JP3766965B2 - Bag making machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bag making machine that continuously forms, for example, postal envelopes.
[0002]
[Prior art]
In a bag making machine that forms this type of bag (envelope) or the like, roll-shaped continuous bag paper R is sequentially conveyed, and during this conveyance, the cut portion C is cut off as shown in FIG. The side folded portion B1 and the bottom folded portion B2 are formed, glued to the side folded portion B1, and folded from the folded line L1 and bonded together, and then cut from the cutting line L2 and folded from the bottom folded line L3. To form an envelope.
[0003]
The formed envelopes are aligned and discharged, and the number of manufactured sheets is counted by shifting the alignment position for every predetermined number, for example, 100 sheets.
At this time, as shown in FIG. 8, the envelope is aligned by the delivery drum Z located downstream of the apparatus and having the catching claw Z1, and the envelope is pushed laterally with respect to the alignment position by an unillustrated pushing mechanism when counting a predetermined number of times. It was.
Such a catching claw Z1 is assumed to be fixed with respect to the rotation axis direction of the delivery drum Z.
[0004]
[Problems to be solved by the invention]
However, when the envelope is kicked laterally by the push-out mechanism as described above, there is a problem that the side of the envelope kicked by the push-out mechanism has a kick mark, which may impair the appearance of the product. In addition, when the bag making speed is as high as about 600 sheets per minute, there is a limit to the operation response speed of the kicking-out portion and the accuracy of the envelope position setting by the operation, and the number of bag making per unit time When improvement was intended, there was a problem that it might reach a peak.
Furthermore, when the envelope is kicked from the side by the push-out mechanism when the predetermined number is counted, if the bag making speed becomes as high as about 600 sheets per minute, the pushed-out envelope is crushed and moved in the lateral direction of the alignment position. There was a problem that there was a possibility that the movement of.
[0005]
The present invention has been made in view of the above circumstances, and intends to achieve the following object.
(1) To provide a bag making machine with no kick marks.
(2) To increase the certainty in counting a predetermined number by moving the position of the envelope regardless of the bag making speed and paper quality.
(3) To improve workability.
[0006]
[Means for Solving the Problems]
In order to achieve the above-described object, the bag making machine according to the present invention is a bag making machine that continuously forms a bag body such as a postal envelope and makes a bag, and rotates the formed bag body. The delivery drum is conveyed to the upstream peripheral surface in the rotation direction, and is held and rotated by the holding means provided on the outer periphery of the delivery drum by the rotation of the delivery drum, to the downstream side in the rotation direction of the delivery drum In the bag making machine arranged to be arranged on the provided alignment table, the holding means of the delivery drum is provided with a slide portion that slides the bag body held by the holding means in the rotation axis direction of the delivery drum.
In the bag making machine, the holding means is provided with a suction hole for sucking the bag held by the holding means .
Further, the holding means is constituted by a clamping claw disposed on the delivery drum.
The holding means is provided with a notch substantially parallel to the rotation axis of the delivery drum, the notch has a suction surface substantially parallel to the tangential direction on the outer periphery of the delivery drum, and a slide portion is provided on the suction surface. The suction hole is opened in the slide portion.
The delivery drum has a pressure reducing means for sucking and fixing the bag body through the suction hole, and the bag body is aligned by releasing the fixation of the bag body near the alignment stand and ejecting gas from the suction hole. Pressure switching means including a pressurizing means is provided.
The slide part is mounted inside the notch so as to be slidable in the direction of the rotation axis of the delivery drum, and on its surface, a plurality of suction holes are provided that are penetrated substantially parallel to the radial direction of the delivery drum. The pressure switching means can be connected even when the slide portion slides.
A bracket is integrally connected to the slide portion on the side of the delivery drum and protrudes substantially parallel to the rotation axis of the delivery drum. A cam follower is rotatably attached to the tip of the bracket, and the cam follower is attached to the delivery drum. The slide portion is slid in the direction of the rotation axis of the delivery drum by abutting against a cam disposed on the side in the direction of the rotation axis.
