JPH0585618A - Conveyor apparatus - Google Patents

Abstract

PURPOSE:To provide a positioning pin for a loaded article so as not to lower the working efficiency for the loaded article. CONSTITUTION:The conveyor apparatus comprises a hanger frame H2 which is freely movable along a specified path and which is equipped with an article placement section C, and a positioning pin P2 which is fitted, from below, to a portion located under a loaded article B and spaced from the article placement section C. The hanger frame H2 is mounted thereto with a pin holding portion 3 in a manner that the portion 3 is movably adjustable in the direction of lateral width, or back-and-forth width, of the frame, a pin P2 being mounted to a tip end portion of the pin holding portion 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention fits a hanger frame, which is movable along a predetermined path and has an article placing portion, from below to a bottom portion of an article to be loaded and a portion detached from the article placing portion. The present invention relates to a conveyor device provided with a positioning pin.

[0002]

2. Description of the Related Art A conveyor device of this type is used, for example, to convey a vehicle body in an automobile assembly line.
Then, for example, in the case of a vehicle body, it may be necessary to provide a plurality of positioning pins at different positions in the lateral width or the front-rear width direction of the hanger frame in accordance with the difference in the mounted article, such as the difference in the vehicle type. In such a case, conventionally, as shown in FIG. 12, the rotation axis L of the pin holding portion 3 ′ attached to the article placing portion C ′ in a cantilevered manner so as to be rotationally adjustable. A plurality of (two in the example shown) pins P2 'are attached at different positions in the longitudinal direction of the'and at different positions in the circumferential direction of the pin holding portion 3'to satisfy the above-mentioned demand. It was

[0003]

According to the above-mentioned prior art, even when using a pin located near the article placing portion, the pin holding portion is unnecessarily largely protruded from the pin, There is a possibility that the projecting portion interferes with the work of processing the mounted article near that portion, for example, when the mounted article is a vehicle body, the work such as painting and bolting may be hindered. An object of the present invention is to eliminate the above-mentioned conventional drawbacks.

[0004]

In order to achieve this object, the conveyor device according to the present invention is characterized in that a pin holding portion is attached to the hanger frame so as to be movable and adjustable in the lateral width or the front-rear width direction thereof. The front and rear pins are attached to the tips of the pin holding portions.

[0005]

By adjusting the movement of the pin holding portion, the position of the pin at the tip of the pin holding portion is changed according to the difference of the mounted article.

[0006]

Therefore, even if the position of the pin is changed according to the difference of the mounted article, the pin holding portion does not unnecessarily project from the pin, so that the workability for the mounted article can be improved. It was

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example in which the conveyor device of the present invention is used in an automobile assembly line will be described below with reference to the drawings. As shown in FIG. 11, the automobile assembly line includes a main line L1 used for a pretreatment process such as painting of the vehicle body B and an inspection process at the final stage of assembly, and a subline for assembling the engine and the underbody parts to the vehicle body B. L2, a relay line L3 for relaying the main line L1 and the sub line L2, and the like.
As shown in FIG. 6, the main line L1 is of a so-called overhead type in which a vehicle body B is mounted on a hanger frame H that is movable along a predetermined path and that has a pair of left and right article mounting portions C and is conveyed. A conveyor device is provided, and the vehicle body B is conveyed by this conveyor device in the order of work steps. The sub-line L2 is provided with a placement type conveyor device that conveys a jig pallet P that is movably placed along a predetermined path in the order of work steps and sequentially positions and loads an engine, suspension components, and the like. B is conveyed onto the jig pallet P by an overhead type conveyor device, and after positioning the vehicle body B and the jig pallet P, the engine, the suspension parts and the like are assembled to the vehicle body B. After that, the vehicle body B is conveyed again to the main line L1 via the relay line L3, and enters the final inspection step of assembling.

As shown in FIG. 6, the overhead type conveyor device includes a vertically elongated guide rail L, a traveling device A traveling along the guide rail L, and a hanger frame H.
Are connected in a suspended state, and the vehicle body B is placed between a pair of left and right article placing parts C. As shown in FIG. 7, the traveling device A has a drive wheel W1 and idle wheels W2 traveling on the guide rail L on the horizontal frame F1.
Are attached to the front and the rear, and an electric motor M for driving the drive wheels W1 is provided, and the vertical frame F2 hanging from the front and rear ends of the horizontal frame F1 is provided with the pinch roller R1 for preventing the lateral movement of the traveling device A. Configured. Further, a power supply rail unit including a power supply line and a control signal line for the electric motor M is attached to the side wall surface of the guide rail L, and the vertical frame F2 is slidably in contact with the power supply line and the control signal line. The pendulum BL is attached. The hanger frame H is the vertical frame F2.
A pair of front and rear horizontal frames H1 are suspended from an arm F3 that extends along the front and rear of the lower end of the pair, and a pair of left and right vertical frames H2 are swingably attached to both ends of the horizontal frame H1. As shown in FIG. 4, the left and right article placing parts C are attached to the lower end portions of the pair of left and right vertical frames H2 in a projecting attitude in directions facing each other. In each of C, the article placing plates 1 extending in the front and rear are provided by being attached to the support frames (2) provided at the front and rear ends of the vertical frame H2. Positioning pins P2 are fitted to the front end portions of the pair of left and right article placing portions C of the hanger frame H, which are fitted from below to the bottom portion of the vehicle body B which is the article to be placed and which is separated from the article placing portion C.
Is provided, and is fitted to a hanger positioning pin P1 provided on the floor of the work station so as to be able to move up and down at a position corresponding to the bottom of the article placing portion C and the front lower end of the vertical frame H2. A fitting hole h1 is formed. That is, it is possible to accurately position the vehicle body B, which is positioned and mounted on the article placement portion C, with respect to the work station.

