JP2003341632A - Horizontal bag making and filling machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure safety of a processing operation after emergency stop. <P>SOLUTION: In a horizontal bag making and filling machine 10, two lines of packaging parts 11 and 12 provided with film supporting means 20A and 20B, feeding conveyors 17A and 17B, bag making instruments 23A and 23B, film feeding rollers 24A and 24B, center seal mechanisms 26A and 26B and end seal mechanisms 27A and 27B, are arranged in parallel in the intersecting direction to the article transferring direction to a common frame 13. Control devices for controlling control objective means respectively provided on various actuating mechanisms constituting each of the packaging parts 11 and 12 are arranged on each of the packaging parts 11 and 12. Emergency stop switches are respectively connected with each of the control devices. By pushing one of the emergency stop switches corresponding to the packaging parts 11 and 12 to be urgently stopped, working parts of both packaging parts 11 and 12 are urgently stopped, and there exists no possibility of bringing an operator into contact with the working parts by mistake when the processing operation is performed after the emergency stop. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal bag making and filling machine provided with a plurality of packaging sections in parallel. 2. Description of the Related Art In a horizontal bag making and filling machine, a belt-like film drawn from a raw film roll is formed into a tubular shape by bag making means, and articles are fed into the obtained tubular film via a supply conveyor. Along with the sequential supply, the center seal mechanism applies a vertical seal to the overlapping surface of the longitudinal edge of the tubular film enclosing this article, and the horizontal seal is applied by the end seal mechanism before and after sandwiching the tubular film article. The so-called pillow package is continuously manufactured by performing horizontal sealing and cutting in each direction. [0003] By the way, there is a demand to improve productivity in order to reduce production costs in packaging work and others.
The horizontal type bag making and filling machine is required to perform processing in a minimum production time for speeding up of packaging, handling of various types, and the like. However, there is a limit to increasing the packaging speed in a horizontal bag making and filling machine, and it is not possible to increase the productivity by randomly packaging articles of different varieties due to structural problems. Therefore, conventionally, a plurality of horizontal bag making and filling machines have been installed to cope with the problem. However, when a plurality of horizontal bag making and filling machines are installed, a problem that a large installation area is required is pointed out. In the horizontal bag making and filling machine, the setting is changed according to the size of the product and the film to be used as the packaging type is changed. When performing, the operation of the packaging machine is temporarily suspended to change the film according to the type, set work,
It is necessary to automatically or manually change the setting values of various operating mechanisms according to the size of the article, etc.,
It was not possible to package multiple types of articles simultaneously. In order to cope with this, one horizontal bag making and filling machine is provided with a packaging section having a film supply means, a bag making means, an article supply means, a center seal means and an end seal means, intersecting the article transfer direction. A plurality of, for example, two rows are arranged in parallel in the same direction. [0006] As described above, in a horizontal bag making and filling machine in which a plurality of packaging parts are arranged, a start switch for starting a packaging operation is provided for each packaging part. An emergency stop switch for urgently stopping the packaging operation when any abnormality occurs in the packaging unit is provided. In the above-described configuration, if an abnormality occurs in one of the packaging sections and the package is stopped immediately, if another packaging section is continuing the packaging operation, the inspection or repair of the emergency stopped packaging section is performed. However, there is a problem that the safety when performing the processing cannot be ensured. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems inherent in the prior art, and has been proposed in order to solve the problem suitably. It is an object of the present invention to provide a horizontal bag making and filling machine capable of ensuring the properties. [0009] In order to overcome the above-mentioned problems and achieve the intended object, a horizontal bag making and filling machine according to the present invention forms a belt-like film drawn from a supply source into a cylindrical shape. And
An article is supplied to the tubular film at predetermined intervals, and a longitudinal seal is applied to the longitudinally overlapping end portion of the tubular film. In a horizontal bag making and filling machine in which a plurality of packaging units for cutting are provided in parallel in a direction intersecting with the article transfer direction, a control for controlling a control target means provided in each of various operating mechanisms constituting the packaging unit. A device is provided, and a start switch and an emergency stop switch for starting and emergency-stopping the packaging unit are individually connected to each packaging unit in the control device, and are provided corresponding to the packaging unit requiring an emergency stop. The control device is characterized in that the control device is set to stop the operation of the control target means in operation in all of the packaging units in response to the operation of the emergency stop switch. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a horizontal bag making and filling machine according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments. A horizontal bag making and filling machine 10 shown in FIG. 1 is provided with various operation mechanisms such as a film supply mechanism, an article supply mechanism, a film transfer mechanism, a center seal mechanism and an end seal mechanism, and a bag making means, and is provided with a pillow package. 2 which can be manufactured individually
The rows of wrapping parts 11 and 12 are arranged side by side with respect to the common frame 13 in a direction intersecting the article transfer direction. Since the configurations of the two packaging units 11 and 12 are basically the same, the configuration of the first packaging unit 11 disposed on the front side of the horizontal bag making and filling machine 10 where the operator performs a driving operation. And the same reference numerals are given to the same corresponding members in the back side second packaging portion 12. However, “A” is added to the reference numeral indicating each component of the first packaging unit 11 on the front side, and “B” is added after the reference numeral of the same component of the second packaging unit 12 on the back side. To distinguish them. The first wrapping part 11 includes an endless chain 14.
