JP2003320408A - Apparatus and method for turning square steel bar - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To turn a square steel bar without changing a position to an installation part before and after revolution. <P>SOLUTION: The right turn arm 28 is positioned at the right side across a pass for transporting a square steel bar 12 by a roller conveyer 14, and oscillated from an evacuation position to a work position, and the square steel bar 12 is lifted up by supporting with a support part 46. Next, the left turn arm 36 is positioned at the left side across the transporting pass and oscillated from the evacuation position to the work position, and after the square steel bar 12, which is supported by the right turn arm 28, is supported by a support part 48, the right turn arm 28 is got back to the evacuation position. At this condition, the square steel bar 12 is installed to the roller conveyer 14 with revolution position by getting the left turn arm 36 back to the evacuation position. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turning method and device for turning a square bar at every predetermined angle.

[0002]

2. Description of the Related Art When a steel material having a quadrangular cross section (hereinafter referred to as a square bar) is subjected to a required processing, the square bar needs to be turned by 90 degrees, for example. Conventionally, the square bar is placed below and above a roller table on which the square bar is placed. A turning device has been proposed which uses an L-shaped turning lever that moves up and down between and. In this turning device, the square timber mounted on the central portion of the roller table is once moved to a predetermined position in the width direction and lifted by raising the turning lever toward the square timber. Next, the turning bar is turned by 90 degrees to turn the square bar by 90 degrees, and then the turning lever is lowered to place the turned square bar on the center portion of the roller table.

Further, a turning device using an endless chain that circulates in a direction intersecting the longitudinal direction of a square bar has been proposed. In this device, the turning device moves up and down between a lower part and an upper part of a roller table. The turning device is lifted with respect to the square pieces that are arranged so as to be possible and are placed on the table, so that the square pieces are placed and lifted on the endless chain. Then, in this state, the endless chain is run to turn the square bar, and then the turning device is lowered to place the turned square bar on the roller table.

[0004]

However, in the turning device using the turning lever, when turning the square bar by the turning lever, the mounting position of the square bar with respect to the roller table moves in the width direction. In order to make the position the same after turning, the width-adjusting means for the square bar is indispensable, and the number of parts increases. Moreover, it is pointed out that a large number of actuating sources such as a width-shifting means, a turning lever elevating means and a turning means are required, which makes the structure complicated and increases the cost. Also,
Since the square bar moves in the width direction during turning, the width of the roller table has to be set wide and there is a problem that the installation space of the device becomes large.

On the other hand, in the turning device using the endless chain, it is possible to turn the square bar without changing the mounting position of the square bar on the roller table. It is pointed out that the mechanism for moving and the mechanism for driving the endless chain to be complicated are complicated and the manufacturing cost is increased.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems inherent in the prior art, and has been proposed to solve this problem. An object of the present invention is to provide a method and apparatus for turning a square bar that can rotate the square bar with a simple structure without changing the position.

[0007]

In order to solve the above-mentioned problems and achieve the intended purpose, the method for turning a square bar according to the present invention is a method for turning a square bar placed on a placing part. Then, by swinging one of the turning arms, which has one side as a swing fulcrum with the placing section interposed therebetween, from the retracted position below the placing section toward the operating position above the one, The square bar received by the turning arm is lifted from the placing section and turned by a predetermined angle, and the other turning arm having the other side as a swinging fulcrum with the placing section sandwiched is moved from the retracted position below the placing section. By swinging toward the upper operating position, the square bar lifted by the one turning arm is supported from below, and after swinging the one turning arm from the operating position to the retracted position,
By swinging the other turning arm from the operating position to the retracted position, the square bar supported by the other turning arm is
It is characterized in that it is adapted to be rotated in the same direction as the turning direction at the time of being lifted by one of the turning arms and lowered to be placed on the placing part.

In order to achieve the intended purpose, a device for turning a square timber according to another invention of the present application is a device for turning a square timber placed on a placing part, and sandwiches the placing part. A swinging fulcrum is set on one side, and one of the actuating sources swings the receiving portion supporting the square bar so as to move between a retracted position below the mounting portion and an operating position above. A swinging fulcrum is set on the other side of the turning arm and the placing portion, and the receiving portion that supports the timber is moved so as to move between a retracted position below the placing portion and an operating position above. The other turning arm that is swung by the actuation source of, and with respect to the square bar that is supported by the receiving part of the one turning arm that is swung from the retracted position to the operating position and that is lifted from the mounting part,
The receiving portion of the other turning arm swinging from the retracted position to the operating position is set so as to support the other surface adjacent to the surface of the square bar supported by the receiving portion of the one turning arm. And

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a method and apparatus for turning a square bar according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments.

