JP2016132454A - Bag-making and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a quantity of films to be disposed of in a bag-making and packaging machine.SOLUTION: A bag-making and packaging machine 100 includes a carrier mechanism 10, a roll holding part 20, a printing mechanism 30, a former 60, a vertical seal mechanism 70, a lateral seal mechanism 75, a cutting mechanism 80, a first sensor 91, and a second sensor 92. The printing mechanism 30 prints information in a film F. The former 60 superposes two vertical lines of the film F. The vertical seal mechanism 70 makes a film cylinder FT by fastening the two vertical lines. The lateral seal mechanism 75 makes a lateral seal portion by sandwiching and fastening the film cylinder FT. The cutting mechanism 80 cuts the film cylinder FT in the lateral seal portion. The first sensor 91 detects a mark of the film F in order to specify a cutting position to be cut of the film cylinder FT. The second sensor 92 detects a mark in order to specify a printing position in which prescribed information of the film F is printed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bag making and packaging machine.

  A bag making and packaging machine draws a film for packaging from a film roll, makes a bag with the film, and wraps an article with the bag. Marks are regularly printed on the film at regular intervals. The bag making and packaging machine detects the mark using a sensor, prints predetermined information such as the date of manufacture at an appropriate position on the film, and cuts the appropriate position on the bag-like film. To discharge individual packaged items.

  The bag making and packaging machine disclosed in Patent Document 1 (Japanese Patent No. 3971833) includes one mark detection sensor.

  In a factory that manufactures packaging articles, the operation of the bag making and packaging machine is temporarily stopped immediately before one roll of film roll is used up. Next, a new film roll is set in the bag making and packaging machine by the operator, and the end of the previous film and the front end of the film of the new roll are joined with an adhesive tape or the like. Thereafter, the operation of the bag making and packaging machine is resumed.

  Usually, since the positional relationship between the two films is not matched at the joint portion of the film, the interval between adjacent marks across the joint portion becomes inappropriate. For this reason, misalignment of printing or cutting may occur in the vicinity of the joint portion of the film. The range in which such misalignment occurs in the film may extend over the conveyance path between the two most distant ones of the cutting mechanism, the printing mechanism, and the mark detection sensor. Film portions having such misalignment must be discarded.

  An object of the present invention is to reduce the amount of film that must be discarded in a bag making and packaging machine.

  The bag making and packaging machine according to the first aspect of the present invention wraps an article with a bag made of a film on which marks are printed at regular intervals in the vertical direction. The interval is a dimension from the first side to the second side of the bag. The second side is the side opposite to the first side. The bag making and packaging machine includes a transport mechanism, a roll holding unit, a printing mechanism, a former, a vertical seal mechanism, a horizontal seal mechanism, a cutting mechanism, a first sensor, and a second sensor. The transport mechanism transports the film from upstream to downstream. The roll holding unit holds a film roll around which the film is wound. The printing mechanism is disposed downstream of the roll holding unit and prints predetermined information on the film. The former is disposed downstream of the printing mechanism and overlaps the two vertical sides of the film. The vertical sealing mechanism is arranged downstream of the former, and the two vertical sides overlapped are fixed to make a film cylinder. The horizontal seal mechanism is disposed downstream of the vertical seal mechanism, and forms a horizontal seal portion in the film cylinder extending in the horizontal direction by fixing two opposing portions of the film cylinder. The horizontal direction is perpendicular to the vertical direction. The cutting mechanism is disposed downstream of the vertical sealing mechanism, and cuts the film cylinder at the horizontal sealing portion. The first sensor detects the mark in order to specify the cutting position where the film tube is to be cut. The second sensor detects a mark in order to specify a printing position where predetermined information on the film is to be printed.

  According to this configuration, the bag making and packaging machine has the first sensor corresponding to the cutting mechanism and the second sensor corresponding to the printing mechanism. Therefore, since the printing mechanism and the cutting mechanism can each operate at the optimum timing, the amount of film that must be discarded can be reduced.

  The bag making and packaging machine according to the second aspect of the present invention is the bag making and packaging machine according to the first aspect, wherein the second sensor is arranged upstream of the printing mechanism.

  According to this configuration, the printing mechanism can use the detection signal of the second sensor arranged upstream of the printing mechanism itself, and thus can operate at an appropriate timing.

