JPH0673785B2 - Posture control device for square members - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a device for rotating a long rectangular member on a conveyor to perform posture control.

(Prior Art) When assembling a house unit, as shown in FIG.
Joints on the two side faces 1b, 1c at both ends of the pillar 1 (long rectangular member)
Weld 2 and 3 to these joints 2 and 3, respectively, girder beam 4 and girder beam 5.
Are connected. Further, as shown in FIG. 2, a hole 6 is formed in the other side surface 1a (specific side surface) of the pillar 1, and a wall material or the like is attached through this hole 6. Also, at both ends of the pillar 1,
An upper end plate and a lower end plate for reinforcing the pillar 1 and vertically joining the pillars are welded. Due to the difference between the hole 6 and the upper end plate and the lower end plate, the column 1 is vertically asymmetric. There is a relative positional relationship between the side surface 1a where the hole 6 is formed and the two side surfaces 1b and 1c to which the joints 2 and 3 are to be welded. The above relative positional relationship differs depending on the installation position of the pillar 1 (for example, the A position and the B position in FIG. 1). That is, the joint 2 is located on the right side of the side surface 1a in which the hole 6 is formed at the position A.
The joint 2 is welded to the side surface 1b on the left side at the position B. In addition, for the side surface 1a where the hole 6 is formed, the joint 3
Is welded to the side surface 1c opposite to the side surface 1a. Below, joint 2
Is welded to the side surface 1b, and the joint 3 is welded to the side surface 1c.

Conventionally, the pillar 1 is successively conveyed to the welding process in the same direction,
The welding worker manually welded the joints 2 and 3 to the two side faces 1b and 1c after the column 1 was manually rolled and turned in accordance with the installation positions A and B. For this reason, it was difficult to confirm whether the installation position was A or B, and the workability was poor and there were many mistakes.

(Object of the Invention) The present invention has been made based on the above circumstances, and an object thereof is an attitude control device for a rectangular member, which can accurately control the attitude of a long rectangular member supplied in a fixed direction to a desired direction. To provide.

(Summary of the Invention) The summary of the present invention resides in an attitude control device for a rectangular member having the following configuration.

(A) A long rectangular member with a specific side facing up is placed on the upper surface and conveyed in a direction orthogonal to the longitudinal direction, and one of the two side surfaces adjacent to the specific side surface and the side surface facing the specific side surface are processed. A conveyor that selectively stops when the prismatic members reach a first position and a second position that are in close proximity to each other in order to do so.

(B) A first blade that is rotatably supported about a shaft located below the upper surface of the conveyor and that appears and retracts with respect to the upper surface of the conveyor at the first position.

(C) A second blade that is rotatably supported around an axis that is coaxial with the axis of the first blade, and that protrudes and retracts with respect to the upper surface of the conveyor at the second position.

(Structure of the Invention) An embodiment of the present invention will be described below with reference to FIGS. 3 to 8. The illustrated apparatus is for controlling the posture of a pillar 1 (long rectangular member) which is a constituent material of a house unit. In the figure, 10 is a conveyor, and this conveyor 10 has two belts 11 which are spaced in parallel with each other. And
Put the pillar 1 over the two belts 11
The pillar 1 is conveyed in a direction orthogonal to the longitudinal direction.

Two limit switches 15 and 16 are installed in the conveyor 10. As shown in Fig. 4, limit switches
The actuators 15a and 16a of 15, 16 are the upper surface of the conveyor 10 (belt 1
11 of the upper part). Limit switch 15
When the pillar 1 reaches the first position shown by the imaginary line M, the operator 15a is tilted by the pillar 1 so that the pillar 1 can be detected. Further, the limit switch 16 can detect the pillar 1 by tilting the actuator 16a by the pillar 1 when the pillar 1 reaches the second position indicated by the imaginary line N. Based on the detection signals from the limit switches 15 and 16, a sequence control circuit (not shown) stops the conveyor 10 and drives air cylinders 23 and 33, which will be described later.