1 and 2 show a schematic structure of a turning device capable of carrying out a turning method according to the present invention.
This turning device 10 is a long rectangular member having a rectangular cross section, for example.
The (square steel material) 12 is arranged at an appropriate position of a roller conveyor 14 as a mounting portion for conveying along the longitudinal direction thereof. In the embodiment, a plurality of turning devices 10 are arranged at predetermined intervals in the transport direction, and by operating all the turning devices 10 integrally, the long square bar 12 can be turned every 90 degrees. There is.

In the turning device 10, the conveying direction of the timber 12 (longitudinal direction of the timber 12) is set in a device frame 16 facing downwardly from the conveying path of the timber 12 by the roller conveyor 14.
A pair of rotating shafts 18, which are spaced apart from each other by a predetermined distance on the left and right.
20 is rotatably arranged. Left and right rotation axis 18,
20 extends in parallel along the transport direction at symmetrical positions on both the left and right sides of the transport path. One end of the right first lever 22 is integrally rotatably disposed on the right rotation shaft 18 located on the right side (one side) in FIG. 1, and the right first lever 22 is opened so as to face below the conveyance path. One end of the right connecting rod 24 is rotatably supported at the end. Further, a right support shaft (swing fulcrum) 26 parallel to the rotating shaft 18 is arranged on the device frame 16 at a position separated upward from the position where the right rotating shaft 18 is arranged. The right turning arm (one turning arm) 28 is rotatably provided at one end thereof. The other end of the right connecting rod 24 is rotatably supported near the open end of the right turning arm 28 extending toward the transport path.

A left turning shaft 20 located on the left side in FIG.
In the same manner as the right rotation shaft 18, one end of the left first lever 30 is integrally rotatably disposed, and the left first rod 30 is connected to the left end of the open end of the left first lever 30 below the conveying path. One end of 32 is rotatably supported. Further, the left support shaft (oscillation) is arranged on the device frame 16 at a position separated upward from the position where the left rotation shaft 20 is disposed, in a position parallel to the rotation shaft 20 and symmetrical to the right support shaft 26 across the transport path. A fulcrum 34) is provided, and a left turning arm (the other turning arm) 36 is attached to the left support shaft 34.
Has one end rotatably disposed. Then, in the vicinity of the open end portion of the left turning arm 36 that extends toward the transport path,
The other end of the left connecting rod 32 is rotatably supported. The left and right turning arms 28 and 36 are, as shown in FIG.
They are set apart from each other in the longitudinal direction of the square members 12 so as not to interfere with each other.

One end of the right second lever 38 and one end of the left second lever 40 are disposed on the right rotation shaft 18 and the left rotation shaft 20 so as to rotate integrally with each other. Right hydraulic cylinder (one actuation source) 42 at the open end of 38
The piston rod 42a of the left hydraulic cylinder (the other actuation source) 44 is rotatably connected to the open end of the second left lever 40. That is, both hydraulic cylinders 42, 44
By rotating the left and right rotary shafts 18 and 20 forward and reverse in a predetermined angular range, the left and right rotary shafts 18 and 20 are rotated forward and backward by the left and right first levers 22 and 30 and the left and right connecting rods 24 and 32. The turning arms 28 and 36 are swung so that the receiving portions 46 and 48, which will be described later, move between a retracted position below the transport path of the roller conveyor 14 and an operating position above.

The left and right turning arms 28, 36 have a substantially V-shaped receiving portion 4 facing the lower side of the conveying path at the retracted position.
6, 48 are formed, and the squares 12 are formed by the receiving portions 46, 48.
Is configured to be supported and can be lifted from the transport path. The left and right receiving portions 46, 48 are composed of inner receiving surfaces 46a, 48a that are close to the corresponding left and right support shafts 26, 34 and outer receiving surfaces 46b, 48b that are separated from each other. Angles on the inner side (the side on which the square member 12 is supported) formed by both the inner and outer receiving surfaces 48a, 48b of 46a, 46b are set to 90 degrees or more. The left and right outer receiving surfaces 46b and 48b support and lower the lower surface of the square bar 12 placed on the roller conveyor 14 when the turning arms 28 and 36 are swung from the retracted position to the operating position. (See FIGS. 4B and 4D). The square bar 12, whose lower surface is supported by the outer receiving surfaces 46b and 48b, has a predetermined angle (smaller than the post-rotation posture) from the pre-rotation posture as the turning arms 28 and 36 swing.
It is set so that it is held in the operating position in a rotated posture. In addition, the outer receiving surfaces 46b and 48b of one of the turning arms 28 and 36 that have been swung from the retracted position to the operating position first.
The outer receiving surfaces 48b, 46b of the other turning arms 36, 28 that are later swung from the retracted position to the operating position with respect to the square bar 12 supported by the roller conveyor 14 and lifted from the roller conveyor 14.
Is set so as to support the other surface of the square bar 12 adjacent to the surface supported by the outer receiving surfaces 46b, 48b of the one turning arm 28, 36.

