JPH0635170B2 - Control device for double-row automatic bag making machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention automatically manufactures bags having different sizes by sealing and cutting the bag-making material in the process of transferring in parallel in a plurality of rows. The present invention relates to a control device for a bottom-seal type double-row automatic bag making machine.

(Prior Art) Conventionally, as an example of a bottom seal type automatic bag making machine, there is one described in Japanese Utility Model Laid-Open No. 25622/1990. The automatic bag-making machine described in this publication has a sealer that seals the bag-making material that has been intermittently transferred and a cutter that cuts the bag-making material after sealing, and the sealer and the cutter are the same seal. It is configured to be driven by a cutting servo motor and to transfer the bag-making material by a single transfer servo motor that is provided separately from the seal-cutting servo motor. It is to manufacture bags.

(Problems to be Solved by the Invention) Since the above-mentioned conventional automatic bag-making machine manufactures bags of the same size from a line of bag-making material, it is practically extremely difficult to manufacture bags of different sizes. Is.

However, recently, there has been an increasing demand for manufacturing bags of various sizes, and realization of an automatic bag-making machine capable of coping with the increase has been expected.

Therefore, in the present invention, in the process of transferring the bag-making material in parallel in a plurality of rows, the bag-making material in each row is sealed, and in a bottom-seal type double-row automatic bag-making machine for bag making by cutting, It is a technical problem to be solved to meet the production requirements of bags of various sizes by providing a control device for automatically producing bags of various sizes.

(Means for Solving the Problem) A technical means for solving the above-mentioned problems is a set of sealing devices for sealing the bag-making material in each row in the process of transferring the bag-making material in parallel in a plurality of rows, Having a set of cutter device for cutting the bag-making material of each row after the end of sealing, and driving the one set of sealing device and one set of cutter device by the same seal cutting servomotor, A bottom seal type double-row automatic bag-making machine control device configured to intermittently transfer the bag-making materials in each row in parallel by a plurality of transfer servomotors provided separately from the seal-cutting servomotor. Is a bag-making dimension setting means for setting the length of the bag manufactured from each bag-making material for each bag-making material in each row, and the bag-making length of each row set by the bag-making dimension setting means. The bag-making material in each row is intermittently transferred according to In the process of being
Feed speed calculation means for calculating the feed speed of each of the plurality of transfer servo motors so that the bag-making materials in each row are stopped substantially at the same time, and the feed speed of each of the transfer servo motors calculated by the feed speed calculation means. Based on the above, the transfer servomotor is rotationally driven, and the seal cutting servomotor is driven in a state in which the bag-making materials of the respective rows are stopped substantially at the same time, and driving for sealing and cutting the bag-making materials of the respective rows. And a control means.

(Operation) According to the control device for the double-row automatic bag-making machine having the above-described configuration, the bag-making size setting means sets the length of the bag manufactured from each bag-making material for each row of bag-making material. Then, the feed rate calculation means calculates the feed rate of each of the plurality of transfer servomotors corresponding to the bag making length set by the bag making dimension setting means. Then, the drive control means intermittently drives the respective transfer servomotors based on the feed speeds of the respective transfer servomotors calculated by the feed speed calculation means, and sets the respective bagmaking materials in the bagmaking dimension setting means. The bag is moved by a distance corresponding to the bag-making length, stopped when the seal position and the cut position are reached, and the seal and cut are performed in the stopped state.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a bottom seal type in which a double sheet-shaped bag-making material M in which a cylindrical long synthetic resin film is flatly folded is intermittently transferred in parallel in two rows, and sealed and cut at predetermined intervals. FIG. 3 is a front view of a double-row automatic bag making machine 1 for manufacturing the bag body of FIG.

As shown in FIG. 1, at the upper end of the frame 32, 33 in which two rows of bag-making material M pass in parallel are formed from the rear end to the front end of the frame 32.
The tension is adjusted by a pair of feeding mechanisms (not shown) and the feeding mechanism is fed into the passage 33. Each bag-making material M sent into the passage 33 is slidably in contact with the upper surface of the conveyor 9 rotatably installed at the center of the upper end of the frame 32, and further moves to the upper front of the conveyor 9 in the vertical direction. It is hooked in an inverted V shape on a length adjusting roller 35 which is horizontally mounted so as to be adjustable, advances to the front end of the passage 33, and is forwarded by a carrying-out mechanism (not shown).

