JP2016141550A - Carriage conveying conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carriage conveying conveyor that can secure working areas in front of and behind a work-piece in each conveyed carriage by a simple mechanism while shortening the whole length of the conveyor.SOLUTION: A carriage conveying conveyor 10 is configured to allow a plurality of conveyed carriages 1, on which is mounted a work-piece W so that the longitudinal direction of the work piece is in parallel with a conveying direction, to be tandemly connected and to be moved in one direction along a track 2. The conveyed carriages are provided with: bases 11 having work areas FS and BS, which move along the track and correspond to working in front of and behind the work-piece, formed so as to be shielded by the work-piece from above; slide tables 12 formed to be movable parallely in the conveying direction on the bases while being mounted with the work-piece; and a table moving mechanism 3 that connects the bases to the slide tables. A guide rail 4 that engages with the table moving mechanism is arranged along the track. The table moving mechanism 3 moves the slide tables in a direction in which shielding of the work areas by the work-pieces is released in a process of working in the work areas.SELECTED DRAWING: Figure 1

Description

  The present invention relates to, for example, a carriage transport conveyor used in a vehicle assembly line for assembling vehicle components to a vehicle mounted on a transport carriage, and in particular, a carriage transport for mounting and transporting a plurality of types of vehicles having different vehicle lengths on the transport carriage. Conveyor related.

  For example, a vehicle assembly line is provided with a carriage conveyor that connects a plurality of carriages mounted with vehicles in a column and conveys between processes in a predetermined direction at a predetermined speed using a friction drive device or the like. ing. If the number of steps is not changed, the length of the conveyor in the carriage conveyor is determined by the front and rear length of the carriage. The front-rear length of the transport carriage is determined by adding the front-rear length of the mounted vehicle and the front-rear length of the work area provided on the transport carriage corresponding to the work before and after the vehicle. Therefore, in order to increase the space efficiency of the factory and reduce the equipment cost by making the carriage conveyor compact, the front and back length of the work area provided on the carriage is minimized in response to the work before and after the mounted vehicle. It is requested to do.

  However, as shown in FIG. 7 (a), in the cart transport conveyor 100, a plurality of types of vehicles (short) W 1, vehicles (medium) W 2, and vehicles (long) W 3 having different longitudinal lengths of the vehicles are transport carts 101. When mounted, in order to secure a work area necessary for each transport carriage 101, it is necessary to set the longitudinal length of the transport carriage 101 based on the longest vehicle (long) W3. Therefore, useless spaces S1 and S2 are generated in the front and rear of the vehicle on the transport carriage 101 on which the vehicle (short) W1 and the vehicle (medium) W2 having a short front and rear length are mounted. As a result, the front and rear length of the transport carriage 101 becomes longer than necessary, and the entire carriage transport conveyor 100 becomes redundant, resulting in a problem that the space efficiency in the factory is reduced and the equipment cost is increased.

  To cope with this, as shown in FIG. 7B, for example, the front and rear length of the transport carriage 101B is set to be substantially the same as the front and rear length of the longest vehicle (long) W3. It is also possible to shorten the overall length of the carriage transport conveyor 100B by moving the front and rear positions of the vehicle with respect to the carriage 101B only in a process that requires a zone. However, on which transporting carriage 101B a plurality of types of vehicles (short) W1, vehicles (medium) W2, and vehicles (long) W3 are mounted varies depending on daily device information. Therefore, as shown in FIG. 8, the base 102B formed so as to be movable in the transport direction and the vehicle are mounted so that the longest vehicle (long) W3 may be mounted on all the transport carts 101B. The slide table 103B that can be translated in the transport direction (front and rear) on the base and the drive device 104B that moves the slide table must be provided. As a result, there is a problem that the equipment cost of the transport carriage 101B is greatly increased and the handling of the drive circuit connected to the drive device 104B becomes complicated.

In relation to this problem, for example, Patent Document 1 discloses a conveyance device for a workpiece or the like that does not require a dedicated drive source or a related mechanism.
As shown in FIG. 9, the transport apparatus 200 disclosed in Patent Document 1 is a rotary base that holds a transported object W on a transport carriage 201 that is guided by a travel guide rail 202 and travels linearly in a reciprocating manner. 203 is provided via a rotating shaft 204, an arm 205 oriented in a certain direction on the rotating shaft 204 is fixed perpendicularly to the axis of the rotating shaft, a roller follower 206 is attached to the tip of the arm 205, and a bent portion Rotating guide rails 207 having 207a are arranged along the traveling guide rails 202, and the roller followers 206 are guided to the rotating guide rails 207.

  According to the transport carriage 201 of Patent Document 1 described above, the rotary table 203 whose tip is directed to the unloading position C at the loading position A is rotated 90 ° counterclockwise during the conveyance B, and is further rotated while reaching the unloading position C. It can be rotated by 90 ° clockwise and rotated by 180 ° between the carry-in position A and the carry-out position C. Thus, in rotating the direction while transporting the conveyed product W from the carry-in position A to the carry-out position C, the turntable 203 is transferred to the transport carriage 201 by the arm 205 and the rotation guide rail 207 that guides the arm. Therefore, a complicated and expensive dedicated drive source and related mechanism can be dispensed with.