A shaft 20 is rotatably supported in the conveyor 10. The shaft 20 is arranged below the upper surface of the conveyor 10. A tubular body 21 is fixed to both ends of the shaft 20, and a first blade 22 is attached to each outer peripheral surface of the tubular body 21. The blade 22 of FIG. 1 is rotated by an air cylinder 23 as an actuator. More specifically, as shown in FIG. 5, one end of a link 24 is fixed to one of the two cylinders 21, and the other end of the link 24 has a piston rod portion of the air cylinder 23. The tip of 25 is rotatably connected. Then, by driving the air cylinder 23, the link 24 and the cylindrical body 2
1 and the shaft 20 are rotated, and the two first blades 22 fixed to both ends of the shaft 20 are simultaneously rotated so that the first blades 22 appear and disappear on the upper surface of the conveyor 10 at the first position M. There is.

A sleeve 30 is rotatably supported on the outer periphery of the shaft 20. A tubular body 31 is fixed to both ends of the sleeve 30, and second blades 32 are attached to the outer peripheral surface of the tubular body 31, respectively. The second blade 32 is rotated by an air cylinder 33 as an actuator. More specifically, as shown in FIG. 6, one end of a link 34 is fixed to one tubular body 31 of the two housings 31, and the other end of the link 34 has a piston rod portion 35 of the air cylinder 33. The tip of is rotatably connected. Then, by driving the air cylinder 33, the link 34 and the tubular body 31
And the sleeve 30 is rotated, and the two second blades 32 fixed to both ends of the sleeve 30 are simultaneously rotated to generate the second
At the position N, the projecting and retracting is performed on the upper surface of the conveyor 10.

Next, the pillars 1 which are supplied in a fixed direction with the side surface 1a (specific side surface) having the holes 6 facing upward are machined by alternately controlling the postures in order to install the pillars 1 at the positions A and B shown in FIG. The operation of the above device will be described by taking the case of performing as an example.

First, the case where the attitude of the pillar 1 to be installed at the position A in FIG. 1 is controlled will be described in detail. The pillar 1 is conveyed by the conveyor 10 with the side surface 1a having the hole 6 for attaching the wall material described above facing upward, for example. Then, when the pillar 1 reaches the first position M shown in FIG. 4, the limit switch 15 detects and the conveyor 10 is stopped. In this state, as shown in FIG. 7 (a), the blades 22 and 32 are tilted substantially horizontally and the conveyor 1
It is located below the upper surface of 0. Next, as shown in FIG. 7 (b), the air cylinder 33 is driven to rotate the second blade 32 in the clockwise direction to raise it at an inclination angle of about 45 degrees. Next, as shown in FIG. 7 (c), the air cylinder 23 is driven to rotate the first blade 22 in the counterclockwise direction to raise it at an inclination angle of about 45 degrees. Lift and rotate counterclockwise about 45 degrees. In the state shown in FIG. 7 (c), the side surface 1a of the pillar 1 supported by both blades 22 and 32.
Is facing diagonally upward to the left, and the side faces 1b,
Both 1c are facing diagonally downward. Next, the chuck 1 (not shown) grabs the pillar 1 as it is from above, conveys it to a predetermined place, and welds and fixes the joints 2 and 3 to the side surfaces 1b and 1c to be welded obliquely below. . At this time, since the side surface 1a in which the hole 6 for mounting the wall material is formed faces diagonally upward to the left, the welding positions of the joints 2 and 3 can be easily determined. On the other hand, the attitude control device drives the air cylinders 23 and 33 to return the blades 22 and 32 to the original horizontal state after the pillar 1 is chucked and removed.

