JPS58199276A - Equipment for positioning vehicle body - Google Patents

Abstract

PURPOSE:To enable the positioning of many kinds of vehicle bodies, by grouping members for positioning the behicle bodies and by mounting the members on base members. CONSTITUTION:Manu positioning members 38c are provided to secure many kinds of vehicle bodies at plural parts in prescribed positions. In each of the positioning members 38c, they are divided into subgroups for the kinds of the vehicle bodies. The subgroups of the positioning members 38c are borne by support members 17, 18, 35, 39 which are arranged in the direction of conveyance of the vehicle bodies. The groups of the positioning members 38c are mounted on base members 7, 8, 9. A drive means for moving the base members 7, 8, 9 back or forth in the direction of conveyance of the vehicle bodies to position the support members 17, 18, 35, 39 depending on the kind of the vehicle body is provided. According to this constitution, the many kinds of vehicle bodies can be positioned and coping with a new vehicle body is enabled by simple work.

Description

[Detailed Description of the Invention] This invention relates to a vehicle body positioning device for setting conveyed vehicle bodies at a predetermined position in a processing station in a production line where automobiles are assembled. The present invention relates to a vehicle body positioning device.

In a production line in which car bodies are transported by transport means and cars are assembled by assembly lines, the car bodies are sequentially stopped at a number of processing stations and subjected to various types of processing.
It is necessary to support and fix it at the processing station before processing. Further, when such a vehicle body is processed by an automatic processing machine such as a welding robot, the vehicle body must be accurately positioned at a predetermined position. To this end, various positioning devices have been conventionally provided for positioning and fixing a transported vehicle body, such as a cab site, at a predetermined position in a processing station.

On the other hand, recently, so-called multi-model mixed production, in which a large number of Class 1, 1, and 1 vehicles are produced within one production line using the assembly line operations described above, has become widespread.

In this multi-model mixed production line, the above-mentioned vehicle body positioning device must be designed so that it can be used for many types of vehicle bodies having different shapes and sizes. For this reason, in the past, positioning devices and devices that were compatible with multiple vehicle models were often used, replacing parts and moving many movable parts depending on the type of vehicle body. The structure was extremely complex, and the production line had to be stopped for a long period of time when new models were introduced due to model changes, etc. The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a vehicle body positioning device for mixed production of multiple vehicle models that has a simple structure and can easily handle the introduction of additional vehicle models. do.

The vehicle body positioning device of the present invention has a plurality of positioning members each positioning and fixing a plurality of parts of the vehicle body in large numbers according to various types of positioning parts of the vehicle body, and a large number of positioning members provided for each of the plurality of parts. are arranged in groups for each part, and in each group, the positioning members are divided into blocks according to the type of car body, each block is supported by a support member, and the support members are arranged in the conveyance direction of the car body. Each group is attached to a base member, and a driving means is provided for moving the base member forward and backward in the transport direction of the vehicle body so as to position each support member according to the type of vehicle body.

The vehicle body positioning device of the present invention having the above configuration moves the base member forward and backward by the driving means when a vehicle body of a certain vehicle type is transported, and positions the vehicle body supported by the support member for that vehicle type fixed to each base member. By moving the member to the positioning portion of the vehicle body, it is possible to position many types of vehicle bodies. In addition, when a car model is changed or added due to a model change, etc., a new positioning member is added to the existing support member, or the positioning member already in use is replaced with one for the body of the new car model. It can be adapted to a new car body with simple tasks such as changing the settings of the stopping positions of parts.

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

FIG. 1 shows a vehicle body positioning device according to an embodiment of the present invention (FIG. 2 is a sectional view taken along the line ■-■. The cab side 1 has two hanging hooks extending downward from the conveying means 2 and a hanger 3.
．． The hanger is supported on the hanger 3.4 by means of its lower surface engaged with hooks 3a, 4a formed outwardly at the lower end of the hanger 3.4. Further, hooks 3b and 4b are provided in the middle of the hanger 3.4 to engage with the upper part 1b of the cab side. The hanging is supported by either the hook 3a14a or the hooks 3b and 4b, and the other one provides a steady rest. The hanger 3.4 is moved in the direction of arrow F in the figure by the conveying means 2, and sequentially conveys the cab side 1 to a number of processing stations.

In Fig. 1, only the positioning device for positioning the cab side 1 on the left side of the vehicle body is shown, but on the right cab side, the hanging hook paired with the hanging hook 3.4 is
A positioning device similar to that shown in FIG. 1 is also provided for the right cab side, since they are conveyed together by the engine and subjected to the same processing at the same time (this point will be explained in detail later).