Japanese Utility Model Publication No. 59-19233

However, in the transport cart 201 of Patent Document 1, the rotary table 203 can be arbitrarily moved with the travel movement of the transport cart 201 by the arm 205 fixed to the rotary table 203 and the rotation guide rail 207 that guides the arm. Therefore, there is a problem that it is difficult to use for a transport carriage having a slide table that can be translated in the transport direction (front and rear) without rotating.
Further, since the transport carriage 201 of Patent Document 1 is guided by the travel guide rail 202 and travels linearly in a required distance, a plurality of transport carriages connected in a column are moved in one direction. It is not premised on using for the trolley | bogie conveyance conveyor to convey. In particular, the transport carriage 201 of Patent Document 1 includes a plurality of types of vehicles (short) W1, vehicles (medium) W2, and vehicles (long) that have different longitudinal lengths of vehicles (conveyed objects) as shown in FIG. When W3 is mounted on the transport cart 101B, there is no need (technical problem) to secure a work area before and after the vehicle in each transport cart 101B while shortening the overall length of the cart transport conveyor 100B. Not suggested.

  The present invention has been made in order to solve the above-described problems, and a plurality of transport carriages on which workpieces are mounted so that the longitudinal direction thereof is along the transport direction are connected in a tandem shape, and are moved in one direction along the track. An object of the present invention is to provide a cart transport conveyor that can secure a work area before and after a workpiece by a simple mechanism in each transport cart while shortening the overall length of the cart transport conveyor to be moved.

In order to solve the above-described problems, the cart conveyor according to the present invention has the following configuration.
(1) A carriage conveyor that connects a plurality of carriages that carry workpieces so that the longitudinal direction thereof is along the conveyance direction, and moves the carriages in one direction along a track,
The transport carriage moves along the track and a work area corresponding to the work before and after the work is formed so as to be shielded from above by the work, and the work is mounted on the work carriage. A slide table formed so as to be movable in parallel in a direction, and a table moving mechanism that connects the base and the slide table, and a guide rail that engages with the table moving mechanism is disposed along the track. about,
The table moving mechanism moves the slide table in a direction in which the work area is unshielded by the work in the step of working in the work area.

In the present invention, the carriage is moved along the track and a work area corresponding to the work before and after the work is formed so as to be shielded from above by the work, and the work is mounted on the work carriage. Since the slide table formed so as to be movable in parallel in the direction, and the table moving mechanism for connecting the base and the slide table, the guide rail that engages with the table moving mechanism is disposed along the track. A slide table on which a work is mounted in cooperation with the movement of the transport carriage through a table moving mechanism that engages with a guide rail disposed along the base, on which a work area corresponding to work before and after the work is formed In contrast, it can be translated in the transport direction. Therefore, it is possible to eliminate the need for a dedicated drive device and its drive circuit that translate the slide table in the transport direction with respect to the base.
In addition, the table moving mechanism moves the slide table in the direction in which the work area is unshielded by the work in the process of working in the work area, so that the base on which the work area corresponding to the work before and after the work is formed is formed. The required work area can be secured by moving the slide table on which the workpiece is mounted in the transport direction while shortening the longitudinal length of the workpiece. On the other hand, in the process of not working in the work area, the useless space of the transport carriage can be reduced by moving the slide table and shielding the work area not working with the work. Therefore, it is possible to secure a work area corresponding to work before and after the workpiece in each transport carriage while shortening the front and rear length of the transport carriage.
Therefore, according to the present invention, in the carriage conveyor that connects a plurality of carriages in which the workpieces are mounted so that the longitudinal direction thereof is along the conveyance direction, and is moved in one direction along the track, the conveyor total length is increased. It is possible to provide a cart transport conveyor that can secure a work area before and after the workpiece with a simple mechanism while shortening.

(2) In the carriage conveyor described in (1),
The guide rail is disposed below the transport carriage, and the table moving mechanism is configured to rotate in a horizontal direction around a shaft portion formed at a lower end of the base of the transport carriage. A moving member, a connecting member that connects the slide table to one end portion of the rotating member that is spaced from the shaft portion, and the other end portion that is engaged with the guide rail and spaced from the shaft portion of the rotating member. And a roller body formed on the surface.

  In the present invention, the guide rail is disposed below the transport carriage, and the table moving mechanism is formed to be rotatable in the horizontal direction around the shaft portion formed at the lower end of the base of the transport carriage. The rotating member, the connecting member that connects the slide table and the one end portion separated from the shaft portion of the rotating member, and the other end portion that is engaged with the guide rail and separated from the shaft portion of the rotating member. Since the roller body is provided, the table moving mechanism can be accommodated compactly in the base of each transport carriage and the space below the carriage between the slide table and the guide rail. Therefore, in a process that requires a work area, it is possible to secure a work area corresponding to work before and after the workpiece with each transport carriage without being obstructed by the table moving mechanism. As a result, the work area before and after the workpiece can be secured with a more compact table moving mechanism in each transport carriage.

