JPH11347659A - Inverting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correct the misalignment of the line transfer caused by the deviation of a working reference point in a working line before and behind an inverting device without introducing any special device. SOLUTION: In an inverting device in which a delivered work 1 is held by a work support member 50 from both sides, the work support member 50 is turned around a horizontal shaft 24, and the work 1 is inverted thereby, a movable pressing member to move the work 1 on the opened work support member 50 after the inversion by a specified distance in the horizontal direction on the work support member 50 is provided to deliver the work 1 after the movement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversing device which is arranged at an intermediate position of a press working line and has a function of reversing a work and moving a position of the work.

[0002]

2. Description of the Related Art In the middle of a transfer press processing line or a processing line composed of a plurality of press machines, a product in the middle of processing may be reversed and transported to the next process due to the necessity of die manufacturing. In such cases, a reversing device is used. And, in the reversing device, for example,
37800, a pair of work support members capable of supporting a work, an opening / closing mechanism for separating and moving the work support members close to each other, and a rotating mechanism for driving the work support members to invert around the inversion axis. Some have.

[0003] When the center position of the die or the press machine in the processing line before and after the reversing device, including the reversing device, is adjusted according to the stroke of the work transfer robot, the entire processing line operates efficiently. . However, if there is a displacement of the press machine in the conveying direction of the line in the processing line before and after the reversing device, the work processing reference point passed from the pre-processing line in the reversing device and the post-processing line should be passed to the post-processing line. A case may occur where the workpiece processing reference point does not match. In addition, in the post-processing line,
In some cases, it is desired to intentionally shift the work processing reference point of the pre-processing line.

In order to correct such a shift of the processing reference point of the work (hereinafter referred to as an offset), an intermediate transfer device consisting of a conveyor or a uni-robot independent of each work transfer robot is provided before and after the reversing device. Or, the structure of all the dies in the post-processing line is modified, or the position of the dies to be attached to the press machine is changed.

[0005]

The above-described method of correcting the offset amount by providing an intermediate transfer device before and after the reversing device can be performed if the control mechanism is complicated and there is not enough room between the press machines. Absent. Further, it is difficult to carry out the method on a transfer press processing line.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and if there is a margin for one stroke of a transfer robot between press machines of a press machine line or between dies of a transfer press, the reversal of the work and the offset amount of the work are performed. An object of the present invention is to provide a reversing device capable of performing correction.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention holds a delivered work from both sides by a work support member and rotates the work support member about a horizontal axis. In a reversing device for reversing a work, a movable pressing member for horizontally moving a work on a work support member opened after the reversal by a predetermined distance on the work support member is provided, and the work is delivered after the movement. The configuration was adopted.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a first embodiment of the reversing device according to the present invention. 1 is a side view of a partial cross section of the entire configuration of the reversing device, FIG. 2 is a front view of a partial cross section for explaining the opening / closing mechanism of FIG. 1, and FIG. 3 is a plan view showing a rotating mechanism of FIG.

As shown in FIGS. 1 to 3, a vertically movable member 1 is supported on a support frame 11 through a pair of housings 12.
Three pairs of rods 14 are provided to be vertically movable.
A piston type shock absorber 15 is fixed between lower ends of these rods 14. Support frame 1
A vertically moving air cylinder 16 as a vertically driving source is attached to an upper portion of the cylinder 1, and a tip of a piston rod 17 of the cylinder 16 is connected to a vertically moving member 13 as shown in FIG. Thus, the vertical moving member 13 can be moved up and down by driving the cylinder 16. Here, the up-down drive mechanism 10 is constituted by the up-down movement member 13 supported by the support frame 11 and the up-down movement air cylinder 16.

A rotary actuator 21 as a reversing drive source is provided on the vertical moving member 13, and an output shaft 22 of the rotary actuator 21 is provided with a coupling 2.
The horizontal shaft 24 is connected via a shaft 3, and the horizontal shaft 24 is rotatably supported by a bearing block 25 attached to the vertically moving member 13. The horizontal shaft 24 has a notch groove 2
6, a wiring hole 27 is formed in the axial center from one end of the cutout groove 26 to the other end of the reversing shaft, and a control electric wiring is inserted into the wiring hole 27.

