JPH0520734Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a workpiece reversing device in a manufacturing line, and particularly to a workpiece reversing device suitable for conveying a workpiece having a protrusion on a lower surface on a roller conveyor.

[Conventional technology]

For example, a front lower arm (hereinafter referred to as a work) 1 of an automobile as shown in FIGS. 5 to 8
In the automatic process in which the bush 2 coated with oil is press-fitted and then cleaned, a layout as shown in FIG. 9 has conventionally been used.

That is, the workpiece 1 is mounted on the press-fitting machine 3, the bushing 2 is press-fitted, and then the workpiece 1 is transferred to the washing machine 5 via the transfer machine 4.
The workpiece 1 cleaned by the cleaning machine 5 is conveyed to a drive roller 7 via a free roller 6. The workpiece 1 is then conveyed via a drive roller 7 arranged in an arc shape onto a free roller 8 extending from the drive roller 7, and is placed next to a worker 9 in front of the press-fitting machine 3. This work 1 was to be returned to the pallet 10 that had been removed.

In this case, the operator 9 can perform the work of mounting the workpiece 1 on the press-fitting machine 3 and the work of checking the quality at the same location, and also can easily replace the pallet when the workpiece 10 is full. I was able to do it.

However, the workpiece 1 has a right side (R) 1a as shown in FIGS. 5 and 6 and a right side (R) 1a as shown in FIGS.
There are two types, a left side (L) 1b as shown in the figure, and some workpieces 1 are provided with a stabilizer mounting bracket 11.

On the other hand, since the cleaning machine 5 is designed to commonly process the R-side work 1a and the L-side work 1b,
It is discharged onto the free conveyor 6 in the posture shown in FIG. 6 or FIG. 8. In other words, work 1
Drain holes 12a formed in a and 1b, respectively.
12b is located on the lower side of the workpiece 1a and on the upper side of the workpiece 1b. Further, the openings 13a and 13b are opened upward in the workpiece 1a and downwardly in the workpiece 1b. Furthermore, when the works 1a and 1b are provided with brackets 11a and 11b, respectively, the brackets 11a and 11b are discharged with the work 1a facing upward and the work 1b facing downward. Therefore, the workpiece 1b with the bracket 11b facing downward has the roller 6,
7 and 8 cannot be conveyed.

For this reason, conventionally, as shown in FIG. 10, a two-split free roller 14 is provided on the unloading side of the washing machine 5, in which the contact portion of the bracket 11b of the workpiece 1b is cut out, and a pallet connected to this free roller 14 is provided. The workpiece 1b was placed on the workpiece 10.

Further, as this type of work reversing device, as described in Japanese Utility Model Application Publication No. 62-127787, a work is placed on a work reversing table having two orthogonal sides.
There is a known proposal in which the attitude of the work surface to be machined is changed by 90 degrees at the same position by horizontally moving and rotating the workpiece reversing table.

[Problem that the invention attempts to solve]

However, according to the conventional layout shown in FIG. 10, the pallet 10 is located on the back side of the washer 5 on the opposite side from the operator 9, making it difficult to check the quality of the workpiece 1b that has been cleaned. Furthermore, when replacing the pallet when the pallet 10 is full of workpieces 1b, the operator 9 must use the washing machine 5.
There was a problem in that workability was poor because the operator had to go to the back side of the machine.

Furthermore, as shown in FIGS. 7 and 8, since the drain hole 12b formed in the workpiece 1b is located on the upper surface of the workpiece 1b, water during cleaning tends to remain inside.
This water flows out when the workpiece 1b is assembled into the vehicle in the subsequent process, causing many problems such as deterioration of the working environment.

Further, the proposal described in the above-mentioned publication does not give any consideration to the transportation means or drainage problems when a protrusion is formed on the lower surface of the workpiece.

The present invention was developed in view of the above circumstances, and allows a workpiece with a protrusion formed on the lower surface to be easily transported to the operator side on the production line after processing.
An object of the present invention is to provide a work reversing device that can improve work efficiency.