(3) In the cart conveyance conveyor described in (2),
The guide rail includes a pair of parallel rail portions formed in parallel to the track in plan view, and an inclined rail portion formed in an inclined shape in plan view with respect to the track between the parallel rail portions. It is provided with.

  In the present invention, the guide rail includes a pair of parallel rail portions formed parallel to the track in plan view, and an inclined rail formed between the parallel rail portions so as to be inclined in plan view with respect to the track. When the transport carriage is moving in the transport direction with the roller body engaged with one of the parallel rail portions, the force to rotate the horizontal direction is not applied to the rotating member, The slide table can be stationary on the base. In addition, when the transport carriage moves in the transport direction with the roller body engaged with the inclined rail portion, a force that rotates the rotating member in the horizontal direction acts, and the slide table is fixed on the base. You can translate at speed. Therefore, a required work area can be ensured only by forming an inclined rail part between parallel rail parts corresponding to the process of working in a work area. In addition, the moving distance of the slide table can be easily adjusted only by changing the distance in the direction orthogonal to the conveying direction between the parallel rail portions. As a result, the work area before and after the workpiece can be secured with a simpler guide rail structure in each carriage.

(4) In the cart conveyance conveyor described in (2) or (3),
A plurality of types of workpieces having different workpiece lengths are mounted on the slide table, and the connector is formed to engage with the slide table only when a workpiece having a long workpiece length is mounted on the slide table. It is characterized by that.

  In the present invention, a plurality of types of workpieces having different workpiece lengths are mounted on the slide table, and the coupler is formed to engage with the slide table only when a workpiece having a long workpiece length is mounted on the slide table. Therefore, the work table before and after the workpiece in the workpiece having a long workpiece length can be secured by moving the slide table in parallel only for the workpiece having a long workpiece length. Therefore, useless movement of the slide table when a work having a short work length is mounted on the slide table can be avoided, and reduction in work efficiency associated with movement of the work relative to the base can be suppressed. As a result, it is possible to secure a work area before and after the work in a work having a long work length while suppressing a decrease in work efficiency in a work having a short work length.

(5) In the cart conveyance conveyor described in (4),
The connector has a contact portion that contacts a workpiece having a long workpiece length, and the contact portion is urged upward with respect to the slide table and supported so as to be movable up and down. A connecting arm portion supported horizontally to the base and locked to one end of the rotating member, wherein the workpiece receiving portion and the connecting arm portion have a long work length. It is formed so as to be engaged by its own weight.

  In the present invention, the coupler has a contact portion that comes into contact with a work having a long work length, and the contact portion is urged upward with respect to the slide table and supported so as to be movable up and down. And a connecting arm portion supported so as to be horizontally movable with respect to the base and locked to one end portion of the rotating member, and the workpiece receiving portion and the connecting arm portion are caused by the weight of the workpiece having a long workpiece length. Since it is formed to engage, when a work with a long work length is mounted on the slide table, the work receiving part and the connecting arm part automatically engage, and a process requiring a work area before and after the work Then, the table moving mechanism is operated, and a work area necessary for a work having a long work length can be secured. Further, when a workpiece having a long workpiece length is separated from the slide table, the engagement between the workpiece receiving portion and the connecting arm portion can be automatically released. Therefore, the engagement / disengagement between the workpiece receiving portion and the coupling arm portion in the coupling tool can be performed in conjunction with the operation of mounting a workpiece having a long workpiece length on the slide table. As a result, the work area before and after the work can be secured without requiring a special drive device in the transport carriage on which the work having a long work length is mounted.

  According to the present invention, a cart transport that transports a plurality of types of workpieces having different workpiece lengths in a column shape so that a plurality of workpieces are mounted so that the longitudinal direction thereof is along the transport direction, and transports in one direction along the track. In the conveyor, it is possible to provide a cart transport conveyor that can secure a work area before and after the workpiece by a simple mechanism while shortening the overall length of the conveyor.

It is a schematic perspective view of the trolley | bogie conveyance conveyor which concerns on embodiment of this invention. It is AA sectional drawing shown in FIG. It is a side view of the trolley | bogie conveyance conveyor shown in FIG. It is explanatory drawing (plan view) of operation | movement of the slide table in the conveyance trolley | bogie shown in FIG. 4A shows the backward end position (original position) of the slide table, FIG. 4B shows the middle of movement of the slide table, and FIG. 4C shows the forward end position of the slide table. . It is a modification of AA sectional drawing shown in FIG. It is BB sectional drawing shown in FIG. It is a schematic plan view of the conventional cart conveyance conveyor. FIG. 7A shows a case where a plurality of types of vehicles (workpieces) having different longitudinal lengths of the vehicles (workpieces) are mounted on the conveyance carriage in the carriage conveyance conveyor, and FIG. The case where the full length of a trolley | bogie conveyance conveyor is shortened by moving the front-back position of a vehicle (workpiece | work) is shown. It is a schematic side view of a conveyance trolley provided with a slide table that can move in parallel in the conveyance direction (front and rear) and a drive device that moves the slide table. It is a schematic plan view of the conveyance trolley shown in patent documents 1.

