JP2004352367A - Bag manufacturing/packing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag manufacturing/packing machine which has a function for attaching a manufactured bag on a strip S and is reduced in restrictions on the usable strip S. <P>SOLUTION: The bag manufacturing/packing machine is provided with a bag manufacturing section, a strip conveying section, a retaining mechanism, a transferring mechanism, and an adhering mechanism. The retaining mechanism is used to retain by retaining the upper part in the bag with a gripping arm. The transferring mechanism is used to transfer the bag retained by the retaining mechanism from a retaining point to an adhering point. The adhering mechanism has a heater 33a, a pressing body 33c, a melting preventing plate 33d, and a solenoid 33e. The pressing body 33c is used to sandwich the bag and the strip S together with the heater 33a and to weld the bag on the strip S. The melt preventing plate 33d is used to separate the strip S from the heater 33a when a conveyance of the strip S is stopped. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bag making and packaging machine, and more particularly to a bag making and packaging machine having a function of attaching a bag to a band.

  2. Description of the Related Art There is a bag making and packaging machine as an apparatus for filling and packing an object such as a snack confectionery into a bag while manufacturing the bag. For example, in a vertical type bag making and packaging machine called a pillow packaging machine, a packaging material, which is a sheet-like film, is formed into a cylindrical shape by a former and a tube, and a vertical sealing mechanism is used to overlap the vertical edge of the cylindrical packaging material. Is heat-sealed (heat-welded) to form a cylindrical packaging material. Then, the inside of the tubular packaging material which finally becomes a bag was filled with the object to be packaged from the tube, and heat sealed across the upper end portion of the bag and the lower end portion of the subsequent bag by a horizontal sealing mechanism below the tube. Thereafter, the center of the heat seal portion (lateral seal portion) is cut by a cutter.

  It has been proposed to add a function of attaching a manufactured bag to a belt to such a bag making and packaging machine (for example, see Patent Document 1). In the device disclosed herein, the bags are attached to the band at small intervals. When the bags are attached to the band in this manner, a plurality of bags wrapping snacks and the like can be easily displayed in a retail store or the like by hanging the ends of the band.

However, in the apparatus disclosed in Patent Literature 1, the lateral sealing operation for performing bag making also serves to attach the bag to the band. Therefore, there is a possibility that the mounting operation is restricted, and there is a problem that it is difficult to smoothly feed out the band.
On the other hand, in Japanese Patent Application No. 2002-251845, the present applicant discloses a bag making and packaging machine having a structure in which a mechanism for performing the mounting operation is separated from the horizontal sealing mechanism while interlocking the mounting operation with the horizontal sealing operation. Has been proposed. Here, a mechanism for attaching the bag to the band, a mechanism for transporting the band, and the like are disposed below the horizontal sealing mechanism, so that restrictions on the mounting operation can be suppressed.
Japanese Patent Publication No. 9-508879

  However, in the apparatus of Patent Document 1 and the packaging machine of Japanese Patent Application No. 2002-251845, the band is always close to the heat generating portion (heater, etc.) heated to attach the bag to the band. It has a structure. For this reason, in order to avoid deterioration or damage of the band due to heat when the conveyance of the band is stopped, various restrictions are imposed on the selection of the band, and the usable band is limited or the band is limited. It may increase the cost of the body.

  An object of the present invention is to provide a bag making and packaging machine having a function of attaching a manufactured bag to a band, wherein the number of usable bands is reduced.

  The bag making and packaging machine according to the first aspect includes a bag making mechanism, a belt transport mechanism, a moving mechanism, and an attachment mechanism. The bag making mechanism produces a bag filled with goods. The belt transport mechanism transports the belt. The moving mechanism has a holding mechanism for holding the bag manufactured by the bag making mechanism, and moves the bag held by the holding mechanism to a fixed position arranged diagonally downward in conjunction with the movement of the bag making mechanism. . The attaching mechanism is a mechanism for attaching the bag, which has been moved while being held by the moving mechanism, to the belt, and has a first part, a second part, and a separating unit. The first part is capable of contacting the belt and generates heat. The second part sandwiches the bag moved diagonally downward by the moving mechanism and the band conveyed by the band conveying mechanism together with the first part, and welds the bag and the band. The separating means separates the belt from the first part when the transport of the belt by the belt transport mechanism is stopped.

Here, the bag manufactured by the bag making mechanism is sandwiched between the first part and the second part together with the band, and heat generated from the first part and the heat generated by the first part and the second part are sandwiched. As a result, the bag and the band are welded. Thereby, the bag is attached to the band.
However, since the first portion that generates heat is arranged at a position where it can come into contact with the band, the production of bags by the bag making mechanism is stopped due to the condition of the bag making mechanism or the machine in the previous process, and the band is conveyed. When the transport of the belt by the mechanism is stopped, the belt may be altered (discolored or the like) or melted depending on the type of the belt. For example, when the belt is a paper tape, the heat generated by the first part may cause the paper tape to be scorched and discolored, thereby lowering the commercial value. Further, when the band is a plastic tape, there is a possibility that the heat generated by the first portion may cause the tape to shrink or be melted.

  On the other hand, in the bag making and packaging machine according to the first aspect, when the conveyance of the band by the band conveying mechanism is stopped due to, for example, the production of the bag by the bag making mechanism being stopped for some reason, the separating means is not used. Keep body and part 1 apart. As described above, since the band and the first part are separated when the conveyance of the band is stopped for some reason, in this bag making and packaging machine, defects such as deterioration or damage of the band when the conveyance of the band is stopped. Can be avoided. For this reason, the types of usable strips increase, and even when an expensive strip is not used, damage to the strip due to heat generation of the first portion can be suppressed.

A bag making and packaging machine according to a second aspect is the bag making and packaging machine according to the first aspect, wherein the band conveying mechanism conveys the band while the band is in contact with the first portion.
Here, the belt is conveyed in a state of contacting the first part. Therefore, when the transport of the belt by the belt transport mechanism is stopped for some reason, a large amount of heat may act on a part of the belt that is in contact with the first portion at that time.

However, in the bag making and packaging machine of the present invention, when the conveyance of the band by the band conveying mechanism is stopped, the separating means separates the band from the first portion, so that an excessive amount of heat may act on the band. It is suppressed, and deterioration and damage of the band can be avoided.
A bag making and packaging machine according to a third aspect is the bag making and packaging machine according to the first or second aspect, wherein the separating means comes into contact with the band and separates the band from the first part.

Here, since the belt is configured to be separated from the first portion, a structure for fixing the first portion that generates heat can be employed. If the first part is fixed in this way, it is not necessary to move components necessary for heat generation.
A bag making and packaging machine according to a fourth aspect is the bag making and packaging machine according to the first or second aspect, wherein the separating means moves the first part and separates the first part from the belt.

