JPH0699908A - Automatic bagging machine - Google Patents

Abstract

PURPOSE:To achieve a secure sealing action of an automatic bagging machine. CONSTITUTION:In an automatic bagging machine, bags F are carried in one by one, and after a specified amount of ice is poured into the bag F while it is held by a bag holder 30, the upper part of the bag F is heat-sealed by a sealing device 50. When the upper part of the bag F is inserted S between a heater block 51 and a sealing bar 52, a base 61 (a receptacle plate 72) is lowered a little from the upper position to keep the bag F stretched and prevent the upper part of the bag from being creased. When the upper part of the bag F is melted and sealed, the receptacle plate 72 is raised to the upper position to support the bag F, so that the bag F is prevented from being broken by its dead load. When an abnormal action occurs in the sealing device 50, the device is stopped.

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 an item such as ice and sealing the bag.

[0002]

2. Description of the Related Art Conventionally, as shown in, for example, US Pat. No. 5,109,651, a device of this type has a bag storing mechanism for storing a large number of bags which are melted by heat and a bag storing mechanism. A bag loading support mechanism for loading bags one by one from the mechanism onto the receiving plate and expanding the upper opening of the loaded bags to support the bag at the top, a tank for storing a large number of items, and the items stored A loading mechanism for sequentially feeding and feeding a predetermined amount into the supported bag, a heater block containing a heater, a seal bar for pressing the upper part of the bag to the heater block, and a seal bar by driving the seal bar. A sealing mechanism for sealing the upper part of the bag in which the item is placed, and an electric control device for controlling each mechanism, the electric control device comprising: Bag carry-in Carrying operation of the bag by lifting mechanism, by repeatedly controlling the sequence operation consisting of sealing operation of bags by goods closing operation and sealing mechanism by shooting mechanism,
The predetermined amount of ice is sequentially packed in a bag and the bag is sealed.

[0003]

However, in the above-mentioned conventional apparatus, since the receiving plate is always kept at a constant height, the position at which the bag is supported by the bag carry-in support mechanism is relative to the receiving plate. When it is lowered, the bag containing the product is supported by the backing plate and wrinkles can be formed on the upper part of the bag.When the upper part of the bag is sandwiched between the heater block and the seal bar, the wrinkle part is sandwiched. The sealing operation of is not performed properly. When the position where the bag is supported is lowered with respect to the receiving plate, the bag is no longer supported by the receiving plate and is supported by the bag carrying-in support mechanism, so that the upper part of the bag is sealed by energizing the heater. At that time, the bag sometimes broke due to the weight of the item in the bag. In addition, in this automatic bagging device, even if an abnormality occurs in the sealing operation, the abnormality is not properly dealt with, and there is a problem that articles such as ice will be unnecessarily dropped outside the bag. there were.

The present invention has been made to solve the above problems, and its purpose is to accurately perform the sealing operation of the bag by the sealing mechanism, and to appropriately deal with the abnormality even if an abnormality occurs in the sealing operation. The object is to provide an automatic bagging device that can do this.

[0005]

In order to achieve the above object, the structural feature of the invention according to claim 1 is that a second movable mechanism for moving a receiving plate up and down is provided and an electric control device is provided. First control means for operating the first movable mechanism by controlling the second movable mechanism to lower the receiving plate to a height at which the bag is stretched, and sandwiching the upper portion of the bag between the heater block and the seal bar. After the control by the first control means, the second control means controls the second movable mechanism to energize the heater for a predetermined time in a state where the backing plate is raised to a height at which the bag is supported by the backing plate, and the second control means. After the control, the third control means for controlling the first movable mechanism to release the sandwiching of the bag by the heater block and the seal bar is provided.

[0006] The structural feature of the invention described in claim 2 is that in the invention according to claim 1, the second
The control means controls the first movable mechanism after raising the receiving plate and before energizing the heater to temporarily release the sandwiching of the bag and to re-separate the bag between the heater block and the seal bar. There is a re-pinching control means for pinching in.

Further, the structural feature of the invention described in claim 3 is that the electric control device causes an abnormality detecting means for detecting an operation abnormality of the seal mechanism, and stops the sequence operation when the abnormality is detected. The stop control means is provided.

