JPH0733125A - Automatic bag-packing device - Google Patents

Abstract

PURPOSE:To provide an automatic bag-packing device for which the replenishment of bags is properly and easily performed by making the detachment of a cassette possible only when the sequence motions of respective mechanisms are stopped. CONSTITUTION:Bags which are stored in a bag-storage mechanism 10 are carried in by a bag-carrying in mechanism 20 one by one, and supported by a bag-supporting mechanism 30. Then, a specified quantity of ice is packed in the bag, and the packed bags are accumulated in a stocker. When a user turns on a lock releasing switch in order to replenish bags, a microcomputer controls a cassette 11 under a set-released condition after the dropping motion of a bag. At the same time, the sequence control for respective mechanisms is stopped. By this method, after the dropping motion of a bag, the operation sequence of 1 cycle of an automatic bag-packing device is completed, and the motions of respective mechanisms are stopped, and therefore, bags can be safely fitted in the cassette 11 without causing trouble in the operations of respective mechanisms. Also, when the cassette 11 after the fitting of the bags is returned to a set condition, the microcomputer resumes the sequence control, and at the same time, controls a locking mechanism 16 under a locked condition again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic bagging apparatus for automatically bagging a predetermined amount of articles such as ice and accumulating them sequentially in a stocker.

[0002]

2. Description of the Related Art Conventionally, a device of this type has a bag storing mechanism having a detachable cassette containing a large number of bags, as shown in, for example, US Pat. No. 5,109,751. A bag loading mechanism for loading bags one by one from a bag storage mechanism to a predetermined position, a bag support mechanism for expanding and supporting the upper opening of the loaded bag, and a support for sequentially transporting the items stored in the tank. Loading mechanism for loading into the filled bag, weighing mechanism for measuring the amount of the product loaded into the bag, sealing mechanism for sealing the upper portion of the bag loaded with the product, and the sealed bag in the stocker It is equipped with a drop mechanism for dropping and an electric control device for controlling the operation of each mechanism,
The electric control device carries in the bag by the bag carry-in mechanism, puts the product in the bag until the measuring mechanism detects a predetermined amount of the product, puts the product in the bag, and seals the bag by the sealing mechanism. By repeatedly controlling the sequence operation including the dropping operation of the bags by the dropping mechanism, the bags of the predetermined amount are sequentially packed, and the bags filled with the products are sequentially accumulated in the stocker.

[0003]

However, in the above-mentioned conventional apparatus, since the cassette is always removable, during the bag loading operation by the bag loading mechanism, the item loading operation by the loading mechanism, and the sealing mechanism. If the cassette is removed from the set state in order to refill the bag during the bag sealing operation by the, the bag dropping operation by the drop mechanism, or the like, the operation of each mechanism may be hindered. The present invention has been made to solve the above problems, and an object of the present invention is to provide an automatic bag filling device that allows a bag refilling operation to be properly and easily performed.

[0004]

In order to achieve the above object, the structural feature of the invention according to claim 1 is that a plurality of bags are accommodated in a set state and the set state is removed. The bag storage mechanism having a detachable cassette that allows the mounting of bags, the bag loading mechanism that loads the bags from the cassette to the predetermined position one by one in the set state of the cassette, and the bag that has been loaded. A bag support mechanism that expands and supports the upper opening, a loading mechanism that sequentially conveys the items contained in the tank and loads them into the supported bag, and a weighing mechanism that measures the amount of the items loaded into the bag. A sealing mechanism that seals the upper part of the bag into which the item is loaded, a drop mechanism that drops the sealed bag into the stocker, a bag loading operation by the bag loading mechanism, and a predetermined amount of the item is detected by the weighing mechanism. Bags until An electric control device having sequence control means for repeatedly controlling a sequence operation including a loading operation of a loading mechanism by a loading mechanism, a bag sealing operation by a sealing mechanism, and a bag dropping operation by a dropping mechanism. In an automatic bagging device that sequentially packs items and stores the packed bags in the stocker sequentially, a lock mechanism that locks the cassette in the bag storage mechanism in the set state is provided, and the electric control device is operated. The switch and the sequence control means are normally allowed in the first state to perform the sequence operation, control the lock mechanism to the lock state, and when the operation switch is operated, the switch is switched to the second state and at a predetermined timing during the sequence operation. While stopping the sequence operation by the sequence control means, In the provision and stopping control means for controlling the mechanism in the unlocked state.

Further, the constitutional feature of the invention according to claim 2 is that in the invention according to claim 1, the bag storing mechanism is provided with a detecting means for detecting that the cassette is in a set state, and The control device further includes return control means for returning the stop control means to the first state in response to the detection by the detection means.

[0006] Further, the constitutional feature of the invention according to claim 3 is that in the invention according to claim 1, stop control means is provided after a predetermined time elapses after the operation switch is operated in the electric control device. There is provided a return control means for returning to the first state.

Further, the constitutional feature of the invention according to claim 4 is that in the invention according to claim 1, the electric control device further includes a stop control means for controlling the lock mechanism to an unlocked state. The recovery control means for returning the stop control means to the first state after a predetermined time has elapsed is provided.

[0008]

In the invention according to claim 1 configured as described above, the stop control means is normally set to the first state to permit the sequence operation of each mechanism by the sequence control means and to lock the mechanism. The mechanism is controlled to the locked state to prevent the cassette from being removed from the set state. Further, when the operation switch is operated, the stop control means is switched to the second state, waits until a predetermined timing during the sequence operation to stop the sequence operation by the sequence control means, and brings the lock mechanism into the unlocked state. Control. As a result, according to the present invention, the cassette can be attached and detached only when the sequence operation of each mechanism is stopped, so that the bag can be refilled safely and without disturbing the operation of each mechanism.

Further, in the invention according to claim 2 configured as described above, if the user sets the cassette after refilling the bag, the detecting means detects the set state, and the detecting means detects the state. In response, the return control means returns the stop control means to the first state, so that the sequence operation by the sequence control means is permitted and the lock mechanism is controlled to the locked state. As a result, according to the present invention,
After refilling the bags, the bag filling by the automatic bag filling device can be automatically restarted.