Next, the pillar 1 to be installed at the position B in FIG. 1 is conveyed by the conveyor 10 with the side surface 1a facing upward, and when the pillar 1 reaches the second position N shown in FIG. Detect and stop conveyor 10. In this state, as shown in FIG. 8 (a), the blades 22 and 32 are tilted substantially horizontally and the conveyor 1
It is located below the upper surface of 0. Next, as shown in FIG. 8 (b), the air cylinder 23 is driven to rotate the first blade 22 in the counterclockwise direction to raise it at an inclination angle of about 45 degrees.
Next, as shown in FIG. 8 (c), the air cylinder 33 is driven to rotate the second blade 32 in the clockwise direction to raise it at an inclination angle of about 45 degrees. Lift and rotate clockwise about 45 degrees. In the state shown in FIG. 8 (c), the specific surface 1a of the pillar 1 supported by both blades 22 and 32
Is facing diagonally upward to the right, and the side faces 1b,
Both 1c are facing diagonally downward. Next, the chuck 1 (not shown) grabs the pillar 1 as it is from above, conveys it to a predetermined place, and welds and fixes the joints 2 and 3 to the side surfaces 1b and 1c to be welded obliquely below. . At this time, since the side surface 1a in which the hole 6 for attaching the wall material is formed faces diagonally right upward, the welding position of the joints 2 and 3 can be easily determined. On the other hand, the posture control device grabs the pillar 1 from above after the pillar 1 is chucked and removed, and conveys it to a predetermined welding place. Then, the air cylinders 23 and 33 are driven to return the blades 22 and 32 to the original horizontal state.

As described above, the columns 1 that have been conveyed should be selectively rotated by 45 degrees in the clockwise direction and 45 degrees in the counterclockwise direction to automatically control the posture and weld the joints 2 and 3 together. Since the side surfaces 1b and 1c are always directed obliquely downward, the worker can accurately weld the joints 2 and 3 to the two side surfaces 1b and 1c in the next welding process.

In the above device, the second blade 32 is further rotated counterclockwise from the state shown in FIG.
As shown in FIG. 7 (d), the column 1 can be finally rotated 90 degrees counterclockwise.

Further, from the state of FIG. 8 (c), the first blade 22 is further rotated in the clockwise direction to bring it down, and as shown in FIG. 8 (d), the pillar 1 is finally rotated 90 ° in the clockwise direction. It can also be rotated once. From the state shown in FIG. 8 (d), the second blade 32
And the conveyor 10 is re-driven to return the pillar 1 to the second position N as shown in FIG. 8 (a), and then the state shown in FIG. 8 (c) is passed through FIG. 8 (b). Finally, the pillar 1 can be rotated by 135 degrees, and further can be finally rotated by 180 degrees in the state of FIG. 8 (d). In the same manner, the posture of the column 1 can be controlled at the turning angle of every 45 degrees.

The present invention is not limited to the above-mentioned embodiment and various modes are possible. For example, in the above embodiment, the blades are reciprocally rotated between two positions, which are a substantially horizontal inverted state and a standing state of about 45 degrees, but by raising these blades at an arbitrary angle,
The posture of the pillar can be controlled at an arbitrary angle.

(Effects of the Invention) As described above, according to the present invention, by rotating the first blade and the second blade, it is possible to accurately obtain a long rectangular member that is supplied in a fixed direction. The posture can be controlled in the direction.

[Brief description of drawings]

FIG. 1 is a plan view of a house unit, FIG. 2 is a perspective view of a pillar used in the house unit, FIG. 3 is a plan view of an apparatus constituting an embodiment of the present invention, and FIGS. In Fig. 3
Sectional views along line IV-IV, V-V, and VI-VI, FIGS. 7 (a) to (d), and FIGS. It is a figure explaining. 1 …… Pillar (long rectangular member), 10 …… Conveyor, 22 ……
1st blade, 32 ... 2nd blade

Claims (1)

[Claims] (A) A long rectangular member having a specific side facing upward is placed on an upper surface and conveyed in a direction orthogonal to a longitudinal direction thereof, and one of two side surfaces adjacent to the specific side surface and the specific side surface. A conveyor that selectively stops when the rectangular members reach the first position and the second position that are close to each other for processing the side surfaces that face each other; and (b) an axis that is located below the upper surface of the conveyor. A first blade that is rotatably supported about the center and that protrudes and retracts with respect to the upper surface of the conveyor at the first position; and (c) rotates about an axis that is coaxial with the axis of the first blade. An attitude control device for a prismatic member, comprising: a second blade that is freely supported and that protrudes and retracts with respect to the upper surface of the conveyor at the second position.