[0008] Further, the constitutional feature of the invention described in claim 4 is that the electric control device controls the movable mechanism to sandwich the upper part of the bag between the heater block and the seal bar.
Control means, second control means for energizing the heater for a predetermined time after control by the first control means, and third control for controlling the movable mechanism after control by the second control means to release the sandwiching of the bag by the heater block and the seal bar. The control means is provided, and the abnormality detecting means of the invention according to claim 3 is configured by means for detecting that a predetermined time or more has passed after the first control means sandwiches the bag.

Further, the constitutional feature of the invention according to claim 5 is that the abnormality detecting means of the invention according to claim 3 is constituted by means for detecting a break in the heater.

Further, in the constitutional feature of the invention described in claim 6, the item is ice, a sprinkler for melting the ice is provided in the tank, and the stop control means is arranged in sequence in the electric control device. The melting control means is provided for activating the sprinkler when the operation is stopped.

[0011]

In the invention according to claim 1 configured as described above, when the upper part of the bag is sandwiched between the heater block and the seal bar, the first control means extends the bag. Since the state is maintained, the upper portion of the bag does not wrinkle, and the upper portion is properly sandwiched between the heater block and the seal bar. Further, when the upper part of the bag is sealed by melting, the second control means supports the bag on the receiving plate, so that the bag is not torn by its own weight. As a result, according to the invention of claim 1, the bag in which the articles are packed can always be accurately sealed.

Further, in the invention according to claim 2 configured as described above, the re-pinching control means controls the first movable mechanism after the raising of the receiving plate and before the energization of the heater, and once. The bag is sandwiched between the heater block and the seal bar again by slightly releasing the sandwiching, and the upper part of the bag is securely sandwiched before the heater is energized. As a result, according to the invention of claim 2, the upper part of the bag is sealed better than the invention of claim 1.

Further, in the invention according to claim 3 configured as described above, when an abnormality occurs in the operation of the seal mechanism, the abnormality detecting means detects the abnormality. In this case, the abnormality detection means detects that it takes more than a predetermined time to sandwich the upper part of the bag between the heater block and the seal bar, as in the invention according to claim 4, for example. Further, the abnormality detecting means detects the disconnection of the heater as in the invention according to claim 5, for example. Then, when the operation abnormality of the seal mechanism is detected in this way, the stop control means stops the sequence operation by the electric control device. As a result, according to the inventions according to claims 3 to 5, when the bag is not sealed, the loading operation of the next item is not performed by the loading mechanism, so that the same item is placed in the automatic bagging device. You can avoid being scattered.

Further, in the invention according to claim 6 configured as described above, when the stop control means stops the sequence operation by the electric control device, the melting control means operates the water sprinkler to activate the inside of the tank. Thaw the ice. As a result, according to the invention of claim 6, the ice in the tank is melted by the water sprinkling even when the ice throwing operation is stopped, so that the ice sticks (arches) in the tank. Disappears.

[0015]

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 device B is arranged on the front side of the central portion of the device B and contains 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, 7, and 8, the bag storing mechanism 10 is provided with a cassette 11 for storing a large number of bags F, which is formed in a rectangular parallelepiped shape with its back surface and 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 cassette 11 configured as described above is fixed substantially vertically by the fixing plate 16 rotatably assembled to the frame 91 when the automatic bagging apparatus B is operated, and the bag F can be taken out backward. The bag F can be assembled to the pins 13 to 15 by being tilted forward while the fixing plate 16 is rotated upward. 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 that is melted by heat. As shown in FIG. 9, the bottom part is woven inward so that it partially extends downward when ice is accommodated. ing. The pins 13 to 1 of the cassette 11 are provided on the front side surface of the upper opening of the bag F.
Mounting piece Fa having mounting holes Fa1, Fa2, Fa3 to 5 is formed.

The bag carry-in mechanism 20 is shown in FIGS.
As shown in FIG. 12, 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. 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 is tilted 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. The swing lever 25, the pin 26, the spring 27, and the release lever 28 constitute a chuck mechanism for gripping the bag F.