A reversing arm 28 is key-fixed to a protruding end of the reversing shaft 24 from the bearing block 25. As shown in FIG. 3, the reversing arm 28 includes arm portions 29 extended on both sides, and an iron locking projection 31 protrudes near one end of each of the arm portions 29. The locking projection 31 is brought into contact with a piston-type shock absorber 32 which also serves as a pair of stoppers provided on both sides of the up-and-down moving member 13 so as to be adjustable in height position every time the reversing arm 28 is reversed by 180 degrees. , The reversing arm 28 is positioned at the time of reversing. Further, bearing portions 33 are integrally formed near the distal ends of both arm portions 29 of the reversing arm 28, and bushs 34 are formed in these bearing portions 33 as shown in FIG.
Are fixed by screws, and holder guide shafts 35 are press-fitted and fixed in the bushes 34, respectively.

In FIG. 2, left and right holder guide shafts 35 are provided.
A connecting plate 41 is fixed between the upper and lower ends of the pair, and a pair of upper and lower finger holders 42 are supported on the guide shaft 35 via ball sliders 43 so as to be movable in the axial direction. Has been enabled. Each ball slider 43 is connected to the finger holder 42.
The compression coil springs 44 are interposed between each ball slider 43 and the nearest connection plate 41, and each ball slider 43 is constantly pressed toward the center of the guide shaft 35. Thus, a predetermined position of each ball slider 43 is held. Thus, the reversing member 30 is constituted by the horizontal shaft 24, the reversing arm 28, the holder guide shaft 35, the connecting plate 41, the ball slider 43, and the compression coil spring 44, and the reversing member 30 and the rotary actuator 21 Rotating mechanism 4
0 is configured.

One end of an air cylinder 45 as an opening / closing mechanism is fixed to each connecting plate 41.
Is projected to the finger holder 42 side (the other side) away from the nearby finger holder 42 while penetrating the nearby finger holder 42, and each piston rod 46 of the cylinder 45 is connected and fixed to the other finger holder 42 on the other side. Have been. Thereby, both the finger holders 42 are driven by the driving of the cylinder 45.
Can be driven away from each other and close to each other. It is to be noted that the piston rod 46 of each cylinder 45 is fixed to the finger holder 42 on the remote side in order to shorten the length of the guide shaft 35, shorten the dimension between the two connecting plates 41, and reduce the external size. It is.

Each piston rod 4 of both connecting plates 41
The shock absorber 47 is provided at a position facing the connecting plate 6, and the tip of the piston rod 46 is connected to the connecting plate 4.
1 is buffered. Furthermore, a position detector 48 is provided at each end of the cylinder 45, and the position detector 48 detects which cylinder end the piston (not shown) in the cylinder 45 is located. As a result, when the finger holders 42, 42 are located at positions closest to or separated from each other, a signal is sent to control means (not shown) via the electric wiring, and the rotary actuator 21 and the like are driven in accordance with the sequence in response to the signal. It has become.

FIG. 5B is a side view of the pair of finger holders 42 and the fingers 52 in a separated state.
5A is a plan view of the upper finger 52 in the direction indicated by the arrow AA in FIG. 5B, and FIG. 5C is a plan view of the lower finger 52 similarly in the direction indicated by the line BB in FIG. It is.

Each of the pair of finger holders 42 has a flat plate-shaped finger mounting step 51, and one finger for each holder 42 is provided on the surface of the mounting steps 51 facing each other, that is, on the inner surface. 52 is fixed,
The finger holder 42 and the finger 52 constitute a pair of upper and lower work support members 50. Guide pins 54 are attached to these fingers 52 via elongated holes 53 at positions corresponding to the shape of the workpiece 1 which is a processing intermediate product to be inverted, and guide the side edges of the workpiece 1 to perform positioning. Note that the guide pins 54 are arranged so as to be shifted from each other so as not to interfere with each other when the pair of upper and lower work supporting members 50 are in a close state and the work 1 is gripped. A receiving rubber 55 is attached to the finger 52, and when the work supporting member 42 is in the close state, the pair of fingers 52 are located at positions facing each other so that the work 1 can be held and gripped from both sides. Is provided.

