JP2017013872A - Ironing device in vertical packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanical structure for determining a squeezing path of a squeezing rod for squeezing a tubular packaging material in a vertical bag wrapping machine by a cam mechanism provided with a simple cam structure instead of a cam groove structure. Provide an ironing device. SOLUTION: An ironing rod 25 provided in an ironing unit 1 advances toward a tubular packaging material as the horizontal heater unit 2 and the ironing unit base 11 advance. The means for causing the ironing rod 25 to perform the ironing operation is realized not by a cam groove structure but by a simple cam structure in which the cam follower 30 follows the cam surface of the fixed cam plate. The ironing lever 24 rotates around the rotating shaft 23, and the ironing rod 25 performs the ironing operation. In the return path in which the ironing rod 25 retracts in the direction away from the packaging material at the ironing end position and the ironing unit 1 returns to the initial position, the cam follower 30 is separated from the cam surface of the cam plate by the operation of the air cylinder 40. Return. [Selection diagram] Fig. 1

Description

  The present invention relates to a vertical bag packaging machine including a horizontal heater unit that forms a bag for packaging a product by applying a horizontal seal to a cylindrical packaging material, such as a vertical bag making filling and packaging machine. The present invention relates to an ironing device that operates in conjunction with a horizontal heater unit and applies ironing action to a range including a horizontal seal planned region of the cylindrical packaging material in which the product is filled through.

  For bagging of products into bags, moving the product position within the bag or improving the product filling rate by pushing the product into the bag from the outside of the bag during bag packaging. There are things to plan. Examples of the product to be ironed by the product filled in the bag include a pu (food made from coarse flour). The package is forcedly squeezed from the outside of the bag so that the package does not move into the elongated bag after packaging. Other product examples include snacks such as potato chips and corn puffs, and frozen foods such as frozen potatoes, green beans, and pumpkins. These products vary in length, and depending on the dancing state of the product at the time of filling, it may jump up to the horizontal seal position. Biting occurs. Therefore, it is necessary and effective to move the product in advance from the operating position of the heat seal bar by squeezing the bag.

  As an ironing device used in connection with a vertical packaging machine such as a vertical bag making filling and packaging machine, the horizontal seal unit used in the vertical packaging machine uses the operation when horizontal sealing is applied to the cylindrical packaging material. And there is something that performs squeezing operation. For example, there is a type in which the entire horizontal seal box is moved up and down and some of the stroke is used as an operation for the ironing operation. Apart from this, the horizontal seal box does not move up and down, but a separate drive source such as a cylinder is provided, and the separate drive source performs the ironing operation on the ironing member during the opening and closing of the horizontal seal block. is there.

  The present applicant, as a squeezing device of a vertical bag making filling and packaging machine, after ground sealing the packaging cylinder with a horizontal heater and dropping and filling the product as a product into the packaging cylinder, The ironing device has been proposed in which the horizontal heater is sandwiched from the same direction as the horizontal heater, and the product is squeezed below the horizontal heater before the horizontal heater is closed (patent document). 1). According to the ironing device of this vertical bag making filling and packaging machine, when the horizontal heater opens, the ironing bar opens so as not to hit the product falling in the packaging cylinder, passes through the inside of the horizontal heater, and rises higher than the horizontal heater. To do. Next, when the horizontal heater is closed, the ironing bar is closed before the horizontal heater, passes through the inside of the horizontal heater, and descends to a position below the horizontal heater. At that time, the product accumulated in the height equal to or higher than the horizontal heater or the product in the middle of dropping is squeezed out to prevent the product from being caught in the horizontal heater. Thereafter, horizontal sealing by a horizontal heater is performed.

