MXPA97010322A - Apparatus to make bags that has automatic accessor placement - Google Patents

Abstract

The present invention relates to a bag making apparatus, comprising an accessory bed defining a web flow path along which a web of bagging material moves, a band stretching activation mechanism for stretching the strip along the accessory bed, a plurality of bagging accessories movably mounted on the accessory bed along the web flow path for the respective operational association with the bags being made; of adjustment to fit such adjustments along the accessory bed, the adjustment means being configured to effect the translational movement of co-union of the accessories in the accessory bed along the band flow path , while the accessories are placed proportionally between

Description

APPARATUS TO MAKE BAGS THAT HAS AUTOMATIC ACCESSORIES PLACEMENT TECHNICAL FIELD The present invention relates generally to a bag making machine, which handles a web of film material, from which the bags are made in an end-to-end relationship, and more particularly to a bag making apparatus which it has a plurality of accessories on it movably placeable, with a provision provided to automatically and proportionately place the accessories in relation to each other for the high-speed manufacture of bags.

BACKGROUND OF THE INVENTION In a typical bag making process, a substantially continuous web of film material such as plastic, paper, is driven through a bag making apparatus so that the web is subjected to a series of procedures necessary to convert the web to a plurality of bags arranged in an end-to-end relationship. Bag making machines of this type can be configured for intermittent operation, i.e. the intermittent advance of the web of the film material as it becomes a series of bags. The operation of machines for making intermittent bags (ie, counters, flat band, bottom seal machinery, etc.), at high forming speeds and the desire to tolerate variable print repetition lengths on the web, has resulted in efforts to improve the efficiency and accuracy of the operation. In particular, it is desirable that various machine accessories, such as those to effect punching of the counters, cutting of handle, etc. , be placed proportionally to each other together with the machine alternation to adapt to a change in the repetition length of printing, as it may be the result of changes of tension in the area of the accessory bed of the machine or variations in the printing process and the subsequent rewinding of the film band. When the printed bag material operates in register, a photoelectric cell of the machine carries the registration mark (printing) provided on each of the bags that is being made. Through the automatic controls of the machine, the stretching length is adjusted in such a way that the registration mark remains in register with the photoelectric cell. Since the various procedures for making bags are referenced with respect to this photoelectric cell, the photoelectric cell is sometimes considered only as the "fixed" point of the procedure, i.e. fixed in relation to the registration mark (but not necessarily fixed) in relation to the connection rail of the device). If the repetition length changes, ie due to the voltage changes or printing variations mentioned above, all the accessories in the connection area (both upstream and downstream from the photocell) need to return to be placed to anticipate the repetition of variable printing, or some other provision provided to accumulate the web material, so that it is properly placed below the accessory. Since the various arrangements are known to facilitate such placement, such arrangements have not provided the degree of accuracy and / or versatility, which is desired to facilitate the operation of the machine at high speed. By way of example, it is known that a simultaneous repositioning of several accessories can be carried out, which are mechanically fixed to each other, or which are collectively mounted on a common assembly. In such "assembled assembly" arrangements, repositioning to adapt the change of the machine results in only one accessory being accurately and correctly positioned, typically the accessory that is closest to the self-correcting scanner of the adjustment system. The other accessories, of course, they are repositioned with an error, which becomes greater depending on how far each accessory is from that accessory that has been accurately and correctly placed. A self-correcting arrangement for bagging accessories that results in the use of a "combined assembly" has included on it a motor-driven gear. The gear is in a meshed coupling with a gear holder, which extends along the connection bed of the machine whereby the operation of the motor effects the upstream and downstream movement of the combined assembly. In this arrangement, two photoelectric cells are mounted on one of the accessories, with the photoelectric cells displaced, (such as by 3 mm), in the direction of the film strip. The signals of these photoelectric cells are directed to a programmable logic controller, which in turn operates the adjustment motor, the "combined assembly" and the photoelectric cells, are placed in such a way that under normal operating conditions a photoelectric cell is on the registration mark, and the other photoelectric cell is after the registration mark. During the arrest or interruption of the band (ie, during sealing and for a short period, before and after), the autocorrect