  In the bag making and packaging machine according to the third aspect of the present invention, in the bag making and packaging machine according to the first or second aspect, the first sensor is disposed downstream of the vertical sealing mechanism and upstream of the cutting mechanism.

  According to this configuration, since the length of the conveyance path from the first sensor to the cutting mechanism is short, there is little possibility that a measurement error affects the film position grasped by the control circuit. Therefore, the cutting mechanism can operate at a more accurate timing.

  A bag making and packaging machine according to a fourth aspect of the present invention is the bag making and packaging machine according to the first or second aspect, wherein the first sensor is disposed downstream of the printing mechanism and upstream of the former.

  According to this structure, the 1st sensor used in order to operate a cutting | disconnection mechanism at an appropriate timing can be arrange | positioned in the place where it is easy to attach.

  The bag making and packaging machine according to the fifth aspect of the present invention is the bag making and packaging machine according to any one of the first to fourth aspects, wherein the length of the conveyance path from the roll holding unit to the printing mechanism is a bag. Is more than three times the size of.

  According to this configuration, the amount of film that must be discarded can be reduced even though the length of the transport path from the roll holder to the printing mechanism is long.

  The bag making and packaging machine according to the sixth aspect of the present invention is the bag making and packaging machine according to any one of the first to fifth aspects, wherein the length of the transport path from the printing mechanism to the cutting mechanism is More than 3 times the size.

  According to this configuration, it is possible to reduce the amount of film that must be discarded even though the length of the conveyance path from the printing mechanism to the cutting mechanism is long.

  A bag making and packaging machine according to a seventh aspect of the present invention is the bag making and packaging machine according to any one of the first to sixth aspects, further comprising a print inspection mechanism and a third sensor. The print inspection mechanism inspects whether or not predetermined information is appropriately printed. The third sensor detects the mark in order to specify the timing for operating the print inspection mechanism. The third sensor is disposed upstream of the print inspection mechanism.

  According to this configuration, the bag making and packaging machine includes the print inspection mechanism and the third sensor corresponding thereto. Therefore, the information printed on the film can be confirmed with high accuracy by the printing mechanism.

  A bag making and packaging machine according to an eighth aspect of the present invention is the bag making and packaging machine according to any one of the first to seventh aspects, further comprising a variable transport length mechanism. The transport length variable mechanism changes the length from the printing mechanism to the cutting mechanism of the film transported by the transport mechanism. The transport mechanism can be stopped once each time the film is transported by the size of the bag. In the stop, both the printing mechanism and the cutting mechanism operate.

  According to this configuration, since the film transport is stopped only at the timing when the printing mechanism and the cutting mechanism are simultaneously operated, the processing speed of the bag making and packaging machine is improved. Furthermore, since the film position is double-checked by the two sensors, the confirmation accuracy of the conveyance state is improved.

  The bag making and packaging machine according to the ninth aspect of the present invention is the bag making and packaging machine according to any one of the first to eighth aspects, wherein the transport mechanism transports the film by the size of the bag twice. Can be stopped. At the first stop, one of the printing mechanism and the cutting mechanism operates. At the second stop, the other of the printing mechanism and the cutting mechanism operates.

  According to this configuration, the processing speed of the bag making and packaging machine is improved.

  According to the bag making and packaging machine according to the present invention, the amount of film that must be discarded can be reduced.

Schematic which shows the structure of the bag making packaging machine 100 which concerns on 1st Embodiment of this invention. The top view of the film F. FIG. The perspective view of the film cylinder FT sealed vertically. The perspective view of the film cylinder FT transversely sealed. The block diagram which shows the control circuit 200 mounted in the bag making packaging machine 100 of FIG. Schematic which shows the structure of 100 A of bag making packaging machines which concern on 2nd Embodiment of this invention. Schematic which shows the structure of the bag making packaging machine 100B which concerns on 3rd Embodiment of this invention.

<First Embodiment>
(1) Overall Configuration FIG. 1 shows a configuration of a bag making and packaging machine 100 according to the first embodiment of the present invention. The bag making and packaging machine 100 includes a transport mechanism 10, a roll holding unit 20, a print mechanism 30, a print inspection mechanism 40, a transport length variable mechanism 50, a former 60, a vertical seal mechanism 70, a horizontal seal mechanism 75, a cutting mechanism 80, a first mechanism. A sensor 91 and a second sensor 92 are provided.

