JPH08231015A - Workpiece rotating device - Google Patents

Abstract

PURPOSE: To provide a workpiece rotating device capable of miniaturizing it as small as possible. CONSTITUTION: A rotary frame 20 supported in a freely rotatable manner with respect to a housing 10 is provided with a work rail 25 and a side guide 26 for guiding and supporting a cylinder block in a specified work setting position, together with a clamper 40 capable of moving between the released position and the clamping position, and the housing 10 supporting the rotary frame 20 is provided with an air cylinder 53 for operating the clamper 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work rotating device for changing the posture of a work in a manner in which the work is turned upside down.

[0002]

2. Description of the Related Art For example, in an automobile engine production facility, when the head mounting surface and the oil pan mounting surface of a cylinder block are machined on the same production line, or when a cleaning liquid is sprayed from around the cylinder block for cleaning work. In the case of performing, a work rotating device for changing the posture of the work is installed in a manner that the work is turned upside down. This work rotating device is generally equipped with a rotating frame that rotates about a horizontal axis.The work is carried into the rotating frame, set at a predetermined position, and then the rotating frame is rotated by 180 °. Are changing their attitude.

[0003]

By the way, in the conventional work rotating apparatus, means for setting the work on the rotating frame, specifically, the clamper which moves between the release position and the clamp position, and the clamper An actuator for moving the actuator is provided together with the rotary frame, and the pipes extending from the actuator are supported by a guide plate attached to the rotary frame, so that the size of the entire device is increased carelessly. I was invited. Further, in the conventional work rotating device in which the actuator is provided on the rotating frame, the rotating frame has to be rotated together with the actuator, and the size of the drive motor for rotating the rotating frame is increased. I could not avoid the inconvenience. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a work rotation device that can achieve miniaturization as much as possible.

[0004]

Therefore, in the work rotating apparatus according to the present invention, guide supporting means for guiding the work and supporting it at a predetermined work set position is provided on a rotating frame rotatably supported by a base frame. While a clamper that can move between a release position and a clamp position is provided, a clamper operating actuator for operating the clamper is provided on a base frame that supports a rotating frame.

[0005]

According to the above construction, since the clamper operating actuator does not move with the rotation operation of the rotary frame, it is not necessary to attach the guide plate to the rotary frame to support the pipe extending from the actuator. Further, according to the above configuration, since it is not necessary to rotate the actuator together with the rotating frame, it is possible to prevent the drive motor for rotating the rotating frame from becoming large.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing an embodiment. 1 to 8 show an example in which the work rotating device according to the present invention is applied to a washing machine for performing a washing operation by injecting a washing liquid from the periphery of a cylinder block in a production facility of an automobile engine. There is.

As shown in FIGS. 1 to 4, a cleaning machine (work rotating device) 1 is provided with a housing 10 as a base frame installed on a floor and a rotating frame 20 for accommodating and holding a cylinder block W as a work. The housing 10 accommodates the rotating frame 20 therein and supports the rotating frame 20 rotatably about an axis extending in the horizontal direction.

Here, as conceptually shown in FIG.
A work-carrying-in conveyor Ci is arranged on the right side of the cleaning machine 1 in the drawing, while a work-carrying-out conveyor Co is arranged on the left side of the cleaning machine 1 in the drawing, and the axes of the rotary frame 20 are both It extends along the direction connecting the conveyors Ci and Co. In FIGS. 2 and 3, the right side in the figures is the work loading side, while the left side in the figures is the work unloading side.

As shown in FIGS. 1 to 3, the rotary frame 20 includes a pair of ring-shaped frames 21i and 21o which face each other and are separated from each other in the loading / unloading direction of the cylinder block W.
It is constructed by being integrally connected by four frame shafts 22, 22 ..., and is rotatably supported with respect to the housing 10 via a total of eight rollers R, R ... Has been done.

A ring-shaped driven sprocket 23 is fixed to the side of the ring-shaped frame 21o of the rotary frame 20, while a drive motor 30 installed in the housing 10 has a drive-side sprocket 31. Is provided, and the rotary frame 20 is driven and rotated based on the operation of the drive motor 30 via the chain 32 wound around the driven sprocket 23 and the drive sprocket 31.