system is armed or activated. Depending on the relative placement of the assembly, and the relationship of the photoelectric cells to the registration mark, the autocorrect system will move the assembly either upstream or downstream, or will not effect the movement. Since this arrangement facilitates automatic correction of the accessories, this arrangement has the disadvantages of having a dead space of 3mm (where no proportional adjustment is made) and still has the deficiency that only one of the accessories is accurate and correctly placed. The other accessories on the "combined assembly" will have an error proportional to their distance from the exact and correct placement of one of the accessories. In another previously known adjustment arrangement, a three-roll vertical S-shaped envelope is placed on the connecting bed of the bag making machine. For example, this three roll arrangement can be mounted immediately upstream of the so-called central bending joint former. In this arrangement, the middle S-shaped wrapping roll can be moved up and down through an electric motor. The self-correcting arrangement includes a similar photoelectric cell mounted on the frame of the machine or the connecting rail upstream of the S-shaped wrapping rollers. The signal of this photoelectric cell is fed to a guidance system, which activates the motor on the S-shape wrapping roll medium. During the arrest of the band (during sealing and for a period before and after) the self-correction system is activated. The S-shaped wrapping roll is positioned in such a way that under normal operating conditions, the photoelectric cell is on an edge of the registration mark. Depending on the signal generated by the photoelectric cell, the S-shaped wrapping roller moves up or down, to accumulate or release the band material, until the marking of the photocell is placed on the edge of the photocell. registration mark. However, as in other adjustment arrangements, this system has the disadvantage that only one accessory is accurately and correctly positioned, while the other accessories of the bag making machine will be placed with an error, which is proportional to its distance of the exact accessory and correctly placed. In another previously known adjustment arrangement, a "combined assembly" having a plurality of accessories thereon is movably positioned and on the accessory bed of the machine. A motor-driven gear is provided over the combined assembly, the gear in a meshed coupling with a gear holder extending along the connection bed. The operation of the motor effects the movement of the combined assembly upstream or downstream of the connection bed. One of the mounting accessories, a similar photoelectric cell is mounted. The signal of this photoelectric cell is fed to a guidance system, which activates the motor in the combined assembly. The combined assembly (and the photoelectric cell on it) are placed in such a way that during normal operating conditions, the photoelectric cell is on an edge of the registration mark. During the film stop (during sealing, and for a period before and after), the autocorrect system is activated. Depending on the signals of the photocell, the autocorrect arrangement will move the combined assembly upstream, downstream, or will not move it. As in the systems previously described, this arrangement only results in one of the accessories on the assembly being accurately and correctly positioned. Again, other accessories in the combined assembly will be placed with an error proportional to their distance from the exact and correctly placed accessory. The present invention is directed to a bag making apparatus having an automatic adjustment system for effecting the correct relative placement of bagging accessories to facilitate the correct placement of various accessories depending on the changes in the length of repetition of printing, facilitating thus the exact operation at high speed, while obtaining smaller variations in the resulting bags.

BRIEF DESCRIPTION OF THE NONDION A bagging apparatus modeling the principles of the present invention is illustrated as an intermittent bag making machine, which can be configured for various types of sealing (i.e., bottom sealing, mixed sealing, side welding, etc.). , and can be configured to allow the bags to be "picked up" through any of the various known techniques (i.e., counter, roller, needle sharpening, flat web stacking, etc.). The apparatus includes a connecting bed that defines a web flow path along which a web of bagging material moves. A stretching activation mechanism is provided to stretch the web of bagging material along the connection bed. In accordance with the present invention, the apparatus includes a plurality of bagging accessories, which are movably mounted on the connecting bed along the web flow path. In order to facilitate adjustments in the stretchness of the band, the apparatus of the present invention includes a self-correcting arrangement through which the various accessories of the machine are placed proportionally relative to each other. as they are automatically placed along the bandwidth trajectory of the apparatus. This provides an exact desirable relative placement of the connections, thus facilitating the high-speed operation of the machine, and the changes in repetition length of compression that result from voltage changes are adapted, or variations of pressure. Since this is contemplated, the adjustment will be made during the