As shown in FIGS. 2 to 4, 7, and 8, the bag support mechanism 30 is bent into 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 7 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. Stoppers 31a and 32a are integrally provided on the parallel extending portions of the bag support shafts 31 and 32, and the bag F is moved by the bag loading mechanism 20 as shown in FIGS.
When it is pulled to the right of 8, the displacement of the mounting piece Fa is restricted. Also, the bag support shaft 3
Light-shielding plates 35 and 36 having a predetermined width that rotate integrally with the shafts 31 and 32 are attached to the shafts 1 and 32, and an optical detection switch SW sandwiching the light-shielding plates 35 and 36, respectively.
4, SW5 are fixed to the frame 91. These detection switches SW4, SW5 are in the ON state when the bag support shafts 31, 32 are in the original position (the state shown in FIGS. 4, 7, 8), and the shafts 31, 32 are counterclockwise in FIGS. When the light beams are shielded by the light shielding plates 35 and 36 by a slight rotation in the same direction, the light is turned off, and when the shafts 31 and 32 are further rotated in the same direction, the light is turned on again. In addition, cassette 1
In the state in which the bag 1 is tilted forward to replace the bag F, the bag support shafts 31 and 32 are rotated downward against the springs 33 and 34 by the rotation of the lever 37, and after the bag F is refilled. When the cassette 11 is set, the holding pins 13 and 14 engage with the bag support shafts 31 and 32 at the notches 13a and 14a.

As shown in FIG. 3, the right ice accommodating and charging mechanism 40A is a tank 41a which is assembled to the frame 91 and accommodates the 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 an auger 43 for transporting ice from the lower part of the tank 41a along the transport chute 42a.
a 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. The tank 41a is provided above the tank 41a in case of an abnormality.
A water sprinkling pipe 45a for melting the ice therein is provided, and water can be supplied from the outside to the water sprinkling pipe 45a via a water supply valve 46a driven by an electromagnetic solenoid SLa. 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 and turns on when the ice in the tank 41a is almost full. The left ice accommodating and charging mechanism 40B is configured symmetrically with the right ice accommodating and charging mechanism 40A, and has the same tank 41b, transfer chute 42b, auger 43b, drain pipe 44b, sprinkler pipe 45b and electromagnetic solenoid SLb as described above. Built-in water supply valve 46
b (not shown). In the following description, “right” is given to each component in the right ice storage / injection mechanism 40A, and the left ice storage / injection mechanism 40A is referred to.
"Left" is given to each component in B to be referred to. 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 is assembled, and the switch SW9 is turned on when the seal bar 52 is in the lower position due to the rotational position of the shaft 58, and is 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, 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 measuring mechanism 70 has a receiving 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 receiving plate 72, and an optical system for measuring the weight on the receiving plate 72 is provided below the receiving 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 receiving plate 72 exceeds a predetermined value.

The automatic ice bagging apparatus B is equipped with an electric control unit 80 for controlling the above-mentioned electric motors M1 to M6, electromagnetic solenoids SLa and SLb, and the heater 51a. As shown in FIG. 13, the electric control device 80 includes a microcomputer 8 connected to the detection switches SW1 to SW16.
1 (hereinafter, simply referred to as microcomputer 81), the same microcomputer 81
A drive circuit 82, a disconnection sensor 83, a warning device 84, and a power switch 85 connected to the. The microcomputer 81 and the drive circuit 82 are built in the electric control device body 80A shown in FIGS. 1 and 2, and the microcomputer 81 executes a program corresponding to the flowcharts shown in FIGS. 14 to 17 by turning on the power switch 85. The drive circuit 82 is controlled by the microcomputer 81 to drive the electric motors M1 to M6 and the heater 51a. The disconnection sensor 83 is composed of an ammeter that detects the presence or absence of a current flowing through the heater 51a, and outputs a detection signal indicating the disconnection when the heater 51a is disconnected. The disconnection sensor 83 may be composed of a temperature sensor, and a detection signal indicating the disconnection may be output when the temperature of the heater block 51 does not rise when the heater 51a is energized. The warning device 84 and the power switch 85 are provided on an operation panel 80B opened to the outside through a window B1 formed in the front cover of the automatic bagging apparatus B. The warning device 84 includes a buzzer, an indicator, etc., and informs the user of the occurrence of an abnormality in the sealing operation of the bag F. The power switch 85 starts the operation of the automatic bagging device B.

