JPH0526447B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for automatically filling a paddy bag with paddy from a hopper in a combine harvester, a harvester, etc., and specifically relates to an automatic paddy bag opening device.

Traditionally, to fill paddy from a hopper into a paddy bag,
It is necessary to pull out the paddy bag in the space below the hopper, open the paddy bag, and insert the hopper outlet into it, but the space below the hopper is extremely narrow and relatively deep. , these tasks were difficult and troublesome. Therefore, the paddy bag is conveyed to the discharge port of the hopper using a paddy bag feeding device,
Furthermore, a device has been devised in which the paddy bag is opened by an automatic bag opening device, and an autoshutter is opened in this state to automatically fill the paddy bag with paddy, but this existing example Although it is possible to detect that the paddy bag has been pulled out to the specified position, it is not possible to detect whether the paddy bag is completely opened, and the shutter is opened with the paddy bag closed and the paddy is removed. Sometimes I spilled some.

In view of the above-mentioned circumstances, the present invention provides automatic paddy bag opening in a paddy filling device that reliably prevents defects such as spilling of paddy by detecting whether or not the paddy bag is completely opened. The purpose is to provide a device.

The present invention provides an automatic bag opening device consisting of a pair of suction devices, in which all of these suction devices are provided with an open bag detection sensor that detects when a paddy bag is suctioned and opened. This device is characterized in that the automatic shutter is configured to open only when the sensing sensor detects adsorption and opening of the paddy bag.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the combine 1 has a paddy filling section 3 behind the driver's seat 2.
The paddy filling part 3 is provided with a hopper 5 and a space A below the hopper 5. In the space A, paddy bags 7 are hung in two rows by four hanger bars 6, and the paddy bags 7 are hung in the center so that the central end of the paddy bags 7 can be hung. A bag feeding device 9 is provided.

On the other hand, the hopper 5 has two discharge ports 10, 10, and an auto shutter 11 is slidably inserted into the discharge ports 10, as shown in FIGS. 3 and 4. At the same time, a shutter cover 12 is fixedly installed above it. The auto shutter 11 is made of a hollow member with a square cross section, and opens when slid downward as shown by the solid line in Figure 3.
The upper end of the shutter cover 1 slides upward.
It is closed when it is fitted with 2. Further, a plate 13 is fixed to the autoshutter 11 so as to protrude from the hopper 5, and an arm 16 is connected to the plate 13 via a pin 15 and a long hole 16a (see FIGS. 1 and 2). figure). The arm 16 is connected to an auto shutter opening/closing motor 20 via a shaft 17 or a link 19, and therefore, the two left and right auto shutters 11 are synchronized by forward and reverse rotation of the motor. It opens and closes.
In FIG. 3, S1 is a paddy sensor, S2 and S3 are open/close position detection switches of the auto shutter 11, and m is paddy.

On the other hand, the paddy bag feeding device 9 is shown in FIGS.
As shown in the figure, it has a chain case 21 that serves as a guide surface, and the case 21 is rotatably supported at the back side of the space A and is connected to a transport motor 22. A drive sprocket 23 is supported. Further, a chain 26 is wound between the drive sprocket 23 and the floating sprocket 25 on the tip side.
A support 27 having a roller is connected to a predetermined location of 6. The support 27 has brackets 29 extending to the left and right hanger bars 6.
(Fig. 1) is fixed, and the bracket 29
A magnet 29a that attracts the metal fittings of the rice bag 7 is fixed to the. Further, a clamping arm 30 is rotatably supported on the support 27 so as to face the magnet 29a, and the arm 30 is guided by a cam surface 21a on the lower surface of the case 21 and is switched between a clamping position and a release position. . Further, the tip of the case 21 is connected to the auto shutter 11 via a link 31, and in conjunction with the vertical movement of the shutter 11, the paddy bag feeding device 9 swings to the position shown by the solid line and the position shown by the chain line. move. In FIG. 5, reference numeral 32 denotes a stopper plate for stopping the bag, which is configured to be retractable by a spring 33 and a rod 35. Further, S5 and S6 are reversing switches provided on the plate 32, S7 is a potentiometer for detecting the position of the magnet 29a and the arm 30, and 36, 3
6 is a bag stopper made of a flexible body or the like.

