JPS5812165B2 - Separation and counting device for long objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a separating/counting device for long objects such as rods, and in particular to a supply conveyor on which the rods and the like are placed laterally on a loading means, and a device for separating and counting long objects such as rods, etc. The present invention relates to a device consisting of an electronic counter provided with an electronic counter and means for separating bars etc. from each other before they are counted.

Such devices are used in particular in the metal industry, and especially after cold shearing in rolling mills for producing iron for sale, to form segmented packages each containing a predetermined number of bars.

Since these bars are transported on a conveyor on continuous or discontinuous loading means, it is clearly necessary to separate them from each other before counting them.

However, the separation and counting devices currently on the market have technical drawbacks.

In particular, mechanical systems extending over the entire length of the bars to be counted from time to time are required, and these are expensive.

The present invention has as its main object to eliminate these disadvantages, and for this purpose the separating device consists of at least one movable wheel rotating about an axis perpendicular to the direction of movement of the conveyor, and furthermore the horizontal floor plate is connected to the said separating device. located adjacent to the discharge end of the conveyor, said wheels being engageable around the periphery of the first bar of the loading means for accelerating the first bar relative to other bars in the direction of travel of said conveyor; The object is the above-mentioned type of device which is particularly characterized by the following points.

The frames can thus be automatically separated from each other and then easily counted by known equipment means such as photocells.

According to a preferred embodiment of the invention, the laterally mounted wheels are supported by arms rotatably mounted on an axis parallel to the direction of movement of the conveyor, over which the bars are moved as they pass. The wheel can be raised.

Furthermore, because of this lifting movement, as soon as one bar is engaged by the wheel, the next bar cannot be picked up.

And separation of the rods is constantly ensured.

Preferably, the device of the invention may further comprise an adjustable stop for restricting the lowest position of the wheel and a damping jack for braking its lifting movement.

As the wheel rises under the action of the rod, the rod slides on the floor plate creating a resistance that slows down its movement sufficiently to prevent it from accelerating suddenly.

That is, the frame does not slide on the floorboard and has a translation speed greater than the traveling speed of the conveyor.
It must be rotated at a speed of 5 peed.

Furthermore, for this purpose, if the bar has an approximately circular cross-section, an elastic coating with a high coefficient of friction is provided for the bar around the wheels and on the floor plate.

On the one hand, in the case of non-rotatable bars, the wheels are provided with a coating of high coefficient of friction against the bars, and on the other hand, the wheels are provided with a coating that has a high coefficient of friction against the bars, and on the other hand, such that the bars can slide effortlessly over the floorboards due to the bias of the wheels. The floorboard is provided with a coating that has as low a coefficient of friction as possible against the bars.

An embodiment of the present invention will be described below with reference to the drawings, but the present invention is not limited thereto.

The illustrated device consists, inter alia, of a conveyor designated by the reference numeral 1, the direction of movement of which is indicated by the arrow F.

On the upper surface of this conveyor, the long objects to be counted, in this case circular cross-section frames 2, such as reinforcing bars for concrete, are arranged laterally.

More specifically, the frame is not spread out uniformly, but is placed on a continuous placement means as indicated by the reference numeral 3.

In the particular example shown here, the conveyor 1 consists of an assembly of parallel endless chains supported longitudinally by beams 5 and supported at each end by sprockets 6.7.

Sprocket 6 rotates freely about its axis 8, while sprocket 7 is integral with a common shaft 9 provided in bearing 10.

This shaft 9 is rotated by a motor provided at its end, thereby passing the chain 4 through the sprocket 7.
The upper side of is driven translationally in the direction of arrow F.

Furthermore, the upper surface of the conveyor 1 extends on the discharge side as far as a horizontal floor plate 12 on which the bars transported by the chain 4 are received at the end of their travel.

As can be clearly seen, for example, in FIG. 2, this floor plate 12 is actually formed from separate sections located on each side of the transfer chain.

Furthermore, a separating device is provided to separate the boxes from each other on the floor plate 12 before they are counted.

This counting operation here takes place in a completely known manner, namely:
This is accomplished by an electronic device that essentially includes a transmitting device 13 and a receiving device 14 arranged in relation to the transmitting device.

Said transmitting device 13 may be, for example, a light projector or a photoelectric cell in conjunction with a pulse counter.

Of course, this latter photocell is preselected so that the device is stopped when a predetermined number of bars have been counted.