Next, the operation of the embodiment configured as described above will be described. When the power switch 85 is turned on, the microcomputer 81 starts execution of the "main program" in step 100 of FIG. 14, and repeatedly executes the circulation process including steps 102 to 110. In step 102, the microcomputer 81 executes a bag carry-in process for carrying in one of the many bags F housed in the bag housing mechanism 10 above the base 61. In this process, first, the electric motor M1 is normally rotated. By the normal rotation of this electric motor M1,
The main arm 21 begins to rotate 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. 12, and the front surface of the plate 24 fixed to the sub arm 22 contacts the bag F accommodated in the cassette 11. The rotation of the arm 22 stops at the point of contact. After that, since the electric motor M1 continues to rotate in the forward direction, the main arm 21 continues to rotate further by the action of the leaf springs 23a and 23b to move the pins 26 and 26 to the springs 27 and 27.
Press forward against. As a result, the swing lever 2
As shown on the left side of FIG. 12, the movable claws 25a, 25 move the rear side surface of one bag F on the most front side among the large number of bags F housed in the cassette 11, as shown in the left side of FIG. 25a and the fixed claws 24a, 24a formed on the plate 24, respectively. 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 the ON operation of the detection switch SW2, the microcomputer 81 stops the reverse rotation of the electric motor M1. At this time, the swing levers 25, 25 are still holding the rear side surface of the bag F by the movable claws 25a, 25a by the action of the springs 27, 27, so that the bag F moves on the bag support shafts 31, 32. At the same time, as shown on the right side of FIG. 12, the attachment piece Fa on the front side surface of the bag F abuts the stoppers 31a and 32a, and the upper opening is widened. Further, the mounting piece Fa of the bag F is the stopper 3
When in contact with 1a, 32a, the sub arm 22
By the rotation of the
Since it is rotated counterclockwise in FIG. 7 against 3, 34, the light-shielding plates 35, 36 are also rotated to turn off the detection switches SW4, SW5 that were initially in the ON state.

After the processing of step 102, the microcomputer 8
In step 104, 1 executes base center position setting processing for setting the base 61 at the center height position. In this processing, the microcomputer 81 feedback-controls the rotations of the electric motors M5 and M6 according to the signals from the detection switches SW11 and SW14, and sets the base 61 to the center height position. This central height position is, as shown in FIG.
The height of the bottom of the bag F supported by the support shafts 31 and 32 does not reach the base 61.

Next, the microcomputer 81 executes step 1 in FIG.
At 06, an ice throwing measurement processing routine is executed. In this ice throwing measurement processing routine, first, the electric motor M2 or the electric motor M3 is normally rotated. This allows the right auger 4
3a or the left auger 43b starts to rotate, and the right tank 41
a or ice in the left tank 41b is the right transport chute 42a.
Alternatively, it is sequentially conveyed upward through the left conveyance chute 42b and begins to be loaded into the bag F supported by the support shafts 31 and 32. In this case, the detection switch
SW6L and SW7L are both on and both tanks 41a and 41b
If there is more than one bag of ice inside, fill it with ice in both tanks 41a,
An electric motor is used to load the bags alternately from 41b.
The M2 or the electric motor M3 is alternately rotated in the forward direction for each circulation process including steps 104 to 116. Meanwhile, the detection switch
If only one of SW6L 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 and SW7L is on Only M3 is rotated forward. Also,
At the same time when the ice is thrown in, the electric motors M5 and M6 are normally rotated to raise the base 61 to the upper position so that the load of the ice thrown into the bag F is not applied to the support shafts 31 and 32.
The entire load is supported only by the base 61 (support 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 a "seal processing routine" for sealing the upper portion of the ice-filled bag F supported by the bag support mechanism 30 in step 108. This "seal processing routine" is shown in detail in FIGS. 15 to 17, and the microcomputer 81 starts the execution of the routine at step 200, and at step 202 the timer value BKTM for detecting an abnormality in the sealing operation. Is initially set to "0". The timer value BKTM of this type is incremented by "1" every predetermined time by the execution of an "interrupt program" (not shown) which is performed every predetermined time during execution of the "main program". Next, the microcomputer 8
In step 204, 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 part of the front side surface of the bag F locked by the shafts 31 and 32 starts moving toward the heater block 51 as the shafts 31 and 32 rotate counterclockwise.

