JP5843276B2 - Automatic door opening and closing device for brown rice slot of coin milling machine - Google Patents

Description

  The present invention relates to a device for opening and closing a brown rice insertion slot with an automatic door in a coin rice milling machine in which a user brings brown rice and throws in a usage fee for whitening at a desired degree of milling.

  Coin rice mills that are currently popular have a brown rice slot always open. Some coin milling machines are housed in a dedicated building, and in this case, the guest can freely enter and leave the guest room in the building. For this reason, if the entrance of the building is left open, birds, insects and the like may enter, and bird droppings and insect dead bodies may enter the brown rice slot. In addition, there is a risk that a person who has no mind throws foreign objects into the brown rice slot that is always open. Then, it is not desirable for hygiene, and depending on the type of foreign matter, the rice milling machine may break down.

  Several patent applications have already been filed for the purpose of solving such problems (Patent Documents 1 and 2). In these cases, the brown rice slot opens and closes a shutter that can be raised and lowered. When waiting for a customer, the shutter is lowered to block the brown rice slot. When the usage fee is charged, the shutter rises and opens the brown rice slot. Also, when the brown rice introduced from the brown rice inlet disappears in the inlet hopper, or when the user goes out of the building after the milling is finished, the shutter is lowered to close the brown rice inlet.

Japanese Utility Model Publication No.2-222039 JP 2006-61766 A

  The conventional apparatus described above has the following problems. As soon as the shutter starts to rise after the coin is inserted, the user is likely to fall into a psychological situation where he wants to immediately insert brown rice and finish the milling as soon as possible.

  However, brown rice cannot be introduced unless the shutter is sufficiently raised and the brown rice slot is widened. This is because brown rice is contained in a bag, and brown rice cannot be introduced unless the tip of the bag is put into the brown rice slot.

  Moreover, in the technique of patent document 2, as shown in FIG. 8, the brown rice mounting base 93 which mounts the bag 92 containing brown rice is provided under the brown rice slot 91. Then, it is assumed that the brown rice containing bag 92 is placed on the brown rice mounting table 93 and the bag 92 is tilted toward the shutter 94 so as not to fall down. In such an assumed situation, if a coin is inserted, it may be overloaded when the shutter 94 is raised, and the motor that winds up the shutter 94 may break down.

  Similarly, in the technique of Patent Document 2, a chain connected to the shutter plate is wound up by a motor, a counterweight for canceling the weight of the shutter is attached, and an electric lock mechanism for maintaining a closed state is provided. The structure is complicated.

  In addition, the contact detection switch is used in the case where a hand is caught between the lower end of the shutter to be closed and the lower end of the brown rice slot. Rather, it seems that the mechanical type is preferable.

  Furthermore, it is assumed that a foreign object or a hand is involved when the shutter is raised, and it is desirable that some measures are taken in such a situation.

  The present invention has been made in consideration of the above circumstances, and aims to solve these problems as much as possible.

The present invention is an automatic door opening / closing device for brown rice input opening that opens and closes the brown rice input opening with an automatic door.

In the first aspect of the present invention, a device for milling brown rice is incorporated on the rear side of the front panel, and a control device for controlling the operation of the device is provided. It is premised on a coin rice mill that has a brown rice inlet and a white rice tank, a brown rice inlet space behind the brown rice inlet, and a inlet hopper below the brown rice inlet space.

In addition, the first aspect of the present invention includes the following (1) to (5). (1) The automatic door is swingably provided by pivotally supporting the upper end of the automatic door, and when the brown rice inlet is closed, the automatic door is suspended while using the upper end as a fulcrum. When the mouth begins to open, the lower end portion enters the brown rice throwing space while using the upper end portion as a fulcrum . (2) An overload was applied to the open / close motor as a drive source for opening / closing the automatic door, the link mechanism for converting the rotational movement of the open / close motor into a swinging movement of the automatic door, and the automatic door during opening / closing In this case, a mechanical torque limiter that blocks transmission of the overload to the open / close motor and a stopper that restricts the swing range of the automatic door are provided. (3) The opening / closing motor is fixed outside the swing range of the automatic door. (4) The link mechanism connects one end of the two linked links to the rotary shaft of the open / close motor while interposing a torque limiter, and the other end of the two links to the inner surface of the automatic door. When the link is changed from the open state to the closed state, the two links extend straight from the bent state and bend in the opposite direction. (5) When the automatic door in the closed state is pressed in the opening direction from the outside, the stopper holds the closed state of the automatic door by the collision of the link with the stopper itself.

