JPH022679B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a work reversing device with manual clamping/unclamping means, which is used by being placed between presses in a production line in which presses are arranged in series.

Conventionally, a work reversing device used in a press line has a bracket fixed to a rotating shaft.
A pair of workpiece holding members is provided, and the rotating shaft is reciprocated 180 degrees to reverse the workpiece holding member, and the workpiece holding member is connected to a cam fixed to the machine body via a link mechanism, and the workpiece is held using rotation. The members were opened and closed, that is, brought closer or further apart from each other. However, when adjusting the workpiece holding member to properly hold the workpiece in the closed position, the rotating shaft must be rotated and returned, and when the rotating shaft is turned, the workpiece holding member also rotates. The drawback was that adjustment was extremely difficult and required a lot of man-hours. In another workpiece reversing device, a pair of workpiece holding members are provided on a bracket fixed to the rotating shaft, and the rotating shaft is rotated.
A drive mechanism that reciprocates 180 degrees and an air cylinder that opens and closes the workpiece holding member are provided, and adjustments are made by inching the air cylinder.
Although this device has the advantage of being able to make adjustments without rotating it, it has the disadvantage that the inching operation of the air cylinder is complicated and adjustment is difficult.

The object of the present invention is to eliminate these drawbacks and provide a workpiece with manual clamping/unclamping means that allows adjustment without rotating the workpiece holding member, and allows position adjustment by manually opening and closing the workpiece holding member, making adjustment extremely easy. The object of the present invention is to provide a reversing device. Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the arrangement of a work reversing device 1 in a press line. A plurality of presses 2 are arranged in a row, and a transfer unit 3 is provided at the end of the row. A feed bar 4 connected to and driven by the transfer unit 3 is provided with fingers 5 at required positions, and the fingers 5 move the material or processed product (hereinafter referred to as the work) from the press 2 to the receiver at an intermediate position according to the arrow A. In the position shown in the figure, the table is placed on the receiving plate 6 of the work reversing device 1,
They are sequentially conveyed from the receiving plate 6 to the press 2. It is assumed that between the presses 2 and 2 shown in the figure, it is necessary to invert the workpiece and press it.

In FIGS. 2, 3, and 4, a three-sided view of the work reversing device 1 is shown. One end of a rotating shaft 8 rotatably supported by the body 7 is connected to a rotary actuator 10 via a coupling ring 9. The rotary actuator 10 provides a reciprocating rotational movement of 180 degrees to the rotary shaft 8 by supplying compressed air. A bracket 11, which is I-shaped when viewed from the front, is fixed to the other end of the rotating shaft 8. Guide rods 12, 12 are provided on both sides of the bracket 11, and are slidably guided by the guide rods 12, and a pair of workpiece holding members 13 facing each other are protruded and held on the opposite side of the rotary actuator 10. ing. The pair of workpiece holding members 13 are connected by a link 15 to an arm member 14 that is rotatably held on the rotating shaft 8, and can be opened and closed by moving toward or away from each other. Bracket 1
Groove cam 1 is installed on the rotary actuator 10 side of 1.
6 is rotatably provided on a rotating shaft 8, has a groove on the surface facing the bracket 11, and the opposite surface is in contact with the body 7 and is detachably fixed.
An arm 1 is provided between the bracket 11 and the grooved cam 16.
7 is pivotally mounted on the eccentric portion of the bracket 11.
A cam follower 18 is rotatably provided at one end of the arm 17 and fits into the groove of the grooved cam 16.
The other elongated end of the arm 17 is connected to one of the workpiece holding members 13 by a link 19.
The groove of the grooved cam 16 is provided while the bracket 11 rotates 180 degrees with the cam follower 18 engaged, and has a small radius at both ends and a large radius at the middle.

In Fig. 2, Fig. 4, and Fig. 5, the grooved cam 1
A structure in which the fuselage 6 and the fuselage 7 are removably fixed will be described. Grooved cam 16 and body 7 are provided with notches 20 at two locations, and a bolt 21 that can be inserted into the position where the notches 20 are aligned, and a lever 22 that is screwed into the threaded portion of bolt 21 are provided. Groove cam 1
A handle 23 for rotating the grooved cam 16 around the rotating shaft 8 is provided on the outer circumference of the grooved cam 6 .

In FIG. 2, FIG. 4, and FIG. 6, the rotating shaft 8
A damper device that stops and positions the rotary shaft 8 while damping it at the end of the rotation when the rotary actuator 10 gives the rotary actuator 10 a reciprocating rotation of 180 degrees will be described. One stopper 24 is fixed to the rotating shaft 8, and the stopper 24 is fixed to the fuselage 7.
When 4 rotates, 2 is placed in the position to receive its tip.
dampers 25 are provided.