  Next, the cart conveyance conveyor which is embodiment which concerns on this invention is demonstrated in detail with reference to drawings. First, the whole structure of the cart conveyance conveyor of this embodiment is demonstrated, and the moving method of the slide table in a conveyance cart is demonstrated after that. Finally, a modified example of the transport carriage in this embodiment will be described.

<Overall configuration of cart conveyor>
First, the whole structure of the trolley | bogie conveyance conveyor which concerns on this embodiment is demonstrated using FIGS. 1-3. In FIG. 1, the schematic perspective view of the trolley | bogie conveyance conveyor which concerns on embodiment of this invention is shown. FIG. 2 is a cross-sectional view taken along line AA shown in FIG. In FIG. 3, the side view of the trolley | bogie conveyance conveyor shown in FIG. 1 is shown.

  As shown in FIGS. 1 to 3, the carriage transport conveyor 10 is disposed, for example, on an assembly line P of a vehicle (work) W and mounts the vehicle (work) W such that its longitudinal direction is along the transport direction. It is a cart conveyor that connects a plurality of carts 1 in a column and moves in one direction along the track 2. The carriage conveyor 10 includes a carriage 1 on which a vehicle (work) W is mounted, a track 2 that is laid on the floor 8 and guides the carriage 1 in the conveyance direction, and a track 2 below the central portion of the carriage 1. A guide rail 4 disposed along the track 2, an auxiliary rail 6 disposed along the track 2 below the side of the transport cart 1, and a drive device 5 that moves the transport cart 1 along the track 2. ing. The track 2 is formed in a straight line and is disposed at a position symmetrical with respect to the left and right center of the transport carriage 1. A work table 7 is disposed on the side of the transport carriage 1 at substantially the same height as the transport carriage 1.

  The carriage 1 is loaded with a base 11 that is pushed by the drive unit 5 and moved in the conveyance direction on the track 2, and a vehicle (work) W is mounted on the carriage 11 so as to be movable in the conveyance direction. And the table moving mechanism 3 that connects the base 11 and the slide table 12 to each other. The table moving mechanism 3 is engaged with a guide rail 4 disposed along the track 2.

  The base 11 is a cart with wheels 14 formed in a substantially rectangular shape, and work areas FS and BS corresponding to work before and after the vehicle (work) W are provided at the upper end thereof by the vehicle (work) W. It is formed so as to be shieldable from above. The work area FS on the front side of the vehicle (workpiece) W is used as an operator work area in a process of opening a hood panel and mounting components in an engine room, for example. In addition, the work area BS on the rear side of the vehicle (work) is used as an operator work area in a process of opening a back door and mounting components such as a rear seat, for example.

  A pair of left and right guide rails 15 for guiding the slide table 12 in the front-rear direction are formed at the upper end of the central portion of the base 11 at positions corresponding to the left and right ends of the slide table 12. An opening 17 is formed in the base 11 inside the pair of guide rails 15.

  The slide table 12 is a substantially rectangular table placed near the center of the base 11, and four receiving jigs 16 on which the vehicle (workpiece) W is placed are formed at the upper end thereof. ing. The longitudinal length of the slide table 12 is shorter than the longitudinal length of the vehicle (workpiece) W. The vehicle (work) W placed on the receiving jig 16 moves from above the work area BS on the rear side of the vehicle (work) formed on the base 11 at the retracted end position (original position) of the slide table 12. Shielded. Further, the vehicle (work) W shields the work area FS on the front side of the vehicle (work) formed on the base 11 from above at the forward end position of the slide table 12. In the case of a plurality of types of vehicles (work) W having different work lengths, at least the vehicle (work) W having the longest work length is the work area FS on the front side of the vehicle (work) or the work on the rear side of the vehicle (work). The area BS is shielded from above.

  The table moving mechanism 3 includes a rotating member 31 formed to be rotatable in a horizontal direction around a shaft portion 311 formed at the lower end of the base 11 of the transport carriage 1, and a shaft portion 311 of the rotating member 31. A connecting member 32 for connecting the one end 312 and the slide table 12 separated from each other, and a roller body 33 formed on the other end 313 that is engaged with the guide rail 4 and separated from the shaft 311 of the rotating member 31. I have. The rotating member 31 is formed in a substantially V shape in plan view, and a shaft portion 311 is formed at a crossing portion of the substantially V shape. The shaft portion 311 of the rotating member 31 is formed on the left and right center of the transport carriage 1. The coupling tool 32 includes a coupling plate 321 extending in the horizontal direction and a coupling shaft 322 standing in the vertical direction. One end of the connecting plate 321 is pin-connected to one end portion 312 of the rotating member 31 so as to be rotatable. The other end of the connecting plate 321 is fixed to the lower end of the connecting shaft 322. The upper end of the connecting shaft 322 is pivotably locked to a bearing portion 34 formed at the lower end of the center portion of the slide table 12.

