JPH0318848B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic bag opening device for a grain storage bag used in a grain storage device such as a threshing machine.

Conventionally, as a grain storage bag used in this type of grain storage device, a guide rod is inserted through the insertion holes provided on the left and right sides of the upper opening, and the grain storage bag is moved from the empty bag storage position to the lower position of the grain hopper. What has been done is known.

In addition, as an automatic feeding device that automatically feeds grain storage bags in the empty bag storage position one by one towards the lower position of the grain hopper, for example,
A sliding type of grain storage bag that utilizes the sliding of the grain storage bag itself guided by an inclined guide rod as in Japanese Patent Publication No. 53-24876, or a horizontal spiral blade as in Japanese Patent Publication No. 53-24876. A spiral blade type has been proposed.

In these conventional automatic dispensing devices using the sliding type or spiral blade type, the upper part of the bag body that is inserted through the guide rod is closed and closed by the filled grains provided at the upper side of the grain storage bag. The reality is that it can only be used with special grain storage bags that have a tongue at the neck. It consists of a grain trough that moves up and down on the hopper side, and the lower part of this grain trough projects into the opening/closing tongue and is only filled with grains by the downward movement of the grain trough.

The grain storage bag that has been moved below the grain hopper needs to be held in an open state, and devices for opening this storage bag are disclosed, for example, in Japanese Patent Publication No. 48-38958 and Japanese Patent Publication No. 52-16432. is proposed.

These known techniques have a structure in which the upper part of the storage bag is opened at a height along a guide rod extending from the empty bag storage position to a position below the hopper, and the upper part of the storage bag is opened at a height along the guide rod that supports the left and right sides of the storage bag. The lower part of the storage bag must be supported by a grain receiving floor, etc. to prevent it from being used. There is a problem that it is not filled.

The above-mentioned Special Publication Publication No. 52, which was designed to solve this problem,
Although Japanese Patent No. 16432 has been proposed, the pedestals that receive the bottoms of these bags are vibrated, and this has the drawback of increasing manufacturing costs due to the provision of a separate vibrating device.

In addition, the automatic bag opening device proposed in Japanese Utility Model Publication No. 56-117646 has a structure in which a bag hanging arm that inserts and supports both left and right sides of a paddy bag is lowered together with a filled paddy bag. Even if the paddy bag can be supported in a stretched state at the initial stage of filling, once the grains are filled, the bag hanging arm and the paddy bag will descend at the same time. There was a drawback that only the sides could not be raised, and the raising of the paddy bag could not be used for other devices.

The present invention was obtained in order to eliminate the drawbacks of the prior art, and is to transport the storage bags in the empty bag storage position one by one to the bottom of the grain hopper, and to automatically load the storage bags at that position. The object of the present invention is to provide a device that can open a storage bag, connect it to a grain hopper, prevent the bag from bending downward when it comes into contact with a paddy receiving floor, and fill the entire inside of the storage bag with grains. .

To achieve the above object, the present invention provides a device for handling a grain storage bag, which includes insertion holes opened on the left and right in the vicinity of the opening, and magnetic materials provided on both sides of the opening between these insertion holes. (1) a substantially horizontal guide rod inserted into an insertion hole of the grain storage bag and supported on the empty bag transport path from the empty bag storage position to the lower position of the grain hopper; (2) the empty bag; In the storage position, it moves forward by magnetically attracting the area near the opening of the storage bag located in the front row.
(3) a guide plate provided at a position below the grain hopper and extending vertically; a movable plate guided along the guide plate; and a movable plate that is guided along the guide plate. a link mechanism having one end pivoted on both sides of the storage bag and a magnet provided at the other end, and the magnets being pressed and attracted to magnetic bodies provided on both sides of the storage bag in the vicinity of the moving path of the bag dispensing mechanism. This is an automatic bag opening device comprising: a bag opening device having a mechanism for separating the magnets at a position close to the lower part of the grain hopper;

Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings.

