JPH0744476Y2 - Goods transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an article transfer device for holding and transferring automobile parts such as a knuckle arm.

(Prior Art) As a transfer device for transferring automobile parts such as a knuckle arm in which a plurality of arm parts are extended around an annular part in an assembly process or the like, conventionally, it is attached to a transfer machine body. Inserting a pair of holding arms into the inner hole of the annular portion, and clamping the work while centering the work by operating these holding arms in the direction of opening each other,
It is known that they are reprinted. In this conventional device, for example, when a knuckle arm is transferred, there is a partition wall for partitioning the bearing support parts on both sides inside the annular part on the work side. The projection provided on the tip of the holding arm is hooked and engaged to chuck. Further, in the case of a knuckle arm having a partition wall in the middle portion, such a conventional transfer device could reliably hold the work without increasing the clamping force of the holding arm so much.

By the way, in the case of a work such as a conventional knuckle arm that has a partition wall in the middle of the inner side of the annular portion, there is no problem in the above conventional device, but if you want to handle a work that does not have a partition wall, etc. However, there is a problem in that the holding arm as described above does not hold it sufficiently. When such a work is held and transferred by a conventional device,
Since a large clamping force is required for chucking the work, the size of the apparatus becomes large, and at the time of chucking, the inner portion of the annular portion is easily damaged.

(Purpose of the Invention) The present invention has been made in view of the above-mentioned problems, and the work can be reliably held by a simple device without being restricted by the shape of the hole of the work. An object is to provide an article transfer device.

(Structure of the Invention) In order to achieve the above object, an article transfer apparatus according to the present invention is an article transfer apparatus including a transfer machine main body and an article holding member provided in the transfer machine main body. The article holding member includes a pair of open / close arms inserted into the hole of the article and a plurality of hook arms approaching from outside so as to support the lower part of the article in conjunction with the opening operation of the open / close arms. And

(Operation) When the pair of open / close arms of the article holding member provided in the transfer machine body are inserted into the hole portions of the article and the opening operation is performed, the inner peripheral surface of the hole portion of the work is centered by the outer surface of each open / close arm. It At the same time, the hook arm approaches from the outside in conjunction with the opening operation of the opening / closing arm, and the lower part of the article is supported by the hook arm. In this way, since the work is held by both the opening / closing arm and the hook arm, the work can be reliably held even if the chucking force is weak.

(Example) Hereinafter, an example will be described with reference to the drawings.

FIG. 1 is a structural view of the essential parts of an article transfer device according to an embodiment of the present invention, and FIG. 2 is a view taken in the direction of arrow A in FIG.

In this embodiment, a guide rod 3 is horizontally supported on a machine frame 2 of a transfer machine body 1.
, A pair of sliders 4, 4 are provided slidably spaced from each other. These sliders 4 and 4 are connected to a cylinder 6 via a link mechanism 5, and when the cylinder 6 moves back and forth in the horizontal direction in FIG.
The sliders 4, 4 are configured to contact and separate in the left-right direction in FIG. 1 via the link mechanism 5.

On the other hand, below the transfer machine body 1, a pair of open / close arms 7,7
And an article holding member 9 consisting of a pair of hook arms 8 and 8 provided at the outer positions of the open / close arms 7 and 7, respectively.

Each of the opening / closing arms 7 and 7 is a member having a substantially L-shaped cross section, which is composed of vertical portions 7a and 7a and horizontal portions 7b and 7b that extend outward from the upper end thereof, and the horizontal portions 7b and 7b are the above-mentioned members. Slider 4,4
It is fixed to the bottom of the
The open / close arms 7 and 7 are adapted to be brought into contact with and separated from each other in accordance with the contacting and separating operation of

The hook arms 8 and 8 are provided at the outer positions of the open / close arms 7 and 7 so as to face the open / close arms 7 and 7, and the lower half portion is bent inward toward the inside to form an upper end. The part is pivotally supported on the ends of the horizontal parts 7b, 7b of the opening / closing arms 7,7. One end of a tension spring 11,11 is attached to the back surface of the hook arm 8,8 via a mounting seat 10,10, and the other end of the tension spring 11,11 is attached to the transfer machine body 1. It is attached to the brackets 12 and 12 projecting downward at the outer end of the machine frame 2, and the hook arms are attached by the tension springs 11 and 11.
The lower ends of 8, 8 are always urged toward the retracted position away from the open / close arms 7, 7. Further, a plurality of hook arms 8 and 8 are provided at the lower end portions thereof in accordance with the shape of the knuckle arm 13 which is a work to be transferred (in the illustrated embodiment, two on the left side and the right side in FIG. 1). 1) holding claws 8a, 8a are provided, and these holding claws 8a, 8a are used for the knuckle arm 1
The outer lower end of the annular portion 13a of 3 is held.

On the other hand, stoppers 14 and 14 are fixed via bolts to the rear positions of the hook arms 8 and 8 at the lower end of the machine casing 2.
The lower part of the stopper 14, 14 on the side of the hook arm 8, 8 has an inclined contact surface 1 against which the upper rear surface of the hook arm 8, 8 abuts.
4a and 14a are formed.

In the above configuration, when the knuckle arm 13 is transferred, first, the transfer machine body 1 is moved above the knuckle arm 13 so that the opening / closing arms 7 and 7 are located inside the annular portion 13a of the knuckle arm 13. Lower so that it is inserted into. At this time, the open / close arms 7 and 7 and the hook arms 8 and 8 are in the positions shown by imaginary lines in FIG.

Next, when the cylinder 6 is moved forward, the sliders 4, 4 move in the direction in which they are separated from each other via the link mechanism 5, and the opening / closing arms 7, 7 fixed to the sliders 4, 4 also move in the same direction. These open / close arms 7 and 7 contact the inner surface of the annular portion 13a. By this contact, the knuckle arm 13 is centered.

As the sliders 4 and 4 move, the hook arms 8 and 8
Although the hook arms 8 and 8 are also moved, the back upper portions of the hook arms 8 and 8 come into contact with the contact surfaces 14a and 14a of the stoppers 14 and 14 to prevent the movement thereof, so that the tension of the tension springs 11 and 11 is prevented. Rotate inward. Then, the outer lower end of the annular portion 13a of the knuckle arm 13 is held by the holding claws 8a (solid line position in FIG. 1).

After the knuckle arm 13 is centered and held by the opening / closing arms 7 and 7 and the hook arms 8 and 8 at the annular portion 13a as described above, the transfer machine body 1 is moved to a target position by a moving mechanism (not shown). After that, the cylinder 6 is moved backward to release the holding of the knuckle arm 13 by the operation opposite to the above, and the transfer is completed.

(Effects of the Invention) Since the present invention is configured as described above, the knuckle arm can be reliably held by a simple device without being restricted by the shape of the hole of the work.

[Brief description of drawings]

FIG. 1 is a structural view of the essential parts of an article transfer device according to an embodiment of the present invention, and FIG. 2 is a view taken in the direction of arrow A in FIG. 1: Transfer machine main body, 7: Opening / closing arm, 8: Hook arm, 9: Article holding member, 13: Knuckle arm.

Claims (1)

[Scope of utility model registration request] 1. An article transfer device comprising a transfer machine main body and an article holding member provided on the transfer machine main body, wherein the article holding member includes a pair of opening / closing arms inserted into the holes of the article. An article transfer device, comprising: a plurality of hook arms approaching from outside so as to support a lower portion of an article in association with an opening operation of the opening / closing arm.