JP3189404B2 - Work reversing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work reversing device for reversing a work vertically.

[0002]

2. Description of the Related Art For example, in an automobile engine production facility, when a head mounting surface of a cylinder block and an oil pan mounting surface are machined on the same production line, the work is vertically moved during the machining process. A work reversing device is installed in the above-mentioned production line in order to reverse the above. The work reversing device generally includes a frame that rotates around a horizontal axis. After the work is loaded into a work holding unit provided on the frame, the work is reversed by rotating the frame by 180 °. Working.

[0003]

In the above-described conventional work reversing device, only works having a predetermined outer size are to be worked. Failed to perform the reversal operation. A first object of the present invention is to provide a work reversing device capable of reversing a plurality of types of works having different heights in view of the above situation.

In the above-described conventional work reversing device, a cylinder actuator is generally employed as a means for paying out the completed work from the work holding portion to the outside of the device. Complete dispensing requires a long stroke length, in other words, a cylinder actuator with a long overall length due to the long moving distance of the work, which inevitably increases the appearance of the work reversing device. . A second object of the present invention is to provide a work reversing device capable of preventing the appearance from being enlarged due to the work payout means in view of the above situation.

In the above-described work reversing device, various pipes such as a hydraulic hose extending from a hydraulic supply source or the like are connected to a work holding actuator or the like provided on the rotating frame, but these pipes are not supported at all. When,
Since the various pipes are deformed randomly with the rotation of the rotating frame, there is an inconvenience that durability is reduced due to excessive external force being applied or being damaged by collision with peripheral equipment.
On the other hand, as a configuration for supporting the various pipes, there is a configuration in which one end of the chain is attached to the rotating frame to support the various pipes. However, in a configuration using such a chain, the chain itself is expensive. Not only does the cost of the entire device increase, but the moving space of the chain needs to be set large so as not to hinder the movement of the chain that moves with the rotation of the rotating frame. Was inconvenient. A third object of the present invention is to provide a work reversing device capable of supporting various pipes extending from a rotating frame without increasing the cost and increasing the size of the external appearance in view of the above-described situation. Aim.

[0006]

In order to achieve the first object, the present invention provides a rotating frame which is rotatably supported about an axis extending in a horizontal direction with respect to a supporting frame fixedly installed on a floor. In the state where the rotating frame is occupied at the work loading standby position, a work unloading conveyor is fixed above the work holding area, and the work loading conveyor is opposed to the work unloading conveyor below the work holding area. In addition to the arrangement, work lifting means for moving the work carry-in conveyor close to the work carry-out conveyor is provided so that the upper surface of the work placed on the work carry-in conveyor is brought into contact with the work carry-out conveyor.

According to the present invention, in order to achieve the second object, a rotating frame rotatably supported about an axis extending in a horizontal direction with respect to a supporting frame fixedly installed on a floor is provided with a work in the rotating frame. Work dispensing means for disposing a work loading conveyor and a work unloading conveyor facing each other across a holding area, and dispensing a work placed on the work unloading conveyor from a work holding area of a rotating frame based on a plurality of reciprocating operations. Is provided.

According to the present invention, in order to achieve the third object, the pipe extending from the rotating frame is made of a thin plate of a flexible material, and one end and the other end are respectively provided with a predetermined portion other than the rotating frame and the rotating frame. A guide piece and a guide roller for guiding the guide plate along the outer peripheral edge of the rotary frame are provided on the outer peripheral edge of the rotary frame and the support frame while being supported by the guide plate supported by the fixing member. ing.

[0009]

According to the first configuration, the work carried into the work holding area of the rotary frame is moved by the work moving means and the work carry-in conveyor and the work carry-in conveyor are operated regardless of the height of the work. Will be pinched.