FIG. 1 shows the grain collection section of a combine threshing machine equipped with the bag opening device of the present invention.The grains threshed by the threshing machine 1a are hoisted to the upper part of the hopper 1 by the hoisting cylinder 1b. It is thrown into the hopper 1. Two hoppers 1 are provided in parallel in the front and back directions of the paper, and a discharge port 1c is provided at the lower end of each hopper 1. As shown in Figure 2, the discharge port 1
A discharge cylinder 6 is fitted into c so that it can move up and down.
When the discharge cylinder 6 rises, the lower end 6a moves upward from the lower end of the hopper discharge port 1c, and the upper end faces the eaves plate 3 to close the discharge port 1c.
Further, when the discharge cylinder 6 is lowered, the lower end 6a is made to protrude below the lower end of the hopper outlet 1c, and the upper end is separated from the eaves plate 3 to open the outlet 1c. Such opening/closing operation of the discharge port 1c by the discharge tube 6 is performed by a discharge tube lifting device K provided below the hopper 1.
Implemented by

Below the hopper 1, a guide rod 4 for slidably suspending the grain storage bag 50 is provided horizontally. The guide rod 4 has a cylindrical rod 4a and this cylindrical rod 4a.
It is composed of a bar rod 4b that is slidably fitted into the frame member 4b, and has a freely expandable and retractable structure. A bag dispensing device L, the details of which will be described later, is provided parallel to the guide rod 4. This bag dispensing device L has a dispensing port 1 that feeds grain storage bags 50 one by one from an empty bag storage section indicated by J.
c Perform the operation to extend it to the bottom. Further, above the bag dispensing device L, there is provided a bag opening device M of the present invention, the details of which will be described later. This bag opening device M has an empty grain storage bag 5 guided to the lower part of the discharge port 1c.
0 is widened wide and pulled up to cover the circumference of the discharge port 1c. Furthermore, a full bag pull-out device N is provided for pulling out the grain storage bag 50, which is full of grains, forward from the working position while suspended from the telescopic guide rod 4.

The details of each main part of each device will be explained below.

[Grain storage bag 50] Figures 12 to 14 show the grain storage bag 50,
The bag body is constructed so that both side edges and the lower edge are closed, and the upper edge is open, and is sewn from breathable fiber cloth. Eyelets 51 for inserting the guide rod 4 are provided on both sides of the upper part, and a magnetic material 52 such as an iron plate is attached near the eyelets 51. The magnetic body 52 is folded twice, straddles the upper edge of the bag, and is fixed with rivets 53 so as to sandwich both the front and back sides. In addition, a magnetic material 54 such as an iron piece is wrapped in a cloth 55 and attached to both side surfaces at a central position sandwiched between the eyelets 51, 51 at both ends.

FIG. 15 shows another embodiment of the grain storage bag 50, in which 5 magnetic materials per one side of the bag.
The number of 4 is not 4 as in the above embodiment, but 1
It is made individually.

[Discharge tube lifting device K]

Referring to FIGS. 3 and 5, a transmission shaft 21a is rotatably supported on a frame integrally fixed to the hopper 1, and an arm 8 is fixed to the end of the transmission shaft 21a. It is designed to rotate. A long hole 8a provided in the arm 8 engages with a pin 6b fixed to the side surface of the discharge cylinder 6, and the arm 8 moves from a to
When rotated between b, the discharge cylinder 6 is moved up and down, and the hopper discharge port 1c is opened and closed as described above. That is, when the arm 8 is at position a, the discharge cylinder 8 is at the discharge port 1.
c is closed, and at position b, the discharge port 1c is opened. The other hopper in the pair is also provided with an arm 8' having a similar configuration, and a pin 6b on the side surface of the discharge cylinder 6 is engaged with the elongated hole 8a' of the arm 8'. This arm 8' is integrally fixed to the shaft 21a', and an arm 11' fixed to the shaft 21a' is connected via a rod 12 to an arm 11 fixed to the transmission shaft 21a side. Therefore, the arm 8' is adapted to move in synchronization with the arm 8 described above.

A gear 21 is fixed to the other end of the transmission shaft 21a. This gear 21 is connected to the motor 1 which can rotate in forward and reverse directions.
A pinion gear 20 driven by 0 is in mesh. Therefore, the discharge cylinder 6 is moved up and down by the power of the motor 10.

The motor 10 causes the arm 8' to switch S when the discharge cylinder 6 reaches the raised position and closes the discharge port 1c.
It is stopped by turning on 8. Further, when the motor 10 reversely rotates and the discharge cylinder 6 descends to open the discharge port 1c, the arm 8' closes the switch S.
By turning on 5, the reverse rotation is stopped.

