JPH0615778Y2 - Underbody assembly device for automobile assembly line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a body part including a front article part having a front undercarriage device and a rear article part having a rear undercarriage device. Body transporting means for transporting the body to the upper part of the setting location and for moving the body downward to set the article on both article parts. The body transporting means is provided with a carrier having a hanger frame that can travel along a predetermined path and can be raised and lowered. Four body locking frames for supporting are provided, and a body locking frame for supporting the front end side of the body is engaged with a front end portion of the body from below from a front side. An underbody part of an automobile assembly line in which a rear locking pin that is engaged with a rear end portion of the body from below is provided in a body locking frame that is provided with a cup pin and that supports the rear end side of the body. Regarding the assembling device.

[Conventional technology]

Such an underbody assembly device for an automobile assembly line holds both front side and rear side article parts in a state where they are positioned in a setting position with the body, and the body is conveyed to a setting position of the body. The work is carried out in the procedure of setting both article parts as they are moved down from the upper part.

Also, since the body is supported by the carrier while the front end side portion and the rear end side portion of the body are positioned by the lock pins, if the carrier is operated accurately, the body can be accurately moved to both article parts. It can be supplied well.

[Problems to be solved by the invention]

By the way, the wheel base may be different due to the difference in vehicle type, and accordingly, it may be necessary to change the front and rear positions of the lock pin provided on the carrier.

As a means for changing the front-rear position of the lock pin, a means for changing the position of the lock pin in the front-rear direction and attaching it to the carrier can be considered. However, in the case of this means, not only the troublesome work of having to replace the lock pin according to the wheel base is required, but also there is a risk of forgetting to replace the lock pin and causing a work mistake. It's difficult.

Further, as a technique for positioning a body and a positioning member in an automobile assembly line, there is a technique described in JP-A-60-240388. In this technique, two lock pins are attached to a peripheral portion of a rotary shaft arranged in the horizontal direction on the opposite side in the radial direction by 180 ° and slightly displaced in the axial direction of the rotary shaft. By rotating the rotating shaft by 180 ° by the motor to change the lock pin corresponding to the body, it is possible to deal with the body having different positions of the positioning holes. With such a configuration, although the work of replacing the lock pin is omitted, there is a disadvantage that the motor and the control means therefor are required and the device configuration becomes complicated.

The present invention has been made in view of the above circumstances, and an object thereof is to allow various bodies having different wheel bases to be properly supported and transported, but without requiring a special operation. The point is that the lock pin provided on the carrier can be used for accurate positioning with a simple structure.

[Means for solving problems]

The characteristic structure of the underbody assembly device for an automobile assembly line according to the present invention is that the left and right body locking frames that support the front end portion of the body and the left and right body locking frames that support the rear end portion of the body. The frame is arranged at the same position in the front-back direction, and there are a plurality of types of the lock pin on the rear side or the lock pin on the front side in which the installation position on the body locking frame is different in the front-back direction. The lock pins are provided so that they can be moved up and down and urged to return to the upper side so that they can be retracted and displaced downward by contact with the body. It is as follows.

[Action]

That is, of the four body locking frames provided on the carrier, the left and right ones that support the front end side portion of the body support the body from the left and right at the same position in the front-rear direction, and the rear end side portion of the body. Since the left and right things that support the body support the body from the left and right at the same position in the front-rear direction, the body can be stably supported in a good balance. Moreover, among a plurality of types of lock pins whose installation positions on the body locking frame are different in the front-rear direction according to the change of the wheel base, the lock pin corresponding to the wheel base of the current body is the engagement recess of the body. And the other lock pin is displaced rearward downward against the upward biasing force due to the contact with the body.

[Effect of device]

Therefore, as the lock pin, a plurality of types of return biasing type lock pins are provided, which are displaced rearward downward against the upward biasing force by contacting with the body, with the installation position being different in the front-back direction. Since the position is determined by the lock pin regardless of the change of the wheel base of the body, special operation for the lock pin is unnecessary, and the actuator is not required, while the structure is simple.
Various bodies having different wheel bases can be supported by the carrier while being positioned by the lock pins.