An automatic rice bag opening device 37 according to the present invention is disposed at the discharge port 10 portion of the hopper 5. The bag opening device 37 has a gear case 39, as shown in FIGS. 8 and 9, and a large number of gears 40a to 40e are built in the case. The drive gear 40a is connected to a bag opening device drive motor 41 (FIG. 1) via a transmission shaft 38, and gears 40d and 40e that mesh with each other and have the same number of teeth have an arm 42 and an arm 42, respectively.
43 are connected. In addition, these arms 4
2 and 43 intersect with each other, that is, the arm 42 extending toward the front of the hopper 5 is connected to the gear 40d on the rear side via a shaft 40d' projecting outward from the case 39, and the arm 42 extends toward the front of the hopper 5. An arm 43 extending toward the rear side connects the gear 40e on the front side via a shaft 40e' projecting inward of the case 39.
is connected to. Furthermore, these arms 42, 43
At the tips of the paddy bag suction devices 45, 45 are rotatably supported, respectively, and the devices 45 have a cover 46 and a bag opening magnet 47. In the figure, S9 and S10 are upper and lower limit position switches of the suction device 45, which are controlled by an arm 49 provided on the drive gear 40a.

Then, as shown in FIGS. 10 and 11,
The suction device 45 is pivotally supported by arms 43 and 42 at its upper part, and together with a balance spring 53 (FIG. 12) to be described later, the magnet 47 is always oriented vertically, and the magnet 47 is centered. The magnets 47 of the pair of adsorption devices 45 have opposing surfaces having the same polarity. Furthermore, a bush 49 having a female thread is fitted and fixed in the hole 47a of the magnet, and a sleeve 50a welded to the center of a bracket 50 is screwed into the bush 49 by a male thread formed on its outer periphery. It is worn. A rod-shaped actuator 51 is slidably guided in the sleeve 50a, and is located between the cylindrically bulged inner end of the actuator 51 and the cover 46 that is fitted and fixed to the bracket 50. A return spring 52 is contracted in the .
Therefore, the actuator 51 is always urged to be in the protruding position as shown by the chain line in FIG. A bag opening detection switch S11 is provided.
Note that the switch S11 is a normally closed switch,
Therefore, the actuator 51 protrudes and the cam portion 51a
The actuator 51 is OFF at the position where it is in contact with the paddy bag 7 (the chain line position), and the actuator 51 is in contact with the paddy bag 7 and retracted, and at the position where it is away from the cam part 51a (the solid line position).
Turns on. Note that 48 in the figure is an interference material made of rubber, plastic, etc. provided at the center of the attracting surface of the magnet 47, and is used to prevent the magnets 47 from attracting each other. Moreover, as shown in FIGS. 12 and 13,
A balance spring 53 made of a torsion spring is disposed between the arms 43, 42 and the suction device 45, and the spring 53 acts on the back surface of the magnet 47 so that when the suction device 45 is in the raised position, That is, when the arms 43 and 42 are close to horizontal and there is a large angle between the arms and the suction device 45, the biasing force is weak, and when the suction device 45 is in the lowered position, that is, when the arms 43 and 42 are vertical When the angle between the arm suction device 45 and the arm suction device 45 is close to , the biasing force acts strongly. Therefore, 1
The surfaces of the magnets 47 of the pair of adsorption devices 45 are arranged to face each other substantially in parallel, and to move up and down while maintaining this facing state.

On the other hand, as shown in FIGS. 14 to 16, the paddy bag 7 has metal fittings 55 made of iron plates at both ends of its upper part.
is sandwiched therein, and an aluminum eyelet 56 having a hole 56a for the hanger bar 6 is caulked into the metal fitting 55 with an eyelet. Also,
Suction devices 45 are installed on both sides of the upper center of the paddy bag 7.
A metal fitting 57 is provided to serve as a target. Metal fittings 57
consists of four disc-shaped iron pieces 57a such as washers, with a cloth 59 such as vinyl interposed between them and the bag 7, and an equivalent cloth 59 interposed between them and the bag 7, and an equivalent cloth 59 interposed between them and the bag 7. 59 is sewn into the bag 7.
As shown in FIG. 9, the outlet 10 of the hopper 5 is slightly offset from the center of the hanger bar 6 due to the flow of paddy inside the hopper.
7 is located at the center of the rice bag 7, that is, at the center (L/2) of the hanger bar 6.