A is a supply conveyor 1 serving as an article supply mechanism for feeding articles W to a tubular film 16a (described later) at regular intervals by a large number of attachments 15A attached at predetermined intervals.
7A. The supply conveyor 17A is provided with a first control device 18A provided corresponding to the first packaging unit 11.
Is driven by the first motor M1A whose rotation is controlled by the motor. Above the supply conveyor 17A, an original film roll in which a belt-like film 16 is wound with a required diameter.
(Supply source) film supporting means 2 for detachably supporting 19
OA is rotatably disposed at two places separated in the article transfer direction, and the belt-shaped film 16 pulled out from the film roll 19 supported by each film supporting means 20A is:
As shown in FIG. 2, the sheet is guided to a bag making device 23A described later via a plurality of rollers 22A. In the film supply mechanism including the film supporting means 20A and the plurality of rollers 22A, a pair of feeding rollers (operation mechanisms) 22aA, 22aA driven by a second motor M2A controlled to rotate by the first controller 18A. The belt-like film 16 is drawn from the film roll 19 by rotation. The film supporting means 20
A, a splicer for connecting the terminal end of the film 16 to the leading end of the band-like film 16 which is supported by the film supporting means 20A and is on the transfer path of the band-like film 16 from the bag-making device 23A to the bag making device 23A. 21A is provided. As shown in FIG. 2, the belt-like film 16 drawn from the film roll 16 is formed as a bag-making means disposed downstream of the supply conveyor 17A through a plurality of rollers 22A and 22aA. The tubular film 16a guided to the bag device 23A and formed into a tubular shape by the bag making device 23A is squeezed by a pair of film feed rollers 24A and 24A opposed to each other at the overlapping end in the longitudinal direction,
The feed rollers 24A, 24A are rotated so as to provide a required feed. On the downstream side of the film feed roller 24A constituting the film transfer mechanism,
A center seal mechanism 26A including a pair of vertical seal rollers 25A, 25A and the like facing each other across the overlapping edge of the cylindrical film 16a is provided, and the mechanism 26A vertically extends the overlapping edge of the cylindrical film 16a. A seal is provided. In addition, both vertical seal rollers 25A, 25A
Each has a built-in vertical seal heater H1A whose temperature is controlled by the first control device 18A.
1A is configured so that the corresponding vertical seal roller 25A is heated to a predetermined temperature. The film feed roller 24
A and the vertical seal roller 25A are connected to the first controller 18
A is rotationally driven by a third motor M3A whose rotation is controlled by A. An end seal mechanism 27A for horizontally sealing and cutting the cylindrical film 16a is provided downstream of the center seal mechanism 26A. The end seal mechanism 27A includes a pair of horizontal sealers 28A, 28A that rotate unequally by a fourth motor M4A, the rotation of which is controlled by the first controller 18A. I have. Each of the horizontal sealers 28A, 28A has a built-in horizontal seal heater H2A whose temperature is controlled by the first control device 18A, and is configured so that the corresponding horizontal sealer 28A is heated to a predetermined temperature by each heater H2A. You. Then, while the horizontal sealers 28A, 28A make one rotation synchronously, the cylindrical film 16a is transported by one cut pitch, so that the horizontal sealing and cutting are performed before and after the article W of the cylindrical film 16a is sandwiched. It has become so. Downstream of the end seal mechanism 27A,
A package discharge mechanism (operation mechanism) that is rotationally driven by a fifth motor M5A that is rotationally controlled by the first controller 18A.
A discharge conveyor 29A including a belt conveyor is disposed, and the package that has been subjected to the lateral sealing and cutting is carried out by the discharge conveyor 29A. The first packaging section 11 having the above-described mechanisms.