(2) Detailed configuration (2-1) Transport mechanism 10
The transport mechanism 10 transports the packaging film F taken out from the roll holding unit 20.

  FIG. 2 shows the film F. The film F has a certain width extending in the longitudinal direction L and extending in the lateral direction W perpendicular to the longitudinal direction L. On the film F, a design for use as a product packaging bag is repeatedly printed for each dimension D. Furthermore, marks M are printed on the film F at intervals of a dimension D in the vertical direction L. When the film F is finally processed into a bag, the dimension D is the distance between the upper side and the lower side of the bag or the distance between the left side and the right side of the bag, depending on the bag design.

  Returning to FIG. 1, in the process in which the transport mechanism 10 transports the film F, the film F is processed into a bag shape. The transport mechanism 10 finally discharges the packaged packaging item WP.

  The transport mechanism 10 includes a plurality of rollers not provided with reference numerals, a pull-down belt 15, a discharge conveyor 19, and a transport length variable mechanism 50 described later.

(2-2) Roll holding unit 20
The roll holding unit 20 is provided upstream of the conveyance path formed by the conveyance mechanism 10. The roll holding unit 20 holds the film roll FR. The film roll FR includes a core material and a film F that is wound around the core material and that is long in the vertical direction.

  The transport mechanism 10 holds one end of the film F and pulls out the film F from the roll holding unit 20.

(2-3) Printing mechanism 30
The printing mechanism 30 prints predetermined information such as the date of manufacture at an appropriate position of the film F being conveyed. Thereby, predetermined information is printed on each of the packaging articles WP finally discharged from the bag making and packaging machine 100.

  The length of the conveyance path from the roll holding unit 20 to the printing mechanism 30 is at least three times the dimension D of the bag. Thereby, it is easy to obtain a space for arranging the mechanisms from the roll holding unit 20 to the printing mechanism 30.

(2-4) Print inspection mechanism 40
The print inspection mechanism 40 includes a camera.

  The print inspection mechanism 40 inspects whether or not the predetermined information printed by the printing mechanism 30 is printed on the film F in a correct manner. Specifically, the print inspection mechanism 40 determines whether the clearness of printing, the content of information, the printing position, and the like are appropriate or inappropriate.

(2-5) Transport length variable mechanism 50
The conveyance length variable mechanism 50 is one of the components of the conveyance mechanism 10, and changes the position of the part in order to adjust the length of the conveyance path of the film F between the printing mechanism 30 and the cutting mechanism 80. .

  The conveyance length variable mechanism 50 includes a movable roller 51 and a fixed roller 52. The film F is transported from the upstream to the movable roller 51, then transported to the fixed roller 52, and then travels to the subsequent former 60.

  The rotating shaft of the movable roller 51 is moved in the moving direction S by a moving mechanism (not shown). The fixed roller 52 can rotate at a fixed position. Due to the movement of the movable roller 51, the length of the transport path of the film F changes.

(2-6) Former 60
The former 60 is for rounding the film F that has been conveyed in a flat state and overlapping the two vertical sides of the film F. The former 60 has a cylindrical member. The internal space of this cylindrical member is used as a filling path for filling an article to be packaged into a bag formed of the film F.

(2-7) Vertical seal mechanism 70
The vertical sealing mechanism 70 fixes two vertical sides of the film F overlapped by the former 60. The vertical seal mechanism 70 has a heater. The heat generated by the heater is temporarily fixed by softening the overlapping portion of the film F.

  FIG. 3 shows a film cylinder FT having the shape of a cylinder made by sticking. A vertical seal portion SL is formed on the film tube FT by adhering.

(2-8) Horizontal seal mechanism 75
Returning to FIG. 1, the horizontal sealing mechanism 75 fixes two portions facing each other in the film tube FT.

  The horizontal seal mechanism 75 includes a first member 751 and a second member 752 that are opposed to each other via the transport path. The first member 751 and the second member 752 can be moved toward or away from each other by a motor (not shown). Each of the first member 751 and the second member 752 has a heater.

