JPH01313208A - Steel pipe taking-out device - Google Patents

Abstract

PURPOSE:To make the structure simple and the takeout easy by forming a downwardly inclined part on the storage shelf taking-out end, providing a stopper capable of raising and lowering, oscillating the taking-out arm upward to form a V-shaped part together with the inclined part, thereby supporting a pipe, and then oscillating the taking-out arm downward to move the pipe onto a carrying line. CONSTITUTION:A taking-out arm 6 is oscillated upward so that a V-shape is formed together with an inclined part 5 and made to support a steel pipe 3a, and a stopper 7 is protruded on the placing surface of a storage shelf 2 by a driving cylinder 11, whereby the steel pipe 3a is separated from the following steel pipes 3. Then, the taking-out arm 6 is oscillated downward by a driving cylinder 9 to match with a carrying line 4. Hence, the steel pipe 3a is rollingly moved on the taking-out arm 6 and placed on the carrying line 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a steel pipe take-out device that sequentially takes out a plurality of steel pipes placed in parallel on a storage shelf and sends them to a conveyance line.

[Prior art]

Conventionally, this type of steel pipe take-out device has been used to take out steel pipes of various diameters lined up on a storage shelf from the ends on the conveyor line side. It is generally known that this is done by having a stopper protrude and separating the two steel pipes from each other.

Here, a plurality of stoppers are provided so that they can be protruded according to the diameter of the steel pipe placed f2 on the storage shelf.

In addition, when activating the stopper, the worker visually confirms the position of the stopper and the diameter of the steel pipe, and then manually pushes out the stopper that corresponds to the steel pipe that has reached the end of the transfer line. Alternatively, in order to achieve unmanned operation, the diameters of the steel pipes lined up on the storage shelves are checked in advance and the pipes are made to stick out under N/C control.

[Problems to be solved by this invention]

However, when there are many types of steel pipes, it is necessary for the worker to look down from above and determine the protrusion position of the stopper. In addition, when there are many types of steel pipes, operation becomes complicated, etc.
The work of protruding the stopper cannot be easily performed by manual operation.

Note that, instead of manually protruding the stopper, a device in which the order of the steel pipes is determined and the protrusion is determined by N/C control allows the stopper to be protruded easily, but the device itself is expensive.

This invention was devised in view of the above-mentioned circumstances, and its purpose is to make it possible to easily eject a steel pipe stopper even when there are many types of steel pipes, and to reduce the cost of the device itself. The goal is to provide equipment.

[Means to solve the problem]

According to the present invention, the steel pipe take-out device includes: a downwardly inclined part formed at the end of the storage shelf on the transport line side; a take-out arm pivotally attached to this inclined part; It consists of a stopper that can freely appear and retract from the inclined part onto the steel plate mounting surface. Also, in order to prevent the take-out arm from swinging from the position where it forms a figure-7 groove with the inclined part of the storage shelf to the delivery position to the conveyance line, the stopper is kept in the storage position while the take-out arm is in the delivery position. It is configured to protrude above the steel pipe mounting surface of the shelf.

Then, along with the action of the swinging of the takeout arm and the protrusion and retraction of the stopper, the steel pipe at the end of the conveyance line is locked in the 7-shaped groove formed by the takeout arm and the slope of the storage shelf. To easily distinguish and take out a steel pipe on a storage shelf and a steel pipe on a storage shelf. Furthermore, the device has a simple structure consisting of a take-out arm and a stopper, and can be provided at a low cost.

(Example) The steel pipe take-out device of the present invention will be described below with reference to an example illustrating the same.

A device 1 for taking out a plurality of steel pipes 3 placed in parallel on the storage shelf 2 (see Fig. 1) is formed at the end of the storage shelf 2 on the transport line 4 side, which is slightly inclined downward to the transport line 4 side. the inclined part 5 of the storage shelf 2, the take-out arm 6 pivotally attached to the inclined part 5, and
From steel pipe! ! The stopper 7 is provided with a stopper 7 that can freely appear on the field surface.

The take-out arm 6 swings from the position where it forms a V-shaped groove 8 with the inclined part 5 of the storage shelf 2 to the delivery position to the conveyance line 4, and the stopper 7 is set to the delivery position of the take-out arm 6. It is configured to protrude above the steel pipe mounting surface of the storage shelf 2 in this state.

Note that the take-out arm 6 in this embodiment is configured to move the rod 9a of the drive cylinder 9 back and forth by a transmission plate 10 whose one end is pivoted to the rod 9a of the drive cylinder 9 installed below the storage shelf 2. It is configured to oscillate when transmitted. The entire length of the take-out arm 6 is long enough to transport the steel pipes 3 from the inclined portion 5 of the storage shelf 2 onto the roller conveyor that is the transport line 4.