And the second wrapping part 12, as shown in FIGS. 1 and 4,
The film supporting means 20A, 20B, the bag making device 23A, 2
3B, film feed rollers 24A, 24B, center seal mechanisms 26A, 26B and end seal mechanisms 27A,
27B are arranged in a positional relationship shifted in the article transfer direction. In the embodiment, each mechanism constituting the first packaging unit 11 is set so as to be shifted upstream in the article transfer direction with respect to each corresponding mechanism of the second packaging unit 12. However,
The upstream ends of the supply conveyors 17A and 17B and the downstream ends of the discharge conveyors 29A and 29B are set to coincide. As shown in FIG. 5, the first and second control devices 18A and 18B provided corresponding to the first and second packaging portions 11 and 12 have power plugs as connection means for an external power source. Cables 30A and 30B are individually provided, and plugs PuA,
It is configured such that PuB can be individually connected to an outlet or the like at the installation location of the packaging machine. And each cable 3
0A, 30B, the power supplied from each controller 18A,
The power is supplied separately to the respective operating mechanisms of the corresponding packaging parts 11 and 12 via power supply breakers (not shown) provided in the respective 18B. That is, each of the mechanisms 17A, 22aA, 24A, 26A,
Motors M1A, M2A, M3A for driving 27A, 29A,
Power is supplied from a corresponding first control device 18A to control target means such as M4A and M5A and heaters HIA and H2A.
Motors M1B, M2B, M3B, M4B, M5B for driving 2aB, 24B, 26B, 27B, 29B and heater HIB,
The control target means such as H2B is supplied with electric power from the corresponding second control device 18B, so that each of the packaging units 11 and 12 can be independently driven and controlled. is there. As shown in FIGS. 1 and 2, the frame 13 facing the front side of the first packaging portion 11 located on the near side has an upstream end in the article transfer direction with the end sealing mechanism 27A of the packaging portion 11 interposed therebetween. The switch box 31A corresponding to the first packaging part 11 is disposed on the side, and the second
A switch box 31B corresponding to the packaging unit 12 is disposed. And each switch box 31A, 31
B includes start switches SW1A, SW1B and cycle stop switches SW2A, SW2B, each of which is a push button switch for individually starting and cycle-stopping the corresponding packaging unit 11, 12, and a push button for urgently stopping the packaging units 11, 12. Emergency stop switch SW3
A, SW3B are provided, and these switches are
Each control device 18 described above corresponding to each of the packaging units 11 and 12
A, 18B. In the control devices 18A and 18B, the corresponding start switches SW1A and SW1B of the packaging portions 11 and 12 are provided.
By pressing, a drive signal (signal for a motor) to the above-mentioned controlled object means of each of the packaging units 11 and 12 is output from the control devices 18A and 18B, and electric power is supplied. 12 are configured to independently initiate a wrapping operation. By pressing the corresponding cycle stop switches SW2A and SW2B of the packaging units 11 and 12, the drive signals from the control devices 18A and 18B to the control target means of the respective packaging units 11 and 12 are cut off. Numerals 11 and 12 independently stop the packaging operation at a cycle stop timing set in advance for each control target means. Further, in each of the control devices 18A and 18B, after the operation of each of the packaging units 11 and 12, the packaging units 11 and 12 are started.
