JPH0635169B2 - Automatic bag making machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bottom-seal type bag making apparatus, and more specifically, it seals and cuts bag making materials based on respective preset patterns. Accordingly, the present invention relates to an automatic bag making apparatus that manufactures bags having various sizes and shapes.

(Prior Art) Conventionally, as a bottom seal type bag making apparatus, for example, there is one described in Japanese Utility Model Laid-Open No. 2-25622. The automatic bag-making device described in this publication has a sealer that seals the bag-making material that is intermittently transferred, and a cutter that cuts the bag-making material after sealing is completed, 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 transfer servo motor provided separately from the seal cutting servo motor.

(Problems to be Solved by the Invention) The above-described conventional automatic bag making apparatus is configured to be able to continuously manufacture bags of the same size, but to manufacture bags of various sizes and forms. No setting means and control means are disclosed.

However, recently, with various dimensions, single seals,
Alternatively, there is a tendency that the demand for manufacturing various types of bags having different forms such as double seals is high.

Therefore, it is a technical problem to be solved in the present invention that the same automatic bag-making apparatus can automatically manufacture bags of various sizes and shapes.

(Means for Solving the Problem) The technical means for solving the above problem includes a sealing device that seals the bag-making material and a cutter device that cuts the bag-making material after the sealing is completed. While driving the device with the same seal cutting servo motor,
An automatic bag making apparatus configured to intermittently transfer bag making material by a transfer servo motor provided separately from the seal cutting servo motor, and a bag making apparatus for setting a plurality of bag making patterns of the bag making material. A pattern selection means, a first feed amount setting unit for setting a first feed amount of the bag-making material,
A second feed amount setting section for setting a second feed amount of the bag making material, a first bag making pattern is selected by the bag making pattern selecting means, and the first feed amount setting section is for the first bag making pattern. When the feed amount of the bag-making material is set, continuous bag-making control is performed in the process sequence of "feed at the first feed amount" and then "sealing and cutting", while the bag-making pattern selection means is used. A second bag-making pattern is selected, a first feed amount of the bag-making material is set by the first feed amount setting unit, and a first feed amount of the bag-making material is set by the second feed amount setting unit. When a feed amount of 2 is set, a single seal is continuously processed in the order of "feed at the first feed amount", "sealing", "feed at the second feed amount", and "cutting". Bag-making control is performed, and the bag-making pattern selection means is used to make a third
Bag making pattern is selected, the first feed amount setting unit sets the first feed amount of the bag making material, and the second feed amount setting unit sets the second feed amount of the bag making material. When the feed amount is set, "Feed at the first feed amount",
It is configured to include a control means for continuously controlling the bag making of the tabular seal in the order of the steps of "sealing", "feeding at the second feed amount", and "sealing and cutting".

(Operation) According to the automatic bag making apparatus having the above configuration, the control means selects the first bag making pattern by the bag making pattern selecting means, and sets the feed amount of the bag making material by the first feed amount setting unit. When set, the continuous bag-making control is performed in the process sequence of "feed at the first feed amount", and then "sealing and cutting", while the second bag-making pattern is selected by the bag-making pattern selection means. Is
In addition, the first feed amount setting unit sets the first feed amount of the bag-making material, and the second feed amount setting unit sets the second amount of the bag-making material.
When the feed amount of is set, "feed at the first feed amount", "sealing", "feed at the second feed amount,",
Then, continuous bag-making control of a single seal is performed in the order of the steps of "cutting", the third bag-making pattern is selected by the bag-making pattern selection means, and the first bag-making material is selected by the first feed amount setting unit. Is set and the second feed amount of the bag-making material is set by the second feed amount setting unit, the “feed at the first feed amount”, the “sealing”, and the “first feed amount” are set. Double-seal continuous bag-making control is performed in the order of the steps of "feed with 2 feed amount" and "sealing and cutting".

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

FIG. 1 is an automatic bag-making device for manufacturing a bottom-sealed bag body by sealing and cutting a double-sheet-shaped bag-making material M in which a long tubular synthetic resin film is flatly folded and sealed at predetermined intervals. It is a front view of 1.

As shown in FIG. 1, in the upper end of the frame 32, two rows pass in parallel, or a passage 33 through which one row of the bag-making material M passes is formed from the rear end to the front end of the frame 32. The material M is tensioned by a pair of left and right feeding mechanisms (not shown) and fed into the passage 33.
The bag-making material M fed into the passage 33 advances in sliding 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 vertically upward and forward of the conveyor 9. 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 having a built-in microcomputer for controlling various operations of the entire automatic bag making apparatus 1 is installed near the frame 32. The controller 200 has three servo motor drivers 201, 202, 203.
Are connected.