A support table 62 is provided on a base 61 connected to the support frame 11 near the finger 52 of the work support member 50, and a movable pressing member 60 is mounted on the support table 62. Have been. The pressing member 60 is
The head 64 attached to the tip of the piston rod comprises a thin air cylinder 63 with a guide, and moves forward when the air cylinder 63 is driven to move the work 1 on the opened work support member 50. By pressing the side edge, the work 1 is moved on the work support member 50 in the horizontal direction by a predetermined distance. Since the base 61 and the support 62 are connected by bolts 66 through the long holes 65, the head 64 of the air cylinder 63 can be adjusted to the position of the side edge of the work 1. The pointer 68 provided at the lower end of the support 62 and the scale 67 provided on the base 61 can be set at a predetermined position.

Next, the operation of the present embodiment will be described. First, the air cylinder 45 as an opening / closing mechanism is driven to move the pair of work supporting members 50 away from each other, and the fingers 5 attached to the finger holder 42 are moved.
Leave two spaces open. In this state, the work 1 is delivered onto the fingers 52 by a feed bar (not shown) of a line transfer robot of the press machine, and then the air cylinder 45 is operated in the reverse direction to move the work 1 between the upper and lower fingers 52. 1 is gripped. At this time, the work 1 is
And supported by the receiving rubber 55. After this gripping, the rotary actuator 2 as a reversal drive source
1 is driven to rotate the horizontal shaft 24 by 180 degrees, and the work supporting member 50 is inverted by 180 degrees via the reversing arm 28, the holder guide shaft 35 and the like. Thereby, the finger 52 is also 1
The work 1 is turned over by 80 degrees. On this occasion,
Even if the horizontal shaft 24 is rotated, the electric wiring provided in the hole 27 does not become complicated.

Next, the air cylinder 45 is driven in the opposite direction to that described above to release the work 1 by releasing the pair of work support members 50 and opening the fingers 52. And FIG.
As shown in (c), while driving the air cylinder 63 of the work moving source of the pressing member 50 and pressing the side edge of the work 1 with the head 64 of the piston rod, the head 64 is moved by a two-dot line. And moves the work 1 until the opposite side edge of the work 1 comes into contact with the guide pin 54A, which also serves as a stopper and is located at a position distant from the work 1 in advance corresponding to the offset amount. . next,
The air cylinder 63 is driven to move the head 64 backward. The work 1 is inverted and offset-corrected by the reversing device, supported by a feed bar (not shown), and transferred to the press machine side of the post-processing line.
Thereafter, the work support member 50 is turned 180 degrees in the opposite direction to the previous work after the next work 1 is delivered. Hereinafter, by repeating the above-described operation, the reversal of the work and the offset correction can be sequentially performed.

In the above-described first embodiment, the movement of the work 1 is performed by the pressing member 60 constituted by the air cylinder 63, but is constituted by a screw rod 71 shown in FIG. The pressing member 70 can also be used. As shown in FIG. 6, one end of the screw rod 71 is connected to the motor 7.
2 and the other end is fixed to a fixed plate 76.
The motor 72 drives the motor 72 so that the slide plate 73 screwed with the screw rod 71 is attached to the motor 7.
Forward or backward depending on the rotation direction of 2. Therefore, when the slide plate 73 moves forward, the slide plate 7
The head 75 moves forward via the guide 74 fixed to 3, and the work 1 on the finger 52 of the work support member 50 can be moved in the horizontal direction. At this time, for example, a proximity switch (not shown) is provided between the fixed plate 76, the slide plate 73, and the head 75,
By controlling the drive and the rotation direction of the motor 72 based on these electric signals, the head 75 can be automatically advanced or retracted by a predetermined distance.

