JP6427879B2 - Cart carrier - Google Patents

Description

  The present invention relates to a cart transport device that transports a cart along a predetermined transport path, which is capable of connecting / separating a work floor cart on which a worker rides on a transported support cart that supports the transported object. .

  The predetermined transport as a cart transport device that transports a cart along a predetermined transport path, which is capable of connecting / separating a work floor cart on which an operator rides on a transport support cart that supports the transported object. Work floor trolley (auxiliary trolley 3 in Patent Document 1) on which a worker can ride before and after a transported object support trolley (Work support trolley 2 in Patent Document 1, Support body 1 in Patent Document 2) that supports the object to be transported. , 4, the first transported object transport path (the upper-side first transport path L1, the lower-side first transport path L2, and the return trip) on which the connecting cart connected to the relay body 11 of Patent Document 2 travels. Side first transport path L6, constant path 30 of Patent Document 2), and second transported object transport path on which only the transported object support carriage travels (outbound side second transport path L3 of Patent Document 1 and recovery path) Row-side second transport path L4, upstream of feeding means 90 of Patent Document 2 And a work floor carriage travel path on which only the work floor carriage travels (auxiliary carriage travel path L5 in Patent Document 1, return path 70 in Patent Document 2). And the first transported object transport path and the second transported object transport path allow an operator to work on the transported object (for example, Patent Document 1 and 2).

  According to such a cart transport apparatus, in the second transported material transport path, the work floor cart used in the first transported material transport route is separated from the connecting cart, and only the transported object support cart is used. In the first transported object transport path, since a work floor carriage is connected to the transported object support carriage used in the second transported object transport path, the first transported object transport path and the first transported object are used. (2) Since it is not necessary to reload the transported object between the transported object transport path and only the transported object support carriage supports and transports the transported object on the second transported object transport path, Since the work floor carriage is connected to the carriage support carriage for use in the first carriage conveyance path while being kept to the minimum necessary size that can be stably supported, the area around the conveyance object is required. By the worker who boarded the work floor cart That can be full and easily performed, an effect equal.

JP 2011-063044 A JP 2004-168461 A

However, in the configuration of the cart transport apparatus of Patent Document 1, the work floor cart (auxiliary carts 3 and 4) is also transported to the return-side first transport path L6. When it is necessary to accommodate the carriage, the total length of the return-side first transport path L6 is increased. When the total length of the return-side first transfer path L6 is longer than necessary, the number of work floor carriages traveling in the return-side first transfer path L6 increases and the manufacturing cost increases.
In addition, since the upper first transport path L1 and the lower first transport path L2, the forward second transport path L3, and the backward second transport path L4 are positioned in a perpendicular direction, the layout The degree of freedom becomes low.
Furthermore, since the work floor carriage is common to the upper-side first transfer path L1 and the lower-side first transfer path L2, the shape and size of the work floor carriage cannot be optimized for each of the transfer paths L1 and L2.
In addition, a part supply process for supplying parts to be assembled to the object to be conveyed to the work floor carriage is required, so that a useless space is increased on the upstream side of the work process.
Moreover, in the structure of the cart conveyance apparatus of patent document 2, since the long work floor trolley travel route (return route 70) only for returning the work floor trolley (relay body 11) is provided, this route is useless. As the length increases, the number of work floor trolleys traveling on the route increases, resulting in an increase in manufacturing cost.

  Therefore, in view of the above-mentioned situation, the present invention intends to solve the problem that a work floor carriage on which a worker rides and works on a transported object support cart that supports the transported object can be connected and separated. In the cart transport device that transports the cart along the transport route, the cart space that can occupy a small space, has a high degree of layout freedom, can optimize the shape and size of the work floor cart for each work route, and reduce the manufacturing cost. The point is to provide a device.