According to the invention, the separating device essentially comprises a movable wheel 15 arranged on the floor plate 12 and on one side of the conveyor.

This wheel 15 is rotated by a motor 17 provided on a rotating arm 18 about an axis perpendicular to the moving direction F of the conveyor in the direction indicated by an arrow f.

3 and 4, the arm 18 is rotated about an axis parallel to the moving direction of the conveyor by the shaft 19, which is integrally formed with the shaft 19 and rotatably supported by a bearing 20. It is clearly shown from the figure.

The wheel 15 can thus be raised as the rod passes due to the pivoting movement of the arm 18 about its axis, as will be explained below.

Strip 2 extending longer than the resting point of the above floorboard
The wheel 15 between the two floor sections in the form of
The lower part of is positioned.

An overhang C, the role of which will be explained in more detail later, is present in FIG. 2 between the end 22 of the strip 21 and the stationary end 23 of the horizontal floor plate.

The lowest limit of the wheel 15 is limited by an adjustable stop 24 which is supported by support means 25 and which supports an extension 26 of the pivot arm.

This stop 24, which in the illustrated example is formed by a simple screw, is adjusted in a unique manner as shown in FIG. 6, depending on the diameter of the rods to be counted.

At the lower position of the wheel 15, the distance A between the plane zz and the axis of the rod which is tangent to the wheel 15 is the same plane zz
and the end 22 of the strip 21 is actually required to be greater than the distance B.

Furthermore, the wheel 15 of the separating device is provided around it with an elastic material 27 which is wear-resistant and has a high coefficient of friction with respect to the rod 2 which it drives.

The stationary part of the floorboard, as well as the strip 21, are covered with a material having the same properties as that covering the wheel 20.

Further, the rotating arm 18 supporting the wheel 15 is
It is affected by the operation of the damping jack 28, the role of which will be explained in more detail later.

The body of this jack 28 is hinged at 29 to the support means 25, while its rod 30 is hinged at 31 with respect to the extension 26 of the arm.

Next, the operation of the above-mentioned separation/counting device will be described. When driven by the drive motor 11, the loading means 3 for the rods 2 transferred by the chain 4 of the conveyor 1 is moved to the wheel 15 of the separation device by the arrow F. move slowly in the direction of

This wheel 15 itself rotates in the direction indicated by arrow f and is driven by a motor 17.

Furthermore, this wheel 15 is arranged so that when the chain 4 has traveled a distance equal to the diameter of the rod 2, it rotates on the plane of the strip 21 between the point where a rod of the same diameter touches the lower position of the wheel 15 and said strip end 22. The wheel 15 rotates at such a speed that it travels at least a distance of .

More specifically, the rotational torque provided by the motor 17 of the wheel 15 is calculated and the weight of this bar and the floor plate 1
The wheel 15 transmits an acceleration to the rod rotated by the wheel 15 that is at least equal to the acceleration allowed by the friction coefficient of 2.21.

When the first bar of the mounting means 3 comes into contact with the wheel 15, the wheel 15, which rotates at the speed determined above, tends to rapidly drive said frame, since at this time the wheel 15 is rotating. It is in.

However, the advancement of the rod causes the arm 18 to pivot about the axis 19, thereby causing the wheel 15 to rise.

The rod 30 of the damping jack 28 is then attracted, and the rod 30 exerts a resistance to lock the wheel 15, or at least loosens it sufficiently so that while the rod 2 is sliding on the floor plate 12 or 21 it is rotates and does not accelerate too suddenly.

The accelerations then transmitted to the (rotating) wheel and (rotating and translating) rod assembly are as described above,
The frame is moved parallel to itself by rotating over the floor plate 12 and strip 21 to its tips 22 and 23.

The rods are counted as they pass between the transmitter 13 and the receiver 14, and on the discharge side, as shown in FIG. 1, fall due to gravity into a pile of rods.

It should be noted that the rod mounting means or the rod 2 itself is not necessarily juxtaposed exactly to the drive shaft of the sprocket 7 and therefore to the leading edge 23 of the floorboard 12.

It is precisely for this reason that the protruding portion C is provided between the end 23 and the end 22 of the strip 21.

This protrusion C is approximately equal to the maximum allowable length of the rods, thus ensuring that all rods are ejected to the ejection side without the addition of a qualifier.