A front base 7, a center base 8, and a rear base 903 are mounted on rails 6 fixed to the upper surfaces of two floor frames 5 extending in the front-rear direction of the vehicle, along the rails 6, that is, on the cap side 1. It is arranged to be movable in the front and rear directions. At the rear of the floor frame 5, a rear end of a cylinder 10 is supported with a piston 10a facing forward. The piston 10a of this cylinder 10 is connected to a connecting member 8a fixedly attached to the central base 8.

Further, a cylinder 11 is fixed to the front part of the central base 8, and the piston lla faces forward. Similarly, the central base 8 and the rear base 9 are connected to the cylinder 12 and the piston 1.
2a.

Hereinafter, the apparatus on the front base 7 will be explained in detail with reference to FIG. 2 as well. At the front of the front base 7 are two frames 13. which extend in a direction perpendicular to the floor frame 5.
14 are provided, and rails 15.16 are laid on these frames 13.14. A pair of left and right support members 17.18 are disposed on these rails 15.16 so as to be movable along the rails 15.16, that is, in the left-right direction of the vehicle body. A guide plate 19 is fixed to the lower part of the first support member 17 on the left side of the vehicle body, and a guide hole (not shown) provided in the lower part of the guide plate 19 has a guide hole (not shown) provided in the front base 7 parallel to the rail 15.16. A guide bar 20 whose orientation is fixed is inserted. (A similar guide plate is also provided on the right support member 18 and is combined with the guide bar, but these are not shown in FIG. 2.) The first support member 18 on the right side of the vehicle body has a cylinder 21. The rear end of the cylinder 21 is fixed, and the tip of the piston 21 of the cylinder 21 is fixed to the first support member 17 on the left side. In this embodiment, both support members 17.
18, but separate cylinders may be provided so that they can move independently. □ Two positioning members 22 are installed on the upper part of the first support member 17.
A and 22B are provided.

Hereinafter, the positioning member 22A shown in FIG. 2 will be described. , a 2271 member 25 supported by a guide rod 24a, a cylinder 26 disposed on the upper part of the ring member 25 with a piston 26a facing outward, and a piston 2 of this cylinder 26.
It consists of a clamp member 28 which is pivotally supported on a shaft 27 at the tip end of the clamp member 6a. The clamp member 28 is pivotally supported on a shaft 31 at the other end of the link arm 3o, which has one end rotatably supported by the clamp member 25 about a shaft 29.

One positioning member 22B is basically formed in the same way as the positioning member 22A, but the shape and level of the clamp member are changed depending on the vehicle type (this point will be described in detail later). And the first support member 1 on the right side of the vehicle body
8 is provided with two positioning members (not shown) formed laterally symmetrically with these positioning members 22A and 122B.

The left-right symmetrical arrangement of the support members and the left-right symmetrical arrangement of the positioning members as explained above are applied to all the support members and positioning members described below, and will not be explained in detail below.

The first support member 1 is provided at the center and rear part of the front base 7.
7, the second and third positioning members each have two positioning members.
Support members 32, 33 are provided (in FIG. 1 only the mounting position is shown by the dash-dot line). The two positioning members provided on these supporting members 17, 32, and 33 differ depending on the vehicle model, but they are all formed to clamp the fluorocarbon pillar on the cab side.

At the front of the central base 8, a first support member 35 is formed basically in the same manner as the first support member 17 described above, and includes three different positioning members 34A, 34B, and 34C'i'.
is provided. Similarly to the first support member 35, second and third support members 36 and 37 (only their positions are shown) each having three positioning members are provided at the center and rear part of the central base 8. There is. Each positioning member provided on the central base 8 also differs depending on the vehicle type, but each is formed so as to clamp the roof side near the center pillar on the side of the cab.

Similarly, at the front of the rear base 9, a first support member 39 is provided with three different positioning members 38A, 38B, and 38C.
However, second and third support members 40, 41 (only their positions are shown) each having three positioning members are similarly provided at the center and rear portions. Each positioning member provided on the rear base 9 also differs depending on the vehicle type, but is formed so as to clamp the base of the cabin on the cab side.

The operation of the positioning device of this embodiment having the above configuration will be explained below. FIG. 1 shows the positioning members 22A, 34A of each first support member 17.35.39 of each base 7.8.9;
38A shows a state in which the left side cab side 1 is positioned. These positioning members 22A134A1
The positioning operation by the positioning member 38A will be explained using the positioning member 22A shown in FIG. 2 as a representative. When the cab side 1 is being transported, the piston 21a of the cylinder 21 is sufficiently compressed and the cylinder 21 is in the state shown by the two-dot chain line in FIG.