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

A feed 1 servo motor 91 and a feed 2 servo motor 92, which can be speed-changed by a command signal of the control 200, are arranged side by side in the front and rear of the frame 32 so as to be spaced apart from each other.
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.
The shift control is performed according to the shift command signal output from the controller 200 on the basis of the output signal of 05, and the rotation is intermittently driven.

Above the motors 91 and 92, the first feed roll drive shaft 13 and the second field roll drive shaft 14 are provided in the passage 3
Along the width direction of 3 is horizontally rotatably installed in parallel.

At the upper end of the front part of the frame 32, a pair of upper and lower first feed rolls 6, 6 are rotatably provided above the second feed roll drive shaft 14 and have a length of about 1/2 of the passage width. A pair of upper and lower feeding rolls 25, 25 horizontally rotatably mounted in front of both the first feed rolls 6, and a plurality of pairs of spring belts 26, 26 wound around the first feed roll 6 and the feeding roll 25. First feed mechanism 3 having
6 is installed to intermittently feed the first bag-making material M, and the second feeding device 36 having a similar configuration is provided on the side of the first feeding mechanism 36.
A feeding mechanism is provided.

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 feed mechanism 36 is driven, and similarly, the output rotation of the motor 92 drives the second feed 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 clutch speed reducer 4 having a clutch 215 attached to both sides thereof, and the rotation of the connecting shaft 41 is transmitted to both speed reducers 4 and 5 via a pulley and a belt.

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 mechanism will be described. A pair of front and rear cam shafts 42, which are rotatably mounted horizontally 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 inserted, are formed at the front and rear ends of both the elevating plates 43, and the rod-shaped guides are provided on the upper outer surfaces of the elevating plates 43. The rail 43b is horizontally attached, and the rotation of the sealing drive shaft 15 causes the both lift plates 43 to repeatedly move up and down synchronously, thereby repeatedly moving the sealing mechanism 23, which will be described in detail later, 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 so as to project from the left and right end portions of the shaft 5, and both shafts are non-rotatably pressed, and the seal bar holder 55 is moved up and down as the lifting plates 43 are repeatedly moved up and down.

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 bottom dead center and again rising 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 that is directly connected to the output shaft of the cutter reducer 4 and is rotationally driven when the clutch 215 is excited.

The blade cam 11 is linked to a lower piece 12a of a pair of left and right rocking levers 12 which are pivotally supported in front of a blade drive shaft 29 so as to be interlockable via a connecting rod 63. .

A fixed blade 62 is installed at the front end on the frame 32 and slightly in front of the both feeding mechanisms 36.
In order to cut the bag-making material M at predetermined intervals in cooperation with the fixed blade 62, a movable blade 7 opposed to the fixed blade 62 is installed to be movable up and down at the front end of the movable blade 7. The upper end of a connecting rod 64 connected to the front piece 12b of the double swing lever 12 is connected to the end portion, and the movable blade 7 is synchronized with the vertical movement of the seal bar 8 every time the blade cam 11 is rotated. Ascending and descending, the bag-making material M is cut.

Next, the operation and control of the automatic bag making apparatus 1 will be described.

FIG. 2 shows an operation panel 100 used in the automatic bag making apparatus 1.
FIG.

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 2 ) Used as.

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 sealing is completed, 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 each of 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 setting unit for performing automatic control or manual control of the automatic bag making apparatus, switching between manual modes, and displaying each mode.

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 first row feed roller of the automatic bag-making apparatus 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, LE
When the D 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 feed roller to the second row. Furthermore, the LED display 135
When is turned on, the bag-making material M has a mark and is made from the two rows of bag-making material M which are respectively transported by the first-row feed roller and the second-row feed roller. .

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, bags are made in a continuous process of “feeding → sealing and cutting → feeding ...”. The bag making process according to this first pattern is
In the state where the bag-making material M is fed with the total feed 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, and the bag-making material M is stopped. Sealing and cutting are performed at the same time, and are selected when continuously manufacturing relatively short 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, by setting the first feed amount setting unit to 5000 mm and setting the second feed amount setting unit to 2000 mm, 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 unit and the fourth pattern is selected, the feed servo motor 91 and the feed 2 servo motor 92 are separately driven, and two rows of bag making materials M are selected. This is a bag-making process when manufacturing bags having different lengths. 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 denotes a manually-held motor selection unit, which is set and operated when the feed 1 servo motor 91, the feed 2 servo motor 92, or both are 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 automatic bag making apparatus 1 according to the present invention.

