JP4618428B2 - Shutter manual closing device for automatic grain weighing machine - Google Patents

Description

  The present invention relates to a shutter manual closing device for automatically and temporarily closing a shutter to prevent outflow scattering of grains in an abnormal state in an automatic grain weighing machine. It is possible.

  As a supply shutter for the automatic grain weighing machine, a shutter provided at the supply port at the lower part of the storage tank, a shutter arm pivotally attached to the support attached to the lower part of the storage tank, and a set amount of the weighing scale It consists of a reciprocating member that operates via a solenoid by metering. The reciprocating member is connected to a shutter arm, and the shutter arm is retreated with the upper end as a fulcrum, and the shutter arm is separated from the shutter side. In some cases, the supply port is switched to fully closed, partially opened, or fully closed. In the supply shutter of this automatic grain weighing machine, a mechanism that fully closes the shutter other than during weighing is attached to prevent the entry route of the rat after weighing work, or it remains stuck in the storage tank etc. Various measures are taken to prevent scattering from the supply port.

In Patent Documents 1 to 8, a power switch provided on an operation panel is electrically connected to the solenoid, and the solenoid is energized by an “OFF” operation of the power switch to retract the shutter arm via a reciprocating member. The supply port is fully closed by detachment from the shutter side. This ensures that the supply port is fully closed at the end of work other than weighing, but when the supply port is fully closed urgently during weighing work, each time the power switch is turned off, the solenoid is turned off. A mechanism for fully closing the supply port quickly by a simple operation by hand is desired.

The automatic grain weighing machine described in Patent Documents 9 and 10 has a manual operation lever in a closing solenoid for closing a shutter as a mechanism for fully closing a supply port urgently and easily even during weighing work. Is provided. In this device, one end of the manual operation lever is pivotally supported by a shaft support portion fixed to a support body of the closing solenoid, and an intermediate portion of the manual operation lever is inserted into a rear portion of the closing solenoid. The movable solenoid is engaged with the movable member of the closing solenoid via a spring, and the other end of the manual operation lever is extended long. As a result, the operator only needs to pull the manual operation lever by hand, the shutter is urgently and temporarily closed, the supply port is fully closed, and the delivery of cereals can be stopped.

However, in the shutter closing device using the manual operation lever, the manual operation lever is engaged with the manual operation lever, the shaft support fixed to the support body of the closure solenoid, and the movable member at the rear of the closure solenoid. However, there is a problem that the structure is complicated and the manufacturing cost is high.
Japanese Patent Laid-Open No. 11-278436 JP 11-278437 A JP-A-11-278438 JP-A-11-287695 Japanese Patent No. 3068784 JP 2000-053101 A Japanese Patent No. 3142843 JP 2003-205902 A Japanese Patent No. 3326711 Japanese Patent No. 3368534

  In view of the above problems, the present invention provides a shutter manual closing device in an automatic grain weighing machine that can reduce the cost with a simple configuration, rather than forcibly pulling a movable member of a closing solenoid. It is in.

In order to solve the above-mentioned problems, the invention of claim 1 is characterized in that a supply port provided to fill a grain bag with cereals in a lower part of a storage tank, a shutter pivotally attached to the supply port, and rotating the shutter An opening holding mechanism provided to hold the supply port in the open position, and the opening holding mechanism includes an engagement piece provided on an outer edge of the shutter and an engagement for engaging the engagement piece. In an automatic grain weighing machine comprising an arm and a solenoid that moves the engagement arm to release the engagement piece and closes the shutter, the engagement arm is a fixed support shaft A support portion rotatably supported by the arm, a claw portion at the arm tip portion that engages with the locking piece, a link portion that is connected to the movable member of the solenoid, and the claw portion and the locking piece. in order to manually release the engagement between the around the said support shaft To arcuate locus section draws, the engagement if there is an angle formed by the coupling arm in the tangential direction is substantially perpendicular integrally a manual closure from the claw portion is extended toward the solenoid mounting side I took the technical means of forming.