Reference numerals 13 and 13' designate fullness detection sensors provided above the discharge ports 1c of the left and right hoppers 1, respectively. These sensors 13, 13' are turned ON to detect when the grain storage bag 50 is full and the discharge port 1c is blocked, and output a start signal to the motor 10 to raise the discharge tube 6. .

FIG. 16 shows an electric circuit for raising and lowering the discharge cylinder 6.

In this electric circuit, 15 is a manual switch, which is provided outside the lower part of the hopper 1, as shown in FIGS. This manual switch 15 is
It is provided so that the discharge cylinder 6 can be manually raised and lowered at any time, giving priority to the automatic operation based on the full detection sensor 13, 13'.
When turned on to the point S side, the relay 307 is switched, the motor 10 rotates, and the discharge tube 6 is lowered. Also, if it turns on to point u side, relay 3
08 is switched, the motor 10 is reversed, the discharge tube 6 is raised, and the discharge port 1c is closed. Therefore, it is convenient when interrupting work.

In electrical circuit diagrams, 300, 301, 302
is a monostable multi-circuit, and its output becomes L for a short period of about 1 second due to a rising input signal. In addition, the switch S7 is turned OFF when the movable plate 84 of the bag opening device M, which will be described later, reaches the raised position.
As described later, the bag-opening tool opens the empty grain storage bag 50 into the outlet 1 of the hopper 1.
When pulled up to cover the outside of c,
Changes from OFF to ON.

When the grain storage bag 50 is pulled up in this way and the switch S7 is turned ON, the discharge tube 6 is in the closed raised position, so the switch S5 is turned OFF.
It is. Therefore, from turning on switch S7,
S of the flip-flop 305 becomes L, R becomes H, and Q outputs H. Therefore, the relay 307 switches, the motor 10 lowers the discharge cylinder 6, and
Rotate in the direction to open the discharge port 1c. Here, due to the monostable multi-circuit 300, S of the flip-flop 305 changes from L to H immediately, but R changes to H.
and Q holds H. When the discharge cylinder 6 is in the lowered open position and the switch S5 is turned on,
R of flip-flop 305 becomes L, S becomes H
Therefore, Q is reset to L and the motor 10 is stopped. Due to the lowering of the discharge cylinder 6, the switch S8 is activated.
Although it changes from ON to OFF, the full detection sensor 13,
13' is not turned on, the output of the flip-flop 306 remains at L, and the motor 10 does not start.

Next, when the grain storage bag 50 becomes full and the fullness detection sensors 13 and 13' are turned ON, S of the flip-flop 306 becomes L and switch S8 is OFF, so R outputs H and Q outputs H. do. Therefore, the motor 10 reverses and the discharge tube 6 rises, closing the discharge port 1c. This rise of the discharge cylinder 6 turns on the switch S8, so
The monostable multi-circuit 302 detects the rising edge of the input and outputs an instantaneous output L. Therefore, the flip-flop 306 is reset with S set to H, R set to L, and Q set to L, so that the motor 10 stops.

[Bag feeding device L]

Referring to FIGS. 3 to 5, a pair of guide rails 34, 34 are arranged below each discharge port 1c of the two left and right hoppers 1, and the guide rails 34 are fixed to a frame 36. .
A transmission shaft 33 is provided on the frame 36 side of this guide rail 34 and is pivotally supported so as to cross all of these guide rails 34, and sprockets 32a are each fixed to a position on this transmission shaft 33 adjacent to the guide rail 34. has been done. Furthermore, a sprocket 32b is rotatably supported on the opposite side of each guide rail 34, and a chain 35 is stretched between the sprocket 32b and the sprocket 32a.

On the other hand, a motor 22 capable of forward and reverse rotation is attached to a bracket 24 fixed on the opposite side of the frame 36. The drive shaft 25 of this motor 22 drives a shaft 26, and also a sprocket 2 fixed to the shaft 26.
7 and the sprocket 29 fixed to the transmission shaft 33
A chain 28 is stretched between the motor 22 and the motor 22 so that the power of the motor 22 is transmitted to a transmission shaft 33. Therefore, when the motor 10 rotates forward and backward, the chain 35 reciprocates along the guide rail 34.