Moreover, when a plurality of types of return biasing type lock pins are provided with different installation positions in the front-back direction, the left and right body locking frames that support the front end side portion of the body and the rear end side portion of the body are supported. Since the left and right body locking frames are located at the same position in the front-rear direction and the installation positions of the lock pins with respect to the body locking frame are different in the front-rear direction, the body can be stably supported in a well-balanced manner. That is, when the return biasing type lock pin is to be installed at different installation positions in the front-rear direction, as shown in FIG. 8, for example, the left and right body locking frames that support the rear end side portion of the body (B).
(6A) are provided at different positions in the front-rear direction, and a reset biasing lock pin is provided at the center of the front-rear direction of each body locking frame (6A).
(Q ₂ ) may be provided, but in this case the positions of the left and right body locking frames (6A) are
Although the support of (B) is likely to be unstable, in the present invention, the body can be stably supported with good balance as described above.

Therefore, while supporting the body in a well-balanced and stable manner and allowing good transportation, it is possible to simplify the work by eliminating the need for special work on the lock pin, and at the same time, make a mistake in the work due to the lock pin. This makes it possible to eliminate the need for the setting work for bodies with different wheel bases.

Embodiments of the present invention will be described below with reference to the drawings.

First, the automobile assembly line will be briefly described with reference to FIG.

The exemplified automobile assembly line consists of a main line (L ₁ ) constructed using an overhead conveyor system, a sub line (L ₂ ) equipped with a jig pallet (P), and an overhead conveyor system. It is equipped with a relay line (L ₃ ).

Then, the body (B) that is being assembled is delivered to the sub line (L ₂ ) from the middle of the main line (L ₁ ) and
_{In 2} ), the engine, undercarriage relation, boarding seat, tires, exhaust relation are assembled to the body (B), and the assembled bonnet (B) is connected via the relay line (L ₃ ). It is delivery to a main line (L _1), and are again at the main line (L _1), so that the final assembling respect delivery has been the body (B) is performed.

The sub-line (L ₂ ) will be described. The jig pallet (P) includes an engine, a front-side article portion (X ₁ ) including a front undercarriage device, and a rear undercarriage device. It is configured so that it can be placed freely with the rear article part (X ₂ ) positioned, and of course, it has a function of conveying the jig pallet (P) along the line.

Then, at the article supply point (X ₁ ), both article parts (X ₁ ), (X ₂ )
Are loaded on the jig pallet (P), and the jig pallet (P) is conveyed to the setting location (K ₂ ), and the body (B) is placed on the article parts (X ₁ ), (X ₂ ). After setting, transfer the jig pallet (P) to the tightening point (K ₃ ) and use the bolts and nuts to set the set body (B) and both article parts.
(X ₁ ) and (X ₂ ) are fixed. Although the following steps will not be described in detail, while the jig pallet (P) is being conveyed, the mounting of the riding seat, the tires, and the exhausts are performed as described above.

The setting of the body (B) and the article parts (X ₁ ), (X ₂ ) will be described below while describing the structure of each part. It should be noted that although both article parts (X ₁ ) and (X ₂ ) are illustrated, a suspension device and the like are omitted.

As shown in FIG. 6, the jig pallet (P) includes a holding portion (H ₁ ) for the front article part (X ₁ ) and a holding portion (H ₂ ) for the rear article part (X ₂ ). ₂ ) and are provided.

Each holding part (H ₁ ), (H ₂ ) is not described in detail, but each holding part (X ₁ ),
(X ₂₎ the catch plurality of receptacle and each article unit (X _1), and a lock pin for positioning which engages from below in (X _2). Also, the rear side holding part (H ₂ ) should be adjusted according to the change of the wheel base. The position can be adjusted in the front-back direction.

Roller conveyor device over the entire length of the sub line (L ₂ )
(D) and a moving body (A) for locking and moving the jig pallet (P) are provided to constitute a pallet conveying means.

The moving body (A) travels along the guide (1), and a pallet locking tool (2) is attached to the upper part thereof.

In addition, the jig pallet (P) is positioned at a predetermined position at the setting location (K ₂ ) and tightening location (K ₃ ) by the locking means using the lock pin etc. It is supposed to be done.

The body (B) supplied from the midway point of the main line (L ₁ ) to the sub-line side is moved to the upper part of the setting point (K ₂ ) by the body transfer means (G) described below, and then moved downward. The article parts (X ₁ ) and (X ₂ ) are then set.