Next, the operation of this embodiment having the above structure will be explained.

The magnet bracket 29 and arm 30 of the paddy bag dispensing device 9 are on standby at position A in FIG. From this state, press the start button S of the paddy filling device.
12 (see Figure 1), the transport motor 22
rotates and moves the support in the direction from A to B via the chain 26, and at this time, the arm 30 is in an open state as shown by the chain line by the case cam surface 21a. Then, the magnet 29a of the bracket 29 comes into contact with the metal fitting 55 of the paddy bag 7 and attracts only one paddy, and the reversing switches S5 and S6 are activated by the pressure of the bracket 29, and the motor 22 is reversed to rotate the support 27. Move from b to b. As a result, only one paddy bag 7 is transported forward based on the attraction of the magnet 29a, and in the middle of the transport, the arm 30 is switched to the clamping position by the cam surface 21a, and the paddy bag 7 is attracted and transported by the magnet 29a. The support provided by the arm 30 ensures that it is transported to position C. At this time, the other end of the paddy bag 7 is temporarily fixed by a bag stopper 36 made of a flexible body, as shown in FIG. 5, so that the paddy bag 7 is tensioned diagonally. In this state, the bag opening device drive motor 41 rotates based on the signal from the potentiometer S7, and the arms 42, 42
A pair of suction devices 4 are attached to the metal fittings 57 on both sides of the rice bag 7 which is in the stretched state.
The 47 surfaces of the magnets No. 5 collide with each other. At this time, due to the impact force of the suction device 45, the bag stopper 36 at one end of the paddy bag
is released, and the lower limit switch S10 is turned on, and the support 27 is moved back to the position of the hopper outlet 10, as shown in FIG. 7D. Thereafter, the bag opening device drive motor 41 is reversed, and the arms 42,
43 rotates upward, and as a result, the metal fittings 57 sewn on both sides of the paddy bag are attracted to the magnets 47 of the suction device 45, and the empty bag 7 is opened, and at the same time the suction device 4
By moving the paddy bag 5 upward, the slack at the hem of the paddy bag 7 is removed.

At this time, the actuator 51 resists the return spring 53 due to the attraction of the metal fitting 57 of the magnet 47.
is withdrawn and the open bag detection switch S11 is turned on, but if there is a problem in the series of operations so far, for example, there are paddy bags in one row, but there are no paddy bags in other rows. In this case, if any of the paddy bag separation mistakes, transportation mistakes, paddy bag opening mistakes, etc. occur, the metal fitting 57 of the paddy bag 7 is removed from any of the suction devices 45.
Since it is not absorbed, one of the switches S11 remains in the OFF state. Then, the first
As shown in Fig. 7, each bag opening detection switch S11
... are all connected to AND circuit C1, so
A progress signal to the next step (AND circuit C2) is not transmitted, and is output to alarm device B via NOT circuit C3, thereby activating an alarm device such as a buzzer. Note that FIG. 17 shows only the bag-opening operation state of the automatic bag-opening device 37 using a logic circuit for convenience; in reality, it is shown by a microcomputer in conjunction with other operations such as the paddy bag feeding device 9. controlled. In addition, when there is no empty bag 7 between both magnets 47 when opening a bag using the suction device 45, the opposing magnet 47
Since the magnets 47 have the same polarity, they repel each other. Therefore, the magnets 47 do not attract each other and place an excessive load on the bag opening device driving motor 41, and the arms 42, 43 are easily moved.
can be rotated upward.

