JPS59137135A - Finger for conveying work of transfer press - Google Patents

Abstract

PURPOSE:To improve stability and reliability in the stage of conveying a work by providing a work gripper function to a titled finger of a transfer system on a horizontal plane, and controlling the opening and closing of the pawl thereof in accordance with the movement of a transfer bar. CONSTITUTION:When a transfer bar 1a moves in a direction x1, the bar comes into sliding contact with a slide pin 8 disposed perpendicularly to a finger body 2 and the surface of the inclined cam of a drive cam 11 provided in a part of a press machine. Then the pin 8 moves upward against the force of a coil spring 10 and a pinion 12 rotates clockwise, thus opening a gripper pawl 13 with respect to a holder 7. The bar 1a moves further in the direction x1 and the end part of the panel work W on a die 3 is held in place between the holder 7 and the pawl 13. When the pin 8 rides over the cam 11 thereafter, the pin 8 moves downward and therefore the pawl 13 is closed and the work W is gripped between the holder 7 and the pawl 13 by the force of the spring 10. The bar 1a moves in the direction intersecting orthogonally with x1 and the pawl 13 opens in the same way as mentioned above the release the work W. The work W is thus conveyed surely to the succeeding stage.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides workpiece conveyance fingers in a transfer press, particularly workpiece gripper functions. The present invention relates to a finger for transporting a workpiece.

As is well known, in a horizontal plane (two-dimensional) transfer type transfer press, the transformer 7 aber (feeder) for transporting the workpiece moves in a two-dimensional horizontal plane every cycle of the press, thereby moving the workpiece in the entire process. For example, a structure shown in FIG. 1 is known as a work transfer finger for such a transfer press.

To outline this, are la and lb paired with each other? No XI r 'Ir r! 2 #'! A two-dimensional motion transfer bar as shown in *, 2 is a stay attached to each of the transfer bars 18゜1b, 3 is a lower die that is partially molded from a press die, and each stay 2 has a A holder 4 as a workpiece holder is attached to the holder 4.

Then, the transformer 7 aber 1a, lb moves to xl, and at the 9th point, the holder 4 moves the panel work on the lower mold 3 w.
Raise the two pieces to support it, and then perform the panel work W? Transport to the next process. Further, the transfer bars 1a and lb perform the action x2 to release the panel work Wi, leaving it on the lower mold 3, and transfer the transfer bar 1a.

1b returns to the initial position again under the action y2.

However, with such conventional workpiece conveying fingers, the mounting position must be determined according to the external shape of the panel workpiece W. Since the structure is such that the panel work W is simply placed on the adjusted holder 4 and transported, the supporting operation of the panel work W and the panel work W itself on the holder f-4 are unstable, and therefore the panel work W
If the material is not supported properly or may fall, it may not be possible to accurately convey it to the next process. First, conventional workpiece transfer fingers lack reliability during workpiece transfer, resulting in stable processing.

The problem is that production cannot be expected.

In view of the above-mentioned points, the present invention aims to improve the stability and reliability especially when transporting a workpiece. In order to achieve this purpose, the present invention is equipped with an opening/closing work gripper function on the fingers, and also holds and releases panel work by opening/closing the gripper claws based on the movement of the transfer bar. The feature is that the movement is controlled so that the panel work is clamped by the fingers with a constant holding force during transportation.

Below are examples of this invention? This will be explained in detail based on the drawings.

FIGS. 2, 3, and 4 show all the embodiments of this invention, where la is "I e )'1 +
Two-dimensional horizontal motion under the action X2 r'/l? Transfer bar 2 is transfer bar 1a.
A pair of stays as a body of fingers fixed to 6
7 is a bracket suspended horizontally between both stays 2, and 7 is a pair of angled halters attached to the tips of the stays 2.
It is. A vertically movable slide bin 8 is mounted between the legs 6a of the bracket 6 in a vertical position.
A rack portion 9 is carved into this null drive/8, and the rack portion 9 is always biased downwardly and uniformly by a coil gene 10. As will be described later, the lower end surface of the slide bin 8 is connected to the first drive cam 11 provided on the lower mold 3.
The entire slide bin 8 moves upward by slidingly contacting the slide bin 8. Further, a pinion 12 is rotatably supported between the legs 6a of the bracket 6.

This pinion 12 meshes with the rank portion 9 of the slide bin 8, and is integrally attached to the outer periphery of the pinion 12 with grits (-nails 11) bent in a substantially doglegged shape. The tip of the gripper claw 13 extends below the holder 7 as shown in FIG. It opens with respect to the halter 7 by rotating, and closes with respect to the halter 7 by rotating the pinion 12 counterclockwise when the slide pin 8 moves downward.

Here, the action of the finger according to the above configuration will be explained.