Further, the invention according to claim 2 is characterized in that the manual closing portion forms an arc-shaped handle portion at a tip portion thereof.

  According to the first aspect of the present invention, when the operator wants to close the supply port urgently during the weighing operation, when the operator performs an operation of lightly pushing the manual closing portion upward with a finger, the nail portion and the locking piece are locked. Is released. As a result, the shutter immediately turns and the supply port is closed. That is, the shutter can be manually closed with a simple configuration in which the manual closing portion is integrally provided on the engagement arm. For this reason, there is an advantage that the number of parts of the manual closing mechanism can be reduced and the cost can be reduced.

Then , when the operator performs an operation of lightly pushing the manual closing part upward with a finger, the engaging arm generates a rotational force along the arcuate locus S around the support shaft, and accordingly, the movable member of the solenoid Is moved in the contracting direction, and the locking between the claw portion and the locking piece is released with a slight force. When the locking of the locking piece is released, the shutter immediately turns and the supply port is closed. At this time, if the angle formed by the manual closing portion and the engagement arm is an acute angle, it is difficult to convert the upward pressing force into a rotational force along the arcuate locus S, and the angle formed by the manual closing portion and the engagement arm. If the angle is obtuse, the finger hooking becomes worse and it becomes difficult to apply an upward pressing force.

According to the second aspect of the present invention, it is easy to hook the finger, and the locking operation between the locking piece and the claw portion can be reliably performed.

  Hereinafter, the shutter manual closing device in the automatic grain weighing machine of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of an automatic grain weighing machine equipped with a vertical grain sorter, FIG. 2 is a front view thereof, and FIG. 3 is a left side view thereof.

In FIG. 1 thru | or FIG. 3, the grain automatic weighing machine 1 provided with the vertical type grain sorter has the sorting part comprised in the housing | casing 2 by the rotation sorting cylinder and the rotation spiral body built in it. A rotating spiral body and a rotating sorting cylinder are rotated in the same direction and at different speeds by a gear motor to sort sized grains and immature grains while feeding the grains. The sorting rate is adjusted by controlling the number of rotations of the rotating spiral or by selecting a rotating sorting cylinder having a different mesh width.

Reference numeral 3 denotes a cereal input hopper, and reference numeral 4 denotes a cereal sensor for confirming whether or not cereal is input. Reference numeral 5 denotes a tank for temporarily storing the selected grain. The inside of the tank 5 is formed in the funnels 5a and 5b, and a supply port for supplying the grain to the grain bag 12 is provided below the tank 5 6 is provided. The supply port 6 is provided with a gate-shaped shutter that can be manually opened in a fan shape when viewed from the side. For example, a two-stage shutter including a large throw shutter 7 and a small throw shutter 8 is pivotally mounted. . A pivot 9 is inserted into the tops of the large throw shutter 7 and the small throw shutter 8 and is configured to be rotatable around the pivot 9. Reference numeral 10 denotes a handle portion that is fixed to the small throwing shutter 7 and manually opens the supply port 6, and reference numeral 11 denotes a supply rod for guiding the grains to the grain bag 12.

Reference numeral 13 denotes an opening holding mechanism for the large throw shutter 7 and the small throw shutter 8, and a locking piece provided on the large throw shutter 7 and the small throw shutter 8, and the large throw shutter 7 and the small throw shutter are opened. An engagement arm that locks the locking piece so as to be held at a distance, and a solenoid that releases the locking of the locking piece.

Reference numeral 14 is a residual rice discharge basket, reference numeral 15 is a garbage receiving box fitted in the housing 2, reference numeral 16 is a moving wheel, reference numeral 17 is a fixed leg, reference numeral 18 is a measuring instrument, reference numeral 19 is a fixing leg for a measuring instrument, Reference numeral 20 denotes a residual rice discharge lever after the sorting operation, reference numeral 21 denotes an overflow discharge rod, reference numeral 22 denotes a metering control board, reference numeral 23 denotes a gear motor rotation speed control board, and reference numeral 24 denotes a safety cover covering the opening holding mechanism 13. Reference numeral 38 denotes a waste particle discharging rod.