After the processing of step 204, the microcomputer 8
1 is an electric motor by the processing of steps 206 to 210
M5 and M6 are reversely rotated for 3.5 seconds, and then the motors M5 and M6 are stopped for 2 seconds and then forwardly rotated for 1 second. This allows
The base 61 (receiving plate 72) stands still at a height position slightly lower than the upper position (the state shown in FIG. 19B). In this case, the base 61 is once lowered and then raised again in order to prevent the base 61 from being largely lowered due to gravity. In this state, the bag F is supported by the support shafts 31 and 32 and also supported by the receiving plate 72, and the bag F is in an expanded state due to the weight of ice. On the other hand, the microcomputer 81 executes the step 2
After the processing of 10, the circulation processing of steps 212 and 214 is continued until the detection switch SW9 is turned on or the timer value BKTM becomes a value corresponding to 90 seconds. If the seal mechanism 50 is operating normally, the seal bar 52 reaches the lower position and the detection switch SW9 is turned on 90 seconds after the forward rotation of the electric motor M4 is started. In response to the ON operation of the detection switch SW9, the microcomputer 81 makes a “YES” determination at step 212 to proceed to step 21.
At 6, the forward rotation of the electric motor M4 is stopped. At this time, the movable claws 2 of the swing levers 25, 25 of the bag carry-in mechanism 20
5a and 25a are fixed claws 24a and 2 of the plates 24 and 24.
Since the rear side of the bag F is held between the seal bar 52 and the heater 4a, the upper portion of the seal bar 52 is sandwiched between the heater block 51 and the front side of the bag F. When the bag F is sandwiched, the bag F is stretched downward due to the lowering of the receiving plate. Therefore, the upper part of the bag F is properly sealed with the heater block 51 without wrinkling. It is sandwiched between the bar 52.

On the other hand, almost simultaneously with this pinching, the seal bar 52 presses the release lever 28 of the bag carry-in mechanism 20 in the clockwise direction in FIG. 4, so that the upper side of the lever 28 is pin 2
6, 26 are pressed to the right in FIG. As a result, the swing levers 25, 25 rotate and the holding of the bag F by the movable claws 25a, 25a is released. In this released state, the action of the springs 27, 27 causes the main arm 2 to move.
1, the sub arm 22, the swing levers 25, 25, etc. are shown in FIG.
It is kept in the center of 2.

Next, the microcomputer 81 reverses the electric motor M4 in step 218, sets the flag SBMD indicating the control state of the motor M4 to "1", and defines the operating time of the motor M4. Initialize the timer value SBTM to "0". The reverse rotation of the electric motor M4 causes the seal bar 52 to start moving upward. Further, the microcomputer 81 rotates the electric motors M5 and M6 in the normal direction in steps 220 and 222, and sets the flags RBMD and LBMD indicating the control states of the motors M5 and M6 to "1". This electric motor M5, M
By the forward rotation of 6, the base 61 (receiving plate 72) begins to rise. Then, the microcomputer 81 uses steps 224 to 242.
The cyclic process consisting of is repeatedly executed. When 2 seconds elapse from the start of the reverse rotation of the electric motor M4 during this circulation processing, the microcomputer 81 stops the reverse rotation of the electric motor M4 by the processing of steps 224 to 228 and resets the flag SBMD to "0". By the reverse rotation of the electric motor M4 for 2 seconds, the upper part of the bag F sandwiched by the heater block 51 and the seal bar 52 is slightly loosened. Further, during the same circulation process, when both ends (receiving plate 72) of the base 61 reach the upper position, the microcomputer 81 causes the steps 230 to 23 to proceed.
4 and the processing of steps 236 to 240 stops the forward rotation of the electric motors M5 and M6, respectively, and resets the flags RBMD and LBMD to "0". And the flag SBMD, R
When all of BMD and LBMD are returned to "0", the microcomputer 8
1 determines "YES" in step 242 and advances the program to steps 244-248. In this state,
The upper portion of the bag F is loosely sandwiched between the heater block 51 and the seal bar 52, and the bag F has a base 61.
It is supported by (support plate 72). Step 244
At ˜248, the microcomputer 81 rotates the electric motor M4 forward until the detection switch SW9 is turned on. As a result, the sandwiching by the heater block 51 and the seal bar 52 on the upper portion of the bag F is performed again, and the sandwiching becomes firm.