In order to solve the above-described problem, the cart transport device according to the present invention is capable of connecting / separating a work floor cart on which a worker rides and works on a transported object support cart that supports the transported object. A cart transport device for transporting a cart along a route,
The predetermined transport path is a first transported object transport path on which a connected cart in which the work floor cart is connected to at least one of the transported carrier support carts before and after the transport direction, and only the transported object support cart travels. Including a second transported object transport path and a work floor carriage travel path on which only the work floor carriage travels,
The first transported object transport path is configured by an upstream first transported object transport path and a downstream first transported object transport path that are adjacent to each other in parallel and whose transport directions are opposite to each other.
The second transported object transport path is an upstream second transported object transport path upstream of the upstream first transported object transport path, and downstream of the downstream first transported object transport path. Side second transported object transport path,
A downstream path and an upstream side of the first transported object transport path are connected by the work floor carriage travel path, and a closed path is formed by the first transport object transport path and the work floor truck travel path. ,
The conveyed object is an automobile,
The shapes of the transported object support carriage and the work floor carriage are substantially rectangular in a plan view, and in the first transported object transport path, the longitudinal length of the transported object support carriage is the longitudinal length of the automobile. It is set shorter than
At the downstream side of the merging part where the upstream second conveyed object conveyance path merges with the closed path, or at the merging part, the conveyed object support carriage and the work floor carriage are connected, and from the closed path The work floor carriage is separated from the connection carriage at the upstream side of the branching section where the downstream second transported object conveyance path branches, or at the branching section,
The work floor cart circulates in the closed path,
A plurality of the first object to be conveyed the conveying path, Ri Na between these paths connecting the second object to be conveyed the conveying path,
In the plurality of first conveyed object conveyance paths,
The downstream second transported object transport path downstream of the downstream first transported object transport path of the first transported object transport path on one side;
Between the upstream second transported object transport path upstream of the upstream first transported object transport path of the other first transported object transport path,
A transport path on which only the transported object support cart in a state of supporting the automobile travels,
In the transport route,
Wherein the rectangular shape in plan view of the long side of the object to be conveyed support carriage is conveying direction, the longitudinal direction of the vehicle, characterized that you orthogonal to the conveying direction.

According to such a configuration, the first transported object constituted by the upstream first transported object transport path and the downstream first transported object transport path which are adjacent to each other in parallel and whose transport directions are opposite to each other. Since the work floor bogie travel route is connected between the downstream side and the upstream side of the material transport route, the work floor bogie travel route, which is the return route of the work floor cart, becomes very short. Since the number of work floor trolleys traveling in the trolley travel route can be greatly reduced, the manufacturing cost of the work floor trolley travel route and the work floor trolley can be reduced, and the space occupied by the work floor trolley travel route is very small.
In addition, the work floor cart circulates in a closed route constituted by the first transport object transport route and the work floor cart travel route. Only travels on the object support carriage. When the transport direction of the transported object support carriage in the second transported object transport path is the same as the transport direction of the transported object support carriage in the first transported object transport path, the longitudinal length of the transported object support carriage Is shorter than the length of the vehicle in the front-rear direction, the accommodation interval of the front and rear transport object support carts can be reduced so that the distance between the front and rear vehicles adjacent to each other in the second transport object transport path is reduced. It becomes possible. Therefore, even if the second transported object transport path is relatively short, a relatively large number of transported object support carts can be accommodated. Here, in general, it is required to accommodate a certain number of automobiles for adjustment of production time difference between a plurality of work paths. However, in the cart transport apparatus according to the present invention, a relatively short transport path Since a relatively large number of transported object supporting carts can be accommodated on the upper side, the transport path between work paths for accommodating the required number of automobiles for adjusting the production time difference can be shortened. Occupied space is reduced.

In addition, an upstream first transport object transport path, and a first downstream transport path, which are connected in parallel and whose transport directions are opposite to each other, travel a connected cart that connects the transport object support cart and the work floor cart. Since there are a plurality of first transported object transport paths configured by transported object transport paths, and the second transported object transport path on which only the transported object support carriage travels is provided between these work paths, the work contents are different. A plurality of work paths can be freely arranged as required.
Furthermore, in the plurality of first transported object transport paths, the downstream second transported object transport path downstream of the first transported object transport path on the downstream side of the first transported object transport path, and the other Only the transported object supporting carriage in the state of supporting the automobile, provided between the first transported object transport path and the upstream second transported object transport path upstream of the first transported object transport path. In the transport path on which the vehicle travels, the long side of the object-supporting carriage in the plan view is the transport direction, and the longitudinal direction of the automobile is orthogonal to the transport direction, so workability at the longitudinal end of the automobile is improved. The distance between the automobiles can be improved, and the total length of the work process can be shortened.

In addition, it is preferable that a plurality of the first object transport paths are arranged in parallel.
According to such a configuration, the upstream first transported object transport path, in which the transported carriage supporting the transported object support carriage and the work floor carriage travels, is adjacent to each other and the transport directions are opposite to each other, In addition, a plurality of first transport object transport paths configured by the first transport object transport path on the downstream side are provided, and these are arranged in parallel, so that a square overall layout is possible compared to the case of arranging them in series. become.

Furthermore, it is preferable that a plurality of the first object transport paths are arranged in series.
According to such a configuration, the upstream first transported object transport path, in which the transported carriage supporting the transported object support carriage and the work floor carriage travels, is adjacent to each other and the transport directions are opposite to each other, And a plurality of first transport object transport paths configured by the first transport object transport path on the downstream side, and these are arranged in series, so that a vertically long overall layout is possible compared to the case of arranging them in parallel become.