A controller 200 incorporating a microcomputer for controlling various operations of the entire automatic bag making machine 1 is installed near the frame 32, and three servo motor drivers 201, 202, 203 are connected to the controller 200.

Above the rear portion of the frame 32, there are first and second mark detection sensors 209 for detecting marks, patterns, etc., which are marked on the bag-making material M at regular intervals in correspondence with the bag length of the bag body to be manufactured. 210 is installed close to the passage 33, and a detection signal is input to the controller 200 every time a mark or the like passes directly under both mark detection sensors 209, 210.

A feed 1 servomotor 91 and a feed 2 servomotor 92, which can be speed-shifted by a command signal from the controller 200, are arranged side by side in the front and rear of the frame 32, and the encoders 20 are respectively provided in the motors 91 and 92.
4,205 are attached. The motor 91 is based on the one-time feed length of the bag-making material M input in advance to the controller 200, the detection signal of the first mark detection sensor 209, and the output signal of the encoder 204.
The gear shift control is performed in accordance with the gear shift command signal output by, and the rotation is intermittently driven. The motor 92 also feeds the bag-making material M once fed into the controller 200 in advance, the detection signal of the second mark detection sensor 210, and the encoder 2.
It is controlled according to the shift command signal output from the controller 200 based on the output signal of No. 05, and is rotationally driven intermittently.

Above the motors 91 and 92, the first feed roll drive shaft 13 and the second feed roll drive shaft 14 are provided with the passage 33.
It is laid horizontally and in parallel along the width direction.

At the upper end of the front part of the frame 32, a pair of upper and lower first feed rolls 6 and 6 is rotatably provided above the second feed roll drive shaft 14 and has a length of about 1/2 of the passage width. A pair of upper and lower feeding rolls 25 and 25 rotatably laid horizontally in front of the first feed rolls 6 and 6, and a large number of pairs mounted on the first feed rolls 6 and 6 and the feeding rolls 25 and 25. The first feeding mechanism 36 having the spring belts 26, 26 is installed to intermittently feed the first bag-making material M, and the second feeding mechanism having the same configuration is provided to the side of the first feeding mechanism 36. A mechanism is provided to intermittently feed the second bag-making material M.

The output rotation of the motor 91 is transmitted to the first feed roll drive shaft 13 via the pulley and the belt, and the rotation of the first feed roll drive shaft 13 is transmitted to the lower first feed roll 6 via the pulley and the belt. Then, the first feeding mechanism 36 is driven. Similarly, the output rotation of the motor 92 drives the second feeding mechanism.

A servo motor 93 capable of gear shift control by a command signal from the controller 200 is installed in the lower rear portion of the frame 32, and an encoder 206 is attached to the motor 93. A seal reduction gear 5 provided with a clutch 214 and a brake 17 is provided on a side of a connecting shaft 41 directly connected to an output shaft of a motor 93 via a coupling 18, and a brake 1.
6 and a reducer 4 for a cutter (cutter device) having a clutch 215 attached on both sides, and rotation of the connecting shaft 41 is transmitted to both reducers 4, 5 via a pulley and a belt. There is.

Above the sealing speed reducer 5, a sealing drive shaft 15 through which the output rotation of the sealing speed reducer 5 is transmitted via a sprocket wheel 27 and a chain is rotatably provided horizontally. A sensor operation piece having a protrusion is attached to one end of the sensor so as to face a sensor 211 for detecting an upper end position, which will be described later.

Next, the seal device will be described. A pair of front and rear cam shafts 42, which are rotatably laterally installed near the upper end central portion of the frame 32 and transmit the rotation of the sealing drive shaft 15 through a sprocket wheel and a chain, Sealing cams 10 are fitted to the left and right ends of the roller 42, and the sealing cams 10 are arranged at evenly eccentric positions.
0a is attached.

