high speed to perform the transfer.

Thus, the three batches W _{1 to} W ₃ are sequentially transferred from the receiving conveyor 1A to the transporting conveyor 1B. Progress of the head of the batch W _1, a pulse generator PGB from the time the tip is shielded light sensor PH ₂
Obtained by the pulse quantity generated by, when it becomes an amount that the progress quantity is equivalent to the distance to the front predetermined extent than the distance from the optical sensor PH ₂ to the light sensor PH _b2, both conveyors 1A, 1B are The speed is changed from a high speed to a low speed. In this low-speed state, the batches W _{1 to} W ₃ further advance, and the signals generated when the leading end of the leading batch W ₁ shields the optical sensor PH _b2 cause the two conveyors 1A,
1B is stopped, all the transfer of the batch _W 1 to _W-3 from conveyor 1A to conveyor 1B is completed. At this time, a signal is output that the receiving conveyor 1A is empty and the transporting conveyor 1B is full.

As shown in FIG. 5B, the conveyor 1B
The transfer when the batch Wk preceding the above is loaded is as follows. When a signal indicating that the receiving conveyor 1A is full is output, the transport conveyor 1B is started in the reverse direction, accelerated from a low speed to a high speed, and sent to the receiving conveyor 1A side. When the rear end of the batch Wk shields the light sensor PHb ₁ conveyer 1B by that signal is decelerated to a low speed from a high speed, then, it is stopped and shielding the light sensor PH _2.

The acceptance and lengths of the batch W ₁ are compared accept if both conveyors subsequent conveyor 1B except batch Wk are transported is shifting from immediately slow is started in the forward direction at high speed, (a the head of the case as well as batch W ₁₎ of its progress quantity is obtained by a pulse generator PGB from the time of shielding the light sensor PH _2, its progress quantity is decelerated to a low speed at the time has reached a predetermined amount.

[0027] The batch _{W 1} proceeds at a low speed state, the optical sensor PH ₂ is then end passes, batch Wk and _{W 1}
The length of the conveyor 1B excluding the total length of the next batch W
₂ of the length and compared, both the conveyor again further determines batch W ₂ and acceptable continues to transfer accelerating from low speed to high speed.

[0028] also transferred to the transfer conveyor 1B in the same manner for the next batch W _2, a predetermined distance willing both conveyors 1A after the tip has shield light sensor PH _2, 1B is decelerated, rear light sensor PH It stops when passing ₂ . If there is time allowance from the transfer car 2 to accept the next batch, batch W ₃ then are immediately transferred from the low-speed receiving conveyor 1A is reversed activated to carry-out side of the receiving conveyor 1A at high speed back to the receiving side It is, receiving conveyors 1A when its rear end blocks light sensor PHa ₁ is a low speed, is stopped when detecting the trailing edge by an optical sensor PH _1. This state is shown in FIG. Then, the batches are sequentially transferred from the transfer car 2 to the margin of the receiving conveyor 1A.

As described above, by reversing the batch by reversing the conveyor, useless space between the batches is eliminated. Next, transfer from the conveyor 1B to 1C will be described with reference to FIG.

As shown in FIG. 6 (a), it is assumed that the conveyor 1C is empty and 1B has two batches of stacked sheets. As soon as it is confirmed that both conveyors 1B and 1C are in the above-mentioned state, both conveyors 1B and 1C are started in the normal rotation direction and shifted from a low speed to a high speed. And
The same operation as in the case of FIG. 5A is performed, and the transfer of the batches W ₁ and W ₂ to the transport conveyor 1C is completed.

As shown in FIG. 6 (b), advance two batches _W k to the conveyor 1C, _{if W 1,} is stacked have space to stack the next batch _{W 1} is batch _{W 1} in this space After confirming that the transport conveyor 1C can be transported, the transport conveyor 1C is first activated in reverse to eliminate useless space. Sent from the low speed fast, becomes slower when the rear end of the batch Wk shields the light sensor PHc _1, the optical sensor PH ₃
Stops due to shading.

[0032] By in FIG. 5 (b), the same operation as in the case of (c) is carried out, batch _{W 1} is transferred to the transfer conveyor 1C, then, batch _{W 2} is carried conveyor 1B Transferred to the side. The transfer of each batch of sheets from the transport conveyor 1C to the discharge conveyor 1D is performed in the same manner as described above according to various patterns.

Further, the transfer from the discharge conveyor 1D to the traverser 3 is as follows. As shown in FIG. 7, it is on the discharge conveyor 1D stacked three batches W ₁ to _W-3, the traverser 3 to the discharge position on the conveyor line assumed to be stopped. In this state, the discharge conveyor 1D and the belt conveyor of the traverser 3 are started to rotate forward, and the speed is changed from a low speed to a high speed. First batch W
_{When the} amount of progress from the time when the tip of the light sensor ₁ shields the optical sensor PH _5-1 reaches a predetermined amount, the discharge conveyor 1D and the conveyor of the traverser 3 are switched to low speed, and the next batch W ₂
Tip stops the discharge conveyor 1D at the time of the shield light sensor PH _d2, batch W ₁ of the tip optical sensor PH
The conveyor of the traverser 3 is stopped when _5-2 is shielded from light. Such traverser 3 stacked batches W ₁ in the moves along the transport path 3a, a predetermined processing machine D
After feeding batch W ₁ to, to move to the discharge end of the predetermined storage conveyor 1, by repeating the same operation again, supplied to the sequential machine D batch W.