  The guide rail 4 has a pair of parallel rail portions 41 and 43 formed in a straight line parallel to the track 2 in plan view, and is inclined between the parallel rail portions 41 and 43 in plan view with respect to the track 2. And an inclined rail portion 42 formed linearly. The parallel rail portions 41, 43 are either left or right with respect to the first parallel rail portion 41 whose axis passes through the left and right center of the transport carriage 1 and is formed in parallel with the track 2, and the axis of the parallel rail portion 41. It is comprised from the 2nd parallel rail part 43 provided with the axis line eccentrically parallel. The inclined rail portion 42 is inclined from the first parallel rail portion 41 toward the second parallel rail portion 43 and the inclined rail portion 42 is inclined toward the first parallel rail portion 41 from the second parallel rail portion 43. There is. The inclined rail portion 42 is formed corresponding to a process of working in the work areas FS and BS before and after the vehicle (work). If there are a plurality of such processes in the cart conveyor 10, a plurality of inclined rail portions 42 are formed correspondingly. The guide rail 4 (41, 42, 43) is formed in a substantially U-shaped cross section, and the roller body 33 formed in the other end 313 of the rotating member 31 rolls while being regulated in the cross section. It is formed as follows.

  The drive device 5 is a friction drive device that pushes the base 11 in the transport direction while making frictional contact with the left and right sides of the base 11. The auxiliary rail 6 is a rail member that engages with a pair of guide rollers 13 formed at the lower right end before and after the base 11 to prevent the conveyance carriage 1 from meandering.

<How to move the slide table>
Next, a method for moving the slide table 12 in the transport cart 1 will be described with reference to FIG. FIG. 4 is an explanatory diagram (plan view) of the operation of the slide table in the transport carriage shown in FIG. 4A shows the backward end position (original position) of the slide table, FIG. 4B shows the middle of movement of the slide table, and FIG. 4C shows the forward end position of the slide table. .

  As shown in FIG. 4A, the transport carriage 1 moves on the first parallel rail 41 in the transport direction. A vehicle (work) W mounted on the slide table 12 of the transport carriage 1 has a work area BS on the rear side of the vehicle (work) formed on the base 11 at the retracted end position (original position) of the slide table 12. Shield from above. At this time, since the work area FS on the vehicle (work) front side is not shielded by the vehicle (work) W, the work on the vehicle (work) front side can be performed.

  The roller body 33 formed on the rotating member 31 of the table moving mechanism 3 is engaged with the first parallel rail portion 41. Since the shaft portion 311 of the rotating member 31 is formed on the left and right center of the transport carriage 1, the axis passes through the left and right center of the transport cart 1 and is formed on the first parallel rail portion 41 formed parallel to the track. Is located. Therefore, the shaft portion 311 of the rotating member 31 and the roller body 33 are aligned in a straight line on the axis line of the first parallel rail portion 41. Therefore, the force for rotating in the horizontal direction does not act on the rotating member 31 of the table moving mechanism 3, and the slide table 12 is stationary at the retracted end position (original position).

  Next, as shown in FIG. 4B, when the transport carriage 1 further moves in the transport direction, the roller body 33 formed on the rotating member 31 of the table moving mechanism 3 moves from the first parallel rail 41 to the first. It is engaged with the inclined rail portion 42 inclined toward the two parallel rail portions 43. As a result, a force that rotates counterclockwise acts on the rotating member 31 of the table moving mechanism 3, and the slide table 12 is connected via the connector 32 that is locked to one end 312 of the rotating member 31. Are moved in the transport direction at a constant speed. Therefore, the slide table 12 moves in the direction in which the shielding of the work area BS on the rear side of the vehicle (work) by the mounted vehicle (work) W is released.

  Next, as illustrated in FIG. 4C, when the transport carriage 1 further moves in the transport direction, the roller body 33 formed on the rotating member 31 of the table moving mechanism 3 moves from the inclined rail portion 42 to the second rail. Engaged with the parallel rail portion 43. As a result, the force for rotating the rotating member 31 of the table moving mechanism 3 counterclockwise disappears, and the slide table 12 stops at the forward end position. Therefore, the shielding of the work area BS on the rear side of the vehicle (work) by the vehicle (work) W mounted on the slide table 12 is completely released, and the work on the rear side of the vehicle (work) can be performed. At this time, since the work area FS on the vehicle (work) front side is shielded by the vehicle (work) W, the work on the vehicle (work) front side cannot be performed.

  Although not shown, when the transport carriage 1 further moves in the transport direction, the roller body 33 formed on the rotating member 31 of the table moving mechanism 3 moves from the second parallel rail 43 to the first parallel rail portion 41. It is engaged with the inclined rail part 42 inclined toward the front. As a result, a clockwise rotating force is applied to the rotating member 31 of the table moving mechanism 3, and the slide table 12 is moved via the connector 32 locked to the one end 312 of the rotating member 31. It can be returned to the retracted end position (original position).

  As described above, by moving the slide table 12 on which the vehicle (work) W is mounted in the transport direction, the necessary work areas FS and BS can be secured. On the other hand, in the process of not working in the work areas FS and BS, the useless space of the transport carriage 1 can be reduced by moving the slide table 12 and shielding the work areas FS and BS that are not worked by the vehicle (workpiece). .

<Variation of transport cart>
Next, a modified example of the transport carriage in this embodiment will be described with reference to FIGS. FIG. 5 shows a modification of the AA sectional view shown in FIG. FIG. 6 is a cross-sectional view taken along the line BB shown in FIG.