The positioning pin P2 is attached to the tip of the pin holding portion 3 attached to the article placing portion C so as to be movable and adjustable in the lateral width direction of the hanger frame H. As shown in FIGS. 8 to 10, the pin holding portion 3 is a flat plate-shaped member having a through hole h3 that penetrates a sliding pin P3 described later in the center. The two support members 4 provided inside the support frame 2 are provided with two guide rails 5 arranged in parallel along the lateral width direction of the hanger frame H, and each of the guide rails 5 is provided with a guided member 6. Is slidably fitted, and the pin holding portion 3 is attached to a pair of guided members 6. A rectangular guide in which the operation pin 7 penetrates the lower part of the sliding pin P3 that is vertically movable through the through hole h3 in an orthogonal posture, and the operation pin 7 penetrates under the support member 4. A guide member 8 having a hole h4 is attached. A push-down member 9 for pushing down the slide pin P3 is provided on the upper surface of the support frame 2, and when the slide pin P3 descends, the push-down member 9 is fitted to the lower end of the slide pin P3 to move the slide pin P3. Two lock fitting holes h5 for blocking are formed in the lock member 10 at intervals in the direction along the guide rail 5, and the lock member 10 is bolted to the bottom portion of the support frame 2. is there. The lock member 10 is formed with a positioning fitting hole h1 that fits into the hanger frame positioning pin P1.

Therefore, by moving the sliding pin P3 in the vertical direction and in the lateral width direction of the hanger frame H, the pin holding portion 3 can be moved and adjusted by replacing it with the two locking fitting holes h5. . As shown in FIGS. 1 to 5, an operation station for operating the sliding pin P3 to change the position of the positioning pin P2 is provided at an appropriate position on the main line L1. More specifically, as shown in FIG. 4, a hanger frame positioning pin P1 is configured to be vertically movable by an air cylinder C1 so as to be fitted into the positioning fitting hole h1. As shown in FIG. 5, a supporting member 11 having a U-shape in cross section which engages with the rollers R attached to both ends of the operation pin 7 from below is configured to be vertically movable by the first air cylinder C2. In addition, the second air cylinder C3 is configured to be movable in the lateral width direction of the hanger frame H. Then, as shown in FIG. 1, the support member 11 is lifted by the first air cylinder C2 to unlock the sliding pin P3, and as shown in FIG. 2, the second air cylinder C3 is used. The position of the pin P2 attached to the pin holding portion 3 is adjusted by moving the operation pin 7, that is, the sliding pin P3.
Further, the support frame 12 is provided with a push-in member 13 for pushing the push-down member 9 downward from above so that it can be moved up and down by an air cylinder C4. As shown in FIG. After the movement of the pin P3, the sliding pin P3 is locked again. Another embodiment will be described below. The position of the positioning pin P2 may be changed to three or more positions. The position of the positioning pin P2 may be changed in the front-rear width direction of the hanger frame H. The specific configuration of the hanger frame H can be variously changed, and the specific configuration of the pin holding portion 3 can be variously changed accordingly.

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

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a sliding pin operation station.

FIG. 2 is a front view showing a main part of a sliding pin operation station.

FIG. 3 is a front view showing a main part of a sliding pin operation station.

FIG. 4 is a front view of a sliding pin operation station.

FIG. 5 is a side view showing a main part of a sliding pin operation station.

FIG. 6 is an overall front view of the conveyor device.

FIG. 7 is a side view of the traveling device.

FIG. 8 is a cutaway front view of the article placing portion.

FIG. 9 is a cutaway side view of the article placing portion.

FIG. 10 is a cutaway plan view of the article placing portion.

FIG. 11 is a schematic configuration diagram of an assembly line.

FIG. 12 is a front view showing a conventional technique.

[Explanation of symbols]

 3 pin holding part C article loading part H hanger frame P2 pin

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B65G 47/88 D 8010-3F B66C 1/28 A 8922-3F

Claims (1)

[Claims] 1. A hanger frame (H), which is movable along a predetermined path and has an article placement section (C), is detached from the article placement section (C) at the bottom of the loaded article (B). A conveyor device provided with a positioning pin (P2) fitted to a portion from below, wherein the hanger frame (H) can be moved and adjusted in a lateral width or a front-rear width direction of the hanger frame (H). Is installed,
A conveyor device in which the pin (P2) is attached to the tip of the pin holding portion (3).