JPS61131880A - Carrying arm - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention 1] The present invention relates to a conveyance arm used in a conveyor belt for holding and conveying articles.

[Technical Background of the Invention] For example, in a press operation, a conveyance device is used to convey and supply press materials one by one to a press machine. FIG. 4 is a schematic configuration diagram showing the conveying device. In the figure, 1 is a press machine, 2 is a material mounting table, 3 is a press material, and 4 is a transfer arm having a holder 5.
The transport arm 4 is moved vertically and horizontally by a drive device (not shown), and is configured to transport the pressing material 3 on the material mounting table 2 onto the lower mold 1a of the pre-mowing 1. The transport arm 4 in Fig. 4 is shown in Fig. 5.
In the figure, the same figure (a > is a perspective view, the same figure (b) is the same figure (a'
) is a cross-sectional view of FIG. In the figure, an arm 6 made of a rigid body is fixed at two locations in the longitudinal direction of the transfer arm 4 at an intermediate portion thereof. A long hole 7 is formed near both ends of the arm 6 along the longitudinal direction of the arm 6, and a bushing 8 with a 7 flange is movably moved along the long hole 7 as shown in FIG.
), and the nut 9 is screwed into the male thread 8a formed on the bushing 8 at two appropriate positions to fix it. The bush 8 has a suction cup 10 which is a holder at the tip.
The hollow shaft 11 with
It is regulated by υJ. In addition, 13 in the figure is a spring, which always pushes the hollow shaft 11 having the suction cup 10 downward.
Further, the hollow shaft 11 is connected to a vacuum pump (not shown) via a pipe 14.

[Background Art Problem 1] Now, in FIG. 5, the reason why the hollow shaft 11 having the suction cup 10 is held slidably in the vertical direction with respect to the arm 6 is as follows. That is, generally adsorption 5111
The transfer arm 4 is set so that the suction cup 10 moves down a little further after contact with the material 3, so that the suction cup 10 presses and suctions the press material (article) 3. This is to absorb the downward movement of the transfer arm 4 after contact with the transfer arm 4 by the relative upward movement of the hollow shaft 11 with respect to the transfer arm 4, and for the same reason, it is possible to set the amount of descent of the transfer arm 4 roughly to some extent. This is to make it possible. In addition, especially in the example explained earlier, four suction cups 10
If the lower surface (suction surface) of the 4IIN suction cup is not on the same plane, or the lower surface of the 4IIN suction cup is adjusted so that it is on the same plane, but the suction surface of the material 3 to be suctioned and the suction surface are not the same. This is to ensure that the material 3 can be held even when the parallelism with the lower surface of the board 10 is not achieved. In other words, as the conveyance arm 4 descends, the suction @Iwa-1 comes into contact with the material 3 one after another.
0 is configured so that it can move upward relative to the transport arm 4 against the spring 13 by the amount by which the transport arm 4 descends thereafter, so that it ultimately becomes 8 suction 1.
This is because each lower surface of the material 3 follows the adsorbed surface of the material 3.

However, according to the above configuration, in addition to a complicated mechanism in which the hollow shaft 11 is slidably provided on the arm 6,
There were many parts, which was a factor preventing weight reduction and lower prices.

[Object of the Invention] The present invention was made in order to eliminate the drawbacks of the above-mentioned background art, and an object of the present invention is to provide a transport arm that can securely hold an article while having a simple configuration. shall be.

[Structure of the Invention] In order to achieve the above object, the present invention is such that a floor holder for deeply holding an article is attached to a conveying arm via an elastic arm.

[Embodiment 1 of the invention An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1(a) is a perspective view of the transfer arm, and FIG. 1(11) is a sectional view taken along line II in FIG. 1(a). In the figure, an arm 1G having elasticity such as synthetic material (4-glue) is fixed at two locations in the longitudinal direction of the m-feeding arm 15 at its intermediate portion. A long hole 17 is formed along the long hole 17, and the object is transferred along this long hole 17.
A freely flexible hollow shaft 18 is provided. -fig of this hollow shaft 18
: The suction cup 19 is removed using the holder, and the
! ! V, [empty cylinder] (not shown) is connected to the end through the piping 20.
connected to f. Further, a male thread 18a is formed on the outer periphery of the intermediate portion of the hollow shaft 18, and by interposing the arm 1G therebetween and screwing a nut 21 with two circumferences into the jl [line 18a of the hollow shaft 18, the hollow shaft 18 is It is fixed at an appropriate position of the arm 16.