Furthermore, it is preferable to use the work floor carriage in which one or both of the shape and the size according to the work content of each work process is different in the plurality of first conveyed object conveyance paths.
In the cart transport device of the present invention, the work floor cart circulates in a closed path constituted by the first transported material transport route and the work floor cart travel route, so that the shape and size of the plurality of first transported material transport routes are increased. Work floor carts with different one or both can be used.
Therefore, the work floor in which one or both of the shape and the size according to the work content of each work process in the plurality of first transported object transport paths, such as a change in the transport interval of the automobile and a change in the shape of the tool storage unit, are different. By using a cart, work efficiency can be improved.

In addition, it is preferable that supply of parts to be assembled to the automobile or loading / unloading of parts storage shelves is performed on the work floor carriage on the work floor carriage travel route.
Parts necessary for each automobile are accommodated in a parts accommodation shelf provided on the carriage, and an operator takes out necessary parts for each process from the parts accommodation shelf and performs assembly work on the automobile . In that case, a parts supply process is usually required in which parts or parts shelves containing parts are placed on the carriage before the entrance of the work process. Normally, a part supply process for supplying parts to the work floor carriage is required, so that a useless space increases on the upstream side of the work process.
In the cart transportation device of the present invention, since the work floor cart circulates in the closed route constituted by the first transported material transport route and the work floor cart traveling route, the work floor cart circulates for each work process in this way. By utilizing the features, parts used for each work process can be supplied by a transport unit having only a work floor carriage, so that waste of space can be eliminated.

As described above, according to the cart conveyance device according to the present invention,
(A) Since the route length of the work floor bogie travel route, which is the return route of the work floor bogie, becomes very short, the number of work floor carts traveling along the work floor bogie travel route can be greatly reduced. The manufacturing cost of the bogie travel route and work floor bogie can be reduced, and the occupied space of the work floor bogie travel route can be very small.
(A) When the transport direction of the transport object support carriage in the second transport object transport path is the same as the transport direction of the transport object support carriage in the first transport object transport path, the front-rear direction of the transport object support carriage Since the length is shorter than the length in the front-rear direction of the automobile , the accommodation interval of the front and rear conveyed object support carts can be reduced so that the distance between the adjacent automobiles in the second conveyed object conveyance path is reduced, Even when the second transport object transport path is relatively short, a relatively large number of transport object support carts can be accommodated, and therefore there is a transport path between work paths that accommodates the required number of vehicles for production time difference adjustment. Because it is shortened, the manufacturing cost can be reduced, and the occupied space of the transport path can be reduced.
(C) A plurality of first transported object transport paths are provided, and a plurality of work paths having different work contents are provided by setting a second transported object transport path on which only the transported object support cart travels between these work paths. Can be arranged freely as needed,
(D) The downstream second transported object transport path downstream of the first transported object transport path on the downstream side of the first transported object transport path in the plurality of first transported object transport paths, and the other Only the transported object support carriage in the state of supporting the automobile, provided between the first transported object transport path and the upstream second transported object transport path upstream of the first transported object transport path. In the transport path that travels, the long side of the transported object support cart in a rectangular shape in plan view is the transport direction, and the longitudinal direction of the automobile is orthogonal to the transport direction, so workability at the longitudinal end of the automobile is improved. In addition, since the distance between cars can be reduced, the overall length of the work process can be shortened.
(E) Work floors that differ in one or both of the shape and size according to the work contents of each work process in the plurality of first transported object transport paths, such as a change in the transport interval of the automobile and a change in the shape of the tool storage unit By using a cart, work efficiency can be improved,
There are remarkable effects such as.

It is a schematic layout figure of the trolley | bogie conveyance apparatus which concerns on Embodiment 1 of this invention. It is the schematic side view which looked at the downstream 1st to-be-conveyed object conveyance path | route similarly from the right side. In Embodiment 1, the partially enlarged outline showing an example in which the transport direction of the transport object support carriage in the second transport object transport path is the same as the transport direction of the transport object support carriage in the first transport object transport path. FIG. It is a schematic layout figure of the trolley | bogie conveyance apparatus which concerns on Embodiment 2 of this invention. FIG. 10 is a partially enlarged schematic layout diagram showing parts supply locations in the second embodiment. In the second embodiment, an example is shown in which the transport direction of the transport object support carriage in a part of the second transport object transport path is the same as the transport direction of the transport object support carriage in the first transport object transport path. It is a partial expansion schematic layout figure. It is a schematic layout figure of the trolley | bogie conveyance apparatus which concerns on Embodiment 3 of this invention.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments shown in the accompanying drawings, and includes all the embodiments that satisfy the requirements described in the claims. It is a waste.
In the present specification, the front, rear, left and right are referred to in the transport direction of the transported object.