  The film cylinder FT is fixed as follows. First, the first member 751 and the second member 752 approach each other and press the film tube FT. The two parts that are pressed face each other across the internal space of the film tube FT. This pressing is performed over the entire dimension of the film tube FT in the width direction. Next, the heaters of the first member 751 and the second member 752 apply heat to the pressed part of the film tube FT. Thereby, the pressed part is softened and fixed. Finally, the first member 751 and the second member 752 stop pressing and are separated from each other.

  FIG. 4 shows the film tube FT that has undergone the sticking process by the lateral seal mechanism 75. The film tube FT has a horizontal seal portion SW formed by the fixing process of the horizontal seal mechanism 75.

  Returning to FIG. 1, each time the operation of the lateral seal mechanism 75 is finished, the film tube FT is filled with one bag of articles through the inner space of the former 60.

(2-9) Cutting mechanism 80
The cutting mechanism 80 is provided in the horizontal seal mechanism 75. The cutting mechanism 80 includes a blade 801 and a receiving portion 802. The blade 801 is provided on the first member 751 and can be extended and retracted. The receiving portion 802 is provided on the second member 752 and can receive the extended blade 801.

  FIG. 4 shows a cutting position CP at which the cutting mechanism 80 cuts. The cutting position CP is in the horizontal seal portion SW.

  Returning to FIG. 1, in the cutting operation of the cutting mechanism 80, the blade 801 extends toward the receiving portion 802. Thereby, the individual packaging article WP is cut off.

  The length of the conveyance path from the printing mechanism 30 to the cutting mechanism 80 is at least three times the dimension D of the bag. Thereby, it is easy to obtain a space for arranging the mechanisms from the printing mechanism 30 to the cutting mechanism 80.

(2-10) First sensor 91
The first sensor 91 is for detecting a mark M (FIG. 2) printed on the film F in order to specify a cutting position CP (FIG. 4) to be cut in the film tube FT.

  The first sensor 91 is disposed upstream of the cutting mechanism 80 in the conveyance path, and specifically, is disposed between the print inspection mechanism 40 and the conveyance length variable mechanism 50.

(2-11) Second sensor 92
The second sensor 92 is for detecting a mark M (FIG. 2) printed on the film F in order to specify a printing position where predetermined information is to be printed on the film F.

  The second sensor 92 is disposed upstream of the printing mechanism 30 in the transport path.

(3) Control Circuit (3-1) Overall Configuration FIG. 5 shows a control circuit 200 that controls the bag making and packaging machine 100. The control circuit 200 has a CPU 210 and a memory 220. The CPU 210 has a group of input ports and a group of output ports.

(3-2) Input The first detection unit 231, the second detection unit 232, the image processing unit 233, and the operation panel control unit 271 are connected to the input port of the CPU 210.

  The first detection unit 231 converts the signal of the first sensor 91 into a mark detection signal.

  The second detection unit 232 converts the signal of the second sensor 92 into a mark detection signal.

  The image processing unit 233 processes or processes data output from the print inspection mechanism 40.

  The operation panel control unit 271 processes information input by the user via the operation panel 270 mounted on the bag making and packaging machine 100 in order to make various settings, and causes the CPU 210 to read the information.

(3-3) Output The output port of the CPU 210 includes a roller motor drive circuit 251, a roller rotation shaft moving motor drive circuit 252, a printing mechanism drive circuit 253, a heater drive circuit 254, a motor and heater drive circuit 255, and a solenoid drive circuit. 256 is connected.

  The roller motor drive circuit 251 generates a current that drives a motor that rotates various rollers included in the transport mechanism 10.

  The roller rotation shaft moving motor drive circuit 252 generates a current that drives a motor included in a moving mechanism that moves the rotation shaft of the movable roller 51.

  The printing mechanism drive circuit 253 generates a signal or current for controlling the printing mechanism 30.

  The heater drive circuit 254 generates a current that controls the heater of the vertical seal mechanism 70.

  The motor and heater drive circuit 255 generates a signal or current for controlling the motor and heater of the lateral seal mechanism 75.

  The solenoid drive circuit 256 generates a current that controls the solenoid that controls the extension and retraction of the blade 801 of the cutting mechanism 80.

(3-4) Central Processing The CPU 210 detects the mark on the film F via the first sensor 91 and the second sensor 92. In addition, the CPU 210 controls a motor that rotates various rollers included in the transport mechanism 10.

  Therefore, the CPU 210 can grasp where the mark of the film F exists at an arbitrary timing.