A bracket 44 is fitted onto the guide rail 34 via rollers 42 so as to be able to reciprocate along the guide rail 34. Further, a permanent magnet 45 is attached to the bracket 44, and the chain 35 is connected thereto. Therefore, when the chain 35 moves back and forth as described above,
A bracket 44 is adapted to reciprocate together with a permanent magnet 45. That is, it constitutes a so-called moving magnet. At both ends of the reciprocating path of the moving magnet, switches S3 and S4 are provided oppositely at positions corresponding to the respective brackets 44.
3, S4 is turned ON when the bracket 44 comes into contact with the motor 22, and stops the rotation of the motor 22.

Further, at the innermost side of the empty bag storage section J, switches S1 and S2 for detecting the presence or absence of empty bags are provided corresponding to the left and right grain storage bags 50 and 50, respectively. As shown in FIG. 5, each switch S1, S2 is provided at a position away from the moving path of the moving magnet, and only when the grain storage bag 50 is present in the empty bag storage position J, the grain storage bag 50 is opened. The pressing force of the moving magnet acts through 50 to turn it on. That is, when the grain storage bag 50 is not present at the empty bag storage position J, the moving magnet does not come into contact with the switch S.
1, S2 does not operate.

Further, the guide rail 34 is configured to be able to swing between A and B around a shaft 26 that is pivotally supported by the body frame 30. A frame 37 is fixed to this guide frame 34 so as to cross the upper surface thereof, and via this frame 37,
It is designed to be interlocked with the above-mentioned discharge cylinder elevating device K. That is, the bracket 3 is placed on the upper surface of the frame 37.
8 is fixed, and this bracket 38 is the link 3.
It is connected to an arm 9 fixed to a transmission shaft 21a on the side of the discharge cylinder elevating device K via 9, 40, 41, and a guide rail 34 is interlocked therewith. The above link 40 is a shaft 40
It is freely rotatable around a, and this link 4
A long hole of the link 39 is engaged with one end of the link 39. Therefore, when the discharge cylinder 6 is in the raised position a, the links 39, 40, and 41 are in the position a in the figure, and the guide rail 34 is in the approximately horizontal state shown by A, but the discharge cylinder 6 is in the lowered position b. Then, links 39, 40,
41 is in the b position in the figure and the guide rail 34 is B.
The state changes to a tilted state as shown in .

Now, in the bag feeding device L mentioned above, the device L
When is in a non-operating state, the moving magnet is waiting at the position indicated by A in FIG. From this state, when the motor 22 is rotated by the bag feed signal, the permanent magnet 45 of the moving magnet moves toward the empty bag storage section J together with the bracket 44.

When the bag dispensing device L moves forward, the permanent magnets 45 on both the left and right sides move together with the bag dispensing device L.
are located in the front row and are contacted and attracted to the magnetic bodies 52 provided on the left and right sides of the grain storage bag 50, and continue to be pressed. Due to this pressure, the grain storage bag 5 is placed in the empty bag storage position.
0 is pressed one after another to turn on the switches S1 and S2, and the presence of the grain storage bag 50 is sensed. When both switches S1 and S2 are turned ON, the rotation of the motor 22 is stopped once and then immediately reversed, and the bag feeding device L is moved so that the left and right permanent magnets 45 are connected to the left and right magnetic bodies 52 located above the insertion hole 51. The grain storage bags 50 in the front row are moved forward toward the lower part of the discharge port 1c with the grain storage bags 50 adsorbed to the grains. Hole 5
1 is fed out from the empty bag storage position toward the position below the discharge port 1c while being guided by the left and right guide rods 4. Then, when the bracket 44 contacts the switch S4 and turns it on, the motor 22
stops. As a result, the left and right pair of grain storage bags 50, 50 are arranged below the discharge ports 1c, 1c, respectively.

When the grain storage bag 50 is placed below the discharge port 1c, the grain storage bag 50 is opened wide by a bag opening device M, the details of which will be described later, and is pulled up to a position covering the outside of the discharge port 1c. Next, motor 1
0 rotates, the arms 8, 8' lower the discharge tubes 6, 6, and insert the lower end 6a of the discharge port 6 into the grain storage bag 50. In conjunction with this lowering of the discharge cylinder 6, the guide rail 34 rises from the horizontal state A to the inclined state B. This guide rail 34
Due to this rise, a shearing force along the surface direction acts between the permanent magnet 45 and the magnetic body 52 of the grain storage bag 50, so that the permanent magnet 45 easily separates from this magnetic body 52. That is, the attraction force of the magnet acts strongly in the direction perpendicular to the surface of the magnetic material 52, but is small in the direction along the surface. If you move it in the direction along it, you can easily detach it.