Embodiment 1 FIG.
As shown in the schematic layout diagram of FIG. 1 and the schematic side view of FIG. 2, the cart transport apparatus 1 according to Embodiment 1 of the present invention transports a cart along a predetermined transport path and is transported. A work floor carriage 3 on which an operator rides and works on a transported object support carriage 2 that supports an object W is configured to be connectable and separable.
The predetermined transport path includes a first transported object transport path L1 on which a connecting cart 4 in which a work floor cart 3 is connected to the rear side of the transported object support cart 2 and a second transported vehicle 2 on which only the transported object support cart 2 travels. It includes a transported object transport route L2 and a work floor cart travel route L3 on which only the work floor cart 3 travels.
Note that the connecting cart 4 may be one in which the work floor cart 3 is connected to one or both of the front and rear of the transported object support cart 2, and the work floor cart 3 is connected to and separated from the transported object support cart 2. The connecting means for enabling the configuration may be one of various commonly used configurations.

The transported object W has, for example, a substantially rectangular shape in plan view, and is transported in a state that is long in the front-rear direction on the first transported object transport path L1.
Moreover, the to-be-conveyed object support cart 2 has a substantially rectangular shape in plan view, and in the first to-be-conveyed object conveyance path L1, for example, the short side of the rectangle is the front-rear direction. The length of the short side) is set to be shorter than the length of the transported object W in the front-rear direction.
Further, the work floor carriage 3 has a substantially rectangular shape in plan view, and the length in the front-rear direction conveys the connected carriages 4, 4,. In this case, the length is set so that the front and rear objects W, W,... Do not interfere with each other.
Here, the transported object supporting carriage 2 and the work floor carriage 3, and the connecting carriage 4 to which these carriages 2 and 3 are connected are a friction roller type driving device in which the driven surface on the side face of the carriage is arranged at a required position. Since it is driven by F, F,..., It travels on the track R and rotates 90 ° around the vertical axis by the turntables T1, T2, T3, T4.

The first transported object transport path L1 is formed by an upstream first transported object transport path L1A and a downstream first transported object transport path L1B which are adjacent in parallel and have transport directions G1 and G2 opposite to each other. Composed.
The second transported object transport path L2 is downstream of the upstream first transported object transport path L2A on the upstream side of the upstream first transported object transport path L1A and the downstream first transported object transport path L1B. It is comprised by the downstream 2nd to-be-conveyed material conveyance path | route L2B.
Furthermore, between the downstream side of the first transported object transport path 1 (downstream side of the downstream first transported object transport path L1B) and the upstream side (upstream side of the upstream first transported object transport path L1A). The work floor carriage travel route L3 is connected to form a closed path A by the first transported object transport path L1 and the work floor carriage travel path L3, and the work floor carriage 3 circulates in the closed path A.
On the downstream side C of the junction B where the upstream second conveyed object conveyance path L2A merges with the closed path A, the conveyed object support carriage 2 and the work floor carriage 3 are connected to the closed path A, and the downstream side The work floor carriage 3 is separated from the connection carriage 4 on the upstream side E of the branching section D where the two conveyed object conveyance path L2B branches.
Note that the transported object support carriage 2 and the work floor carriage 3 may be connected at the junction B, and the work floor carriage 3 may be separated from the connection carriage 4 at the branch portion D.

In the schematic layout diagram of FIG. 1, in the upstream first conveyed object conveyance path L1A, the coupled carriage 4 in which the conveyed object support carriage 2 and the work floor carriage 3 are coupled on the downstream side C of the junction B is in the conveyance direction. .. Is fast forwarded to G1 and catches up with the preceding connecting cart 4, and the front and rear connecting carts 4, 4,... Are transported together without any gaps. It can be set as the work process which gets in and carries out the assembly | attachment operation | work of components, etc. with respect to the to-be-conveyed object W.
The leading connecting cart 4 of the upstream first transported object transport path L1A is fast-forwarded in the transport direction G1 and is transported onto the turntable T1 while being separated from the subsequent connecting carts 4, 4,. After rotating 90 ° around the vertical axis, it is conveyed onto the turntable T2 and rotated 90 ° around the vertical axis by the turntable T2. Then, it is fast-forwarded and catches up with the connecting cart 4 that precedes the downstream first transported object transport path L1B. And in the downstream side first transported object transport path L1B, the front and rear connecting carts 4, 4,... Are transported together without gaps, so that the operator can work on the transport floor carts 3, 3,. It can be set as the work process which gets in to ... and performs the assembly | attachment operation | work of components with respect to the to-be-conveyed object W, etc.
As indicated by the two-dot chain line arrow on the left side of FIG. 1, the transported object support carriage 2 and the work floor carriage 3 are separated from each other at the position of the turntable T1, and only the transported object support carriage 2 is routed along another path L2C. You may make it connect the to-be-conveyed object support trolley 2 and the work floor trolley | bogie 3 in the position of turntable T2.

