MX2012006107A - Vehicle body conveying carriage in automobile assembly line. - Google Patents

Abstract

A vehicle body conveying carriage in an automobile assembly line, the carriage comprising: a door storage section (7A) provided below a conveying carriage (1) which conveys a vehicle body (B) in the automobile assembly line and storing a door (D) to be attached to the vehicle body (B), in a horizontal posture; and a door conveying means (8) to horizontally convey the door (D) from the door storage section (7A) to a rise-and-fall position at a lateral side portion of the1.0 conveying carriage (1) and to allow the door (D) to vertically rise at the rise-and-fall position; wherein the door conveying means (8) is supported below the conveying carriage (1) so as to be horizontally and laterally movable and comprises a door supporting body (18) switchable between a horizontal posture and a vertically rising posture and a cam follower roller (47a), and a cam rail (49) laterally moving the door conveying means (8) between the door storage section and the rise-and-fall position via the cam follower roller (47a) along with traveling of the conveying carriage (1) is laid on a traveling path side of the conveying carriage (1).

Description

BODY CARRIER CARRIER OF VEHICLE IN LINE OF AUTOMOTIVE ASSEMBLY DESCRIPTION OF THE INVENTION Technical field The present invention relates to a vehicle body carrier car configured so that a vehicle body and the doors to be assembled to the vehicle body can be transported integrally in an automotive assembly line by depositing the doors on a conveyor car which transports the vehicle body.

Previous technique In a typical conventional automotive assembly line, a transport means for only the door using for example a transport crane is separately disposed of the transport means for the vehicle body as described in patent document 1. The means Transport for only the door transports the doors that must be assembled to the vehicle body that is transported by means of transport for the vehicle body, and the doors that are removed from the means of transport for the door only are transferred to the means of transport for the vehicle body, and then the door assembly work, etc. is carried out.

Prior art document Patent document Patent Document 1: Japanese Unexamined Patent Application Publication No. H01-317881 THE INVENTION Problems that the invention must solve The means of transportation for the door only must be provided separately in the conventional automotive assembly line as above. As a result, not only the equipment costs are very high, but a floor area occupied by all the equipment also becomes large and it is not possible to increase the efficiency of use within a factory building. In addition, it is not possible to easily change a layout plan of the automotive assembly line. Therefore, it has been conceived to employ a vehicle body transport means using a conveyor carriage and to mount the doors on the vehicle body carriage itself to fully transport the vehicle body and the doors.

However, a specific configuration has not yet been revealed.

Means to solve problems The present invention proposes a novel vehicle body transport carriage configured to transport the vehicle body and the doors integrally by means of the vehicle body transport carriage as described in the foregoing. A vehicle body carrier car in an automotive assembly line in accordance with a first aspect of the present invention includes, described with reference symbols used in the description for an embodiment described below in order to facilitate the understanding of the relation to the embodiment, a door storage section (7A) that is provided under a conveyor carriage (1) that carries a vehicle body (B) in the automotive assembly line and stores in a horizontal position a door (D) to be fixed to the vehicle body (B), and a door transport means (8) for horizontally transporting the door (D) from the door storage section (7A) to a control position of height in a side portion of the carriage (1) conveyor and allow the door (D) to be raised vertically in the height control position, where the means (8) of t The door conveyor is supported under the transport carriage (1) so that it can move horizontally and laterally, and includes a door support body (18) that can be switched between a horizontal position and a vertical raised position and to a side of the transport path of the conveyor carriage (1) is fitted with a cam follower (47a), and a cam track (49) which laterally moves the door transport means (8) between the door storage section and the height control position by means of the impeller (47a) cam follower with the translation of the carriage (1) conveyor.

A vehicle body carrier car in an automotive assembly line in accordance with the second aspect of the present invention includes, described with reference symbols in parentheses used in the description of the embodiment described below in order to facilitate the relation to the embodiment, a door storage section (7A) that is provided under a conveyor carriage (1) that carries a vehicle body (B) in the automotive assembly line and stores a door in a horizontal position (D) to be fixed to the vehicle body (B), and a door transport means (8) for horizontally transporting the door (D) from the door storage section (7A) to a control position of height in a side portion of the carriage (1) conveyor and allow the door (D) to rise vertically in the height control position, wherein the medium (8) The door frame includes a lateral movement base (17) supported below the transport carriage (1) so that it can be moved horizontally and laterally between the door storage section (7A) and the height control position, a body ( 18) which is supported on a pivot in the base (17) of lateral movement so that it is capable of rising and falling in an oscillating manner between a horizontal position and a vertical elevated position, and on one side of the translation path a cam follower (47a) that is provided in the door support body (18), and a cam track (49) that causes the door support body (18) to be placed on the conveyor (1) conveyor (47) located in the height control position is raised together with the base (17) of lateral movement by means of the cam follower (47a) at par with the translation of the carriage (1) conveyor.

In addition, a vehicle body carrier car in an automotive assembly line in accordance with the third aspect of the present invention includes, described with reference symbols in parentheses used in the description of the embodiment described below for the purpose of to facilitate the relationship with the embodiment, a door storage section (7A) that is provided under a carriage (1) conveyor that carries a vehicle body (B) in the automotive assembly line and stores in a horizontal position a door (D) to be fixed to the vehicle body (B), and a door transport means (8) for horizontally transporting the door (D) from the door storage section (7A) to a position of height control in a side portion of the carriage (1) conveyor and allow the door (D) to rise vertically in the height control position, where the medium (8) The door transport system includes a lateral movement base (17) supported below the transport carriage (1) so that it can move horizontally and laterally between the door storage section (7A) and the height control position, and a door support body (18) which is pivotally supported on the lateral movement base (17) so that it is capable of rising and falling oscillating between a horizontal position and a vertical raised position, and the body (18) of door support is provided with a door support tool (19) and pivoted about a spindle (32) oriented vertically when the door support body (18) is in the upright vertical position, and a means ( 38) for locking the door support tool (19) to the door support body (18) in an orientation such that the door (D) that was supported by the door support tool (19) becomes parallel the door support body (18).

Effects of the invention First, the first aspect of the present invention will be described. According to the configuration of the first aspect, a door that should be fixed to the vehicle body can be stored in the door storage section of the carrier car that transports the vehicle body, and this door can be transported a door assembly work area integrally with the body of the vehicle by means of the vehicle body transport vehicle. The need to separately juxtapose a means of transport for the door just as in the conventional manner is eliminated. Accordingly, it is possible to solve several problems in conventional systems that require this means of transport for only the door, and the following effects can be expected in particular with the configuration of the first aspect.

That is, the door that has been supported by the door transport means: and deposited in the door storage section, it is necessary to move from the door storage section to the height control position on the side of the carriage. and also elevate to the vertical elevated position at the entrance of the door assembly work area, and then put it in a condition in which the previous work of fixing parts with respect to the door to be assembled to the vehicle body and the work of transferring to the vehicle body part the door whose parts were fixed, can be carried out with ease. In the configuration of the present aspect of the present invention the translation force of the transport carriage itself is used by means of the cam follower of the part of the door transport means provided on the transport carriage and the cam rail on the side of the conveyor carriage. the translation path of the conveyor carriage as a power source for the reciprocal horizontal movement of the door transport means between the door storage section and the height control position. Therefore, the need to mount an actuating means that requires a fluid power source or an electrical power such as a cylinder unit or a motor in the conveyor carriage is eliminated, so that it is possible to simplify the configuration of the conveyor carriage same. In addition, control of the preceding power source is unnecessary. Accordingly, the first aspect of the present invention can be effected economically.