When the guide rail 34 is raised and the discharge tube 6 is lowered to turn on the switch S5, the motor 10 is stopped. After the motor 10 is stopped, the motor 22 rotates by a certain angle, moves the moving magnet from the position B to the position A in the figure, and then stops.

When the grain storage bag 50 becomes full and the fullness detection sensors 13 and 13' are both turned on, the motor 10 rotates and the discharge tube 6 rises to close the discharge port 1c. With this closure, the guide rail 34 returns to the horizontal position A, but the moving magnet remains in position A and waits for the next collection operation so as not to interfere with the removal of the full bag.

As described above, according to the bag dispensing device L, the task of setting the empty grain storage bag 50 is simple because it is only necessary to insert and push the empty grain storage bag 50 through the guide rod 4. In addition, since the magnetic material 54 is provided on the side of the grain storage bag 50, the grain storage bags 50 do not attract each other, and the permanent magnet 45 of the moving magnet reliably attracts and feeds each grain one by one. be able to. That is, if a permanent magnet is attached to the grain storage bag 50 side, a plurality of grain storage bags 50 will be connected to each other due to attraction between the magnets, and each grain storage bag 50 will be reliably fed out one by one. things become impossible.

In addition, in the above embodiment, the permanent magnet 4 is used as the moving magnet.
5 is used, but you can use this magnet as an electromagnet.

[Bag opening device M]

Referring to FIGS. 6 to 11, 93 is a guide plate fixed to the lower side surface of the hopper 1. As shown in FIGS. With respect to this guide plate 93, it is slidably guided in the vertical direction via a roller 97 attached to the inner surface of the movable plate 84, so that it can reciprocate. On the other hand, 80
is a motor capable of forward and reverse rotation, and an arm 80a is fixed to the drive shaft of this motor 80 so as to swing back and forth from side to side. A pin provided at the tip of the arm 80a engages with a long groove of the arm 82, and the arm 82 is integrally fixed to a shaft 81 rotatably supported on the frame. An arm 83 is fixed to the shaft 81 and rotates together with the shaft 81. A long groove 83a provided at the tip of the arm 83 engages with a pin 84a fixed to the outer surface of the movable plate 84. Therefore, the reciprocating rotation of the motor 80 causes the movable plate 84 to reciprocate up and down.

S6 is a switch provided at the lower end of the guide plate 93,
When the movable plate 84 reaches the lowered position, it contacts and turns on, stopping the rotation of the motor 80. Further, S7 is a switch provided at the upper end of the guide plate 93, and is a switch provided on the upper end of the guide plate 93.
When it reaches the raised position, it contacts and turns ON, stopping the rotation of the motor 80 in the opposite direction.

Links 86 and 87 are provided at both ends of the moving plate 84.
is rotatably supported, and links 86 and 87
A plate 88 is pivotally supported on the other end side, forming a parallel link as a whole. A permanent magnet 90 is fixed to the plate 88 via a mounting plate 89.

On the other hand, an arm 9 is provided on each side of the links 86, 86 arranged on both sides to which the movable plate 84 is pivoted.
1 and 91 are fixed, and the arms 91 and 91 are connected to each other by a spring 92. Therefore, due to the elastic force of the spring 92, the links 86 and 87 always maintain a wide-angle posture with the tip side (the side where the plate 88 is attached) spread outward, as shown by the solid line.

Further, a cam 95 is fixed to the upper end side of the link 86. This cam 95 together with the moving plate 84
When descending from the ascending position d to the descending position c, the guide plate 93 comes into contact with a stopper 94 fixed to the lower side surface, and the left and right links 86, 87 as shown by broken lines
The permanent magnets 90 move closer to each other toward the center, and the grain storage bag 50 is brought into contact with and attracted to the magnetic bodies 54 on both sides. Next, when the motor 80 is reversed and the movable plate 84 rises again in the above-mentioned suction state, the cam 95 separates from the stopper 94 and opens the left and right links 86, 87 outward, widening the opening of the grain storage bag 50. while pulling it up. Therefore, the grain storage bag 50 is in the state D where the upper edge of the bag is below the lower end of the discharge port 1c as shown in state C, and covers the outside of the discharge port 1c. At the same time, the lower part of the bag, which had been bent so as to be bent on the floor 60 as shown in C, was bent on the floor 60 as shown in D.
Make it so that it does not bend upwards.