The second aspect of the present invention has the same configuration as that of the coin milling machine , which is a premise of the first aspect . Sonouede second aspect of the present invention, the above containing the above-mentioned (1), shall include the following (6) to (8). (6) In the control device, the automatic door closing operation is canceled halfway and the return condition for returning to the original open state is started, and the automatic door closing operation and the return operation can be repeated multiple times. The number of repetitions for processing is set. (7) The start condition of the return operation is when the drive period of the opening / closing motor when the automatic door is changed from the open state to the closed state exceeds the set period. (8) When the automatic door does not close within the set period in the final set number of repetitions, the control device performs control for performing the final return operation, and opens the automatic door. Hold, and shift to a state of waiting for the next usage fee to be entered at the fee entry port.

The third aspect of the present invention is based on the second aspect . In addition, when the next usage fee is charged, the control device performs a closing process that allows the automatic door closing operation and the returning operation to be repeated a plurality of times after the rice milling process.

The fourth aspect of the present invention is based on the premise that the coin milling machine that is the premise of the first aspect is different from the coin milling machine that is the premise of the first aspect , and that a speaker is added to the matter that identifies the coin milling machine. . That is, the fourth aspect of the present invention is provided with a speaker, and a device for polishing rice brown is incorporated on the rear side of the front panel, and a control device for controlling the operation of the device is provided. It is assumed that there is a coin rice mill with a charge inlet, a brown rice inlet and a white rice tank on the front side, a brown rice inlet space behind the brown rice inlet, and a inlet hopper below the brown rice inlet space.

In addition, the fourth aspect of the present invention includes the above (1) and the following (9). (9) When starting the closing operation of the automatic door, the control device outputs a voice guidance signal for calling attention to the speaker twice, and simultaneously with the second voice guidance signal output. Or after that, the automatic door closing operation is started.

According to the present invention, when the automatic door moves from the closed state to the open state, it moves to the back side from the brown rice input port. Can reduce the time for rice milling.
Further, since the automatic door is pivotally supported at the upper end portion thereof, all the weight of the automatic door is applied to the pivotal support portion. Therefore, the opening and closing movement does not take the weight of the automatic door, and a low power output can be used as the drive source, and a simple structure can be adopted.
Furthermore, even if a bag containing brown rice leans against the automatic door, the direction in which the force is applied is the same as the opening direction of the automatic door, so it is not necessary to place a burden on the drive source of the automatic door and it is difficult to break down.

Further, according to the first aspect of the present invention, the rotational force of the opening / closing motor is transmitted from the torque limiter to the link mechanism, so that a hand or the like is sandwiched between the brown rice slot and the automatic door with a setting force greater than the torque limiter. There is nothing, and safety is high. Moreover, since the torque limiter is a mechanical type, it can be said that it is safer than an electric type.

According to the first aspect of the present invention, even if the automatic door in the closed state is forcibly pressed and opened, the automatic door in the closed state is bent in the direction opposite to the open state, The swinging range of the automatic door is regulated by the collision of the link with the stopper without being opened, so that excessive pushing-in is prevented.

According to the second aspect of the present invention, when the driving period of the opening / closing motor exceeds the set period, the closing operation of the automatic door is interrupted and returned to the original state. Troubles can be solved by pulling out the hand or the like sandwiched in between or removing foreign matter.

According to the second aspect of the present invention, the closing operation and the returning operation of the automatic door are repeated a plurality of times. Therefore, when the trouble is solved during that time, the automatic door is closed again, which is desirable in terms of hygiene. Also, if the automatic door does not close within the set period at the final set number of repetitions, the final return operation will be performed, the automatic door will be kept open, and the next use at the charge inlet Since it shifts to a state where it waits for a fee to be charged, the coin milling machine can be operated and the trouble can be solved calmly.

According to the third aspect of the present invention, when the next usage fee is charged even though the automatic door is open from the beginning at the beginning of use of the coin rice mill and is in an unsanitary state. Since the closing process that allows the automatic door closing operation and the returning operation to be repeated a plurality of times after the rice milling process is performed, the automatic door is normally closed, which is a desirable condition for hygiene.

According to the fourth aspect of the present invention, since the automatic door closing operation is started simultaneously with or after the output of the second voice guidance signal, the user can predict that the automatic door will be closed. And safety is improved.

It is explanatory drawing seen from the side which shows the rice milling procedure of a coin rice mill. It is a top view which shows the arrangement | positioning condition of the apparatus of a coin rice mill. It is a front view of the machine room seen from the guest room side. It is a front view which shows the operation panel of a control apparatus. It is a side view which shows the open / close device for brown rice inlets. It is explanatory drawing which shows the relationship between a torque limiter and a link mechanism. It is explanatory drawing which shows the state which mounted the bag containing brown rice on the brown rice stand. It is explanatory drawing which shows the opening / closing mechanism of the conventional shutter.