When the first aspect of the present invention is carried out, it can be configured such that the door transport means (8) has a lateral movement base (17), which moves laterally between the storage section (7A) of door and height control position, and the door support body (18) is pivotally supported on the lateral movement base (17) so as to be able to rise and fall in an oscillating manner, and the carriage ( 1) conveyor is provided with guide rails (20a and 20b) supporting the door support body (18) and the base (17) of lateral movement in a horizontal position while the door support body (18) moves between the door storage section (7A) and the height control position integrally with the lateral movement base (17).

The door transport means can also be constituted by a body support unit. However, in accordance with the foregoing configuration, the door transport means is composed of the lateral movement base that can be moved laterally between the door storage section and the height control position and the door support body which is supported in pivot in the base of lateral movement so that it is capable of rising and falling in an oscillating manner. Even if a drive is used to cause the door support body to rise and fall in the height control position, the drive may be interposed between the lateral movement base and the door support body. At the same time, the door support body that was commuted to the vertical upright position can be supported securely by the base of lateral movement. Further, when the door support body moves laterally between the door storage section and the height control position, all the weight in the door support body part is not only received by the lateral movement base, and a part of the total weight can be received by the guide rails on the part of the conveyor carriage supporting the base of lateral movement in a horizontal position. Therefore, the door support body can be safely supported in the horizontal position and move horizontally while the lateral movement base is configured to be compact and lightweight. This configuration can be carried out specifically as follows.

The base (17) of lateral movement; it is composed of a pair of lateral movement units (17a and 17b) which are arranged spaced apart in a direction of translation of the carrier carriage and a connecting element (17c) connecting the two movement units (17a and 17b) to each other side. The door support body (18) is arranged between the pair of units (17a and 17b) of lateral movement and has both lateral portions supported in pivot in the pair of units (17a and 17b) of lateral movement by means of spindles (29a and 29b) mutually concentric horizontals, so that it is capable of rising and falling. The rails (20a and 20b) support for lateral movement both of the pair of lateral movement units (17a and 17b) and the two lateral portions of the door support body (18). When the door support body (18) reaches the height control position it is only possible to release the door support body (18) from the guide rails (20a and 20b) so that it becomes capable of rising and descending oscillating with respect to the pair of units (17a and 17b) of lateral movement.

Furthermore, it can be configured so that the cam follower (47a) is provided as a pair, and the cam followers (47a and 47b) are supported in pivot spaced apart from one another in a translation direction of the conveyor carriage, and so that the cam track (49) acts on the cam follower (47a) on the side of the translation direction of the conveyor carriage when the door transport means (8) moves laterally forward from the section (7A) of door storage to the height control position, but acts on the cam follower (47b) on the opposite side of the translation direction of the conveyor carriage when the door transport means (8) is retracted and moves laterally from the height control position to the door storage section (7A). That is, the first aspect of the present invention can be carried out by providing the door transport means with a cam follower, but in accordance with the preceding configuration, the interference between the cam track and the supported door is easily avoided. by means of transporting doors moving horizontally, whether the door transport means moves laterally forward from the door storage section to the height control position or if the door transport means retracts and moves laterally from the height control position to the door storage section. Restrictions are reduced with respect to the position (height) of the cam follower with respect to the door transport means to avoid interference. As a result, the implementation of the first aspect of the present invention is facilitated.

It is noted that the door transport means in the first aspect of the present invention allows the raising and lowering of its support door between the horizontal position and the vertical elevated position to be carried out in the height control position by means of the operation manual of the workers or by a means of operation of height control which is actuated by means of a driving means, such as a cylinder or motor unit. However, the cam follower (47a) can be provided in the door support body (18) of the door transport means (8), and the cam track (49) can include regions (49B and 49F) laterally moving the base (17) of lateral movement between the door storage section (7A) and the height control position, and regions (49C and 49E) that cause the door support body (18) located in the height control position is raised and lowered together with the base (17) of lateral movement by means of the cam follower (47a) in combination with the translation of the conveyor carriage (1). In accordance with this configuration it is possible to achieve that the door supported by the door transport means is raised and lowered automatically: by using the cam track and the cam follower to reciprocally move the door transport means between the section of door storage and the height control position as the drive source described above, like a cylinder unit or a motor, it is not necessary to mount on the conveyor carriage, and this without contemplating the manual operation of the locks.

Subsequently, the second aspect of the present invention will be described. In accordance with the configuration of the second aspect, a door that is to be fixed to the vehicle body can be stored in a door storage section of the transport carriage carrying the vehicle body, and this door can be transported to an area of door assembly work integrally with the vehicle body by means of the vehicle body carrier car. The need to separately juxtapose a means of transporting only doors as in the conventional manner is eliminated. Accordingly, it is possible to solve several problems existing in conventional systems that require this means of transport for doors only, and the following effects can be expected in particular with the configuration of the second aspect of the present invention.

That is, the door that has been supported by the door transport means and stored in the door storage section needs to be moved from the door storage section to the height control position on the side of the carriage, and also elevate to the vertical elevated position at the entrance of the door assembly work area, and then be placed in a condition in which the work of fixing parts with respect to the door prior to assembly with ease can be easily performed. the body of the vehicle, and the work of transferring to the side of the vehicle body the door whose parts were fixed. In the configuration of the second aspect of the present invention the translation force of the transport carriage itself is used by means of the cam follower of the door transport means provided in the transport carriage and the cam track in the part of the line of transport. translation of the conveyor carriage as a power source to cause the door support body of the door transport means to rise and fall on the side of the carriage in the height control position. Therefore, the need to mount a drive means requiring a source of fluid pressure or electrical power such as a cylinder unit or motor is mounted on the conveyor carriage itself, so that the configuration of the motor can be simplified. transporter truck. In addition, control of the preceding power source is unnecessary. Accordingly, the second aspect of the present invention can be carried out economically.

When carrying out the second aspect of the present invention, the transport carriage (1) can be equipped with guide rails (20a and 20b) that support the door support body (18) and the base (17) of movement lateral in a horizontal position while the door support body (18) moves between the door storage section (7A) and the height control position integrally with the lateral movement base (17). That is, the door transport means requires a laterally moving base for reciprocal movement between the door storage section and the height control position and a door support body that is pivotally supported on this movement base. lateral to be able to rise and descend. However, in accordance with the above configuration the total weight in the door support body is not only received by the base of lateral movement, and a part of the total weight can be received by the guide rails in the part of the carriage conveyor supporting the base of lateral movement in the horizontal position when the door support body moves laterally between the door storage section and the height control position. Therefore, the door support body can be supported in the horizontal position in a secure manner, and moved horizontally while the base of lateral movement is configured to be compact and lightweight. If this configuration is carried out, the lateral movement base (17) may be composed of a pair of lateral movement units (17a and 17b) arranged spaced apart in a translational direction of the carrier carriage and of a connecting element (17c) connecting one to the other both units (17a and 17b) of lateral movement, and the door support body (18) can be arranged between the pair of units (17a and 17b) of lateral movement and have both lateral portions supported in pivot in the pair of units ( 17a and 17b) of lateral movement by mutually concentric horizontal spindles (29a and 29b) so that it can be capable of rising and falling. The guide rails (20a and 20b) can support laterally mobile both of the pair of lateral movement units (17a and 17b) and the two lateral portions of the door support body (18), and only the body ( 18) can be released from the guide rails (20a and 20b) and becomes capable of rising and falling in an oscillating manner with respect to the pair of units (17a and 17b) of lateral movement when the. door support body (18) reaches the height control position.