The cam has a flat plate shape that is positioned substantially parallel to the side surface of the delivery drum, and the upper side of the cam is inclined toward the delivery drum from the upper side to the lower side, which is the rotation direction of the delivery drum for guiding the cam follower. An inclined portion is provided.
In the cam, the envelope is positioned at the delivery drum alignment position and the cam is not in contact with the cam follower, and the cam follower in contact with the cam presses the slide portion to the opposite side of the cam, so that the envelope moves from the delivery drum alignment position. A cam position setting unit is provided that can be switched between a state of being moved to the opposite side of the cam and abutting the cam on the cam follower.
Can be switched by a control unit (not shown).
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a bag making machine according to the present invention will be described with reference to the drawings.
1 to 6, reference numeral M is a bag making machine, R is bag paper, B is a bag (envelope), C is a cutting unit, 1 is a paper feeding unit, 2 is a printing unit, 3 is a drying unit, 4 is A cutter unit, 5 is a folding pasting unit, 6 is a cut bottom pasting unit, and 7 is a delivery unit.
[0008]
As shown in FIGS. 1 to 6, the bag making machine M has a paper feeding unit 1 that supplies continuous bag paper R in a roll shape, and the bag paper R has, for example, a zip code frame or a company name. A printing unit 2 that performs printing, a drying unit 3 that dries the bag paper R printed by the printing unit, and a cutter that cuts the cut part C from the bag paper R to form the side folding part B1 and the bottom folding part B2. Part 4, the side folding part B 1 is folded from the folding line L 1, and the folding and pasting processing part 5 is pasted and pasted together, and the folded bag paper R is cut from the cutting line L 2 and the bottom folding part B 2 is folded at the bottom It is assumed that it includes a cut-off bottom pasting portion 6 that wraps from the line L3 and pastes the bottom, and a delivery portion 7 that aligns the bottomed bag body (envelope) B and counts the number of manufactured products.
[0009]
As shown in FIG. 1, the paper feed unit 1 is located at the uppermost stream of the bag making machine M and continuously supplies roll-shaped bag paper R having a predetermined width dimension. The width of the paper R is set so that a minimum of about 120 mm can be supplied.
[0010]
As shown in FIG. 1, the printing unit 2 performs printing on the bag paper R, for example, yellow, blue, red, and black. The ink tank 21, the relay roller 22, and the printing roller corresponding to each ink 23 and a receiving roller 24 of the printing roller 23 are provided in plural along the conveying direction of the bag paper R, and these printing units 2A can selectively set a printing state and a non-printing state. It is said.
[0011]
As shown in FIG. 1, the drying unit 3 includes, for example, a cover 31 for drying the bag paper R positioned inside, and a blower 32 for blowing air into the cover 31. The
[0012]
As shown in FIG. 1, the cutter unit 4 cuts the cut part C shown in FIG. 7 from the bag paper R to form the side folded part B1 and the bottom folded part B2, and corresponds to the shape of the cut part C. A die roll 41 that is formed in a blade shape and is set laterally with respect to the conveyance direction of the bag paper R, a bar-shaped anvil roll 42 that is set horizontally corresponding to the die roll 41 and is made of, for example, ceramic, and a cut portion that is cut off It is assumed that it has a dust discharge means (not shown) for discharging C, and a plurality of sets of die rolls 41 and anvil rolls 42 can be installed corresponding to a plurality of envelope B shapes.
[0013]
As shown in FIG. 1, the folding and pasting processing unit 5 folds the side folding part B1 formed by the glue part 51 having a glue nozzle or the like and the cutter part 4 for gluing the side folding part B1. A lined roller 52 for engraving a folding line L1, a plurality of conveying rollers 53 for conveying the bag paper R, a folding part 54 such as a folding plate arranged on the conveying roller 53 and folding the side folding part B1, and folding. And a press roller 55 for pressing and bonding the bag paper R.