  An outline of the coin rice mill 1 will be described with reference to FIGS. This coin milling machine 1 is installed in a building 2, and the building 2 is partitioned into a guest room 3, a machine room 4, and a coffin room 5 by front and rear partition plates 6 a and 6 b. More specifically, the front partition plate 6 a is provided with a rectangular opening 6 c in the example of FIG. 3, and the opening 6 c is mainly a front panel 7 that constitutes the front side of the coin mill 1. It is closed.

  The machine room 4 incorporates most of the equipment for the rice milling process, that is, most of the coin milling machine 1. In the illustrated example, the inlet hopper 12, the brown rice transfer device 13, the first elevator 14, the stone removing device 15, the second elevator 16, the rice milling device 17, and the control device 11 that automatically controls the operation of these devices are the front panel 7. Built on the back side. The dredging cyclone 18 is provided in the dredging chamber 5.

  The guest room 3 includes an entrance / exit 3a and a sliding door 3b for opening / closing the entrance / exit 3a on the front surface (lower side in FIG. 2). When the sliding door 3b is opened and the cabin 3 is entered, the front panel 7 of the machine room 4 is disposed in the front. On the front side of the front panel 7, an operation panel 11a is provided. As shown in FIG. 4, the operation panel 11a constitutes a front surface portion of the control device 11, and includes a coin insertion slot 11b as a charge insertion slot, a plurality of whiteness buttons 11c having different whiteness levels, a liquid crystal display 11d, A speaker 11e is provided. When the operation is mainly performed on the operation panel 11a, the control device 11 outputs a control signal to various devices based on the operation, and the various devices are driven based on the control signal.

  In addition to the operation panel 11a, a brown rice inlet 7a and a white rice tank 19 are provided on the front side of the front panel 7 with a space left and right. In the example of FIG. 3, the white rice tank 19 is disposed at the middle height portion on the left side of the front panel 7, and the brown rice inlet 7 a is formed at the middle height portion of the front panel 7. Moreover, the brown rice insertion opening 7a is in a state of opening toward the front, and is provided in a state in which the brown rice platform 7b protrudes forward from the front panel 7 below the brown rice insertion opening 7a.

  A brown rice charging space 7c is formed at the back of the brown rice charging port 7a. The brown rice charging space 7c is formed by opening the automatic door 31, and the charging port hopper 12 is disposed below the brown rice charging space 7c. The insertion port hopper 12 is mainly composed of a funnel-shaped hopper main body 12a that is narrowed downward, and a wire mesh 12b through which brown rice passes is stretched on the upper portion of the hopper main body 12a. More specifically, the hopper body 12a is provided with a brown rice sensor 12c for detecting brown rice at the lower portion of the hopper body 12a. In addition, a brown rice transfer device 13 is provided in communication with the bottom of the hopper body 12a. When the electrostatic brown rice sensor 12c detects brown rice, the control device 11 receives the detection signal, and when the whiteness button 11c is subsequently pressed, the control device 11 removes the brown rice transfer device 13, the first elevator 14, and the stone removal. The device 15 and the second elevator 16 are driven. On the other hand, when the brown rice is lost, the control device 11 receives the brown rice no signal from the brown rice sensor 12c, and sequentially stops the brown rice transport device 13, the first elevator 14 and the stone removing device 15 after the set period has elapsed.

  The brown rice transfer device 13 houses a transfer valve 13a in a casing 13b, and rotates the transfer valve 13a in one direction by a motor (not shown). The conveyance valve 13a has a plurality of blades projecting radially around the rotation axis, and a fixed amount of brown rice is accommodated in a region defined by two adjacent blades. Brown rice for every fixed quantity is discharged | emitted from the rotating conveyance valve | bulb 13a, and is sent into the receiving port 14a of the lower part of the elevator 14 first.

  The first elevator 14 raises brown rice, and an elevator composed of a bucket conveyor is used. By driving the bucket conveyor, the brown rice thrown into the lower receiving port 14a is transported upward by the bucket and discharged from the upper discharge port 14b to the stone removing hopper 15a of the stone removing device 15.

  The stone removing device 15 is provided with a stone removing hopper 15a at an upper portion, and a sorting plate 15b for sorting brown rice and stone is disposed below the stone removing hopper 15a. This rocking motion of the sorting plate 15b and the specific gravity sorting using the wind from the fan 15c below the sorting plate sort and discard the stone from the brown rice on the sorting plate 15b. Into the receiving port 16a.