Next, the operation of the above configuration will be explained. First, before the conveyance operation, after adjusting the position of the suction cup 19 with respect to the arm 16 according to the material 3 to be conveyed by loosening the nut 21,
Fix it in that position. Now, the transport arm 15 is the material 1'!
The four suction cups 19 are positioned above the material 3 and move downward from that position, and in the middle of the lower cutting, the four suction cups 19 come into contact with the material 3 to be suctioned.

The transfer arm 15 moves further downward, but the arm 16 is deflected by the amount of this downward movement, increasing the adhesion between the suction connector and the suction surface of the material 3, and connecting the vacuum pump (not shown) to the hollow shaft 18. As a result, the material 3 is suctioned and held by one suction cup. Thereafter, the conveyance arm 15 moves upward, and the material 3 is conveyed to the press machine by the same operation as the conventional one, and is released on the lower die 1a of the press machine.

In the above embodiment, even if the descending amount of the transport arm 15 is set to be somewhat rough, the lower rib of the transport arm 15 after the suction cup 19 contacts the material 3 is absorbed by the elastic arm 16. There is no need to send 15 pieces of 7'-mu and 3 pieces per serving. Also, the bottom surface of suction cup 11) of tllIiii
Of course, when the parallelism with the target surface of the material 3 is achieved, but even when the parallelism is low, the surface to be attracted of the material 3 is The arm 16 having the suction force 19 is bent by the amount by which the transfer arm 15 descends, and eventually all of the suction cups 19 follow the suction surface of the material F13. to 4
The material 3 can be held securely by the suction cups (q).

Although the above embodiment has been described with four suction cups, as shown in a perspective view in FIG. Secure one end and it! ! Suck on the edge! It is also possible to install tm32. In this embodiment as well, the lower rib portion of the transport arm 30 after the suction cup 32 comes into contact with the suction surface of the material 3 is absorbed by the bending of the elastic arm 31, and the transport arm 30, Prevent damage to material 3.

Further, a third embodiment of the present invention is shown in FIG.

The same figure (a) is a front view showing the state before the suction cup contacts the material, and the same figure (b) is a front view showing the state after contact. In the figure, the transfer arm 4o has two Arms 41 and 42 having elasticity of Hollow shaft 18
It is equipped with a. In this case, since the hollow shaft 18 is held by the two elastic arms 41 and 42, in addition to the effects of the previously described embodiment, the suction cup 19
Even if the arms 41, 42 are bent after coming into contact with the material 3, the principle of parallel links also has the effect that the lower surface (suction surface) of the suction cup 19 can always be kept parallel.

Furthermore, an ffi magnet or the like may be used instead of the suction cup in the above embodiment.

[Effects of the Invention] As explained above in the embodiments, the transport arm according to the present invention can transport articles reliably without damaging the transport arm, etc., even if the descending amount of the transport arm is not set strictly. can be done.

[Brief explanation of drawings]

The first opening shows a transfer arm which is an embodiment of the present invention, FIG. 11(a) is a perspective view, and FIG.
2 is a perspective view showing a second embodiment of the transfer arm according to the present invention, FIG. 3 is a third embodiment of the transfer arm according to the present invention, and FIG. A front view showing the state before contact with the material, (1)) is a front view showing the state after contact, FIG. 4 is a schematic configuration diagram showing the conveying device,
FIG. 5 shows a conventional transfer arm, where <a> is a perspective view and FIG. 5(b) is a sectional view taken at I[-1 in FIG. 4.15.30.4'O...transport arm, 16°31
．． 41.42...Arm, 10,19.32...Suction cup. Patent applicant: Toshiba T+ @ Corporation (α) (b)

Claims (3)

[Claims] (1) A transport arm having a holder for holding an article, wherein the holder is attached to the transport arm via an elastic arm. (2) The transport arm according to claim 1, wherein the elastic arm is made of synthetic resin. (3) The transport arm according to claim 1 or 2, wherein the holder is attached to the transport arm via two parallel elastic arms.