Here, since the first part is separated from the belt, if the first part is configured to be movable from the beginning, it can be used to provide a separating means.
A bag making and packaging machine according to claim 5 is the bag making and packaging machine according to claim 1 or 2, wherein the separating means is arranged upstream of the first part in the transport direction of the band, Cut the band.
Here, the first portion and the band are separated by cutting the band upstream of the first part (upstream in the transport direction of the band). Therefore, when the cutting means for cutting the band at an appropriate position from the beginning is arranged upstream of the first part, it can be used as the separating means.

The bag making and packaging machine according to claim 6 is the bag making and packaging machine according to any one of claims 1 to 5, wherein the mounting mechanism further includes a control unit that controls heat generation of the first part. . The control unit performs control such that heat generation of the first unit is reduced when the conveyance of the band is stopped by the band conveyance mechanism.
Here, the control unit is configured to control the heat generation of the first unit, and the control is performed so that the heat generation of the first unit is reduced when the conveyance of the belt is stopped. Since it is not necessary to weld the bag and the band when the conveyance of the band is stopped, there is no problem even if the heat generation of the first part is reduced. On the other hand, when the conveyance of the band is stopped, there is a high possibility that excessive heat acts on the band, and if the excessive heat acts, the band may be deteriorated or damaged. Is reduced, thereby protecting the belt.

  In addition, if the temperature of the first part is slightly lowered, for example, the temperature of the first part around 190 ° C. is lowered by only 10 to 20 ° C., the band is deteriorated even when the band is close to the first part. Dripping and melting are suppressed. In addition, when reducing the heat generation of the first portion when the conveyance of the belt is stopped, it is desirable to reduce the heat generation to a necessary minimum. If the heat generation of the first part is reduced unnecessarily, the time required for returning when the mounting mechanism has to be operated again due to the cause of the stoppage of the bag making mechanism being released or the like is long. Because it becomes.

The bag making and packaging machine according to claim 7 is the bag making and packaging machine according to any one of claims 1 to 6, wherein the separating means is configured to stop the transport of the band by the belt transport mechanism for a predetermined time or less. In this case, it is determined that the conveyance of the band by the band conveyance mechanism is continued.
When the conveyance of the band by the band conveyance mechanism is stopped due to a stoppage of the bag making mechanism or the like, it is desirable to separate the band and the first part by the separating means as described above. When the band is being conveyed, the state in which the conveyance of the band is temporarily stopped occurs. If the band and the first part are separated at the time of apparent stoppage of the band in the intermittent conveyance of such a band (transfer pause), the bag and the band can be welded normally. There is a risk of disappearing.

  On the other hand, in the bag making and packaging machine according to claim 7, when the conveyance stop time of the band by the band conveyance mechanism is equal to or less than the predetermined time, the conveyance of the band by the band conveyance mechanism is continued. Judge, and do not perform the operation of separating the belt and the first part. Therefore, by setting the predetermined time to a time longer than the transport stop time of the belt when the belt transport mechanism is simply intermittently transporting the belt, the apparent belt in the intermittent transport of the belt is set. When the conveyance of the body is stopped, the band and the first portion are separated from each other, so that it is possible to suppress a problem in welding the bag and the band.

The bag making and packaging machine according to claim 8 is the bag making and packaging machine according to any one of claims 1 to 7, wherein the holding mechanism and the mounting mechanism do not temporarily interlock with the movement of the bag making mechanism. Controlled.
A bag making and packaging machine according to claim 9 is the bag making and packaging machine according to any one of claims 1 to 8, wherein the bag making mechanism applies heat and pressure to the bag while moving downward. And a pair of seal jaws for performing horizontal sealing.

  A bag making and packaging machine according to a tenth aspect is the bag making and packaging machine according to the ninth aspect, wherein the pair of seal jaws release the holding of the bag at a fixed height position.

  In the present invention, when the conveyance of the band by the band conveyance mechanism is stopped, for example, when the production of the bag by the bag making mechanism is stopped for some reason, the separating means separates the band from the first part. In this way, when the conveyance of the band is stopped for some reason, the band and the first part are separated from each other, so that it is possible to avoid problems such as deterioration and damage of the band when the conveyance of the band is stopped. Become. For this reason, the types of usable strips increase, and even when an expensive strip is not used, damage to the strip due to heat generation of the first portion can be suppressed.

[Overview]
1 and 2 show a side view and a front view of a vertical bag making and packaging machine 1 according to one embodiment of the present invention. The bag making and packaging machine 1 is a machine that covers a food such as potato chips (potato chips in this case) with a film, and seals the cylindrical film vertically and horizontally to manufacture a bag. Further, the bag making and packaging machine 1 has a function of attaching the manufactured bags to a strip (band).

The potato chips fall from the weighing machine 2 provided above the bag making and packaging machine 1 by a predetermined amount in principle.
The bag making and packaging machine 1 includes a bag making section 10, a film roll holding section 22, a strip attaching section 30, a strip transport section 41, a strip roll holding section 42, a transport conveyor 85, and a control section 90 (FIG. 12). See). Each part except the transport conveyor 85 is fixed or supported by a frame 6 supported by four legs 5, and is mostly covered by a casing 7 for safety.

[Film roll holder 22]
The film roll holding unit 22 holds a film roll 22a that feeds a sheet-like film F to a former 13a of the bag making unit 10 described below. The film roll 22a has a film F wound thereon. The tension of the film F fed from the film roll 22a is kept within a predetermined range by a dancer roller or the like, and loosening and meandering during conveyance are suppressed.

A film remaining amount detection sensor 23 (see FIG. 12) for detecting the remaining amount of the film F wound on the film roll 22a is disposed near the film roll holding unit 22.
[Bag-making unit 10]
As shown in FIG. 3, the bag making section 10 includes a forming mechanism 13 for forming a film F sent in a sheet shape into a tubular shape, and a tubular film F (hereinafter, referred to as a tubular film). A pull-down belt mechanism 14 that conveys downward, a vertical seal mechanism 15 that vertically seals the overlapping portion of the cylindrical film, and a horizontal seal that seals the upper and lower ends of the bag B by horizontally sealing the cylindrical film. And a mechanism 17.

<Molding mechanism 13>
The forming mechanism 13 has a tube 13b and a former 13a. The tube 13b is a cylindrical member, and the upper and lower ends are open. The potato chips C measured by the weighing machine 2 are put into the opening at the upper end of the tube 13b. The former 13a is arranged so as to surround the tube 13b. The shape of the former 13a is such that the sheet-like film F fed from the film roll 22a is formed into a tubular shape when passing between the former 13a and the tube 13b. Further, the tube 13b and the former 13a of the forming mechanism 13 can be replaced according to the size of the bag to be manufactured.