As described above, transfer to each conveyor or between each conveyor is performed individually. Note that even if sheets of various lengths are manufactured and conveyed by the cardboard manufacturing apparatus, the same conveying method as described above is used.

The priority order for transferring a batch of sheets among the four conveyors 1A, 1B, 1C, 1D, the transfer car 2, and the traverser 3 of the storage conveyor 1 is set as follows. The drive unit may be controlled by a control circuit. (1) Priority is given to transfer from the transfer car 2 to the receiving conveyor 1A. However, when the conveyor 1A is full, transfer from the conveyor 1A to the conveyor 1B has priority. (2) Priority is given next to transfer from the discharge conveyor 1D to the traverser 3. (3) Transfer of the receiving conveyor 1A, the conveying conveyors 1B and 1C, and the discharging conveyor 1D between the respective conveyors (2)
Next priority. However, when another high-priority command occurs during transfer, the operation during transfer is completed. By doing so, it is possible to minimize the reduction and stop of the production speed of the corrugated cardboard manufacturing apparatus and the processing machine.

[0036]

As described in detail above, the present invention provides a storage
Multiple objects can be supported at the pace and forward / reverse drive is possible
Storage conveyor consisting of multiple independent conveyors and its
A supply unit and a transfer unit are provided at the entrance and exit, respectively.
A means for controlling the delivery of conveyed goods on the storage conveyor
The transported object waits at the end of the more independent independent conveyor.
Or the last conveyed object on the preceding independent conveyor
At the supply unit or the subsequent independent conveyor and the
Vertical conveyor is driven almost simultaneously and forward at the same speed.
Saves time on delivery of each conveyor and saves space
And waste from storage conveyors
Can be performed simultaneously, so there is no gap between each batch
Transfer of batches of maximum capacity, with or without packing
Various advantages are obtained, such as the ability to store things.

[Brief description of the drawings]

FIG. 1 is an overall schematic plan view of an embodiment in which a storage conveyor is installed in a storage space.

FIG. 2 is a sectional view taken along line II-II in FIG. 1;

FIG. 3 is a schematic diagram showing the arrangement of a storage conveyor driving device and optical sensors.

FIG. 4 is a diagram illustrating a transfer operation from a transfer car to a receiving conveyor.

FIG. 5 is a diagram illustrating a transfer operation from a receiving conveyor to a transport conveyor.

FIG. 6 is a view for explaining a transfer operation from a conveyor to a conveyor;

FIG. 7 is a view for explaining the transfer operation from the discharge conveyor to the traverser.

[Explanation of symbols]

1 storage conveyors 1A receives conveyer 1B, 1C conveyor 1D discharge conveyor 2 transfer car 3 traverser 4 _{-1, 4 -2} motor _{5-1, 5-2} inverter 6 pulse generator PH ₁ ～PH ₄ optical sensor PHa ₁ ～PHd ₁ Optical sensor PHa _{2 to} PHd ₂ Optical sensor PH _{5-1 to} PH _5-2 Optical sensor

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor: Hoharu Mori 3-5-12, Hirano-cho, Chuo-ku, Osaka-shi Lengo Co., Ltd. Head office (72) Inventor: Hidetoshi Hoshiyama 3-5-2, Hirano-cho, Chuo-ku, Osaka-shi No. 12 Inside the head office of Rengo Co., Ltd. (56) References JP-A-57-196028 (JP, A) JP-A-2-75515 (JP, A)

Claims (1)

(57) [Claims] A storage space for storing a conveyed object for a certain period of time and a supply unit at an entrance side thereof;
A transfer unit is installed on the exit side, and the storage conveyor
Can support multiple conveyed objects and can be driven forward and reverse.
Constituted by the ability of several independent conveyor, said supply
Delivery of conveyed goods from the department to the independent conveyor and subsequent
Receiving the conveyed goods from the vertical conveyor to the preceding independent conveyor
Means for controlling the delivery;
At the beginning of the supply unit or the subsequent independent conveyor
The transferred object is continuously connected to the preceding independent conveyor.
In order to feed in, it is left at the end of the preceding independent conveyor.
Keep the goods on standby, or use the preceding independent conveyor.
The independent conveyor is driven to reverse the conveyed object at the top of
By positioning it at the end of the feed section or after
Nearly independent and preceding independent conveyors
At the same time, control is performed so that the motor rotates forward at the same speed.
Storage conveyor conveyor.