  As shown in FIGS. 5 and 6, the carriage 11 </ b> B includes a base 11 </ b> B that is pushed by the driving device 5 and moves on the track 2 in the carrying direction, and a vehicle (workpiece) W <b> 3. The slide table 12B is formed so as to be movable in the transport direction above, and a table moving mechanism 3B that connects the base 11B and the slide table 12B. The table moving mechanism 3B is disposed along the track 2. About the point engaged with the guide rail 4, it is the same as the conveyance trolley 1 mentioned above.

  Here, a plurality of types of vehicles (work) W having different work lengths are mounted on the slide table 12B, and the connecting tool 32B of the table moving mechanism 3B mounts a vehicle (work) W3 having a long work length on the slide table 12B. It is different from the connection tool 32 of the transport carriage 1 described above that it is formed so as to engage with the slide table 12B only when it is done, and the structures of the base 11B and the slide table 12B related thereto are different. Therefore, the different coupling tool 32B, the base 11B, and the slide table 12B will be described in detail, and the other common members will be denoted by the same reference numerals and description thereof will be omitted.

  The coupling tool 32B of this modification has an abutting portion 3221B that abuts a vehicle (work) W3 having a long work length, and the abutting portion 3221B is urged upward with respect to the slide table 12B and moved up and down. A workpiece receiving portion 322B supported so as to be movable, and a connecting arm portion 321B supported so as to be horizontally movable with respect to the base 11B and locked to one end portion 312 of the rotating member 31, and the workpiece receiving portion 322B. The connecting arm portion 321B is formed so as to be engaged by the weight of the vehicle (work) W3 having a long work length.

  The work receiving portion 322B includes a contact portion 3221B, an upper connecting shaft 3222B, and an engaged portion 3223B. The abutting portion 3221B is formed, for example, so as to abut on the floor reinforcing portion W31 of the vehicle (workpiece) W3. An upper connection shaft 3222B that is suspended in the vertical direction is formed at the lower end of the contact portion 3221B. The upper connecting shaft 3222B is supported by a bearing portion 3225B fitted to the slide table 12B so as to be vertically movable. Between the contact portion 3221B and the slide table 12B, a spring member 3224B that urges the contact portion 3221B upward is mounted. Further, an engaged portion 3223B having a concave groove is formed at the lower end of the upper connecting shaft 3222B.

  The connecting arm portion 321B includes a connecting plate 3211B, a lower connecting shaft 3212B, and an engaging portion 3213B. The connecting plate 3211 </ b> B is a plate-like body extending in the horizontal direction, and one end is locked to one end portion 312 of the rotating member 31. A lower connection shaft 3212B standing in the vertical direction is formed at the other end of the connection plate 3211B. The lower connecting shaft 3212B is supported by a bearing portion 35B formed on the base 11B so as to be horizontally movable. A flange portion 351B is formed at the upper and lower ends of the bearing portion 35B. The flange portion 351B is formed to be slidable in the transport direction along the groove portion 111B formed in the base 11B. An engaging portion 3213B is formed at the upper end of the lower connecting shaft 3212B. The engaging portion 3213B has a convex portion that engages with the concave groove of the engaged portion 3223B. A bearing portion 34B that houses the engaging portion 3213B and the engaged portion 3223B in a detachable manner is fixed to the lower end of the slide table 12B. The bearing portion 34B is formed with a long hole 341B through which the lower connecting shaft 3212B can be horizontally moved.

  In the transport cart 1B of the modified example described above, when a vehicle (work) W3 having a long work length is mounted on the slide table 12B, the convex portion of the engaging portion 3213B and the engaged portion 3223B of the engaged portion 3223B are caused by the weight of the vehicle (work) W3. The recessed groove engages. When the table moving mechanism 3B is operated in a state where the convex portion of the engaging portion 3213B and the concave groove of the engaged portion 3223B are engaged, the slide table 12B moves in the transport direction via the coupling tool 32B.

  On the other hand, when the vehicle (work) W3 having a long workpiece length is separated from the slide table 12B, the engagement between the convex portion of the engaging portion 3213B and the concave groove of the engaged portion 3223B is released by the urging force of the spring member 3224B. The When the table moving mechanism 3B operates in a state where the engagement between the convex portion of the engaging portion 3213B and the concave groove of the engaged portion 3223B is released, only the connecting arm portion 321B moves in the transport direction, and the slide table 12B Keeps stationary.

  Accordingly, the coupling tool 32B of the table moving mechanism 3B engages with the slide table 12B only when the vehicle (work) W3 having a long work length is mounted on the slide table 12B. Therefore, the engagement / disengagement between the work receiving portion 322B and the connection arm portion 321B in the connection tool 32B can be performed in conjunction with the operation of mounting the vehicle (work) W3 having a long work length on the slide table 12B. Further, it is possible to secure the work areas FS and BS before and after the vehicle (work) in the vehicle (work) W3 having a long work length by translating the slide table 12B only in the vehicle (work) W3 having a long work length. it can.