  The second elevator 16 has the same structure as the first elevator 14 and raises the brown rice to a high position by driving the bucket conveyor, and then supplies the brown rice to the rice milling device 17.

  In the rice milling device 17, an overflow sensor 17b is provided at the upper part of the rice hopper 17a, and a brown rice sensor 17c is provided at the lower part. When the brown rice sensor 17c detects brown rice, the control device 11 drives the rice milling device 17 in response to the detection signal. In addition, when the overflow sensor 17b detects brown rice, the control device 11 receives the detection signal, for example, stops the device currently driven, for example, the brown rice transport device 13, and the overflow sensor 17b stops detecting brown rice. The device stopped by the control device 11 in response to the absence signal is driven. When the brown rice is exhausted, the control device 11 receives the brown rice no signal from the brown rice sensor 17c and stops the rice milling device 17 after the set period has elapsed.

  Further, in the rice milling device 17, a polygonal cylindrical milling chamber 17d is disposed below the rice milling hopper 17a, and when a milling roll (not shown) is rotated by a motor in the milling chamber 17d supplied with brown rice. The wrinkles are scraped off by the frictional resistance. Then, white rice is discharged into the white rice tank 19 while collecting the rice cake by suction by a dehulling fan 17e disposed below the whitening chamber 17d.

  FIG. 5 shows an automatic door opening / closing device for brown rice slot according to the present invention applied to the above-described coin rice milling machine 1. The automatic door opening / closing device for the brown rice input port is an automatic door 31 for opening / closing the brown rice input port 7a, an opening / closing motor 32 serving as a drive source for opening / closing the automatic door 31, and a swinging motion of the opening / closing motor 32 to swing the automatic door 31. The link mechanism 40 that converts the motion into a transmission is mainly configured.

  The automatic door 31 is pivotally supported with its upper end portion as a fulcrum. That is, the upper end portion of the automatic door 31 is supported by the horizontal shaft 31a. The shaft 31a is supported by an inlet case 7e that constitutes a part of the front panel 7.

  The opening / closing motor 32 is fixed to the inlet case 7e at a position above the inlet hopper 12 outside the swing range of the automatic door 31.

  One end of the link mechanism 40 is connected to a rotating shaft (not shown) of the opening / closing motor 32 with a torque limiter 50 interposed therebetween. FIG. 6 shows the connection state in detail. The torque limiter 50 is a friction type in the illustrated example. More specifically, the shaft 51b of the hub 51 and the axis of the rotating shaft are made to coincide with the rotating shaft of the opening / closing motor 32 through the hub 51 with the flange 51a. Then, the friction plate 52, the motor side link 41 of the link mechanism 40, the idling bush 53, the friction plate 54, the presser plate 55, the disc spring 56, and the lock washer 57 are sequentially passed through the shaft portion 51b of the hub 51. The adjustment nut 58 is screwed into the shaft portion 51b. The presser plate 55 and the lock washer 57 are configured so that the shape of each punched hole matches the shaft portion 51 b of the hub 51 so as not to idle. More specifically, the cross section of the shaft portion 51b has a shape obtained by cutting out a part of a circle (in the example shown, the shape of a ridge is a track). The disc spring 56 pushes the presser plate 55 toward the flange 51 a of the hub 51 according to the fastening force of the adjustment nut 58. In addition, the motor-side link 41 is sandwiched between the two friction plates 52 and 54 while the idling bush 53 is fitted inside the hole 41a provided at one end of the motor-side link 41 of the link mechanism 40. Become. When the rotation shaft of the opening / closing motor 32 rotates, the motor side link 41 rotates while being sandwiched between the two friction plates 52 and 54. However, when a large force is applied to the motor side link 41 in the direction of preventing the rotation, the rotation shaft (hub 51) of the open / close motor 32 rotates, but the two friction plates 52, 54 are rotated. Thus, the motor side link 41 is idled.

  As shown in FIG. 5, the link mechanism 40 is mainly configured by connecting two links 41 and 42 with a pin joint 43. The portion of the pin joint 43 is a node of the two links 41 and 42. One link 41 is a motor side link 41, and one end thereof is connected to the open / close motor 32 with the torque limiter 50 interposed as described above. The other link 42 is a door side link 42, and the other end portion is connected to a bracket 44 projecting from an inner surface height intermediate portion of the automatic door 31 by a pin joint 45.