Further, the stopper 7 is provided on the rod lla of the driving cylinder 11 installed below the storage shelf 2, which is the axis of the stopper 7.

When the steel pipes 3 are sequentially taken out and sent to the conveyance line 4 by the taking-out device 1 having such a configuration, first the first
As shown in the figure, the steel pipe 3a at the side end of the conveyance line 4 is locked in a V-shaped groove 8 formed by the take-out arm 6 and the inclined part 5 of the storage shelf 2. The steel pipe 3 is automatically locked in the V-shaped groove 8 because the storage shelf 2 is slightly inclined downward toward the conveyance line 4 side.

Next, as shown in FIG. 2, the actuation of the driving cylinder 11 causes the stone bar 7 to protrude from the steel pipe mounting surface of the storage shelf 2.
The steel pipe 3a is sorted to the take-out arm 6 on the II feed line 4 side.

Thereafter, as shown in FIG. 3, the driving cylinder 9 is operated to swing the take-out arm 6 to the delivery position to the conveyance line 4 by means of the transmission plate 10. As a result, the steel pipe 3a rolls on the upper surface of the take-out arm 6 and the conveyance line 4
It is sent onto a roller conveyor.

Next, when the steel pipe 3a is sent to the conveyance line 4, the take-out arm 6 swings to a position where it forms a V-shaped groove 8 with the inclined part 5 of the storage shelf 2, as shown in FIG.

At the same time, the stopper 7 is retracted from the steel pipe mounting surface of the storage shelf 2 by the actuation of the driving cylinder 11. As a result, the new steel pipe 3 moves to the 7-shaped groove 8 and locks therein.

In this way, by the swinging of the take-out arm 6 and the protrusion of the stopper 7, the steel pipe 3 is sequentially locked in the V-shaped groove 8 and delivered from the seven-shaped groove 8 to the conveying line 4. Then, the steel pipe 3 is taken out.

In this embodiment, steel pipes of the same diameter are taken out, but in the present invention, even when W class steel pipes with different diameters are lined up, each can be reliably taken out.

In this case, in order to reliably take out only the steel pipe 3a at the side end of the transport line 4, the angles between the take-out arm 6 and the inclined portion 5 of the storage shelf 2 and the horizontal line are made appropriate. It is also necessary to make the protrusion length and position of the stopper 7 appropriate. In other words, the protruding position of the stopper must be located slightly above the center of the steel pipe that is engaged in the figure-7 groove.

Next, the relationship between the angle between the take-out arm 6 and the inclined portion 5 of the storage shelf 2 and the horizontal line, and the protruding length of the stopper 7 will be described.

When different types of steel pipes with different diameters are lined up (), the relationship between the angle between the slope 5 of the take-out arm 6 and storage m2 and the horizontal line and the protrusion length of the stopper 7 must be made appropriate, as described below. Problems will occur.

■ As shown in Fig. 5, if the angle β between the take-out arm 6 and the horizontal line is made too large compared to the angle α between the inclined part 5 of the storage shelf 2 and the horizontal line, the steel pipe 3a will be pushed up and fall over the take-out arm 6. do.

■ As shown in FIG. 6, if the angle α between the inclined part 5 of the storage shelf 2 and the horizontal line is too large compared to the angle β between the take-out arm 6 and the horizontal line, the steel pipe 3 will climb over the stomper 7 and the steel pipe 3a fall with it.

As a countermeasure against ■, take out the take-out arm 6 in Fig. 5.
By calculating the value of the distance AP' between the intersection of both slopes with the inclined part 5 of the storage shelf 2 and the point of contact with the slope of the steel pipe 3a (take-out arm 6), and checking the length of the take-out arm 6, good. As for the countermeasure for (2), it is sufficient to calculate the AP', find the center position 0 (0, 0□) of the steel pipe 3, and check the relationship with the protrusion length of the stopper 7.

Here, a method for calculating the value of the distance AP' between the intersection of both slopes of the take-out arm 6 and the inclined part 5 of the storage shelf 2 and the contact point with the slope of the steel pipe 3a (take-out arm 6) is shown in FIG. 1, 5in(θ・α)r' AP=Sin(,7+β) mTan(e+β)
""-")m""')'5in(/?-
3J']"""2] 5in (θ α) Tanθ= 7 (W Cotβ−W'Sinα)
--Equations (3) and () hold true. Here, w', w
is the steel pipe 3a, the weight of the steel pipe 3, α and β are the inclination angles of the slopes,
r' and r are the steel pipe 3a, the radius of the steel pipe 3, and θ is the steel pipe center 0.
The angle of inclination is 0'.