First, from the state shown in Fig. 5(A), the transformer 7 aber 1a is
Since the slide bin 8 and the drive cam 11 are separated from each other at this time, the slide bin 8 is in a downward movement state, and the gripper moves in one direction. -Claw 13 is closed. Then, when the transfer bar 1a moves in the Xl direction, the fifth
As shown in Figure 1 (Bl) and Figure 3, the lower end surface of the slide bin 8 comes into sliding contact with the inclined cam surface of the drive cam 11, and the slide bin 8 overcomes the force of the coil spring 10 and moves. By rotating the upward movement rotation pinion 12 in the clockwise direction, the gripper claws 13 are opened relative to the holder 7.
By roughly moving X10,000, the end of the panel work W on the lower mold 3 is gripped between the holder 7 and the gripper claw 13, and then as shown in Fig. 5(C). Slide bin 8 is drive cam 11? By climbing over the slide bin 8, the slide bin 8 returns to the downward movement state. As a result, the gripper claw 13 closes against the holder 7, so that the force of the coil spring 10? Hold and clamp the panel work wl using the halter 7 and the green bar claw 13.

Next, transfer the transfer bar 18 from the state shown in FIG. 5 (C1).
is moved in the direction perpendicular to the plane of the paper, that is, as shown in FIG. 18 moves y10,000 times to reach the next process, the slide bin 8 is moved to the second drive cam 21 in the next process as shown in ) in FIG.
The slide bin 8 moves upward again due to the sliding contact between the lower end surfaces of the slide bin 8, and the holder 7 and the gripper claws 13 open to release the panel work w2 and set the panel work w2 in the next process.

When the setting of the panel work W is completed in this way, the transfer bar 1a moves from the state shown in FIG. The V floor that passed over the drive cam 21'
The gripper claws 13 are then closed again. Then, the transfer bar 1ai"i: from the state shown in Fig. 5 (E), the transfer bar 1f) moves in the direction X2 of Fig. 5 (F) and returns to the initial position, and the above operation is completed as one cycle. It becomes repeated.

Therefore, during transportation, the panel work W is clamped by the halter 7 and the gripper claws 3, so that it will not shift or fall, and the panel work W will be reliably transported to the next process. be done.

Other embodiments of the invention are shown in FIGS. 6, 7 and 8. In this embodiment, as the opening/closing mechanism for the grisover claw 13, a link type is used instead of the rack and binion type described above. Ding, leg 6
A gripper with a set of hinge levers rotatably supported on a.
Hinge bin 1 is attached to the upper end of the claw 13Ai and the slide pin 8A.
4, and the gripper claws 13Ai are opened and closed by the vertical movement of the slide bin 8A, and the other structure is the same as that of the previous embodiment. In the case of this embodiment as well, exactly the same effects as in the previous embodiment can be obtained.

As is clear from the above description, according to the present invention, the holding and opening operations of the panel work by opening and closing the gripper claws are controlled based on the movement of the transformer 7 aber, thereby holding the panel work with a constant holding force. Because the structure is such that the panel work is transported while moving, the panel work can be reliably transported to the predetermined position without causing the panel work to shift or fall and fc. This has the effect that stable processing can be performed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part showing the structure of a conventional workpiece conveying finger, FIG. 2 is a plan view of only one side of the workpiece conveying finger as an embodiment of the present invention, and FIG.
Figure 4 is a front view of the figure, Figure 4 is a view in the Q direction of Figure 3, Figure 5 is a
A) (B) (Q (Dl (E) (Fl is an explanatory diagram for explaining the operating states of Fig. 2, Fig. 3, and Fig. 4, respectively. Fig. 6 shows another embodiment of the present invention. 7 is a front view of FIG. 6, and FIG. 8 is a view taken in the direction of arrow P in FIG. 7. la, lb...Transfer bar, 2.・Stay
(Finger body), 3... Press mold, 7... Holder, 8.8A... Slide pin, 10... Coil spring (elastic body), 11... First drive cam, 13
, 13A...Gripper claw, 21...Second drive cam, W...Panel work.

Claims (1)

[Claims] (1) A transformer 7 bar that performs a predetermined transfer movement in synchronization with the movement of the press machine, a drive cam provided in a part of the press machine, and a holder attached to the transfer bar and attached to the tip. a tenal finger main body; a slide pin that is arranged perpendicularly to the finger main body and moves up and down based on the movement of the transformer 7 aber with its lower end surface slidingly contacting the drive cam; and the slide A gripper claw opens and closes the vertical excitation f'r of the pin to grip the panel work between the gripper claw and an elastic body for imparting a gripping force to the panel work to the gripper claw. Transfer press workpiece conveying fingers characterized by a clean structure.