4 is an enlarged explanatory view of the opening holding mechanism 13 with the safety cover 24 removed, and FIG. 5 is an enlarged part view of the engagement arm. The structure of the opening holding mechanism 13 will be described in detail with reference to these drawings (only the large holding opening holding mechanism 13 is shown in FIG. (Abbreviated as (b)).

A supply chute 5c is connected to the lower part of the funnels 5a and 5b of the tank 5 for temporarily storing the grain, and a bracket 25 for bearing the pivot 9 is fixed to the supply chute 5c. Then, the large throw shutter 7 having a slightly narrower width than the small throw shutter 8 is overlapped inside, and the large throw shutter 7 and the small throw shutter 8 are slidably supported by the supply port 6 via the pivot 9. Let Further, a lever 26 is integrally fixed to the upper end portion 7a of the large throw shutter 7, and a handle portion 10 is provided at the tip of the lever. When the handle portion 10 is held to rotate downward, the rear end edge 7b of the large closing shutter 7 comes into contact with the engaging convex edge 8a of the small closing shutter 8, so that the small closing shutter 8 together with the large closing shutter 7 is provided. Will be opened.

Locking pieces 27a and 27b are provided on the outer edges of the large closing shutter 7 and the small closing shutter 8, and swingable engaging arms 28a and 28b for engaging and holding the locking pieces 27a and 27b, Solenoids 29a and 29b for releasing the locking of the locking pieces 27a and 27b by rotating the engaging arms 28a and 28b are provided. Reference numeral 30 denotes a solenoid mounting bracket fixed to the funnel portion 5a.

The configuration of the engagement arms 28a and 28b will be described in detail. The engagement arms 28a and 28b include support portions 32a and 32b supported by support shafts 31a and 31b fixed to the funnel portion 5a of the tank 5. The claw portions 33a, 33b that engage with the locking pieces 27a, 27b at the end of the arm, the link portions 34a, 34b in the middle of the arm, and the claw portions 33a, 33b, Manual closing portions 35a and 35b for manually releasing the locking between the claw portions 33a and 33b and the locking pieces 27a and 27b are integrally formed. The manual closing portions 35a and 35b are substantially perpendicular to the arcuate locus S drawn by the claw portions 33a and 33b with the support shafts 31a and 31b as the center. And extending to the solenoid mounting side (see FIG. 5). When the angle formed by the manual closing portions 35a and 35b and the engagement arms 28a and 28b becomes an acute angle, it is difficult to convert the upward pressing force into a rotational force along the arcuate path S, and the engagement arm 28a. , 28b becomes an obtuse angle, the finger hooking becomes worse and it is difficult to apply an upward pressing force.

  Further, the manual closing portions 35a and 35b are formed with arc-shaped handle portions 37a and 37b so that the front end portions can be easily hooked with fingers. Further, the length of the manual closing portions 35a and 35b may be a length protruding from the safety cover 24, but is preferably in the range of 30 to 50 mm from the viewpoint of handling.

The solenoid mounting bracket 30 is provided with large input and small input solenoids 29a and 29b in the horizontal direction, and the movable members 36a and 36b of the solenoids 29a and 29b are interposed via the link portions 34a and 34b. Are connected to the engaging arms 28a, 28b. A compression spring 39 is provided at the rear end of the solenoid 29. When the solenoid 29 is "OFF", the urging force of the compression spring 39 acts to extend the movable member 36. When the solenoid 29 is "ON", the movable member 36 is extended. Shrink. When the movable member 36a contracts, the locking piece 27a of the large throwing shutter 7 is unlocked, and then when the movable member 36b contracts, the locking piece 27b of the small throwing shutter 8 is unlocked. It will be.