stop or the period of interruption of the band, this is within the scope of the present invention to effect the adjustment during the stretching of the band after the measurement of the error. during stops or interruptions of the band before stretching the band. In accordance with the illustrated embodiment, the apparatus includes an automatic adjustment arrangement for tightly fitting a plurality of bagging accessories along the connection bed of the apparatus. The adjustment arrangement is configured to effect the union, translational movement of the fittings on the connecting bed along the web flow path while the fittings are positioned proportionally to each other. Although this contemplates that the adjustment arrangement may be provided in the form of servo-drive motors or the like, respectively mounted on the accessories of the apparatus, the illustrated embodiment includes a desirably direct drive mechanism for effecting translational co-union movement of the accessories. . However, it is to be understood that it is within the scope of the present invention to provide an arrangement for effecting the proportional relative positioning of the fittings by another drive mechanism specifically illustrated differently. In particular, the activation includes at least one pivotally mounted lever, which extends generally along the web flow path, preferably behind the accessories of the apparatus, for the operative connection with each of the accessories , the actuating mechanism of the adjustment arrangement includes an actuator connected to the pivotally mounted lever for pivoting the lever about a fulcrum, thereby effecting the co-union movement driven from the accessories of the accessory bed. Up to this point, the activation mechanism includes a plurality of gear supports respectively mounted on the fittings, with each of the gear supports in an operative coupling with the pivotally mounted lever, so that the pivotal movement of the lever by the The associated actuator moves each of the gear supports proportionally towards the space of the gear support from the fulcrum of the lever. In the preferred way, the activation mechanism also includes a gear activation on each of the accessories to effect the translational movement thereof on the accessory bed along the web flow path. The gear activation of each accessory is in activated engagement with respect to one of the gear supports, and in turn is in a coupling engaged with an elongated gear holder, which extends along the length of the accessory bed . The adjustment arrangement of the present invention includes a scanner placed on one of the accessories or on a separate assembly, to generate a signal corresponding to the relative position for a registration mark, during the arrest of the band, provided on each bag what is being done The adjustment mechanism also includes automatic controls that operatively connect the scanner to the actuator, which effects the pivotal movement of the lever of the system. Through this arrangement, the operation of the actuator is effected in response to the signal generated by the scanner. In a first illustrated embodiment, the apparatus herein includes a photoelectric cell fixedly movable relative to the accessory bed (such as in a fixed position of the accessory bed, or on the apparatus frame) to generate a signal in response to a Registration mark provided on each of the bags that is being made. When the printing material works in register, the photoelectric cell directs the registration mark on each of the bags that is being made with the controls of the apparatus adjusting the stretch length, so that the mark remains in register with the photoelectric cell . The pivotally mounted lever of the adjustment arrangement has a fixed fulcrum relative to the photoelectric cell, with the moving accessories of the apparatus being thus moved relative to the photoelectric cell. In an alternative embodiment, the fulcrum of the pivotally mounted lever is mounted in a fixed relationship to, and in a vertical alignment with, a seal mechanism of the apparatus. In this alternative mode, the photoelectric cell, which perceives the registration marks on the bags that are being made, is mounted on a mobile accessory of the system, and in this way is proportionately placeable, together with the remaining accessories in relation to the fulcrum aligned with the device seal mechanism. Other aspects and advantages of the present invention will be readily apparent from the following detailed description, the accompanying drawings and the appended claims.

BRIEF DESCRIPTION OF THE DIAMETERS FIGURE 1 is a diagrammatic view of an intermittent operation bag making apparatus of the type that can be configured to modalize the principles of the present invention; FI GU RA 2 is a diagrammatic top plan view of the bag making apparatus shown in FIGURE 1; FIGURES 3A and 3B are diagrammatic views illustrating registration marks (printing), provided on a band of bagging material, and illustrating changes in the printing length of the bags being formed; FIGURE 4 is a diagrammatic view similar to FIGURE 1 illustrating an automatic fitting adjustment arrangement modeling the principles of the present invention; FIGURE 5 is a diagrammatic view of a control system of the present invention; FIGURE 6 is a diagrammatic view illustrating an alternative embodiment of the present invention; and FIGURE 7 is a diagrammatic view illustrating a modified embodiment of the present invention.