(4) Operation Returning to FIG. 1, the “continuous operation” executed by the bag making and packaging machine 100 will be described.

  The transport mechanism 10 always transports the film F at a constant transport speed.

  Since the control circuit 200 (FIG. 5) knows the time when the second sensor 92 detects the mark M and the distance that the film F has been conveyed thereafter, the printing mechanism 30 operates from these values. Calculate the power timing. Thereafter, the control circuit 200 controls the printing mechanism 30 at the calculated timing to print predetermined information at an appropriate position on the film F.

  The film F continues to be further conveyed. Since the control circuit 200 knows the time when the second sensor 92 detects the mark M and the distance that the film F has been conveyed thereafter, the control circuit 200 determines the timing at which the print inspection mechanism 40 should operate from these values. calculate. Thereafter, the control circuit 200 controls the print inspection mechanism 40 at the calculated timing, acquires an image of the film F to be inspected, and performs inspection.

  Next, after the film F passes through the conveyance length variable mechanism 50, the film F is rounded by the former 60, and the two vertical sides of the film F are overlapped. A vertical seal mechanism 70 heats the overlap. Thereby, the overlap is fixed, and a film cylinder FT having a vertical seal portion SL (FIG. 3) is made.

  The film cylinder FT is filled with one bag of articles in the previous cycle. The horizontal seal mechanism 75 creates a horizontal seal portion SW (FIG. 4) at a portion of the film tube FT that is higher than the portion where articles are stored. The cutting mechanism 80 cuts the cutting position CP (FIG. 4) in the horizontal seal part SW. The timing at which the horizontal sealing mechanism 75 and the cutting mechanism 80 operate is determined from the time when the first sensor 91 detects the mark M by the control circuit 200 (FIG. 5) and the distance that the film F is conveyed thereafter. Is done.

  The individual packaged articles WP cut in this way are discharged from the bag making and packaging machine 100 by the discharge conveyor 19.

(5) Features (5-1)
The bag making and packaging machine 100 includes two sensors for detecting the mark M. That is, the first sensor 91 corresponding to the cutting mechanism 80 and the second sensor 92 corresponding to the printing mechanism 30. Therefore, even when the joint formed by the replenishment of the film roll FR reaches the transport mechanism 10 and the interval between the adjacent marks M becomes an inappropriate value other than the dimension D, it is disconnected from the printing mechanism 30. Each of the mechanisms 80 can operate at an optimal timing. Therefore, the amount of film F that must be discarded can be reduced.

(5-2)
The second sensor 92 is disposed upstream of the printing mechanism 30. Since the printing mechanism 30 can use the detection signal of the second sensor 92 disposed upstream of the printing mechanism 30 itself, the printing mechanism 30 can operate at an appropriate timing.

(5-3)
The first sensor 91 used for operating the cutting mechanism 80 at an appropriate timing is disposed downstream of the printing mechanism 30 and upstream of the former 60. In this region, the conveyance path extends linearly. In addition, in this region, the film F being conveyed is in the form of a sheet and has not yet been rounded. Therefore, it is easy to attach the first sensor 91 to this region.

(5-4)
The length of the conveyance path from the roll holding unit 20 to the printing mechanism 30 is at least three times the dimension D of the bag. According to this configuration, it is possible to reduce the amount of the film F that must be discarded even though the transport path from the roll holding unit 20 to the printing mechanism 30 is long.

(5-5)
The length of the conveyance path from the printing mechanism 30 to the cutting mechanism 80 is at least three times the dimension D of the bag. According to this configuration, it is possible to reduce the amount of the film F that must be discarded even though the conveyance path from the printing mechanism 30 to the cutting mechanism 80 is long.

(6) Modifications Modifications of the first embodiment are shown below.

(6-1) First Modification 1A
(6-1-1) Operation The bag making and packaging machine 100 according to the first modification 1A of the first embodiment is different from the bag making and packaging machine 100 according to the first embodiment shown in FIG. The same. However, in the operation method, the bag making and packaging machine 100 according to the first modified example 1A executes the “intermittent operation” instead of the “continuous operation” described above. That is, conveyance and stop of the film F are repeated.

  The transport mechanism 10 temporarily stops once every time the film F is transported by the bag dimension D (FIG. 2). In the stop period, both the printing mechanism 30 and the cutting mechanism 80 operate.