Then, all the bag open detection switches S11 are
When the paddy sensor S1 is turned ON when the paddy sensor S1 is turned ON due to a small amount of paddy accumulated in the hopper 5 when the two rows of paddy bags are opened without any trouble, the shutter opening/closing motor 20 is driven and the auto shutter 11 is activated. It descends, the hopper discharge port 10 opens, and the paddy m is supplied to the paddy bag 7. Also, at the same time as paddy is supplied, the paddy bag feeding device 9 linked to the autoshutter 11 is operated by the seventh
Move upward as shown by the chain line in the figure, and further in this state,
That is, with the feeding device 9 positioned upward and the magnet bracket 29 and arm 30 not interfering with the paddy bag 7, the bracket 29 and arm 30 are moved backward to the standby position A. On the other hand, when the paddy bag 7 is opened by the suction device 45, it is in a slightly lifted state, and when the paddy bag 7 becomes heavy due to the supply of paddy to the paddy bag 7, the paddy bag 7 is removed from the suction device 45. Note that even if the paddy bag 7 is removed from the opened state by the suction device 45, since the auto shutter 11 has descended and is located inside the paddy bag 7, filling of paddy can be continued without any hindrance, and the paddy bag 7 can be filled with paddy without any trouble.
When the paddy center S1 is turned on again when the rice fills up and overflows into the discharge port 10 of the hopper 5, the auto shutter 11 is raised to close the discharge port 10. Simultaneously with the raising of the shutter 11, the feeding device 9 is lowered, and the magnet bracket 29 and arm 30 are returned to the initial standby position.

As explained above, according to the present invention, the bag opening detection sensor S1 detects that the paddy bag 7 is sucked and opened by all the suction devices 45 of the automatic bag opening device 37.
1, and the auto shutter 11 is configured to open only when all the open bag detection sensors detect the adsorption and opening of a paddy bag, so the shutter is opened when the paddy bag is not opened, and the paddy is removed. Problems such as spilling can be completely prevented. Furthermore,
In a series of paddy filling operations consisting of the auto shutter 11, the paddy bag feeding device 9, and the paddy bag automatic opening device 37, even if a malfunction occurs in any of the operations, for example, the hanger bar 6 will run out of empty bags 7. In this case, even if any one of the following occurs: an error in separating or transporting the paddy bag by the paddy bag dispensing device 9, an error in opening the bag by the automatic bag opening device 37, etc., the auto shutter 11 will not open in the end. There is no need to provide a confirmation sensor for each operation, which simplifies the device, and also reliably prevents spillage of rice, which would be a very serious consequence, and allows the operator to use it with peace of mind. Furthermore, when the open bag detection sensor S11 is actuated by the actuator 51 slidably guided to the center of the magnet 47 of the suction device 45, the paddy bag 7 is sensed at the center of the acting force of the suction device 45. 7 can be reliably sensed, and the occurrence of sensing errors can be eliminated.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a combine harvester to which the present invention is applied, Fig. 2 is a rear view of its paddy filling section, Fig. 3 is a side sectional view showing the autoshutter of the hopper, and Fig. 4 is its U-U 5 is a plan view of the paddy bag dispensing device, and FIG. 6 is a side view thereof.
Fig. 7 is a side view showing the operation of the paddy bag dispensing device, Fig. 8 is a side view showing the automatic paddy bag opening device, Fig. 9 is a front view thereof, and Fig. 10 is a sectional view showing the suction device. Fig. 11 is a front view of the suction device, Fig. 12 is a side view of the suction device with a balance spring installed, Fig. 13 is a front view thereof, Fig. 14 is a front view of the paddy bag, and Fig. 15 is its side view. A cross-sectional view taken along line X-X, FIG. 16a is a cross-sectional view showing the metal part, b
is a partially enlarged view thereof, and FIG. 17 is a diagram showing an example of a partial electric circuit. 1... combine harvester, 3... paddy filling section, 5... hopper, 7... paddy bag, 9... paddy bag feeding device, 1
0...Discharge port, 11...Auto shutter, 37
... Automatic bag opening device, 45 ... Suction device, 47 ...
Magnet, 51... Actuator, 57... Metal fitting, S
11...Bag opening detection sensor (switch).

Claims (1)

[Claims] 1 It has an autoshutter 11, a paddy bag dispensing device 9, and an automatic paddy bag opening device 37, and the paddy bag dispensing device conveys the paddy bag to the discharge port 10 of the hopper 5, and further the paddy bag is In a paddy filling device that opens a bag with an automatic bag opening device and in this state opens an autoshutter to fill the paddy bag with paddy, the automatic bag opening device consists of a pair of suction devices 45, and all of these The suction device is equipped with an open bag detection sensor S11 that detects the suction and opening of a paddy bag, and the auto shutter opens only when all the open bag detection sensors detect the suction and opening of a paddy bag. An automatic bag opening device for paddy bags in a paddy filling device configured as follows.