The transported object support carriage 2 separated from the work floor carriage 3 on the upstream side E of the branching part D is transported from the branching part D to the downstream second transported object transport path L2B.
The work floor carriage 3 separated from the transferred object support carriage 2 on the upstream side E of the branching section D enters the work floor carriage travel path L3 from the downstream first transferred object transfer path L1B, and is transferred onto the turntable T3. Then, after being rotated 90 ° around the vertical axis by the turntable T3, it is conveyed onto the turntable T4 and rotated 90 ° around the vertical axis by the turntable T4. Then, it enters the upstream first conveyed product transport path L1A from the junction B.
And, as described above, the work bed carriage 3 is located on the downstream side C of the junction B, and the work support carriage that has entered the upstream first transported object transport path L1A from the upstream second transported object transport path L2A. 2 is connected.

  According to the configuration of the cart transport apparatus 1 of the first embodiment, the upstream first transported object transport path L1A and the downstream first transported object that are adjacent in parallel and have the transport directions G1 and G2 opposite to each other. Since the work floor carriage travel path L3 is connected between the downstream side and the upstream side of the first transported object conveyance path 1 configured by the object conveyance path L1B, the work floor carriage that is the return path of the work floor carriage 3 Since the route length of the travel route L3 becomes very short, the number of the work floor carts 3 traveling in the work floor cart travel route L3 can be extremely reduced. Therefore, the work floor cart travel route L3 and the work floor carts 3, 3 ,... Can be reduced, and the space occupied by the work floor bogie travel route L3 becomes very small.

Further, since the work floor carriage 3 circulates in the closed path A constituted by the first transport object transport path L1 and the work floor truck travel path L3, a transport path other than this circulation path, that is, the second transport object. Only the transported object support carriage 2 travels on the transport path L2. As shown in the partially enlarged schematic layout diagram of FIG. 3, in the first embodiment, the transport direction of the transported object support carriage 2 in the second transported object transport path L2 (L2A, L2B) is defined as the first transported object. When the transport direction of the transport object support carriage 2 in the transport path L1 (see FIG. 1) is the same (when the rectangular short side of the transport object support truck 2 is the front-rear direction), the transport object support Since the front-rear direction length of the carriage 2 is shorter than the front-rear direction length of the transported object W, the distance between the transported objects W adjacent to each other in the second transported object transport path L2 (the transported object W, It is possible to reduce the accommodation interval between the front and rear transport object supporting carriages 2 and 2 so that the interval (W) d is reduced. Therefore, even when the second transport object transport path L2 is relatively short, a relatively large number of transport object support carts 2, 2,. Here, it is generally required to accommodate a certain number of articles to be conveyed W, W,... For adjusting the production time difference between the plurality of work paths. 1 can accommodate a relatively large number of transported object supporting carriages 2, 2,... On a relatively short transport path, so that a work path for accommodating a required number of transported objects W, W,. Since the conveyance path in between is shortened, the manufacturing cost can be reduced and the space occupied by the conveyance path is reduced.
In the second conveyed object conveyance path L2 in FIG. 3, the preceding and following conveyed object support carriages 2, 2,... It is stopped by carriage stoppers S, S,... Provided at intervals greater than the length. In this state, first, the downstream stopper S is released and the conveyance of the downstream carriage 2 is started, and then the downstream carriage 2 is conveyed to a position where it does not interfere even if the upstream carriage 2 is conveyed to the downstream stopper S. At the time, the upstream stopper S is released and the upstream carriage 2 is conveyed.
Here, the transported object supporting carriage 2 transported from the upstream second transported object transport path L2A to the junction B is rotated 90 ° around the vertical axis by the turntable T11 and then to the downstream C of the merger B. Be transported. Moreover, the to-be-conveyed object support carriage 2 conveyed to the branch part D is rotated by 90 ° around the vertical axis by the turntable T12 and then conveyed to the second downstream conveyed object conveyance path L2B.

In the configuration of the cart transport apparatus 1 of the first embodiment, the case where the first transport object transport path L1 is singular is shown, but a plurality of the first transport object transport paths L1 are provided, and between these paths L1, L1. May be connected by the second transported object transport path L2.
According to such a configuration, the upstream side first, in which the transporting carriage 4 connecting the transported object supporting carriage 2 and the work floor carriage 3 travels, and the conveyance directions G1 and G2 are opposite to each other in parallel. A plurality of first transport object transport paths 1 constituted by the transport object transport path L1A and the downstream first transport object transport path L2B are provided, and only the transport object support carriage 2 is provided between these work paths L1 and L1. Therefore, a plurality of work paths having different work contents can be freely arranged as necessary.
For example, it is easy to adopt a configuration as in the following second and third embodiments.