Further, in the invention according to claim 3 configured as described above, when a predetermined time elapses after the operation switch is operated, the return control means sets the stop control means to the first control means.
Since the state is returned to the state, the sequence operation by the sequence control means is allowed and the lock mechanism is controlled to the locked state. Thus, according to the present invention, after the operation switch is operated, even if the user does not refill the bag forever, it is possible to automatically restart the bag filling by the automatic bag filling device.

Further, in the invention according to claim 4 configured as described above, when a predetermined time elapses after the control means starts controlling the lock mechanism to the unlocked state, the return control means controls the stop control means to be the first control means. Since the state is returned to the state, the sequence operation by the sequence control means is allowed and the lock mechanism is controlled to the locked state. Thus, according to the present invention as well, even if the user does not refill the bag forever after operating the operation switch, the bag filling by the automatic bag filling device can be automatically restarted. Further, according to the present invention, even if it takes a long time from the operation of the operation switch to the time when the stop control means starts controlling the lock mechanism to the unlocked state, sufficient time for refilling the bag can be taken. You can

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an ice making bag filling machine according to the present invention in an external front view. This ice making bag filling machine comprises a pair of left and right ice making machines A1 and A2 arranged in an upper stage, an automatic ice bagging device B arranged in a middle stage, and an opening / closing door C on a front face arranged in a lower stage.
1 and C2, and a stocker (freezer storage) C. Each of the ice making machines A1 and A2 repeats the ice making process and the deicing process at a predetermined cycle, automatically generates ice of a predetermined shape at a predetermined speed in the ice making process, and automatically drops the ice in the deicing process. And supplies it to an automatic ice bagging device B arranged below, for example, US Pat. No. 4,79.
What is shown in the specification of 1,792 can be used.

As shown in FIGS. 2 to 6, the automatic ice bagging apparatus B is arranged on the front side of the central portion of the apparatus B and stores a bag storing mechanism 10 for storing a large number of bags F and a bag storing mechanism. A bag loading mechanism 20 provided at the rear of the bag 10 for loading the bags F into the predetermined position one by one from the mechanism 10, and a bag loading mechanism 20 arranged above the bag storage mechanism 10 and the bag loading mechanism 20. In cooperation with the bag supporting mechanism 30 for expanding and supporting the upper opening of the bag F as shown by the phantom line in FIG. 2, the ice making machines A1 and A2 arranged on the left and right of the bag supporting mechanism 30. A pair of left and right ice accommodating and inputting mechanisms 40A and 40B that store the generated ice and that put the ice into the opened bag F,
A sealing mechanism 50 for sealing the upper portion of the bag F filled with a predetermined amount of ice, and a bag F arranged below the bag supporting mechanism 30.
The bag dropping mechanism 60 slides the ice packed and sealed in the stocker C into the stocker C, and the weighing mechanism 70 integrally assembled to the bag dropping mechanism 60 to measure the ice packed in the bag F. ing.

As shown in FIGS. 4, 8 and 9, the bag accommodating mechanism 10 is provided with a cassette 11 for accommodating a large number of bags F, which is formed in a rectangular parallelepiped shape with the back surface and the lower surface opened. The cassette 11 is rotatably assembled to the frame 91 by the shaft 12 fixed to the lower end, and holding pins 13 and 14 for holding the bag F and the erroneous assembly of the bag F on the upper end of the inner surface thereof are prevented. The direction designating pin 15 for doing is fixed. The holding pins 13 and 14 are formed in a hollow shape, and the notch 13 is formed by cutting out the lower half of the tip portion.
a and 14a. The thus configured cassette 11 can be attached and detached by the lock mechanism 16 assembled to the frame 91. As shown in FIG. 7, the lock mechanism 16 includes a lock pin 16a that is urged downward by a spring (not shown) and a lock pin 16a that is energized.
and an electromagnetic solenoid SOLE for displacing a upward. When the electromagnetic solenoid SOLE is not energized, the lock pin 16a protrudes from the cassette 11.
It is prohibited to incline the cassette 11 in the standing state (set state), which has entered the hole 11a1 provided in a, to the front. However, the tip of the lock pin 16a is provided with an inclination, and when the cassette 11 tilted forward is raised, the lock pin 16a is pushed by the projecting piece 11a of the cassette 11 and is displaced upward. Therefore, the cassette 11 can be erected without energizing the electromagnetic solenoid SOLE. On the other hand, when the electromagnetic solenoid SOLE is energized, the lock pin 16a is pulled out upward from the hole 11a1, so that the cassette 11 in the upright state can be tilted forward. When the cassette 11 is in the upright state, the bag F can be carried in backward, and when the cassette 11 is tilted forward (when the set state of the cassette 11 is removed), the bag F is attached to the pins 13 to 15. It can be installed. A detection switch SW1 for detecting the set state of the cassette 11 is attached to the frame 91. The switch SW1 is turned on when the cassette 11 is in the set state and turned off when the cassette 11 is not in the set state. is doing. Each bag F is made of a transparent synthetic resin such as polyethylene which is melted by heat, and as shown in FIG.
The bottom part is woven inward so that it will partially extend downward when it contains ice. On the front side surface of the upper end opening portion of the bag F, mounting holes Fa1 and Fa for the pins 13 to 15 are formed.
A mounting piece Fa having 2, Fa3 is formed.

The bag carry-in mechanism 20 is shown in FIGS.
As shown in FIG. 13, a pair of shafts 21 fixed to the lower ends
A gate-shaped main arm 21 is attached to the frame 91 so as to be tiltable at a and 21b. Main arm 2
1 is mounted on a frame 91 and tilted by an electric motor M1 with a speed reducer, and its original position (state in FIG. 4) is detected by an optical detection switch SW2. ing. The detection switch SW2 detects the rotational position of the rotary shaft of the bag carry-in motor M1 and is turned on when the main arm 21 returns to its original position, and is turned off otherwise. A gate-shaped sub arm 22 is tiltably attached to the inside of the main arm 21. The sub arm 22 includes a pair of leaf springs 23 a and 23 b fixed to the back surface of the main arm 21 and projections 22 a and 22 b that project left and right from the back surface of the sub arm 22.
When the main arm 21 tilts counterclockwise in FIG. 4, it is elastically pushed in the same direction by the leaf springs 23a and 23b.
When tilted clockwise, the projections 22a and 22b are integrally pushed in the same direction. Further, a detection switch SW3 for confirming the bag gripping operation is attached to the rear surface of the main arm 21, and the switch SW3 is turned on when the main arm 21 tilts with respect to the sub arm 22 by a predetermined angle or more. Is off when.