Next, the microcomputer 81 energizes the heater 51a in step 250 and initializes a timer value HTM for defining the energization time to "0", and in step 252, the disconnection sensor 83 Based on the detection signal, it is determined whether or not the heater 51a is broken. Heater 51
If a is not disconnected, the microcomputer 81 proceeds to step 25.
It is determined to be "NO" in 2, and the circulation process including steps 252 and 254 is repeatedly executed until the timer value HTM reaches a value corresponding to 0.6 seconds. When 0.6 seconds have elapsed from the start of energization of the heater 51a, the microcomputer 81 makes a “YES” determination at step 254 to proceed to step 25
At 6, the power supply to the heater 51a is released. This allows
The upper portion of the bag F is melted, the front side surface and the rear side surface are adhered, and the upper portion is sealed. At this time, since the bag F is supported by the base 61 (receiving plate 72), even if the upper portion of the bag F melts, the upper portion does not break. Next, the microcomputer 81 waits for 2 seconds to cool the upper portion of the bag F in step 258, and then reverses the electric motor M4 by the processing of steps 260 to 264 until the detection switch SW8 is turned on, that is, the seal bar 52 is turned on. Move it to the upper position,
At step 266, the execution of this "seal processing routine" is terminated.

After the end of the "seal processing routine", the microcomputer 81 executes a bag drop processing for dropping the bag F containing ice into the stocker C in step 110 of FIG. In this process, first, the electric motors M5, M6 are driven in reverse, and the bases 6 are driven by the action of the links 62-65.
1 descends. In this case, the base 61, which was initially in the upper position as shown in FIG. 19B, descends to the lower position in FIG. 19C. In this state, the detection switches SW12 and SW15 are turned on, and the microcomputer 81 stops the reverse rotation of the electric motors M5 and M6 in response to the ON operation of the switches SW12 and SW15. Next, the microcomputer 81 causes the electric motor M6 (or the electric motor M5) to rotate normally. This allows the base 61
The left edge (or right edge) of the bag rises, and the bag F containing ice is
As shown in FIG. 9 (D), it slides down from the base 61 and falls into the stocker C. 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. When the left end (or right end) of the base 61 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 forward rotation of the electric motor M6 (or the electric motor M5) is stopped. After that, the microcomputer 81 detects the detection switches SW11 and SW14.
The electric motors M5 and M6 are rotated by the cooperation with the electric motors M5 and M6 to move both ends of the base 61 to the central position.

After the processing of step 110, the microcomputer 8
In step 1, the program is returned to step 102, and the circulation process including steps 102 to 110 is repeatedly executed. In this way, the microcomputer 81 carries in the bag F, the ice accommodating and charging mechanisms 40A and 40B for charging ice into the bag F until the weighing mechanism 70 detects a predetermined amount of ice, and the sealing mechanism 50. By sequentially controlling the sequence operation including the sealing operation of the bag F by the drop mechanism and the dropping operation of the bag F by the drop mechanism 60, a predetermined amount of ice is sequentially packed, and the packed ice is sequentially packed one bag at a time. Accumulate in C.

