JPH0899708A - Shuttle type conveyor with variable cylinder distance - Google Patents

Abstract

(57) [Summary] [Purpose] Providing a shuttle conveyor that allows the distance between vehicles to be varied. [Constitution] The shuttle type conveyor 30 comprises a plurality of transport vehicles 54, 55 each having an elevating platform for loading and elevating a transport object.
An inter-vehicle distance variable cylinder 48 that connects adjacent transport vehicles and varies the inter-vehicle distance of the transport vehicles, and a reciprocating cylinder 37 that reciprocates a plurality of transport vehicles by a predetermined distance are provided. The distance is variable between the same distance as the predetermined distance and the distance different from the predetermined distance, and the elevator is the same as the predetermined distance when the inter-vehicle distance variable cylinder makes the inter-vehicle distance the same as the predetermined distance. Are arranged at intervals of. The conveyed goods sent to the mounting table are sequentially forwarded by the reciprocating movement of the conveyor vehicle by the operation of the reciprocating cylinder and the lifting operation of the lift table, but if the succeeding conveyed goods are not sent, The variable distance cylinder widens the inter-vehicle distance of the transport vehicle, and the transport vehicle in the front forwards the transport object, but the transport vehicle in the rear is in the standby state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case where a carrier is reciprocally moved between a carrier and a mounting table installed along the carrier to deliver and forward a conveyed object. The present invention relates to a shuttle type conveyor for widening the interval between transporting vehicles and moving only the transporting vehicle on the leading side and keeping the transporting vehicle on the trailing side on standby when a subsequent transported object is not sent.

[0002]

2. Description of the Related Art Conventionally, shuttle type conveyors have been used in an actual flat sheet.
It is disclosed in Japanese Patent Publication No. 174325. The shuttle-type conveyor has a plurality of carriages each of which has its own lifting platform for lifting and lowering the transported objects, connected at equal pitches, a reciprocating cylinder that reciprocates the connected carriages for a predetermined distance, and a traveling direction of the carriages. And a mounting table that is provided for receiving the transported object on the lifting table. The pitch of the lifting platform is approximately the same as the reciprocating distance of the reciprocating cylinder.

The operation of the shuttle type conveyor (see FIGS. 12 to 16) is performed by, for example, four carriages 26, 27, 28,
A case of a shuttle type conveyor including 29 and five mounting tables 21, 22, 23, 24 and 25 will be described. The connection pitch of the carriage and the arrangement pitch of the mounting table are the same P1. The moving distance of the carriage is also the same as the arrangement pitch of the mounting table. All the carts are on standby at the goods receiving position for receiving goods (see FIG. 12). The first mounting table 21 at the end
When the first conveyed product W1 is fed from the outside, the elevating table (not shown) of the rearmost first carriage 26 ascends and receives the first conveyed product W1 from the first mounting table 21.

Subsequently, all the carriages simultaneously move forward (move to the left) by the connection pitch P1 of the carriages as shown in FIG. At the advanced position, the lift of the first carriage 26
It descends and lowers the first conveyed product W1 onto the second mounting table 22.
During this time, the second transported object W2 is carried into the first mounting table 21.

All trucks have a pitch P1 as shown in FIG.
Just retreat and return to the conveyed item receiving position. First and second carriage 2
The lifts of Nos. 6 and 27 ascend to move the first and second conveyed objects W.
Receive 1 and W2 respectively. All the carriages advance to the left in FIG. 14 again, lower the first transported object W1 onto the third mounting table 23 and the second transported object W2 onto the second mounting table 22, and return to the transported object receiving position.

[0006] In this way, all the trucks sequentially feed the conveyed items, and as shown in FIG.
The first conveyed product W1 is unloaded. The 1st conveyed goods W1 on the 5th mounting stand 25 are carried out to the following place by a carrying-out apparatus (illustration omitted), such as a crane and an extrusion device, and the 5th mounting stand 25 becomes empty.

[0007]

However, such a shuttle type conveyor 20 has the following problems because the distance between the carriages is fixed. First, as shown in FIG. 16, even if the entire carriage returns to the conveyed object receiving position, if the next conveyed object W5 has not been sent to the first mounting table 21, all the carriages wait at that position. I have to For this reason, the second conveyed product W2 cannot be forward-fed to the vacant fifth mounting table 25, and the carry-out device must be kept on standby.