A plate 24 formed by bending the front end portion downward is fixed to the upper side of the sub arm 22, and
A pair of right and left swing levers 25, 25 are swingably attached to the plate 24. At both ends of the downwardly bent portion of the plate 24, fixing claws 24a, 24a are formed by cutting out the central part thereof, and at the same time, the claw 24
Movable claws 25a, 25a having a large number of vertical grooves are formed on the end surface of the swing lever 25 facing the a, 24a.
Pins 26, 26 projecting vertically are fixed to the outer circumferences of the swing levers 25, 25, respectively.
One end of the springs 27, 27 is fixed to the lower end of the plate 6, and the other end of the springs 27, 27 is connected to the plate 2
It is fixed to the center of 4. Therefore, in the springs 27, 27, the movable claws 25a, 25a are fixed claws 24a,
24b, the swing levers 25, 25 are biased forward, and the movable claws 25a, 25a are fixed.
a, 24a, the swing levers 25, 25
Bias backwards. A release lever 28 is attached to the inner surface of the sub arm 22 so as to be tiltable between the front surface of the plate 24 and the pins 26, 26. In addition, the chuck mechanism 2 for gripping the upper two places of the bag F by the swing lever 25, the pin 26, the spring 27, and the release lever 28.
It constitutes 0a.

As shown in FIGS. 2 to 4, 8 and 9, the bag supporting mechanism 30 is bent in an L shape and has a frame 91 at one end.
A pair of left and right bag support shafts 3 rotatably assembled to
1, 32 are provided. The bag support shafts 31 and 32 are urged in the clockwise direction in FIGS. 4 and 8 by the springs 33 and 34 at the one end, and the other ends are notched in the holding pins 13 and 14 of the bag storing mechanism 10 in the original position. The parts 13a and 14a are engaged from below. These bag support shafts 3
Stoppers 31a, 32a are integrally provided on the parallel extending portions of 1, 32 for attaching the bag F when the bag F is pulled rightward in FIGS.
The displacement of Fa is regulated. Further, the bag support shafts 31, 32 are assembled with light shield plates 35, 36 of a predetermined width that rotate integrally with the bag shafts 31, 32, and optical detection switches SW4, SW5 sandwiching the light shield plates 35, 36 are provided. It is fixed to the frame 91. These detection switches SW4 and SW5 detect the carrying in of the bag F, and the bag support shafts 31 and 32 are in the original position (see FIGS.
9), the shafts 31 and 32 are turned on slightly when the shafts 31 and 32 are rotated counterclockwise in FIGS. 4 and 8 and the light beams are blocked by the shading plates 35 and 36. When 31 and 32 rotate further in the same direction, they turn on again.

As shown in FIG. 3, the right-side ice accommodating / injecting mechanism 40A is mounted on a frame 91 and contains a tank 41a for accommodating ice dropped and supplied from the right ice-making machine A1.
Is equipped with. A transport chute 42a for dropping ice is integrally attached to the center of the automatic bagging apparatus B in the tank 41a, and ice is fed from the lower part of the tank 41a along the transport chute 42a into the chute 42a. The conveying auger 43a is rotatably assembled. The auger 43a is rotatably driven by an electric motor M2 with a speed reducer attached to the frame 91. An end of a drainage pipe 44a is connected to the bottom of the tank 41a, and the water distribution pipe 44a discharges the molten water accumulated in the tank 41a to the outside. A water sprinkling pipe 45a for melting the ice in the tank 41a is provided above the tank 41a, and the water sprinkling pipe 45a can be supplied with water from the outside through a water supply valve 46a driven by an electromagnetic solenoid. ing. Further, an optical detection switch SW6L and a detection switch SW6H are respectively attached to the lower part and the upper part of the tank 41a. The detection switch SW6L is normally in the off state, and is turned on when the ice in the tank 41 reaches the full amount of the bag F or more. The detection switch SW6H is normally off,
It turns on when the ice is almost full in the tank 41a. The left ice storage and input mechanism 40B is configured symmetrically to the right ice storage and input mechanism 40A, and has the same tank 41b as described above.
The transfer chute 42b, the auger 43b, the drainage pipe 44b, the water sprinkling pipe 45b, and the water supply valve 46b (not shown) are provided. The left ice storage and input mechanism 40B also includes the same electric motor M3 and detection switches SW7L and SW7H as described above.

As shown in FIGS. 3 and 4, the seal mechanism 50 includes a heater block 51 and a seal bar 52. The heater block 51 is fixed to the frame 91 and is heated by energizing the built-in heater 51a. The seal bar 52 is rotatably assembled to the frame 91 via a gate-shaped support arm 53 and support shafts 54, 54. Both ends of the support arm 53 are connected to a drive shaft 58 rotatably assembled to the frame 91 via a pair of links 55, 55, drive arms 56, 56 and tension coil springs 57, 57. The rotation of the shaft 58 causes the arm 53 to be rotationally driven together with the seal bar 52. The drive shaft 58 is rotationally driven by an electric motor M4 with a speed reducer, which is attached to the frame 91. An optical detection switch SW8 is attached to the frame 91 near the right drive arm 56. The switch SW8 is turned on when the seal bar 52 is in the upper position due to the rotation position of the arm 56, and other than that. Is off when. A detection switch is provided on the frame 91 near the right drive shaft 58.
SW9 and SW17 are assembled, and both switches SW9 and SW17 are turned on when the seal bar 52 is in the lower position and the intermediate position depending on the rotational position of the shaft 58, and are turned off otherwise.