DETAILED DESCRIPTION OF THE PRESENT INVENTION Since the present invention is susceptible to modality in various forms, the drawings are shown and from now on a currently preferred embodiment will be described, with the understanding that the present description is considered as an illustration thereof, and is not intended to limit the invention to the specific embodiment illustrated. The present invention is directed to a bag making apparatus, designated 10, which is configured for intermittent operation as a web W of bag making material is stretched through the apparatus to make a series of bags in a relationship from end to end. As will be described, the bag making apparatus 10 includes a plurality of accessories, which are placed in a respective operative association with the web W to perform various manufacturing processes on the bags being made. The present invention contemplates that the apparatus 10 includes a self-correcting positioning system for automatically adjusting the relative positions of the accessories depending on changes in the repetition length of the band of the bagging material, which can result in from the changes of tension or variations of impression, facilitating like this the operation at high exact speed. With reference to FI GU RA 1, a bagging apparatus 10 includes a bed of attachment 1 2, generally elongated, which defines a web flow path along which the web W of the material moves. bag. A band stretching activation mechanism, illustrated in the form of a pair of cooperating stretching rollers 14, and an associated servomotor 16, performs intermittent stretching of the strip along the accessory bed 12. Suitable floating rollers and the like effect the desired tension and control of the band as it is intermittently stretched by the activation mechanism. A plurality of bagging accessories are movably mounted on the accessory bed 12 along the web flow path. As it was observed, each of these accessories is placed for the respective association with bags that are being made, and in this way they can take several forms. In the illustrated embodiment, the photoelectric cell 20 is mounted on an accessory 22, such an accessory can be "fixed" with respect to the accessory bed, thus providing the desired reference point with respect to which the other accessories are placed. In an alternative embodiment, the accessory carried by the photoelectric cell 20 can also be automatically and adjustably placed. When the printed material operates in register, the photoelectric cell directs the registration marks (printing) on the bags that are being made, with the automatic controls of the apparatus 10 adjusting the stretch length effected by the rollers 14, so that the brand remains in phase with the photoelectric cell. The movably mounted accessories 24 and 26 are further illustrated and can be configured to include the devices necessary to perform various procedures for making bags, such as the provision of counter punches 28, and a handle cutting unit 30. Each of the accessories are preferably provided with wheels, runners, slides, or the like to allow rolling or sliding movement of each accessory along one or more accessory rails of the associated accessory bed 12. An additional accessory 32 (see FIGURE 4) can be provided to carry an explorer and an automatic attachment positioning system of the present, as will be described, or the scanner can be mounted on one of the accessories such as 24, 26. The desired translational co-union movement of the accessories with respect to the accessory bed is effected by providing the adjustment arrangement of the present invention with a mechanical Activation anism, which effects the activated movement of the accessories along the bed of accessories. The activation mechanism includes at least one elongated gear support 34 mounted on the accessory bed 12, each of the accessories of the apparatus including an engagement gear 36 in respective meshed engagement with the gear support 34. It is preferred that provide a pair of gear supports 34 on the respective sides of the apparatus, each accessory including a pair of driving gears 36 in respective engagement with the pair of gear supports. Although it is preferred that each of the gears be provided with the same pitch diameter, it is within the scope of the present invention that the pitch diameter of the gears be slightly different. The activation mechanism of the self-correction adjustment system of the present invention also includes a plurality of vertically mounted gear supports 38, which are mounted respectively on each of the accessories. Each of the accessories is provided with a slider 40 to adapt to the vertical sliding movement of one of the respective gear supports 38. According to the illustrated embodiment, each of the gear supports 38 is in gear engagement with one of the respective activation gears 36, whereby the vertical movement of each gear holder 38 effects the movement of the accessory along the accessory bed through the rotation of the respective gears 36, and the movement activated in this way along the elongated gear support 34. As will be recognized the present invention can be configured so that each of the accessories includes two or more gears commonly mounted on an arrow, with a gear engaging a gear support 38, and the another gear engaging the gear holder 34. In other words, it is not necessary that the same gear 36 be in coupling t as in the gear holder 38, as with the gear holder 34, although such an arrangement is currently preferred for simplicity and exact placement of the accessories. As will be appreciated, the proportional adjustment of the accessories of the apparatus herein can be effected mechanically through gears and gear supports other than those illustrated. For example, a group of suitable linear flights can be provided on one or more pivotable lever arms of the illustrated activation mechanism. In order to effect the desired activation movement of the fittings along the accessory bed, the adjustment system herein includes a pivotally mounted lever arm 42, which extends generally along the flow path of the band for the operative connection with each one of the accessories. Lever arm 42 is pivotally moved about a fulcrum thereof through the operation of a suitable linear actuator 46 operatively connected to a free end of the lever (opposite its fulcrum end). As will be appreciated, the operation of the actuator 46 effects the pivoting of the lever around its fulcrum, thus effecting the co-union movement of the gear supports 38, and in this way the co-union movement of the accessories 24, 26 and 32 Each of the gear supports 38 is attached to the lever arm 42 through a respective sliding pivot 44, which allows the rotation of the gear holder with respect to the lever arm while allowing the linear movement of the support supports. gear along the lever arm.