Secondly, if there are structures such as pillars and drains at some of the mounting tables of the plurality of mounting tables, the mounting tables cannot be installed at those locations. . For this reason, the installation location of the shuttle type conveyor must be changed.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a plurality of transport vehicles equipped with an elevating table for loading and lifting a transport object and a specific adjoining transport vehicle are connected to each other so that the inter-vehicle distance between the transport vehicles is increased. A variable inter-vehicle distance variable cylinder and a reciprocating cylinder that reciprocates the plurality of transport vehicles by a predetermined distance. The inter-vehicle distance variable cylinder has the same inter-vehicle distance as the predetermined distance and the predetermined distance. And the elevator is arranged at the same interval as the predetermined distance in a state where the inter-vehicle distance variable cylinder makes the inter-vehicle distance the same as the predetermined distance. The above-mentioned problems have been solved by the existing shuttle type conveyor.

[0010]

The transported object sent to the mounting table is sequentially advanced by the reciprocating movement of the carrier vehicle by the operation of the reciprocating cylinder and the elevating operation of the elevating table. When the transport vehicle transfers and forwards the transport object, if the subsequent transport object is not delivered, the inter-vehicle distance variable cylinder expands the inter-vehicle distance of the transport vehicle. Since the reciprocating cylinder continues to operate, the carrier vehicle ahead of the variable inter-vehicle distance cylinder moves forward, but the rear vehicle does not move forward due to the cooperation of the variable inter-vehicle distance cylinder and the reciprocating cylinder, and stopped. It remains. That is, the transport vehicle in front of the variable inter-vehicle distance cylinder feeds the transported material forward, but the transport vehicle in the rear is in the standby state.

After that, when the transported article is sent to the mounting table, the rear transport vehicle in the standby state receives the transported article. When the transported object is transferred to the lifting platform, the inter-vehicle distance variable cylinder operates to return the inter-vehicle distance of the guided vehicle to the original distance.
Therefore, the conveyed object that has been sent with a delay is forward-fed so as to recover the delay later.

[0012]

Embodiments of the present invention will be described below with reference to FIGS. Shuttle type conveyor 30 (see FIG. 1)
Are six bogies 31, 32, 33, 34, 35, 36,
Reciprocating cylinder 37, seven mounting tables 41, 42, 43,
44, 45, 46, 47, an inter-vehicle distance variable cylinder 48,
It has lifts 61, 62, 63, 64, 65, 66 and the like.

The carriage is supported by wheels 38 and arranged on rails (not shown). Each trolley has a lifting platform that raises the transported object higher than a loading platform described later by a lifting cylinder 39 (see FIG. 2). In FIG. 1, the five carriages from the second carriage 32, which is the second carriage from the right end, to the sixth carriage 36, which is the first carriage at the left end, are connected to the equal pitch P6 by the connecting rod 49, and the lifting platform is also arranged at the equal pitch P6. It is set up. In FIG. 1, the first truck 31 at the end on the right end
The connecting rod 49 between the second carriage 32 and the third carriage 33 and the first carriage 3 so that the connecting pitch between the second carriage 32 and the second carriage 32 can be varied.
An inter-vehicle distance variable cylinder 48 is provided between the vehicle 1 and the vehicle 1.

Between the first truck 31 and the second truck 32,
Distance measuring means 50 for measuring the distance between the carriages is provided. The distance measuring means 50 (see FIG. 3) is the second carriage 32.
And a pinion 52 that is provided on the first carriage 31 and meshes with the rack 51, and the pinion 5
It is comprised with the converter 53 which converts the rotation speed of 2 into the value of distance. A reciprocating cylinder 37 is provided between the sixth carriage 36 and the floor F. The seven mounting bases are arranged on the floor at the same pitch P6 as the connecting pitch P6 of the carriage.

Next, the operation will be described. The shuttle-type conveyor 30 sequentially transfers and forwards the conveyed object between the carriage and the mounting table by the reciprocating movement of all the carriage pitches by the reciprocating cylinders 37 and the lifting and lowering of the lift table, and the front end of the transported object. It is sent from the first mounting table 41 to the leading seventh mounting table 47 (see FIG. 4).