As shown in FIGS. 3 to 6, the bag dropping mechanism 60 is provided with a rectangular base 61, and the base 61 is vertically movable by four pairs of links 62, 63, 64 and 65 at four corners. It is supported. Both front and rear link pairs 62,
64 is fixed at its base end to a drive shaft 66 that is rotatably assembled to the frame 91. The shaft 66 is an electric motor M5 with a reducer that is assembled to the frame 91.
It is designed to be driven to rotate by. The front and rear link pairs 63, 65 on the left side are fixed at their base ends to a drive shaft 67 that is rotatably attached to the frame 91. The shaft 67 is an electric motor with a reducer attached to the frame 91. It is designed to be rotationally driven by a motor M6. In addition, the frame 9 near the right drive shaft 66
Optical detection switches SW10, SW11, SW12, which respond to the rotational position of the shaft 66, are attached to the switch 1. The detection switch SW10 is on when the right end of the base 61 is in the upper position, and is off otherwise. Detection switch SW
11 is on when the right end of the base 61 is at the center position, and is off otherwise. The detection switch SW12 is on when the right end of the base 61 is in the lower position, and is off otherwise. Further, on the frame 91 near the left drive shaft 67, the detection switches SW10, SW11, SW12 are provided.
The same type of detection switches SW13, SW14, and SW15 are assembled.

As shown in FIG. 4, the weighing mechanism 70 has a weighing plate 72 which is tiltably supported by the base 61 of the bag dropping mechanism 60 at the right end in the figure and elastically supported by a spring 71 at the left end. . A substantially U-shaped holding plate 73 for holding the bag F containing ice is fixed on the weighing plate 72, and an optical device for measuring the weight on the weighing plate 72 is provided below the weighing plate 72. Expression detection switch SW16 is provided. The detection switch SW16 is normally in an off state, and is turned on when the weight on the weighing plate 72 reaches or exceeds a predetermined value.

Further, the automatic ice bagging apparatus B includes the electric motors M1 to M6, the electromagnetic solenoid SOLE and the heater 5 described above.
An electric control device 80 for controlling 1a is provided.
As shown in FIG. 14, the electric control device 80 includes a microcomputer 81 connected to the detection switches SW1 to SW17.
(Hereinafter, simply referred to as a microcomputer 81), a drive circuit 82 connected to the microcomputer 81, a warning device 83, a power switch 84, an unlock switch 85 and a lamp 86 are provided. The microcomputer 81 and the drive circuit 82 are built in the electric control unit body 80A shown in FIGS. 1 and 2, and the microcomputer 81 executes a program corresponding to the flowcharts shown in FIGS. 15 to 17 by turning on the power switch 84. The drive circuit 82 is controlled by the microcomputer 81 to drive the electric motors M1 to M6, the electromagnetic solenoid SOLE and the heater 51a. The warning device 83, the power switch 84, the lock release switch 85, and the lamp 86 are opened to the outside through the window B1 formed in the front cover of the automatic bagging apparatus B, and the operation panel 80 is opened.
It is provided in B. The warning device 83 includes a display device, a buzzer, and the like, and notifies the abnormality when the operation of the automatic bagging device is abnormal. The power switch 84 starts the operation of the automatic bagging device B. Unlock switch 85
Is an operation switch for controlling the lock mechanism 16 of the bag storage mechanism 10 to the unlocked state, and the lamp 86 is normally in the off state and blinks or lights up by the operation of the unlock switch 85.

Next, the operation of the embodiment configured as described above will be described. When the power switch 84 is turned on, the microcomputer 81 starts executing the "main program" in step 100 of FIG. 15, and determines in step 102 whether the detection switch SW1 is on. In this case, if the cassette 11 is not set and the detection switch SW1 is off, the microcomputer 81 makes a “NO” determination at step 102 to stop the progress of the program. Also,
If the cassette 11 is set and the detection switch SW1 is turned on, the microcomputer 81 returns "Y" in step 102.
It is determined to be “ES”, and the program proceeds to step 104 and subsequent steps.

At step 104, the microcomputer 81 executes a seal bar raising processing routine for setting the seal bar 52 to the upper position. In this case, since the seal bar 52 is set to the intermediate position in the standard state (the detection switch SW17 is on), the microcomputer 81 reverses the electric motor M4 until the detection switch SW8 is turned on. As a result, the support arm 53 causes the drive arms 56, 56 and the link 5 to
The seal bar 52 is moved to the upper position and stopped by being rotated upward by the action of 5, 55 and the support shafts 54, 54.

Next, in step 106, the microcomputer 81 executes a bag carry-in process for carrying in one of the large number of bags F stored in the bag storage mechanism 10 above the base 61. In this process, first, the electric motor M1 is normally rotated. The forward rotation of the electric motor M1 causes the main arm 21 to start rotating counterclockwise in the drawing from the original position (the state shown in FIG. 4). In this case, the sub arm 22 and the release lever 28 also rotate together with the main arm 21 in the positional relationship shown in the center of FIG. 13, and the front surface of the plate 24 fixed to the sub arm 22 contacts the bag F housed in the cassette 11. The rotation of the main arm 21 stops at the point of contact. After that, the electric motor M1 continues to rotate forward, so the main arm 2
1 continues to rotate further by the action of the leaf springs 23a and 23b to press the pins 26 and 26 forward against the springs 27 and 27. As a result, the swing levers 25, 25 rotate, and as shown on the left side of FIG. 13, the rear side surface of the one bag F on the most front side among the many bags F housed in the cassette 11. The movable claws 25a, 25a and the plate 24
It is sandwiched between the fixed claws 24a and 24a formed in the above. That is, the chuck mechanism 20a grips the upper two places on the rear side surface of the bag F. On the other hand, in this state, the main arm 21 is located in front of the sub arm 22, and the detection switch SW3 is turned on. In response to the turning on of the detection switch SW3, the microcomputer 81 stops the normal rotation of the electric motor M1. At this time, the springs 27, 27 urge the swing levers 25, 25 toward the fixed claws 24a, 24a, so that the rear side surface of the bag F is held between the fixed claws 24a, 24a and the movable claws 25a, 25a. It

Then, two seconds after the stop control of the electric motor M1, the microcomputer 81 reverses the electric motor M1.
Due to the reverse rotation of the electric motor M1, the main arm 21 rotates clockwise in FIG. 4 to return to the original position, and at the same time,
The sub arm 22 also rotates in the same direction as the main arm 21 and returns to the original position. The return of the main arm 21 to the original position turns on the detection switch SW2, and in response to this ON operation, the microcomputer 81 stops the reverse rotation of the electric motor M1. At this time, since the chuck mechanism 20a still holds the rear side surface of the bag F, the bag F is held by the bag support shaft 3
1, 32, and as shown on the right side of FIG. 13, the mounting piece Fa on the front side surface of the bag F has stoppers 31a, 3
The upper opening is widened by abutting on 2a.