The link mechanism 40 in the case where the brown rice inlet 7a is opened is deeply bent in a V shape as shown by a one-dot chain line in FIG. 5, and the motor side link 41 is directed from the opening / closing motor 32 toward the door side link 42. The door side link 42 extends forward toward the automatic door 31 while extending rearward. At this time, the nodal point 43 of the link mechanism 40 is located farther from the brown rice inlet 7a than the position where the two links 41 and 42 extend in a straight line.
On the other hand, the link mechanism 40 when the brown rice inlet 7a is closed is shallowly bent into a V-shape opposite to the case where the brown rice inlet 7a is opened, as shown by the solid line in FIG. In other words, the opening / closing motor 32 further rotates in the closing direction so that the nodal point 43 of the two links 41, 42 moves closer to the brown rice inlet 7a than the state where the two links 41, 42 extend in a straight line. Then, the two links 41 and 42 are bent shallowly in the opposite direction.

  Thus, it is important that the two links 41 and 42 extend straight from the bent state and bend in the opposite direction. Assuming that the closed state of the automatic door 31 is maintained when the two links 41 and 42 are in the original bent state or in a straight line state, the automatic door 31 is forcibly pressed from the outside. The torque limiter 50 is actuated to cause the motor side link 41 to idle and the automatic door 31 to open. However, the two doors 41 and 42 are bent in opposite directions, whereby the automatic door 31 is held from the open state to the closed state. Therefore, if the automatic door 31 that has been closed is intentionally pushed open from the outside, force is transmitted to the two links 41 and 42 in an attempt to bend deeply in the opposite direction. This is contrary to the bending direction when the door 31 is opened.

  Further, a stopper 35 that regulates a swing range in the closing direction is in contact with the motor side link 41 in the closed state. This stopper 35 prevents the motor side link 41 in the closed state from further rotating in the closing direction. When the stopper 35 is not provided, when the user forcibly pushes the automatic door 31 in the closed state due to the provision of the torque limiter 50, the force is transmitted from the door side link 42 to the motor side link 41, and the motor side link 41. Tries to rotate in the direction to push the closed end detector 34 deeper. However, the presence of the stopper 35 prevents the motor side link 41 from rotating. Therefore, the stopper 35 maintains the closed state of the automatic door 31.

  In addition, in order to open and close the automatic door 31, the driving of the opening / closing motor 32 is controlled by the control device 11. The control device 11 is set with conditions for opening and closing the automatic door 31. Of these, the starting condition for the opening operation of the automatic door 31 is to insert a regular usage fee into the coin insertion slot 11b in this embodiment. Specifically, it is understood that a 100-yen coin of the usage fee has been inserted. The coin mech outputs a usage charge input signal to the control device 11. In response to this, the control device 11 outputs a rotation signal in the opening direction to the opening / closing motor 32.

  On the other hand, the starting condition for the closing operation of the automatic door 31 is that, in this embodiment, a brown rice absence signal is output from the brown rice sensor 12c of the inlet hopper 12 and the rice milling device 17 that performs the final process of the rice milling process. A stop signal (more specifically, a stop signal for a motor that rotates the whitening roll) is output. Upon receipt of these two signals, the control device 11 sends two voice signals for voice guidance to inform that the closing operation of the automatic door 31 starts when the same state continues even after the lapse of the specified time. It outputs to the speaker 11e, outputs the second audio signal, and simultaneously outputs a rotation signal in the closing direction to the opening / closing motor 32.

Moreover, as shown in FIG. 5, in order to determine the opening / closing position of the automatic door 31, the open end detector 33 and the closed end detector 34 are provided. More specifically, these detectors 33 and 34 (more specifically, microswitches) are provided outside the limit position of the swing range of the motor side link 41.
When the motor-side link 41 comes into contact with the open end detector 33, the control device 11 that has received the contact signal outputs a stop signal to the open / close motor 32 to stop the rotation of the open / close motor 32. As a result, the automatic door 31 is held open.
On the other hand, when the motor side link 41 comes into contact with the closed end detector 34, the control device 11 that has received the contact signal outputs a stop signal to the opening / closing motor 32 to stop the rotation of the opening / closing motor 32. As a result, the automatic door 31 is kept closed.

In addition, the control device 11 has a start condition for a return operation that uses the closed end detector 34 to stop the closing operation of the automatic door 31 and return it to the original open state. This return operation assumes a state in which a hand or other foreign matter is sandwiched between the brown rice slot 7a and the automatic door 31. As a starting condition for the return operation, the control device 11 is set with a period during which the open / close motor 32 is driven in the closing direction.
Specifically, during this setting period, the motor-side link 41 comes into contact with the closed-end detector 34 after the motor-side link 41 is detached from the open-end detector 33 and the open-end detector 33 detects non-contact. The period until the closed end detector 34 detects contact. It is desirable to set this setting period longer than the normal travel time. The normal travel time is the time required when the opening / closing motor 32 rotates in the closing direction and the automatic door 31 closes without stopping. By making it longer than the normal travel time, even if a trouble occurs in which a hand or the like is caught between the automatic door 31 and the brown rice slot 7a, the automatic door 31 can be closed after the trouble is quickly resolved.
If the closed end detector 34 does not come into contact with the motor side link 41 even when this set period is exceeded (when no contact signal is output), a rotation signal in the opening direction is output to the open / close motor 32. Thus, the automatic door 31 is rotated in the reverse direction, and the automatic door 31 is opened until the open end detector 33 contacts the motor side link 41. In response to the contact signal from the open end detector 33, the control device 11 rotates the opening / closing motor 32 in the reverse direction again to rotate it in the closing direction. That is, the closing operation of the automatic door 31 is performed again.