The operation of the actuator 46 is effected through the provision of a scanner 48, mounted on one of the accessories (accessory 32 in the illustrated embodiment). By way of example, the scanner 48 can be provided with a scanning width of 8 mm. It is within the scope of the present invention that the scanner 48 can be placed upstream or downstream with respect to the fulcrum of the lever arm 42. The placement of the scanner 48 on one of the accessories of the apparatus is necessary for it to have the function of union (handle cut for example) in the correct position in the bag and the scanner placed in a registration or printing mark. The signal generated by the scanner 48 is fed to a system controller (FIGURE 5) which is operatively connected to the linear actuator 46 and acts to activate the actuator. The actuator is connected to the frame of the apparatus, or to the connecting bed 12, on one end thereof and to the lever arm 42 on the other end thereof. Only during band arrest or interruption (seal plus one time before and one time after) is the system controller armed or activated. This information is given through the main computer of the device (FIGURE 5). During this time interval or during the subsequent stretching of the band, the controller can move the actuator, depending on the input it has from the system scanner 48. For example, if the scanner is downstream of the printing mark, the actuator 22 will retract. This will rotate the lever arm 42 in an anti-clockwise direction. The movement of the lever arm will generate a downward movement of the gear supports 38. The downward movement of the gear supports, in turn, will generate a counterclockwise movement of the gears 36. As a result, the accessories (including Explorer 48), will move upstream. This translational movement or displacement will continue until the browser is at the record mark again (if it arrives there before the end of the band stop window). Due to the lever action, each accessory, between, or even upstream, if applicable, of the scanner 48 and the fulcrum of the lever 42 will be correctly and proportionally positioned. FIGURES 3A and 3B illustrate the webs of the bagging material and the registration (or printing) marks R provided along the same. The registration marks can of course be part of the printing design on each bag. FIGURE 3A shows the band W and several of the registration marks R, this illustration also shows the distance D between each printing mark (corresponding to the repetition length of each printed bag that is being formed). In contrast, FIGURE 3B illustrates where the repeat print length D has changed from D to D more? This change of repeat printing may result from changes in tension in the accessory bed area or variations in printing. The shaded reference line R in FIGS. 3A and 3B is a reference line illustrating where the recording photocell 20 of the apparatus is positioned, and providing in its first mode the only "fixed" point in the accessory area. In FIGURE 3A, the upstream or downstream distance between the two register marks R changes to dimension D, whereas in FIGURE 3B, the upstream or downstream distance between the two marks changes with D plus?. An accessory of the apparatus that works on a bag that is a register mark upstream, needs a correction of?. An accessory that works on two bags upstream needs a proportional adjustment or correction of 2 ?, etc. Referring again to FIGURE 4, the action of the lever 42 provides the proportional correction of the various accessories of the bag making apparatus. Due to the action of the lever, each accessory (or even more upstream, if applicable), the scanner carrying the accessory 48 and the fulcrum of the lever will obtain a proportional correction, depending on their relative position along the length of the lever. As an example, if an attachment of the apparatus is placed in two times D of the fulcrum of the lever 42, and the scanner 48 is placed seven times D of the fulcrum, the aforementioned accessory will only receive a correction of two-seven of the adjustment effected by the accessory carried by the explorer. A variation of the present invention is illustrated in FIGURE 6, wherein the photoelectric cell 20 of the system is mounted on its own mobile accessory 22 ', this accessory 22' is proportionally moved together with the other accessories of the autocorrection system. In this variation, the photoelectric cell 20 can be mounted on one of the accessories of the apparatus, instead of its own accessory, as illustrated by clarity. In this arrangement, the fulcrum of the lever arm 42 is placed in vertical alignment and is fixed with respect to the seal mechanism of the bagging apparatus. An illustrative seal mechanism is illustrated in FIGURE 6, including a seal bar 50 and a seal bar 52. As illustrated, the fulcrum of the lever arm is approximately in the vertical center of the sealing mechanism. Through this arrangement, the junction of the photoelectric cell 22P is connected to the automatic adjustment system and will receive a proportional amount of correction, depending on its location along the lever arm 42 and the accessory bed 12.