Embodiment 2. FIG.
FIG. 4 is a schematic layout diagram of the cart transport apparatus 1 according to Embodiment 2 of the present invention in which two first transported object transport paths L1 and L1 (see α1 and α2 in the figure) are arranged in parallel. The same reference numerals as those in Embodiment 1 denote the same or corresponding parts. Detailed description of the same reference numerals as those in the first embodiment will be omitted.
The transported object support carriage 2 separated from the work floor carriage 3 on the upstream side E of the branch part D of the first transported object transport path L1 (see α1 in the figure) is connected to the first transported object transport path from the branch part D. It is transported to the downstream second transported object transport path L2B downstream of L1 (see α1 in the figure), rotated 90 ° around the vertical axis by the turntable T7, and then transported in the transport direction H1.
The transport object support carts 2 at the head of the transport object supporting carriages 2, 2,... Transported in the transport direction H1 are fast-forwarded in the transport direction H1 and separated from the subsequent transport object support carts 2, 2,. Then, it is transported onto the turntable T8, rotated 90 ° around the vertical axis by the turntable T8, then transported onto the turntable T9, and rotated 90 ° around the vertical axis by the turntable T9. After that, it is fast-forwarded and transported in the transport direction H2, and catches up with the preceding transported object support cart 2.
In this way, the process L2D for transporting the transported object supporting carriages 2, 2,... In the transport directions H1 and H2 can be a work process for performing assembly work of parts on the transported object W.

The leading transport object supporting carriage 2 transported in the transport direction H2 is fast-forwarded in the transport direction H2 and is transported onto the turntable T10 away from the subsequent transport object supporting carriages 2, 2,. After rotating 90 ° around the vertical axis by the table T10, the first transported object transport path from the upstream second transported object transport path L2A upstream of the first transported object transport path L1 (see α2 in the figure). It is conveyed to the junction B of L1 (see α2 in the figure).
The transported object supporting carriage 2 separated from the work floor carriage 3 on the upstream side E of the branch part D of the first transported object transport path L1 (see α2 in the figure) is the second transported object downstream from the branch part D. After being transported to the transport path L2B, rotated 90 ° around the vertical axis by the turntable T5, transported in the transport direction I, and rotated 90 ° about the vertical axis by the turntable T6, then the first transported object transport path L1 From the upstream second transported object transport path L2A upstream of (refer to α1 in the figure), it is transported to the junction B of the first transported object transport path L1 (refer to α1 in the figure).
Here, the article to be conveyed W is carried in from the carry-in part J on the downstream side in the carrying direction I and carried out from the carry-out part K on the upstream side in the carrying direction I.

The layout of the cart transport apparatus 1 according to the second embodiment of the present invention shown in FIG. 4 can be used, for example, in an automobile production line, and a connected cart 4 in which a work floor cart 3 is coupled to a transported object support cart 2. The first transported object transport path L1 (refer to α1 in the figure) and the first transported object transport path L1 (refer to α2 in the figure) that travels are respectively referred to as a trim process, a final process, and a first transported object transport path. It is preferable that the second transport object transport path L2D (the path where the transport object W is supported by the transport object supporting carriage 2) on which only the transport object supporting carriage 2 between L1 and L1 travels is a chassis process. It is.
In that case, as shown in FIG. 4, the second object to be conveyed direction Cartesian to the conveying direction in the longitudinal direction of the automobile W at the conveyance path L2D (object to be conveyed a long side of the rectangular support carriage 2 is chassis step ) In the longitudinal direction, the workability at the longitudinal end of the automobile W is improved, and the distance between the automobiles W and W can be reduced, so that the total length of the work process can be shortened.

According to the configuration of the cart transport apparatus 1 according to the second embodiment, the transport cart 4 that connects the transport object support cart 2 and the work floor cart 3 travels, and the transport directions are opposite to each other in parallel. Since there are a plurality of first transported object transport paths L1 configured by the upstream first transported object transport path L1A and the downstream first transported object transport path L1B, and these are arranged in parallel, Compared to the case of arranging in a rectangular shape, a square overall layout becomes possible.
Further, in the cart transport device 1, the work floor carts 3, 3,... Circulate through the closed route A constituted by the first transported material transport routes L1 L1A and L1B and the work floor cart travel route L3. , Work floor carriages 3, 3,... Having different shapes and / or sizes in the plurality of first transported object transport paths L1, L1 (α1 and α2) can be used.
Therefore, such as a change in the transfer interval of the transfer object W and a change in the shape of the tool storage unit, and the like according to the work content of each work process in the plurality of first transfer object transfer paths L1, L1 (α1 and α2) By using the work floor carriages 3, 3,... Having different sizes or both, work efficiency can be improved.

Here, the parts necessary for each transported object W are accommodated in a parts storage shelf provided on the carriage, and an operator takes out the necessary parts for each process from the parts storage shelf and is transported W Perform assembly work. In that case, a parts supply process is usually required in which parts or parts shelves containing parts are placed on the carriage before the entrance of the work process. Normally, a part supply process for supplying parts to the work floor carriage 3 is required, so that a useless space increases on the upstream side of the work process.
In the trolley transport device 1, the work floor trolleys 3, 3,... Circulate through the closed path A constituted by the first transported object transport route L1 and the work floor trolley travel route L3. .., 3... Are circulated for each work process, and each of them is transported by only the work floor carriages 3, 3... (See, for example, the component supply points M 1 and M 2 in the partially enlarged schematic layout diagram of FIG. 5). Since parts used for each work process can be supplied, waste of space can be eliminated.