Next, we will discuss the effect. In FIGS. 1 to 5, FIG. 2 shows the workpiece reversing device 1 whose operation has been stopped, and the workpiece holding members 13 are opened vertically and separated from each other. A guide pin 27 for positioning the workpiece 26 on the receiving plate 6 is attached to the receiving plate 6 attached to the workpiece holding member 13. In this state, the receiving plate 6 serves as an intermediate pedestal (idle stage) between the presses 2, 2, and receives the workpiece 26 conveyed by the finger 5 of the feed bar 4. When compressed air is supplied to and discharged from the rotary actuator 10, the rotating shaft 8 rotates 180 degrees, and the workpiece holding member 13 is reversed together with the bracket 11.
During this time, the cam follower 18 guided by the groove of the grooved cam 16 is guided from the small diameter part of the groove to the large diameter part during the first rotation of approximately 20 degrees, and holds one workpiece holding member 13 via the arm 17 and the link 19. Drive. At the same time, drive the other workpiece holding member 13 via the arm member 14 and link 15 to move both workpiece holding members 13 from the open position to the closed position,
The workpiece 26 is held between the guide pins 27 and the like of both receiving plates 6. During the final rotation of approximately 20 degrees, the workpiece holding member 13 is returned from the closed position to the open position in the opposite manner as described above, and the workpiece 26 is placed upside down on the lower receiving plate 6.
hold.

The workpiece 26 that has been inverted by the finger 5 of the feed bar 4 is carried out, the next workpiece 26 is carried in, and the above-mentioned process is repeated.

Now, if you want to adjust the height of the guide pin 27 that holds the workpiece 26, loosen the lever 22 to remove the bolt 21 that fixes the grooved cam 16 to the machine body 7, and then turn the grooved cam 16 manually using the handle 23. For example, since the workpiece holding members 13, 13 can be opened and closed without operating the rotary actuator 10, that is, with the rotating shaft 8 kept stopped, adjustment work can be performed extremely easily. When the adjustment work is completed, the notch 20 of the grooved cam 16 and the notch 20 of the body 7 are aligned, and the bolt 21 is inserted and tightened with the lever 22 to fix the grooved cam 16 to the body 7.

As is clear from the above description, according to the present invention, the workpiece holding member can be opened and closed by rotating the grooved cam without rotating the rotary shaft, that is, without applying any rotation to the workpiece holding member, so adjustment is extremely easy. . Since the workpiece holding member can be adjusted manually, the workpiece holding member can be opened and closed without any force, so there is no risk of damage due to collision. Furthermore, since the rotary shaft can be rotated to any desired position while manually rotating the grooved cam, the posture of the workpiece holding member can be changed and adjusted. The practical effects and advantages are extremely large.

[Brief explanation of drawings]

Fig. 1 is a plan view of the main parts of the press line showing the arrangement of the embodiment, Fig. 2 is a partially sectional side view of the embodiment,
3 is a front view, FIG. 4 is a plan view of a main part in section, FIG. 5 is a cross-sectional view taken from FIG. 2, and FIG. 6 is a cross-sectional view taken from FIG. 2. 1 is a work reversing device, 2 is a press, 3 is a transfer unit, 4 is a feed bar, 5 is a finger, 6 is a receiving plate, 7 is a machine body, 8 is a rotating shaft, 9 is a coupling, 10 is a rotary actuator, 11
12 is a bracket, 12 is a guide rod, 13 is a workpiece holding member, 14 is an arm member, 15 is a link, 16
is a groove cam, 17 is an arm, 18 is a cam follower,
19 is a link, 20 is a notch, 21 is a bolt, 2
2 is a lever, 23 is a handle, 24 is a stopper, 25
26 is a damper, 26 is a workpiece, and 27 is a guide pin.

Claims (1)

[Scope of Claims] 1. A rotating shaft 8 rotatably supported horizontally on the aircraft body, a rotating means for rotating the rotating shaft 8 by 180° forward or backward, and a rotating shaft fixed to one end of the rotating shaft 8. A bracket 1 is installed and has an I-shaped front view in the axial direction at the stop position of the rotating shaft 8.
1, a pair of guide rods 12 provided on both sides of the I-shaped bracket 11 facing upward and downward, and the pair of guide rods 12 facing each other so as to be slidable on the guide rods 12, and fixedly attached to the ends of the 8 rotating shafts. A workpiece holding member 13 is connected to mutually opposite ends of the arm members 14 by links 15, and a rotating shaft 8 is rotatably passed through the workpiece holding member 13, which is locked or rotatably fixed to the machine body and faces the bracket 11. A grooved cam 16 having a substantially semicircular groove centered around the rotating shaft 8 on its surface, with a large diameter groove at the middle portion and a small diameter groove at both ends.
The I-shaped bracket 11 is rotatably provided at a position slightly eccentric from the center in the left-right direction, and one end of the cam follower 18 is engaged with the groove cam 16, and the other end is connected to one of the workpiece holding members 13 with a link 19. A manual clamping/unclamping means characterized by comprising: an arm 17 which is connected to each other and moves a pair of workpiece clamping members 13 between each other, into a closed state, and into an open state as the rotating shaft 8 rotates through 180 degrees. Comes with a workpiece reversing device.