JPH0338082Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention provides a pair of left and right rotary feeding shafts that suspend and support a grain storage bag formed with a pair of left and right eyelets through the eyelets. A driving device is provided corresponding to each of the left and right rotary feeding shafts to feed the hanging grain storage bag to a predetermined grain filling position by driving each feeding shaft around its axis. The present invention relates to a bag feeding mechanism for a grain bagging device, which is provided with left and right sensors that each detect when a position has been reached, and which stops the driving device based on the sensing operation of each of these sensors.

[Conventional technology]

Conventionally, in the bag dispensing mechanism of this type of grain bagging device, when the left and right sensors installed at a predetermined grain filling position each detect an eyelet, the rotation of the rotary dispensing shaft corresponding to the detected sensor is stopped. (For example, Utility Model Application Publication No. 60-21401).

[The problem that the idea attempts to solve]

However, according to the configuration described in the above publication, when an individual sensor detects an eyelet, the rotary feed shaft always stops, so the sensor corresponding to either the left or right rotary feed shaft may cause a contact error. However, if the other sensor operates normally, the eyelet corresponding to one sensor passes through the grain filling predetermined position and falls off the rotary unwinding shaft because the rotary unwinding shaft does not stop, and the eyelet of the following bag The grain filling stops at a predetermined position due to the sensing action of one of the sensors. Therefore, as shown in FIG. 3, if only the eyelet 2 on one side falls off the rotary feed-out shaft 1, not only grain filling will not be performed, but also the rotary feed-out shafts 1, 1 will not operate again. Even if both switches operate normally, the bag detected by one of the sensors will become the subsequent bag, and the condition in which only the eyelet on one side will fall off the rotary feeding shaft will repeat. I couldn't resolve it.

The purpose of this invention is to add a simple control device to the system so that even if only one sensor makes a contact error, the eyelet on only one side will not fall off from the rotating shaft. The point is to provide what is kept to a minimum.

[Means to solve the problem]

The characteristic configuration of the present invention is that when the subsequent bag is fed out to a predetermined position after the grain filling process, one sensor does not detect and operate even after the time equivalent to reaching the predetermined position after the rotational feeding shaft starts. If the other sensor is activated and only the rotary feed shaft corresponding to the other sensor is stopped, the rotary feed shaft corresponding to the other sensor will not be activated despite the sensing operation of the other sensor. It is equipped with a control device for restarting the device, and its effects are as follows.

[Effect]

In other words, the time required for the bag to be fed from the standby position to the grain filling position can be known in advance from the rotational speed of the rotary feeding shaft, so that only one sensor does not operate and the other sensor operates. However, if the rotary feed-out shaft corresponding to the other sensor stops and the time required for feeding the bag has elapsed, it is determined that one sensor has made a contact error, and the system continues to operate despite the sensing operation of the other sensor. First, restart the rotary feed-out shaft corresponding to this other sensor, remove the bag that caused the contact error from the rotary feed-out shaft without performing the grain filling operation, and then re-feed the subsequent bag. It's ready to come out.

[Effect of idea]

Therefore, it is true that a bag that is fed into a predetermined position due to a sensor contact error cannot contribute to the grain filling operation, but subsequent bags only have one eyelet even though both sensors are operating normally. It is possible to prevent the repetition of the phenomenon in which the material falls off from the rotational delivery shaft, and the influence of contact errors can be suppressed to the necessary minimum.

However, in order to prevent the repetition of the phenomenon where only one eyelet falls off the rotary feed-out shaft, it is possible to stop both rotary feed-out shafts at the same time only when the left and right sensors sense it, but in this case, for example, If the time it takes to reach the grain filling predetermined position is different for the left and right eyelets, both rotary shafts will stop rotating according to the eyelet that arrives later, and when one eyelet passes the grain filling predetermined position, However, in the case of the present invention, the rotation of the rotary feeding shaft is stopped when each sensor senses it, so the bag stops at the predetermined grain filling position, which improves positioning accuracy. Excellent.

〔Example〕

As shown in FIGS. 1 and 2, a grain storage bag 3 provided with a pair of left and right eyelets 2, 2 is suspended and supported from a pair of left and right rotating feed-out shafts 1, 1 through the eyelets 2. Through the fitting engagement between the threaded grooves 1A formed at the tips of the rotary feed-out shafts 1, _{1 and} the eyelets 2, grains are It is designed to be fed out to a predetermined filling position. A grain hopper 5 is provided at this grain filling predetermined position, and a grain discharge port 6 is provided below the shutter 6. This grain discharge port 6 includes a movable discharge port 7 inserted into the opening 3A of the grain storage bag 3, and a swingable discharge port 7 inserted into the opening 3A in advance in conjunction with the downward movement of the movable discharge port 7. A bag opener 8 that can be opened and closed is provided. on the other hand,
In the vicinity of this grain discharge port 6, the movable discharge port 7
a first drive arm 9 connected to the shutter 6; a second drive arm 10 connected to the shutter 6; and an opening 3.
Slider 11 of fastener 18 provided at A
A rotary chain 14 is provided in which a first operating arm 19, a second operating arm 12, and a third operating arm 13 are interlocked and connected to each other to open and close the shutter 6 and to raise and lower the movable discharge port 7. , and the closing operation of the slider 11 is performed at predetermined timing, so that grain storage is automatically carried out.