Next, a specific operation in the above configuration will be described. A rotary sorting cylinder suitable for the cereal to be selected is installed in advance, the power is turned on by the control panel 22 for weighing, and the gear motor is started. For example, the brown rice is removed from the brown rice discharge pipe (not shown) of the rice grinder. When fed into the feeding hopper 3, the brown rice is sorted into sized grains, immature grains, etc. by a rotating sorting cylinder while being sequentially fed by a rotating spiral. The sized particles that do not leak from the mesh of the rotating sorting cylinder and reach the upper end by the rotating spiral are put into the tank 5 by the scraping blades, while the immature grains leaked from the mesh of the rotating sorting cylinder are lifted by a screw conveyor or the like. Then, it is taken out from the waste particle discharge basket 38.

  The sized particles temporarily stored in the tank 5 are then weighed and packed. First, when the operator holds the handle 10 and rotates downward, the rear end edge 7b of the large closing shutter 7 comes into contact with the engaging convex edge 8a of the small closing shutter 8, and together with the large closing shutter 7, the small closing shutter. 8 is opened, and the sized particles fall from the supply port 6 and are put into the grain bag 12 placed on the measuring device 18. A weighing set value is set in the weighing control panel 22 in advance. When the weighing signal from the measuring instrument 18 approaches the weighing set value (for example, 1.5 kg before the weighing set value), first, the solenoid 29a is turned on. When the movable member 36a is contracted by operation, the locking piece 27a of the large throwing shutter 7 is unlocked, the large throwing shutter 7 is rotated by its own weight, the supply port 6 is closed, and the small throwing is performed. Will continue. When the weighing signal from the weighing instrument 18 reaches the weighing set value, the movable member 36b is contracted by the operation of the solenoid 29b, the locking of the locking piece 27b of the small charging shutter 8 is released, and the small charging shutter is released. 8 is rotated by its own weight, the supply port 6 is completely closed, and weighing / packing for one bag is completed.

By the way, when something other than the grain bag 12 is placed on the weighing instrument 18 during weighing, or when it is noticed that the dedicated bag stand is not used, or the weighing set value is not set correctly, etc. Even during the weighing operation, the supply port 6 may be closed urgently to interrupt the weighing operation. At that time, according to the shutter manual closing device in the automatic grain weighing machine, the supply port 6 can be fully closed by an urgent and simple operation. That is, when the operator performs an operation of lightly pushing the manual closing portions 35a and 35b (see FIGS. 3 and 4) protruding from the safety cover 24 covering the opening holding mechanism 13 upward with a finger (see the bold arrows in FIG. 3). The engaging arms 28a and 28b generate a rotational force along the arcuate locus S centering on the support shafts 31a and 31b, and are moved in a direction in which the movable members 36a and 36b are contracted. Thus, the locking of the claw portions 33a, 33b and the locking pieces 27a, 27b is released. When the locking of the locking pieces 27a and 27b is released, the shutters 7 and 8 are immediately turned and the supply port 6 is closed.

Further, the manual closing portions 35a and 35b are formed with arc-shaped handle portions 37a and 37b at the tips thereof, so that they can be easily hooked with fingers, and the locking pieces 27a and 27b can be reliably unlocked. it can. Note that the opening holding mechanism 13 is covered with a safety cover 24, and there is no possibility that an operator will accidentally pinch a finger when the shutter is closed, thereby improving safety.

  Then, when the supply of brown rice from the rice huller stops, the grain sensor 4 provided in the input hopper 3 detects “nothing” in the brown rice, determines that the operation is finished in the control panel 22 for weighing, and turns the gear motor Control to make high speed rotation. As a result, the rotating spiral body and the rotating sorting cylinder are rotated at a high speed, and the residual rice staying between the rotating spiral body and the rotating sorting cylinder is forcibly sent into the tank 5.

In addition, when the residual rice discharge lever 20 is slid up and down at the end of the operation, the residual rice staying at the bottom of the rotary spiral body and the rotary sorting cylinder is taken out from the residual rice discharge basket 14 to the outside of the machine.