In addition, if the second aspect of the invention is carried out, it can be configured so that the cam follower (47a) is provided as a pair, and the cam followers (47a and 47b) are supported in spaced pivots. in a direction of translation of the conveyor carriage, and in such a way that the cam track (49) acts on the cam follower (47a) on the side of the translation direction of the conveyor carriage when the support body (18) of the door is raised by oscillating from the horizontal position to the vertical raised position, but acts on the cam follower (47b) on the opposite side of the translation direction of the conveyor carriage when the door support body (18) is made descend from the vertical upright position to the horizontal position. That is, the present aspect can be carried out by providing a cam follower in the door support body, but according to the preceding configuration, interference between the cam track and the door supported by the means is easily avoided. of horizontal movement door transport, either when the door support body is raised in the height control position or when the door support body is lowered in the height control position. Restrictions are reduced with respect to the position (height) of the cam follower with respect to the door support body to avoid interference. As a result, the implementation of the second aspect of the present invention is facilitated.

In addition, the cam track (49) can be configured, in the second aspect of the present invention, to include regions (49B and 49F) that move laterally the base (17) of lateral movement between the storage section (7A) of door and height control position by means of the door support body (18), and regions (49C and 49E) that cause the door support body (18) located in the height control position to rise and descend together with the base (17) of lateral movement by means of the impeller (47a) cam follower with the translation of the carriage (1) conveyor. That is, the door transport means in the second aspect of the present invention allows reciprocal lateral movement between a position within the door storage section and the height control position of the lateral movement base supporting the body of pivoting door support so that the lifting and lowering can be effected by the manual operation of operators or a means of driving the lateral movement base, which is actuated by a driving source, such as a cylinder unit or an engine. However, according to the preceding configuration, the lateral movement base of the door transport means can be moved reciprocally and laterally automatically between a position within the door storage section and the height control position by means of the use of the cam track and cam follower to cause the door support body in the height control position to raise and lower as the drive source described above, such as a cylinder unit or an engine no need to mount on the transporter, this without considering the manual operation of the operators.

In addition, the third aspect of the present invention will be described. In accordance with the configuration of the third aspect of the present invention, a door which is to be fixed to the vehicle body can be stored in a door storage section of the transport carriage carrying the vehicle body, and this door can be transported to a work area of door assembly integrally with the vehicle body by means of the vehicle body transport trolley. The need to separately juxtapose a means of transporting only doors as in the conventional manner is eliminated. Accordingly, it is possible to solve various problems existing in conventional systems requiring this means of transport for doors only, and the following effects can be expected in particular with the configuration of the second aspect of the present invention.

That is, the door that has been supported by the door transport means and deposited in the door storage section can be raised vertically in the portion of the side portion of the carriage of the vehicle body by lateral movement of the door. base of lateral movement and the lifting action of the door support body supported in pivot in the base of lateral movement so as to be able to rise and descend. According to the configuration of the present aspect, the door that was raised vertically in the side portion of the vehicle body carriage can rotate about the vertical axis when unlocking the locking means and switching from one position to the moment of being locked. by means of the interlocking means, for example a secure position in the. which the external surface of the door is oriented towards the vehicle body transport carriage, to a position reversed by 180 degrees in which the inner surface of the door is oriented towards the vehicle body carrier car, or to be switched from the position reversed to the safe position by a rotation by 180 degrees if the position of the door at the moment of being locked by the interlocking means is the inverted position.

Accordingly, when an operator standing outside of the travel path of the vehicle body carrier carriage performs the operation of fixing parts with respect to the inner surface of the door prior to assembly to the vehicle body, the Raised door is brought to the safe position suitable for the preceding work. On the other hand, when it is more convenient for the operation that the inner surface of the door is oriented towards the vehicle body transport carriage, such as the occasion when an operator who is standing outside the transport path of the transport car of the vehicle. The vehicle body carries out the operation with respect to the external surface of the door prior to assembly to the vehicle body, or the occasion when an operator standing on the vehicle body carrier car carries out the assembly work of the vehicle body. parts with respect to the inner surface of the door or carries out the work of assembling the door to the vehicle body, the raised door is switched to a position inverted by 180 degrees with respect to the safe position, and the respective work is It can be carried out easily and efficiently. As a matter of course, the door support tool is locked to the door support body by interlocking means, and the door is fixed either in the secure position or the inverted position while the door is stored in the door section. door storage under the vehicle body transport carriage. Therefore the door can be transported safely.

If the third aspect described above of the present invention is carried out, the locking means (38) can be configured to lock the door support tool (19) to the door support body (18), in both of a position in which the outer surface of the door (D) which is supported by the door support tool (19) is oriented towards the vehicle body carrier carriage (1) and an inverted position in which an inner surface of the door (D) which is supported by the door support tool (19) is oriented towards the carriage (1) vehicle body conveyor when the door support body (18) is in the upright position vertically. According to this configuration, the door in the vertical raised position in the side portion of the vehicle body carriage can be locked in both the safe position and the inverted position by 180 degrees. Therefore, work with respect to the doors in any of the safe position and the inverted position by 180 degrees can be carried out easily and safely compared to the time when the door is not locked in any of the positions and is released.

In addition, the door support tool (19) supports the door (D) oriented so that a bottom thereof is down when the door support body (18) is in the vertical raised position in the control position Tall. The door support tool (19) can be formed with a U-shape that surrounds three sides of the bottom and both the front and rear door (D), and the door support tool (19) U can have sides respectively fixed with accessories (35 to 37) for securing the door. The door support body (18) can be formed with a U-shape surrounding the U-shaped door support tool (19) in the same orientation as the door support tool (19) when in the vertical elevated position in the height control position. The base of the door support tool (19) can be supported rotationally and pivotably in a base of the U-shaped door support body (18) by the spindle (32). The locking means (38) can be arranged between a side part of the door support body (18) and a side part of the door support tool (19). In accordance with this configuration, the third aspect of the present invention can be carried out with the simple configuration and inexpensively. In addition, the interlocking means of the door support tool with respect to the door support body can also be provided in a position very laterally remote from the axis of rotation of the door support tool. Therefore, the interlocking means can also be made with a simple configuration.

In addition, the locking means (38) can be composed of elements (41a and 41b) that control an angle of rotation of the door support tool (19) with respect to the door support body (18) and a tang ( 39) that is inserted and removed inserted through the door support body (18) and the door support tool (19) that was placed with respect to the door support body (18) by the elements ( 41a and 41b) of rotation angle control. In accordance with this configuration, the locking means can be carried out simply and economically.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 is a schematic plan view showing a work area of door assembly in an automotive assembly line; Figure 2 is a partially sectioned front elevation view of a conveyor car used in the automotive assembly line; Figure 3 is a partially sectioned plan view of the conveyor carriage; Figure 4 is a side elevational view of the conveyor carriage; Figure 5 is a side elevational view of one of the door transport means provided on the conveyor carriage; Figure 6 is a plan view of the door transport means; Figure 7A is a front elevational view of the door transport means and Figure 7B is a front elevational view showing a support figure of a door support tool with respect to a door support body of the conveying means of door; Figure 8 is a schematic plan view showing the door transport means of the carriage just prior to approaching a work area of door assembly; Fig. 9 is a schematic plan view showing the door transport means of the conveyor carriage during the approach to the work area of door assembly; Figure 10 is a schematic plan view showing the door transport means of the carriage just after the approach to the work area of door assembly; Figure 11 is a front elevation view showing the door transport means upon reaching a height control position of the door storage section; Figure 12 is a front elevation view showing the door transport means during the lifting action in the height control position; Figure 13 is a front elevation view showing the door transport means that completed the lifting action in the height control position; Figure 14 is a plan view of the door transport means shown in Figure 13; Figure 15 is a front elevation view showing a state in which the door support tool of the door transport means shown in Figure 13 is rotated by 180 degrees about a vertical axis; Figure 16 is a plan view of the door transport means shown in Figure 15; Figure 17A is a plan view showing an unlocked state of the interlocking means with respect to the door support tool shown in Figure 14, and Figure 17B is a plan view showing an unlocked state of the locking means with with respect to the door support tool shown in Figure 16; Figure 18A is a front elevational view of the locking means shown in Figure 17A, and Figure 18B is a rear elevational view of the locking means shown in Figure 17B; Y Figure 19A is a front elevational view showing an active interlocking state of the locking means shown in Figure 17A, and Figure 19B is a rear elevation view showing an active locking state of the locking means shown in the figure. 17B.