[0014]
As shown in FIG. 1, the cut-off bottom pasting portion 6 includes a bottom rebar portion 61 for engraving a bottom folding line L3 for folding the bottom folding portion B2, and a side folding portion B1 by the folding pasting processing portion 5. A cutter roll 62 for separating the bag paper R bonded together from the cutting line L2, a bottom gluing portion 63 having a gluing roller for gluing the bottom folded portion B2, and a bottom folding drum 64 for folding the bottom folded portion B2. The bottom folding drum 64 is configured such that the vicinity of the bottom folding line L3 of the bag paper R is sucked into the suction groove portion arranged in the axial direction on the outer periphery thereof, and the bottom folding portion B2 is folded and pasted. Is done.
[0015]
As shown in FIGS. 1 to 6, the delivery unit 7 aligns the delivery drum 71 that rotates and transfers the envelope B formed by the separated bottom pasting unit 6 and the envelope B that is rotated and transferred by the delivery drum 71. An alignment table 72, a counter (not shown) that counts the formed envelope B, and a counter unit 8 that moves the envelope B laterally with respect to the alignment position when a predetermined number of envelopes B are conveyed by the counter. It is said.
[0016]
As shown in FIGS. 2 and 3, the delivery drum 71 is connected to a driving means (not shown) and is driven to rotate, and the delivery drum 71 is rotated and transferred while holding the envelope B on the outer periphery 71A of the delivery drum 71. The holding drum 73 is provided on the outer circumference 71A of the delivery drum 71. The claw groove is arranged in the circumferential direction corresponding to the peeling claw 72A provided on the aligning base 72 and has, for example, two lines. 71b is arranged.
The alignment table 72 is positioned on the downstream side of the delivery drum 71, and the envelope B transported to the end of the delivery drum 71 is peeled from the delivery drum 71 to the alignment table 72. A separation claw 72A for aligning the sheet and a movable equal 72B for aligning the envelope B on the alignment table 72 are arranged, and the tip of the separation claw 72A is located inside the claw groove 71b as shown in FIG. In addition, it is positioned closer to the rotating shaft 71a of the delivery drum 71 than the bottom of a notch 74 described later.
As shown in FIGS. 2 and 3, the holding means 73 includes, for example, four notches 74 on the outer periphery 71A of the delivery drum 71 at regular intervals and substantially parallel to the rotation shaft 71a. And a plurality of suction holes 75 opened in the radial direction of the delivery drum 71, and pressure switching means 76 connected to the suction holes 75.
The notch 74 is arranged in a state parallel to the tangential direction on the outer periphery 71A of the delivery drum 71, and located in front of the suction surface 74a in the transport direction and parallel to the radial direction of the delivery drum 71. It is made into the shape which has the bottom stop surface 74b which the bottom of the envelope B rotated and conveyed contacts.
A plurality of suction holes 75 are arranged on the suction surface 74a with an interval in the axial direction of the rotary shaft 71a, for example, and are provided inside the delivery drum 71 in a pressure switching hole 75A opened in the side surface 71B of the delivery drum 71. Connected by the pipe portion 75a.
As shown in FIGS. 2 and 3, the pressure switching means 76 is positioned on the outer peripheral side of the side surface 71B of the delivery drum 71 and is in contact with the corresponding contact portion 71C. The pressure switching nozzle 77 connected to the pressurizing means and the decompressing means (not shown) is provided.
The pressure switching nozzle 77 is configured such that the pressure reducing nozzle 77A and the pressure nozzle 77B are integrated, and covers a part of the pressure switching nozzle 77 along the rotation locus of the pressure switching hole 75A provided in the side surface 71B of the delivery drum 71. Are disposed at an equal distance from the rotation shaft 71A of the delivery drum 71, and are urged by the urging means 77C to the contact portion 71C of the side surface 71B of the delivery drum 71.