Next, the microcomputer 81 determines in step 108 whether or not the detection switches SW4 and SW5 are both off. In this case, if the bag F has been normally carried in by the bag carrying-in process, the chuck mechanism 20a will move to the upper part 2 of the bag F.
I'm grasping the point. Therefore, in this case, with the attachment piece Fa of the bag F in contact with the stoppers 31a and 32a,
By the rotation of the sub arm 22, the bag support shaft 31,
Since 32 is rotated counterclockwise in FIG. 8 against the springs 33 and 34, the light shielding plates 35 and 36 are also rotated to turn off the detection switches SW4 and SW5 which were initially in the ON state.
On the other hand, if the bag F is not normally carried in by the carrying-in process, the chuck mechanism 20a has failed to grasp one or both of the upper two places of the bag F, so that the bag support shaft 31 on the side of grasping failure. 32 is not rotated counterclockwise, and one or both of the detection switches SW4 and SW5 on the corresponding side are kept on.

First, the case where the bag carry-in operation is normal will be described. Since the detection switches SW4 and SW5 are both turned off as described above, the microcomputer 81 determines in step 108.
In step 110, the program is judged as "YES".
Proceed to the ice throw weighing process. In this ice throwing measurement process, first, the microcomputer 81 sets the base 61 at the central height position by controlling the rotation of the electric motors M5 and M6 based on the signals from the detection switches SW11 and SW14 ((in FIG. 19). See A)). Next, the microcomputer 81 normally rotates the electric motor M2 or the electric motor M3. As a result, the right auger 43a or the left auger 43b starts to rotate, and the ice in the right tank 41a or the left tank 41b is sequentially conveyed upward through the right conveyance chute 42a or the left conveyance chute 42b, and the bag support shaft 31, It starts to be put into the bag F supported by 32. In this case, the detection switch SW6
If both L and SW7L are on and there is more than one bag of ice in both tanks 41a and 41b, the ice will be removed from both tanks 41a and 41b.
Electric motor M2 in order to load 1 bag from 1b alternately
Alternatively, the electric motor M3 is alternately rotated in the forward direction for each circulation process including steps 104 to 120. On the other hand, the detection switch SW
If only one of 6L and SW7L is on and there is more than one bag of ice in one of the tanks 41a and 41b, the electric motor M2 or electric motor on the side where the switch SW6L or SW7L is on Only M3 is rotated forward. At the same time when the ice is thrown, the base 61 is raised to the upper position by the forward rotation of the electric motors M5 and M6, and the load of the ice thrown into the bag F is not applied to the bag support shafts 31 and 32.
The entire load should be supported only by the base 61 (measuring plate 72). After raising the base 61 to the upper position (see FIG. 19 (B)), the detection switch SW16 is turned on when the ice in the bag F reaches a predetermined amount by the introduction of the ice. In response to the ON operation of the detection switch SW16, the microcomputer 81
Stops the forward rotation of the electric motor M2 or the electric motor M3 to stop the injection of ice from the right tank 41a or the left tank 41b into the bag F.

Next, the microcomputer 81 executes steps 112-1.
At 16, a sealing process for sealing the upper portion of the bag F containing ice, which is supported by the bag support mechanism 30, is executed. In step 112, first, the electric motor M4 is normally rotated. The forward rotation of the electric motor M4 causes the seal bar 52 to rotate counterclockwise in FIG. 4 around the support shaft 54 (see (A) to (C) in FIG. 18), and the bar 52 supports the bag. The upper portion of the front side surface of the bag F locked by the shafts 31 and 32 is moved toward the heater block 51 as the shafts 31 and 32 rotate counterclockwise. At this time, since the chuck mechanism 20a is in a state of grasping the upper portion of the rear side surface of the bag F, the seal bar 52 sandwiches the upper portion with the heater block 51 in a state where the front side surface and the rear side surface of the bag F are aligned. On the other hand, almost simultaneously with this pinching, the seal bar 52
4 presses the release lever 28 of the bag carry-in mechanism 20 clockwise in FIG. 4, so that the upper side of the lever 28 presses the pins 26, 26 to the right in FIG. As a result, the swing lever 2
5, 5 and 25 rotate to release the holding of the bag F by the movable claws 25a, 25a, that is, the holding of the bag F by the chuck mechanism 20a is released. In this released state, the main arms 21, the sub arms 22, the swing levers 25, 25, etc. are kept in the central state of FIG. 13 by the action of the springs 27, 27. Further, in this state, the detection switch SW9 for detecting that the seal bar 52 is at the lower position is turned on, and the microcomputer 81 stops the forward rotation of the electric motor M4 in response to the switch SW9 being turned on.

At step 114, the microcomputer 81
Energizes the heater 51a in the heater block 51 for 0.6 seconds. As a result, the upper portion of the bag F sandwiched between the heater block 51 and the seal bar 52 is melted, the front side surface and the rear side surface are adhered, and the bag F is sealed. Next step 11
In 6, the electric motor M4 is reversed. By the reverse rotation of the electric motor M4, the seal bar 52 and the support arm 53
Contrary to the above, the above are moved upward to the intermediate position (see FIG. 18).
(State of (B)). In this case, the drive arm 56
The detection switch SW17 turns on with the return to the intermediate position of
The microcomputer 81 stops the reverse rotation of the electric motor M4 in response to the ON operation of the switch SW17. Then, in this state, the bag F is filled with a predetermined amount of ice, and the base 61 is
It rests on the weighing plate 72 provided above.