<Pull-down belt mechanism 14>
The pull-down belt mechanism 14 is a mechanism that sucks the cylindrical film wound around the tube 13b and conveys it downward. As shown in FIG. 3, belts 14c are provided on both left and right sides of the tube 13b. In the pull-down belt mechanism 14, a belt 14c having a suction function is rotated by a driving roller 14a and a driven roller 14b to convey the cylindrical film downward. In FIG. 3, the illustration of a roller drive motor for rotating the drive roller 14a and the like is omitted.

<Vertical seal mechanism 15>
The vertical sealing mechanism 15 is a mechanism that heats an overlapping portion of the tubular film wound around the tube 13b while pressing the overlapping portion against the tube 13b with a constant pressure to vertically seal the overlapping portion. The vertical sealing mechanism 15 is located on the front side of the tube 13b, and has a heater and a heater belt heated by the heater and in contact with the overlapping portion of the tubular film.

<Horizontal seal mechanism 17>
The horizontal seal mechanism 17 is disposed below the forming mechanism 13, the pull-down belt mechanism 14, and the vertical seal mechanism 15. The horizontal seal mechanism 17 has a pair of seal jaws 51 containing a heater (see FIG. 4). The pair of seal jaws 51 are located on the front side and the rear side of the cylindrical film, respectively, and rotate so as to draw a substantially D-shaped trajectory T symmetrical in the front-rear direction as shown in FIGS. . Then, during the turning, the tubular film is sandwiched while the pair of sealing jaws 51 are pressed against each other, and pressure and heat are applied to a portion of the tubular film which is the upper and lower ends of the bag to seal the bag. The seal jaw 51 located on the front side of the cylindrical film is supported by the shaft 17c so as to rotate about the shaft 17c. The shaft 17c is rotated by the operation of the turning motor 17a (see FIG. 12), and is horizontally moved back and forth via a ball screw mechanism (not shown) by the operation of the shaft moving motor 17b. Similarly, the seal jaw 51 located on the rear side of the tubular film rotates by the operation of the turning motor 17a and also horizontally moves back and forth by the operation of the shaft moving motor 17b. In this way, the trajectory T of the substantially D-shaped seal jaw 51 is realized by the horizontal movement of the pair of seal jaws 51 while rotating. The pressure at which the pair of seal jaws 51 sandwich the tubular film is adjusted by controlling the torque of the shaft moving motor 17b.

Further, a cutter (not shown) is built in one of the pair of seal jaws 51. This cutter is different from a cutter 45 described later, and plays a role of separating the bag B from the subsequent tubular film at the center position in the height direction of the horizontal sealing portion by the sealing jaw 51.
13 and 14 show a lateral sealing operation by the pair of sealing jaws 51. In an example of the horizontal sealing operation shown in FIG. 13, the turning seal jaw 51 clamps the cylindrical film at the point P10 (see FIGS. 13A and 13B), and moves downward while maintaining the cylindrical shape. Pressure and heat are applied to the films to release the tubular films at point P11 and move away from each other (see FIGS. 13 (c) and 13 (d)). That is, the seal jaw 51 applies pressure and heat to the cylindrical film while moving downward at the same speed as that of the cylindrical film from point P10 to point P11 to perform horizontal sealing. Then, the bag is cut by a cutter, and the bag B is discharged downward by releasing the holding of the tubular film that has become the bag B at the point P11 (see FIG. 10).

  FIG. 14 shows another example of the horizontal sealing operation. Here, the seal jaw 51 turns while drawing a substantially D-shaped locus T2 different from the locus T. The pivoted seal jaw 51 clamps the cylindrical film at a point P12 located at a position lower than the above-mentioned point P10 (see FIGS. 14A and 14B), and moves downward while maintaining the cylindrical shape. Pressure and heat are applied to the films to release the cylindrical films at point P11 and move away from each other (see FIG. 14 (c) and FIG. 14 (d)). That is, the seal jaw 51 applies pressure and heat to the tubular film while moving downward at the same speed as that of the tubular film from point P12 to point P11 to apply a horizontal seal. Then, the bag B is discharged downward by cutting with a cutter built in the seal jaw 51 and releasing the holding of the tubular film that has become the bag B at the point P11.

  In the bag making and packaging machine 1, the sealing time is changed according to the size of the bag B to be manufactured and the material of the film F to be used. This change in the sealing time is mainly a change in the time during which the upper and lower ends of the bag B are sandwiched by the pair of seal jaws 51. This can be performed by shifting the point at which clamping is started or the point at which clamping of the tubular film is released. Here, as shown in FIG. 13 and FIG. 14, the sealing time is changed by shifting the height position of the point at which the pair of sealing jaws 51 starts to sandwich the tubular film to be the bag B, and the pair of sealing jaws 51 is changed. Control is performed to keep the height position (release position) of the point at which the sealing jaw 51 releases the holding of the tubular film to be the bag B constant. That is, the point at which the pair of seal jaws 51 releases the pinching of the tubular film that becomes the bag B is as shown in FIGS. Is fixed at the point P11 regardless of the moving distance.

[Strip mounting part 30]
The strip mounting section 30 performs a mounting operation of gripping the manufactured bag B at a position where the sealing jaws 51 of the horizontal sealing mechanism 17 are separated, moving the bag B diagonally downward, and then welding the bag B to the strip S. The strip attaching section 30 has a holding mechanism 31, a moving mechanism 32, and a fixing mechanism 33.

<Holding mechanism 31>
At the holding point P1 (see FIG. 10) based on the fixing point P11 at which the sealing jaw 51 of the horizontal sealing mechanism 17 releases the holding of the bag B (see FIG. 10), the holding mechanism 31 Each of them is gripped and held by gripping arms 31b (see FIG. 6) which come round from both front and rear sides. The holding point P1 is determined at a position lower than the fixed point P11 by a predetermined distance, and is always constant like the fixed point P11. That is, the holding point P1 is always at the same position even if the size of the bag B or the material of the film F changes.

  As shown in FIG. 6, the holding mechanism 31 is a pair of left-right symmetrical mechanisms, and is built in the main body 31a, two gripping arms 31b disposed above the main body 31a, and the main body 31a. A holding air cylinder (not shown) and a fixing portion 31c fixed to a moving mechanism 32 described later are provided. The gripping arm 31b is supported by the main body 31a so as to rotate about a vertical rotation axis arranged in parallel in the front-rear direction. High-pressure air is supplied from a high-pressure air supply unit (not shown) to the holding air cylinder incorporated in the main body 31a via an on-off valve. When the holding air cylinder is operated, the two gripping arms 31b rotate in the directions indicated by the dotted lines in FIG. 6, and the tip ends grip the side of the bag B from both front and rear sides. The pair of holding mechanisms 31 arranged separately on the left and right sides are controlled at the same timing, and the left and right sides of the bag B are simultaneously grasped by the total of four grasping arms 31b.