In the pressure switching nozzle 77, the contact side of the delivery drum 71 with respect to the contact portion 71C is a delivery drum in which the notch 74 fixes the envelope B and the pressure switching hole 75A is positioned at the start of conveyance as shown in FIG. The pressure reducing nozzle 77A is a portion from the vertical upper position of 71 to the downstream position in the rotational conveyance direction, and from the vicinity of the end of the pressure reduction nozzle 77A where the pressure switching hole 75A is located at the end of the conveyance envelope B where the notch 74 is located near the alignment table 72 The downstream position in the rotational conveyance direction is the pressurizing nozzle 77B portion, and sealing means such as packing (not shown) is arranged around each contact surface side, and the decompression nozzle 77A is connected to the decompression means via the pipe 77a. The pressurizing nozzle 77B is connected to the pressurizing means through the pipe 77b, and the pressure switching nozzle 77 is connected to the fixed position adjusting means 77c to which the pipes 77a and 77b are connected. More it is assumed adjustable fixed position with respect to the rotational direction of the delivery drum 71.
[0017]
As shown in FIGS. 2 to 5, the counter unit 8 includes a slide unit 81 disposed on the suction surface 74 a of the notch 74, and a rotating shaft 71 a that is integrally connected to the slide unit 81 and lateral to the delivery drum 71. A bracket 82 that is projected in a substantially parallel state, a cam follower 83 that is positioned at the tip of the bracket 82 and is rotatably mounted in the rotation direction of the delivery drum 71, and a slide portion 81 that rotates in contact with the cam follower 83. A cam 84 that slides in the direction of the shaft 71a, a cam position setting unit 85 for setting a contact state of the cam 84 with the cam follower 83, and a control unit (not shown) are provided.
The slide portion 81 is attached to the inside of the notch 74 so as to be slidable by a long hole 81b fixed by a screw 81a or the like, and a plurality of suction holes that are penetrated substantially parallel to the radial direction of the delivery drum 71 on the surface thereof. 75 and a claw groove 81c that allows the inside of the claw groove 71b of the delivery drum 71 where the peeling claw 72A rotates even when the slide portion 81 slides to move. The suction hole 75 can be connected to the pipe portion 75a even when the slide portion 81 slides.
As shown in FIG. 4, the bracket 82 is provided with a biasing means such as a spring that biases the slide portion 81 toward the cam 84.
Cam 84, as shown in FIG. 5 Figures 2, is the side surface 71B and the substantially parallel position to the flat plate shape of the delivery drum 71, on the upper side of the cam 84, from top to bottom for guiding the cam follower 83 An inclined portion 84A that is inclined toward the delivery drum 71 is provided.
The cam position setting unit 85 includes a guide 85A that sets the moving position of the cam 84 and supports the cam 84, and a drive unit (not shown) that is a solenoid, for example. As shown in FIG. FIG. 5 shows a state where the slide portion 81 is urged by the urging means and is located on the cam 84 side, the envelope B is located at the alignment position of the delivery drum 71, and the cam 84 is not in contact with the cam follower 83. As described above, the cam follower 83 in contact with the cam 84 presses the slide portion on the opposite side to the cam 84, and the envelope B is moved from the alignment position of the delivery drum 71 to the opposite side to the cam 84, The state where 84 is in contact with the cam follower 83 can be switched by a control unit (not shown).
[0018]
In the bag making machine M having such a configuration, a roll-shaped bag paper R having a predetermined width dimension is continuously supplied from the paper supply unit 1 and, for example, yellow, blue, red, Black printing is performed on the bag paper R, the bag paper R printed by the printing unit 2 is positioned inside the cover 31 by the drying unit 3, and air is blown into the cover 31 by the blower 32. r is dried, and the cut portion C is cut from the bag paper R by the die roll 41 and the anvil roll 42 of the cutter unit 4 to form the side folded portion B1 and the bottom folded portion B2. The side folding portion B1 to be folded is glued by the portion 51, the folding line L1 for folding the side folding portion B1 formed by the cutter portion 4 is engraved by the lined roller 52, and the bag paper is made by the conveying roller 53 While carrying R The side folding portion B1 is folded by the folding portion 54 disposed on the conveying roller 53, and the bag paper R folded by the press roller 55 is pressed and bonded together. A bottom folding line L3 for folding the part B2 is engraved, the bag paper R to which the side folding part B1 is bonded is separated from the cutting line L2 by the cutter roll 62, and glued to the bottom folding part B2 by the bottom glued part 63. Then, the bottom folding portion B2 is folded and pasted by the bottom folding drum 64 to form the envelope B.