The above description is for the case where the operation of the seal mechanism 50 is normal, and then for the case where an abnormality occurs in the mechanism 50. First, a case where an abnormality has occurred in the mechanism for moving the seal bar 52 such as the electric motor M4 to the lower position will be described. In this case, even if the electric motor M4 is normally rotated in step 204 of FIG.
Does not descend to the lower position, or takes a long time to descend. Therefore, in this case, the microcomputer 8
1 is “YES” in step 214, that is, the timer value BKTM is 9 during the circulation process including steps 212 and 214.
It is determined that the value is equal to or greater than the value corresponding to 0 second, and the program proceeds to steps 268 and 270. In step 268, data indicating that the seal mechanism 50 is abnormal is output to the warning device 84, and the warning device 84 displays the abnormality on the display and sounds a buzzer sound. As a result, the user can easily recognize that an abnormality has occurred in the seal mechanism 50. In step 270, the electromagnetic solenoids SLa, SLb are energized for 80 minutes. As a result, water from the outside is supplied to the sprinkler 45 through the water supply valves 46a and 46b.
a, 45b, and the sprinklers 45a, 45b sprinkle water on the ice in the tanks 41a, 41b.
The ice in a and 41b is melted and discharged to the outside through the water distribution pipes 44a and 44b. Therefore, even if an abnormality occurs in the sealing mechanism 50 and the ice in the tanks 41a and 41b is not packed in the bag for a long time, the ices in the tanks 41a and 41b are stuck (arched) with each other and the ice is not stored thereafter. The operation of the closing mechanisms 40A and 40B will not be abnormal. After the processing of steps 268 and 270, the microcomputer 8
1 stops the execution of the program in step 272, that is, stops the control of the sequence operation of each mechanism. Thereby, it is possible to prevent the ice from being scattered in the automatic bagging device B and the stocker C without being packed with the ice.

On the other hand, when the heater 51a is broken,
The microcomputer 81 determines "YES" in step 252, that is, the heater 51a is disconnected during the circulation process including steps 252 and 254 in FIG. 17, and advances the program to steps 274 and 276. In step 274, data indicating that the heater 51a is disconnected is output to the warning device 84, and the warning device 84 displays the disconnection of the heater 51a on the display and sounds a buzzer sound. This allows the user to easily recognize that the heater 51a has broken. In step 276, the tank 4 is processed by the same processing as in step 270.
The ice in 1a and 41b is melted. Therefore, even in this case, even if the heater 51a is disconnected and the ice in the tanks 41a and 41b is not bagd for a long time, the same tank 41a
The ice insides a and 41b will not stick to each other (arching), and the subsequent operation of the ice storage and input mechanisms 40A and 40B will not be abnormal. Steps 274, 27
After the processing of 6, the microcomputer 81 stops the execution of the program in step 278, that is, the control of the sequence operation of each mechanism is stopped. Thereby, also in this case, it is possible to prevent the ice from being scattered in the automatic bagging apparatus B and the stocker C without being packed with the ice.

In the above embodiment, the measuring mechanism 7
A predetermined amount of ice is measured by the weight measurement of 0.
Although it is designed to be put into the bag F by A and 40B,
Instead of the weight measurement by the weighing mechanism 70, a predetermined amount of ice may be packed in a bag by defining an ice introduction time by the ice storage and input mechanisms 40A and 40B. Further, in the above embodiment, the case of bagging ice was described, but this automatic bagging device is not limited to ice, and confectionery, candy, and other items can be bagged. In this case, it is advisable to store the items instead of ice in the tanks 41a and 41b, and to omit the sprinkling process when the heater 51a is abnormal. Further, in the above embodiment, the heater block 51 is fixed to the frame 91 and the seal bar 52 is movable. However, this relationship is reversed, and the heater block 5 incorporating the heater 51a is reversed.
The seal bar 52 may be fixed to the frame 91 by making 1 movable. Further, both the heater block 51 and the seal bar 52 may be movable. Furthermore, in the above-mentioned embodiment, 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. .

[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.

FIG. 7 is a side sectional view of a bag storing mechanism and a bag supporting mechanism.

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

9A is a front view of the bag, and FIG. 9B is a side view of the bag.

FIG. 10 is a perspective view of the bag loading mechanism as seen from the front side.

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

FIG. 12 is a plan view showing an operating state of the bag loading mechanism.

FIG. 13 is a block diagram of an electric control device.

FIG. 14 is a flowchart of a “main program” executed by the microcomputer of FIG.

FIG. 15 is a front part of the flowchart showing the details of the “seal processing routine” in FIG. 14;

FIG. 16 is an intermediate part of a flowchart showing details of the routine.

FIG. 17 is a rear part of the flowchart showing the details of the routine.