A stopper block 24 is fixedly mounted on the driven sprocket 23, while the housing 1
0 is provided with a pair of stoppers Sa and Sb, and the rotary frame 20 has a stopper block 24 as shown in FIG.
From the state of being in contact with one stopper Sa to the state of being in contact with the other stopper Sb by rotating clockwise.
It can rotate over an angle range of 180 °, and the posture of the rotating frame 20 is detected by a sensor (not shown) installed near the stoppers Sa and Sb.

Guide support means for guiding the cylinder block W carried in and out of the rotary frame 20 to the pair of ring-shaped frames 21i, 21o of the rotary frame 20 and for supporting it at a predetermined work set position. As a pair, a pair of work rails 25, 25 and a pair of side guides 26, 26 are attached.

The work rails 25, 25 are located in the lower region of the cylinder block W which is carried into the rotary frame 20 from the work carry-in conveyor Ci (see FIG. 5), and the side guides 26, 26 are mounted on the rotary frame 20. The work rails 25 and the side guides 26 are located on the left and right sides of the cylinder block W to be carried in. Both of them are rod-shaped members, specifically, round rods with a diameter of 14 mm. Cylinder block W
Extend along the carry-in / carry-out direction.

Further, the ring-shaped frames 21i and 21o of the rotary frame 20 are respectively provided with clampers 4
0, 40 are provided, and these clampers 40 include a clamp arm 41 extending in the horizontal direction and a pair of slide rods 42 provided at the ends of the clamp arm 41.
42 and the rotary frame 20 carries in a predetermined work.
Unloading position, that is, work rail 2 as shown in FIG.
5, 25 are located below, and side guides 26, 26
Is supported by the ring-shaped frames 21i and 21o in a manner that it can move in the vertical direction when it is positioned on the left and right.

Further, the clamper 40 is provided between a release position for allowing the cylinder block W to be carried in and out of the rotary frame 20 and a clamp position for holding the cylinder block W in cooperation with the work rails 25, 25. The pair of slide rods 4 are provided so as to move.
By the springs 43, 43 attached to 2, 42,
The downward direction in FIG. 1, that is, the clamp arm 41 is urged toward the work rails 25, 25.

On the other hand, inside the housing 10, clamper operating means 50, 50 for operating the clampers 40, 40 provided on the rotary frame 20 are installed, and these clamper operating means 50 are provided for each clamper 40. Of the pushers 51,
Bracket 52 provided with 51 and this bracket 5
2, an air cylinder 53 as a clamper operating actuator for moving the pushers 51, 51 up and down via the two.

With the rotary frame 20 occupied at the predetermined work loading / unloading position, the clamper operating means 50 is operated.
Based on the operation of the air cylinder 53, the pair of pushers 51, 51 are moved upward to abut the slide rods 42, 42 of the clamper 40.
The clamper 40 moves toward the release position by raising the pressures 2 and 42 against the urging force of the springs 43 and 43. On the other hand, when the pair of pushers 51, 51 are lowered to separate from the slide rods 42, 42 of the clamper 40 based on the operation of the air cylinder 53 in the clamper operating means 50, the clamper 40 is based on the urging force of the springs 43, 43. Will move downward from the release position. The clamper operating means 5
The movement status of the pushers 51, 51 at 0 is detected by a pair of sensors installed near the bracket 52.

Inside the housing 10, an area on the work loading side with respect to the rotary frame 20 and the rotary frame 2 are provided.
Fixed work rails 25a and 25a and a fixed side guide 26 are provided in the work unloading side region with respect to 0, respectively.
a and 26 a are attached to the fixed work rail 25 a and the fixed side guide 26 a with respect to the work rail 25 and the side guide 26 in a state where the rotary frame 20 is occupied at a predetermined work loading / unloading position. It is installed so as to extend coaxially.

Further, a nozzle box 60T and nozzle boxes 60S, 60S connected to a cleaning liquid supply means (not shown) are respectively provided in an upper area of the rotary frame 20 and left and right lateral areas of the rotary frame 20 inside the housing 10. A plurality of injection nozzles 61, 61 are installed in these nozzle boxes 60T and 60S so as to inject the cleaning liquid onto the cylinder block W set on the rotary frame 20 in a manner of facing the rotary frame 20 from the surroundings. ... is provided. Note that the cleaning liquid after cleaning the cylinder block W is discharged from the bottom plate 11 of the housing 10 having the inclination through the trough 12 toward a cleaning liquid tank (not shown).