[0019]
The formed envelope B is rotated and transferred by the delivery drum 71 of the delivery unit 7 and aligned with the alignment table 72.
At this time, the pressure reducing nozzle 77A is connected to the reducing means via the pipe 77C, and the switching nozzle 77 is urged by the urging means 77a to the abutting portion 71C on the side surface of the delivery drum 71. The inside of 77A is in a negative pressure state, the pressurizing nozzle 77B is connected to the pressurizing means via the pipe 77b, and the switching nozzle 77 is brought into contact with the side surface of the delivery drum 71 by the urging means 77C. Since the pressure is applied to 71C, the inside of the pressure nozzle 77B is in a pressurized state.
At the time of alignment by the delivery unit 7, as shown in FIG. 6A, when the delivery drum 71 is transporting the envelope B by the cut-off bottom pasting unit 6, the notch 74 of the holding means 73 is positioned at the top position. It is assumed that
In this state, the pressure switching hole 75A provided on the side surface 71B of the delivery drum 71 is located in the pressure reducing nozzle 77A portion of the switching nozzle 77, and the suction hole 75 of the notch 74 is provided inside the delivery drum 71. Since it is connected to the negative pressure state inside the pressure-reducing nozzle 77A through the pipe portion 75a and the pressure switching hole 75A opened in the side surface 71B of the delivery drum 71, as shown in FIG. The envelope 75 is attracted to the notch 74 through the hole 75, and the bottom of the envelope B is fixed in contact with the bottom stop surface 74 b of the notch 74.
Next, as shown in FIG. 6C, since the pressure switching hole 75 </ b> A is located at the pressure reducing nozzle 77 </ b> A portion of the switching nozzle 77 even when the delivery drum 71 rotates, the envelope B is delivered to the delivery drum 71. It is rotated and transferred in accordance with the rotation.
As the delivery drum 71 rotates, as shown in FIG. 6D, when the pressure switching hole 75 </ b> A is positioned at the pressurizing nozzle 77 </ b> B portion of the switching nozzle 77, the suction hole 75 of the notch 74 is moved to the delivery drum 71. In order to be connected to the pressurized state inside the pressurizing nozzle 77B via the tube part 75a provided inside the press drum 75B and the pressure switching hole 75A opened in the side surface 71B of the delivery drum 71, the suction hole 75 is connected. Air is blown into the air. At this time, the envelope B formed by the cut-off bottom pasting part 6 is then fixed to the notch 74 positioned near the top of the delivery drum 71.
Then, as shown in FIG. 6E, the envelope B is peeled off from the delivery drum 71 by the tip of the peeling claw 72A located inside the claw groove 71b and positioned on the alignment table 72. The envelope B is fixed to the notch 74 by the air ejected from the suction hole 75, and the envelope B moves to the movable equal 72B side of the alignment table 72.
Furthermore, as shown in FIG. 6 (f), the envelope B is continuously aligned on the alignment table 72 by continuously arranging the envelope B formed by the separated bottom pasting portion 6, and at the same time, The number of envelopes B aligned by a counter (not shown) is counted.
[0020]
When the envelope B is aligned, as shown in FIG. 4, the cam 84 is not in contact with the cam follower 83, so that the slide portion 81 of the counter portion 8 is urged by the urging means 82A of the bracket 82. As a result, the envelope B is positioned at the cam 84 side, and the envelope B is positioned at the delivery drum 71 alignment position.