Incidentally, (3) in the figure is a moving body for relay transfer which transfers the body (B) supplied from the main line (L ₁ ) to the starting end of the body transfer means (G), and is a guide (4). ) To make a round trip.

As shown in FIGS. 3 and 4, the body transporting means (G) includes a carrier (M) that runs in a suspended state along a pair of upper and lower guide rails (5), a so-called overhead. It is composed of expressions.

The carrier (M) includes a pair of left and right square hanger frames (6), and the front and rear ends of the hanger frames (6) have left and right sides of the front and rear ends of the body (B). Four body locking frames (6A) for supporting the parts from below are pivotally attached so as to swing forward and backward about the longitudinal axis. The four body locking frames (6A) are configured to be swingable by an air cylinder.

As shown in FIG. 1, the body locking frame (6A) has a body (B)
In the state of being swung to the side that supports the
(6) Left and right body locking frames (6A) and (6A) that support the front end side portion of the body (B) at the front end, and the rear end of the body (B) at the rear end of the hanger frame (6). The left and right body locking frames (6A) and (6A) that support the end portion are arranged at the same position in the front-rear direction.

Left and right body locking frames that support the front end of the body (B)
The front end of (6A), (6A) is provided with a front lock pin (Q ₁ ) that engages with the front end of the body (B) from below, and the rear end of the body (B) is Left and right body locking frame (6A) to support,
A rear lock pin (Q ₂ ) engaging with the rear end portion of the body (B) from below is provided at the front end of (6A).

The lock pin (Q ₁ ) on the front side is provided at the same position in the front-rear direction so that it can be engaged with the body (B) having a different wheel base.

As for the rear lock pin (Q ₂ ), the left lock pin (Q ₂ ) is closer to the front side than the front-rear center of the body locking frame (6A), and the right lock pin (Q ₂ ) is the body lock. It is installed on the rear side of the center of the frame (6A) in the front-rear direction, and there are multiple types of installation positions on the body locking frame (6A) that differ in the front-rear direction. Are engaged with each other.

That is, as shown in FIG. 2, the lock pin (Q
₂ ) is supported by the body locking frame (6A) so as to be able to move up and down, and is urged to return to the ascending side by the spring (S) .Therefore, the lock pin (Q ₂ ) on the rear side is engaged with the engaging action. In the case of the body (B) which is not used, the body (B) is configured so that it can be displaced backward by contact with the body (B).

Therefore, the carrier (M) has two lock pins on the front side.
The body (B) is supported in a state of being positioned by (Q ₁ ) and one lock pin (Q ₂ ) on the rear side.

Further, the carrier (M) includes a pinion (8) driven by an electric motor (7) for propulsion, and the pinion (8)
However, by engaging with the rack (9) installed along the guide rail (5), the vehicle can travel.

The left and right hanger frames (6) are slidably supported by a support portion (10) on the carrier body side, and the rack (11) is attached to the frame portion along the vertical direction of each hanger frame (6). ) Is formed. And, the pinion (12) that engages with the rack (11) is the support portion (10).
The left and right hanger frames (6) are moved up and down by driving and rotating the pinion (12) in the forward and reverse directions.

The four pinions (12) are driven by a single lifting electric motor (13) as schematically shown in FIG.

That is, a pair of front and rear pinions (12) on the left side and a pair of front and rear pinions (12) on the right side are connected by a transmission shaft (14) so as to rotate integrally, and the left and right transmission shafts (14) are connected. A drive shaft (15) connected to each of the above is provided with a bevel gear, and the drive shaft (15) is gear-connected to the lifting electric motor (13).

As shown in FIGS. 4 and 6, the setting state of the body (B) and the article parts (X ₁ ), (X ₂ ) is held on the rear side of the jig pallet (P). The pair of left and right engaging pins (16) connected from the portion (H ₂ ) are engaged with the engaging holes (not shown) on the body side, and the three fastening pins attached to the front end side of the body (B) are attached. Attach the bolts (17) for attachment to the base frame of the article part (X ₁ ) on the front side.
It is engaged with an engagement hole (not shown) formed in (F ₁ ).

In the figure, (18) is a holding tool for steadying the hanger frame (6), and is configured to be engageable with and disengageable from an engagement pin (19) provided at the lower end of the hanger frame (6). In addition, it is supported so as to be able to move up and down along the ground side guide (20), and further, although not illustrated, it is returned to the upper side in a descending state when pushed by a force of a certain amount or more by an air cylinder. It is like this.