As described above, according to the automatic grain weighing machine according to the present invention, the engagement arm 28 is provided at the support portion 32 that is rotatably supported by the fixed support shaft 31 and the arm tip portion, and A claw portion 33 that engages with the locking piece 27, a link portion 34 that connects to the movable member 36 of the solenoid 29, and an extension between the claw portion 33, and the engagement between the claw portion 33 and the locking piece 27. Since the manual closing portion 35 for manually releasing the stop is integrally formed, when the operator performs an operation of lightly pushing the manual closing portion 35 upward with a finger, the claw portion 33 and the locking piece 27 The lock is released, and the shutter is immediately turned to close the supply port. That is, the shutter can be manually closed with a simple configuration in which the manual closing portion 35 is integrally provided on the engagement arm 28. For this reason, there is an advantage that the number of parts of the manual closing mechanism can be reduced and the cost can be reduced.

  Further, the manual closing portion 35 is in a tangential direction in which an angle formed with the engagement arm 28 is substantially perpendicular to the arcuate locus S drawn by the claw portion 33 with the support shaft 31 as a center, and Since it extends to the solenoid 29 mounting side, when the operator performs an operation of lightly pushing the manual closing portion 35 upward with a finger, the engagement arm 28 has an arcuate locus S centering on the support shaft 31. Accordingly, the movable member 36 is moved in a contracting direction, so that the locking of the claw portion 33 and the locking piece 27 is released with a slight force, and the shutter immediately rotates. Thus, the supply port 6 is closed.

Further, the manual closing portion 35 may be formed on the arc-shaped handle portion 37 so that the front end portion can be easily caught by a finger.

  INDUSTRIAL APPLICABILITY The present invention can be applied to weighing devices having a gate-shaped shutter, such as an automatic cereal weighing machine with a flow-down type cereal grain sorter, and an automatic grain weighing machine having only a tank unit without a sorter.

It is a perspective view of the grain automatic weighing machine provided with the vertical type grain sorter. It is the same front view. It is the left side view. It is an expansion explanatory view of the opening maintenance mechanism in the state where the safety cover was removed. It is an enlarged component figure of an engagement arm.

DESCRIPTION OF SYMBOLS 1 Grain automatic weighing machine 2 Case 3 Input hopper 4 Grain sensor 5 Tank 6 Supply port 7 Large input shutter 8 Small input shutter 9 Axis 10 Handle part 11 Supply basket 12 Grain bag 13 Opening holding mechanism 14 Residual rice discharge basket 15 Garbage Receiving box 16 Moving wheel 17 Fixed leg 18 Measuring instrument 19 Measuring instrument fixed leg 20 Residual rice discharging lever 21 Overflow discharge rod 22 Weighing control panel 23 Speed control panel 24 Safety cover 25 Bracket 26 Lever 27 Locking piece 28 Engagement Joint arm 29 Solenoid 30 Solenoid mounting bracket 31 Support shaft 32 Support part 33 Claw part 34 Link part 35 Manual closing part 36 Movable member 37 Arc-shaped handle part 38 Grain discharge rod 39 Compression spring

Claims (2)

In order to hold the supply port in the open position by rotating the shutter, the supply port provided in the lower part of the storage tank for filling cereal bags with grains, the shutter pivotally attached to the supply port An opening holding mechanism provided on the outer edge of the shutter; an engagement arm that locks the locking piece; and a mechanism that moves the engagement arm to move the engagement arm. In the automatic grain weighing machine configured to release the locking of the stop piece, and the solenoid that closes the shutter,
The engagement arm includes a support portion that is rotatably supported by a fixed support shaft, a claw portion that is provided at the end of the arm and engages with the locking piece, and a link that is coupled to the movable member of the solenoid. And the engagement arm with respect to the arc-shaped locus drawn by the claw portion around the support shaft so as to manually release the engagement between the claw portion and the engagement piece. A shutter manual closing device for an automatic grain weighing machine , wherein a manual closing portion extending in a tangential direction at a right angle and extending from the claw portion toward the solenoid mounting side is integrally formed. The manual closure, the shutter manually closing device in cereals automatic weighing machine made by forming an arcuate grip portion according to claim 1, wherein in its distal end.

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