Further, the wheel 15 is connected to the arm 1 centered on the shaft 19.
The fact that it rises due to the rotation of 8 ensures that as soon as one bar is engaged the next bar will not be worn out.

Since the distance A is greater than the distance B, it does not change until the moment the engaged rod leaves the end 22 of the strip 21.

In other words, as the engaged rod leaves the strip 21, the wheel 15 is affected by gravity and the damping jack due to the advancement of the chain 4, while the next following rod just reaches and touches the wheel 15 in the lower position of the wheel. By the action of 29, it is lowered again to its lower position.

The wheel 15 is repeatedly locked and accelerated again to engage this new bar until the desired number of bars for the package has been counted.

With the device according to the invention, therefore, the rods can always be accurately separated from each other and counted accurately without any risk of miscalculation.

When a preselected number of bars has reached a counter associated with the receiver 14 and the last bar has passed under the device 13-14, said counter is reset and ready to start a new count, and the motor 11 .17, thus stopping the wheels 15 and the conveyor chain 4.

However, the reaction time (r
The action times) are defined to allow the last bar counted to cover the distance between the device 13.14 and the space end 22.

This last counted rod also joins the stack of rods formed on the discharge side, while the nuclear device is ready for a new working cycle as soon as the package of rods thus formed is discharged.

It is clear that such a device could easily be adapted to count rods with cross-sectional shapes that do not permit rotation.

In this case, on the contrary, the strip 21 as well as the stationary part of the floor plate 12 are covered with a material that has as low a coefficient of friction as possible with respect to the rods to be counted.

Acceleration wheel 1 usually used to rotate round rods
5 is used in this case to slide the square rod over the strip 21.

However, by doing this there is a risk that the end of the square rod opposite the wheel will have little or no drive, so that the rod will remain on the floor plate 12 rather than falling to the discharge side.

The angular bars are then accurately separated from each other in the counting device, however manual or automatic action will probably be required to cause the last bar counted to fall from the floorboard.

[Brief explanation of the drawing]

The figures show embodiments of the invention, and FIG.
2 is a schematic front view of a bar separation and counting device embodying the principles of the present invention; FIG. 2 is a reduced plan view of the device of FIG. 1; and FIG. 4 is a sectional view taken along line IV--IV in FIG. 3, and FIG. 5 is a sectional view taken along line V-V in FIG. 3. 6 is a sectional view taken along the line VI-VI in FIG. 3. 1...Conveyor, 2...Bar, 3...
... Loading means, 4... Endless chain, 5...
...Beam, 6...Sprocket, 7...
... Sprocket, 8... Axis, 9...
...Common shaft, 10...Bearing, 1
1... Drive motor, 12... Floor plate, 1
3...Transmitter, 14...Receiver, 15
...Movable wheel, 16...Axle, 17
...Motor, 18...Rotating arm, 1
9...Shaft, 20...Bearing, 21...Strip, 22...End, 23...End sound 24... ...stopper,
25...Support means, 26...Extension part,
27: Elastic material, 28: Damping jack, 29: Fulcrum, 30: Rod, 31: Fulcrum.

Claims (1)

[Claims] 1. A supply conveyor in which a bar is placed on a traverse, and a counting means provided adjacent to the downstream end of the conveyor;
a separating device for separating said bars from each other by accelerating one bar with respect to the other bar before said bars are counted; The conveyor comprises at least one wheel rotatable about an axis perpendicular to the direction of movement, means for rotating the wheel, and a plurality of plates adjacent to the downstream end of the conveyor; At least one of the plates is fixed with respect to the wheel and is provided horizontally below the wheel and extends a greater distance than the other plates in the direction of movement of the conveyor, and the wheel has a high coefficient of friction with respect to the bar. furthermore, this wheel engages only one end of the first incoming bar at its periphery and separates said bars before said bars are counted. an elongated object separation and counting device rotated with respect to said conveyor at a speed sufficient to accelerate said first bar with respect to the other bars across said one plate in the direction of movement of said conveyor. 2. The wheel is supported by an arm rotatably mounted around an axis parallel to the direction of movement of the conveyor, and the long object separating and counting device further urges the wheel in the direction of the bar. Apparatus according to claim 1, comprising means for. 3. The device of claim 2 further comprising an adjustable stopper for defining the lower limit position of the wheel and a damping jack for braking upward movement. 4. The device of claim 1, wherein said one plate is provided with a coating having a high coefficient of friction with respect to said bar.