[Another embodiment]

In the above embodiment, the jig pallet (P) is used to
Although (X ₁ ) and (X ₂ ) are held at the setting location, other means may be used to hold both article parts (X ₁ ) and (X ₂ ).

When the jig pallet (P) is used to implement the present invention as in the above-described embodiment, in addition to both article parts (X ₁ ), (X ₂ ), other tanks, pipes, etc. It is also possible to hold the vehicle undercarriage members of (1) on the jig pallet (P) and assemble them also to the body (B). Further, the present invention can be applied not only to the front engine type but also to the mid engine type and the rear engine type.

In the example above, the rear lock pin (Q ₂ )
Although it can be moved backward by contact with (B), the position of the front lock pin (Q ₁ ) can be changed in the front-rear direction and it can be moved backward by contact with body (B). May be. However, in general, with the position of the front end of the body (B) fixed, in order to cope with the change of the wheel base, it is possible to rearwardly displace the lock pin (Q ₂ ) as in the above embodiment. I often do it.

Further, in the above-mentioned embodiment, the body (B) is positioned by the three lock pins (Q ₁ ) and (Q ₂ ).
You may position with (Q ₁ ) or (Q ₂ ). That is, for example, as the rear lock pin (Q ₂ ), one pair may be provided on the front side and one pair on the rear side.

Further, in carrying out the present invention, the specific configuration of the carrier (M), etc.
The specific configuration of each part can be changed in various ways according to the object of use.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

1 is a schematic plan view of a carrier, and FIG. 2 is a cutaway front view showing a mounting portion of a lifting lock pin according to an embodiment of the present invention. , FIG. 3 is a side view of the carrier, FIG. 4 is a front view of the carrier, FIG. 5 is a schematic plan view of the transmission system, FIG. 6 is a schematic side view of the undercarriage mounting portion, and FIG. 7 is an automobile assembly. FIG. 8 is a schematic plan view of the line, and FIG. 8 is a schematic plan view showing a comparative example. (6) …… Hanger frame, (6A) …… Body locking frame, (B)
…… Body, (G) …… Body transfer means, (M) …… Carrier, (Q ₁ ) …… Front side lock pin, (Q ₂ ) …… Rear side lock pin, (X ₁ ) …… Front side goods section, (X ₂ ) ...... Rear side goods section.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Usui, 3-2-11 Minejima, Nishiyodogawa-ku, Osaka City, Osaka Prefecture Daifuku Co., Ltd. (72) Haruo Oda 3-2-11, Minejima, Nishiyodogawa-ku, Osaka City, Osaka Prefecture Issue Daifuku Co., Ltd. (56) Reference JP-A-62-216878 (JP, A) JP-A-62-149571 (JP, A) Practical application Sho-60-167627 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A front article part (X ₁ ) provided with a front suspension device and a rear article part (X ₂ ) provided with a rear suspension device are set with a body (B). Where
A body which is configured to be held in a positioned state, conveys the body (B) to the upper part of the setting location, and moves it downward to set it on both the article parts (X ₁ ) and (X ₂ ). Conveying means (G) is provided, and the body conveying means (G) is provided with a carrier (M) having a hanger frame (6) that can travel along a predetermined path and that can move up and down. The carrier (M) is provided with four body locking frames (6A) that support the left and right side portions of the front and rear end portions of the body (B) from below, and supports the front end side of the body (B). Body locking frame (6A)
A front lock pin (Q ₁ ) engaged with the front end portion of the body (B) from below is provided in the body lock frame (6A) supporting the rear end side of the body (B).
In the underbody assembly device of an automobile assembly line, a rear lock pin (Q ₂ ) engaged with a rear end side portion of the body (B) from below is provided. ) Left and right body locking frames (6A), (6A) supporting the front end side portion, and left and right body locking frames (6A), (6A) supporting the rear end side portion of the body (B) Are arranged at the same position in the front-rear direction, and the rear lock pin (Q ₂ ) or the front lock pin (Q ₁ ) is installed in the front-rear direction in the installation position on the body locking frame (6A). There are several different types, and each of these multiple types of lock pins (Q ₂ )
An underbody assembly device for an automobile assembly line, which is provided so as to be able to move up and down and urged to return to the upper side so that it can be rearwardly displaced by contacting with.