JPH0333572B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a storage section for holding a large number of grain storage bags in a suspended state on the fixed end side of a pair of left and right support rods for hanging bags, and A bag feeding portion for feeding the grain storage bag toward the free end is formed at a position closer to the free end on the opposite side of the fixed end than the storage portion, and between the left and right support rods for hanging bags. and a grain discharge port for supplying grain to an opening of a grain storage bag inserted and supported by the support rod at a location near the free end side of the grain storage bag. .

[Conventional technology]

Conventionally, in this type of automatic grain bagging device, the thread pitch of the threaded portion was constant over the bag delivery direction (for example, Japanese Patent Application Laid-Open No. 118016/1983).

[Problem to be solved by the invention]

Since the grain is continuously fed out below the grain outlet by means of a threaded part, in order to secure an opening area large enough to insert the movable outlet under the grain outlet and carry out bagging work, The thread pitch must be set large over the entire length. but,
A large screw pitch has the disadvantage that it is difficult to insert the eyelet of the bag into the starting end of the screw smoothly. However, if the screw pitch is made small over the entire length, there is a drawback that an opening area large enough to insert the movable discharge port cannot be secured, and in any case, simply setting the pitch is not sufficient.

Therefore, as disclosed in the above-mentioned prior art publication, the threaded portions are formed by arranging screws facing in opposite directions before and after the rod axis, and the eyelets on the front and rear surfaces of the bag are engaged with each screw, so that the threaded portions are aligned with the rod axis. It is possible to consider a structure in which the bag is opened by separating the eyelets on the front and back sides of the bag by rotating it around the center, but it is difficult to adjust the opening of the bag by timing the rotation of the screw part to stop, making it impractical. It was difficult to hire from above.

An object of the present invention is to provide a system that can solve the problems associated with the conventional structure by modifying the threaded portion provided on the support rod for hanging bags.

[Means for solving problems]

The characteristic configuration according to the present invention is that the bag hanging support rod has a bag supporting portion of the storage portion formed with a smooth outer surface, and the bag feeding portion has a
A threaded portion is formed that engages with eyelets formed at both ends of the opening of the grain storage bag and forcibly feeds the bag toward the free end by rotation around the rod axis, and further, the threaded portion The screw pitch is set to be larger toward the free end of the support rod, which is the latter half of the bag delivery direction, and its effects are as follows.

[Effect]

In other words, since the thread pitch of the threaded part can be made smaller in the front half, the eyelet of the waiting bag can be smoothly engaged with this threaded part, and the threaded part can be made smaller in the second half. Because the pitch is large, the opening area of the bag can be secured within a range that does not interfere with the insertion of the movable discharge port, and the pitch between the front and rear parts changes continuously. Therefore, the bags can be transferred smoothly even in this intermediate portion.

〔Effect of the invention〕

As a result, by simply changing the thread pitch of the threaded part, the bag can be transferred more reliably and smoothly, and the outer surface of the bag-supporting part of the storage part is formed into a smooth surface. Therefore, when inserting the eyelet into the bag support rod from the free end and moving it to the storage section to stack the bags, the bags can be inserted smoothly without getting stuck, for example.
When a screw is provided in the storage section, the pitch of the stacked bag is determined by the screw pitch.
Since the outer surface of the bag-supporting portion of the storage section is formed into a smooth surface, it has become possible to stack the bags at any desired pitch, making it possible to provide a useful automatic bag-filling device of this type. .

〔Example〕

A pair of left and right support rods 4, 4 for hanging bags is installed below the grain discharge port 5 of the hopper 8 in which grains are stored. A storage part 13 for storing and supporting the grain storage bag 3 having hanging support eyelets 2, 2 attached to both ends in the opening width direction is formed, and the storage part 13 is located on the opposite side from the fixed end. A bag feeding section 21 for feeding out the grain storage bag 3 toward the free end is formed at a position near the free end side of the bag feeding section 2.
1, a threaded portion 14 is formed that engages with the eyelets 2, 2 and forcibly feeds the bag 3 toward the free end side by rotation around the rod axis, and the eyelets 2, 2 and the threaded portion 1
As the bag 3 rotates due to the engagement with the eyelet 4, the bag 3 is sequentially fed out at a constant pitch toward the free end, and the bag 3 is continuously fed out to the eyelets 2, 2.
The bag opening 1 is automatically opened by the cooperative action of the strip-shaped reinforcing members 6, 6 provided on opposite sides of the bag and the threaded portion 14 having a lead angle in the same direction. A combine harvester, etc., in which grain is filled into the bag 3 by opening the first shutter 7 with the movable discharge port 5A held vertically slidably held in the grain discharge port 5 of 8 inserted into the opening 1. This consists of an automatic grain bagging device mounted on the machine.