Mode of carrying out the invention Next, a preferred embodiment will be described, including the technical ideas of all first to third aspects of the present invention. In figures 1 to 4, the reference symbol 1 denotes a vehicle body carrier car which is supported on guide rails 2a and 2b placed along an automotive assembly line by means of two pairs of wheels 3a a 3d left and right front and rear. As shown in Figure 1, the vehicle body transport trolleys 1 move forward on the automotive assembly line at a constant speed while the respective upper surfaces of the trolley of the vehicle body transport trolleys 1 are contiguous one to another in a direction of translation of the car. The translation of each vehicle body carrier car 1 in the automotive assembly line is achieved by a variety of known vehicle translation drive means, for example, a friction drive means using friction drive wheels and rollers of backrest in pressurized contact with friction-driven surfaces Ib and Ib formed in both lateral parts parallel to the carriage translation direction of the vehicle body carrier carriage 1. The wheels 3a and 3b that roll on one of the guide rails 2a between the four wheels 3a to 3d are juxtaposed with vertical positioning rollers 4 which sandwich the guide rail 2a from both side parts.

Each vehicle body carrier cart 1 includes a vehicle body support base 5 installed to move vertically in a central portion of the upper surface of the car, a lifting action means 6 for the vehicle body support base 5 , door storage sections 7A to 7D provided below four carriage corners, and door transport means 8 juxtaposed to the respective door storage sections 7A to 7D. The vehicle body support base 5 and the lifting action means 6 for this can have any configuration. The vehicle body support base 5 in the embodiment shown is configured so that a pair of left and right support base units 5a and 5b are respectively supported by pantograph hinges 9a and 9b so that they can be moved in parallel and vertically. The lifting action means 6 consists of units 10a and 10b of upward thrust chain and downward traction that support the respective support base units 5a and 5b, drive units 11a and 11b driving the chain units 10a and 10b, and a motor 12 equipped with a speed reducer that synchronously drives the respective drive units 11b and 11b. The ascending drive chain and descending drive units 10a and 10b are composed of two chains 13a and 13b adjacent to each other to maintain a vertical elevated position in a vertical upright supporting the respective support base unit 5a or 5b, as it is conventionally known.

A vehicle body B supported by the pair of units 5a and 5b of left and right support base of the vehicle body support base 5 ascends and descends while maintaining a horizontal position by the reversible actions of raising and lowering the units 10a and 10b of up thrust chain and downward traction of the lifting action means 6. On the upper surface of the vehicle body carrier carriage 1, the working areas 14a and 14b on which the operators climb are secured at least on both side parts of the vehicle body B in the plant as shown in FIG. Figure 3. In the work areas 14a and 14b, guide rails 16a and 16b supporting the storage carts 15A and 15B of parts are placed so that they can move parallel to the carriage translation direction. The above-described door storage sections 7A to 7D are provided below > both both the front and rear ends of the guide rails 16a and 16b.

A configuration of the door transport means 8 juxtaposed to each of the door storage sections 7A to 7D will be described based on figures 5 to 7. The door transport means 8 is composed of a base 17 of lateral movement which can be moved laterally in a laterally horizontal direction perpendicular to the carriage translation direction, a door support body 18 supported on the lateral movement base 17, and a door support tool 19 supported on the support body 18 of door. A pair of guide rails 20a and 20b supporting the lateral movement base 17 are disposed in each of the door storage sections 7A to 7D. The lateral movement base 17 is composed of lateral movement units 17a and 17b, respectively supported by each of the guide rails 20a and 20b and a connecting element 17c connecting to each other both of the movement units 17a and 17b side. Each of the lateral movement units 17a and 17b are supported for reciprocal movement in a longitudinal direction of the guide rails 20a and 20b while maintaining a position parallel to the rails 20a and 20b, by means of rollers 21 of horizontal axis that respectively sandwich the guide rails 20 and 20b both above and below and vertical axis rollers 22 adjacent to the respective inner surfaces of the guide rails 20a and 20b.

The door support body 18 is composed of a pair of left and right side elements 23 a and 23 b which are arranged in parallel within the respective lateral movement units 17 a and 17 b, a connection element 24 connecting and integrating with each other both side elements 23a and 23b, and a pair of left and right extension elements 25a and 25b that are provided continuously from both lateral elements 23a and 23b and placed in parallel with the guide rails 20a and 20b in an upstream position of the respective ones units 17a and 17b of lateral movement. By means of the horizontal axis rollers 26 pivotally supported in this pair of left and right extension elements 25a and 25b so as to sandwich the guide rails 20a and 20b both from above and from below, the door support body 18 is supported for reciprocal movement in the longitudinal direction of the guide rails 20a and 20b while maintaining the position parallel to the guide rails 20a and 20b. Both side elements 23a and 23b of the door support body 18 have a rear end portion provided continuously with a supporting element 27a or 27b extending above the adjacent lateral movement unit 17a or 17b. The support elements 27a and 27b and the support elements 28a and 28b provided continuously from the respective lateral movement units 17a and 17b so as to be superimposed on the support elements 27a and 27b are connected by mutually concentric horizontal spindles 29a and 29b. and orthogonal to the direction of lateral movement of the base 17 of lateral movement. Therefore, the door support body 18 is configured to oscillate vertically around the horizontal spindles 29a and 29b.

As configured in the foregoing, the door support body 18 has a U-shaped structure in which the connecting element 24 serves as the base. The door support tool 19 has a U-shaped structure having the same orientation as the body 18 of U-shaped door support, and consists of a pair of side elements 30a and 30b of left and right frames placed inside the extension elements 25a and 25b of the door support body 18, and an element 31 of connection arranged inside the connecting element 24 of the door support body 18 that connects and integrates the inner end portions of both side frame elements 30a and 30b with one another. The connection element 24 which is the base of the door support body 18 and the connection element 31 which is the base of the door support tool 19 are connected by a spindle 32 parallel to the direction of lateral movement of the base 17 of lateral movement (guide rails 20a and 20b). Therefore, the door support tool 19 is configured to rotate about the spindle 32 with respect to the door support body 18. The spindle 32 is arranged below the connection element 24. Therefore, the door support tool 19 can be switched between a fixed position at approximately the same level as the door support body 18 and an inverted position at a level one degree lower than the door support body 18 by the rotation by 180 degrees in the normal and inverse directions around the spindle 32.

The door support tool 19 is fixed with accessories for securing the door D which was arranged in parallel with the door support tool 19 at the axial central level of the spindle 32 within an area surrounded by the lateral elements 30 a and 30 b of the door. frame and the connecting element 31 of the door support tool 19. More specifically, both side frame elements 30a and 30b which are both side parts of the door support tool 19 are fixed with door fastening accessories 35 and 36 for securing both front and rear door parts D using hinges, mechanisms of door interlock, or the like. The connection element 31 which is the base of the door support tool 19 is fixed with door fastening accessories 37 to which the base of the door D is adjusted. A distance between the side frame element 30 a which holds the door front part of the door D and the spindle 32 is longer than a distance between the side frame member 30b holding the rear part of the door D and the spindle 32. A path of rotation of the side frame member 30a holding the front part of the door D at the moment when the door support tool 19 rotates around the spindle 32 arrives near the inner part of the two lateral elements 23a and 23b of the door support body 18 while a path of rotation of the other side frame member 30b is sufficiently separated inside both lateral elements 23a and 23b of the door support body 18.