Further, according to the second configuration, the work can be discharged from the work holding area by employing a cylinder actuator having a short stroke length, in other words, a short overall length, as the cylinder actuator as the work discharging means. Becomes

Further, according to the third configuration, the various pipes extending from the rotating frame are supported by the guide plate without using an expensive chain, and the guide plate is also moved along with the rotation of the rotating frame by the guide piece. By the cooperative action of the guide rollers, the rotary frame is guided along the outer peripheral edge of the rotary frame.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing one embodiment. 1 to 18 show an example in which a work reversing device according to the present invention is configured as a work reversing device for reversing a cylinder block in an automobile engine upside down.

The work reversing device 1 is shown in FIGS.
And a support frame 10 fixedly installed on a line floor F via a base frame 2 as shown in FIG.
And a rotating frame 20 rotatably supported with respect to zero.

As shown in FIGS. 1 to 3, the support frame 10 has a pair of face plates 11, 11 facing each other, and each face plate 11 has a substantially circular opening 11a for entering a work. Each is formed.

On the other hand, the rotating frame 20 includes a pair of side disks 21 and 21 each having a disk shape.
Each of the side disks 21 has a work entry opening 21a formed in a substantially central area thereof.

The rotating frame 20 is provided so that the peripheral portion of each side disk 21 is supported by the supporting frame 10.
Is supported via a guide wheel 12 which is rotatably supported on the support frame 10 about an axis extending in the horizontal direction.

The side disk 2 of the rotating frame 20
1, a sprocket 30 is fixedly mounted concentrically with the rotating shaft of the rotating frame 20, and the supporting frame 1
0 and the sprocket 30
A transmission chain 32 is wound around the rotating frame 20, and the rotating frame 20 is driven and rotated by the driving motor 31.

A stopper block 22 is attached to the side disk 21 of the rotating frame 20, while an opening 11a in the face plate 11 of the support frame 10 is provided.
Stopper bolts 13L and 13R are attached to the left and right sides, respectively, and the rotation range of the rotary frame 20 is regulated within a range of 180 ° by the stopper block 22 abutting on the stopper bolts 13L and 13R. I have.

On the other hand, the rotating frame 20 is provided with a work carry-out conveyor 40 and a work carry-in conveyor 50. When the rotary frame 20 is in the workpiece loading standby position as shown in FIGS. 1 and 2, the workpiece unloading conveyor 40 has a workpiece entry opening 21.
The work unloading conveyor 50 is disposed below the work entry opening 21a in a manner opposed to the work unloading conveyor 40, while being fixed above the work a. In other words, the work unloading conveyor 40 is arranged above the work holding area 20S in the rotary frame 20, while the work loading conveyer 50 is arranged below the work holding area 20S.

The work carrying conveyor 50 is mounted on a conveyor base 61, and a cylinder actuator 62 is mounted on the conveyor base plate 61. The cylinder actuator 62 is fixed to a base plate 63 fixed to the side disk 21 of the rotating frame 20.
Work moving means 60 is constituted by the cylinder actuator 62 and the like.

The work carry-in conveyor 50 moves up and down in a manner to approach and separate from the work carry-out conveyor 40 based on the operation of the work moving means 60.
The base plate 63 is provided with a guide bar 64 serving as a guide for carrying in the work.

On the other hand, a cylinder actuator 71 is attached to the rotary frame 20 in the vicinity of the work unloading conveyor 40 along the direction in which the conveyor 40 extends. Is provided with a payout arm 72.

Further, the payout arm 72 is provided with a guide rod 74 extending through a guide sleeve 73 fixed to the side disk 21 and a payout claw 75 facing the work holding area 20S of the rotating frame 20. In addition, the cylinder actuator 71, the dispensing arm 72, the dispensing claw 75, and the like constitute a work dispensing unit 70.

As shown in FIG. 7, the dispensing claw 75 is swingably supported by a dispensing arm 72 via a support shaft 76, and is driven by the tension of a tension spring 77 anchored between the dispensing arm 72 and the dispensing arm 72. In the normal state, while occupying the locking position shown by the solid line, when an external force is applied from the right side in the figure, it moves to the retracted position shown by the chain line in the figure against the tension of the tension spring 77. Rocks.