<Moving mechanism 32>
The moving mechanism 32 moves the holding mechanism 31 so that the bag B moves from the above-mentioned holding point P1 to a fixing point P2 described later (see FIGS. 4 and 10). That is, the moving mechanism 32 moves the bag B from the holding point P1 to the fixing point P2 by moving the holding mechanism 31 that holds the bag B. Thereby, the moving mechanism 32 determines that the bag B attached to the strip S (see the upper bag B in FIG. 4) is discharged downward from the horizontal sealing mechanism 17 next (the upper bag in FIG. 10). The bag B is moved to a position where it does not interfere with the bag B).

  When the bag B discharged downward from the horizontal sealing mechanism 17 interferes with the bag B attached to the strip S, the horizontal sealing operation in the bag making section 10 (horizontal sealing mechanism 17) becomes unstable. Here, the holding point P1 and the fixing point P2 are shifted in the front-rear direction so that such interference can be avoided. Specifically, the holding point P1 and the fixing point P2 are shifted in the front-rear direction by a predetermined distance in consideration of the maximum thickness of the bag to be handled (dimension of the bag in the front-rear direction), the posture of the bag B at the time of attachment, and the like. ing.

The moving mechanism 32 mainly includes a rail 72 whose upper and lower ends are fixed by a fixing member 71, a slide member 73 movable along the rail 72, a support member 74 fixed to the slide member 73, and a link member. 75, a rotating member 76, pulleys 66 to 70, belts 66a to 69a, and a rotating shaft 76a.
As shown in FIG. 4, the fixing member 71 (not shown in FIG. 5) is fixed to a pair of left and right side wall plates 30a fixed to the frame 6 so that the upper and lower portions of the rail 72 do not move. It is fixed in place.

The rail 72 is inclined from upper front to lower lower in a side view, and supports the slide member 73 via a linear bush.
The slide member 73 mechanically interlocks with the movement of the seal jaw 51 of the horizontal seal mechanism 17 as described later, and repeats reciprocating obliquely along the rail 72 in a side view. The slide member 73 is a pair of left and right members, and connecting rods 79a and 79b are stretched between the two members.

  A support member 74 is fixed to the slide member 73 via connecting rods 79a and 79b. The support member 74 is a pair of left and right members, and extends obliquely upward and forward, and upper ends thereof fix the fixing portion 31 c of the holding mechanism 31. Therefore, the slide member 73, the support member 74, and the holding mechanism 31 repeatedly move diagonally (up and down and back and forth).

  One end of a link member 75 is supported by a pin at the lower end 73 a of the slide member 73. The other end of the link member 75 is supported by a pin on a rotation end 76b of the rotation member 76. When the rotating member 76 rotates according to the rotation of the rotating shaft 76a fixed to the center of rotation, the link member 75 assumes the posture shown in FIG. 4 or the posture shown in FIG. Will be lowered or raised diagonally.

  The left and right rotating shafts 76a for rotating the pair of left and right rotating members 76 are rotated by the rotation of the pulleys 67 and 70, respectively. The pulley 67 rotates in conjunction with the rotation of the pulley 66 via a belt 66a, as shown in FIGS. The pulley 66 is fixed to a shaft 17c that rotates the seal jaw 51 of the horizontal seal mechanism 17, and is rotated by the power of a turning motor 17a (see FIG. 12) of the horizontal seal mechanism 17 that rotates the shaft 17c. Things. That is, the pulley 67 fixed to the right rotation shaft 76a is rotated by the power of the turning motor 17a of the horizontal seal mechanism 17. The pulley 70 fixed to the left rotating shaft 76a also rotates in conjunction with the pulley 67 via the pulleys 68 and 69, the belts 67a and 69a, and the connecting shaft 68a. Therefore, the left and right rotation shafts 76 a that rotate the rotation member 76 to move the slide member 73 obliquely are rotated by the power of the turning motor 17 a of the horizontal seal mechanism 17, and the rotation of the seal jaw 51 is mechanical. Will be linked to

With such a configuration, the moving mechanism 32 causes the holding mechanism 31 to be below the seal jaw 51 immediately before releasing the bag B manufactured by the seal jaw 51 of the horizontal sealing mechanism 17 as shown in FIG. Until the bag B is manufactured, the holding mechanism 31 is positioned near the fixing mechanism 33 as shown in FIG.
<Fixing mechanism 33>
The fixing mechanism 33 welds the bag B to the strip S at a fixing point P2 below and behind the holding point P1. 5 and 8, the fixing mechanism 33 mainly includes a heater 33a, a pressing cylinder 33b, and a pressing body 33c. The heater 33a is a heater that is constantly energized and generates heat and has a maximum temperature of about 200 ° C. The pressurizing cylinder 33b is supplied with high-pressure air from the above-mentioned high-pressure air supply unit via an on-off valve, and the head 63 rises obliquely by operation. The head 63 supports the distal end of the pressing body 33c via the connecting member 62. Therefore, the reciprocating motion of the head 63 of the pressing cylinder 33b is replaced by the turning motion of the pressing body 33c. The pressing body 33c has its rear end portion supported by a pin on the fixed shaft 61, and pivotally moves by a predetermined angle so that the front end portion contacts or separates from the heater 33a (see the dotted line in FIG. 8).

  Although illustration of the bag B is omitted in FIG. 8, the fixing mechanism 33 has a state in which the strip S and the laterally sealed upper end of the bag B exist between the heater 33a and the pressing body 33c (see FIG. 4). ), The strip S and the bag B are sandwiched between the pressing body 33c and the heater 33a based on a command from the control unit 90. Here, when the air in the pressing cylinder 33b is evacuated, the pressing body 33c is configured to apply pressure toward the heater 33a, and the upper end of the bag B is pressed against the strip S for about 200 msec. Thereby, the upper end of the bag B is welded to the strip S.

  Further, the fixing mechanism 33 is provided with a melting prevention plate 33d that is switched between the state shown in FIG. 9A and the state shown in FIG. 9B by the solenoid 33e. The solenoid 33e is a mechanical component that converts magnetic energy into mechanical energy by applying a magnetic force generated by flowing a current through an electromagnetic coil, and operates according to a command from the control unit 90. When the control unit 90 sends an operation command to the solenoid 33e as described later, during normal normal bag making, it is in a state shown in FIG. 9 (a) and is located at a position distant from the strip S conveyed along the heater 33a. The tip of the dissolution preventing plate 33d moves diagonally upward to push the strip S diagonally forward. As a result, the strip S is separated from the heater 33a, and becomes the state shown in FIG. 9B.