A pair of right and left laterally long elevating plates 43 are attached to both side surfaces near the center of the upper end of the frame 32 so as to be vertically movable.
Horizontally elongated guide holes, into which the rollers 10a of the sealing cam 10 are fitted, are formed at the front and rear ends of both the elevating plates 43. The rail 43b is horizontally attached, and the lifting plate 43 is synchronously repeatedly moved up and down by the rotation of the sealing drive shaft 15 to repeatedly move the sealing mechanism 23 up and down.

In order to weld the upper and lower films of the bag-making material M linearly along the width direction at predetermined intervals, the sealing mechanism 2 is provided above the vicinity of the central portion of the frame 32 along the width direction of the passage 33.
3, the seal bar holder 5 installed above it
Shafts are formed to project at the left and right ends of 5, respectively,
Both shafts are non-rotatably pressed, and the seal bar holder 55 is jointly connected to both bearings so as to be able to move up and down in response to the repeated up and down movements of the elevating plates 43, and is supported in a cantilevered manner.

Below the seal bar holder 55, a seal bar 8 for heat sealing, which is attached to the lower surface of the seal bar holder 55 via a bracket 56, is installed horizontally along the width direction of the passage 33. The seal 8
a is formed in a sharp shape.

Below the sealing mechanism 23, when the seal bar 8 descends to the sealing position near the bottom dead center, the bag-making material M is nipped between the seal bar 8 and the bag-making material M to escape downward. In order to prevent it, a pedestal 24 is installed horizontally above the upper part of the frame below the upper part of the conveyor 9, and the sealing cam 10 is installed.
Is rotated once from the top dead center, the seal bar holder 55
And the seal bar 8 and the bearings 52 have a top dead center of 1
A part of the bag-making material M descends and rises and the seal bar 8
And a pedestal 24 is sealed.

The seal bar 8 performs an ascending / descending operation of descending from the top dead center to the seal position near the top dead center and rising again to the top dead center each time the sealing cam 10 makes one rotation.

Next, the cutter device will be described. The cutter cam 11 is fitted to the cutter drive shaft 29 which is directly connected to the output shaft of the cutter reducer 4 and is rotationally driven to excite the clutch 215. .

The blade cam 11 is movably linked to a lower piece 12a of a pair of left and right swing levers 12 that are pivotally supported in front of the blade drive shaft 29 through a connecting rod 63. There is.

A fixed blade 62 is installed at a front end on the frame 32 and slightly in front of the both feeding mechanisms 36, and at the front end of the frame 32, in cooperation with the fixed blade 62, the bag-making material M is cut at predetermined intervals. A movable knife 7 that is opposed to the fixed knife 62 is installed so as to be vertically movable. The upper and lower ends of a connecting rod 64 that is connected to both swing levers 12b are connected to the left and right ends of the movable knife 7, The movable blade 7 moves up and down in synchronization with the lifting and lowering of the seal bar 8 for each rotation of the cam 11 for operation,
The bag-making material M is cut.

Next, the control device of the automatic bag making machine 1 will be described.

FIG. 2 is a board surface layout diagram of the operation panel 100 connected to the controller 200 of the automatic bag making machine 1.

On the operation panel 100, a 4-digit display 101 and four switches 102, 103, 1 provided for each digit
Reference numerals 04 and 105 configure a first feed amount setting unit for setting and displaying the feed amount of the bag-making material M in units of millimeters. Also, a 4-digit display 106 and four switches 107, 108, 109, 1 provided for each digit
10 sets the feeding amount of the bag-making material M in millimeters,
It constitutes a second feed amount setting unit for displaying.
The feed amounts set in the first feed amount setting unit and the second feed amount setting unit are the first feed amount (feed 1) and the second feed amount (feed Used as 2).

Also, a 2-digit display 111 and a 2-digit display provided for each digit
The individual switches 112 and 113 configure a feed amount correction setting unit that is set and operated when it is necessary to correct the feed amount according to bag making.

The 5-digit display 114 displays the feed amount of the bag-making material M in units of millimeters in real time.