On the other hand, as shown in FIG. 8, the work carrying side of the work carrying conveyer 50 (right side in FIG. 8A).
An anti-back claw 52 is swingably supported on a bracket 51 attached to the end of the bracket 51 via a support shaft 53, and a stopper piece 5 fixed to the bracket 51 is provided.
A tension spring 55 is anchored between the anti-back claw 51 and the anti-back claw 51.

The anti-back claw 52 normally comes into contact with the stopper piece 54 by the tension of the tension spring 55 and occupies the anti-back position indicated by the solid line in the drawing, while external force acts from the right in the drawing. In this case, that is, when pressed by the work W carried into the work carry-in conveyor 50, the work W swings to the retreat position indicated by a chain line.

As shown in FIGS. 1 and 3, a work stopper lever 80 is swingably supported on a side disk 21 of a rotating frame 20 via a support shaft 81. Side disk 21
When the rotary frame 20 is at the work carry-in standby position, the work stopper lever 80 contacts the pin 83 and occupies the stopper position facing the work holding area 20S. Rank.

On the other hand, the pipes of the cylinder actuators 62 and 71 in the work discharging means 60 and the work moving means 70 are connected to a manifold 90 fixed to the side disk 21 of the rotary frame 20. , The manifold 90
A hose pipe 91 extending from the hose is held by a guide plate 92 and guided to a manifold 94 provided at a tip end of a hanger frame 93 (see FIGS. 4 and 6).

The guide plate 92 is formed of a thin plate of a flexible material such as a stainless steel plate, for example.
The other end is attached to a predetermined fixing member other than the rotating frame 20, specifically, the manifold 94 described above.

The guide plate 92 supports and holds the hose pipe 91 via a plurality of holding plates 96 attached to the guide plate 92. The guide plate 92 can support not only pipes extending from the cylinder actuators 62 and the cylinder actuators 71 but also electric wires extending from various switches (not shown) provided on the rotary frame 20. It is possible.

The side disk 21 of the rotating frame 20 has a plurality of guide pieces 9 on its outer peripheral edge.
Are provided, while the support frame 10 is provided with a plurality of guide rollers 14.

As clearly shown in FIG.
Is occupied at the work carry-in standby position, the guide plate 92 moves along the shape of the outer peripheral edge of the rotating frame 20, more specifically, the side disk 21, by the cooperation of the guide piece 97 and the guide roller 14. It is guided in a curved state.

As shown in FIGS. 4 to 6, the work reversing device 1 is provided with a conveyor 10 for feeding the work.
0 is provided. This conveyor 100 has a frame 2
Is a so-called flip-up type conveyor which is supported so as to be able to swing upward, and a proximity switch 101 (see FIG. 6) is provided to confirm that the conveyor occupies the operating position. I have a lock. That is, the work reversing device 1 is configured not to operate when the conveyor 100 is flipped up. As shown in FIG. 5, a work supply conveyor 200 is provided on the right side of the work reversing device 1 so as to face the work delivery conveyor 100 with the support frame 10 and the rotating frame 20 interposed therebetween. Is installed.

In order to carry out the work reversing work in the work reversing device 1, first, as shown in FIG. 11, the work is turned on the work supply conveyor 200 with the lower surface (oil pan mounting surface) Wl downward. The work (cylinder block) W is transferred to the conveyor 20 manually by an operator.
From above (solid line in the figure), the work W is pushed into the work holding area 20S of the rotating frame 20 as shown by a chain line in the figure, and the work W is transferred onto the work carrying conveyer 50.

At this time, the rotating frame 20 occupies the work loading standby position where the work loading conveyor 50 is located below, and the work loading conveyor 50 is at the same height as the work supply conveyor 200. Is located at the level.