As noted, it is within the scope of the present invention, that the movement of the accessories of the apparatus herein may be through another, different illustrated actuator. For example, each movable accessory can be provided with an actuating servomotor, as illustrated at 142 in FIGURE 4, together with the accessories 24, 26. Each servo motor can be configured to activate a single drive gear 36, or arranged to effect otherwise the movement of the accessory along the accessory bed, with the operation of the servomotors effected through the automatic controls of the autocorrection system. Since the previously described configurations of the present invention effect the desired relative proportional positioning of the accessory for making bags and the associated band of the material effecting the movement of the accessories, it is possible to keep the accessories in relatively fixed positions, and to accumulate proportionally the material of Band between the accessories to achieve the desired relative placement. In such an alternative arrangement, a number of three-roll S-wrapping mechanisms, as illustrated in the line faded at 236 in FIGURE 6, may be in association with the fixedly attached fittings. One of the wrapping mechanisms S can be provided between each pair of accessories for which relative adjustment in the position of the accessories and the bag band is desired. In such an arrangement, a pivotable lever arm, such as 42, can then be used to move the middle roll of each casing S vertically up and down to accumulate or release web. Since this arrangement can achieve the desired degree of accuracy, the inertia of the various rollers, such as a system, can impact its application in the present type of stopper to make intermittent movement bags. A modified embodiment of the self-correcting system of the present invention is illustrated in FIGURE 7. The system is illustrated in association with a vertical, mobile three-roll S-shaped casing 100 placed on the accessory rail 12. This type of arrangement, for example, involves a center fold joint former. In such an arrangement, use of the self-correcting system herein in the previously described manner could result in the fittings being placed upstream of the sheath S 100 being placed incorrectly due to the band accumulated in the sheath S 100. FIGURE 7 illustrates a modified embodiment of the present invention to overcome the above problem. The three-roll S-shaped casing is placed upstream of the S-shaped envelope 1 00. The upper roll 102 of the casing S can be moved, preferably up and down (ie, vertically) through of a linear actuator 1 03. In addition, upstream a scanner 104 registers the registration mark of registration R on the band W during the stopping or interruption of the band. Depending on the information obtained by the scanner 1 04, the upper rod 102 moves up or down, for a phase with the registration mark made to the scanner. If a second autocorrection system is used, as described above, (i ncluding the lever arm 105, scanner 107 and an actuator 1 06 to move the lever arm in response to the signals from the scanner 107), with the fulcrum of the lever arm approximately in vertical alignment with the scanner 104, all accessories upstream of the S 100 wrapper will be positioned correctly. Although the present invention contemplates that the relative position of bagging accessories and the associated band of material can be closely proportional to what is practicable for highly possible accuracy, it should be understood that a system that modalizes the present invention can effect the relative placement, which is substantially proportional, by which it can vary by a small degree of true proportional placement. From the foregoing it will be noted that various modifications and variations can be made without departing from the true spirit and scope of the novel concept of the present invention. It should be understood that there is no limitation with respect to the specific embodiment illustrated herein that is intended or may be inferred. The description is intended to cover, through the appended claims, all these modifications so that they fall within the scope of the claims.

Claims (20)

1. CLAIMING IS 1 . A bag making apparatus, comprising: an accessory bed defining a web flow path along which a band of bagging material is moved; a band stretching activation mechanism for stretching the strip along the accessory bed; a plurality of accessories for making bags movably mounted on the accessory bed along the web flow path for the respective operative association with the bags being made; and adjusting means for fitting such adjustments along the accessor bed, the adjustment means being configured to effect the translational movement of co-union of the accessories in the accessory bed along the band flow path, while the accessories are placed proportionally to each other.
2. 2. The bag making apparatus according to claim 1, further characterized in that the adjustment means comprise at least one pivotally mounted lever extending generally along the web flow path for the operative connection with each of the accessories, the adjustment means further including actuating means for pivoting the lever about a fulcrum to thereby effect the activated co-union movement of the fittings in the accessory bed.
3. 3. The bag making apparatus according to claim 2, further characterized in that the adjustment means further include a plurality of gear supports respectively mounted on the fittings each in operative engagement with the pivotally mounted lever, so that the pivotal movement of the lever through the actuating means moves each of the gear supports proportionally to the space of each gear holder from a fulcrum of the pivotally mounted lever.
4. 4. The bag making device according to claim 3, further characterized in that the attachment adjusting means further includes a gear activator on each of the fittings to be in activation engagement with each of the respective gear supports of the attachment. to effect the translational movement of the accessory.
5. 5. The apparatus for making bags according to claim 1, further characterized in that the adjusting means includes a scanner to generate a signal corresponding to the relative position of a registration mark provided on each bag that is being made, the means of further adjusting control means operatively connecting the scanner to the actuator means to effect the operation of the actuator means in response to the signal generated by the scanner.