The feeding means for the bag 3 will be described in detail based on FIGS. 3 to 4. The pair of left and right support rods 4,
4 is attached and fixed to a protruding frame 11 that is horizontally swingable around the vertical axis a, and this support rod 4 is connected to the protruding frame 11 and the fixed side frame 1.
5 is biased away from the other by a compression spring 22 provided between the two.

A spring 1 that elastically pushes out the group of bags 3 to the support rods 4, 4 on the free end side of the support rods 4, 4.
2 and 12 are provided, and motors 43 and 43 are provided for rotating the threaded portion 14 around the rod axis in order to send out the bag 3 toward the free end side.

Directly above the support rods 4, 4, a presser frame 30 is placed along the rod axis direction, and the bag opening 1
It is installed on the upper edge so as to be able to abut from above, and the left and right presser frames 30, 30 are pivotally supported at the rear supporting point so as to be integrally swingable up and down. A spring 31 for overhanging the dead point is installed between the presser frame 30 and the fixed side frame, so that the presser frame 30 can be brought into a horizontal state in which it can come into contact with the upper edge of the bag opening 1. It is possible to maintain the posture by switching between the upwardly lifted state and the upwardly lifted state. Furthermore, a detection limit switch 32 that can be operated by an operating piece provided on the presser frame 30 is provided near the rear fulcrum of the presser frame 30, and the limit switch 32 is activated only when the presser frame 30 is in a horizontal position performing a bag pressing action.
2 is activated to activate the automatic bagging operation switch provided at a separate location, allowing the support rod to be driven in the forward bag feeding direction, and to lift the presser frame 30 in the non-operating position. , so that the support rod 4 can be driven in the bag reverse rotation direction only when the automatic switch is set to the off position, thereby preventing the operator from moving the bag support rod 4.
Replenishment and loading work is possible.

An elastic actuation piece 33 is provided at the front end of the one pushing frame 30 in the bag feeding direction so as to protrude toward the support rod 4 side through an opening.
A limit switch 34 is provided to detect upward movement of the bag 3 due to contact with the upper edge of the bag, and is configured to detect that the bag 3 has been fed out below the grain outlet 5. Further, at the tip of the other presser frame 30, there are swinging pieces 35, 35 which are pivotally supported in two upper and lower stages and are horizontally swingable around the vertical axis. The slider 9 is stretched in two stages, upper and lower, so that it can come into contact with the movable locking arm 18 and the slider 9, and the swinging piece 35,
The locking arm 18 is equipped with switches 36, 36 that contact the locking arm 18 of 35 and detects the swinging movement due to contact with the slider 9, so that when only the upper swinging piece 35 is activated, the locking arm 18 moves to the slider 9. When it is determined that the fastener 9 has been operated without being locked, the locking arm 18 is actuated to perform the fastener closing operation again.

A horizontal axis X,
Shutter member 10A that can swing up and down around X,
10A, its tip 10a, 1 in its closed state.
The shutter members 10A, 10A are configured to have irregularities in plan view and are in a positional discrepancy, and the shutter members 10A, 10A are automatically swung to the open position in accordance with the downward movement of the movable discharge port 5A. and others,
The bag opening 1 of the storage bag 3 is opened wide to guide the insertion of the movable discharge port 5A into the bag 3.

The sensor 37 is used to check the open position of the bag 3, and this detection operation allows the first rotation of the lowering operation lever 5a of the rotation chain 19, which will be described later. It is something.

To explain in detail the automatic bagging mechanism attached to the hopper 8 side, 16 is a first arm for raising and lowering the lifting operation lever 5a for the movable discharge port 5A, and 17 is the opening operation lever 7a for the shutter 7. It is a second arm for opening and closing operations, and 18 is an engaging member for contacting and operating a swing operation member 24 for unlocking the shutter 7 in the open state, which will be described later. The locking arm is configured to also serve as a locking arm for moving the slider 9 of the fastener 20 in the closing direction, and these are connected to the rotation chain 19 from the first position to the second position via the chain 19.
Due to the rotational movement, the first arm 16 lowers the lift operation lever 5a, the locking arm 18 brings the swing operation member 24 into contact (in this case, there is no direct action on the lock mechanism), and the second arm The opening operation of the opening operation lever 7a by the second arm 17 is performed in the order of description, and the second rotational movement from the second position to the third position via the first position causes the second arm 17 to open the opening operation lever 7a. Closing operation of the shutter 7 due to release of contact and release of the lock by contacting and swinging of the locking arm 18 against the swinging operation member 24, operation of raising the elevator operating lever 5a by the first arm 16, and slider 9 by the locking arm 18. so that the closing movement operations are performed in the order listed.
Moreover, they are integrally molded and attached so that they can be attached to the same chain link. A case 38 disposed in front of the bag outlet side of the discharge port 5
When the switch 34 detects that the rotary chain 19, which is wound and housed in the bag 3, is moved to a position below the discharge port 5 of the bag 3, the first rotary movement is automatically started, and the movable discharge port 5A into the bag opening 1 and the opening operation of the first shutter ₇ .
The rotational movement is automatically stopped, and the movable discharge port 5A
Based on the detection of the full detection switch _S2 installed in
The second rotational movement is started, the first shutter 7 is operated to close, and at this point it is temporarily stopped.
That is, a limit switch _S3 is provided to detect the swinging of the swinging operation member 24 of the locking mechanism for the first shutter 7 to the unlocked position, and the chain 19 is temporarily stopped by the operation of the limit switch _S3 . The operation of the limit switch _S3 activates a timer (not shown) in the control circuit for the entire system, and is configured to restart after a certain period of time has elapsed. By starting the chain, the movable discharge port 5A rises, and the chain 1
When the fastener 9 reaches the first position, it is temporarily stopped for a certain period of time, and restarted to perform the fastener closing operation. When the limit switch 36 detects that the slider 9 is closed during this fastener closing operation, the return rotation movement to the first position is automatically started, and the limit switch _S4
Based on the detection, the return rotation movement, etc. is automatically stopped.