When the work W is pushed into the work holding area 20S of the rotary frame 20, the work stopper lever 80 provided on the side disk 21 cooperates with the anti-back claw 52 provided on the work carrying conveyor 50. The action prevents the workpiece W from dropping from the rotating frame 20 before it occurs.

Next, as shown in FIG. 12, when the dimension of the work W in the height direction is small, the work loading conveyor 50 is raised by the operation of the cylinder actuator 62 of the work upward moving means 60, and the work W The upper surface Wu is brought into contact with the work carry-out conveyor 40, and the work W is thereby held and held between the work carry-out conveyor 40 and the work carry-in conveyor 50.

Here, in the case of a work W having a small height as described above, it is necessary to raise the work carry-in conveyor 50. However, the work carry-out conveyor 40 and the work carry-in conveyor 50 in a standby state are required. In the case of a work having a height corresponding to the interval, the work is placed in the work holding area 20S.
It is needless to say that it is not necessary to raise the work carry-in conveyor 50 because the work carry-in conveyor 40 and the work carry-in conveyor 50 hold the work carry-in conveyor 50 in a state where the work carry-in conveyor 50 is pushed.

After the work W is held by the work carry-out conveyor 40 and the work carry-in conveyor 50, the work W shown in FIG.
The work W is turned over by rotating the rotary frame 20 by 180 ° as shown in FIG. In this state, the lower surface (oil pan mounting surface) Wl of the work W is located above, and the upper surface (head mounting surface) Wu is located below. Also, at this time, the work unloading conveyor 40 is
It is located below the work loading conveyor 50 and at the same height level as the work delivery conveyor 100.

When the rotary frame 20 is turned 180 ° as shown in FIG. 10 from the state in which the rotary frame 20 is occupied at the work loading standby position as shown in FIG. 9, the work stopper facing the work holding area 20S Lever 80
By abutting on a pin 84 protruding from the face plate 11 of the support frame 10, it swings to a position where the work holding area 20 </ b> S is released against the tension of the tension spring 82 (see FIG. 1). The movement restriction of W is released.

After reversing the work W, the work W is discharged from the work carrying-out conveyor 40 (shown by a chain line in FIG. 14) to the outside of the rotary frame 20 by the above-described work discharging means 70, as shown in FIG. As shown by the solid line in the figure, the workpiece is transferred onto the conveyor 100 for sending out the workpiece. Thereafter, the work W is conveyed to the next manufacturing process by the work delivery conveyor 100 with the lower surface (oil pan mounting surface) Wl facing upward.

Here, as shown in FIG. 15, when the work W is held inside the rotating frame 20, the cylinder actuator 7 in the work discharging means 70 is used.
The first operating rod 71a is in the retracted position, and the dispensing claw 75 of the workpiece dispensing means 70 is in the locked position (FIG. 7).
(A), and occupies the left rib Wr of the work W. The rib Wr is a thin portion between the cylinders arranged in parallel.

When the work W is reversed in the above-described manner,
The work discharging means 70 starts operating, and first, the operating rod 71a of the cylinder actuator 71 extends to the position shown in FIG. Thereby, the rib W of the work W
The payout claw 75 is locked at r, and the work W is moved to a position where a part of the work W is placed on the conveyor 100 for feeding the work as shown in the figure.

Next, the operating rod 71a of the cylinder actuator 71 retracts to the initial position as shown in FIG. At this time, the dispensing claw 75 is moved to the right while oscillating to the retreat position (a chain line in FIG. 7A) as appropriate, and a rib located on the right side of the left side rib Wr of the workpiece W. Stop at the position facing Wr '.

Thereafter, the operating rod 71a of the cylinder actuator 71 extends again to the position shown in FIG. As a result, the payout claw 75 is locked to the rib Wr 'of the work W, and the work W is completely moved from the rotary frame 20 to the position where the whole work W is placed on the work delivery conveyor 100 as shown in the figure. Will be paid out.