The conveyed product W is advanced to the seventh mounting table 47.
Is carried out to the next place by a carrying-out device such as a crane and an extrusion device, and the seventh mounting table 47 becomes empty. The next conveyed product is sent to the vacant seventh mounting table 47 by the reciprocating motion of all the carriages (see FIG. 4).

In this way, the transported object is placed on the seventh mounting table 47.
To the next process from the 7th mounting table 47, but when all the carriages have returned to the position where they receive the conveyed objects, when the next conveyed object has not been sent to the 1st mounting table 41. , All the trucks are waiting at the waiting position. If the carry-out device carries out the conveyed article on the seventh mounting table 47 by the carrying-out device while waiting, and the seventh mounting table 47 remains empty, it interferes with the subsequent steps. It may come.

In such a case, the inter-vehicle distance varying cylinder 48 is operated while operating the reciprocating cylinder 37. Then, the reciprocating cylinder 37 operates to move all the carriages, but the inter-vehicle distance variable cylinder 48
Therefore, the distance between the first and second bogies 31 and 32 is 2.
It spreads to P6, and only the first carriage 31 is the first as shown in FIG.
It stands by while facing the mounting table 41. Therefore, the transported article W is not sent to the seventh mounting table 47 and does not hinder the subsequent steps.

The extension / contraction operation of the variable distance cylinder 48 is as follows.
The distance between the first and second carriages 31 and 32 is measured by the distance measuring means 50 and automatically stopped. And
The first carriage 31 receives the conveyed product when it is sent in, and by the operation of the inter-vehicle distance variable cylinder 48,
It moves and delivers the conveyed object facing the second mounting table 42.

The shuttle type conveyor 30 can be used as follows. In the case where the conveyed objects are a paper roll having a diameter close to the connecting pitch P6 of the carriage or a coil wound with a thin steel plate, the conveyed objects come close to each other, and the binding work cannot be performed. Therefore, in the shuttle type conveyor 30 shown in FIG. 5, by separating the first carriage 31 from the second carriage 32, it is possible to easily carry out the work of binding the conveyed objects.

The bundling work can also be carried out by raising the conveyed articles by the elevators on the second to fifth carriages and separating them from the adjacent conveyed articles in the vertical direction. In this case, during the binding work, the first carriage 31 can be moved by the inter-vehicle distance variable cylinder 48 to receive and deliver the conveyed objects.

In the shuttle type conveyor 30 described above, the connection pitch between the first carriage 31 and the second carriage 32 is variable, but like the shuttle conveyor 70 shown in FIG. 6, the fourth carriage 34 is used. The pitch between the vehicle and the fifth carriage 35 may be variable. In this case, the inter-vehicle distance variable cylinder 48 is provided between the fourth carriage 34 and the connecting rod 49 that connects the sixth carriage 36 and the fifth carriage 35.

This shuttle type conveyor 70 uses the inter-vehicle distance variable cylinder 48 to operate the fifth and sixth carriages 35 without operating the reciprocating cylinder 37 when the next conveyed product is not sent to the first mounting table 41. , 36 can be moved forward and the conveyed article W can be delivered to the seventh mounting table 47.

Further, although not shown, the inter-vehicle distance variable cylinder 48 may be provided between the sixth rod 36 and the connecting rod 49 connecting the fourth truck 34 and the fifth truck 35. Even in this case, the sixth carriage 36 can be moved by the inter-vehicle distance varying cylinder 48 without operating the reciprocating cylinder 37.
Only the first to move the transported object from the sixth mounting table 46 to the seventh mounting table 46.
It can be handed over to the mounting table 47.

In the above shuttle type conveyors 30 and 70, the mounting pitches of the mounting tables are all at equal intervals.
In the shuttle type conveyor 80 shown in (1), only the arrangement pitch P7 of the first mounting table 31 and the second mounting table 32 is set to be wider than the other arrangement pitch P6 depending on the situation of the installation location of the shuttle type conveyor.

The operation of the shuttle type conveyor 80 will be described. First, all the carriages are moved to the conveyed object receiving position by the reciprocating cylinder 37. At this time, the inter-vehicle distance variable cylinder 48 operates to widen the inter-vehicle distance between the first and second bogies 31 and 32 to P7. Therefore, all the carriages face all the mounting bases (see FIG. 7).