  In order to make it possible to operate both the printing mechanism 30 and the cutting mechanism 80 simultaneously, prior to the packaging operation, the conveyance length variable mechanism 50 sets the length of the conveyance path from the printing mechanism 30 to the cutting mechanism 80 to an optimum value. Change to Thereby, it is possible to suppress the occurrence of mismatch between the printing and cutting positions.

  The conveyance stop timing is determined by the control circuit 200 from the time when the second sensor 92 detects the mark M and the distance that the film F has been conveyed thereafter. In addition, the control circuit 200 can confirm whether or not the film F is appropriately conveyed at an expected timing using the time when the first sensor 91 detects the mark M.

  When the joint portion of the film enters the transport path, the second sensor 92 calculates the difference between the separation distance between the adjacent marks M across the joint portion and the dimension D of the bag. The control circuit 200 adjusts the length of the conveyance distance from the printing mechanism 30 to the cutting mechanism 80 by controlling the conveyance length variable mechanism 50 according to the difference value. As a result, even if there is a portion of the film F where the interval between the marks M is inconsistent, printing and cutting can be performed appropriately.

(6-1-2) Features According to this configuration, since the conveyance of the film F is stopped only at the timing when the printing mechanism 30 and the cutting mechanism 80 are simultaneously operated, the processing speed of the bag making and packaging machine 100 is improved. . Furthermore, since the position of the film F is double-checked by the two sensors, the confirmation accuracy of the conveyance state is improved.

(6-2) First Modification 1B
(6-2-1) Operation The bag making and packaging machine 100 according to the first modified example 1B executes an intermittent operation different from the first modified example 1A described above.

  The conveyance mechanism 10 can perform an intermittent operation with two temporary conveyance stops in addition to the intermittent operation with one temporary conveyance stop described in the first modification 1A. That is, the transport mechanism 10 can stop twice each time the film F is transported by the bag dimension D (FIG. 2). In the first conveyance stop period, the printing mechanism 30 prints predetermined information on the film F. In the second conveyance stop period, the cutting mechanism 80 cuts the horizontal seal portion SW of the film tube FT.

  The timing of the first conveyance stop is determined by the control circuit 200 from the time when the second sensor 92 detects the mark M and the distance that the film F has been conveyed thereafter. The timing of the second conveyance stop is determined by the control circuit 200 from the time when the first sensor 91 detects the mark M and the distance that the film F is conveyed thereafter.

  Prior to the start of the packaging operation of the bag making and packaging machine 100, the length of the transport path of the film F between the printing mechanism 30 and the cutting mechanism 80 is appropriately adjusted by the transport length variable mechanism 50. Thereby, the bag making and packaging machine 100 normally performs an intermittent operation with one temporary conveyance stop, while performing an intermittent operation with two temporary conveyance stops in the vicinity of the joint portion of the film F. it can.

(6-2-2) Features According to this configuration, as long as the bag making and packaging machine 100 continues to manufacture the same type of packaged article using the same type of film F, the conveyance length variable mechanism 50 needs to operate. Disappear. As a result, the processing speed of the bag making and packaging machine 100 is further improved.

Second Embodiment
(1) Configuration FIG. 6 shows a configuration of a bag making and packaging machine 100A according to the second embodiment of the present invention. The bag making and packaging machine 100A is different from the bag making and packaging machine 100 according to the first embodiment in the arrangement position of the first sensor 91. The first sensor 91 is disposed downstream of the vertical seal mechanism 70 and upstream of the cutting mechanism 80.

(2) Features The cutting mechanism 80 can use the detection signal of the first sensor 91 arranged upstream of the cutting mechanism 80 itself and in the vicinity of the cutting mechanism 80 in order to determine the timing for performing the cutting operation. . Therefore, since the length of the conveyance path from the first sensor 91 to the cutting mechanism 80 is short, the measurement error is less likely to affect the position of the film F grasped by the control circuit 200. As a result, the cutting mechanism 80 can operate with more accurate timing.

(3) Modification The intermittent operation according to the first modification 1A or the second modification 1B of the first embodiment may be applied to the bag making and packaging machine 100A according to the second embodiment.