  The control device 11 is set with a number of repetitions for enabling the automatic door 31 closing operation and returning operation to be repeated a plurality of times. If the motor-side link 41 during the closing operation comes into contact with the closed end detector 34 within the set period, which is the starting condition for the return operation, until the final set number of repetitions, the return operation is performed. Without being closed, the automatic door 31 is kept closed, and a transition is made to a state of waiting for the next coin insertion (normal state). On the other hand, if the motor-side link 41 during the closing operation does not contact the closed end detector 34 within the set period, which is the starting condition for the return operation, in the final set number of repetitions, the final return is performed. When the operation is performed and the open end detector 33 comes into contact with the motor side link 41, the automatic door 31 is held in an open state, and the state shifts to a state of waiting for the next coin insertion (abnormal state). Even in the abnormal state, if the next coin is inserted, the rice milling process is performed as in the normal state. Finally, the control device 11 controls the closing operation of the automatic door 31 to perform the closing operation. Controls how many times the return operation can be repeated for the set number of times.

  The above-described coin milling machine 1 is used as follows. First, the control device 11 performs a standby process. The automatic door 31 is in a state where the brown rice slot 7a is closed in a standby state waiting for a user. When a user enters the guest room 3 and a human sensor (not shown) of the operation panel 11a detects the entry, the control device 11 that has received the detection signal outputs an audio signal to the speaker 11e. Please enter the fee. The automatic door will open when you enter the fee. "

  When a normal coin is inserted into the coin insertion slot 11b, the control device 11 performs an opening process on the automatic door 31. An insertion signal is output to the control device 11 from a coin mech (not shown), and the control device 11 drives the opening / closing motor 32 and outputs an audio signal to the speaker 11e. "When the automatic door opens, put all the rice in ”Is played. The control device 11 outputs a rotation signal in the opening direction to the opening / closing motor 32, and when the automatic door 31 opens and the open end detector 33 detects the contact of the motor side link 41, the control device 11 receives the detection signal. Stops the open / close motor 32 and keeps the automatic door 31 open.

  When the automatic door 31 is opened, the user inputs brown rice from the brown rice input port 7 a, and the brown rice is put on the input port hopper 12. Then, the brown rice sensor 12c at the bottom of the inlet hopper 12 detects the brown rice, and the control device 11 receiving the detection signal outputs an audio signal to the speaker 11e, and the message “Press the whiteness button of your choice. Press to start, "voice guidance plays. When the user presses the preferred whiteness button 11c, the control device 11 starts receiving this, and the control device 11 outputs control signals one after another, the brown rice transfer device 13, the first elevator 14, the stone. The punching device 15, the second elevator 16 and the rice milling device 17 are driven.

  The brown rice is reduced as the milling process is performed, and when the brown rice sensor 12c of the inlet hopper 12 detects that brown rice is not present, a signal indicating no brown rice is output to the control device 11. Further, when the operation of all the devices that perform the rice milling process is stopped by a control signal from the control device 11 (for example, when the rice milling device 17 is stopped last), the stop signal is output to the control device 11. The control device 11 determines that the start condition of the closing operation of the automatic door 31 is satisfied when the brown rice absence signal and the stop signal of the rice milling device 17 are aligned, and starts counting a specified time (for example, 1 minute) from that point. . If the start condition of the closing operation is satisfied even after the lapse of the specified time, the closing process of the automatic door 31 is started, and an audio signal for voice guidance for closing the automatic door 31 is output from the control device 11 to the speaker 11e. The

  Usually, the time when the brown rice in the inlet hopper 12 disappears is earlier than the operation stop time of the rice milling device 17. However, depending on the user, the brown rice sensor 12c is added so that the brown rice is added in anticipation that the brown rice disappears. A signal may be output. In addition, it is predicted that the operation of the rice milling device 17 is stopped even though the brown rice sensor 12c outputs a brown rice presence signal because the usage fee is insufficiently charged. Accordingly, the closing process of the automatic door 31 is performed only when the start condition of the closing operation is satisfied even when the specified time has elapsed.