The heater 33a does not have a movable structure, and wiring for supplying electric power to the heater 33a is fixed.
[Strip roll holding unit 42]
The strip roll holding unit 42 holds a strip roll 42a for supplying the strip S to a space above the heater 33a of the fixing mechanism 33. The strip roll 42a has a strip S wound thereon.

  Further, a strip remaining amount detection sensor 43 (see FIG. 12) for detecting the remaining amount of the strip S remaining on the strip roll 42a is disposed near the strip roll holding unit 42. The strip remaining amount detection sensor 43 is a photoelectric sensor that detects whether or not the strip S remains on the strip roll 42a by detecting the presence of the strip S fed from the strip roll 42a. The detection result of the strip remaining amount detection sensor 43 is sent to the control unit 90.

[Strip transport unit 41]
The strip transport section 41 transports the strip S fed from the strip roll 42a to the fixing mechanism 33. The strip transport section 41 has a transport motor 41a, a drive belt 41b, drive rollers 41c and 41d, and a plurality of rollers. A driving portion including the transport motor 41a, the driving belt 41b, and the driving rollers 41c and 41d is provided near the fixing mechanism 33. When the rotation of the rotation shaft of the transport motor 41a is transmitted to the drive rollers 41c and 41d via the drive belt 41b, the strip S applied to the drive rollers 41c and 41d is sent above the heater 33a of the fixing mechanism 33. Go. Along with this, the strip roll 42a, which feeds the strip S to the drive rollers 41c, 41d by a plurality of rollers, rotates to feed the strip S wound one after another.

The transport motor 41a for transporting the strip S is a servomotor. The control unit 90, which will be described later, grasps the feed amount by taking a pulse of the transport motor 41a and controls the feed amount of the strip S.
The tension of the strip S fed from the strip roll 42 a to the fixing mechanism 33 and transported is adjusted by the tension adjusting mechanism 44. As shown in FIG. 11, the tension adjusting mechanism 44 includes two rollers 44a and 44b rotatably supported by a fixing member 6a fixed to the frame 6, and a rear end portion 44d rotatably supported by the fixing member 6a. The arm member 44c includes an arm member 44c extending downward and forward, and a roller 44f pivotally supported by a distal end portion 44e of the arm member 44c. By sequentially passing the strip S over these three rotors 44a, 44f, and 44b, the arm member 44c and the roller 44f pull the strip S with a predetermined force, and the tension of the strip S is maintained in a predetermined range. . Thereby, loosening and meandering of the strip S are suppressed.

  Further, the gap between the drive roller 41c of the strip transport unit 41 and the heater 33a of the fixing mechanism 33 is formed so that a cut or a hole can be formed in the strip S sent from the strip transport unit 41 and reaching the fixing mechanism 33. Is provided with a cutter 45 and a punch 46 (see FIG. 8). The cutter 45 can form a cut 45a in the strip S as shown in FIG. The punch 46 can form a hole 46a as shown in FIG. The cutter 45 and the punch 46 are disposed upstream of the heater 33a and the pressing body 33c of the fixing mechanism 33 in the transport direction of the strip S.

[Conveyor 85]
The transport conveyor 85 discharges a series of bags B whose upper ends are welded to the strip S as shown in FIG. As shown in FIG. 12, the transport conveyor 85 is continuously operated at a constant speed by the transport motor 85a (it can be operated intermittently).

[Control unit 90]
The control unit 90 controls the motors, air cylinders, heaters, and the like of each unit based on the settings input by the user of the bag making and packaging machine 1 on the touch panel display 91. As shown in FIG. 12, the control unit 90 includes a roller driving motor of the pull-down belt mechanism 14, a heater of the vertical sealing mechanism 15, a turning motor 17 a of the horizontal sealing mechanism 17, a shaft moving motor 17 b and a built-in cutter, and a holding mechanism 31. , The heater 33a and the pressing cylinder 33b of the fixing mechanism 33, the transport motor 41a of the strip transport section 41, the cutter 45, the punch 46, the transport motor 85a of the transport conveyor 85, and the like. Further, a detection result is input to the control unit 90 from the film remaining amount detection sensor 23, the strip remaining amount detection sensor 43, and the like.

The user or the like can use the touch panel display 91 to determine the size of the bags B to be manufactured, the number of bags B to be manufactured per unit time, whether or not to attach the bags B to the strip S, and the quantity of a group of bags B to be attached to the strip S. And setting items such as the mounting pitch of the bags B to the strip S, the distance between the groups of bags B, and the like.
Next, the control of the control unit 90 relating to attaching the bag B manufactured by the bag making unit 10 and discharged downward from the horizontal sealing mechanism 17 to the strip S will be described.

<Mounting control of bag B on strip S>
The strip attaching section 30 attaches the bag B to the strip S by three operations of holding the bag B by the holding mechanism 31, moving the bag B by the moving mechanism 32, and sealing operation by the fixing mechanism 33.
In the holding operation of the bag B by the holding mechanism 31, the control unit 90 operates the holding cylinder to move the left and right side portions of the bag B to 4 immediately before the pair of seal jaws 51 release the holding state of the bag B. It is gripped by the book gripping arm 31b.

The moving operation of the bag B by the moving mechanism 32 is mechanically performed by the power of the turning motor 17a of the horizontal seal mechanism 17, as described above.
In the sealing operation by the fixing mechanism 33, the pressing cylinder 33b is controlled to press the pressing body 33c against the heater 33a which is always energized. Thereby, the upper ends of the strip S and the bag B are sandwiched between the pressing body 33c and the heater 33a, and the bag B is welded to the strip S by the heat of the heater 33a and the pressure by the pressing body 33c. The timing of this pressing (the timing of welding) coincides when the bag B moves to the fixing point P2 by the moving mechanism 32. Further, the control unit 90 adjusts the temperature of the heater 33a, the pressing force of the pressing body 33c, and the time during which the pressing body 33c is pressed against the heater 33a so that the degree of fixation of the bag B to the strip S is within an appropriate range. Adjusted to enter.

Of the three operations described above, the holding operation and the fixing operation can be performed irrespective of the movement of the bag making unit 10, and the moving operation is performed by the movement of the horizontal sealing mechanism 17 of the bag making unit 10. It works together.
<Strip transport control, cutter and punch control>
The strip conveyor 41 includes a number of bags B to be manufactured per unit time input by a user or the like, a quantity of a group of bags B to be attached to the strip S, a mounting pitch of the bags B to the strip S, and a number of bags B. The transport motor 41a is controlled based on the distance from the group of bags B and the like. As described above, the control unit 90 captures the feed amount by taking the pulse of the transport motor 41a and controls the feed amount of the strip S. Further, the control unit 90 controls an operation of making a cut 45 a in the strip S by the cutter 45 and an operation of making a hole 46 a in the strip S by the punch 46 in accordance with the transport of the strip S.