When any one of the emergency stop switches SW3A and SW3B corresponding to the packaging units 11 and 12 to be urgently stopped due to other factors is pressed when any one of the units malfunctions, the control devices 18A and 18B Are the respective packaging units 11,1
2, a drive signal to a control target means for causing the various operating mechanisms to perform operations involving movements such as rotation and running is cut off. That is, when a malfunction occurs in the first packaging unit 11, the emergency stop switch SW3A
, And when the emergency stop switch SW3B is pressed when the second packaging unit 12 malfunctions, the first motors M1A and M1B, the second motor M2A, M2B, the third motors M3A and M3B, the fourth motors M4A and M4B, and the fifth motors M5A and M5B are stopped, and the supply conveyors 17A and 17B, the feeding rollers 22aA and 22aB, the film feeding rollers 24A,
24B, center seal mechanisms 26A and 26B, end seal mechanisms 27A and 27B, and discharge conveyors 29A and 29
All the operating mechanisms of B are set to be in the operation stop state. Further, in the method of the embodiment, even when the emergency stop switches SW3A and SW3B corresponding to the packaging units 11 and 12 different from the packaging units 11 and 12 that require an emergency stop are pressed, the control devices 18A and 18B are used. Is configured to stop the operation of each of the mechanisms of the two packaging units 11 and 12. Furthermore, even if the packaging units 11 and 12 different from the packaging units 11 and 12 to be stopped are in the stopped state or the state where the power supply is shut off, the packaging units 11 and 12 are in the stopped state and the like. Emergency stop switch SW corresponding to
By pressing 3A, SW3B, the controller 18A, 18B
Is set so that the operation of each of the mechanisms of the wrapping units 11 and 12 in operation is stopped. By the way, the emergency stop switch SW of the embodiment
As shown in FIG. 5, the contacts 3A and SW3B are individually provided with contacts for the first and second packaging portions 11 and 12, and each contact is opened by pressing one of the emergency stop switches SW3A and SW3B. Thus, a method of interrupting a drive signal for a control target means is adopted. In addition, heaters H1A, H1B for vertical sealing which heat the vertical seal rollers 25A, 25B of the center seal mechanisms 26A, 26B, and heaters H2A, H2B for horizontal seals which heat the horizontal sealers 28A, 28B of the end seal mechanisms 27A, 27B. Are turned on and off by turning on and off the power breakers of the control devices 18A and 18B. If the power breakers are in the ON state, the control devices 18A and 18B can operate from the control devices 18A and 18B regardless of the operation of the switches. The heating is controlled to be maintained at a predetermined temperature by the output temperature control signal. The emergency stop switch SW3A, S
Another emergency stop switch with the same function as W3B,
Each of the supply conveyors 17A and 17B is disposed on the upstream end side. In addition, the discharge conveyor 29A, from the upper and end seal mechanisms 27A, 27B in the transfer path of the cylindrical film formed by the bag making devices 23A, 23B.
The end portion of 29B is covered with a safety cover for preventing an operator from inadvertently touching the operation portion during the packaging operation. It is possible to function as a stop switch. In other words, the position and number of emergency stop switches for urgently stopping all the wrapping parts 11 and 12 may be set as many as necessary and deemed necessary. A scheme may be employed. Next, the operation of the horizontal bag making and filling machine according to the embodiment will be described. Each of the start switches SW1A, S
By pressing W1B, a drive signal is output from each of the control devices 18A and 18B to each of the control target units of the corresponding packaging units 11 and 12, and each of the control target units is synchronously driven.
The operation of the horizontal bag making and filling machine 10 is started. When the cycle stop switches SW2A and SW2B corresponding to the packaging units 11 and 12 are pressed, the corresponding first or second packaging units 11 and 12 cause the respective operating mechanisms to operate at a preset cycle stop timing. Stop the packaging operation. In other words, while one of the packaging units 11, 12 is in operation, the other packaging unit 12, 11 is stopped, and the operation of changing the setting of each operating mechanism according to the change of the packaging type can be performed. It is possible to suppress a decrease in productivity due to a change in variety. In the horizontal bag making and filling machine 10, when a packaging failure or the like occurs in one of the first and second packaging sections 11 and 12, and the packaging operation needs to be stopped urgently,
Press the corresponding emergency stop switch SW3A, SW3B. As described above, one emergency stop switch SW3
By pressing A, SW3B, each of the first and second control devices 18A, 18B is configured to cut off the drive signal to the control target means of the corresponding mechanism. Both of the packaging operations of the packaging units 11 and 12 are urgently stopped. In other words, all operating mechanisms are stopped, so inspection and
It is possible to prevent the operator from accidentally touching the operation unit during the processing operation such as repair, and to ensure the safety of the worker.
In the embodiment, even when the emergency stop switches SW3A and SW3B corresponding to the packaging units 11 and 12 different from the packaging units 11 and 12 requiring an emergency stop are pressed, both the packaging units 11 and 12 are pressed.
Can be emergency stopped, the operator does not need to select a switch to be pressed, and can quickly perform an emergency stop. The first and second wrapping parts 11 and 12 can also be formed by another emergency stop switch provided at the upstream end of the supply conveyors 17A and 17B or a sensor operated by opening the safety cover. An emergency stop can be performed, and the safety of workers can be ensured. [Modification] The present application is not limited to the configuration of the above-described embodiment, and other configurations can be appropriately adopted. For example, the wrapping parts 11 and 12 are not limited to two rows, and may be three or more rows, and one of the emergency stop switches SW3A and SW3B provided for each wrapping part is pressed. It suffices that the operating mechanism that accompanies the operation of all of the packaging units 11 and 12 is set to be in the stopped state. Further, the film supply mechanisms 20A, 20B, 22A, 22B, 22aA, 22
aB, article supply mechanisms 17A and 17B, film transfer mechanisms 24A and 24B, center seal mechanisms 26A and 26B, and end seal mechanisms 27A and 27B.