An interlocking means 38 for locking the door support tool 19 in a firm position to almost the same level as the door support body 18 and the inverted position at the level of a lower degree than the support body 18 The door is provided between the door support body 18 and the door support tool 19. As shown in Figs. 17 to 19, the locking means 38 is comprised of an operable interlocking pin 39 that is provided in a base portion of the side frame member 30a that holds the front of the tool door D 19 door support, locking elements 40a and 40b, and bearing plates 41a and 41b for restrictions of rotation in the door support tool 19, wherein the locking elements 40a and 40b and the supporting plates 41a and 41b are respectively provided in both lateral elements 23a and 23b of the door support body. The two side frame elements 30a and 30b of the door support tool 19 each consist of a shorter element 42 to which the connecting element 31 is connected and a longer element 43 which is integrated by overlapping an end portion. proximal thereof on a distal end portion of the shortest element 42. The operable interlocking pin 39 is inserted through a pin guide 44 which is fixed to the outside of the shorter element 42 of the frame side member 30a along a longitudinal direction of the frame side member 30a. A locking pin retaining guide 45 is juxtaposed which retains the locking pin 39 in a latched insertion position and a loose extracted position with respect to the locking elements 40a and 40b by the use of a perpendicularly provided lever pin 39a. and laterally at an external end portion of the locking pin 39.

The rotation restriction support plate 41a and the locking element 40a receiving the door support tool 19 which adopted the fixed position are fixed directly to the distal end portion of the side element 23a of the door support body 18. However, the rotation restriction support plate 41b and the locking element 40b receiving the door support tool 19 which adopted the inverted position are fixed to a distal end portion of a support column element 46 that is provided. protruding at the distal end portion of the side element 23b of the door support body 18, by virtue of which the frame side member 30a (the shorter element 42) supporting the locking pin 39 in the part of the tool 19 of The door support is largely separated from the distal end portion of the side element 23b of the door support body 18.

In the door transport means 8 configured as in the foregoing, a pair of cam followers 47a and 47b are fixed to the door support body 18. That is, the supporting column bodies 48a and 48b are provided protruding vertically downwards between the joints between the two lateral elements 23a and 23b of the door support body 18 and both ends: of the connecting element 24. The pair of bodies 48a and 48b of support column have lower ends in which the respective pivot followers 47a and 47b are supported by vertical uses to thereby be placed at the same level and in series in the direction of translation. of the car. On the other hand, beside the travel path of the vehicle body carriers 1, a cam track 49 is arranged bilaterally in a symmetrical manner to operate the cam followers 47a and 47b of the storage sections 7A and 7B. front and rear door of the same side side of the carriage 1 vehicle body conveyor and a cam track 50 for operating the cam followers 47a and 47b cam followers of the front and rear door storage sections 7C and 7D on the opposite side, as shown in figure 1.

The carriages 1 of the vehicle body conveyors configured as described above are moved forward on an automotive assembly line while the upper carriage surfaces thereof are contiguous to each other in the carriage translation direction as shown in FIG. Figure 1. The doors D are deposited and held respectively in the four door storage sections 7A to 7D of each car 1 vehicle body conveyor by means of the door transport means 8. The respective door transport means 8 of the door storage sections 7A to 7D are subjected to control actions on lateral positions and positions to the translation path by the cam rails 49 and 50 by means of the respective impellers 47a and 47b cam followers, on par with the forward translation of the vehicle body transporter carriage 1 on the automotive assembly line that includes the door assembly work area shown in figure 1. The door transport means 8 of the left and right door storage sections 7A and 7C and the door transport means 8 of the door storage sections 7B and 7D are bilaterally controlled symmetrically by the bilaterally symmetrical cam rails 49 and 50. The door transport means 8 of those of the front and rear door storage sections 7A and 7B and the door transport means 8 of the door storage sections 7C and 7D are controlled in the same direction with a delay of time by the same cam rails 49 or 50, respectively. Accordingly, in the following description, the door transport means 8 of the left front door storage section 7A and a cam track 49 on the side controlling this door transport means 8 as described above will be taken and described as an example. shows in figures 5 to 16.

The door transport means 8 of the section 7A of door storage is located in a retracting limit position (an internal position from the side of the vehicle body carrier carriage 1) in the lateral movement path along the guide rails 20a and 20b as shown in FIG. shows in Figures 2 to 8 when the vehicle body carrier carriage 1 moves forward towards the door assembly work area shown in Figure 1. At that time, the base 17 of lateral movement of the transport means 8 The door is supported horizontally on the guide rails 20a and 20b by means of the horizontal axis rollers 21 and the vertical axis rollers 22, and the door support body 18 which was supported to oscillate vertically in this lateral movement base 17 by means of the horizontal spindles 29a and 29b they have their pair of left and right extension elements 25a and 25b supported on the guide rails 20a and 20b by means of the rolls 26 of and horizontal. Therefore the door support body 18 is stable in the horizontal position similar to the base 17 of lateral movement. The door support tool 19 having been supported on the rotary door support body 18 around the spindle 32 is in a stable position at a level that is higher than the axial central level of the spindle 32 and overlaps the body 18 of the door support, and is attached to the door support body 18 by the locking means 38. The door D is held horizontally within the door support tool 19 in the horizontal state by means of respective door fastening fittings 35 to 37 in an orientation that the base of the door D is adjacent to the base of the tool 19 of door support and the inner surface (the side facing inward of the vehicle body) of the door D is located downwards.

While the door support tool 19 is in the fixed position described above, the side frame member 30a (the shortest element 42) of the door support tool 19 is in contact with the plate 41a of the door support tool 19a. rotation restriction support which was fixed to the lateral element 23a of the door support body 18, and the locking pin 39 is switched in the inserted locking position in which its distal end fits into a spike hole of the element 40a of locking, and the door support tool 19 is locked in the fixed position with respect to the door support body 18, as shown in the respective Figures A of Figures 17 to 19.

An adjacent internal linear region 49A outside the two runners 47a and 47b cam followers in series in the direction of translation of the door transport means 8 and preventing accidental lateral advancement of the door transport means 8 is provided in the cam track 49 on the side of the carriage travel path in order to retain the door transport means 8 in the retraction limit position described above when the vehicle body carrier carriage 1 moves forward towards the area of door assembly work as shown in Figure 1. In Figure 6 and Figure 7, the internal linear region 49A of the cam rail 49 is comprised of a pair of parallel rail elements 51a and 51b that surround the runners 47a and 47b cam followers from both sides. If a stop for receiving the base 17 for lateral movement of the door transport means 8 in the retraction limit position is juxtaposed with the side of the guide rails 20a and 20b, it is possible to omit the inner rail element 51b.

By the foregoing action, the door transport means 8 is retained in the retraction limit position by the internal linear region 49A of the cam rail 49 and the door D which was supported by this door transport means 8 is transported together with the vehicle body B by means of the carriage 1 vehicle body conveyor while maintaining the fixed horizontal position in which the internal surface of the door D is oriented downwards, while the vehicle body carrier car 1 moves forward towards the door assembly work area shown in Figure 1. When the vehicle body carrier car 1 enters the door assembly work area shown in figure 1, the cam follower 47a on the side of the translation direction of the carriage of the pair of impellers 47a and 47b front and rear cam followers is pushed horizontally outwards by a horizontal region 49B inclined to the outside of the rail 49 of cam, as shown in figure 1 and figure 9. As a result, all the door transport means 8 which supported the door D is pushed parallel outwards from the retraction limit position, along the the guide rails 20a and 20b.