As shown in FIG. 1, the screw pitch L of the threaded portion 14 is set so that the fixed end side of the support rod 4, which is the first half in the bag delivery direction, is smaller than the fixed end side of the support rod 4, which is the second half in the bag delivery direction.
The free end side is made larger, and the intermediate part between them becomes larger gradually, so that the overall pitch L changes continuously. Therefore, the eyelet 2 of the bag 3 in the standby position can be pressed and moved by the spring 12 and engaged with the threaded portion 14 relatively easily since the thread pitch L is small.

Further, since the screw pitch L of the rear half of the threaded portion 14 is set to be relatively large, a sufficient opening area of the bag 3 to insert the movable discharge port 5A into the bag opening 1 can be secured. Furthermore, since the pitch L is set to change continuously between the latter half and the first half, the bags 3 can be fed smoothly.

In addition, since the outer surface of the bag-supporting portion of the storage section 13 is formed into a smooth surface, the bag 3 can be inserted into the storage section 13 smoothly without any trouble, and since there are no threaded grooves, the bag 3 can be inserted into the storage section 13 tightly. The bags 3 can be stored in a stacked state.

[Another example]

(a) The thread groove of the threaded portion 14 is set so that the smaller the pitch L is, the shallower it is, and the larger the pitch L is, the deeper it is. Therefore, since the first half of the threaded portion 14 is shallow, there is little contact resistance between the eyelet 2 and the thread groove, making it relatively easy to transfer, and the second half is deep, so the posture regulating force against the eyelet 2 is large, and the movable discharge Insertion of the outlet 5A into the bag opening 1 becomes easier.

[Brief explanation of the drawing]

The drawings show an embodiment of the automatic grain bagging device according to the present invention, in which Fig. 1 is a side view of the support rod, Fig. 2 is a partially cutaway front view, and Fig. 3 is a longitudinal side view showing the rotary feeding mechanism. , FIG. 4 is a partially cutaway plan view. 1... Bag opening, 2... Eyelet, 3... Grain storage bag, 4... Support rod, 5... Grain discharge port, 13...
Storage section, 14...Screw section, 21...Bag feeding section, L
...Pitsuchi.

Claims (1)

[Scope of Claims] 1. A storage section 13 for holding a large number of grain storage bags 3 in a suspended state is provided on the fixed end side of the pair of left and right support rods 4, 4 for hanging bags, and the storage section 13
A bag feeding section 21 for feeding the grain storage bag toward the free end is formed at a position near the free end opposite to the fixed end, and the left and right support rods 4, 4 for hanging the bags are connected to each other. Between the support rods 4 and at a location near the free end side,
An automatic grain bagging device is provided with a grain discharge port 5 for supplying grain to an opening of a grain storage bag 3 which is inserted into and supported by the bag hanging support rods 4, 4. is the storage part 1
The outer surface of the bag supporting portion 3 is formed to be a smooth surface, and the bag feeding portion 21 has a rod shaft that engages with eyelets 2 formed at both ends of the opening of the grain storage bag 3. A threaded portion 14 is formed that forcibly feeds the bag to the free end side by rotation around the core, and the thread pitch L of the threaded portion 14 is connected to the free end of the support rods 4, 4 which are in the latter half of the bag feeding direction. Automatic bagging device for grains that is set to approximately the same size as the side. 2. The automatic grain bagging device according to claim 1, wherein the threaded portion 14 is configured such that the depth of the thread groove becomes deeper as the thread pitch L becomes larger.