The panel 10I on the work loading side of the housing 10 is provided with a work loading port 10i, and the loading port 13 is moved up and down by an air cylinder to open and close the work loading port 10i.
On the other hand, I is provided, and a work carry-in port 10o is formed in the panel 10O on the work carry-out side in the housing 10, and a carry-out door that is moved up and down by an air cylinder to open and close the work carry-out port 10o. 13O is provided, and the open / closed states of the carry-out exit door 13I and the carry-out exit door 13O are detected by a pair of sensors (not shown) provided in the housing 10. Reference numeral 14 in FIGS. And 15
Is a lid for closing an inspection opening provided in a main part of the housing 10, and a reference numeral 16 in FIG.
Is a cover for covering the drive motor 30 and the drive side sprocket 31 provided in the housing 10.

When the cylinder block W is cleaned in the cleaning machine 1 having the above-described structure, first, as shown in FIGS. 5 and 6, the rotary frame 20 is placed at a predetermined work loading / unloading position. In addition, in a state where the clamper operating means 50 occupies the clamper 40 in the release position, the cylinder block W is loaded into the rotary frame 20 from the work loading conveyor Ci by a push-in / push-out mechanism (not shown) operated by an air cylinder. To do.

At this time, the cylinder block W passes through the work carry-in port 10i of the housing 10 while being guided by the fixed work rail 25a and the fixed side guide 26a,
The cylinder block W is guided by the work rails 25 and the side guides 26 of the rotary frame 20 and fed to a predetermined work set position on the rotary frame 20, that is, a substantially intermediate position between the pair of ring-shaped frames 21i and 21o. The arrival of the work set position is detected by a work carry-in detection sensor (not shown) provided on the rotary frame 20.

Then, the air cylinder 53 of the clamper operating means 50 is operated to push the pushers 51, 5 as shown in FIG.
1 is moved downward, the clamper 40 moves downward based on the urging force of the springs 43, 43, and the cylinder block W is sandwiched between the pair of work rails 25, 25 and the clamp arm 41. It will be held in the work set position.

Here, the clamper 40 is provided so as to be movable up and down, and is configured to hold the cylinder block W by the urging force of the springs 43, 43.
Within the upper and lower stroke ranges of the clamp arm 41, it is possible to hold a plurality of types of cylinder blocks having different height dimensions without requiring a setup change.

After the cylinder block W is held on the rotary frame 20, the injection nozzles 61, 61 in each nozzle box 60T and each nozzle box 60S, 60S.
From, the injection of the cleaning liquid toward the cylinder block W is started, and the rotating frame 20 starts rotating based on the operation of the drive motor 30 from the state shown in FIG. 7 to the state shown in FIG. To do.

As described above, the rotary frame 20 is shown in FIG.
As shown in FIG.
Starts rotating clockwise from the state where it is in contact with
Continuing to rotate over an angle range of 180 ° until it comes into contact with the other stopper Sb, the cleaning liquid from the injection nozzles 61, 61 ... Continues to be jetted.

Here, the rotary frame 20 is constructed by connecting a pair of ring-shaped frames 21i, 21o by four frame shafts 22, 22, ... And, the work provided on the ring-shaped frames 21i, 21o. Since the rail 25 and the side guide 26 are both formed of a rod-shaped member (a round rod having a diameter of 14 mm), the cylinder block W set on the rotating frame 20 is
Almost the entire area of the outer surface is exposed to the outside.

As a result, the entire surface of the cylinder block W is effectively cleaned by the cleaning liquid sprayed from the spray nozzles 61, 61 ... The injection nozzle 6
While the cleaning liquid is being sprayed from 1, 61 ..., the carry-in door 13I and the carry-out door 13O shown in FIGS. 2 and 3 are both closed so that the cleaning liquid does not splash outside. Needless to say.

As shown in FIG.
At the time of rotation, the injection of the cleaning liquid from each of the injection nozzles 61, 61 ... Is stopped, and then the rotating frame 2
0 is in the opposite direction for the purpose of draining the cylinder block W
It is rotated 180 °, and as shown in FIG. 1, the stopper block 24 abuts on one stopper Sa and is stopped in a state where it is occupied at a predetermined work loading / unloading position.