Further, as shown in the partial enlarged schematic layout diagram of FIG. 6, in the second embodiment, the transport direction of the transported object support carriage 2 in the part L2A of the second transported object transport path L2 is defined as the first transported object. When the transport direction of the transport object supporting carriage 2 in the transport path L1 (see FIG. 4) is the same (when the short side of the rectangular shape of the transport object support truck 2 is the front-rear direction), the transport object support carriage 2 is shorter than the length of the transported object W in the front-rear direction, so that the distance between the transported objects W and W adjacent in the front-rear direction in the part L2A of the second transported object transport path L2 (transported) It is possible to reduce the accommodation interval of the front and rear transport object support carts 2 and 2 so that the distance d between the objects W and W is reduced. Therefore, even if part L2A of the second transported object transport path is relatively short, a relatively large number of transported object support carts 2, 2,. Here, it is generally required to accommodate a certain number of articles to be conveyed W, W,... For adjusting the production time difference between the plurality of work paths. 1 can accommodate a relatively large number of transported object supporting carriages 2, 2,... On a relatively short transport path, so that a work path for accommodating a required number of transported objects W, W,. Since the conveyance path in between is shortened, the manufacturing cost can be reduced and the space occupied by the conveyance path is reduced.
In addition, in the part L2A of the second conveyed object conveyance path in FIG. 6, the preceding and following conveyed object supporting carriages 2, 2,... It is stopped by carriage stoppers S, S,... Provided at intervals equal to or longer than the length of the object W. In this state, first, the downstream stopper S is released and the conveyance of the downstream carriage 2 is started, and then the downstream carriage 2 is conveyed to a position where it does not interfere even if the upstream carriage 2 is conveyed to the downstream stopper S. At the time, the upstream stopper S is released and the upstream carriage 2 is conveyed.

Embodiment 3 FIG.
FIG. 7 is a schematic layout diagram of the cart transport apparatus 1 according to Embodiment 3 of the present invention in which two first transported object transport paths L1 and L1 (see β1 and β2 in the figure) are arranged in series. The same reference numerals as those in Embodiments 1 and 2 denote the same or corresponding parts. Detailed description of the same reference numerals as those in the first and second embodiments will be omitted.
The transported object supporting carriage 2 separated from the work floor carriage 3 on the upstream side E of the branching part D of the first transported object transporting path L1 (see β1 in the figure) is connected to the first transported object transporting path from the branching part D. An upstream second conveyed object that is conveyed to the downstream second conveyed object conveying path L2B downstream of L1 (see β1 in the figure) and upstream of the first conveyed object conveying path L1 (see β2 in the figure). From the conveyance path L2A, it is conveyed to the junction B of the first conveyed object conveyance path L1 (see β2 in the figure).
The transported object support carriage 2 separated from the work floor carriage 3 on the upstream side E of the branch part D of the first transported object transport path L1 (see β2 in the figure) is connected to the first transported object transport path from the branch part D. An upstream second conveyed object that is conveyed to the downstream second conveyed object conveyance path L2B downstream of L1 (see β2 in the figure) and upstream of the first conveyed object conveying path L1 (see β1 in the figure). From the conveyance path L2A, it is conveyed to the junction B of the first conveyed object conveyance path L1 (see β1 in the figure).
Here, the conveyed object W is carried in from the carry-in part J on the upstream side of the first conveyed object conveyance path L1 (see β1 in the figure), and downstream of the first conveyed object conveyance path L1 (see β2 in the figure). Unloaded from the unloading section K on the side.

The layout of the cart transport apparatus 1 according to Embodiment 3 of the present invention shown in FIG. 7 can be used, for example, in an automobile production line, and a connected cart 4 in which a work floor cart 3 is coupled to an object support cart 2. The first transported object transport path L1 (refer to β1 in the figure) and the first transported object transport path L1 (refer to β2 in the figure) that travels are respectively referred to as a trim process, a final process, and a first transported object transport path. The second transported object transport path L2 D (the path where the transported object W is supported by the transported object support carriage 2) on which only the transported object support carriage 2 between L1 and L1 travels may be a chassis process. Is preferred.
In that case, as shown in FIG. 7, the second object to be conveyed direction Cartesian to the conveying direction in the longitudinal direction of the automobile W at the conveyance path L2D (object to be conveyed a long side of the rectangular support carriage 2 is chassis step ) In the longitudinal direction, the workability at the longitudinal end of the automobile W is improved, and the distance between the automobiles W and W can be reduced, so that the total length of the work process can be shortened.