The quantity of the group of bags B to be attached to the strip S is the quantity serving as a display unit when exhibited at a retail store, and is, for example, six in the example shown in FIG.
The pitch at which the bags B are attached to the strip S is the distance between the adjacent bags B in the group of bags B, and the distance between the time when the bag B is sealed on the strip S and the time when the next bag B is sealed on the strip S. This corresponds to the distance (transport pitch) that S advances. The control unit 90 controls the transport motor 41a so that the strip S is regularly and continuously transported (or intermittently transported) so that the transport pitch is constant.

  The distance between the group of bags B and the group of bags B is such that the first bag B of the next group of bags B is sealed after the last bag B of the group of bags B is sealed on the strip S. This corresponds to the distance traveled by the strip S. This distance is usually set longer than the above-mentioned transport pitch. A cut 45a formed by the cutter 45 and a hole 46a formed by the punch 46 are formed in the long span portion S2 of the strip S between the group of bags B and the group of bags B (see FIG. 15). In addition, in the short span portion S1 of the strip S formed at the normal transport pitch, a cut by the cutter 45 and a hole by the punch 46 are not usually formed.

  The strip S to which the bag B is attached is, for example, in a state shown in FIG. 15 by the transport control of the strip S and the control of the cutter 45 and the punch 46 as described above. At a retail store or the like to which these items are shipped, the strips S are cut using the cuts 45a so as to be divided into a group of bags B (six bags), and the holes 46a are used as hooks in the store. A strip S with a group of bags B can be hung.

<Stop control of mounting operation and strip transfer operation when weighing failure>
When receiving the weighing failure signal from the weighing machine 2, the control unit 90 continues the operation of the bag making unit 10 in order to ensure high speed, but has been manufactured by filling the weighing failure potato chips C. The bag B is not attached to the strip S but is sorted out and removed. At this time, a part of the attaching operation and the strip carrying operation are not performed temporarily.

  During the mounting operation, the movement operation mechanically linked to the movement of the horizontal sealing mechanism 17 of the bag making section 10 is continuously performed, but the holding operation and the fixing operation are not performed. In other words, the holding mechanism 31 is moved to the holding point P1 by the moving mechanism 32 for the bag B with the weighing error, but the holding mechanism 31 does not operate and the bag B is not held. For this reason, the bag B with poor measurement is manufactured, discharged downward from the horizontal sealing mechanism 17, and then falls directly below. The bag B is sorted to the left or right by a sorting device (not shown). The sorting device applies a force to the bag B from the side by air or a sorting member, and moves the bag B to the left or right, thereby preventing the bag B from being placed on the conveyor 85.

  In addition, the fixing operation by the fixing mechanism 33 is stopped in correspondence with the case where the holding mechanism 31 does not hold the bag B with the weighing error, so that unnecessary heat or pressure is not applied to the strip S. Specifically, the control unit 90 stops the operation of the transport motor 41a to stop the transport of the strip S, stops the operation of the pressing cylinder 33b, and controls the pressing body 33c to wait on the upper side, and controls the solenoid 33e. Is operated to push up the strip S by the dissolution preventing plate 33d and separate it from the heater 33a. This suppresses a problem that an excessive amount of heat flows from the heater 33a into the strip S for which conveyance is stopped and the strip S is deteriorated or melted.

<Control of fixing mechanism when fixing operation is stopped for other reasons>
When the production of the bag B is stopped due to a failure of the bag making unit 10, the weighing machine 2 in the previous process, or a machine in another process, the fixing mechanism 33 of the strip mounting unit 30 is also stopped. In such a case, the control unit 90 stops the operation of the transport motor 41a to stop the transport of the strip S, stops the operation of the pressing cylinder 33b, and controls the pressing body 33c to stand by at the upper side, By operating the solenoid 33e, the strip S is pushed up by the melting prevention plate 33d and separated from the heater 33a. Further, while the transport of the strip S is stopped, the control unit 90 performs control to reduce the temperature, for example, from 190 ° C. to 170 ° C. to 180 ° C. so that the temperature of the heater 33a decreases. With these controls, it is possible to suppress a problem that an excessive amount of heat flows from the heater 33a into the strip S whose conveyance is stopped and the strip S is deteriorated or melted.

  The control of actuating the solenoid 33e to push up the strip S by the dissolution preventing plate 33d and separating the strip S from the heater 33a is performed when the transport of the strip S is stopped. Naturally, when the transport stop time is shorter than a predetermined time. Is not done. The control unit 90 sometimes controls the transport motor 41a so that the strip S is regularly and intermittently transported. However, if the dissolution preventing plate 33d is moved even during the temporary suspension of the transport of the strip S in the intermittent transport. This is because the bag B is not welded to the strip S.

[Features of bag making and packaging machine 1]
(1)
In the bag making and packaging machine 1, the bag B manufactured by the bag making section 10 is attached to the strip S at the strip attaching section 30. In the present bag-making and packaging machine 1 in which the strip attaching portion 30 is provided separately from the bag-making portion 10 as described above, the power from the turning motor 17a, which is a power source for the lateral sealing of the bag B, is used here. The moving operation by the moving mechanism 32 in the mounting operation of the strip mounting portion 30 is performed. For this reason, the moving operation by the moving mechanism 32 is mechanically linked to the movement of the bag making section 10 (lateral sealing mechanism 17). For this reason, there is almost no possibility that the moving operation is shifted with respect to the movement of the bag-making unit 10 due to a control error or the like, and mounting errors or mounting errors of the bag B on the strip S are reduced.

(2)
In the bag making and packaging machine 1, the manufactured bag B is moved downward, not horizontally, by the moving operation of the moving mechanism 32 which is mechanically linked to the movement of the horizontal sealing mechanism 17 at the most downstream of the bag making section 10. It moves diagonally backward while moving. As described above, since the moving direction of the bag B is oblique, in a series of operations from the production of the bag B to the attachment of the bag B to the strip S in the fixing mechanism 33 of the strip attaching portion 30, the movement of the bag B is changed. It is smooth. For this reason, even if the manufacturing of the bags B in the bag making section 10 is performed at a high speed (for example, the setting is made such that 120 or 150 bags B are manufactured per minute), the manufactured bags are moved right below and stripped. As in the case where the bag is attached to the bag B, the attachment of the bag B is hardly hindered.