The configuration is not limited to the configuration of the embodiment, and various types can be adopted. Note that the start switches SW1A, SW1
B, the cycle stop switches SW2A and SW2B and the emergency stop switches SW3A and SW3B are not limited to the push button switches, and for example, switches operated by touching corresponding portions of the touch panel or other types can be adopted. Instead of individually arranging the control devices 18A and 18B for each wrapping portion, the first wrapping portion 11 and the second wrapping portion 12 can be controlled by one control device. ,
Other control systems can be employed as appropriate. The emergency stop switches SW3A and SW3B are replaced with packaging units 11 and 12 instead of providing individual contacts for the packaging units 11 and 12, respectively.
Emergency stop switch SW3 with one contact corresponding to
A, SW3B, and when one of the emergency stop switches SW3A, SW3B is operated, each of the packaging parts 11, 12
Various other control methods can be adopted, such as one that performs software processing in each control device so as to cut off the drive signal to the control target means. Emergency stop switch SW3A, SW3B
Does not stop all of the control target means when the user operates the device, but the mechanism disposed at a location hidden inside the machine and need not be stopped for safety of work, and the discharge conveyor 2
The control target means corresponding to 9A and 29B may be exempt from emergency stop. As described above, according to the horizontal bag making and filling machine of the present invention, when any one of the plurality of packaging parts is in an improper packaging state or when an emergency stop is required due to other factors, By operating the corresponding emergency stop switch, all operating parts of the packaging unit are stopped.
The safety of post-processing operations can be ensured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view showing a horizontal bag making and filling machine according to an embodiment of the present invention, with a part thereof being omitted. FIG. 2 is a schematic front view showing a horizontal bag making and filling machine according to an embodiment. FIG. 3 is a schematic plan view showing a horizontal bag making and filling machine according to an embodiment. FIG. 4 is a schematic perspective view showing a mechanism constituting each packaging unit of the horizontal bag making and filling machine according to the embodiment. FIG. 5 is a control block diagram of the horizontal bag making and filling machine according to the embodiment. DESCRIPTION OF SYMBOLS 11 First wrapping unit 12 Second wrapping unit 16 Strip film 16a Tubular films 17A, B Supply conveyor (operation mechanism) 18A First control unit 18B Second control unit 19 Film roll (Supply source) 22aA, B Feeding roller (operation mechanism) 24A, B Film feed roller (operation mechanism) 26A, B Center seal mechanism (operation mechanism) 27A, B End-seal mechanism (operation mechanism) SW1A, B Start switch SW3A, B Emergency stop switch M1A, B 1st motor (control target unit) M2A, B 2nd motor (control target unit) M3A, B 3rd motor (control target unit) M4A, B 4th motor (control target unit) W Article

   ────────────────────────────────────────────────── ─── Continuation of front page    F term (reference) 3E050 AA02 AB02 AB08 BA06 CA01                       CB09 DC02 DD04 DF02 FA02                       FB02 FB07 GB05 HA03 HB10

Claims (1)

Claims: 1. A strip film (1) drawn from a supply source (19).
6) is formed into a tubular shape, the article (W) is supplied to the tubular film (16a) at predetermined intervals, and a longitudinal seal is provided on the longitudinally overlapping end portion of the tubular film (16a). And a packaging section (11, 12) for sealing and cutting in the lateral direction before and after sandwiching the article (W) of the tubular film (16a), a plurality of packaging sections are provided in parallel in a direction intersecting the article transport direction. In the bag making and filling machine, various operating mechanisms (17A, 17B, 22) constituting the packaging sections (11, 12) are provided.
aA, 22aB, 24A, 24B, 26A, 26B, 27A, 27B), a control device (18A) that controls the control target means (M1A, M1B, M2A, M2B, M3A, M3B, M4A, M4B). , 18B), and the control device (18A, 18B) includes a start switch (SW1A, SW1B) and an emergency stop switch (SW3A, SW3B) for starting and urgently stopping the packaging units (11, 12). With the operation of the emergency stop switches (SW3A, SW3B) that are individually connected to each packaging section and that are arranged corresponding to the packaging sections (11, 12) that require an emergency stop, all of the control devices (18A, 18B) Horizontal bag making characterized in that it is set to stop the operation of the controlled means (M1A, M1B, M2A, M2B, M3A, M3B, M4A, M4B) in operation in the packaging parts (11, 12) Filling machine.