Above each of the rotary feed-out shafts 1, 1, a cantilever-shaped lifting prevention member 15 is provided along the rotary feed-out shafts 1, 1 to prevent abnormal fitting between the thread groove 1A and the eyelet 2. The bag 3 is held down from above so that the bag 3 can be smoothly fed out by the rotational feeding shafts 1, 1.

A sensor 16 is provided at the tip of the floating prevention members 15, 15 to detect when the left and right eyelets 2, 2 have reached a predetermined grain filling position.
6 is composed of a limit switch LSI and a swing type actuating piece 17 for actuating the contactor of this limit switch LSI, and this actuating piece 17 is brought into contact with the upper edge of the bag to perform a sensing operation.

If the actuating piece 17 corresponding to one rotating shaft 1 does not detect the upper edge of the bag 3, when the subsequent bag 3' is fed out to a predetermined position, the rotating shaft 1 reaches the predetermined position after starting. A control device 4 is provided which restarts the other rotary feeding shaft 1 corresponding to the other operating piece 17 even if the other operating piece 17 has detected the bag 3 after a time corresponding to . There is.

As shown in FIGS. 3 and 4, when the rotary chain 14 reaches the standby position after the grain filling operation, the control device 4 activates the limit switch LS2 to start the left and right rotary feeding shafts 1, 1 starting relay. R
2, and relays R4 _L and R4 _R operate sequentially, starting relays R3 _R and R3 _R for left and right motors M _R and M _L.
is activated. These motors M _R and M _L are connected to a normally closed limit switch LS installed at a predetermined position for grain filling.
The circuit is opened and stopped by the operation of 1 _R and LS1 _L.
However, even though the timers T _L and _TR are activated at the same time as the motors M _R and M _L are started, and the target bag 3 reaches the predetermined grain filling position, there is a lapse of time, for example, as shown in the figure. limit switch
If LS1 _L is not activated, relay R1 _R is activated by starting the timer _TR after a predetermined period of time has elapsed.
The motor M _R , which is stopped by the operation of the limit switch LS1 _R , is restarted by the closing operation of the relay contact R1 _Ra .

As mentioned above, the limit switch is activated after the specified time has elapsed.
If either LS1 _L or LS1 _R does not operate, the other stopped motor is restarted to eject the bag 3 that could not be stopped at the required position for grain filling and to start a new subsequent one. Bag 3' is allowed to be fed out.

[Brief explanation of drawings]

The drawings show an embodiment of the bag feeding mechanism of the grain bagging device according to the present invention, and FIG. 1 is an overall side view, and FIG.
The figure is a front view showing the grain discharge port, FIG. 3 is an overall schematic plan view, and FIG. 4 is an internal circuit diagram of the control device. 1...Rotation feeding shaft, M _R , M _L ... Drive device,
2...eyelet, 3...grain storage bag, 3'...following bag,
4...Control device, LS1 _R , LS1 _L ...Sensor.

Claims (1)

[Scope of utility model registration request] Grain storage bag 3 forming a pair of left and right eyelets 2, 2
A pair of left and right rotary feed-out shafts 1, 1 are provided to suspend and support the grains through the eyelets 2, 2, and by driving these rotary feed-out shafts 1, 1 around their respective axes, the suspended grain Driving devices M _R and M _L for feeding the storage bag 3 to a predetermined grain filling position are provided corresponding to the left and right rotating feed-out shafts 1, 1, respectively, and the left and right eyelets 2, 2 detect when the grain filling predetermined position is reached. A grain bagging device is provided with left and right sensors LSI _L and LSI _R that sense each other, and the drive devices M _R and M _L are stopped in operation based on the sensing operation of these sensors LSI _L and LSI _R , respectively. In the bag feeding mechanism, when feeding the succeeding bag 3' to a predetermined position after the grain filling process, one sensor LSI is not activated even after a period of time equivalent to reaching the predetermined position after the rotational feeding shaft 1 is started. If _L or LSI _R does not sense and operate, and the other sensor LSI _R or LSI _L senses and operates, and only the rotary feeding shaft 1 corresponding to the other sensor LSI _R or LSI _L is stopped, the other sensor LSI _R
Alternatively, a bag dispensing mechanism of a grain bagging device is provided with a control device 4 that restarts the other sensor LSI _R or the rotary dispensing shaft 1 corresponding to the LSI _L despite the sensing operation of the LSI _L.