Next, the microcomputer 81 executes a bag drop process for dropping the bag F containing ice into the stocker C in step 118. In this process, first, the electric motors M5 and M6 are driven in reverse, and the base 61 is lowered by the action of the links 62 to 65. In this case, the base 61 is initially in the upper position as shown in FIG.
Descends to the lower position shown in FIG. In this state, the detection switches SW12, SW15 are turned on, and the microcomputer 81 responds to the ON operation of each switch SW12, SW15 by the electric motor.
Stop the reverse rotation of M5 and M6 respectively. Next, the microcomputer 8
1 rotates the electric motor M6 (or the electric motor M5) in the normal direction. As a result, the left end (or right end) of the base 61 rises, and the bag F containing the ice slides down from the base 61 and falls into the stocker C as shown in FIG. The ascent of the left end (or right end) of the base 61 is continued until the left end (or right end) reaches the upper position. Base 6
When the left end (or right end) of 1 reaches the upper position as shown in (E) of FIG. 19, the detection switch SW13 (or detection switch SW10) is turned on, and the microcomputer 81 responds to the ON operation of the switch SW13. The normal rotation of the electric motor M6 (or the electric motor M5) is stopped. After that, the microcomputer 81
Controls the rotations of the electric motors M5 and M6 based on the signals from the detection switches SW11 and SW14 to move both ends of the base 61 to the center position.

After the processing of step 118, the microcomputer 8
In step 120, it is determined whether or not the flag BSWF for indicating that the lock mechanism 16 is controlled to the unlocked state, that is, the bag F can be replenished is "1". . This flag BSW is in the initial state "
The lock release switch 8
When 5 is operated, it is set to "1" by the "interrupt program" described later. First, the flag BSWF is "
The case of 0 "will be explained.
Determines "NO" in step 120, returns the program to step 104, and repeatedly executes the circulation process including steps 104 to 120. Thus, the microcomputer 81 causes the bag loading mechanism 2 including steps 104 to 120 to be carried out.
0, the bag F is carried in, ice is put into the bag F by the weighing mechanism 70 until a predetermined amount of ice is detected, and ice is put into the bag F by the ice accommodating mechanism 40A, 40B.
Operation of the bag F by the bag and the bag F by the drop mechanism 60
By repeatedly controlling the sequence operation including the dropping operation of (1), a predetermined amount of ice is sequentially packed in the bag, and the packed ice is sequentially stored in the stocker C one bag at a time.

During execution of such a "main program", the microcomputer 81 interrupts and executes the "interrupt program" of FIG. 17 at predetermined time intervals. Microcomputer 81
Starts execution of this program at step 300,
In step 302, it is determined whether the lock release switch 85 has been turned on. In this case, if the user does not turn on the lock release switch 85, the microcomputer 81 determines “NO” in step 302 and advances the program to step 310. The microcomputer 81 counts up the timer value BTM that defines the time for refilling the bag F by "1" at step 310, and also at step 31.
At 2, the other timer values are incremented by "1", and at step 314, the execution of this "interrupt program" is completed.

On the other hand, when the user turns on the lock release switch 85, the microcomputer 81 makes a "YES" determination at step 302 and the flag BSWF at step 304.
Is set to "1", the lamp 86 is blinked in step 306, the timer value BTM is initialized to "0" in step 308, and the program proceeds to step 310. As a result, thereafter, each time the "interrupt program" is executed, the timer value BTM is incremented by "1" from "0". Thus, in response to the ON operation of the unlock switch 85, the flag BSW
Is set to “1”, the microcomputer 81 determines “YES” in step 120 after the series of processing in steps 104 to 118 of the “main program” and sets the program to the “bag setting routine” in step 122. ".

This "bag setting routine" is shown in detail in FIG. The microcomputer 81 starts the execution of the same routine at step 200, and the lamp 8 is started at step 202.
6 is turned on, the flag COPF indicating that the cassette 11 is removed by "1" is set to "0", and the step 20 is executed.
The processing of 4-218 is executed. In this case, the cassette 11
If the set state of No. is not released, the detection switch SW1 is kept in the off state, so that in step 212, "N
It is determined to be "O" and the flag COPF is also kept at "0". As a result, the microcomputer 81 determines “NO” in step 216 and continues to repeatedly execute the circulation process including steps 204 to 216. During this circulation process, when the user turns on the lock release switch 85, the microcomputer 81 determines “YES” in step 206, and energizes the electromagnetic solenoid SOLE in step 206. The lock release switch 85 in this case is used as one of the operations for removing the cassette 11 from the set state. By energizing the electromagnetic solenoid SOLE, the lock pin 16a is displaced upward. When the user pulls the cassette 11 forward while pressing the lock release switch 85, the cassette 11 is tilted forward so that the bag F can be replenished in the cassette 11. When the user releases the ON operation of the lock release switch 85, the microcomputer 81
During the circulation process, it is determined to be "NO" in Step 206, and the energization of the electromagnetic solenoid SOLE is released in Step 210. On the other hand, when the cassette 11 is tilted forward, the detection switch SW1 is turned off.
Determines "YES" in step 212, and changes the flag COPF to "1" in step 214. As a result, the microcomputer 81 determines “YES” in step 216, and executes the circulation process including steps 204 to 218.

After the bag F is replenished, when the user pushes the cassette 11 to stand up, the lock pin 16a is lifted by the projecting piece 11a of the cassette 11 and enters the hole 11a1 to set the cassette 11. Since the detection switch SW1 is turned on when the cassette 11 is set, the microcomputer 81 causes "Y" in step 218 during the circulation process.
ES ”and the program proceeds to step 220. In step 220, the flag BSWF is returned to "0", the electromagnetic solenoid SOLE is de-energized, the lock mechanism 16 is controlled again to the locked state, and the lamp 86
Is turned off. After the processing of step 220, the microcomputer 81 ends the execution of the "bag setting routine" at step 222 and returns the program to step 104 of FIG. As a result, the microcomputer 81 starts the steps 104-
The cyclic process consisting of 120 is started again. At this time, since the seal bar 52 is in the intermediate position and presses the bag supporting shafts 31, 32 of the bag supporting mechanism 30 downward, the shafts 31, 32 are held by the holding pins 13, 14 of the bag storing mechanism 10. It is located below. Therefore, by moving the seal bar 52 upward in the seal bar raising process of step 104, the bag support shafts 31, 3 are
2 is pulled by the springs 33 and 34 and rotated clockwise in FIG. 4 to rotate the holding pins 13 and 14 into the notches 13a and 14
engage a.