As a result of the door transport means 8 being pushed horizontally outward by the horizontal region 49B inclined to the outside of the cam rail 49, the door transport means 8 reaches a forward limit position in which its base 17 of lateral movement reaches the outer ends of the guide rails 20a and 20b, as shown in Figure 11. The extension elements 25a and 25b of the door support body 18 protruding more than the base 17 of lateral movement on the forward direction side of the lateral movement base 17 are already separated from the forward ends of the guide rails 20a and 20b. The door support body 18 attempts to rotate downwards by gravity around the horizontal spindles 29a and 29b with respect to the base 17 of lateral movement. This movement can be configured to be received by the horizontal region 49B inclined to the outside of the cam track 49 by means of the cam follower 47a. However, as shown in Figure 6 and Figure 7, it is preferable to configure it so that the contact elements 52a and 52b abut against the distal ends of the lateral movement units 17a and 17b of the lateral movement base 17 bulges are provided below the rear end portions of the extension elements 25a and 25b of the door support body 18, so that the door support body 18 can oscillate vertically with respect to the base 17 of lateral movement only in a region higher than that of the horizontal position.

As shown in Figure 11, the cam follower 47a already reaches the terminal end of the horizontal region 49B inclined to the outside of the cam track 49 when the door transport means 8 reaches the forward limit position. The cam track 49 that follows from the terminal end of the horizontal region 49B inclined to the outside is formed with an upwardly curved gradient region 49c that only pushes the door support body 18 upwards by means of the cam follower 47a without cam. laterally pushing the base 17 of lateral movement at par with the translation of the vehicle body carrier carriage 1 (see figures 9, 10, 12 and 13). Therefore, only the door support body 18 rotates around the horizontal spindles 29a and 29b with respect to the lateral movement base 17 by means of the curved gradient region 49C upwardly of the cam track 49 and the impeller 47a cam follower on par with the forward translation of the vehicle body carrier carriage 1 after the door transport means 8 reaches the position of the advance limit. The door support body 18 is already switched to a vertical raised position as shown in FIG. 13 when the cam follower wheel 47a reaches the terminal end of the curved gradient region 49C upwardly of the cam track 49. At that time, the base 17 of lateral movement in the forward limit position is located under the vehicle body carrier carriage 1, and the horizontal spindles 29a and 29b connecting the lateral movement base 17 and the support body 18 of door are located in positions more to the interior than the side part of the car 1 vehicle body conveyor. However, the support elements 27a and 27b extend perpendicular upwards with respect to the two lateral elements 23a and 23b and the extension elements 25a and 25b of the door support body 18, and the door support body 18 has a lateral shape with an L shape. Accordingly, both two lateral elements 23a and 23b and extension elements 25a and 25b of the door support body 18 can be raised vertically laterally to the exterior of the vehicle body carrier car 1 without interfering with the car 1 vehicle body transporter.

The cam track 49 that follows the terminal end of the upward curved gradient region 49C of the cam track 49 constitutes an external horizontal linear region 49D that holds the door support body 18 of the door transport means 8 in the position of vertical lift by means of the impellers 47a and 47b cam followers. Therefore, the door support body 18 which was commuted to the vertical raised position moves to the exit of the door assembly work area shown in Figure 1 together with the vehicle body carrier car 1 while maintaining the vertical elevated position. That is, when the vehicle body carrier car 1 enters the door assembly work area shown in Figure 1, the door D within the door storage section 7A is extracted horizontally out of the side of the car. 1 vehicle body conveyor and is switched to the raised vertical position at the same time with the forward movement of the vehicle body carrier carriage 1 by means of the door transport means 8 and the cam track 49 which controls the position and position of the door transport means 8 at par with the translation of the carriage 1 of the vehicle body conveyor. Having switched the door D supported by means of the door support tool 19 on the U-shaped door support body 18 to the vertical raised position it adopts an upright position in which the base of the door D is down and horizontal - When the door D assumes the vertical raised position (the erect position) on the side of the vehicle body carrier carriage 1 has its inner surface oriented laterally to the exterior with respect to the vehicle body carrier carriage 1, as shown in FIG. Figure 13. Therefore, the operators who are in both lateral external parts of the carriageway can carry out the work of assembling parts, etc. with respect to the external surfaces of the doors D, as shown in Figure 2. If personnel conveyors 53a and 53b are juxtaposed, which are driven in synchronization with the carriage 1, vehicle body conveyor on both lateral external parts of the track of the carriage, the workers can carry out piece assembly work, etc. with respect to the internal surfaces of the doors D on the personnel conveyors 53a and 53b safely and easily without having to walk following the forward translation of the vehicle body carrier carriage 1. Furthermore, in the case where it is more convenient that the internal surfaces of the doors D that assume the raised vertical position in the side parts of the vehicle body carrier carriage 1 are oriented to the working areas 14a and 14b in both side parts of the vehicle body B in the trolley 1 of the vehicle body conveyor, as in the case in which the external lateral parts of the trolley travel path are both carried out with respect to the external surfaces of the trolleys. D doors that assume the raised vertical position in the side parts of the trolley 1 vehicle body conveyor, the occasion in which the workers standing in the work areas 14a and 14b in both side parts of the vehicle body B the car 1 conveyor of vehicle body carry out the work of assembly of parts, etc. with respect to the internal surfaces of the doors D, or the occasion when the workers standing in the work areas 14a and 14b remove the doors D from the door transport means 8 (the tool 19 for supporting the door) and carry out the work of assembling the doors D to the vehicle body B, the door support tools 19 that supported the doors D in the vertical raised position rotate by 180 degrees around the spindles 32 oriented vertically in this moment, with respect to the door support bodies 18, and then they can be switched to an inverted position as shown in Figure 15.

That is, as shown in Figure 19A, an operation of switching the locking pin 39 of the locking means 38 having the door support tool 19 fixed to the door support body 18 with the tool 19 is carried out. of door support being in the fixed position, from the inserted locked position to the loose retracted position with respect to the locking pin holding guide 45 by the lever pin 39a, and the locking pin 39 is separated from the element 40a of interlocking of the lateral element 23a of the door support body 18. After this, the door support tool 19 and the door D in the raised vertical position supported by the door support tool 19 are currently rotated around the spindle 32 oriented vertically in a direction in which the side element 30a of The frame (the shorter element 42) of the door support tool 19 moves away from the rotation restriction support plate 41a on the side of the side element 23a of the door support body 18. When the door D is rotated by 180 degrees with the door support tool 19, the lateral frame member 30b (the shorter element 42) of the door support tool 19 abuts against the rotation restriction support plate 41b on the side of the side element 23b of the door support body 18, as shown in the respective Figures B of Figures 17 to 19. Here, an operation of switching the locking pin 39 of the locking means 38 is carried out. the loosened position extracted to the locked position inserted with respect to the locking pin holding guide 45 by the lever pin 39a, and the distal end of the locking pin 39 is fixed in the pin hole of the locking element 40b in the part of the side element 23b of the door support body 18. By this, the door support tool 19 which rotated 180 degrees to the inverted position and the door D supported by the door support tool 19 are fixed to the door support body 18.

As described in the foregoing, with the 180 degree reversal operation of the doors D around the vertical axial center which were supported in the vertical raised position on both side parts of the vehicle body carrier car 1, a variety of work with respect to both, the internal and external surfaces of the doors D, and the work of assembling the doors D to the vehicle body B supported by the car 1 vehicle body conveyor while the car 1 body transporter of the vehicle is moved forward within the work area of door assembly shown in Figure 1. During this work, the carts 15A and 15B of storage of parts arranged in the work areas 14a and 14b on the carriage 1 body transporter of vehicle move as appropriate, and it is possible, use the parts, etc. which were stored in the storage carts 15A and 15B of parts. As a matter of course, the vehicle body support base 5 in the ascended position is lowered to the limit descent position by the lifting drive means 6 as shown by the virtual lines in Figure 2 and Figure 4 respectively, before the assembly work is carried out with respect to the vehicle body B.