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

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

[Explanation of symbols]

A1, A2 ... Ice machine, B ... Automatic bag filling device, C ... Stocker, F ... Bag, 10 ... Bag storage mechanism, 11 ... Cassette, 20
... bag carry-in mechanism, 20a ... chuck mechanism, 21 ... main arm, 30 ... bag support mechanism, 31, 32 ... bag support shafts, 40A, 40B ... ice accommodating and charging mechanism, 41a, 41b
... Tank, 43 ... 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 ... Receiving plate, 81 ... Microcomputer (microcomputer), 83 ... Warning device, M1 to M6 ... Electric motor, SW1 to SW16 ... Detection Switch, SLa, SLb ... Electromagnetic solenoid.

Claims (6)

[Claims] 1. A bag accommodating mechanism accommodating a large number of bags that are melted by heat, and one bag from the bag accommodating mechanism is loaded onto a receiving plate and the upper opening of the loaded bag is widened to the upper part. Bag supporting mechanism for supporting and supporting a plurality of items, a tank for accommodating a large number of items, an inputting mechanism for sequentially conveying the contained items and inserting a predetermined amount into the supported bag, and a heater block containing a heater. , Having a seal bar that presses the upper part of the bag against the heater block and a first movable mechanism that drives the seal bar or the heater block to move the seal bar relatively to the heater block. A seal mechanism for sealing the upper part of the bag, a bag loading operation by the bag loading support mechanism, an item loading operation by the loading mechanism, and a bag sealing operation by the sealing mechanism. And a second movable mechanism for moving the receiving plate up and down in the automatic bagging device for sequentially bagging the predetermined amount of articles. A second sandwiching an upper part of the bag between the heater block and the seal bar by operating the first movable mechanism while controlling the second movable mechanism to lower the receiving plate to a height at which the bag is stretched; A first control means, and after the control by the first control means, the second movable mechanism is controlled to energize the heater for a predetermined time in a state where the receiving plate is raised to a height at which the bag is supported by the receiving plate. Control means and the second
An automatic bag filling device, comprising: a third control means for controlling the first movable mechanism after the control by the control means to release the sandwiching of the bag by the heater block and the seal bar. 2. The second control means according to claim 1, wherein the first movable mechanism is controlled after the receiving plate is raised and before the heater is energized to temporarily release the sandwiching of the bag. An automatic bagging device, further comprising re-pinching control means for pinching the bag again between the heater block and the seal bar. 3. A bag accommodating mechanism that accommodates a large number of bags that are melted by heat, and a bag that carries the bags from the bag accommodating mechanism one by one to a predetermined position and expands and supports the upper opening of the bag. A loading support mechanism, a tank that stores a large number of items, a loading mechanism that sequentially conveys the stored items and puts a predetermined amount into the supported bag, and an upper portion of the bag in which the items are loaded. A sealing mechanism for sealing, an electric control device for repeatedly controlling a sequence operation including a bag loading operation by the bag loading support mechanism, an item loading operation by the loading mechanism, and a bag sealing operation by the sealing mechanism, and In an automatic bagging device for sequentially packing a predetermined amount of articles, the electric control device includes an abnormality detection unit that detects an operation abnormality of the sealing mechanism, and a sheet sealer when the abnormality is detected. Automatic bagging apparatus characterized by comprising a stop control means for stopping Nsu operation. 4. The automatic bagging apparatus according to claim 3, wherein the sealing mechanism includes a heater block having a heater built therein, a seal bar for pressing the upper portion of the bag to the heater block, the seal bar or the heater. A movable mechanism that drives the block to move the seal bar relatively to the heater block, and the electric control device controls the movable mechanism so that the upper part of the bag is connected to the heater block and the heater block. The first control means sandwiched between the seal bar, the second control means for energizing the heater for a predetermined time after the control by the first control means, and the movable mechanism by controlling the movable mechanism after the control by the second control means. A heater block and third control means for releasing the sandwiching of the bag by the seal bar are provided, and the abnormality detection means is provided for the bag control by the first control means. Automatic bagging apparatus characterized by being configured with means for detecting that has passed a predetermined time or more to see write. 5. The automatic bagging apparatus according to claim 3, wherein the abnormality detecting means is constituted by means for detecting a break in the heater. 6. The automatic bagging device according to claim 3, wherein the article is ice, a sprinkler for melting the ice is provided in the tank, and the stop control means is provided in the electric control device. An automatic bagging device comprising melting control means for operating the sprinkler when the sequence operation is stopped.