JPH06104485B2 - Sorting device for conveyed objects - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transported object sorting apparatus for appropriately sorting various types of objects such as bottles, cans, and packages when they are transported. .

(Prior Art) Conventionally, as a device for selecting bottles and the like, for example, a device described in West German Laid-Open Publication DE3631879A1 is known. In this device, in order to obtain high responsiveness, the motor side and the brush segment side are appropriately coupled by coupling.

(Problems to be Solved by the Invention) However, according to the above-described conventional technology, when one rotation is performed on the motor side, the rotation of the brush segment is accurately performed due to a failure of a transmission mechanism such as a belt or a coupling failure. There is a problem that the brush segment does not stop at a predetermined stop position without stopping, but stops at a position where a bottle or the like is pressed, and unexpected selection is performed.

The present invention has been made in view of the problems of the conventional sorting apparatus for conveyed objects, and an object thereof is to detect when an object pressing means for pressing an object and moving it in a required direction is stopped at an improper position. Therefore, it is an object of the present invention to provide a sorting apparatus for a transported object, which is capable of taking measures such as maintenance and the like, and reducing the situation where the transported object undergoes unexpected sorting.

(Means for Solving the Problem) In the present invention, a drive source, a primary side shaft rotated by the drive source, an object pressing means for pressing an object to be conveyed and moving the object in a required direction, and the object pressing means Coupled to the secondary side shaft for rotating the object pressing means, coupling means for coupling the secondary side shaft and the primary side shaft when required, and a predetermined rotation of the secondary side from the coupling means. Predetermined rotation detection means, secondary side rotation stop means for stopping the rotation of the secondary side based on the detection output of the predetermined rotation detection means, and stop of rotation of the secondary side by the secondary side rotation stop means A rotation start position detecting hand for detecting whether or not the object pressing means is stopped at a position corresponding to the predetermined rotation when required after the rotation of the object pressing means is stopped after the operation. To constitute a sorting device of the conveyance object allowed provided and.

(Operation) According to the above configuration, the secondary side rotation stopping means stops the rotation state on the secondary side. Then, there is a reaction time from this stop, and the object pressing means is stopped.After that, whether the object pressing means is stopped at a corresponding position by a predetermined rotation when required such as when an instruction to start rotation is given. It is possible to detect that it has been detected and stopped at an improper position.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of an embodiment of the present invention, and FIG. 2 is a perspective view of a main portion of FIG. In these drawings, reference numeral 1 denotes a motor as a drive source, which is connected to a primary shaft 2 by a timing gear 4 and a timing belt 5 which are fixed to each other by a nut 3 or the like. The timing belt 5 is connected to a timing gear (not shown) provided on the shaft of the motor 1. The primary side shaft 2 is connected to the secondary side shaft 6 by a coupling means 7 including a secondary side shaft 6 and a vacuum clutch brake or the like. The secondary shaft 6 includes a nut 8, a brush position detecting cam 9 and a nut 10 from the coupling means 7 side.
A, predetermined rotation detection cam 18, nut 10B, brush body 11,
The nut 12 is inserted, and the brush position detecting cam 9, the predetermined rotation detecting cam 18 and the brush body 11 are fixed by the nuts 8, 10A, 10B and 12. A groove is formed in the hole into which the shaft of the timing gear 4, the brush position detecting cam 9, the predetermined rotation detecting cam 18, and the brush body 11 is inserted so that the primary shaft 2 and the secondary shaft 6 correspond to each other. Positioning is performed by fitting with the ridges formed on the outer peripheral portion.

The brush body 11 is composed of an annular main body 13 and a bristle body 14 planted on the outer periphery of the main body 13. The bristle body 14 has a bristle length of one round as shown in FIGS. It changes as the temperature changes, and is in a so-called eccentric state. Of course, the hair body 14 may be implanted in a part of the periphery with a predetermined length. Further, the brush position detecting cam 9 has a disc shape, and has a notch 15 in which a part thereof is notched. A proximity switch 16 is provided at a position corresponding to the cutout portion 15 of the housing of the coupling means 7. Further, the predetermined rotation detecting cam 18 also has a disc shape, and a cutout portion 18A in which a part thereof is cut out is provided.
Have. A proximity switch 19 is provided at a position corresponding to the cutout portion 18A of the housing of the coupling means 7. The notch portion 18A of the notch portion 15 is positioned away from the notch portion 18A by a distance corresponding to a rotation angle corresponding to a reaction time from when the notch portion 18A is detected by the proximity switch 19 and the rotation is instructed to when the rotation is actually stopped. ing. In the normal state, when the brush body 11 is completely stopped, the shortest (or no) portion of the hairs of the hair body 14 is located on the object side such as a bottle, and the brush position detecting cam 9 The brush body 11 and the brush position detecting cam 9 are positioned so that the notch 15 is located at the tip of the proximity switch 7.

The output of the proximity switch 19 is given to the coupling means 7 to be used for stopping the secondary shaft 6 and the control unit 20.
The output of the proximity switch 16 is supplied to the control unit.
Has been given to 20. Further, the control unit 20 is provided with a start signal from a sensor that detects that an object has arrived at a position where the bush 11 should start rotating so as to press the object. This start signal is also given to the coupling means 7. The control unit 20 has a gate that allows the output of the proximity switch 16 to pass when the start signal indicates "start of rotation", for example (L level), and a gate that is set by the output of this gate and reset by the output of the proximity switch 19. With a built-in flip-flop, the output of this flip-flop is given to the LED 21, and
It is sent to the outside and used as needed to stop the motor 1.