<Effect>
As described above in detail, according to the cart transport conveyor 10 according to the present embodiment, the transport cart 1 is moved along the track 2 and the work area FS corresponding to the work before and after the vehicle (work) W, A base 11 on which the BS can be shielded from above by the vehicle (work) W; a slide table 12 on which the vehicle (work) W is mounted and can be translated in the transport direction on the base 11; Since a table moving mechanism 3 that connects the base 11 and the slide table 12 is provided, and the guide rail 4 that engages with the table moving mechanism 3 is disposed along the track 2, the guide rail 4 is disposed along the track 2. A work table FS corresponding to work before and after the vehicle (work) is mounted on the slide table 12 on which the vehicle (work) W is mounted in cooperation with the movement of the transport carriage 1 via the table moving mechanism 3 engaged with the guide rail 4. BS is with respect to the base 11 formed, it can be moved parallel to the transport direction. Therefore, it is possible to eliminate the need for a dedicated drive device or a drive circuit for moving the slide table 12 in the transport direction relative to the base 11.

  The table moving mechanism 3 moves the slide table 12 in a direction in which the work areas FS and BS are unshielded by the vehicle (work) W in the process of working in the work areas FS and BS. ) It is necessary to translate the slide table 12 on which the vehicle (workpiece) W is mounted in the transport direction while shortening the longitudinal length of the base 11 on which the work areas FS and BS corresponding to the front and rear work are formed. Work areas FS and BS can be secured. On the other hand, in the process of not working in the work areas FS and BS, the useless space of the transport carriage 1 can be reduced by moving the slide table 12 and shielding the work areas FS and BS not working by the vehicle (work) W. it can. Therefore, it is possible to secure the work areas FS and BS corresponding to the work before and after the vehicle (workpiece) with each transport carriage 1 while shortening the front and rear length of the transport carriage 1.

  Therefore, according to this embodiment, the carriage transporting a plurality of transport carts 1 in which a vehicle (workpiece) is mounted so that the longitudinal direction thereof is along the transport direction is connected in a column and moved in one direction along the track 2. In the conveyor 10, it is possible to provide a cart transport conveyor 10 that can secure the work areas FS and BS before and after the vehicle (workpiece) with a simple mechanism while shortening the overall length of the conveyor.

  In addition, according to the present embodiment, the guide rail 4 is disposed below the transport carriage 1, and the table moving mechanism 3 is centered on the shaft portion 311 formed at the lower end of the base 11 of the transport carriage 1. Engaging with the guide rail 4, the rotating member 31 formed so as to be rotatable in the horizontal direction, the connecting member 32 that connects the slide table 12 with the one end 312 separated from the shaft portion 311 of the rotating member 31. And the roller body 33 formed at the other end 313 spaced from the shaft portion 311 of the rotating member 31, the table moving mechanism 3 can be used as the base 11 and slide table 12 of each transport carriage 1 and the guide rail 4. Can be accommodated in a compact space below the carriage. Therefore, in the process where the work areas FS and BS are required, the work areas FS and BS corresponding to the work before and after the vehicle (work) can be secured by each transport carriage 1 without being obstructed by the table moving mechanism 3. . As a result, the work areas FS and BS before and after the vehicle (work) can be secured by the transport table 1 with the more compact table moving mechanism 3.

  Further, according to the present embodiment, the guide rail 4 includes a pair of parallel rail portions 41 and 43 formed in a straight line parallel to the track 2 in a plan view, and the parallel rail portions 41 and 43 between the pair of parallel rail portions 41 and 43. And an inclined rail portion 42 that is inclined and linearly formed in a plan view with respect to the track 2, so that the conveyance carriage 1 is conveyed while the roller body 33 is engaged with one of the parallel rail portions 41 and 43. When moving in the direction, the force for rotating in the horizontal direction does not act on the rotating member 31, and the slide table 12 can rest on the base 11. Further, when the transport carriage 1 moves in the transport direction with the roller body 33 engaged with the inclined rail portion 42, a force for rotating the rotating member 31 in the horizontal direction acts on the slide table 12. It is possible to translate the table 11 at a constant speed. Therefore, the necessary work areas FS and BS can be ensured only by forming the inclined rail part 42 between the parallel rail parts 41 and 43 corresponding to the process of working in the work areas FS and BS. In addition, the moving distance of the slide table 12 can be easily adjusted simply by changing the distance between the parallel rail portions 41 and 43 in the direction orthogonal to the conveying direction. As a result, the work areas FS and BS before and after the vehicle (workpiece) can be secured with the structure of the guide rail 4 even more easily in each transport carriage 1.

  Further, according to the present embodiment, a plurality of types of vehicles (workpieces) W having different work lengths are mounted on the slide table 12B, and the connecting tool 32B is configured to turn a vehicle (workpiece) W3 having a long work length into the slide table 12B. Since it is formed so as to engage with the slide table 12B only when it is mounted, the slide table 12B is translated in parallel only to the vehicle (work) W3 having a long work length, and the vehicle (work) having a long work length. Work areas FS and BS before and after the vehicle (work) in W3 can be secured. Therefore, useless movement of the slide table 12B when a vehicle (work) having a short work length is mounted on the slide table 12B can be avoided, and a reduction in work efficiency associated with movement of the vehicle (work) relative to the base 11B can be suppressed. As a result, it is possible to secure the work areas FS and BS before and after the vehicle (work) in the vehicle (work) W3 having a long work length while suppressing a decrease in work efficiency in the vehicle (work) having a short work length.