The cam track 40 positioned at the outlet and its downstream portion of the door assembly work area shown in Fig. 1 is formed with a region 49E of downwardly symmetric downward curved gradient region-posterior to the region 49C of curved gradient toward above, a horizontal region 49F inclined to the interior symmetric frontal-posterior to the horizontal region 49B inclined to the outside, and a 49G linear internal region symmetric frontal-posterior to the internal linear region 49A, where 49C, 49B, 49A are provided each in the cam track 49 disposed at the entrance to the door assembly work area, so that they follow the terminal end of the external linear horizontal region 49D described above.

When the vehicle body carrier car 1 in which the door assembly work to the vehicle body B was completed, it moves forward to leave the door assembly work area shown in figure 1, the support body 18 of door which in the vertical raised position supports the empty door support tool 19 from which the door D was removed moves together with the vehicle body carrier carriage 1 maintaining the vertical elevated position until both of the pair of runners 47a and 47b front and rear cam followers of the door support body 18 leave the external linear horizontal region 49D. By leaving the external linear horizontal region 49D and approaching the subsequent region 49E of gradient curved downwards, the rear cam follower 47b descends by gravity as it is guided by the region 49E of gradient curved downwards with the translation of Advance of the carriage 1 vehicle body conveyor. That is, the door support tool 19 and the door support body 18 rotate integrally downwardly around the horizontal spindles 29a and 29b interposed with the lateral movement base 17 that waited in the forward limit position, together with the forward translation of the vehicle body carrier carriage 1. When the rear cam follower 47b reaches the terminal end of the curved downward gradient region 49E, the door support tool 19 and the door support body 18 which assumed the vertical raised position returns to the horizontal position shown in FIG. Figure 11. On the occasion when the door support tool 19 is kept switched to the inverted position of being provided by 180 degrees from the fixed position to assume the vertical raised position, the door support tool 19 can be returned to the original fixed position before the vehicle body carriage 1 is moved forward to leave the door assembly work area, or it may be allowed to move forward to leave the door assembly work area while remaining in the inverted position, depending on the circumstances.

Upon leaving the terminal end of the curved gradient region 49E downwardly of the cam track 49 and approaching the subsequent horizontal region 49F inclined inwardly, the rear cam follower 47b of the door support body 18 is pulled inwardly by the horizontal region 49F inclined to the inside of the cam track 49 together with the forward translation of the carriage 1 vehicle body conveyor. The entire door transport means 8 in the horizontal position composed of the lateral movement base 17, the door support body 18, and the door support tool 19 move laterally inwardly along the tracks 20a and Guide 20b. When the front cam follower 47a of the door support body 18 enters the interior linear region 49G of the cam rail 49, the door transport means 8 is returned to the original retraction limit position within the section 7A door storage. The cam track 49 is provided on the exit side of the door assembly work area with an opening between the terminal end of the gradient curved region 49E downward and the beginning end of the subsequent horizontal region 49F inclined to the interior , through which the rear cam follower 47b passes to enter the horizontal region 49F inclined to the interior.

The door transport means 8 within the left front door storage section 7A of each vehicle body carrier carriage 1 is controlled for position and position by the cam followers 47a and 47b and the cam track 49 side by side of the carriage travel path on par with the forward translation of the carriage 1 vehicle body transporter, as described in the preceding. The door transport means 8 within the door storage section 7B whose control description is omitted is subjected to the same control by the cam track 49. Furthermore, as shown in Figure 1, the cam track 50 on the opposite side is also formed with the respective regions 50A to 50G bilaterally symmetrical to the respective regions 49A to 49G formed on the cam track 49. Therefore, the door transport means 8 within the door storage sections 7C and 7D on the opposite side is subjected to bilateral symmetrical position and posture control with respect to the door transport means 8 within the sections 7A and 7B of door storage.

The specific configuration for carrying out the first to third aspects of the present invention should not be restricted to a preceding embodiment and may be modified as appropriate within the technical scope described in the claims. For example, the reciprocal movement of the door transport means 8 between the door storage section and the height control position is carried out by the cam follower wheel 47a provided in the door transport means 8 and the rail 49 of cam beside the carriage translation of the carriage in the first aspect of the invention. However, the raising and lowering of the door support body 18 of the door transport means 8 which was brought horizontally to the height control position, between the vertical raised position and the horizontal position can be configured to be done by hand or it may also be configured to be effected by means of a height control operation means which is driven by a power source, such as a cylinder unit or a motor mounted on the door transport means or on the side of the conveyor carriage of vehicle body. The door D in the raised position is configured so that its orientation is variable, 180 degrees around the spindle 32 oriented vertically, by providing the rotary door support tool 19 in the door support body 18 of the door transport means 8 . However, it is possible to omit the door support tool 19 to support the door D directly by the door support body 18.

In addition, the raising and lowering of the door support body 18 of the door transport means 8 in the height control position is carried out by the cam follower wheel 47a provided in the door support body 18 and the rail 49 cam next to the carriage carriage in the second aspect of the invention. However, the reciprocal movement between the door storage section and the height control position of the lateral movement base 17 pivotally supporting the door support body 18 described above so as to be able to rise and descend is it may be configured to be effected manually or also configured to be provided by a drive means for the lateral movement base driven by a power source such as a cylinder unit or a motor mounted on the door transport means or on the vehicle body transport vehicle. In addition, the door D in the raised position is configured to have variable orientation, 180 degrees around the spindle 32 of vertical orientation by providing the rotary door support tool 19 in the door support body 18. However, the door support tool 19 can be omitted to support the door D directly by the door support body 18.

In addition, the lateral movement of the lateral movement base 17 constituting the door transport means 8 and the raising and lowering of the door support body 18 which is supported in pivot in the lateral movement base 17 previously described to be capable of raising and lowering is configured to be performed automatically by the cam follower 47a provided in the door support body 18 and the cam rail 49 beside the carriage travel path in the third aspect of the invention. However, both or any of the actions of the lateral movement base 17 and the door support body 18 can be configured to be effected by the manual operation of workers, or also by means of a drive means operated by a power source. , such as a cylinder unit or motor, even if it is carried out automatically.

Industrial utility The vehicle body transport carriage in the automotive assembly line of the present invention can be used as a means capable of supplying doors to a door assembly work area that is located in the automotive assembly line using a carriage conveyor of vehicle body that transports a vehicle body.

Description of the reference symbols 1: Vehicle body transport trolley 5: Vehicle body support base 6: Lifting drive means 7A-7D: Door storage section 8: Door transportation 17: Base of lateral movement 17a. 17b: Lateral movement units 18: Door support body 19: Door support tool 20a, 20b: Guide rail 21,26: Horizontal axis roller 22: Vertical axis roller 23a, 23b: Both side elements 17c, 2, 31: Connection element 25a, 25b: Extension element 27a-28b: Support element 29a, 29b: Horizontal spindle 30a, 30b: Side frame element 32: Spindle 35-37: Door fastening accessory 38: Interlocking means 39: Operant interlocking pin 40a, 0b: Interlocking element 41a, 1b: Rotation restriction support plate 44: Tang Guide 45: Interlocking pin clamping guide 47a, 47b: Rodete follower of cam 49, 50: Cam track 49A, 50A: Interior linear region 49B, 50B: Horizontal region tilted to the outside 49C, 50C: Gradient region curved upwards 49D, 50D: External linear horizontal region 49E, 50E: Gradient region curved down 49F, 50F: Horizontal region inclined to the interior 49G, 50G: Interior linear region 52a, 52b: Contact element 53a, 53b: Personnel transporter B: Vehicle body D: Door

Claims (14)

1. A vehicle body carrier car in an automotive assembly line comprising: a door storage section that is provided under a conveyor car that carries a vehicle body on the automotive assembly line and stores a door in a horizontal position which is to be fixed to the vehicle body, and a door transport means for horzontally transporting the door from the door storage section to a height control position on a side portion of the carriage and allowing the door to rise vertical in the height control position, characterized in that the door transport means is supported under the transport carriage so that it can move horzontally and laterally and includes a door support body that can be switched between a horizontal position and a vertical raised position and a cam follower, and a cam track that laterally moving the door transport means between the door storage section and the height control position by means of the cam follower wheel on par with the translation of the conveyor carriage is placed next to the travel path of the conveyor carriage .