<Third Embodiment>
(1) Configuration FIG. 7 shows a configuration of a bag making and packaging machine 100B according to a third embodiment of the present invention. In the bag making and packaging machine 100B, the arrangement positions of the first sensor 91 and the second sensor 92 are the same as those in the bag making and packaging machine 100 according to the first embodiment. However, the bag making and packaging machine 100B is different from the bag making and packaging machine 100 according to the first embodiment in that it further includes a third sensor 93.

  The third sensor 93 is for detecting the mark M in order to specify the timing for operating the print inspection mechanism 40. The third sensor 93 is disposed upstream of the print inspection mechanism 40 in the transport path, and specifically, is disposed between the print inspection mechanism 40 and the print mechanism 30.

(2) Features The bag making and packaging machine 100B includes a print inspection mechanism 40 and a third sensor 93 corresponding thereto. Therefore, the information printed on the film F by the printing mechanism 30 can be confirmed with high accuracy.

(3) Modification The intermittent operation according to the first modification 1A or the second modification 1B of the first embodiment may be applied to the bag making and packaging machine 100B according to the third embodiment.

F film FR film roll WP packaged article 10 transport mechanism 20 roll holder 30 printing mechanism 40 print inspection mechanism 50 transport length variable mechanism 51 movable roller 52 fixed roller 60 former 70 vertical seal mechanism 75 horizontal seal mechanism 80 cutting mechanism 91 first sensor (Cutting sensor)
92 Second sensor (printing sensor)
93 Third sensor (printing inspection sensor)
100, 100A, 100B Bag making and packaging machine

Japanese Patent No. 3971833

Claims (9)

A bag making and packaging machine for packaging an article with a bag made of a film on which marks are printed at regular intervals in a vertical direction, wherein the interval is a first side of the bag opposite to the first side. It is a dimension up to two sides,
A transport mechanism for transporting the film from upstream to downstream;
A roll holding unit for holding a film roll on which the film is wound;
A printing mechanism that is arranged downstream of the roll holding unit and prints predetermined information on the film;
A former disposed downstream of the printing mechanism and overlapping the two vertical sides of the film;
A vertical sealing mechanism that is arranged downstream of the former and that bonds the two vertical sides overlapped to form a film cylinder;
A transverse seal mechanism that is arranged downstream of the longitudinal seal mechanism and that creates a transverse seal portion in the film cylinder extending in a transverse direction perpendicular to the longitudinal direction by fixing two opposing portions of the film cylinder;
A cutting mechanism disposed downstream of the vertical seal mechanism and cutting the film tube at the horizontal seal portion;
A first sensor for detecting the mark in order to specify a cutting position of the film tube to be cut;
A second sensor for detecting the mark for specifying a printing position on which the predetermined information of the film is to be printed;
A bag making and packaging machine. The second sensor is disposed upstream of the printing mechanism;
The bag making and packaging machine according to claim 1. The first sensor is disposed downstream of the vertical sealing mechanism and upstream of the cutting mechanism.
The bag making and packaging machine according to claim 1 or 2. The first sensor is disposed downstream of the printing mechanism and upstream of the former.
The bag making and packaging machine according to claim 1 or 2. The length of the conveyance path from the roll holding part to the printing mechanism is at least three times the dimension of the bag,
The bag making and packaging machine according to any one of claims 1 to 4. The length of the conveyance path from the printing mechanism to the cutting mechanism is at least three times the dimension of the bag.
The bag making and packaging machine according to any one of claims 1 to 5. A print inspection mechanism for inspecting whether or not the predetermined information is appropriately printed;
A third sensor for detecting the mark in order to specify a timing for operating the print inspection mechanism;
Further comprising
The third sensor is disposed upstream of the print inspection mechanism.
The bag making and packaging machine according to any one of claims 1 to 6. A transport length variable mechanism for changing the length of the film transported by the transport mechanism from the printing mechanism to the cutting mechanism;
Further comprising
The transport mechanism can stop once each time the film is transported by the size of the bag,
In the stop, both the printing mechanism and the cutting mechanism operate.
The bag making and packaging machine according to any one of claims 1 to 7. The transport mechanism can stop twice each time the film is transported by the size of the bag,
In the first stop, one of the printing mechanism and the cutting mechanism operates,
The other of the printing mechanism and the cutting mechanism operates in the second stop.
The bag making and packaging machine according to any one of claims 1 to 8.

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