Next, the air cylinder 53 of the clamper operating means 50 is operated to push the pushers 51, 5 as shown in FIG.
1 is lifted and the clamper 40 is moved up to the release position to release the holding state of the cylinder block W with respect to the rotating frame 20, and then the cylinder block W is rotated by the not-shown push-in / push-out mechanism. It is sent from the frame 20 to the work unloading conveyor Co.

At this time, the cylinder block W includes the work rail 25 and the side guide 26 of the rotary frame 20.
And fixed work rail 25a and fixed side guide 2
While being guided by 6a, it is transferred to the work unloading conveyor Co through the work unloading port 10o of the housing 10 and then carried to the next work process by the work unloading conveyor Co.

By the way, the washing machine 1 in the above-described embodiment is configured so that the posture of the cylinder block W carried into the washing machine 1 and the posture of the cylinder block W carried out from the washing machine 1 are the same. Cage, rotating frame 20
Although the clamper operating means 50 is installed only on the bottom of the housing 10 in order to operate the clamper 40 when the workpiece is occupied at the predetermined work loading / unloading position, the clamper operating means 50 is also provided above the rotary frame 20. By installing the clamper 40, the clamper 40 can be operated even when the rotary frame 20 is inverted by 180 °.

That is, in the above-described embodiment, the example in which the present invention is applied to the washing machine is shown, but the work rotating device according to the present invention is only a device for performing various works on a rotating work. Instead, it can be effectively configured as a so-called reversing machine for reversing the top and bottom of the work in the middle of the work line.

[0034]

As described above in detail, in the work rotating apparatus according to the present invention, the rotating frame is provided with the guide supporting means and the clamper, while the base frame is provided with the clamper operating actuator for operating the clamper. Therefore, the clamper operating actuator does not move along with the rotating operation of the rotary frame, and it is not necessary to attach the guide plate for supporting the pipe extending from the actuator to the rotary frame. Further, since it is not necessary to rotate the actuator together with the rotating frame, upsizing of the drive motor for rotating the rotating frame can be prevented in advance. Therefore, according to the work rotating device of the present invention, It is possible to achieve miniaturization as much as possible.

[Brief description of drawings]

FIG. 1 is a sectional front view showing a main part of a work rotating device according to the present invention in a cutaway manner.

FIG. 2 is a cross-sectional side view showing a main part of the work rotating device in a cutaway manner.

FIG. 3 is a cross-sectional plan view showing a main part of the work rotating device in a cutaway manner.

FIG. 4 is a front external view of a work rotating device.

FIG. 5 is a conceptual side view showing an operation mode of the work rotating device.

FIG. 6 is a conceptual front view showing an operation mode of the work rotating device.

FIG. 7 is a conceptual front view showing an operation mode of the work rotating device.

FIG. 8 is a conceptual front view showing an operation mode of the work rotating device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Washing machine (work rotating device), 10 ... Housing (base frame), 20 ... Rotating frame, 25 ... Work rail (guide supporting means), 26 ... Side guide (guide supporting means), 40 ... Clamper, 53 ... Air Cylinder (actuator for operating clamper), 61 ... Injection nozzle, W ... Cylinder block (work).

Claims (3)

[Claims] 1. A rotating frame rotatably supported by a base frame fixedly installed on a floor so as to be rotatable about an axis extending in the horizontal direction, and guides a work carried in and out of the rotary frame, and A guide supporting means provided on the rotating frame in a manner of supporting the rotating frame at a predetermined work set position, a release position for permitting loading and unloading of the work with respect to the rotating frame, and fixing the work supported at the predetermined work set position. The clamper provided on the rotary frame in a manner of moving between the clamp position and the clamp position, and when the rotary frame is occupied at a predetermined work loading / unloading position, engages the clamper and moves the clamper to the releasing position. And a clamper operating actuator provided on the base frame in such a manner that Work rotating device according to claim. 2. The work rotating device according to claim 1, wherein the guide supporting means is constituted by a plurality of rod-shaped members extending along a loading / unloading direction of the work with respect to the rotary frame. 3. The work rotating device according to claim 1, further comprising an injection nozzle for injecting the cleaning liquid onto the work set on the rotating frame in a manner of facing the rotating frame from the surroundings.