  Further, according to the present embodiment, the coupling tool 32B has the contact portion 3221B that comes into contact with the vehicle (work) W3 having a long work length, and the contact portion 3221B biases upward with respect to the slide table 12B. And a work receiving portion 322B supported so as to be movable up and down, and a connecting arm portion 321B supported so as to be horizontally movable with respect to the base 11B and locked to one end portion 312 of the rotating member 31. Since the receiving portion 322B and the connecting arm portion 321B are formed so as to be engaged by the own weight of the vehicle (work) W3 having a long work length, the vehicle (work) having a long work length is mounted on the slide table 12B. In addition, when the work receiving part 322B and the connecting arm part 321B automatically engage with each other and the work areas FS and BS before and after the vehicle (work) are necessary, the table moving mechanism 3B And dynamic, it can work length to ensure a working space FS, BS required long vehicle (work) W3. Further, when the vehicle (work) W3 having a long work length is separated from the slide table 12B, the engagement between the work receiving portion 322B and the connecting arm portion 321B can be automatically released. Therefore, the engagement / disengagement between the work receiving portion 322B and the connection arm portion 321B in the connection tool 32B can be performed in conjunction with the operation of mounting the vehicle (work) W3 having a long work length on the slide table 12B. As a result, the work areas FS and BS before and after the vehicle (work) can be secured without requiring a special drive device in the transport carriage 1B on which the vehicle (work) W3 having a long work length is mounted.

  The embodiment described above can be changed without changing the gist of the present invention. For example, in the present embodiment, the work areas FS and BS are formed before and after the vehicle (work) W on the base 11, but the work area may be formed only on the front side or the rear side of the vehicle (work) W.

  The present invention, for example, as a trolley transport conveyor used in a vehicle assembly line for assembling vehicle components to a vehicle mounted on a transport trolley, in particular, a trolley transport that mounts and transports a plurality of types of vehicles having different vehicle lengths on the transport trolley. Can be used as a conveyor.

DESCRIPTION OF SYMBOLS 1, 1B conveyance trolley 2 Track | truck 3, 3B table moving mechanism 4 Guide rail 10, 10B trolley | bogie conveyance conveyor 11, 11B Base 12, 12B Slide table 31 Rotating member 32, 32B Connecting tool 33 Roller body 41, 43 Parallel rail part 42 Inclined rail portion 311 Shaft portion 312 One end portion 313 The other end portion 321B Connection arm portion 322B Work receiving portion 3221B Abutting portion P Vehicle assembly line FS, BS Work area W, W3 Vehicle (workpiece)

Claims (5)

It is a carriage conveyor that connects a plurality of carriages mounted in a column so that the longitudinal direction of the workpiece is along the conveyance direction, and moves in one direction along the track,
The transport carriage moves along the track and a work area corresponding to the work before and after the work is formed so as to be shielded from above by the work, and the work is mounted on the work carriage. A slide table formed so as to be movable in parallel in a direction, and a table moving mechanism that connects the base and the slide table, and a guide rail that engages with the table moving mechanism is disposed along the track. about,
The said table moving mechanism moves the said slide table to the direction where the shielding of the said work area by the said workpiece | work is cancelled | released in the process of working in the said work area, The cart conveyance conveyor characterized by the above-mentioned. In the trolley | bogie conveyance conveyor described in Claim 1,
The guide rail is disposed below the transport carriage, and the table moving mechanism is configured to rotate in a horizontal direction around a shaft portion formed at a lower end of the base of the transport carriage. A moving member, a connecting member that connects the slide table to one end portion of the rotating member that is spaced from the shaft portion, and the other end portion that is engaged with the guide rail and spaced from the shaft portion of the rotating member. And a roller body formed on the carriage. In the trolley | bogie conveyance conveyor described in Claim 2,
The guide rail includes a pair of parallel rail portions formed in parallel to the track in plan view, and an inclined rail portion formed in an inclined shape in plan view with respect to the track between the parallel rail portions. A carriage conveying conveyor characterized by comprising: In the cart conveyance conveyor as described in Claim 2 or Claim 3,
A plurality of types of workpieces having different workpiece lengths are mounted on the slide table, and the connector is formed to engage with the slide table only when a workpiece having a long workpiece length is mounted on the slide table. Carriage transport conveyor characterized by the above. In the trolley | bogie conveyance conveyor described in Claim 4,
The connector has a contact portion that contacts a workpiece having a long workpiece length, and the contact portion is urged upward with respect to the slide table and supported so as to be movable up and down. A connecting arm portion supported horizontally to the base and locked to one end of the rotating member, wherein the workpiece receiving portion and the connecting arm portion have a long work length. It is formed so that it may engage by the dead weight of a workpiece | work, The trolley | bogie conveyance conveyor characterized by the above-mentioned.

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