The 3-digit display 115 and the three switches 116, 117 and 118 provided for each digit constitute a sealing time setting unit for setting and displaying the sealing time by the sealing device.

The three-digit indicator 119 and the three switches 120, 121, 122 provided for each digit have a feed delay time setting unit for setting the time from the completion of sealing to the start of feeding the bag-making material M. I am configuring. This is because when the bag-making material M is thick and the sealing time is set to be long, or when the bag-making material M is easily melted, when the feeding is started immediately after the completion of the sealing, the bag-making material M is pulled by the feeding force.
This is because there is a risk of damage.

The three-digit display 123 and the three switches 124, 125, 126 provided for each digit are the feed amount set by the first feed amount setting unit and the second feed amount setting unit ( The feed speed automatically calculated based on the feed length is set as 100%, and the feed speed multiplying factor setting unit for setting and displaying the% speed when decelerating the actual feed speed to the desired speed is configured. is doing.

Further, the three-digit display 127 constitutes a display unit for displaying the number of manufactured sheets per minute.

Switch 128 and two LED indicators 129, 130
Configures a mode setting unit for automatically controlling the automatic bag making machine 1 or switching between automatic and manual modes when performing manual control, and displaying the respective modes.

Switch 131 and four LED indicators 132, 133,
The reference numerals 134 and 135 constitute a product selection section for selectively setting and displaying whether the bag-making material M is plain or has a mark or a pattern. In the product selection section, when the LED display 132 is turned on, the bag is made from the blank bag-making material M. When the LED indicator 133 is turned on, the bag-making material M has a mark and is transferred by the feed roller in the first row of the automatic bag-making machine 1, or the bag-making material M is wide. Therefore, the bag is made from the bag-making material M that needs to be transferred by the two rows of feed rollers. Also LED
When the indicator 134 is turned on, the bag-making material M has a mark and is made from the bag-making material M transferred by the second row feed roller. Further, when the LED indicator 135 is turned on, the bag-making material M has a mark, and the two rows of bag-making material M are transported by the first-row feed roller and the second-row feed roller, respectively. Bags are made from each.

Switch 136 and four LED indicators 137, 138,
Reference numerals 139 and 140 constitute a bag-making pattern selection unit that selects a bag-making pattern and displays the selected pattern.

When the LED indicator 137 is turned on in the bag making pattern selection unit and the first pattern is selected, bag making is performed in a continuous process of “feeding → sealing and cutting → feeding ...”. In the bag-making process according to the first pattern, the bag-making material M is fed at a total descending amount of the feed amount set by the first feed amount setting unit and the corrected feed amount set by the feed amount correction setting unit. Sealing and cutting are performed at the same time when the bag-making material M is stopped, and is selected when continuously manufacturing relatively short-sized bags.

Next, in the bag making pattern selection unit, the LED display 138
When is turned on and the second pattern is selected, “Feed 1 → Ceiling → Feed 2 → Cutting → Feed 1
→. ． ． The bag is made in the process. This second pattern is selected when manufacturing a long bag that cannot be manufactured by the first pattern, and the feed 1 is the feed set by the first feed amount setting unit. Is a step of feeding the bag-making material M with a total feed amount of the amount and the correction feed amount set by the feed amount correction setting unit, and feed 2 is the feed amount and feed set by the second feed amount setting unit. In this step, the bag-making material M is fed at a total feed amount including the correction feed amount set by the amount correction setting unit. Therefore, when the length that can be produced by the first pattern is limited to, for example, 3 meters, the second pattern is selected when producing a bag having a length of 5 meters. In this case, the first feed amount setting unit establishes 5000 mm, and the second feed amount setting unit sets 2000 mm, whereby the bag-making material M is fed 1 (5000-2000).
= 3000 mm, transported in a stopped state, sealed, then transported by 2000 mm in a feed 2, and cut in a stopped state to make a bag. still,
In this case, for convenience of explanation, the set amount in the feed amount correction setting unit is set to zero.

Next, in the bag making pattern selection unit, the LED display 139
When is lit up and the third pattern is selected, "Feed 1 → Ceiling → Feed 2 → Ceiling and Cutting →
Send 1 →. ． ． The bag is made in the process. This process is selected when one bag requires two seals (double seal), and it is basically the same as the second pattern, but after feeding 2, sealing is performed. And cutting is done at the same time.