Therefore, the first support member 17.18 has an outer end surface 2 in the figure.
They are moved close to each other until they reach the position indicated by the dotted chain line. At this time, the piston 23a of the cylinder 23 and the piston 26a of the cylinder 26 are also sufficiently compressed, the clamp member 25 is located at the position indicated by the two-dot chain line in the figure, and the clamp member 28 is flipped up above the clamp member 25. (In other words, when the piston 26a of the cylinder 26 is compressed, the link arm 30 rotates counterclockwise in the figure around the shaft 29, and the shaft 31 is at the level of the shaft 27.) Stand up and flip up the clamp member 28 until it is aligned)
. Therefore, the hanger 3.4 can be moved without hitting these clamping members 25.28.
- When the engine 3.4 is stopped and the cab side 1 is stopped at a predetermined position, the piston 21 of the cylinder 21 is extended and the first support member 17.18 moves outward to the position indicated by the solid line in Figure 2. .

At the same time, the piston 23a of the cylinder 23 is extended, and the clamp member 25 moves outward to the position indicated by the solid line in the figure where it comes into contact with the inner surface of the cab side 1. At this time, naturally, the clamp 71 member of the other positioning member 22B (remains stopped), the clamping member 28 is in the position indicated by T in the figure. After this, the piston 26a of the cylinder 26
When the link arm 30 is extended, the clamp member 28 swings to a position where it comes into contact with the outer surface of the cab side 1.
It descends and attaches to the cab side 1 together with the clamp member 25.
Clamp and support in place.

Other first support members 35, 39 and positioning members 3
4A and 38A also position the cab side 1 by the same operation. Further, other supporting members and positioning members that are not used in the state shown in FIG. 1 operate in the same manner as the first supporting member 17 and positioning member 22A described above.

The cab side 1 is attached to the positioning member 22A as described above.
, 34A, 38A, and then subjected to processing such as additional welding by a welding robot. When this machining is completed, the clamp on the cab side 1 is released by an operation opposite to the positioning operation described above. And the cylinder (2
1) is compressed, the first support member retreats inward, and the hanger 3.4 is moved to the cab side 1.
is transported to the next processing station.

Positioning members 22B other than the positioning members 22A, 134A, and 38A, with the arrangement of the first support members 17, 35, and 39 shown in FIG. 1 as they are.

34B, 38B, or 228134C.

38C, it is possible to position two types of cab sides that are slightly different in shape and size from the cab side 1 (the positioning member 22B is commonly used using the cylinder 11).

Furthermore, by operating cylinders 10, 11, and 12, base 7.
8.9 is moved back and forth in the longitudinal direction of the vehicle body, and the second support member 32.
36.40 set, and third support member 33.37.41
By using the set of , it is possible to position a cab side whose shape and size are considerably different from the cab side 1 described above. When using 32, 36, and 400 sets of second support members, it is possible to accommodate three types of cab sides with slightly different shapes and sizes by selecting the respective positioning members, and in the same way, the third support member Part 33.37.41
Even when using this set, three types of cab sides can be accommodated. In other words, the positioning device of this embodiment can position a total of nine types of cab sides.

The selection of the supporting member by moving the base 7.8.9 back and forth as described above or the selection of the positioning member (this is done by switching the pressure fluid supply to the cylinder) depends on the type of cab side 1 being transported. It will be done accordingly.

Although it is not necessarily necessary to provide each support member with a plurality of positioning members, by doing so, it is possible to increase the number of vehicle types that can be handled.

When a new vehicle model is changed or added due to a model change, etc., the positioning members supported by each support member may be replaced with those for the new vehicle model, and the stop position settings of each base may be changed. Note that, unlike the above embodiment, if a predetermined number of positioning members are not yet attached to each support member, new positioning members can be additionally installed to accommodate new vehicle models.

As explained in detail above, the vehicle body positioning device of the present invention has a simple structure and can be applied to mixed production of multiple vehicle models, and can handle additions and changes of vehicle models with simple operations. It is possible to keep the line stop period short.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is a side view showing one embodiment of the present invention.
It is a sectional view taken along the line ■-■ in the figure. ■ ... Cab side 2 ... Transport means 3.
4... Hanging hanger 5... Floor frame 6...
...Shi-ru 7...Front base 8...
Central base 9...Rear base 10.11.12.23
．． 24.26...Cylinder 17.18.35.39 ・
......First support members 22A, 22B,
34A, 34B, 34C, 38A, 38B.

Claims (1)

[Claims] In a car body positioning device that transports many types of car bodies with different shapes and sizes on a common line, and positions and fixes the car bodies at a predetermined work position at the transport stop position, multiple positioning systems that position and fix multiple parts of the car body, respectively. A large number of members are provided according to the various positioning parts of the vehicle body, and the large number of positioning members provided for each of the plurality of parts are arranged as a group for each part, and in each group, the positioning members are Each type is divided into blocks, each block is supported by a support member, the support members are arranged in the transport direction of the vehicle body, and each group is attached to the base member, and each support member is positioned according to the type of vehicle body. A vehicle body positioning device comprising a drive means for moving a base member forward and backward in the conveyance direction of the vehicle body.