In this way, when the user turns on the lock release switch 85 to refill the bag, the microcomputer 81 controls the cassette 11 to the unset state for the first time after the dropping operation of the bag F and each mechanism. Stop the control of the sequence operation of. Thus, after the dropping operation of the bag F, the operation sequence of one cycle of the automatic bagging apparatus is completed and the operation of each mechanism is stopped, so that the operation of each mechanism is safe and does not interfere. The bag F can be attached to the cassette 11. Further, when the cassette 11 is returned to the set state after the bag F is mounted, the microcomputer 81 restarts the sequence control and controls the lock mechanism 16 to the locked state again, so that the automatic bag is not operated by the user. The operation of the filling device is automatically started.

On the other hand, if the user does not remove the cassette 11 from the set state for a long time after the user turns on the lock release switch 85, step 20 in FIG.
During the cyclic processing consisting of 4 to 218, the timer value BTM becomes 10 by executing the "timer interrupt program" of FIG.
It is equal to or greater than the value corresponding to minutes. Therefore, during the circulation process, the microcomputer 81 determines “YES” in step 204, advances the program to step 220 and subsequent steps, and ends the execution of the “bag setting routine” in step 220.
As a result, in this case, even if the user forgets to refill the bag F after turning on the lock release switch 85,
The sequence operation of each mechanism including steps 104 to 118 is automatically performed again.

On the other hand, when the carrying-in operation of the bag F by the bag carrying-in mechanism 20 is not normally performed, one of the detection switches SW4 and SW5 continues to be kept in the ON state as described above. Therefore, in this case, the microcomputer 81 determines “NO” in step 108 of FIG. 15 and advances the program to step 124. In step 124, it is determined whether both the detection switches SW4 and SW5 are turned on. When the chuck mechanism 20a does not correctly grip the bag F even though the bag F remains in the bag storage mechanism 10, the chuck mechanism 20a normally grips the bag F at only one position and the other position. In most cases, it fails to grab. Therefore, when the chuck mechanism 20a is grasping only one place of the bag F and only one of the detection switches SW4 and SW5 is off, the microcomputer 81 determines in step 124.
Is determined to be "NO" and the program proceeds to step 126. In step 126, data indicating bag carry-in abnormality (bag grip failure) is output to the warning device 83, and the warning device 83 notifies the user of bag carry-in abnormality. After that, the microcomputer 81 stops the execution of the program at step 130,
That is, the control of the sequence operation of each mechanism is stopped. On the other hand, if the bag F does not remain in the bag storage mechanism 10, the chuck mechanism 20a will not grip the bag at both places. In this case, since both detection switches SW4 and SW5 are both kept in the ON state, the microcomputer 81 proceeds to “Y
ES ”is determined, and the data indicating that there is no bag is output to the warning device 83 in step 128. As a result, the warning device 83 notifies the user that the bag F has disappeared from the bag storage mechanism 10. After that, the microcomputer 81 stops the control of the sequence operation of each mechanism in step 130, as described above.

(First Modification) Next, a first modification of the above embodiment will be described. In this modification, instead of performing the initialization process of the timer value BTM in step 308 of FIG. Step 308a of 15 (illustrated by a broken line)
I am going to do it. According to this, the program is returned to step 104 10 minutes after the lock mechanism 16 is controlled to the unlocked state and the bag F can be replenished after the unlock switch 85 is turned on. Then, the sequence operation of each mechanism is automatically controlled by the processing of steps 104 to 118.
As a result, according to this modification, the lock release switch 8
Even if it takes a long time from when the lock mechanism 16 is controlled to the unlocked state after the ON operation of 5, the bag F can be replenished until 10 minutes have elapsed from the start of the control in the unlocked state.

(Second Modification) In the second modification, the lock mechanism 16 of the bag storing mechanism 10 is improved, and the processing of the "bag setting routine" of FIG. 16 is changed as shown in FIG. 21. It is a thing. As shown in FIG. 20, the lock mechanism 16 includes a hook mechanism 16A that engages with a recess 11a2 provided in the protruding piece 11a of the cassette 11 and the protruding piece 11a.
And a latch mechanism 16B that engages with the hole 11a3 provided in the. The hook mechanism 16A is a cylinder 16A1 fixed to the frame 91, a rod 16A2 slidably provided in the cylinder 16A1 and fitted in the recess 11a2 at the tip, and a rod 16A2 provided in the cylinder 16A1 at the bottom. It consists of a spring 16A3 that biases the hook mechanism 16A.
Fixes the cassette 11 elastically to the frame 91. The latch mechanism 16B is a cylinder 16B1 fixed to the frame 91, a rod 16B2 slidably provided in the cylinder 16B1 and penetrating into the hole 11a3 at the tip, and a cylinder 16B1 provided in the cylinder 16B1 in a non-energized state. Rod 1
6B2 is displaced downward and rod 1 is energized.
An electromagnetic solenoid SOLE for pulling 6B2 out of the hole 11a3 is provided.

Also in the modified example configured as above, steps 104 to 120 of the "main program" of FIG.
Since the electromagnetic solenoid SOLE is kept in the non-energized state and the rod 16B2 has entered the hole 11a3 during the circulation process consisting of (3), the cassette 11 cannot be tilted forward. When the lock release switch 85 is pressed during the sequence operation control of each mechanism by the circulation processing, the flag BSWF is set to "1" in the "interrupt program" of FIG. 17, as in the case of the above embodiment. , Microcomputer 81
After executing the bag drop processing in step 118 of the "main program", executes the "bag setting routine" in FIG.
In this routine, the microcomputer 81 executes step 23.
The execution is started at 0, and the lamp 8 is started at step 232.
6 is turned on, the solenoid SOLE is energized, and the flag
Set COPF to "0". By energizing this electromagnetic solenoid SOLE, the rod 16B2 is pulled out from the hole 11a3,
Since the lock mechanism 16 is controlled to the unlocked state, the cassette 11 is only elastically held by the hook mechanism 16A. So in this state,
The user can tilt the cassette 11 forward only by pulling the cassette 11 forward. On the other hand, also in this second modification, as in the case of the above-described embodiment, step 23
The microcomputer 81 performs steps 234 to 24 until the cassette 11 is removed from the set state by the processing of 6,240.
The cyclic process consisting of 0 is continuously executed. If the cassette 11 is tilted forward, the detection switch SW1 is turned off, and the microcomputer 81 sets the flag COPF to "1" by the processing of steps 236 and 238.
The cyclic processing consisting of 4 to 242 is executed.