When the LED indicator 140 is turned on in the bag making pattern selection section and the fourth pattern is selected, the feeding 1
This is a bag manufacturing process when the servo motor 91 and the feed 2 servo motor 92 are separately driven to manufacture bags of different lengths from the two rows of bag manufacturing material M. In this step, the feed amount by the feed 1 servo motor 91 is the total feed amount of the feed amount set by the first feed amount setting unit and the correction feed amount set by the feed amount correction setting unit, and The feed amount by the 2-servo motor 92 is the total feed amount of the feed amount set by the second feed amount setting unit and the corrected feed amount set by the feed amount correction setting unit. Then, the sealing and the cutting are controlled to be performed at the same position with the two rows of bag-making materials M stopped at the same time.

Switch 141 and three LED indicators 142, 143
Reference numeral 144 constitutes a motor selection unit at the time of manual operation, and the feed 1 servo motor 91, the feed 2 servo motor 92, or both are set and operated when selected.

The temperature adjusting unit 151 is provided with adjusting units 152 and 153 for adjusting the temperature of the upper and lower portions of the seal bar 8 in the sealing device, and heater power-on switches 154 and 155. The operation panel 1
A buzzer 156 is provided at 00 for an alarm.

It should be noted that, with regard to the other devices of the operation panel 100, description of those not directly related to the present invention and those of which functions are easily apparent from the drawings will be omitted.

FIG. 3 is a control block diagram of the control device of the automatic bag making machine 1 according to the present invention.

The automatic bag making machine 1 is bag-controlled by a controller 200 equipped with a microcomputer. The controller 200 is electrically connected to the operation instrument attached to the operation panel 100 and the display instrument. Further, the feed 1 servo motor 91 and the feed servo motor 9
2, and a servo motor driver 201 that outputs drive power to each of the seal cutting servo motors 93,
202 and 203 are connected, and further feed 1 servo motor 9
Encoders 204, 205, and 206 that output signals corresponding to the respective rotation speeds of the first, second feed servo motor 92, and seal cut servo motor 93 are connected to the controller 200.

Further, as sensors relating to the control of the present invention, the material detection sensors 207 and 208 that detect the bag-making material M in each of the two rows and output the detection signals, and the marks printed on the bag-making material M in each of the two rows or Mark detection sensors 209 and 210 that detect a pattern and output the detection signal
And a sealing device upper end sensor 211 that detects that the sealing device is located at the upper end and outputs the detection signal, and a cutter device upper end cutter 212 that detects that the sealing device is located at the upper end and outputs the detection signal. Are used, and the respective sensors are electrically connected to the controller 200.

On the other hand, the controller 2 controls the seal device clutch 214, the cutter device clutch 215, and the seal device brake 17 and the cutter device brake 16 so that they are activated by signals output from the controller 200.
00 electrically connected. The sealing device clutch 214 and the brake 17, and the cutter device clutch 2
When the clutch signal is output from the controller 200, the servo motor 93 for seal cutting and the brake motor 15 and the brake 16 are provided.
While the seal device and the cutter device are connected to each other, when the clutch signal is cut off, the above respective connections are released and the brake is applied.

The control device of the automatic bag making machine 1 configured as described above includes a four-digit display device 101 of the operation panel 100, and four switches 102, 103, 104, 10 provided for each digit.
The length of the bag manufactured from the bag-making material M in the first row is set in the first feed setting section consisting of 5 and the four-digit indicator 106 and four digits provided for each digit are set. The length of the bag manufactured from the second row of bag-manufacturing material M is set in the second feed setting section including the switches 107, 108, 109 and 110, and the two-digit display unit 111 and each of them are set as necessary. When the feed correction amount is set by the feed amount correction setting unit including the two switches 112 and 113 provided for each digit,
The microcomputer built in the controller 200 calculates the feed speed of each of the feed 1 servo motor 91 and the feed 2 servo motor 92 according to the set bag making length. Then, when the fourth pattern is selected in the bag making pattern selection unit, the microcomputer outputs drive signals for driving the feed 1 servo motor 91 and the feed 2 servo motor 92 based on the calculated feed speed. Is output to the servo motor driver 201 and the servo motor driver 202. As a result, the servo motor driver 201 drives the feed 1 servo motor 91 so that the first bag-making material is intermittently moved by the bag-making length set by the first feed setting unit, and the servo motor driver 202 Drives the feed-2 servomotor 92 so that the second bag-making material is intermittently moved by the bag-making length set by the second feed setting section.