  Here, the bag B manufactured by the bag making section 10 is moved not diagonally downward but diagonally downward. For this reason, even when the next bag B is manufactured from the horizontal sealing mechanism 17 of the bag making section 10 and is discharged downward, it does not interfere with the previous bag B. That is, since the bag B is shifted in the front-rear direction which is the thickness direction of the bag B, and the bag B is sealed to the strip S at the fixing point P2 which is two-dimensionally shifted from the point P11 at which the manufacturing is completed, The bag B manufactured first and sealed to the strip S and the bag B manufactured next and discharged downward from the horizontal sealing mechanism 17 do not interfere with each other. Since the interference is avoided by moving the bag B diagonally downward instead of directly below, the moving distance of the bag B in the vertical direction due to the moving operation of the moving mechanism 32 can be reduced. I have. That is, in order to avoid the interference while moving the bag B directly below, a moving distance of at least the vertical length (height dimension) of the bag B is required, but here, the bag B is moved obliquely downward. Therefore, the vertical distance between the point P11 or the holding point P1 at which the manufacturing is completed and the fixing point P2 is shorter than the length of the bag B in the vertical direction. Thereby, the height dimension of the entire bag making and packaging machine 1 can be reduced.

Furthermore, since the moving mechanism 32 adopts a configuration in which the bag B is moved obliquely downward without moving horizontally, the sealing jaw 51 and its accessories, which draw a substantially D-shaped trajectory T in the horizontal sealing mechanism 17, and the bag B Can also be avoided.
(3)
In the bag making and packaging machine 1, with respect to the holding operation by the holding mechanism 31 and the sealing operation by the fixing mechanism in the mounting operation of the strip mounting section 30, the power source (the holding cylinder and the pressing cylinder) is different from the power source of the bag making section 10. Cylinder 33b) is prepared. That is, the control unit 90 can temporarily prevent the holding operation and the sealing operation in the strip attaching unit 30 from interlocking with the movement of the bag making unit 10.

  When the control unit 90 receives the weighing failure signal from the weighing machine 2, the control unit 90 continues the operation of the bag making unit 10 in order to secure the high speed, but is filled with the weighing failure potato chips C and manufactured. With respect to the bag B, control is performed so that the holding operation and the sealing operation to the strip S are not performed. This prevents the improperly weighed bag B from being attached to the strip S.

(4)
In the bag making and packaging machine 1, as shown in FIGS. 8 and 9A, the strip S is conveyed in a state of being in contact with the heater 33a. Therefore, when the production of the bag B is stopped due to a failure of the bag making section 10, the weighing machine 2 in the previous process, or a machine in another process, and the fixing mechanism 33 of the strip attaching section 30 is stopped, the strip There is a risk that the same portion of S may be left in contact with the heater 33a for a long time. In such a state, depending on the type of the strip S, the strip S may be altered (discolored or the like) or melted. For example, when the strip S is a paper tape, the heat generated by the heater 33a may cause the strip S to be scorched and discolored, thereby reducing the commercial value. Further, when the strip S is a plastic tape, there is a possibility that the heat generated by the heater 33a may cause the strip S to shrink or be melted.

  On the other hand, when the operation of the transport motor 41a is stopped and the transport of the strip S is stopped, the control unit 90 controls the operation of the pressing cylinder 33b to be stopped and the pressing body 33c to wait on the upper side, By operating the solenoid 33e, the strip S is pushed up by the melting prevention plate 33d and is separated from the heater 33a. Further, the control unit 90 performs control to reduce the temperature, for example, from 190 ° C. to 170 ° C. to 180 ° C. so that the temperature of the heater 33a is reduced while the transport of the strip S is stopped.

  By these controls, an excessive amount of heat from the heater 33a does not flow into the strip S where the conveyance is stopped, and the problem that the strip S is altered or melted is suppressed. Even if the temperature of the heater 33a is lowered by only 10 to 20 ° C., the deterioration and melting of the strip S can be suppressed to some extent. However, the strip S is separated from the heater 33a to ensure that the deterioration and damage of the strip S are prevented. It is suppressed.

In addition, it is desirable that the temperature of the heater 33a to be lowered while the transport of the strip S is stopped is kept to the necessary minimum reduction width as described above. This is because if the temperature of the heater 33a is lowered more than necessary, the time required for returning when the fixing mechanism 33 has to be moved again becomes longer.
(5)
The bag B is attached to the strip S transported by the strip transport unit 41 by the heater 33a and the pressing body 33c of the fixing mechanism 33. The strip S to which the bag B is attached is then sent to a subsequent process by the transport conveyor 85. Therefore, if the cutter or the punch is arranged downstream of the fixing mechanism 33, a mechanism for holding the strip S at the time of forming a cut by the cutter at the downstream of the cutter or the punch becomes necessary.

In view of this, here, the cutter 45 and the punch 46 are arranged on the upstream side of the fixing mechanism 33, and the driving rollers 41c and 41d of the strip transport unit 41 hold the strip S when the cutter 45 cuts the strip S. To play a role.
On the other hand, the dissolution preventing plate 33d is disposed downstream of a point (fixing point P2) where the bag B is attached to the strip S by the heater 33a and the pressing body 33c. At this position, the tip of the anti-dissolution plate 33d is pushed up obliquely forward, so that the strip S is reliably separated from the heater 33a.

(6)
In the bag making and packaging machine 1, the pair of sealing jaws 51 of the horizontal sealing mechanism 17 in the bag making section 10 apply pressure and heat to the upper and lower ends of the bag B while moving downward. As a result, the bag B, the end of which is horizontally sealed, is grasped and moved by the holding mechanism 31 that reciprocates obliquely in the strip mounting section 30.

  In response to the movement and the holding operation of the holding mechanism 31, the pair of seal jaws 51 of the horizontal sealing mechanism 17 are controlled so as to release the manufactured bag B at a fixed height position. Specifically, regardless of the size of the bag B and the type of the film F, the seal jaws 51 are controlled so as to release the holding of the bag B at a point P11 which is a fixing point. Correspondingly, the strip mounting section 30 adopts a configuration in which the holding point P1 for holding the bag B by the holding mechanism 31 is fixed, and the holding mechanism 31 is moved with respect to the holding point P1 which is always fixed. ing. For this reason, the configuration of the strip mounting portion 30, particularly the configuration of the moving mechanism 32 and the control of the moving mechanism 32 are simple, and mounting errors of the bag B on the strip S are reduced.

In a conventional bag making and packaging machine (having no strip mounting function), a point at which seal jaws press each other to start a horizontal seal is often constant, and the size of the bag is large. When the position changes, the end point of the horizontal seal is controlled to shift up and down.
(Modification)
(A)
In the above embodiment, the bags B are attached to one strip S, and a plurality of bags B are sent to a subsequent process in a state as shown in FIG. 15, but as shown in FIG. It is also possible to configure the strip transport section 41 and the fixing mechanism 33 so that the bag B is attached to the two strips S11 and S12.