For example, when the right turning arm 28 is first swung to the operating position, the outer receiving surface 46b of the arm 28 is rotated.
Is lifted with the lower surface of the timber 12 being in contact with and supported by
The outer receiving surface 48b of the left turning arm 36 swinging from the rear to the operating position is the roller conveyor 14 of the square bar 12.
The right side in the posture of being placed on the table is contacted and supported (see FIG. 4C). On the contrary, when the left turning arm 36 is swung to the operating position first, it is lifted with the lower surface of the square bar 12 abutted and supported by the outer receiving surface 48b of the arm 36, and from the rear to the operating position. Swinging right turning arm 28
The outer side receiving surface 46b of the above comes into contact with and supports the left surface of the square bar 12 in the posture of being mounted on the roller conveyor 14.

[0016]

Next, the operation of the turning device according to the embodiment will be described in relation to the turning method. In addition, the square bar 1 placed on the transport path of the roller conveyor 14
2 as shown in FIG. 4 (a), both turning arms 28,
It is assumed that all 36 face the retracted position. Further, as shown in FIG. 4, in the square member 12 placed on the roller conveyor 14, for convenience of explanation, the lower surface is referred to as the first surface, the left surface is referred to as the second surface, and the upper surface is referred to as the third surface and the right surface as the fourth surface. At the same time, a description will be given of a case in which the portion corresponding to the second surface is shaded and the square bar 12 is turned 90 degrees so that the second surface faces upward.

As shown in FIG. 4B, when the right hydraulic cylinder 42 is first urged to rotate the right rotating shaft 18 clockwise in the drawing, the right first lever 22 and the right connecting rod 24 are moved. The right turning arm 28 swings clockwise through the right support shaft 26 toward the operating position via the right supporting shaft 26 as a swing fulcrum. During the swing of the right turning arm 28, the first surface of the square member 12 mounted on the roller conveyor 14 is lifted to the operating position while being mounted and supported on the outer receiving surface 46b of the receiving portion 46. . At this time, the timber 12 is in a posture in which it is turned clockwise by an angle smaller than the posture after the turning as the right turning arm 28 swings.

In this state, as shown in FIG. 4C, when the left hydraulic cylinder 44 is urged to rotate the left rotation shaft 20 counterclockwise in the drawing, the left first lever 30 and the left lever 30 are rotated. The left turning arm 36 swings counterclockwise through the connecting rod 32 toward the operating position with the left support shaft 34 as the swing fulcrum.
When the left turning arm 36 swings to the operating position, the receiving portion 48 of the left turning arm 36 comes into contact with the square member 12 supported by the right turning arm 28 to support the square member 12.
At this time, the fourth surface adjacent to the first surface of the square member 12 supported by the outer receiving surface 46b of the right turning arm 28 is in a state of being supported by the outer receiving surface 48b of the left turning arm 36.

Next, as shown in FIG. 4D, the right hydraulic cylinder 42 is reversely biased to return the right turning arm 28 to the retracted position, so that the square bar 12 receives the receiving portion 48 of the left turning arm 36.
It is held in the working position while being supported only by itself. In this state, the left hydraulic cylinder 44 is reversely biased to move the left turning arm 3
When 6 is returned to the retracted position, the square bar 12 descends with the swinging of the left turning arm 36 while turning in the same clockwise direction as the turning direction at the time of lifting by the right turning arm 28, as shown in FIG.
As shown in (e), the timber 12 is placed on the roller conveyor 14 in such a posture that the fourth surface supported by the outer receiving surface 48b is on the lower side, that is, the second surface is on the upper side.

In this way, the left and right turning arms 28, 36
The square bar 12 can be turned 90 degrees simply by alternately swinging. Moreover, since the position of the square member 12 with respect to the roller conveyor 14 before and after the turning does not change, it is not necessary to widen the width of the roller conveyor 14, and the space can be saved. Left and right turning arm 2
Since only the two hydraulic cylinders 42 and 44 swinging 8 and 36 are used as the operation sources, the structure is simple and the cost can be kept low. Furthermore, the left and right turning arms 2
If the swinging order of 8 and 36 is reversed, the square bar 12 can be turned in the reverse direction.