In the transported object sorting apparatus configured as described above, the coupling means 7 receives the start signal from the sensor for detecting the arrival of the transported object (not shown), and the primary side shaft 2 and the secondary side shaft 6 are connected to each other. After a required time (the time when the object arrives at the front surface of the brush body 11 from the position of the sensor of the start signal), the coupling is released by the output signal of the proximity switch 19 and the secondary shaft 6 is suddenly moved. Stop. Primary shaft 2
Is placed in an idling state because the motor 1 is constantly rotating. When the vacuum clutch brake is used as the coupling means 7 as described above, the responsiveness at the start and end of the coupling (the sudden stop of the secondary side shaft 6) becomes extremely good despite the high speed rotation. .

In such a configuration, the timing belt 5 is not loose, the coupling means 7 is normal (for example, the vacuum pressure is predetermined), and the brush body 11 is not loosely attached.
If all are normal, as shown in the timing chart of FIG. 3, the output of the proximity sensor 16 detects the notch 15 at the timing (L level) at which the start signal instructs rotation start. To the L level. In the control unit 20, even if the gate is opened by this, the flip-flop is not set, and the alarm signal which is its output remains at the L level. However, if any of the above parts becomes abnormal, the output of the proximity switch 19 causes the coupling means 7 to stop the rotation of the secondary side shaft 6, and after a predetermined reaction time, the proximity switch 16 is notched. It deviates from the part 15. Then, as shown in the right part of FIG. 3, at the timing (L level) when the start signal instructs the rotation start, the output indicating that the notch 15 cannot be detected from the proximity switch 16 is H level. It is output as a level. As a result, the control unit 20
Inside, when the gate is opened, the flip-flop is set by the output of H level, the alarm output (alarm signal) becomes active, the LED 21 is turned on, and the operator is notified. Moreover, appropriate measures can be taken using the alarm output. Since the flip-flop is reset every time the proximity sensor 19 detects the cutout portion 18A (each time the output becomes L level), the alarm signal is supplied from the start signal until the output becomes L level. It becomes active during the period, and this is repeated.

In the above embodiment, the alignment of the brush body 11, the brush position detecting cam 9 and the predetermined rotation detecting cam 18 is performed by the ridge portion. For example, as shown in FIG. (Concave) portions 41A, 41B on one surface (on the side of the brush body 11) of the cam 9 (predetermined rotation detecting cam 18)
May be provided at a plurality of positions, and a concave (convex) portion corresponding to the corresponding surface of the main body 13 of the brush body 11 may be provided so that positioning can be performed with one touch by fitting.

Further, the coupling means 7 is not limited to the vacuum clutch brake, but may be, for example, an electromagnetic clutch or the like.
The brush body 11 is not limited to the brush and may be an eccentric elastic body as long as it presses an object.
Further, the proximity switches 16 and 19 are not limited to those of the embodiment, and an optical sensor, a magnetic sensor, or the like can be appropriately changed as necessary. Furthermore, the level of each signal and the configuration inside the control unit 20 are merely examples. Further, when the start signal of the embodiment is given, it is the timing when it is possible to detect that the object pressing means is stopped at the corresponding position due to the predetermined rotation when considering up to continuous operation. It goes without saying that if it is stopped before the start signal is given, it can be detected at that time as well.

〔The invention's effect〕

As described above, according to the present invention, the object pressing means must rotate and stop at the corresponding position by the predetermined rotation when required after the secondary side of the coupling means is stopped by the secondary side stopping means. The position is detected by the stop position detecting means, and appropriate measures such as maintenance can be taken.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a perspective view of an essential part of the present invention, FIG. 3 is a time chart for explaining the operation of the embodiment of the present invention, and FIG. [Fig. 4] is a perspective view of a main part of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Motor 2 ... Primary shaft 4 ... Timing gear 5 ... Timing belt 6 ... Secondary shaft 7 ... Coupling means 9 ... Brush position detection cam 11 ... Brush body 13 ... Main body 14 ... Hair body 15, 18A ... Notch Parts 16, 19 ... Proximity switch 18 ... Predetermined rotation detection cam 20 ... Control unit 21 ... LED

Claims (3)

[Claims] 1. A drive source, a primary side shaft rotated by the drive source, an object pressing means for pressing an object to be conveyed and moving the object in a required direction, and the object pressing means coupled to the object pressing means. A secondary side shaft to be rotated, a coupling means for connecting the secondary side shaft and the primary side shaft when required, a predetermined rotation detecting means for detecting a predetermined rotation of the secondary side from the coupling means, Secondary side rotation stop means for performing an operation of stopping the rotation of the secondary side based on the detection output of the rotation detection means, and after the secondary side rotation stop means stops the rotation of the secondary side, A rotation start position detecting means for detecting whether or not the object pressing means is stopped at a position corresponding to the predetermined rotation when required after the rotation of the object pressing means is stopped. Carrying Sorting device for sent objects. 2. The object pressing means is a brush body composed of an annular body coupled to the secondary side shaft and a hair body implanted on the outer peripheral surface of the annular body, and the rotation start position detecting means is 2. The apparatus for sorting conveyed objects according to claim 1, wherein the sensor is a sensor for detecting a mark portion provided at a predetermined position of the brush body at a predetermined position. 3. The sorting of conveyed objects according to claim 2, wherein the mark portion is the cutout portion of the cam body which is joined to the brush body and is partially cut out, and the sensor is a proximity sensor. apparatus.