By the above feed control, even if the bags manufactured from the bag-making materials M in the first row and the second row have different lengths, the bag-making materials M in both rows can be sealed by the sealing device. Both of them are in a stopped state, and even when they are cut by the cutter device, the bag-making materials M in both rows are both in a stopped state.

In this way, the controller of the automatic bag making machine 1
Even if the bag making lengths in the row and the second row are different, bags having different lengths can be produced.

(Effects of the Invention) As described above, according to the present invention, a set of sealing devices that seal the bag-making material in each row in the process of transferring the bag-making material in parallel in a plurality of rows, and each after the sealing is completed. And a set of cutter devices for cutting the bag-making material in a row, and the set of seal devices and the set of cutter devices are driven by the same seal cutting servo motor, and the seal cutting servo motor is also used. In a bottom-seal type double-row automatic bag-making machine configured to intermittently transfer the bag-making material in each row in parallel by a plurality of transfer servomotors provided separately from each other, Bag-making dimension setting means for setting the length of the bag manufactured from each bag-making material for each material, and manufacturing of each row according to the bag-making length of each row set by the bag-making dimension setting means. During the process of intermittent transfer of bag material, the bag material of each row Feed speed calculating means for calculating the feed speed of each of the plurality of transfer servo motors so that the materials stop substantially at the same time, and the transfer based on the feed speed of each of the transfer servo motors calculated by the feed speed calculating means. And a drive control means for rotating and driving the servo motor and driving the seal-cutting servo motor in a state in which the bag-making materials in the respective rows are stopped substantially at the same time to seal and cut the bag-making materials in the respective rows. Since the control means is provided, it becomes possible to automatically produce bags of various lengths,
This has the effect of being able to meet a wide range of bag making requests from customers.

[Brief description of drawings]

FIG. 1 is a front view of the automatic bag-making machine, FIG. 2 is a device layout view of an operation panel, and FIG. 3 is a block diagram of a control device of the automatic bag-making machine. 1: Automatic bag making machine 91: Feed 1 servo motor 92: Feed 2 servo motor 100: Operation panel 101: First feed amount display 102-105: First feed amount setting switch 106: Second feed amount display Units 107 to 110: Second feed amount setting switch 136: Pattern setting switch 137 to 140: Pattern setting indicator 200: Controller 201: Servo motor driver 202: Servo motor driver

Claims (1)

[Claims] 1. A set of sealing devices for sealing the bag-making material in each row in the process of transferring the bag-making material in parallel in a plurality of rows, and a set for cutting the bag-making material in each row after the sealing is completed. And a plurality of transfer servos provided separately from the seal cutting servo motor, while driving the one set of sealing device and the one set of cutter device by the same seal cutting servo motor. In a bottom-seal type double-row automatic bag-making machine configured to intermittently transfer the bag-making materials in each row in parallel by each motor, each bag-making material in each row is manufactured from each bag-making material. In the process of intermittently transferring the bag-making material of each row according to the bag-making length setting means for setting the length of the bag and the bag-making length of each row set by the bag-making dimension setting means, Before the bag-making materials in each row stop almost simultaneously Feed speed calculation means for calculating the feed speed of each of the plurality of transfer servo motors, and the transfer servo motors are rotationally driven based on the feed speeds of the respective transfer servo motors calculated by the feed speed calculation means. Drive the seal cut servomotor in a state where the bag-making materials in each row are stopped almost at the same time,
A control device for a double-row automatic bag-making machine, comprising: drive control means for sealing and cutting the bag-making material in each row.