After the work W is paid out, the operating rod 71a of the cylinder actuator 71 contracts again and returns to the initial position.

As described above, the work discharging means 70
Then, the operating rod 71a of the cylinder actuator 71
The work W is paid out by extending and retracting a plurality of times. For this reason, the stroke of the operating rod 71a in the cylinder actuator 71 may be short, and the cylinder actuator 71
2, the entire length of the work discharging means 70, which is one of the components of the cylinder actuator 71, is substantially accommodated in the support frame 10 and the rotating frame 20 as shown in FIG. The appearance of the device 1 does not need to be enlarged.

Since the work discharging means 70 is arranged close to the work unloading conveyor 40,
When the work W is turned over, it is actually positioned below the work W. However, in FIG. 15 to FIG. It is drawn above the work W. In addition, the installation location of the work discharging means 70 is not limited to the vicinity of the above-described work unloading conveyor 40, but may be installed at any location on the rotating frame 20 depending on the type and shape of the work to be handled. is there.

When the work W is discharged from the rotating frame 20 by the operation of the work discharging means 70 as described above, the rotating frame 20 rotates backward by 180 ° and returns to the work loading standby position.
0 also returns to the initial position and prepares for loading of the next work.

The work reversing device according to the present invention comprises:
It goes without saying that the present invention can be effectively applied not only to a device for inverting a cylinder block in an automobile engine shown in the embodiment but also to a work reversing device for reversing various works upside down.

[0051]

As described above in detail, in the work reversing device according to the present invention, the rotating frame rotatably supported around the axis extending in the horizontal direction with respect to the supporting frame fixedly installed on the floor is provided. A work unloading conveyor is fixed above the work holding area when the rotating frame is occupied at the work loading standby position, and a work loading conveyor is arranged below the work holding area so as to face the work unloading conveyor. In addition, since the upper surface of the work placed on the work carry-in conveyor is brought into contact with the work carry-out conveyor, a work lifting means for moving the work carry-in conveyor close to the work carry-out conveyor is provided. The work carried into the work holding area at, regardless of its height, is Will be held between the click unloading conveyor and the workpiece carrying-conveyor, it is possible to invert a plurality of types of workpieces of different heights have.

Further, in the work reversing device according to the present invention, the work holding area of the rotating frame is sandwiched between the rotating frame that is rotatably supported around an axis extending in the horizontal direction with respect to the supporting frame fixedly installed on the floor. In addition, a work carrying-in conveyor and a work carrying-out conveyor are arranged to face each other, and a work paying-out means for paying out a work placed on the work carrying-out conveyor from a work holding area of a rotating frame based on a plurality of reciprocating operations is provided. Therefore, by employing a cylinder actuator having a short stroke length, in other words, a short overall length, it is possible to prevent the appearance from being enlarged due to the work discharging means.

Further, in the work reversing device according to the present invention, the various pipes extending from the rotating frame are made of a thin plate of a flexible material, and one end and the other end are fixed members other than the rotating frame and the rotating frame, respectively. Since the guide plate and the guide roller for guiding the guide plate along the outer peripheral edge of the rotating frame are provided on the outer peripheral edge of the rotating frame and the supporting frame, the cost is high. The various pipes can be supported without using a chain, and at the same time, when the rotating frame rotates, the guide plate is guided along the outer peripheral edge of the rotating frame by the guide piece and the guide roller. Does not require large space to allow plate movement, thus increasing costs Without causing an increase in the size of and appearance, it is possible to support the various pipes extending from the rotating frame.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a main part of a work reversing device according to the present invention.

FIG. 2 is a sectional side view showing a main part of the work reversing device.

FIG. 3 is a sectional plan view showing a main part of the work reversing device.

FIG. 4 is an overall front view of the work reversing device.

FIG. 5 is an overall side view of the work reversing device.