When a predetermined number of envelopes B set in advance by a counter (not shown) are arranged, the cam position setting unit 85 of the cam position setting unit 85, for example, a solenoid is driven by the control unit (not shown) while the delivery drum 71 is rotating. 84 is driven to project toward the delivery drum 71 and to abut the cam follower 83.
Then, as shown in FIG. 5, the cam follower 83 rotates in accordance with the rotation of the delivery drum 71, and the cam follower 83 moves along the shape of the cam 84 after contacting the inclined portion 84 </ b> A of the protruding cam 84. As a result, the bracket 82 overcomes the urging force of the urging means 82 </ b> A and moves to the side opposite to the cam 84.
As the bracket 82 moves, the slide portion 81 integrated with the bracket 82 moves in the same direction according to the shape of the long hole 81b. At this time, since the suction hole 75 is connected to the pipe portion 75a even at the slide position of the slide portion 81, the suction hole 75 is fixed by the suction hole 75 simultaneously with the slide of the slide portion 81 as shown in FIG. Envelope B moves to a position opposite to cam 84.
In this state, the delivery drum 71 rotates, and as shown in FIG. 6 (e), the envelope B is removed from the delivery drum 71 by the tip of the peeling claw 72A located inside the claw groove 71b or the claw groove 81c. In order to move the envelope B to the movable equal 72B side of the alignment table 72, the envelope B being released from the suction hole 75 and released from being fixed to the notch 74 is released and positioned on the alignment table 72. The envelope B protrudes from the envelope B in the aligned position by one sheet in the lateral direction. As a result, the envelopes B aligned in a predetermined number set in the lateral direction protrude in the lateral direction, and are shipped together. Etc. can be performed.
[0021]
In addition, it is also possible to set it as the structure which has the slide part which clamps envelope B with the catching claw Z1 as shown in FIG. 8, and slides this catching claw.
[0022]
【The invention's effect】
The bag making machine of the present invention has the following effects.
(1) When the predetermined number is counted, the bag body that has been sucked by the suction holes on the surface of the slide part is moved together with the slide part, and the position of the envelope movement is set according to the amount of movement of the slide part. The certainty in the predetermined number count can be improved.
(2) The bag body is sucked and fixed by the suction hole of the slide part, and the slide part is moved together with the bag body in the suction state of the bag body by the suction hole to fix the bag body by the suction hole. In addition to releasing the air from the suction hole and counting a predetermined number of bags, a bag making machine that does not have a kick mark is provided by moving the alignment position and counting regardless of the bag making speed and paper quality. can do.
(3) Due to the above, workability can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory view showing an embodiment of a bag making machine according to the present invention.
2 is a perspective view showing a delivery unit in the bag making machine of FIG. 1. FIG.
3 is a front view showing a delivery section in the bag making machine of FIG. 1. FIG.
4 is a development view showing an alignment state of envelopes in the delivery drum and the counter unit of the delivery unit in FIG. 2; FIG.
5 is a development view showing a count state of envelopes in a delivery drum and a counter unit of the delivery unit in FIG. 2; FIG.
6 is a process front view showing a delivery process in the delivery section of FIG. 2. FIG.
FIG. 7 is a plan view showing a method for making envelopes in a conventional bag making machine.
FIG. 8 is a perspective view showing a delivery part of a conventional bag making machine.