[Means for solving problems]

In order to achieve the above object, the present invention includes a cylindrical part whose one end in the axial direction is rotatably supported on a pedestal, and whose other end is connected to the drive shaft of a cylinder attached to the pedestal; A plurality of free rollers are rotatably mounted inside the unit via a support shaft parallel to the axial direction, and each of the free rollers is supported parallel to the support shaft.
The lower free roller is provided opposite to each other, and the lower free roller is fixed to the outer periphery of the cylindrical portion. a motor for rotationally driving the rotating roller portion; a workpiece exit formed on a side surface of the cylindrical portion; a door portion for opening and closing the workpiece exit; and a door portion formed on an end surface of one side of the cylindrical portion. a workpiece loading inlet; a loading roller portion provided opposite to the workpiece loading inlet for loading the workpiece into the cylindrical portion; and a loading roller portion consisting of a two-split roller similar to the lower free roller; and the door portion. A carry-out roller section includes a drive roller and a free roller, which are arranged opposite to each other and are configured to carry out the workpiece in the cylindrical section to the outside, and after carrying the workpiece into the cylindrical section,
The workpiece can be reversed and carried out to the carrying-out roller section.

[Effect]

According to the above configuration, the work carried into the cylindrical part from the carry-in roller part is inserted between a pair of upper and lower rotating roller parts rotatably provided in the cylindrical part, and when the protruding part of the work is facing downward, The workpiece is reversed by rotating the rotary roller section with a motor, and the reversed workpiece is carried out to the carry-out roller section by opening the door section from a workpiece carry-out port formed on the side surface of the cylindrical section. Therefore, even if there is a protrusion on the lower part of the workpiece to be inserted into the cylindrical part, the free roller of the carry-in roller part and the lower free roller of the rotating roller part are cut out at positions that align with the protrusion formed on the lower surface of the workpiece. Since it is a two-part roller with a section formed on it, it is easily conveyed, and when it is then carried out to the carry-out roller section, the protruding section faces upward, so that it can be conveyed to the worker side without any trouble using the drive roller. .

Further, since the axial direction of the cylindrical portion can be changed by the cylinder, the inclinations of the free roller provided in the rotating roller portion and the free rollers of the carry-in roller portion and the carry-out roller portion can be made to match each other.

Further, by rotationally driving the rotating roller portion, water remaining in the workpiece is discharged through the drain hole.

〔Example〕

Hereinafter, one embodiment of the work reversing device according to the present invention will be described with reference to the drawings.

An embodiment of the present invention is shown in FIGS. 1 to 4.
A pair of supports 16a, 1 are provided near one side of the pedestal 15.
6b is erected, and these supports 16a, 1
Brackets 18a and 18b formed protruding from both sides of one end surface of the cylindrical portion 17 are rotatably supported on the cylindrical portion 6b via support shafts 19a and 19b, respectively. A support plate 2 is provided on the other end surface of the cylindrical portion 17.
0 is fixed, and one end of a drive shaft 23 of an air cylinder 22 rotatably attached to the pedestal 15 via a mounting member 21 is connected to this support plate 20.

A support shaft 24 is rotatably supported on the support plate 20 concentrically with the cylindrical portion 17 via a pillow block 25 fixed to the support plate 20.
A rotating roller portion 26 is fixed to this support shaft 24 . This rotating roller portion 26 is rotatably supported at both ends by brackets 27a and 27b, respectively.
The upper and lower parts 1 have a plurality of free rollers 28a and 28b arranged on one plane parallel to the spindle 24.
It consists of a pair of upper roller portions 29a and lower roller portions 29b.

Furthermore, guide wheels 30a and 30b are provided on the outside of the brackets 27a and 27b, respectively, so as to rotatably abut on the inner circumferential surface of the cylindrical portion 17, thereby preventing the rotating roller portion 26 from wobbling during rotation. It's becoming like that. A free roller 28b is provided in the lower roller portion 29b at a position where the bracket 11b provided on the workpiece 1b comes into contact when the workpiece 1b shown in FIGS. 7 and 8 is placed on the free roller 28b. It is not a two-part free roller.