Therefore, according to the bag opening device M described above, the grain storage bag 50 is opened at the lower part of the hopper outlet 1c.
is attracted to the permanent magnet 90 at the tip of the bag-opening tool through the magnetic material 54 on the side, and in order to widen the upper opening,
The outside of the discharge port 1c can be covered, and the discharge cylinder 6 can be inserted reliably and smoothly. Moreover,
When the grain storage bag 50 is pulled upward by the bag opening tool, the lower part of the bag is prevented from bending or folding on the floor 60, so that the grains can be kept in the bag from the beginning of the storage operation. It can be filled evenly to the bottom.
In addition, since the grain storage bag 50 is held using a magnet, when a certain amount of grain is filled into the bag, the grain storage bag 50 is held by the weight of the grains. Since it is automatically detached from the permanent magnet 90, the detachment operation is not necessary, which simplifies the work, and since the bag is not lifted after it becomes too heavy, the bag is not damaged.

In addition, the permanent magnet 90 used in the above embodiment
may be replaced with an electromagnet.

[Full bag drawer N]

Referring to FIGS. 1 and 3, as described above, the guide rod 4 for suspending the grain storage bag 50 is constructed by slidably fitting together the cylindrical rod 4a and the rod rod 4b. . A support rod 61 is erected at the front end of the floor 60, with its lower end rotatably attached to a plate spring 62, and the upper end of the support rod 61 supports the end of the rod 4b. A frame 63 is fixed to the upper end of the support rod 61, and a plate spring 6 for holding is provided inside the frame 63.
4 removably grips the end of the rod 4b by elastic force.

Reference numeral 67 is a cover that covers the upper surface of the floor 60 in the empty bag storage section J, and prevents the flexible portion of the lower part of the empty grain storage bag 50 from directly interfering with the upper surface of the floor 60 and damaging it. Moreover, 68 is a partition plate provided at the boundary position of the empty bag storage position J to prevent interference between the empty bag and the full bag on the front side, and to prevent them from shifting together.

A hydraulic cylinder 65 is installed on the frame below the floor 60, and the tip of a piston rod 66 of the hydraulic cylinder 65 is fixed to the back surface of the apron where the front end of the floor 60 is bent. Therefore, by the operation of the hydraulic cylinder 65, the floor 60 located at the position indicated by the solid line in the figure moves forward together with the rod 4b of the guide rod 4 to the forward position (direction perpendicular to the direction of movement of the combine) indicated by the broken line. , and return to its original position. S9 and S10 are switches, respectively. Switch S9 is floor 6
When the piston rod 0 moves forward and the rear end comes off the switch S9, the hydraulic oil switching valve for the hydraulic cylinder 65 is closed to stop the piston rod 66 from moving forward. Further, the switch S10 closes the hydraulic oil switching valve for the hydraulic cylinder 65 when the floor 60 retreats and comes into contact with the rear end switch S10, thereby stopping the piston rod 66 from retreating.

Because of the above-described configuration, in this device, when the grain storage bag 50 is full, the hydraulic cylinder 65 is activated.
can be activated to pull out a full bag forward, and while the full bag remains in the drawn state, the next empty bag is fed out below the discharge port 1c by the bag feeding device L, and immediately used for the next grain storage operation. can move. Therefore, it is possible to work with full bags lined up in front and behind each other, thereby allowing more time for the work. You will be able to take as much as you can.