According to the configuration of the cart transport apparatus 1 according to the third embodiment, the transport cart 4 that connects the transport object support cart 2 and the work floor cart 3 travels, and the transport directions are adjacent to each other in the opposite directions. The first transported object transport path L1A on the upstream side and the first transported object transport path L1B composed of the downstream first transported object transport path L1B are provided, and these are arranged in series. Compared with the case of arranging in a vertical direction, a vertically long overall layout is possible.
Further, as in the second embodiment, work floor trolleys having different shapes or sizes can be used in the plurality of first transported object transport paths L1, L1 (β1 and β2). One or both of the shape and size according to the work content of each work process in the plurality of first transported object transport paths L1 and L1 (β1 and β2), such as a change in the transport interval and a change in the shape of the tool storage unit, By using different work floor carriages 3, 3,..., Work efficiency can be improved.
Further, similarly to the second embodiment, the cart transportation device 1 circulates the work floor carts 3, 3,... In the closed route A constituted by the first transported material transport route L1 and the work floor cart traveling route L3. Therefore, by utilizing the feature that the work floor carts 3, 3,... Circulate for each work process in this way, only the work floor carts 3, 3,. Since the parts used for each work process can be supplied at the locations M1 and M2, the waste of space can be eliminated.

A Closed path B Junction part C Downstream side of the junction part D Branch part E Upstream side of the branch part Friction roller type driving devices G1, G2, H1, H2, I Transport direction J Carry-in part K Carry-out part L1 First transported Object transport path L1A Upstream first transport object transport path L1B Downstream first transport object transport path L2 Second transport object transport path L2A Upstream second transport object transport path L2B Downstream second transport object Path L2C Another path L2D that transports only the transported object supporting carriage L2D The second transported object transport path L3 that is a chassis process Work floor carriage travel path M1, M2 Parts supply point R Track S Carriage stoppers T1 to T12 Turntable W Transported Objects α1, α2, β1, β2 First transport object transport path 1 Cart transport device.
2 Carriage support cart 3 Work floor cart 4 Linked cart

Claims (5)

It is a cart transport device that transports a cart along a predetermined transport path, capable of connecting / separating a work floor cart on which a worker rides on a transported support cart that supports the transported object,
The predetermined transport path is a first transported object transport path on which a connected cart in which the work floor cart is connected to at least one of the transported carrier support carts before and after the transport direction, and only the transported object support cart travels. Including a second transported object transport path and a work floor carriage travel path on which only the work floor carriage travels,
The first transported object transport path is configured by an upstream first transported object transport path and a downstream first transported object transport path that are adjacent to each other in parallel and whose transport directions are opposite to each other.
The second transported object transport path is an upstream second transported object transport path upstream of the upstream first transported object transport path, and downstream of the downstream first transported object transport path. Side second transported object transport path,
A downstream path and an upstream side of the first transported object transport path are connected by the work floor carriage travel path, and a closed path is formed by the first transport object transport path and the work floor truck travel path. ,
The conveyed object is an automobile,
The shapes of the transported object support carriage and the work floor carriage are substantially rectangular in a plan view, and in the first transported object transport path, the longitudinal length of the transported object support carriage is the longitudinal length of the automobile. It is set shorter than
At the downstream side of the merging part where the upstream second conveyed object conveyance path merges with the closed path, or at the merging part, the conveyed object support carriage and the work floor carriage are connected, and from the closed path The work floor carriage is separated from the connection carriage at the upstream side of the branching section where the downstream second transported object conveyance path branches, or at the branching section,
The work floor cart circulates in the closed path,
A plurality of the first object to be conveyed the conveying path, Ri Na between these paths connecting the second object to be conveyed the conveying path,
In the plurality of first conveyed object conveyance paths,
The downstream second transported object transport path downstream of the downstream first transported object transport path of the first transported object transport path on one side;
Between the upstream second transported object transport path upstream of the upstream first transported object transport path of the other first transported object transport path,
A transport path on which only the transported object support cart in a state of supporting the automobile travels,
In the transport route,
Wherein the rectangular shape in plan view of the long side of the object to be conveyed support carriage is conveying direction, carriage conveying apparatus in which the longitudinal direction of the vehicle, characterized that you orthogonal to the conveying direction.   The trolley transfer device according to claim 1, wherein a plurality of the first transfer objects transfer paths are arranged in parallel.   The cart transport apparatus according to claim 1, wherein a plurality of the first transported object transport paths are arranged in series.   The work floor carriage according to any one of claims 1 to 3, wherein the work floor carriage is different in one or both of a shape and a size in accordance with the work content of each work process in the plurality of first transported object transport paths. The cart transport device according to item. The cart conveyance device according to any one of claims 1 to 4, wherein the work floor cart is configured to supply parts for assembly to the automobile or unload a parts storage shelf to the work floor cart along the travel route of the work floor cart. .

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