On the other hand, a sprocket 31 is fixed to one end of the support shaft 24 protruding from the support plate 20, and a motor 33 is fixed to the upper part of the support plate 20 via a bracket 32. And this motor 33
A chain 36 is suspended between a sprocket 35 fixed to the drive shaft 34 and a sprocket 31 fixed to the support shaft 24. Also, the cylindrical part 1
A workpiece outlet 37 for carrying out the workpiece 1 parallel to the axial direction is formed on the side surface of the workpiece 7, and one end is rotatably supported on the outside of the workpiece outlet 37 via a support shaft 38. A door portion 39 is provided. This door section 39 is connected to an air cylinder 4 attached to the upper part of the cylindrical section 17 via a bracket 40.
The door section 39 is connected to the tip of the drive shaft 42 of the air cylinder 41, and the door section 39 is opened and closed by the operation of the air cylinder 41.

The carry-in roller part 43 is provided opposite to a workpiece carry-in port 44 formed on the end surface of the cylindrical part 17 opposite to the side on which the support plate 20 is fixed, and is attached to the support column 45 at an angle. . This carry-in roller section 43 is made up of a plurality of free rollers 46 arranged in parallel, and is a two-split free roller like the lower roller section 29b of the rotating roller section 26 described above. Further, the carry-out roller section 47 is provided opposite to the workpiece carry-out port 37, and is attached to the support column 48 at an angle.

As shown in FIG. 4, this carry-out roller section 47 is composed of a drive roller 49 arranged in an arc shape and a free roller 50 connected to this drive roller 49. It is connected to a pallet 10 placed next to the person 9.

Next, the operation of this embodiment configured as described above will be explained. In FIG. 4, when an operator 9 sets the work 1 shown in FIGS. 5 to 8 and a bush (not shown) in a predetermined position, oil is applied to the bush fully automatically, the bush is press-fitted by the press-fitting machine 3, The workpiece 1 is cleaned by the cleaning machine 5. The work 1a that has been completely cleaned is discharged from the washer 5 in the attitude shown in FIG. 6, and the work 1b is discharged in the attitude shown in FIG. When the workpiece 1 is carried in via the carry-in roller part 43 onto the lower free roller 28b of the rotating roller part 26 provided in the cylindrical part 17 of the reversing device 51 shown in FIGS. The cylindrical portion 17, which was inclined parallel to the carry-in roller portion 43, is rotated in the horizontal direction by the operation of the air cylinder 22.

At this time, if the work 1 is the R-side work 1a, the motor 33 rotates to move the rotating roller part 26 approximately clockwise in FIG. 2 via the chain 36.
Rotate 90 degrees. As a result, the opening 13a of the workpiece 1a faces downward, and the water remaining in the workpiece 1a is discharged. This rotary roller part 2 after draining
6 in the counterclockwise direction by about 95 degrees, so that the bracket 11a, which is the original position, is facing upward.

Next, operate the air cylinder 41 to close the door 39.
is opened, and the workpiece 1a is discharged from the workpiece discharge port 37 to the discharge roller part 47 by tilting the rotary roller part 26 at about 5 degrees. That is, when the work 1 is the R side work 1a, it is discharged with the bracket 11a facing upward, so even if the work is discharged only by draining the water without turning it over, the drive roller 7 of the discharge roller section 47 and the free It can be conveyed on rollers 8 and placed on pallet 10.

On the other hand, when the workpiece 1 carried into the rotating roller section 26 is the L-side workpiece 1b, the bracket 11b is oriented downward as shown in FIG.
However, since the free roller 46 of the carry-in roller section 43 and the lower free roller 28b of the rotating roller section 26 are each divided into two rollers, the workpiece 1
The conveyance of b to the rotating roller section 26 is carried out without any problem.

When the workpiece 1b is carried onto the lower free roller 28b of the rotating roller section 26, the motor 33 rotates to rotate the rotating roller section 26 approximately 175 degrees clockwise in FIG. 2 via the chain 36, and the workpiece 1b is placed on the upper free roller 28a.
In this state, the bracket 11b faces upward and the drain hole 12b faces downward. and work 1a
The door section 39 is opened and the workpiece 1b is discharged to the carry-out roller section 47 in the same manner as in the case of. At this time, drain hole 1
Since the brackets 2b are oriented downward, drainage is sufficiently carried out, and since the brackets 11b are oriented upward, there is no problem in conveyance at the carry-out roller section 47.