[Explanation of symbols]
M ... Bag making machine R ... Bag paper B ... Bag (envelope)
B1 ... side folding part B2 ... bottom folding part C ... cut part L1 ... folding line L2 ... cutting line L3 ... bottom folding line 1 ... paper feeding part 2 ... printing part 2A ... printing unit 21 ... ink tank 22 ... relay roller 23 ... Printing roller 24 ... Receiving roller 3 ... Drying part 31 ... Cover 32 ... Blower 4 ... Cutter part 41 ... Die roll 42 ... Anvil roll 5 ... Folding and pasting processing part 51 ... Gluing part 52 ... Flying roller 53 ... Conveying roller 54 ... Folding Portion 55 ... Pressing roller 6 ... Separating bottom sticking portion 61 ... Bottom streak roll 62 ... Cutter roll 63 ... Bottom glued portion 64 ... Bottom folding drum 7 ... Delivery unit 71 ... Delivery drum 71A ... Outer periphery 71B ... Side 71C ... Contact Part 71a ... Rotating shaft 71b ... Claw groove 72 ... Alignment table 72A ... Peeling claw 72B ... Moving equal 73 ... Holding means 74 ... Notch 74a ... Suction surface 74b ... Bottom stop surface 75 ... Suction hole 75a ... Pipe part 75 ... pressure switching hole 76 ... pressure switching means 77 ... pressure switching nozzle 77A ... pressure reducing nozzle 77B ... pressure nozzle 77C ... biasing means 77a, 77b ... pipe 8 ... counter part 81 ... slide part 81a ... screw 81b ... long hole 81c ... Claw groove 82 ... Bracket 82A ... Biasing means 83 ... Cam follower 84 ... Cam 84A ... Inclined portion 85 ... Cam position setting portion 85A ... Guide

Claims (9)

A bag making machine for continuously forming a bag body such as a postal envelope and making a bag, and transporting the bag body to the upstream peripheral surface in the rotation direction of the rotating delivery drum, In the bag making machine that is held and held by holding means provided on the outer periphery of the delivery drum, and is aligned with an alignment table provided on the downstream side in the rotation direction of the delivery drum,
A bag making machine, wherein the holding means of the delivery drum is provided with a slide portion that slides the bag body held by the holding means in the direction of the rotation axis of the delivery drum. 2. The bag making machine according to claim 1 , wherein the holding means is provided with a suction hole for sucking the bag held by the holding means . The bag making machine according to claim 1 , wherein the holding means is constituted by a clamping claw disposed on the delivery drum. The holding means is provided with a notch substantially parallel to the rotation axis of the delivery drum, the notch has a suction surface substantially parallel to the tangential direction on the outer periphery of the delivery drum, and a slide portion is provided on the suction surface. The bag making machine according to claim 1, wherein an adsorption hole is opened in the slide portion. The delivery drum has a pressure reducing means for sucking and fixing the bag body through the suction hole, and aligning the bag body by releasing the gas from the suction hole by releasing the fastening of the bag body in the vicinity of the alignment table. The bag making machine according to claim 2, further comprising a pressure switching unit including a pressurizing unit. The slide part is mounted inside the notch so as to be slidable in the direction of the rotation axis of the delivery drum, and a plurality of suction holes are formed on the surface thereof so as to pass through substantially parallel to the radial direction of the delivery drum. 6. The bag making machine according to claim 1, wherein the bag making machine is connectable to the pressure switching means even when the slide portion slides. A bracket is integrally connected to the slide portion on the side of the delivery drum and protrudes substantially parallel to the rotation axis of the delivery drum. A cam follower is rotatably attached to the tip of the bracket, and the cam follower is connected to the delivery drum. The bag making according to any one of claims 1, 2, 4, 5, or 6, wherein the sliding portion is slid in the rotation axis direction of the delivery drum in contact with a cam arranged on a side in the rotation axis direction. Machine. The cam has a flat plate shape that is positioned substantially parallel to the side surface of the delivery drum, and the cam is tilted toward the delivery drum from the upper side to the lower side in the rotation direction of the delivery drum for guiding the cam follower. The bag making machine according to claim 7, wherein an inclined portion is provided. In the cam, the envelope is positioned at the delivery drum alignment position and the cam is not in contact with the cam follower, and the cam follower in contact with the cam presses the slide portion to the opposite side of the cam so that the envelope moves from the delivery drum alignment position. The bag making machine according to any one of claims 7 and 8, wherein a cam position setting unit is provided that can be switched between a state of being moved to the opposite side of the cam and a state where the cam contacts the cam follower.

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