(B)
In the above embodiment, the heater 33a is fixed, and the dissolution preventing plate 33d moves with respect to the heater 33a. Instead of such a configuration, a configuration in which the heater is moved may be adopted. In this case, the dissolution preventing plate is fixed, and when the transport of the strip is stopped, the heater is moved obliquely downward, and the strip is transferred from the heater to the dissolution preventing plate.

(C)
In the above embodiment, the sandwiched bag B and the strip S are welded by turning the pressing body 33c against the fixed heater 33a. Instead of such a configuration, it is also possible to configure so that both the pressing body 33c and the heater 33a move in a normal strip mounting operation as shown by dotted arrows A1 and A2 in FIG. is there. If the guide roller 133d shown in FIG. 17 is provided so that the strip S is separated from the heater 33a before the operation of the pressing body 33c and the heater 33a, even if the transport of the strip S is stopped for some reason, the heater is used. Unless the 33a is moved, an excessive amount of heat does not flow into the strip S from the heater 33a.

(D)
In the above embodiment, the dissolution preventing plate 33d which is moved by the solenoid 33e is provided, and the structure is such that the dissolution preventing plate 33d pushes up the strip S and separates it from the heater 33a when the transport of the strip S is stopped. Alternatively, by controlling the cutter 45, the strip S and the heater 33a can be separated from each other when the transport of the strip S is stopped.

  Here, as shown in FIG. 18A, the dissolution preventing plate 33d and the solenoid 33e are not provided. Instead, the control unit 90 stops the operation of the transport motor 41a to stop the transport of the strip S, stops the operation of the pressing cylinder 33b, and stops the pressing body when stopping the fixing mechanism 33 of the strip mounting unit 30. After controlling so that 33c waits above, the cutter 45 is operated to cut the strip S before the heater 33a. As a result, the state in which the strip S is in contact with the heater 33a disappears, and the strip S does not deteriorate or melt.

  In this case, as shown in FIG. 18B, it is desirable that the strip S be curled (curved) so that the cross section of the strip S draws an arc. By providing guide members (not shown) above and below the strip S, the strip S can be held in a curled state near the cutter 45. If the strip S is curled in this way, when the strip S is cut by the cutter 45 and then sent again above the heater 33a, the bag B is attached to the strip S only by operating the transport motor 41a. Operation resumes.

1 is a side view of a bag making and packaging machine according to an embodiment of the present invention. The front view of a bag making and packaging machine. The schematic perspective view of a bag-making part. FIG. 4 is a schematic side view of a strip mounting section and a strip transport section. FIG. 3 is a schematic front view of a strip mounting section and a strip transport section. FIG. 3 is a schematic perspective view of a holding mechanism. The figure which shows the power transmission path | route of a movement mechanism. FIG. 4 is a diagram illustrating a structure related to driving of a pressing body of a fixing mechanism. (A) A schematic side view of a fixing mechanism including a dissolution preventing plate in a normal state. (B) A schematic side view of the fixing mechanism including the anti-dissolution plate when the strip conveyance is stopped. FIG. 4 is a schematic side view showing one state of a strip mounting section and a strip transport section. The side view of a tension adjustment mechanism. The control block diagram. The figure which shows the movement of the seal jaw of a horizontal sealing mechanism. The figure which shows the other movement of the seal jaw of a horizontal sealing mechanism. The perspective view showing the state of the bag attached to the strip. The perspective view showing the state of the bag attached to the strip in modification (A). (A) The side schematic diagram before the attachment operation | movement of the fixing mechanism containing the fixed dissolution prevention plate of the modification (C). (B) Schematic side view during attachment of a fixing mechanism including a fixed / dissolution preventing plate of a modified example (C). (A) Schematic side view of a fixing mechanism of a modified example (D). (B) The figure which shows the strip in the vicinity of the cutter of the fixing mechanism of the modification (D).

Explanation of reference numerals

1 Bag making and packaging machine 10 Bag making part (bag making mechanism)
Reference Signs List 30 strip mounting portion 31 holding mechanism 32 moving mechanism 33 fixing mechanism (mounting mechanism)
33a heater (part 1)
33b Pressing Cylinder 33c Pressing Body (Second Part)
33d Dissolution prevention plate (separation means)
33e solenoid (separation means)
41 Strip Transport Unit (Band Transport Mechanism)
90 control section B bag C potato chips (product)
F film S strip (band)

Claims (10)

A bag-making mechanism for producing bags filled with goods,
A belt transport mechanism for transporting the belt;
A holding mechanism for holding the bag manufactured by the bag making mechanism, wherein the bag held by the holding mechanism is moved to a fixed position disposed obliquely downward in conjunction with the movement of the bag making mechanism. A moving mechanism;
An attachment mechanism for attaching the bag to the band,
With
The mounting mechanism,
A first part that generates heat and is capable of contacting the band;
A second part that sandwiches the bag that has been moved obliquely downward by the moving mechanism and the band that has been conveyed by the band conveying mechanism together with the first part, and welds the bag and the band;
A separation unit that separates the band and the first part when the conveyance of the band is stopped by the band conveyance mechanism;
Having,
Bag making and packaging machine. The belt transport mechanism transports the belt while the belt is in contact with the first part.
The bag making and packaging machine according to claim 1. The separating means contacts the band and separates the band from the first portion;
The bag making and packaging machine according to claim 1. The separating means moves the first part to separate the first part from the band;
The bag making and packaging machine according to claim 1. The separating unit is disposed upstream of the first portion in the transport direction of the band, and cuts the band.
The bag making and packaging machine according to claim 1. The mounting mechanism further includes a control unit that controls heat generation of the first unit,
The control unit performs control such that heat generation of the first unit is reduced when the conveyance of the band is stopped by the band conveyance mechanism.
A bag making and packaging machine according to any one of claims 1 to 5. The separation unit determines that the conveyance of the band by the band conveyance mechanism is continued when the conveyance stop time of the band by the band conveyance mechanism is equal to or less than a predetermined time.
A bag making and packaging machine according to any one of claims 1 to 6. The holding mechanism and the mounting mechanism are controlled so as not to temporarily interlock with the movement of the bag making mechanism,
A bag making and packaging machine according to any one of claims 1 to 7. The bag making mechanism has a pair of seal jaws that perform horizontal sealing by applying heat and pressure to the bag while moving downward.
The bag making and packaging machine according to any one of claims 1 to 8. The pair of sealing jaws release the holding of the bag at a certain height position,
A bag making and packaging machine according to claim 9.

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