The automatic bag making apparatus 1 is bag-making 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 servo motor driver 20 that outputs drive power to each of the feed 1 servo motor 91, the feed 2 servo motor 92, and the seal cutting servo motor 93.
1, 202 and 203 are connected, and encoders 204, 205 and 206 for outputting signals corresponding to the respective rotation speeds of the feed 1 servo motor 91, the feed 2 servo motor 92, and the seal cutting servo motor 93 are the controller 200. It is connected to the.

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 sensor 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 seal device clutch 214 and the brake 17, and the cutter device clutch 215 and the brake 16 are electrically connected to the controller 200 so as to be operated by signals output from the controller 200.

When the clutch signal is output from the controller 200, the seal device clutch 214 and the cutter device clutch 215 connect the seal cutting servomotor 93, the seal device, and the cutter device. On the other hand, when the clutch signal is cut off, the connection is released and the brake is applied.

In the control device of the automatic bag making apparatus 1 configured as described above, when the switch 136 of the bag making pattern selection unit of the operation panel 100 is operated, any of the first to fourth patterns is selected. Since the bag making pattern can be selected, bags of various sizes and shapes can be automatically manufactured.

(Effect of the Invention) As described above, according to the present invention, the control means selects the first bag making pattern by the bag making pattern selecting means, and
When the feed amount of the bag-making material is set in the feed amount setting section of, the continuous bag-making control is performed in the process sequence of "feed at the first feed amount" and then "sealing and cutting". The second bag making pattern is selected by the bag pattern selecting means,
In addition, the first feed amount setting unit sets the first feed amount of the bag-making material, and the second feed amount setting unit sets the second amount of the bag-making material.
When the feed amount of is set, the continuous production of single seal is performed in the order of "feed at the first feed amount", "sealing", "feed at the second feed amount", and "cutting". Bag control is performed, the third bag making pattern is further selected by the bag making pattern selecting means, and the first feeding amount of the bag making material is set by the first feeding amount setting unit and the second feeding amount is set. When the second feed amount of bag-making material is set in the setting section, "Feed at first feed amount", "Sealing", "Feed at second feed amount", and "Sealing" Since the double-sealing continuous bag-making control can be performed in the order of the "cutting" process, there is an effect that a single-sealing bag and a double-sealing bag with various sizes can be manufactured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an automatic bag making apparatus, FIG. 2 is a device layout view of an operation panel of the automatic bag making apparatus, and FIG. 3 is a control block diagram of the automatic bag making apparatus. 1: Automatic bag making apparatus 100: Operation panel 101: First feed amount display device 102-105: First feed amount setting switch 106: Second feed amount display device 107-110: Second feed amount setting switch 136: Pattern setting switch 137 to 140: Pattern setting display 200: Controller

Claims (1)

[Claims] 1. A seal device for sealing a bag-making material and a cutter device for cutting the bag-making material after completion of sealing, the seal device and the cutter device being driven by the same seal-cut servomotor, An automatic bag-making device configured to intermittently transfer bag-making material by a transfer servomotor provided separately from the seal-cutting servomotor, wherein a bag-making method for setting a plurality of bag-making patterns of the bag-making material. Pattern selecting means, a first feed amount setting unit for setting a first feed amount of the bag making material, a second feed amount setting unit for setting a second feed amount of the bag making material, and The first bag making pattern is selected by the bag making pattern selection means, and the first bag making pattern is selected.
When the feed amount of the bag-making material is set in the feed amount setting section of, while continuous bag-making control is performed in the process sequence of "feed at the first feed amount" and then "sealing and cutting",
A second bag making pattern is selected by the bag making pattern selecting means, a first feed amount of the bag making material is set by the first feed amount setting unit, and the second feed amount setting unit is set. When the second feed amount of the bag-making material is set in, the "feed with the first feed amount", "sealing", "feed with the second feed amount", and "cutting" Single-seal continuous bag-making control is performed in the process order, and the third bag-making pattern is further selected by the bag-making pattern selection means.
And when the first feed amount of the bag-making material is set by the first feed amount setting unit and the second feed amount of the bag-making material is set by the second feed amount setting unit. Is a control means for continuous bag-making control of the tabular seal in the order of the steps "feed at the first feed amount", "sealing", "feed at the second feed amount", and "sealing and cutting". An automatic bag making device characterized by being equipped with.