FIG. 6 is an overall plan view of the work reversing device.

FIGS. 7A and 7B are a side view and a bottom view showing the periphery of a dispensing claw.

8 (a) and (b) are a side view and an end view showing the periphery of the anti-back nail.

FIG. 9 is a conceptual front view showing an operation mode of a work stopper lever in the work reversing device.

FIG. 10 is a conceptual front view showing an operation mode of a work stopper lever in the work reversing device.

FIG. 11 is a conceptual side view showing an operation mode of a workpiece moving means in the workpiece reversing device.

FIG. 12 is a conceptual side view showing an operation mode of a workpiece moving means in the workpiece reversing device.

FIG. 13 is a conceptual side view showing an operation mode of a work moving means in the work reversing device.

FIG. 14 is a conceptual side view showing an operation mode of a work moving means in the work reversing device.

FIG. 15 is a conceptual side view showing an operation mode of a work discharging means in the work reversing device.

FIG. 16 is a conceptual side view showing an operation mode of a work discharging means in the work reversing device.

FIG. 17 is a conceptual side view showing an operation mode of a work discharging means in the work reversing device.

FIG. 18 is a conceptual side view showing an operation mode of a work discharging means in the work reversing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Work reversing device, 10 ... Support frame, 14 ... Guide roller, 20 ... Rotating frame, 20S ... Work holding area, 40 ... Work carry-in conveyor, 50 ... Work carry-out conveyor, 60 ... Work moving means, 61 ... Conveyor base , 62: cylinder actuator, 70: work releasing means, 71: cylinder actuator, 72: discharging arm, 75: discharging claw, 91: hose piping, 92: guide plate, 94: manifold, 95: support block, 97: guide piece W: Work, Wu: Upper surface, Wl: Lower surface.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65G 47/22-47/24

Claims (2)

(57) [Claims] 1. A rotating frame rotatably supported on an axis extending in a horizontal direction with respect to a supporting frame fixedly installed on a floor, and a rotating frame fixedly mounted on the rotating frame, wherein the rotating frame is at a work loading standby position. In the state in which the work holding area is occupied in the work holding area, the work carrying out conveyor positioned above the work holding area, and the work carrying out area is opposed to the work carrying out conveyor, and in the state where the rotating frame is occupied in the work carrying in standby position, the work holding area The work loading conveyor positioned below the upper surface of the work placed on the work loading conveyor,
In order to abut the work unloading conveyor, a work lifting means for moving the work unloading conveyor close to the work unloading conveyor, and a pipe extending from the rotating frame are supported. A guide plate supported by a rotating frame and a predetermined fixed member other than the rotating frame and made of a thin plate of a flexible material; and a guide plate provided on an outer peripheral edge of the rotating frame and in contact with the guide plate. A guide piece that guides the guide plate along the outer peripheral edge of the rotating frame; and a guide roller that is provided on the support frame and guides the guide plate along the outer peripheral edge of the rotating frame in cooperation with the guide piece. A work reversing device, comprising: 2. A rotating frame rotatably supported about an axis extending in a horizontal direction with respect to a supporting frame fixedly installed on a floor, and a rotating frame provided on the rotating frame and sandwiching a work holding area of the rotating frame. A work carrying-in conveyor and a work carrying-out conveyor which are arranged to face each other, and a work paying-out means for paying out a work placed on the work carrying-out conveyor from a work holding area of the rotating frame based on a plurality of reciprocating operations; A guide plate that supports a pipe extending from the rotating frame, one end and the other end of which are supported by the rotating frame and a predetermined fixed member other than the rotating frame, respectively, and which is made of a thin plate of a flexible material; The guide plate is provided at the outer peripheral edge of the A guide piece that guides along the outer peripheral edge of the frame; and a guide roller that is provided on the support frame and guides the guide plate along the outer peripheral edge of the rotating frame in cooperation with the guide piece. A work reversing device, comprising: