JP5687008B2 - Paper feed control method and apparatus in continuous packaging machine, and continuous packaging machine for paper feed control - Google Patents

Description

  The present invention provides, for example, a paper feed control method and apparatus in a continuous packaging machine for continuously producing a bag package containing packages in a bag formed from a continuous packaging material, and a continuous paper feed control of the packaging material. Related to packaging machines.

  Conventionally, as a packaging machine, a belt-like continuous packaging material is bent into a cylindrical shape with side edges substantially closed by a former, and the side edges are sealed with vertical seals along the outer peripheral surface of the filling cylinder. Forming a cylindrical packaging material, feeding the package to be packaged in the cylindrical packaging material, and continuously producing a bag package by performing a horizontal seal across the cylindrical packaging material between the delivered packages Continuous bag making and packaging machines have been put into practical use.

  From the viewpoint of the operation method, the continuous bag making and packaging machine stops the feeding of the packaging material for a certain period of time after feeding out the packaging material for one bag, and during the stop, the vertical seal, the feeding of the package, the horizontal Intermittent operation method that performs sealing and cutting, and continuous operation method that performs continuous sealing without stopping the feeding of packaging materials, and performs vertical sealing, feeding of packages, horizontal sealing and cutting in synchronization with the feeding of packaging materials It is divided into. Further, the continuous bag making and packaging machine has a vertical bag making and filling machine that feeds in the vertical direction as shown in FIG. 11 and FIG. 12 according to the feeding direction of the packaging material formed into a cylindrical shape, as shown in FIG. It is divided into horizontal bag making and packaging machines that send in the horizontal direction.

  FIG. 11 is a perspective view showing an example of a vertical bag making filling and packaging machine, and the right side of the figure is a vertical bag making filling and packaging machine 1a for forming a cylindrical packaging material by a palm seal (fin seal), The left side of the figure is a vertical bag-filling and packaging machine 1b for forming a cylindrical packaging material by an envelope sticker (wrap seal). FIG. 12 is a schematic side view (a) and a schematic front view of a vertical bag-filling-packaging machine 1a that forms a cylindrical packaging material with a palm-sealed seal. After the belt-shaped packaging material Fw fed out from the raw roll portion 60 is guided by several rotatable guide rolls 61 and fed into the former 9, the former 9 is formed into a cylindrical shape with substantially closed edges. The superposed edges are subjected to vertical sealing by the vertical sealing devices 3 and 3 'and formed into a cylindrical packaging material Ft. The package A is guided by the hopper 6 and fed into the cylindrical packaging material Ft by filling and charging, and the cylindrical packaging material Ft is placed in the horizontal sealing device 5 at a position where the package A is sandwiched in the front and back in the paper feeding direction. By 5, a horizontal seal is applied in a direction across the cylindrical packaging material Ft. A bag in which the package A is filled by cutting the cylindrical packaging material Ft in accordance with the region where the horizontal seal is applied by a cutter device provided by being incorporated in the horizontal seal devices 5 and 5. A package P is manufactured. The horizontal sealing devices 5 and 5 are arranged facing each other and opened and closed by approaching and separating from each other and reciprocating in the feeding direction of the cylindrical packaging material Ft, so that the box motion as shown in FIG. do. The filling cylinder 2 is connected to the downstream of the former 9, and belt-type paper feeding devices 4 and 4 are provided on the outer peripheral surface of the filling cylinder 2 to feed the cylindrical packaging material Ft. The paper feeding devices 4 and 4 are respectively driven by individual or common paper feeding servomotors 7.

  FIG. 13 shows a side view (a) and a top view (b) showing an example of a horizontal bag making and packaging machine 1c. The belt-shaped packaging material Fw fed from the original roll portion 70 by the paper feed roller 72 is guided by a rotatable guide roll 71 and fed into the former 79, and the former 79 is formed into a cylindrical shape with the edges substantially closed. After that, the paper is further fed by paper feed rollers 74 and 74 driven in synchronism with the paper feed roller 72, and the vertical seal is applied to the overlapped edges by the vertical seal rollers 73 and 73, so that the cylindrical packaging material Ft. To be molded. The package B is fed into the inside of the cylindrical packaging material Ft by appropriate feeding means such as a conveyor, and the cylindrical packaging material Ft is transversely sealed in a direction across the packaging B at a position where the packaging B is sandwiched before and after in the paper feeding direction. , 75 to provide a lateral seal. By cutting the cylindrical packaging material Ft in accordance with the horizontal seal position by a cutter device provided by being incorporated in the horizontal seal devices 75, 75, etc., the bag package P ′ in which the package B is packaged. Is manufactured. The paper feed rollers 74 are usually driven by a common paper feed servo motor 77.

  When manufacturing a bag by applying a vertical seal to a band-shaped packaging material and manufacturing a bag by applying a horizontal seal to the cylindrical packaging material, the time required for the sealer to sandwich the packaging material ( (Depending on the feed speed of the packaging material passing through) and the temperature of the sealer at that time must be properly adjusted, but it is not always easy to make the adjustment correctly. Therefore, even when the packaging material feed rate is variable and the bag length is variably set, the sealer keeps the packaging material in contact with the seal regardless of the bag length. It has been proposed to control the feed rate of the packaging material at the time of sealing so that the time becomes a certain time (see Patent Document 1).

  In a vertical bag making and filling machine, for example, when packaging the same type of product for each packaging bag, or when obtaining a continuous bag body in which a plurality of different types of products are arranged in series, a predetermined number There are cases where a continuous bag body in which the bag bodies are connected by perforations or the like is manufactured. In this case, at the time of the operation preparation operation of the packaging machine, in order to give the setting standard to the packaging machine together with its position as to whether only the perforation is given or the cutting is performed when the end seal is performed, The separation position is set in advance by a set button or the like. Then, a suspension header for suspending the continuous bag body at the store etc. is formed of the same packaging material as the bag packaging material, and the header length, the packaging bag length, and the number of packaging bags are arbitrary values. It has been proposed to manufacture a continuous bag body with a hanging header that can be set to (see Patent Document 2). According to this proposal, the operation mode during operation of the packaging machine is the normal operation mode in which packaging is performed for each conventional packaging bag only by switching setting by the data input means by the same vertical bag making filling packaging machine. There are two operation modes: a header-attached continuous bag operation mode for manufacturing a header-attached continuous bag body in which a header and a normal bag of a required length are made continuous by discontinuous cuts such as perforations. It can be selected.

  In a bag making and filling machine that continuously feeds a packaging material (referred to as “continuous paper feed”), a continuously connected packaging bag with a header (referred to as “continuous packaging bag”) may be manufactured. Here, the header refers to an empty bag having a short length in the feeding direction of the packaging material and containing no items other than air inside. The following methods have been proposed as a method for manufacturing such a continuous bag. That is, in a bag making and filling machine that obtains a continuous bag in which a product bag and a header are continuously connected to each other by giving end sealing to a cylindrical film that is continuously conveyed at predetermined intervals, the controller The end seal mechanism is driven and controlled so that the operation cycle is constant, and the product bag is set according to the set length difference between the set number of product bags and the set length of the product bag and the header inputted by the data input means. One of the set length and the set length of the header is the reference length, the film transport speed obtained from the reference length is the reference transport speed, and the film transport speed corresponding to the other length is the reference transport speed. On the other hand, a bag making and filling machine that drives and controls the film feeding mechanism so as to shift the speed has been proposed (see Patent Document 3).

  In this proposal, the paper feed speed of the longest part of each bag part and header part constituting the continuous bag is set as the reference speed, and when the bag part is the longest, the paper feed is performed at a constant speed including the horizontal seal section. In other bag portions, only the horizontal seal section is set as the reference speed, and in other cases, the paper feed speed is changed to cope with it. Since the header portion is usually short in length, the paper feed speed is reduced to cope with it. As a result of such measures, in a continuous bag making and filling machine, a packaged product made up of continuous packaging bags in which product bags having various lengths and headers are continuously provided by the same packaging material is obtained.

  According to this method, the paper feed speed in the longest bag portion is the reference speed, that is, the speed at which the horizontal seal is applied. In a normal vertical bag making filling and packaging machine, the vertical movement stroke of the horizontal sealer is constant. Therefore, if the reference speed is high, the horizontal sealing time to be applied while moving the stroke is short. That is, the sealing condition that the horizontal sealing time is the shortest is applied to the horizontal sealing of each bag portion. Thus, in this method, the lateral seal time is determined from the bag length, and it is impossible to arbitrarily change the lateral seal time. Therefore, whether or not sealing is possible depends on the seal pressure and the temperature of the lateral sealer. Rely on the settings. For this reason, the selection range of a packaging material becomes narrow and the processing capacity of a packaging machine also has a limit.

Japanese Patent Laid-Open No. 61-12327 JP 07-285510 A JP 2009-83894 A

Therefore, in a continuous filling machine in which the packaging material is fed by continuous paper feeding, it is desired to ensure an appropriate sealing time when manufacturing a continuous bag with a header.
The object of the present invention is to determine whether or not sealing is possible depending on the combination of the sealing time as the time for the sealer to sandwich and heat the packaging material, the sealing pressure that is the pressure when the sealer sandwiches the packaging material, and the sealer sealing temperature. However, by giving priority to the sealing time of the horizontal seal and defining other conditions under the conditions, it is possible to select a packaging material from a wide range while reliably forming the horizontal seal, and the packaging machine It is to provide a continuous wrapping machine and a paper feed control in the continuous wrapping machine that make it possible to manufacture a continuous-packed bag with a header by making full use of the processing capacity.

In order to achieve the above object, a paper feed control method in a continuous wrapping machine according to the present invention accommodates a package in a bag formed sequentially from a continuous wrapping material, and a horizontal sealer sandwiches the wrapping material while the wrapping material In a continuous packaging machine that continuously manufactures a bag package by applying a horizontal seal to the packaging material while moving in the feed direction, the single bag package is manufactured corresponding to the packaging speed of the continuous packaging machine. in accordance with the change of the transverse sealing period for applying the lateral seal during one packaging cycle, based on the transverse sealing period determines the paper feed speed, wherein the packaging material is fed in the transverse sealing period, the 1 cycle in by shifting the chart speed within the remaining time, as characterized by securing the sheet feeding amount in the first cycle of without changing the packaging speed of the continuous packing machine That.

Further, the paper feed control device in the continuous packaging machine according to the present invention accommodates a package in a bag formed sequentially from a continuous packaging material, and a horizontal sealer moves in the feeding direction of the packaging material while sandwiching the packaging material. in a continuous packaging machine for continuously producing a bag package by performing horizontal sealing to the packaging material while, during one packaging cycle to produce the bag package of one and corresponds to the packaging speed of the continuous packing machine A horizontal seal control unit that controls the horizontal seal period in accordance with a change in the horizontal seal period for applying the horizontal seal, and a paper feed speed at which the packaging material is fed during the horizontal seal period based on the horizontal seal period. defined, wherein the said paper feed speed be shifting in the remaining in 1 cycle time, probability paper feed amount in the first cycle of without changing the packaging speed of the continuous packing machine It is characterized by comprising a carriage control unit for.

Further, the continuous packaging machine for controlling the paper feed of the packaging material according to the present invention accommodates the packaged material in a bag formed sequentially from the continuous packaging material, and the horizontal sealer sandwiches the packaging material while feeding the packaging material. A continuous packaging machine that continuously manufactures a bag packaging body by applying a horizontal seal to the packaging material while moving to the packaging material , corresponding to the packaging speed of the continuous packaging machine, and manufacturing one bag packaging body in accordance with the change of the transverse sealing period for applying the lateral seal during one packaging cycle, based on the transverse sealing period determines the paper feed speed, wherein the packaging material is fed in the transverse sealing period, in said one cycle By shifting the paper feed speed within the remaining time, the paper feed amount in one cycle is ensured without changing the packaging speed of the continuous packaging machine .

In the paper feed control in the continuous packaging machine, said transverse sealer for applying the lateral seal said packaging material has a stroke that moves is defined in the feed direction of the packaging material, the paper feed rate, as a speed pattern, It can be determined based on the lateral sealing period and the stroke.

  In the paper feed control in the continuous packaging machine, the packaging bag may be a continuous packaging bag in which a plurality of bags having a single bag length or a plurality of bag lengths are continuous in the feed direction of the packaging material. it can.

  In the paper feed control in the continuous packaging machine, the continuous packaging bag may be a continuous packaging bag with a header having a header formed from the packaging material at an end portion.

  In the paper feed control in the continuous packaging machine, the drive source for feeding the packaging material may be a dedicated servo motor.

  In the paper feed control in the continuous wrapping machine, the continuous wrapping machine is a vertical or horizontal continuous bag making and packaging machine provided with a cylinder making machine for forming a fed strip-shaped packaging material into a cylindrical packaging material. be able to.

According to the paper feed control in this continuous wrapping machine (that is, the paper feed control method and apparatus, and the continuous wrapping machine that performs such a paper feed control), one bag package is manufactured corresponding to the packaging speed of the continuous wrapping machine. in accordance with the change of the lateral sealing time performing lateral seal during one packaging cycle to define the paper feed speed packaging material in the transverse sealing period it is sent on the basis of the said transverse sealing period, and the lateral sealing period is being sent by packaging a defined feed rate, by decelerating increase the period of rest, without changing the sealing time, it is possible to change the bag length. With this function, it is possible to perform packaging operations with different bag lengths each time without changing the packaging speed of the continuous packaging machine . For example, bags 1 and 2 can be set to different bag lengths, It is possible to wrap such as putting ingredients in 1, putting sauce in bag 2, connecting the two sets together, and attaching a header at the end.

Packaging material feed control method definitive continuous packaging machine according to the invention and apparatus, as well as a continuous packing machine that performs paper feed control of the packaging material, which is configured as described above, and corresponds to the packaging speed of the continuous packing machine In accordance with the change in the horizontal seal period for applying the horizontal seal in one packaging cycle for producing one bag package, the paper feed speed at which the packaging material during the horizontal seal period is sent based on the horizontal seal period is determined. By actively changing the feed rate of the packaging material other than the horizontal sealing period in the one packaging cycle, the sealing time of the horizontal seal is prioritized, and other conditions are determined under that condition. can be a reference to packaging operation, thereby, while securing the sheet feeding amount in one cycle of without changing the packaging speed of the continuous packing machine, conventionally, the seal is difficult The transverse sealing can be surely formed Tsu wrapping material from among a wide range can be selected packaging. And the continuous-packing bag with a header can be manufactured fully utilizing the processing capability of a continuous packaging machine.

It is a block diagram which shows one Example of the packaging material feed control in the continuous packaging machine by this invention. It is a flowchart which shows an example of the packaging material feed control in the continuous packaging machine shown in FIG. FIG. 3 is a graph showing the film feed speed, the position and speed of the up and down movement of the horizontal sealer, and the time change of the position and speed of the opening and closing operation when a normal bag is manufactured in this continuous packaging machine. FIG. 4 is an external front view of a quadruple packaging bag with a header. FIG. 5 is a graph showing the film feed speed, the position and speed of the horizontal sealer up and down movement, and the position and speed of the opening and closing movement when the quadruple packaging bag with a header shown in FIG. 4 is manufactured. FIG. 6 is an explanatory diagram showing how the packaging material is fed according to the presence / absence of header marks and registration marks. FIG. 7 is an external front view of a quadruple packaging bag with a header having a different bag length. FIG. 8 is a graph showing the film feed speed, the position and speed of the up-and-down movement of the horizontal sealer, and the time change of the position and speed of the opening and closing operation when manufacturing the four-pack wrapping bags with headers different in bag length shown in FIG. is there. FIG. 9 is an explanatory view showing how the packaging material is fed according to the presence / absence of a header mark and a registration mark. FIG. 10 is a graph for explaining a comparison between the feed control of the packaging material used for manufacturing the continuous packaging bag with a header according to the present invention and the feed control used for manufacturing the conventional continuous packaging bag. It is a perspective view which shows the aspect of a continuous packaging machine. It is a figure which shows an example of the vertical bag making filling packaging machine which is one aspect | mode of a continuous packaging machine. It is a figure which shows an example of the horizontal type bag making packaging machine which is another aspect of a continuous packaging machine.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a paper feeding control method and apparatus in a continuous packaging machine according to the present invention and a continuous packaging machine that performs paper feeding control of a packaging material will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing an embodiment of a paper feed control device in a continuous packaging machine according to the present invention. FIG. 2 is a flowchart showing an example of paper feed control in the paper feed control apparatus shown in FIG.

  In the example shown in FIG. 1, the continuous packaging machine is assumed to be a vertical bag making and filling machine, and in the paper feed control device 10 in the vertical bag making and filling machine, the control means 11 includes a central control unit 12 and A paper feed control unit 13 that controls input / output to the paper feed unit 20 and controls the paper feed unit 20; a horizontal sealer control unit 14 that controls output to the horizontal sealer unit 30 and controls the horizontal sealer unit 30; And a weighing control unit 15 that controls the weighing device 40 by controlling input / output to / from the weighing device 40. The central control unit 12 receives input from an external input unit 50 and exchanges signals with the paper feed control unit 13, the lateral sealer control unit 14, and the weighing device 40, so that the whole as a continuous packaging machine. Is responsible for the timing adjustment. Moreover, the control means 11 is provided with the memory | storage part 16 which memorize | stores the various setting values and data for driving a continuous packaging machine. Input signals or control signals are output to the control unit 11 from the paper feeding unit 20, the horizontal sealer unit 30, the weighing device 40, and the input unit 50, respectively. From the paper feeding unit 20, a mark detection signal 25 from a mark detector 21 that detects a mark printed on the packaging material and a packaging material feed length signal 26 measured by the length measuring device 22 are sent to the control means 11. Then, the control means 11 outputs a motor control signal 27 to a servo motor 23 for paper feed (packaging material feed or film feed; the same applies hereinafter) in the paper feed control unit 13.

  The horizontal sealer 30 wraps the horizontal sealer 5 and the horizontal sealer 5 in order to make the horizontal sealer 5 perform box motion, and the horizontal sealer 5 reciprocates in the vertical direction (vertical direction as the paper feed direction). And a horizontal sealer opening / closing servo motor 32 that is pressed or retracted close to the material. The horizontal sealer control unit 14 of the control means 11 outputs a vertical movement control signal 35 and an open / close control signal 36 to the horizontal sealer vertical servo motor 31 and the horizontal sealer opening / closing servo motor 32 of the horizontal sealer unit 20, respectively. The rotation output in a certain direction of the horizontal sealer vertical servomotor 31 and the horizontal sealer opening / closing servomotor 32 is converted into vertical motion or opening / closing motion by an appropriate motion conversion mechanism such as a cam mechanism or a crank mechanism.

  The weighing device 40 is a device that measures the amount of a package when the package is put into a bag formed from a cylindrical packaging material surrounding the filling cylinder, and is normally disposed above the filling cylinder. A predetermined weighed package is dropped by opening and closing the shutter in the hopper and filled in the bag. The weighing control unit 15 of the control means 11 outputs a drop request signal 45 for dropping the package from the hopper to the filling cylinder to the weighing device 40, and receives a discharge completion signal 46 indicating that the package has been discharged. .

  The input means 50 includes a continuous bag number (1 to N), a header length (Lh), a continuous bag length (1) to a bag length ( N), setting values are input for items such as the presence / absence of a header mark and the presence / absence of a registration mark on a bag, and are stored in the storage unit 16 via the central control unit 12 of the control means 11 .

  The paper feed control device of the continuous packaging machine shown in FIG. 1 is controlled according to the procedure shown in the flowchart shown in FIG. That is, when the operation switch of the vertical bag making filling and packaging machine is turned on and preparation for the production of continuous packaging bags is completed, the control means 11 first outputs a drop request signal to the weighing device 40 (step 1 (“ Abbreviated as “S1”, and so on)). It is determined whether or not the discharge completion signal 46 is input from the weighing device 40 (S2). When the discharge completion signal 46 is not input in the determination of S2, the process returns to S1. However, when the discharge completion signal 46 is input, the control unit 11 controls the film feed servomotor 23 of the paper feed unit 20 to perform motor control. The signal 27 is output, and at this time, the film feed servomotor 23 feeds the paper by the length of the bag (film feed) (S3). When the film is fed for the length of the bag, the control means 11 moves the horizontal sealer up / down servo motor 31 and the horizontal sealer opening / closing servo motor 32 up and down so as to perform horizontal sealing on the horizontal sealer 30. The control signal 35 and the opening / closing control signal 36 are output (S4). In relation to the lateral seal portion, a perforation used to separate the bags from the continuous packaging bags is formed (S5). Then, the continuation number count is updated by +1 (S6).

  It is determined whether or not the updated continuous number count has reached the set continuous number (S7). If it is determined in S7 that the number of continuous packages has not reached the set number of continuous packages, the process returns to S1 and the subsequent continuous packaging bags are formed and the product is filled, but the number of continuous packages is reached. If so, the control means 11 outputs a motor control signal 27 to the film feed servomotor 23 of the paper feed section 20, and at this time, the film feed servomotor 23 feeds the film by the header length Lh (S8). . When the film feed for the header length Lh is performed, the control means 11 moves the horizontal sealer vertical servo motor 31 and the horizontal sealer opening / closing servo motor 32 up and down so as to perform horizontal sealing on the horizontal sealer 30. The dynamic control signal 35 and the opening / closing control signal 36 are output (S9). In connection with the horizontal seal portion, cutting with a cutter is performed to separate the continuous packaging bag from the cylindrical packaging material (S10). Next, the continuous package count is cleared (S11), and the next continuous packaging bag is prepared.

The graph of FIG. 3 shows the film feed (paper feed) speed, the position and speed of the up and down movement of the horizontal sealer, and the position and speed of the opening and closing operation when the bag is normally produced in this vertical bag making and filling machine. Changes are shown. In FIG. 3, the manufacture up to the bag 5 is depicted, but of course, more packaging bags can be manufactured continuously. In the case of manufacturing a normal bag, it is obtained by setting the header length Lh to zero and the number of continuous packages to one. In the manufacture of bags package of continuous packaging is manufactured from the bag 1 by one bag per cycle, in one wrapping cycle, the paper feed speed V is the slowest speed paper feed speed Vs at the time of transverse sealing It is set, and when the horizontal seal is completed, it is gradually accelerated to reach the maximum paper feed speed Vf, and then gradually decelerated to the paper feed speed Vs to cope with the next horizontal seal.

  In the horizontal sealer 5 of the horizontal sealer 30, as described above, the continuous rotation of the vertical servo motor 31 and the open / close servo motor 32 is converted into a vertical reciprocating motion or an open / close motion via an appropriate motion conversion mechanism. The up-and-down operation of the horizontal sealer 5 is periodically repeated. During this time, the horizontal sealer 5 also periodically repeats the opening and closing operation by the operation of the open / close servo motor 32. In a certain packaging cycle, the horizontal sealer 5 starts to operate in the closing direction (positive speed) while ascending toward the uppermost position, descends toward the lowermost position after the ascent movement decelerates and reaches the uppermost position. During the process, the horizontal sealing period Ts is started. Thereafter, the horizontal sealing period Ts is continued until it reaches a position slightly before the lowest position. In the case where only simple horizontal sealing is performed, in the horizontal sealing period Ts, the vertical speed of the horizontal sealer 5 is the same as the constant paper feed speed Vs (the downward speed is a positive speed). During this time, the opening / closing position is the closed position and the opening / closing speed is zero, and the packaging material (film) that moves at the same paper feed speed Vs while descending is laterally sealed. When the horizontal seal period Ts ends, the horizontal sealer 5 starts to open by the operation of the open / close servo motor 32, reaches the lowest position, and then proceeds to the next packaging cycle. In a new packaging cycle, the lateral sealer 5 starts to rise from the lowest position and continues to retract toward the open position (negative speed), allowing passage when the packaging material is fed. After the horizontal sealer 5 reaches its open position and stops for a while, the horizontal sealer 5 starts to advance again toward the closed position, and when the horizontal sealer 5 is in the middle of descending from the uppermost position where the horizontal sealer 5 is fully raised, On the other hand, the closed position is reached and the horizontal sealing period Ts is started. In the following, during the horizontal sealing period Ts, the horizontal sealer 5 is in the closed position, comes into contact with the packaging material, stops at a speed of zero in the opening / closing direction, and moves in synchronization with the lowering direction as the packaging material is fed. Is sealed by heating and pressurizing, the horizontal sealing period Ts ends before the lowermost position, and then reaches the lowermost position, and then reverses and rises toward the uppermost position for further packaging of the bag. Repeat the same operation as above.

  4-6 is a figure which shows the Example in the case of manufacture of the quadruple packaging bag with a header, FIG. 4 is an external view of a quadruple packaging bag with a header, FIG. 5 is quadruple with a header shown in FIG. Graph showing the film feed (paper feed) speed, the position and speed of the up and down movement of the horizontal sealer, and the position and speed of the opening and closing action when manufacturing the packaging bag. FIG. 6 shows whether header marks and registration marks are present. It is explanatory drawing which shows the mode of the paper feed of the packaging material according to.

  As shown in FIG. 4, the quadruple packaging bag 100 with a header includes four continuous bags 101, 102, 103, and 104 and a header 105 that follows the bag 104. The bag is manufactured from the lowermost bag 101, and the header 105 is manufactured last. The bottom seal part 101a at the lower end of the lowermost bag 101 is formed by cutting with a cutter between the side seal part made with the header of the previously produced quadruple packaging bag. It is. The lateral seal portions 101b and 102a between adjacent bags of the four bags 101, 102, 103, and 104, 102b and 103a, 103b and 104a, and the lateral seal portions 104b and 105a between the bag 104 and the header 105, respectively, The perforation 110 is formed at the center in the width direction of the horizontal seal portion formed by the horizontal sealer 5. Further, the horizontal seal portion 105b at the upper end of the uppermost header 105 is formed by cutting with a cutter between the horizontal seal portion and the lowermost bag of the quadruple packaging bag manufactured subsequently. It has been done. At the center of the horizontal seal portion 105b of the header 105, a suspension hole 105c for passing a suspension hook (not shown) at the store is formed. The suspension hole 105c may be formed as two holes arranged side by side or a long hole that is long in the lateral direction in the lateral seal portion 105b.

  The graph shown in FIG. 5 differs from the graph shown in FIG. 3 in the paper feeding speed when the header 105 is manufactured instead of manufacturing the bag 5, but there is no change in other points. Therefore, for the manufacture of the four continuous bags 101, 102, 103, 104, the description overlapping with the description based on FIG. 3 is omitted. When the horizontal seal of the bag 4 is completed, the horizontal sealer 5 is retracted from the packaging material. Thereafter, the header manufacturing cycle is started, and the paper feed speed is the same as when the horizontal sealer 5 starts rising. Deceleration is started from the paper feed speed Vs. In this example, after the speed is reduced to zero, the speed is increased and when the paper is fed by the length of the header 105, the paper feeding speed returns to the paper feeding speed Vs at the time of horizontal sealing. During this time, the operations of the horizontal sealer 5 in the vertical direction and the opening / closing direction are the same as those shown in FIG. While the packaging material is fed at the paper feed speed Vs at the time of transverse sealing, the transverse sealing is performed.

  FIG. 6 shows the relationship with various marks attached to the packaging material by printing or the like when manufacturing a quadruple packaging bag with a header. The arrow indicates the packaging material feed direction. The strip-shaped packaging material (a) shown in the leftmost part of FIG. 6 is an example of a packaging material on which both a header mark and a bag registration mark are attached. A registration mark 107 is attached to each position corresponding to the rear edge of the bag 1 to the bag 4 in the feed direction, and a header mark 108 is also attached to each position corresponding to the rear edge of the header in the feed direction. (Each mark is given a symbol as a representative). The band-shaped packaging material (b) is an example of a packaging material to which the header mark is attached but the registration marks of the bags 1 to 4 are not attached. A header mark 108 is attached only at a position corresponding to the rear edge of the header 105 in the feed direction. Furthermore, the strip-shaped packaging material (c) is an example of the packaging material to which the registration marks of the bags 1 to 4 are attached but the header mark is not attached. The registration mark 107 is attached only to the position corresponding to the rear end edge of the bag 1 to the bag 4 in the feeding direction, but the header mark is not attached to the position corresponding to the rear end edge of the header 105 in the feeding direction. The strip-shaped packaging material (d) shown on the right is an example of a packaging material in which neither the header mark nor the registration marks of the bags 1 to 4 are attached. Each mark can be used for detection of the feed amount of the packaging material. In the case of the strip-shaped packaging material (d), since the information on the feed amount cannot be obtained from the packaging material, the feed amount is detected by the paper feed mechanism.

  7-9 is a figure which shows the Example in the case of manufacture of the quadruple packaging bag with a header from which bag length differs, FIG. 7 is an external view, figure of a quadruple packaging bag with a header from which bag length differs 8 shows the film feed (paper feed) speed, the position and speed of the up and down movement of the horizontal sealer, and the time change of the position and speed of the opening and closing operation when manufacturing the four-pack wrapping bags with headers shown in FIG. FIG. 9 is an explanatory diagram showing how the packaging material is fed according to the presence / absence of a header mark and a registration mark.

  As shown in FIG. 7, the header-equipped quadruple packaging bag 200 having different bag lengths includes four continuous bags 201, 202, 203, 204 and a header 205 following the bag 204. The bag length L2 of the bag 201 and the bag 203 is set to be shorter than the bag length L1 of the bag 202 and the bag 204. 4 for the horizontal seal portions 201a, 201b and 202a, 202b and 203a, 203b and 204a, 204b and 205a, 205b, the perforation 210, the suspension hole 205c, etc. with the same bag length shown in FIG. Since it is equivalent to the case of the packaging bag 100, the code | symbol is shown and matched with the 200 series, The description which overlaps is abbreviate | omitted.

Compared with the graph shown in FIG. 5, the graph shown in FIG. 8 has a paper feed speed for manufacturing bags 1 to 4 and a paper feed speed Vf 2 for manufacturing bags 1 and 3. 2 and the bag 4 are manufactured, there is no change including the feed speed of the packaging material when the header 205 is manufactured, except that the paper feed speed Vf 1 is faster than the paper feed speed Vf 2 . Therefore, for the manufacture of the four continuous bags 201, 202, 203, 204 and the header 205, the description overlapping with the description based on FIGS. 3 and 5 is omitted. The position and speed of the horizontal sealer 5 in the vertical direction and the position and speed in the opening and closing direction are the same pattern regardless of the bag length, and are not changed. Further, the same horizontal seal period Ts is secured as a period during which the same horizontal sealer 5 pressurizes and heats the packaging material. The paper feed speed at which the packaging material is sent when the horizontal sealer 5 is not closed is changed according to the length of the bag, and the length of the bag can be increased as the speed is increased.

  FIG. 9 shows the relationship with various marks that are attached to the packaging material by printing or the like when manufacturing quadruple packaging bags with headers having different bag lengths. The arrow indicates the packaging material feed direction. The registration mark 207 and the header mark 208 are attached when both marks are present (FIG. 9A) and when only one mark is present (FIGS. 9B and 9C). ) And in the case where both marks are not present (FIG. 9D), except for the case where the mark is attached and the position is changed according to the length of the bag (the same as the rear edge in the bag feeding direction). Since there is no difference from the embodiment shown in FIG.

10 shows a paper feed control (FIG. 10 (a)) used for manufacturing a continuous packaging bag with a header according to the present invention and a paper feed control (FIG. 10 (a)) used for manufacturing a continuous packaging bag described in Patent Document 3. It is a graph explaining the comparison with FIG.10 (d)). In the paper feed control of the packaging material used in the manufacture of the continuous packaging bag with a header according to the present invention, the feeding direction of the packaging material while the horizontal sealer sandwiches the packaging material in order to obtain the necessary sealing performance according to the type of the packaging material The horizontal seal period Ts for moving to is set. Here, it is assumed that it is necessary to increase the lateral sealing period Ts for some technical reason such as a change in the type of packaging material. In this case, since the stroke (distance) when the horizontal sealer of the continuous wrapping machine descends while sealing the wrapping material is determined by the wrapping machine, the feeding speed is shown by a one-dot chain line in FIG. The horizontal sealing period Ts ′ corresponding to the packaging speed of the continuous packaging machine and longer than the horizontal sealing period Ts previously set in one packaging cycle for manufacturing one bag package is set. At Ts ′, the paper feed speed is set to the reduced speed Vs ′ based on the length of the period, and the necessary length of the packaging material is fed within the remaining period of one packaging cycle, that is, the paper feed By increasing the speed, it is possible to cope with without changing the sealing conditions such as the temperature and pressure of the horizontal seal and without changing the packaging speed (the number of packaging bags manufactured per unit time). The feeding speed of the packaging material during the horizontal sealing period Ts ′ and other periods can be easily dealt with by speed control in the servo motor.

  FIG. 10B is a graph showing the temporal change in the vertical speed of the horizontal sealer. In accordance with the long horizontal seal period Ts ′, as indicated by the alternate long and short dash line, the paper seal speed is controlled. Thus, it can be seen that the lowering speed of the horizontal sealer is reduced to the same speed as the paper feed speed Vs ′, and speed control is performed to increase the rising speed of the horizontal sealer after the end of the horizontal sealing period Ts ′. Further, FIG. 10 (c) shows a time change of the vertical position of the horizontal sealer as a graph. The horizontal sealer reaches the uppermost position early to prepare for the seal according to the long horizontal seal period Ts ′, and then a long horizontal seal period Ts ′ is secured when the horizontal sealer descends. .

  On the other hand, in the paper feed control as described in Patent Document 3, the horizontal seal period is determined corresponding to the longest packaging bag, and the packaging is performed at the paper feed speed determined according to the horizontal seal period. Since the speed of the horizontal sealer and the paper feed speed of the packaging material during the entire period of the cycle are all determined, if the horizontal sealing period becomes longer (period Ts'), the ratio of the horizontal sealing period to the traveling period for one packaging bag is set. In order to keep it constant, the feeding speed of the packaging material sent for one packaging bag must be reduced. Accordingly, as shown in FIG. 10 (d) as a comparative example, the packaging material feed speed is set to a low speed throughout the graph (the slow feed speed is indicated by a one-dot chain line), and the packaging speed decreases. As a result, it is difficult to obtain a flexible packaging operation with respect to horizontal sealing and paper feeding. In order to avoid such an influence, it is necessary to change the sealing conditions such as the sealing temperature and the sealing pressure, and it is necessary to take a complicated countermeasure. On the other hand, in the paper feed control according to the present invention, it is not necessary to change the sealing condition as described above, and the paper feed control can be easily performed by the speed control by the servo motor.

  The paper feed control in the continuous wrapping machine according to the present invention has been described above. However, the present invention relates to the paper feed in the continuous wrapping machine that manufactures a bag package containing a package in a bag formed from a continuous cylindrical packaging material. It goes without saying that the present invention can be implemented as a control method and apparatus, and also as a continuous packaging machine that performs paper feed control of packaging materials.

DESCRIPTION OF SYMBOLS 1a, 1b Vertical type bag making filling packaging machine 1c Horizontal type bag making packaging machine 2 Filling cylinder 3,3 'Vertical sealing device 4,4 Paper feeding device 5,5 Horizontal sealing device (horizontal sealer) 6 Hopper 7 Servo motor for paper feeding DESCRIPTION OF SYMBOLS 9 Former 10 Paper feed control apparatus 11 Control means 12 Central control part 13 Paper feed control part 14 Horizontal sealer control part 15 Weighing control part 16 Memory | storage part 20 Paper feed part 21 Mark detector 22 Length measuring device 23 Film feed servomotor 25 Mark Detection signal 26 Feed length signal 27 Motor control signal 30 Horizontal sealer 31 Horizontal sealer vertical servo motor 32 Horizontal sealer open / close servo motor 35 Vertical motion control signal 36 Open / close control signal 40 Weighing device 45 Drop request signal 46 Discharge completion signal 50 Input means 60, 70 Original roll portion 61, 71 Guide rollers 72, 74 Paper feed roller 73 Vertical seal roller 75 Horizontal seal 77, paper feeder servo motor 79 former 100; 200 quadruple packaging bags with headers 101, 102, 103, 104; 201, 202, 203, 204 bags 101a, 101b, 102a, 102b, 103a, 103b, 104a, 104b 105a, 105b Lateral seal portions 201a, 201b, 202a, 202b, 203a, 203b, 204a, 204b, 205a, 205b Lateral seal portions 105c, 205c Hanging holes 105, 205 Header 107 Registration mark 108 Header mark Fw Band-shaped packaging material Ft Cylindrical packaging material A, B Package P, P 'Bag package Ts, Ts' Horizontal sealing period Vs, Vs' Paper feed speed

Claims (8)

A package is accommodated in a bag formed sequentially from a continuous packaging material, and a lateral seal is applied to the packaging material while a horizontal sealer moves in the feeding direction of the packaging material while sandwiching the packaging material. In continuous packaging machines that produce continuously,
The horizontal seal corresponding to the packaging speed of the continuous packaging machine and changing the horizontal seal period for applying the horizontal seal in one packaging cycle for producing one bag package, based on the horizontal seal period. During the one cycle without changing the packaging speed of the continuous packaging machine, by determining the paper feeding speed at which the packaging material is fed during the period and changing the paper feeding speed within the remaining time in the one cycle A paper feed control method in a continuous wrapping machine, characterized in that a paper feed amount is ensured. A package is accommodated in a bag formed sequentially from a continuous packaging material, and a lateral seal is applied to the packaging material while a horizontal sealer moves in the feeding direction of the packaging material while sandwiching the packaging material. In continuous packaging machines that produce continuously,
A horizontal seal control unit for controlling the horizontal seal period according to a change in the horizontal seal period for applying the horizontal seal in one packaging cycle corresponding to the packaging speed of the continuous packaging machine and manufacturing one bag package; Determining the paper feeding speed at which the packaging material is fed during the horizontal sealing period with reference to the horizontal sealing period , and changing the paper feeding speed within the remaining time in the one cycle, thereby the continuous packaging machine A paper feed control device in a continuous packaging machine, comprising: a paper feed control unit that secures a paper feed amount in one cycle without changing the packaging speed . A package is accommodated in a bag formed sequentially from a continuous packaging material, and a lateral seal is applied to the packaging material while a horizontal sealer moves in the feeding direction of the packaging material while sandwiching the packaging material. In continuous packaging machines that produce continuously,
The horizontal seal corresponding to the packaging speed of the continuous packaging machine and changing the horizontal seal period for applying the horizontal seal in one packaging cycle for producing one bag package, based on the horizontal seal period. During the one cycle without changing the packaging speed of the continuous packaging machine, by determining the paper feeding speed at which the packaging material is fed during the period and changing the paper feeding speed within the remaining time in the one cycle A continuous wrapping machine characterized by securing a paper feed amount. Defined the transverse seal applied said transverse sealer has a stroke that moves is defined in the feed direction of the packaging material, the speed pattern of the paper feed speed is based on said stroke and said transverse sealing period to said packaging material The continuous packaging machine according to claim 3.   The continuous packaging bag according to claim 3 or 4, wherein the packaging bag is a continuous packaging bag in which a plurality of bags having a single bag length or a plurality of bag lengths are continuous in the feeding direction of the packaging material. Packaging machine.   The continuous packaging machine according to claim 5, wherein the continuous packaging bag is a continuous packaging bag with a header in which a header is formed from the packaging material at an end portion.   The continuous packaging machine according to any one of claims 3 to 6, wherein the drive source for feeding the packaging material is a dedicated servo motor.   The said continuous packaging machine is a vertical type or horizontal type bag making filling packaging machine provided with the cylinder making machine which shape | molds the fed strip | belt-shaped packaging material to a cylindrical packaging material, Any one of Claims 3-7 A continuous packaging machine according to claim 1.

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