  As a closing process of the automatic door 31, the control device 11 first outputs an audio signal to the speaker 11e, and the first voice guidance flows, “Ping pong (alarm sound), the automatic door closes. Then, after a short time, the second voice guidance with the same content flows. Simultaneously with the output of the voice signal for the second voice guidance, the control device 11 outputs a rotation signal in the closing direction to the opening / closing motor 32. Accordingly, the automatic door 31 remains open during the first voice guidance, but starts moving in the closing direction at the same time as the second voice guidance starts. When the automatic door 31 is closed, it is more likely that an accident involving a hand will occur, so that the first voice guidance alerts the user and closes the automatic door 31 simultaneously with the start of the second voice guidance. is there.

  When the automatic door 31 closes the brown rice slot 7a within a set period which is a starting condition for the return operation, the closed end detector 34 comes into contact with the motor side link 41 to output a contact signal and receives the output. 11 outputs a stop signal to the opening / closing motor 32. As a result, the opening / closing motor 32 maintains the state where the brown rice slot 7a is closed, and ends the automatic door 31 closing process. Then, the process proceeds to a standby process for waiting for the next user to insert a coin into the coin insertion slot 11b.

  In addition, as a safety measure for opening / closing control of the automatic door 31, when the automatic door 31 cannot close the brown rice slot 7a within a set period due to pinching of a hand, the returning operation of the automatic door 31 is performed. If the automatic door 31 is not closed even if the closing operation and the returning operation are repeated a plurality of times, the final returning operation is performed, and the closing process of the automatic door 31 is ended while the automatic door 31 is opened. Then, the process proceeds to a standby process for waiting for the next user to insert a coin into the coin insertion slot 11b.

  As shown in FIG. 7, even if the brown rice bag 7d is placed on the brown rice platform 7b before the 100 yen coin is inserted, the brown rice bag 7d may lean on the automatic door 31 in the closed state. When the automatic door 31 is opened, the upper portion of the brown rice bag 7d naturally enters the brown rice charging space 7c, so that the brown rice charging operation can be easily performed. Even when the automatic door 31 is being opened, if the knot 43 of the link mechanism 40 moves in a direction away from the brown rice slot 7a than the position where the two links 41 and 42 extend in a straight line. Even when the automatic door 31 is pushed in from the outside with a strong force, the torque limiter 50 acts to open the automatic door 31 at once. As a result, the open / close motor 32 is not overloaded and is not easily damaged.

  The present invention is not limited to the above embodiment. For example, the torque limiter 50 may be a mechanical type and is not limited to a friction type, and may be a ratchet type or the like. Further, the fee insertion slot is not limited to the one dedicated to 100 yen coins, but may correspond to 500 yen coins, 1000 yen bills, and the like.

Moreover, there are other start conditions for the closing operation of the automatic door 31 than the example described above. For example, among the brown rice sensors provided in the flow path from passing through the inlet hopper 12 to reaching the milling chamber 17d of the rice milling device 17, a brown rice absence signal is output from the brown rice sensor closest to the milling chamber 17d. Normally, this means that a brown rice no signal is output from the brown rice sensor 17c provided in the rice hopper 17a, and the rice milling is finished after a set time has elapsed since this brown rice no signal is output. Therefore, the closing operation of the automatic door 31 may be started after the set time has elapsed.
Other conditions for starting the closing operation of the automatic door 31 include the absence of brown rice in the inlet hopper 12, the absence of brown rice between the rice hopper 17 a of the rice hopper 12 and the rice hopper 17, and the milling process. This is a case where the device in the final process in step 2 also stops driving.

1 coin rice mill 2 building 3 guest room 3a doorway 3b sliding door 4 machine room 5 coffin room 6a partition plate 6b partition plate 6c opening 7 front panel 7a brown rice loading platform 7b brown rice loading space 7c brown rice loading space 7d brown rice containing bag 7e loading port case 11 Control device 11a Operation panel 11b Coin slot 11c Whiteness button 11d Liquid crystal display 11e Speaker 12 Slot hopper 12a Hopper body 12b Wire mesh 12c Brown rice sensor 13 Brown rice transfer device 13a Transfer valve 13b Casing 14 First elevator 14a Receptor 14b Discharge Mouth 15 Deburring device 15a Deburring hopper 15b Sorting plate 15c Fan 16 Second elevator 16a Receiving port 17 Rice milling device 17a Rice hopper 17b Overflow sensor 17c Brown rice sensor 17d Rice milling chamber 17e Removal fan 18 糠 Cyclone 19 White rice tank 31 Automatic Door 31a shaft 32 open / close motor 33 open end inspection Vessel 34 closed end detector 35 stopper 40 link mechanism 41 links (motor side link)
41a hole 42 link (door side link)
43-pin joint (nodal point)
44 bracket 45 pin joint 50 torque limiter 51 hub 51a flange 51b shaft 52 friction plate 53 idling bush 54 friction plate 55 presser plate 56 disc spring 57 lock washer 58 adjustment nut