The automatic bag opening device according to the present invention has insertion holes opened on the left and right near the opening, and between these insertion holes,
This device handles grain storage bags each having a magnetic material on both sides of the opening, and is inserted into the insertion hole of the grain storage bag in the empty bag transport path from the empty bag storage position to the lower position of the grain hopper. A substantially horizontal guide rod supported by the empty bag storage position and the vicinity of the opening of the storage bag located in the front row at the empty bag storage position are attracted by magnetic force and reciprocated;
A bag dispensing mechanism that is disengaged at a position below the grain hopper, and a movable plate that is provided at a position below the grain hopper and is guided along a vertically extending guide plate, one end of which is pivotally supported on both sides of the movable plate. , a link mechanism with a magnet provided at the other end, and this link mechanism is pressed and attracted to magnetic bodies provided on both sides of the storage bag in the vicinity of the moving path of the bag feeding mechanism, and approaches the lower part of the grain hopper. The bag opening device is comprised of a bag opening device having a mechanism for separating the magnets at the position where the bag is opened, and the bag opening device has the following effects.

Among the storage bags stored and supported by a guide rod provided in a substantially horizontal direction at the empty bag storage position, a magnet installed in a reciprocating bag feeding device moves the vicinity of the opening of the storage body located in the front row. The grains can be adsorbed and fed to the lower position of the grain hopper without being transferred.

The grain storage bag fed out to the lower position of the grain hopper is pressed from the front and rear directions by magnets installed in the link mechanism of the bag opening mechanism against magnetic bodies installed on both sides of the center near the opening. and absorb this,
The grain storage bag is then opened and pulled up further, so that both left and right sides are supported by guide rods.
The bag-opening mechanism, which is attracted to the magnetic material on the bag side, pulls up both sides of the center side, preventing the bag from bending downward, especially in the early stages of grain filling, and ensuring that the grains are completely covered inside the storage bag. can be filled.

Furthermore, when the storage bag is filled with a predetermined amount of grains, the weight of the grains allows the magnetic body on the bag side to be automatically separated from the magnet on the bag opening mechanism side.

Therefore, the grain storage bag can prevent the lower part of the bag that contacts the paddy receiving floor from being bent and fill the entire storage bag with grains, and can also automatically separate from the bag opening mechanism when the storage bag is filled with a predetermined amount. Automatic bag opening device can be provided.

[Brief explanation of the drawing]

Fig. 1 is a side view of the main part of a combine equipped with the bag opening device of the present invention, Fig. 2 is a longitudinal sectional view of the hopper discharge part of the combine, Fig. 3 is a side view of the main part of the hopper discharge part, and Fig. 4 Figure A is a plan view of only the same essential parts, Figure 4B is a front view showing only the frame and guide rail in Figure 4A, Figure 5 is a front view of the same essential parts, and Figure 6 is the invention of the present invention. FIG. 7 is a side view of the bag opening device M, FIG. 8 is an enlarged view showing only the main parts of the bag opening device M, and FIG. 9 is a front view of the bag opening device M. is a view in the direction of the arrow in FIG. 8, FIG. 10 is a view in the direction of the arrow in FIG. 8, FIG. 11 is a perspective view of the cam portion of the device, and FIG. 12 is a front view of the grain storage bag used in the present invention. , FIG. 13 is a sectional view taken in the direction of the arrow in FIG. 12, and FIG.
FIG. 15 is a perspective view showing another embodiment of the grain storage bag, and FIG. 16 is an electric circuit diagram for operating the discharge cylinder. 1...Hopper, 1c...Discharge port, 4...Guide rod, 6...Discharge tube, 50...Grain storage bag, 54
... Magnetic material, 84 ... Moving plate, 86, 87 ... Link, 90 ... Permanent magnet, 93 ... Guide plate.

Claims (1)

[Claims] 1 A device that handles grain storage bags with insertion holes opened on the left and right near the opening, and a magnetic material provided on both sides of the opening between these insertion holes, and which handles grain storage bags from the empty bag storage position. In the empty bag transport path leading to the lower position of the hopper, there is a substantially horizontal guide rod that is inserted into the insertion hole of the grain storage bag and supported, and an opening of the storage bag located in the front row at the empty bag storage position. a bag feeding mechanism that magnetically attracts and moves the bag and releases it at a position below the grain hopper; a guide plate that is provided at a position below the grain hopper and extends vertically;
a moving plate guided along the guide plate; a link mechanism having one end pivoted on both sides of the moving plate and a magnet provided at the other end; An automatic bag opening device for a grain storage bag, comprising a mechanism that presses and attracts the magnet to magnetic bodies provided on both sides of the storage bag, and separates the magnet at a position close to the lower part of the grain hopper.