After that, all the trucks move forward by pitch P6.
However, the first carriage 31 cannot face the second mounting table 42. Therefore, the first carriage 31 is brought close to the second mounting table 42 by the inter-vehicle distance variable cylinder 48. Then, the inter-vehicle distance between the first bogie 31 and the second bogie 32 is maintained at the pitch P6 (see FIG. 8). As a result, the first cart 31 can deliver the conveyed product to the second mounting table 42. When all the carriages return to the standby position, the inter-vehicle distance of the first carriage 31 is changed to the pitch P7 again by the inter-vehicle distance variable cylinder 48, and is opposed to the first mounting table 41.

The shuttle type conveyor 90 shown in FIGS. 9 to 11 has an arrangement pitch P8 between the fourth mounting table and the fifth mounting table.
However, it is different from the arrangement pitch P6 with another mounting table. The operation of the shuttle type conveyor 90 will be described. First, all the carriages are moved to the conveyed object receiving position by a reciprocating cylinder (not shown). Then, the inter-vehicle distance variable cylinder 48
Is activated to increase the inter-vehicle distance between the fourth carriage 34 and the fifth carriage 35 to P8. All the carts face all of the mounting tables and receive the conveyed items from the mounting tables (see FIG. 9).

Then, all the carriages are, as shown in FIG.
Move forward on pitch P6. However, the fourth carriage 34 cannot face the fifth mounting table 45. For this reason, after the transfer of the conveyed goods of the carriages other than the fourth carriage 34, the fourth carriage 34 is opposed to the fifth carriage 35 by the operation of the inter-vehicle distance variable cylinder 48 (see FIG. 11). As a result, the transported object of the fourth carriage 34 is delivered to the fifth mounting table 45. When all the carriages return to the standby position, the inter-vehicle distance variable cylinder 48 is activated to operate the fourth carriage 34 and the fifth carriage 35.
The inter-vehicle distance between them is expanded to P8, and all the carriages are opposed to all the mounting bases (see FIG. 9).

Incidentally, the stroke of the piston of the variable vehicle distance cylinder 48 is the pitch P6, (P7-P).
6) and (P8-P6), the distance measuring means 50 is not always necessary. However, if the distance measuring means is provided and the distance between the carriages is set in advance in the distance measuring means, the carriage can be stopped at a desired position.

It should be noted that the mounting tables in the above embodiments are formed in a shape separated from each other. This is to convey the conveyed product by making the axis of the cylindrical conveyed product orthogonal to the conveyance direction, and as shown in FIG. 12 of the related art, the axial center of the conveyed product is made parallel to the conveying direction. In the case of transporting, the adjacent mounting tables may be connected to each other, and the cross-sectional shape orthogonal to the transport direction may be formed into an inverted “C” shape. However, as shown in FIG. 9, a portion where the mounting table cannot be installed due to the structure is cut.

Further, each shuttle type conveyor 30, 70, 8
1, 6, 7, and 9 showing 0 and 90, the trucks on the left side and the trucks on the right side (one in FIGS. 1 and 7) move integrally with each other with the inter-vehicle distance variable cylinder 48 as a boundary. In order to do so, set each truck on the left side to one front transport vehicle 55, 57, 5
It can be seen as 9,72, and each truck on the right side can be seen as one rear carrier vehicle 54,56,58,71. In this case, the variable vehicle distance cylinder 48
And the rear transport vehicles 54, 56, 58, 71 and the front transport vehicle 5
Of course, when the inter-vehicle distance to 5, 57, 59, 72 is narrowed, the pitches between the lifts are the same.