Claims (4)

With the rear side of the front panel are incorporated devices that make rice processing brown rice, a control device for controlling the operation of the equipment, provided with a front fee inlet and brown rice inlet to side and white rice tank front panel In the coin rice mill that has a brown rice loading space behind the brown rice loading opening and a loading hopper below the brown rice loading space, it is an automatic door opening and closing device for brown rice loading opening that opens and closes the brown rice loading opening with an automatic door. There,
The automatic door is swingably provided by pivotally supporting the upper end of the automatic door. When the brown rice inlet is closed, the automatic door is suspended while using the upper end as a fulcrum, and the brown rice inlet is opened. When starting, the lower end of the upper end portion enters the brown rice throwing space while the upper end portion is used as a fulcrum,
An open / close motor that is the drive source for opening and closing the automatic door, a link mechanism that converts the rotational movement of the open / close motor into a swinging movement of the automatic door, and when the automatic door is overloaded. A mechanical torque limiter that blocks transmission of overload to the open / close motor and a stopper that regulates the swing range of the automatic door,
The open / close motor is fixed outside the swing range of the automatic door,
The link mechanism connects one end of two knotted links to the rotary shaft of the open / close motor while interposing a torque limiter, and the other end of the two links to the inner surface of the automatic door. The two links extend straight from the bent state and bend in the opposite direction when closed from
When the closed automatic door is pressed in the opening direction from the outside, the stopper is used for the brown rice slot of the coin milling machine, where the link collides with the stopper itself to keep the automatic door closed . Automatic door opening and closing device. The rear panel of the front panel is equipped with a machine for milling brown rice, equipped with a control device for controlling the operation of the machine, and equipped with a charge inlet, a brown rice inlet and a white rice tank on the front side of the front panel. In the coin rice mill that has a brown rice loading space behind the brown rice loading opening and a loading hopper below the brown rice loading space, it is an automatic door opening and closing device for brown rice loading opening that opens and closes the brown rice loading opening with an automatic door. There,
The automatic door is swingably provided by pivotally supporting the upper end of the automatic door. When the brown rice inlet is closed, the automatic door is suspended while using the upper end as a fulcrum, and the brown rice inlet is opened. When starting, the lower end of the upper end portion enters the brown rice throwing space while the upper end portion is used as a fulcrum,
The control device includes a start condition for a return operation that interrupts the automatic door closing operation and returns to the original open state, and a closing process that allows the automatic door closing operation and the return operation to be repeated multiple times. The number of repetitions is set,
The start condition of the return operation is when the driving period of the opening / closing motor when the automatic door is changed from the open state to the closed state exceeds the set period.
When the automatic door does not close within the set period at the final set number of repetitions, the control device controls the return operation of the final round, keeps the automatic door open, and next to the charge inlet The automatic door opening and closing device for the brown rice slot of a rice milling machine is characterized in that it shifts to a state of waiting for the usage fee to be charged . Controller, if the next usage fee is turned on, according to claim 2, characterized in that the closing process that allows to repeat several times the closing operation and the return operation of the automatic door after rice processing Automatic door opening and closing device for brown rice slot of coin-cooking machine. A device with a speaker and a rice milling process for brown rice is installed on the back side of the front panel, as well as a control device for controlling the operation of the device, and a charge inlet and a brown rice inlet on the front side of the front panel. In a rice milling machine equipped with a brown rice tank, with a brown rice slot at the back of the brown rice slot, and with a slot hopper below the brown rice slot, it opens and closes the brown rice slot with an automatic door. An automatic door opening and closing device,
The automatic door is swingably provided by pivotally supporting the upper end of the automatic door. When the brown rice inlet is closed, the automatic door is suspended while using the upper end as a fulcrum, and the brown rice inlet is opened. When starting, the lower end of the upper end portion enters the brown rice throwing space while the upper end portion is used as a fulcrum,
When starting the closing operation of the automatic door, the control device outputs a voice guidance signal for calling attention to the speaker twice, and at the same time or after the output of the second voice guidance signal. An automatic door opening and closing device for a brown rice slot of a coin rice mill characterized by starting an automatic door closing operation .

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