The present application is not limited to the configuration of the above-described embodiment, and other configurations can be appropriately adopted. For example, the angle formed by each surface of the square bar 12,
Inner and outer receiving surfaces 46a, 46 of the receiving portions 46, 48
In order to prevent the square bar 12 from becoming unstable on the receiving portions 46, 48 when the square bar 12 is lifted by the turning arms 28, 36 in relation to the angle formed by b, 48a, 48b,
As shown in FIG. 5, the inner receiving surfaces 46a and 48a may be provided with protrusions 50 that support surfaces adjacent to the surfaces supported by the outer receiving surfaces 46b and 48b.

In the embodiment, the turning arm is connected to the hydraulic cylinder via a lever or a connecting rod to operate, but a structure may be adopted in which the hydraulic cylinder is directly connected to the turning arm to operate. Further, the operation source is not limited to the hydraulic cylinder, and a motor or other means can be appropriately adopted. Furthermore, in the embodiment, the case where the square pieces are turned on the roller conveyor has been described, but the mounting portion may be a table or the like that does not have the function of conveying the square pieces. Furthermore, in the embodiment, the structure was described in which the square bar is rotated by 90 degrees. However, when the square bar has a pentagonal cross section or more, if the angle formed by the inner and outer receiving surfaces of the receiving part is set according to the angle formed by each surface. It is possible to turn a square bar by a corresponding angle.

[0023]

As described above, according to the method and apparatus for turning a square bar according to the present invention, it is possible to make the position of the square bar with respect to the mounting portion before and after the turning, the same. The required space can be reduced, the device can be downsized, and the space can be effectively used in a factory or the like. Moreover, since the structure is simple in that the pair of turning arms are simply swung, the cost can be kept low.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a turning device according to an embodiment of the present invention.

FIG. 2 is a side view showing a schematic configuration of a turning device according to an embodiment.

FIG. 3 is a main part plan view showing a schematic configuration of a turning device according to an embodiment.

FIG. 4 is an explanatory diagram showing a turning step performed by the turning device according to the embodiment.

FIG. 5 is a front view of relevant parts showing a turning arm of a turning device according to a modification.

[Explanation of symbols]

12 timber 14 Roller conveyor (placement section) 26 Right support shaft (swing fulcrum) 28 Right turning arm (one turning arm) 34 Left support shaft (swing fulcrum) 36 Left turning arm (other turning arm) 42 Right hydraulic cylinder (one operation source) 44 Left hydraulic cylinder (other operating source) 46 Receiver 48 Receiver

Claims (2)

[Claims] 1. A method for turning a square bar (12) mounted on a mounting part (14), wherein one side is a swing fulcrum (26) sandwiching the mounting part (14). By rotating one of the turning arms (28) from the retracted position below the mounting portion (14) toward the upper operating position, the timber (12) received by the one turning arm (28). ) Is lifted from the placing part (14) and turned by a predetermined angle, and the other turning arm (36) having the other side as a swing fulcrum (34) with the placing part (14) interposed is placed on the placing part (14). By swinging from the retracted position below the portion (14) toward the operating position above, the square bar (12) lifted by the one turning arm (28) is supported from below, and the one turning arm (28) is supported. After swinging the arm (28) from the operating position to the retracted position, the other turning arm (36) is swung from the operating position to the retracted position so that the other turning arm (36) is supported. Square timber (12) Timbers methods turning, characterized in that so as to place before the mounting section (14) is lowered while turning in the turning direction in the same direction during lifting by turning arm (28). 2. A device for turning a square bar (12) mounted on a mounting part (14), wherein a rocking fulcrum (26) is set on one side of the mounting part (14). Then, the receiving portion (46) for supporting the square bar (12) is swung by the one operation source (42) so as to move between the retracted position below the placing part (14) and the operating position above. One turn arm
(28) and the rocking fulcrum (34) is set on the other side sandwiching the placing part (14), and the receiving part (48) for supporting the square bar (12) is below the placing part (14). The other turning arm that is swung by the other actuation source (44) to move between the retracted position and the upper actuated position.
(36), and the one turning arm swinging from the retracted position to the operating position
For the square bar (12) supported by the receiving part (46) of (28) and lifted from the mounting part (14), the receiving part (of the other turning arm (36) swung from the retracted position to the operating position ( (48) is adapted to support the other surface adjacent to the surface supported by the receiving portion (46) of one of the turning arms (28) in the timber (12), apparatus.