Similarly, the pinion 8 shown in FIG.
The pressing member 80 composed of the rack 2 and the
Can be moved. That is, the pinion 82
Are directly connected to the rotating shaft of the motor 81,
Is driven, the pinion 82 rotates, and the pinion 82
The head 84 is guided by the guide 85 via the rack 83 that meshes with the motor 81, and moves forward or backward depending on the rotation direction of the motor 81.

Next, in the reversing operation of the work 1, the vertical position of the work transfer line before and after the reversing is changed depending on the size of the press machine located before and after the reversing operation process or the difference in the height of the mold. When it is necessary, the vertical movement member 13 is driven up and down by an air cylinder 16 as a vertical drive source.

Further, the reversing device of the present invention may not be provided with the vertical drive mechanism 10, and the approach / separation drive mechanism is not limited to the air cylinder 45, but may be a cam driven by a motor. The pair of work support members 50 may be a mechanism, and the pair of work support members 50 is not limited to the one in which the upper and lower support members 50 move together as in the embodiment. Then, both may be able to approach and separate from each other. The receiving rubber 55 provided on the finger 52 may have another configuration, for example, a ball bearing as long as it can accurately grip and slide the work 1.

[0024]

According to the present invention as described above, the inconsistency of the line conveyance due to the shift of the processing reference point in the processing line before and after the reversing device can be eliminated only by adding the pressing member to the reversing device. Cost, space saving, and productivity improvement can be achieved.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing the entire configuration of a reversing device according to a first embodiment of the present invention.

FIG. 2 is a front view of a partial cross section showing an embodiment of the opening / closing mechanism.

FIG. 3 is a plan view showing an embodiment of a rotation mechanism.

FIG. 4 is a partial cross-sectional front view showing an embodiment of the connection between the vertically moving air cylinder and the vertically moving member.

FIG. 5 is a side view and a plan view showing an embodiment of the same finger holder.

FIG. 6 is a plan view showing a pressing member according to a second embodiment of the present invention.

FIG. 7 is a plan view showing a pressing member according to a third embodiment of the present invention.

[Explanation of symbols]

1 is a work, 10 is a vertical drive mechanism, 11 is a support frame, 12 is a bush housing, 13 is a vertical member, 14 is a rod, 15 is a shock absorber, 16 is a vertical air cylinder, 17 is a piston rod, and 21 is a rotary actuator. , 22 is an output shaft, 23 is a coupling, 24
Is a horizontal shaft, 25 is a bearing block, 26 is a cutout groove, 27 is a wiring hole, 28 is a reversing arm, 29 is an arm, 30 is a reversing member, 31 is a locking projection, 32 is a shock absorber,
3 is a bearing, 34 is a bush, 35 is a holder guide, 40
Is a rotating mechanism, 41 is a connecting plate, 42 is a finger holder, 4
3 is a ball slider, 44 is a compression coil spring, 45 is an air cylinder, 46 is an air cylinder, 47 is a shock absorber, 48 is a position detector, 50 is a work supporting member,
1 is a finger mounting step, 52 is a finger, 53 long hole, 5
4 is a guide pin, 54A is a guide pin, 55 is a receiving rubber, 60 is a pressing member, 61 is a base, 62 is a support, 63
Is an air cylinder, 64 is a head, 65 is a long hole, 66 is a bolt, 67 is a scale, 68 is a pointer, 70 is a pressing member, 7
1 is a screw rod, 72 is a motor, 73 is a slide plate,
74 is a guide, 75 is a head, 76 is a fixed plate, 80
Is a pressing member, 81 is a motor, 82 is a pinion, 83 is a rack, 84 is a head, and 85 is a guide.

Claims (1)

[Claims] 1. A reversing device for clamping a delivered work from both sides by a work support member and rotating the work support member about a horizontal axis to reverse the work, wherein the reversing device is opened after the reversal. A reversing device, wherein a movable pressing member for moving the work on the work support member by a predetermined distance in the horizontal direction on the work support member is provided, and the work is transferred after the movement. .