6. 6. The apparatus for making bags according to claim 2, further characterized in that the apparatus includes photoelectric cell means fixedly positionable on the accessory bed to generate a signal in response to a registration mark provided on each bag that is being made, the pivotally mounted lever having a fixed fulcrum relative to the photoelectric cell means.
7. 7. The bag making apparatus according to claim 2, characterized in that the apparatus includes sealing means placed downstream of the belt stretching activation mechanism, the pivotally mounted lever having a fixed fulcrum relative to the seal means in alignment vertical with them.
8. 8. The bag making apparatus according to claim 7, characterized in that the movably mounted accessories comprise photoelectric cell means for generating a signal in response to a registration mark provided on each bag that is being made.
9. 9. A bag making apparatus comprising: an accessory bed defining a web flow path along which a band of bags moves; a band stretching activation mechanism for stretching the strip along the bed of the accessory; a plurality of bagging accessories movably mounted on the accessory bed along the web flow path for the respective operational association with the bags being made; and adjustment means for fitting the adjustments along the accessory bed to adapt to changes in the repeat repetition length, where D corresponds to the first repeat repetition length and? corresponds to a change in the repetition length of printing, the adjustment means being configured to effect the translational movement of co-joining of the fittings in the accessory bed along the web flow path, while placing the accessories proportionally to each other, so that the space between the union and a reference point of the apparatus is equal to x (D +?) when the apparatus is adjusted.
10. 10. The bag making device according to claim 9, characterized in that the adjusting means includes a scanner to generate a signal corresponding to the relative position of a registration mark provided on each bag that is being made, the adjustment means also they include means for activating each of the fittings along the accessory bed in response to the signal generated by the scanner. eleven .
11. The bag making device according to claim 10, characterized in that the activation means comprise at least one pivotally mounted lever extending generally along the band flow path for the operative connection with each of the accessories, the Activation means further include actuator means for pivoting the lever about a fulcrum to thereby effect the activated co-union movement of the accessories of the accessory bed.
12. The bag making device according to claim 1, characterized in that the activation means furthermore provide a plurality of gear supports respectively mounted on the fittings each in operative engagement with the fully assembled pi lever. , so that the pivotal movement of the lever moves each of the gear supports proportionally to the space of the gear support from the fulcrum of the belly plate.
13. The bag-making apparatus according to claim 1, characterized in that the apparatus includes photoelectric cell means fixedly positionable on the accessory bed to generate a signal in response to a registration mark provided on each bag that is being made, the pivotally mounted lever having a fixed fulcrum relative to the photoelectric cell means.
14. 14. The apparatus for making bags according to claim 12, characterized in that the apparatus includes seal means placed downstream of the belt stretching activation mechanism, the pivotally mounted lever having a fixed fulcrum relative to the seal means in vertical adjustment with it, one of the mobile-mounted accessories containing photoelectric cell means for generating a signal in response to a registration mark provided on each bag that is being made.
15. 15. The apparatus for making bags according to claim 9, characterized in that the adjustment means comprise actuator actuator means provided on each plurality of accessories for making bags.
16. 16. A bag making apparatus comprising: an accessory bed defining a web flow path along which a band of the bagging material moves; a band stretching activation mechanism for stretching the band along the accessory bed; a plurality of accessories for making bags mounted on the accessory bed along the web flow path for the respective operational association with the bags being made; and adjusting means to adjust and adjust the adjustments in relation to the band of the material.
17. The bag-making apparatus according to claim 16, characterized in that the adjustment means comprise at least one pivotally mounted lever extending generally along the web flow path, the actuating means for pivoting the lever.
18. 18. The bag making apparatus according to claim 1 7, characterized in that the adjustment means comprise at least one S-shaped wrapping means operatively connected to the lever.
19. 19. The apparatus for making bags according to claim 16, characterized in that the adjustment means comprise servo-actuator means provided in each of the accessories to move the accessories relative to the accessory bed for the proportional placement of the accessories in relation to the band. of the material.
20. 20. The apparatus for making bags according to claim 1, characterized in that the adjusting means includes a scanner to generate a signal corresponding to the relative position of a registration mark provided on each bag that is being made, the adjustment means also they include control means operatively connecting the scanner to the actuator means to effect the operation of the actuator means responsive to the signal generated by the scanner.