After the works 1a and 1b are discharged to the carry-out roller part 47, the door part 39 is closed by the air cylinder 41, the cylindrical part 17 is aligned with the inclination of the carry-in roller part 43 by the air cylinder 22, and then the motor is 33, the rotating roller portion 26 is returned to its original position. That is, when the work 1 is the R-side work 1a, the rotating roller portion 26 is rotated approximately 5 degrees clockwise, and when the work 1 is the L-side work 1b, it is rotated approximately 185 degrees clockwise.

According to this embodiment, if the bracket 11 provided on the workpiece 1 is facing downward when it is carried into the rotating roller section 26, it can be turned upward by rotating the rotating roller section 26. Therefore, the paper can be transported on the delivery roller section 47 without any trouble.

Therefore, the layout of the carry-out roller section 47 can be freely arranged, and the pallet 10 can be placed next to the operator 9 in front of the press-in machine 3, and the workpiece 1 can be placed on this pallet 10. As a result, the operator 9 can set the workpiece 1 and clean the workpiece 1.
The quality checks can be carried out at the same location, and the same operator 9 can also replace the pallet when the pallet 10 is full of works 1, improving work efficiency.

In the above embodiment, the case where the workpiece 1 is a front lower arm of an automobile has been described, but the present invention can also be applied to the case where the workpiece 1 is another part having a protrusion on the lower surface, and the same effect can be achieved.

[Effect of idea]

As described above, according to the present invention, a cylindrical part is tiltably supported on a pedestal, and a rotary roller part consisting of a pair of upper and lower free rollers is rotatably provided in the cylindrical part, and the lower free roller is arranged to rotate on the lower surface of the workpiece. The two-part roller has a notch formed at a position that aligns with the protrusion formed in the roller, and by rotating this rotating roller part, the workpiece carried into the rotating roller part with the protrusion facing downward is reversed. Therefore, even if there is a protrusion at the bottom of the work, by inverting the work so that the protrusion faces upward, the work with the protrusion can be transported by the delivery roller section.

As a result, the layout of the unloading roller section can be freely arranged, and the worker who sets the workpiece can check the quality of the workpiece at the same position.
It becomes easy to replace the pallet on which the work is placed, further improving work efficiency.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the work reversing device according to the present invention, Fig. 2 is a side view of Fig. 1, and Fig. 3 is a side view of Fig. 1.
The figure is a view taken along the line A-A in FIG. 1, FIG. 4 is a plan view showing the layout of a device using the work reversing device according to this embodiment, and FIGS. 5 and 7 are views showing the workpiece used in this embodiment. The plan view shown in FIGS. 6 and 8 is a front view of FIGS. 5 and 7, and FIG. 9 and 1.
FIG. 0 is a plan view showing the layout of a conventional device. 1...Work, 11...Bracket (protrusion),
15... Frame, 17... Cylindrical part, 22, 41...
Air cylinder, 23... Drive shaft, 24... Support shaft,
26... Rotating roller section, 28, 46, 50... Free roller, 33... Motor, 37... Workpiece unloading port, 39... Door section, 43... Carrying in roller section, 4
4... Work loading port, 47... Carrying out roller section, 4
9... Drive roller, 51... Reversing device.

Claims (1)

[Scope of utility model registration request] One end in the axial direction is rotatably supported on the frame,
A cylindrical part whose other end is connected to the drive shaft of a cylinder attached to the frame, and a cylindrical part rotatably mounted inside the cylindrical part via a support shaft parallel to the axial direction, each supported parallel to the support shaft. A pair of upper and lower free rollers are provided facing each other, and the lower free roller is a rotary roller section consisting of a two-part roller with a notch formed at a position aligned with a protrusion formed on the lower surface of the workpiece. a motor fixedly attached to the outer periphery of the cylindrical portion to rotationally drive the rotating roller portion; a workpiece exit formed on a side surface of the cylindrical portion; a door for opening and closing the workpiece exit; and a door portion for opening and closing the workpiece exit; A workpiece loading port is formed on one end face of the workpiece loading port, and a loading roller provided opposite to the workpiece loading port for loading the workpiece into the cylindrical portion is formed by a two-part roller similar to the lower free roller. and an unloading roller section that is provided opposite to the door and includes a drive roller and a free roller for transporting the workpiece inside the cylindrical part to the outside. 1. A workpiece reversing device, characterized in that the workpiece is inverted after being carried into the workpiece and can be carried out to the carrying-out roller section.