2. The vehicle body transport carriage in an automotive assembly line as claimed in claim 1, characterized in that the door transport means has a lateral movement base that moves laterally between the door storage section and the position of height control, and the door support body is pivotally supported on the lateral movement base so as to be able to rise and fall in an oscillating manner, and guide rails supporting the support body are provided on the transport carriage. of door and the base of lateral movement in a horizontal position while the door support body moves laterally between the door storage section and the height control position integrally with the base of lateral movement.

3. The vehicle body transport carriage in an automotive assembly line as claimed in claim 2, characterized in that the base of lateral movement is composed of a pair of lateral movement units that are arranged spaced in a direction of translation of the carriage transporter and a connecting element connecting the two lateral movement units to each other, and the door support body is disposed between the pair of lateral movement units and has the portions of both sides supported in pivot in the pair of movement units. side by means of mutually concentric horizontal spindles so that it is capable of raising and lowering, and the guide rails support for lateral movement both of the pair of lateral movement units and the two lateral portions of the door support body, and only the body of door support separates from the guide rails and becomes able to rise and descend oscillating with respect to the pair of lateral movement units when the door support body reaches the height control position.

4. The vehicle body transport carriage in an automotive assembly line as claimed in any of claims 1 or 2, characterized in that the cam follower is provided as a pair, and the cam followers are supported in pivot spaced apart in a direction of translation of the conveyor carriage, and the cam rail acts on the cam follower on the side of the translation direction of the conveyor carriage when the door transport means moves laterally advancing from the door storage section to the height control position, but acts on the cam follower on the side opposite to the side of the translation direction of the carriage when the door transport means retracts and moves laterally from the height control position to the door storage section.

5. The vehicle body carrier car in an automotive assembly line as claimed in claim 1, characterized in that the cam follower is provided in the door support body of the door transport means, and the cam track comprises regions that laterally move the base of lateral movement between the door storage section and the height control position, and regions that cause the door support body located in the height control position to rise and fall together with the base of lateral movement by means of the follower cam follower with the translation of the transporter carriage.

6. A vehicle body carrier car in an automotive assembly line comprising: a door storage section that is provided under a conveyor car that carries a vehicle body on the automotive assembly line and stores a door in a horizontal position which is to be fixed to the vehicle body, and a door transport means for horizontally transporting the door from the door storage section to a height control position on a side portion of the carriage and allowing the door to rise vertical in the height control position, characterized in that the door transport means includes a lateral movement base supported under the conveyor carriage so that it can be moved horizontally and laterally between the door storage section and the control position height, a door support body that is supported on pivot e n the lateral movement base so that it is capable of rising and falling oscillatingly between a horizontal position and a vertical elevated position, and a cam follower is provided on one side of the carriage of the carriage. the door support body, and a cam track that causes the door support body located in the height control position to be raised together with the base of lateral movement by means of the cam follower on par with the translation of the transporter carriage.

7. The vehicle body transport carriage in an automotive assembly line as claimed in claim 6, characterized in that the guide rails supporting the door support body and the lateral movement base are provided in a position in the transport carriage. horizontally while the door support body moves laterally between the door storage section and the height control position together with the lateral movement base.

8. The vehicle body transport carriage in an automotive assembly line as claimed in claim 7, characterized in that the base of lateral movement is composed of a pair of lateral movement units that are arranged spaced in a direction of translation of the carriage transporter and a connecting element connecting the two lateral movement units to each other, and the door support body is disposed between the pair of lateral movement units and has the portions of both sides supported in pivot in the pair of movement units. side by means of mutually concentric horizontal spindles so that it is capable of rising and falling, and the guide rails support for lateral movement both of the pair of lateral movement units and the door support body, and the door support body is separates from the guide rails and becomes able to rise and fall in an oscillating manner when the body of door support reaches the height control position.

9. The vehicle body carrier car in an automotive assembly line as claimed in claim 6, characterized in that the cam follower is provided as a pair.,: and the cam followers are supported in pivot spaced apart in a direction of translation of the conveyor carriage, and the cam track acts on the cam follower on the side of the translation direction of the conveyor carriage when the body The door support is swinging from the horizontal position to the vertical raised position, but acts on the cam follower on the opposite side of the translation direction of the conveyor carriage when the door support body is caused to oscillate from the door. vertical elevated position to the horizontal position.

10. The vehicle body carrier car in an automotive assembly line as claimed in claim 6, characterized in that the cam track comprises regions that laterally move the base of lateral movement of the door storage section and the height control position. by means of the door support body, and regions that cause the door support body located in the height control position to raise and lower together with the base of lateral movement by means of the cam follower at par with the translation of the transporter carriage.

11. A vehicle body carrier car in an automotive assembly line comprising: a door storage section that is provided under a conveyor car that carries a vehicle body in the automotive assembly line and stores; in a horizontal position a door to be fixed to the vehicle body, and a door transport means for horizontally transporting the door from the door storage section to a height control position on a side side portion of the carriage conveyor and allow the door to rise vertically in the height control position, characterized in that the door transport means includes a lateral movement base supported below the conveyor carriage so that it can be moved horizontally and laterally between the storage section of door and height control position, and a door support body that is pivotally supported on the lateral movement base so that it is capable of rising and falling oscillating between a horizontal position and a vertical raised position, and the door support body is provided with a door support tool and supported in pivot about vertically oriented screw spindle when the door support body is in the upright vertical position, and a locking means for locking the door support tool to the door support body in an orientation such that the door which was supported by the door support tool becomes parallel to the door support body.

12. The vehicle body transport carriage in an automotive assembly line as claimed in claim 11, characterized in that the locking means can lock the door support tool in the door support body, both in a position in the which an external surface of the door supported by the door support tool is oriented towards the side of the vehicle body carriage and an inverted position in which the inner surface of the door supported by the door support tool is oriented to the side of the vehicle body carrier carriage when the door support body is in the vertical raised position.

13. The vehicle body carrier car in an automotive assembly line as claimed in any of claims 11 or 12, characterized in that the door support tool supports the door in an orientation such that a base thereof is facing downwardly. when the door support body is in the vertical raised position in the height control position, and the door support tool is formed with a U-shape surrounding three sides of the base and both front and rear sides of the The door and the U-shaped door support tool have sides that are fixed respectively with door fastening accessories, and the door support body is formed with a U-shape that surrounds the shaped door support tool of U in the same orientation as the door support tool when in the vertical upright position in the height control position, and the base of the tool The door support bracket is rotatably and pivotally supported on a base of the U-shaped door support body by the spindle, and the locking means is disposed between a side part of the door support body and a lateral part of the door support body. the door support tool.

14. The vehicle body transport carriage in an automotive assembly line as claimed in claim 11, characterized in that the locking means is composed of elements that control an angle of rotation of the door support tool with respect to the support body of door and a locking pin which is inserted and removed inserted through the door support body and the door support tool placed in position by the control elements of the angle of rotation.