[0033]

According to the shuttle type conveyor of claim 1, the following effects can be obtained. Since the pitch between the transport vehicles can be varied by the variable inter-vehicle distance cylinder, even if the transport object is not sent to the mounting table at the rear, the transport vehicle at the rear can be separated by the variable inter-vehicle distance cylinder. It is possible to supply the transported material to the next process of the leading mounting table by moving the leading transportation vehicle while moving the waiting state to move the transportation object to the leading mounting table. In addition, even if there is a need to change the arrangement pitch of only the mounting bases at the positions corresponding to the structures such as columns and drains among the mounting bases arranged at equal intervals, the transportation corresponding to that position Since the distance between vehicles can be changed by the inter-vehicle distance variable cylinder to transfer the conveyed goods, the installation location of the shuttle type conveyor can be freely selected. Furthermore, since the interval between the transport vehicles can be varied, the elevating platform of the transport vehicle on one side is lifted at the position where the variable is possible to perform processing work on the transported object while the other is being processed. It is possible to move the side transportation vehicle to receive or deliver the transported object. When the distance measuring means is provided as in the second aspect, the interval between the transport vehicles can be freely set.

[Brief description of drawings]

FIG. 1 is a front view of a shuttle type conveyor according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a truck.

FIG. 3 is an enlarged view of a distance measuring unit.

FIG. 4 is a diagram for explaining the operation of the shuttle type conveyor of FIG.

5 is a diagram for explaining the operation of the shuttle type conveyor of FIG. 1. FIG.

FIG. 6 is a front view of a shuttle type conveyor according to another embodiment.

FIG. 7 is a front view of a shuttle type conveyor according to another embodiment.

FIG. 8 is a diagram for explaining the operation of the shuttle type conveyor of FIG. 7.

FIG. 9 is a front view of a shuttle type conveyor according to another embodiment.

FIG. 10 is a diagram for explaining the operation of the shuttle type conveyor of FIG.

11 is a diagram for explaining the operation of the shuttle type conveyor of FIG.

FIG. 12 is a front view of a conventional shuttle type conveyor.

13 is a diagram for explaining the operation of the shuttle type conveyor of FIG.

FIG. 14 is a view for explaining the operation of the shuttle type conveyor of FIG.

15 is a diagram for explaining the operation of the shuttle type conveyor of FIG.

16 is a diagram for explaining the operation of the shuttle type conveyor of FIG.

[Explanation of symbols]

W transported goods 30, 70, 80, 90
Shuttle type conveyor 37 Reciprocating cylinder 48 Inter-vehicle distance variable cylinder 50 Distance measuring means 61, 62, 63, 6
4,65,66 Lifting platform 54,56,58,71 Rear carrier 55,57,59,72 Leading carrier

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenichi Maegaki, Kenichi Maegaki Mizushima Kawasaki-dori, 1-chome, Kurashiki City, Okayama Prefecture (no address) Inside Mizushima Works, Kawasaki Steel Co., Ltd. (72) Haruyoshi Fujikawa Mizushima Kawasaki, Kurashiki City, Okayama Prefecture 1st Street (No Street) Mizushima Works, Kawasaki Steel Co., Ltd. (72) Inventor Yasuhiro Iwagami Mizushima Kawasaki City, Kurashiki City, Okayama Prefecture 1st Street (No Street) Affinity Package Co., Ltd. (72) Inventor Shoji Miyahara Osaka Prefecture 4-17-96 Tsurumi, Tsurumi-ku, Osaka City, Tsubakimoto Chain Co., Ltd. (72) Inventor Masatoshi Okada 4-17-96, Tsurumi Chain, Tsurumi-ku, Osaka City, Osaka City (72) Inventor, Norio Kojima Osaka 4-17 96, Tsurumi, Tsurumi-ku, Osaka Prefecture Tsubakimoto Chain Co., Ltd.

Claims (2)

[Claims] 1. An inter-vehicle distance variable cylinder for connecting a plurality of vehicles, which are adjacent to each other, for varying an inter-vehicle distance between the vehicles, each of which is provided with an elevating table for loading and elevating an article to be conveyed. A reciprocating cylinder that reciprocates the plurality of transport vehicles by a predetermined distance, and the inter-vehicle distance variable cylinder sets the inter-vehicle distance to the same interval as the predetermined distance and an interval different from the predetermined distance. The shuttle is variable, and the elevator is arranged at the same interval as the predetermined distance in a state where the inter-vehicle distance variable cylinder makes the inter-vehicle distance the same as the predetermined distance. Type conveyor. 2. The shuttle type conveyor according to claim 1, further comprising an inter-vehicle distance measuring unit that is provided over the specific adjacent vehicles to measure the inter-vehicle distance.