And φ' of steel pipe 3a = 76.3 mm, t'-
2.8mm.

Length = I m, W' = 5.08 kg, and steel pipe 3's φ' - 268.4 mm, t' = 9.0
mm, length = 6m, W' = 344.8 kg, and the calculations for α-20° and 30@ result in the following table.

In this way, in equation (3), if β becomes large, θ becomes small, and if β becomes small, θ becomes large. Furthermore, if θ becomes small, the value of AP' becomes large.

The results are shown in FIGS. 8 to 17.

Up to now, the value of AP' has been shown to be determined using a formula, but a method for determining θ and determining the value of AP' graphically will be described below. (See Figure 18) First, draw parallel lines r and r' along the slopes of α and β, and then draw a line DS of θ=50° determined from an arbitrary point D.

Next, draw a line parallel to the AC line from ES = r + r', S, and 0
If you find the intersection with a line that passes through ' and is at a distance r from AB, you will find the center of the steel pipe 3a.

Then, if we draw a line with an inclination of θ from 0゛, it will be parallel to AC and r
The point of intersection with a line at a distance of ' is 0, and by drawing a line perpendicular to AC from 0, AP' can be found.

〔Effect of the invention〕

The steel pipe take-out device of the present invention includes a downwardly inclined part formed at the end of the storage shelf on the transport line side, a take-out arm pivotally attached to the inclined part, and a take-out arm that is pivotally attached to the inclined part of the storage shelf. It consists of a stopper that can freely move in and out on the steel pipe mounting surface. In addition, in order to swing the take-out arm from a position where it forms a 7-shaped groove with the slope of the storage shelf to a delivery position to the conveyance line, the stopper is placed in the storage position while the take-out arm is in the delivery position. It is characterized by being configured to protrude above the steel pipe mounting surface of the shelf.

According to this configuration, the end of the steel pipe on the storage shelf on the transport line side can always be kept locked in the 7-shaped groove formed by the take-out arm and the inclined part of the storage shelf. In addition, by the action of the swinging of the arm and the protrusion and retraction of the stopper accompanying this swinging, the steel pipes locked in the figure-7 groove are separated from other steel pipes on the storage shelf, and the steel pipes locked in the figure-7 groove only can be taken out.

Therefore, the steel pipes on the storage shelf at the end of the transport line that should be taken out are always locked in the figure-7 groove, so even if different types of steel pipes are lined up, multiple stoppers can be attached to the steel pipes as in the past. There is no need for troublesome work such as protruding them together, and this can be done easily and reliably.

Moreover, since it has a simple structure consisting of a take-out arm and a stopper, and only the swinging of the take-out arm and the protrusion and retraction of the stopper are controlled, the take-out device can be provided at a low cost.

[Brief explanation of the drawing]

FIGS. 1 and 2 are front views showing the steel pipe take-out device of the present invention, FIGS. 3 to 4 are process diagrams showing the steel pipe take-out operation, and FIGS. 5 to 18 are drawings of the take-out arm and the storage shelf. FIG. 3 is a schematic diagram showing the relationship between the angle between the inclined portion and the horizontal line and the protrusion length of the stopper. ■... Retrieval device, 2... Storage shelf, 3... Steel pipe,
4... Conveyance line, 5... Inclined part, 6... Take-out arm, 7... Stopper, 8... Figure-7 groove, 9...
... Drive cylinder, 9a... Rod, 10... Transmission plate, 11... Drive cylinder, lla... Rod. 37 4th section 1/9a Figure 5 Figure 6 Figure 7 Figure 6 Figure 10 A Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17

Claims (1)

[Scope of Claims] A steel pipe take-out device that sequentially takes out a plurality of steel pipes placed in parallel on a storage shelf that is slightly inclined downward on the side of a transport line and sends them to the transport line, comprising: A sloped part formed on the side end of the conveyance line further downward, a take-out arm pivotally attached to the sloped part, and a stopper that can freely protrude and retract from the sloped part of the storage shelf onto the steel pipe mounting surface. The take-out arm is configured to swing from a position where it forms a V-shaped groove with the slope of the storage shelf to a delivery position to the conveyance line, and the stopper is configured to move the take-out arm from the delivery position to the delivery position. A steel pipe take-out device characterized in that it is configured to protrude above the steel pipe mounting surface of the storage shelf.