When the cassette 11 is erected (set) after the bag F is replenished in the cassette 11, the detection switch SW1 is turned on as in the case of the above embodiment. Therefore, also in this case, the microcomputer 81 determines “YES” in step 242, executes the same processing as step 220 of the above-described embodiment in step 244, and executes the “bag setting routine” in step 246. To finish. In this case as well, the rod 16B2 has the hole 11 by deenergizing the electromagnetic solenoid SOLE in step 244.
It becomes impossible to invade the cassette 11 by entering the inside of a3. If the cassette 11 is not tilted forward for a long time after the lock release switch 85 is turned on, step 234
The control of the sequence operation of each mechanism is automatically restarted by the processing of. Also in this case, as in the first modification, instead of performing the initialization process of the timer value BTM in step 308 of FIG. 17, step 308a of FIG.
If it is carried out, the sequence operation control of each mechanism will be automatically restarted 10 minutes after the lock mechanism 16 is controlled to the unlocked state and the bag F can be replenished. .

(Other Modifications) In the above embodiments and modifications, the case of bagging ice has been described, but this automatic bagging device is not limited to ice, and confectionery, candy, and other items can be packed. It can be packed in bags. In this case, items may be put in the tanks 41a and 41b instead of ice. Further, in the above-mentioned embodiments and modified examples, specific numerical values have been illustrated regarding the operating time of each mechanism, but these times are variously changed according to the capacity and performance of each component adopted in each mechanism. It is a thing.

[Brief description of drawings]

FIG. 1 is a schematic front view of an ice bag making machine showing an embodiment of the present invention.

2 is a partially cutaway front view of the automatic ice bagging device of FIG. 1. FIG.

3 is a partially enlarged view of FIG.

FIG. 4 is a partially cutaway side view of the automatic ice bagging device.

FIG. 5 is a front view of the same portion.

FIG. 6 is a rear view of the same portion.

7 is an enlarged partial view of the lock mechanism of FIG.

FIG. 8 is a side sectional view of a bag storing mechanism and a bag supporting mechanism.

FIG. 9 is a plan view of a bag storing mechanism and a bag supporting mechanism.

10A is a front view of the bag, and FIG. 10B is a side view of the bag.

FIG. 11 is a perspective view of the bag loading mechanism as viewed from the front side.

FIG. 12 is a perspective view of the bag loading mechanism as viewed from the back side.

FIG. 13 is a plan view showing an operating state of the bag loading mechanism.

FIG. 14 is a block diagram of an electric control device.

15 is a flowchart of a "main program" executed by the microcomputer shown in FIG.

FIG. 16 is a flowchart showing details of a “bag setting routine” in FIG. 15.

FIG. 17 is a flowchart of an “interrupt program” executed by the microcomputer of FIG.

FIG. 18 is an operation explanatory view of the seal mechanism.

FIG. 19 is an operation explanatory view of the bag dropping mechanism.

FIG. 20 is a partial cutaway view showing a modification of the lock mechanism.

FIG. 21 is a flowchart showing a modified example of the “bag setting routine”.

[Explanation of symbols]

A1, A2 ... ice making machine, B ... automatic bag filling device, C ... stocker, F ... bag, 10 ... bag storing mechanism, 11 ... cassette, 16
... lock mechanism, 20 ... bag loading mechanism, 20a ... chuck mechanism, 21 ... main arm, 30 ... bag support mechanism, 31,3
2 ... Bag support shaft, 40A, 40B ... Ice accommodating and charging mechanism, 41a, 41b ... Tank, 43a, 43b ... Auger, 50 ... Sealing mechanism, 51 ... Heater block, 52 ...
Seal bar, 60 ... Bag dropping mechanism, 61 ... Base, 62 ...
64 ... Link pair, 70 ... Measuring mechanism, 71 ... Spring,
72 ... weighing plate, 81 ... microcomputer (microcomputer), 85 ... lock release switch, M1-M6 ... electric motor, SW1-SW17 ... detection switch, SOLE ... electromagnetic solenoid.

Claims (4)

[Claims] 1. A bag storage mechanism having a detachable cassette that accommodates a large number of bags in a set state and allows the bags to be attached when the set state is removed, and in a set state of the cassettes. A bag loading mechanism for loading bags one by one from the cassette to a predetermined position, a bag support mechanism for expanding and supporting an upper opening of the loaded bag, and an item sequentially accommodated in a tank and supported by the bag. Loading mechanism for loading the bag, a weighing mechanism for measuring the amount of the product loaded in the bag, a sealing mechanism for sealing the upper part of the bag loaded with the product, and a stocker for loading the sealed bag. A drop mechanism for dropping the bag into the bag, a bag loading operation by the bag loading mechanism, an item loading operation by the loading mechanism that loads the item into the bag until a predetermined amount of the item is detected by the weighing mechanism, and a sealing mechanism. Yo An electric control device having a sequence control means for repeatedly controlling a sequence operation including a bag sealing operation and a bag dropping operation by the dropping mechanism, sequentially packing the predetermined amount of products and packing the products. In an automatic bag filling device for sequentially accumulating bags in the stocker, the bag storing mechanism is provided with a lock mechanism for locking the cassette in a set state, and the electric control device,
The operation switch and the sequence operation by the sequence control means are normally permitted in the first state, the lock mechanism is controlled to the lock state, and when the operation switch is operated, the operation switch is switched to the second state to perform the sequence operation. And a stop control means for controlling the lock mechanism to an unlocked state while stopping the sequence operation by the sequence control means at a predetermined timing. 2. The automatic bagging apparatus according to claim 1, wherein the bag storing mechanism is provided with a detecting means for detecting that the cassette is in a set state, and the electric control device further includes the detecting means. An automatic bagging device, characterized by further comprising return control means for returning the stop control means to the first state in response to detection by the means. 3. The automatic bagging device according to claim 1, wherein the electric control device further includes a return control for returning the stop control means to a first state after a lapse of a predetermined time from the operation of the operation switch. An automatic bagging device comprising means. 4. The automatic bagging device according to claim 1, wherein the electric control device further includes a stop control after a predetermined time has elapsed since the stop control means started controlling the lock mechanism to an unlocked state. An automatic bagging device comprising return control means for returning the means to the first state.