  In addition, the applicant linked with the operation that each horizontal seal portion approaches the cylindrical packaging material for sealing the cylindrical packaging material from the initial position occupied when each horizontal seal portion is in a separated state. In the forward operation, the ironing path contacts the cylindrical packaging material through the ironing path and moves downward, and interlocks with the operation in which each horizontal seal portion separates from the cylindrical packaging material after sealing. An ironing device including an ironing member that returns to the initial position by following a return path that moves away from the cylindrical packaging material at the time of backward operation, and is provided at each of the lateral seal portions. A first cam mechanism that defines the ironing path and the return path of each ironing member, and the engagement state of the ironing part is switched between the forward movement and the backward movement. And the ladder A second cam mechanism that directly cam-engages the ironing portion and defines a ironing side limit of the ironing path of each ironing member. The first cam mechanism includes a cam groove and each ironing iron. A movable cam plate that switches a position occupied when the member reaches the end of the ironing path and when the member reaches the end of the return path, and a first cam that is provided in the ironing portion and fits in the cam groove. 1 cam follower is provided, and the cam groove occupies one position of the movable cam plate, and the cam for rotation through which the first cam follower passes correspondingly when the ironing member follows the ironing path. And when the movable cam plate is switched to move to the other position and when the ironing member follows the initial stage of the return path. To propose the ironing device consists of and a delay cam groove to pass without the first cam follower is changing the attitude of the ironing member (see Patent Document 2).

  According to this ironing device, in the backward operation in which the ironing member moves away from the cylindrical packaging material, the ironing route follows a return path that is different from the ironing path in the forward operation in which the ironing member approaches and irons. The operation is prevented from interfering with the packaging operation or the packaging material. Further, since the ironing path and the return path are determined by mechanical mechanisms of the first cam mechanism and the second cam mechanism, respectively, the ironing member surely follows the ironing path and a return path different from the ironing path. I am trying. Further, since the second cam mechanism defines the ironing side limit of the ironing path of each ironing member, the ironing member is designed not to be too close to the cylindrical packaging material beyond the ironing side limit. . Further, in the forward movement of the lateral seal portion, the second cam mechanism determines the ironing side limit of each ironing member in response to the first cam follower passing through the rotating cam groove portion in the first cam mechanism. The member follows the ironing path. When the ironing member reaches the end of the ironing path, the position of the movable cam plate is switched, but the first cam follower only passes through the delay cam groove, and the posture of the ironing member does not change. In the backward operation of the lateral seal portion, the operation of the ironing member is delayed while the first cam follower passes through the delay cam groove portion in the reverse direction (direction connected to the rotation cam groove portion). At this time, the ironing member does not substantially change its posture, and the ironing member moves backward toward the rear side with respect to the tubular packaging material. Thereafter, the ironing portion follows the return path, but does not interfere with the cylindrical packaging material and push up. When the ironing member reaches the end of the return path, the movable cam plate is switched to return to the initial state.

  Further, the applicant of the present invention provides an ironing drive unit which is provided for each horizontal seal part and is operated in conjunction with an operation of contacting and separating the horizontal seal parts, and a tubular packaging material driven by the ironing drive part. An ironing mechanism having an ironing member that contacts and exerts an ironing action, and is disposed between the frame on which the horizontal seal unit is arranged and the ironing drive unit, and reciprocates to the ironing drive unit for the ironing operation. A driving cam mechanism for providing an operation; and a cam mechanism for a path that is disposed between a frame in which the horizontal seal unit is disposed and the ironing member and that drives the ironing member driven by the ironing drive unit. The path cam mechanism includes a path fixed cam plate in which a path cam groove corresponding to the ironing path is formed, and a path cam follower provided in the ironing member and fitted in the path cam groove. The ironing mechanism has a relative displacement that occurs between the ironing drive unit that reciprocates by the driving cam mechanism and the ironing member that follows the ironing route by the path cam mechanism when driven by the ironing driving unit. Has been proposed (see Patent Document 3).

  According to this ironing device, when the ironing drive unit of the ironing mechanism performs the cam operation by the driving cam mechanism and drives the seal member according to the operation in which the horizontal seal part approaches or separates from the packaging material, another path is provided. An ironing path followed by the ironing member of the ironing mechanism is determined by the cam mechanism. When following this ironing path, the ironing member comes into contact with the cylindrical packaging material and gives a ironing action. Therefore, even if the packaging speed is increased, the ironing member moves along the only predetermined ironing path, and it is possible to prevent a violent operation. The path cam mechanism includes a path fixed cam plate in which a path cam groove corresponding to the ironing path is formed, and a path cam follower provided in the ironing member and fitted in the path cam groove. Is driven, the path cam follower is guided in a state of being fitted in the path cam groove, and the ironing bar performs a stable ironing operation without shaking along a predetermined ironing path. Furthermore, the ironing mechanism can absorb the relative displacement that occurs between the iron driving unit that reciprocates by the driving cam mechanism and the iron member that follows the ironing path by the path cam mechanism when driven by the iron driving unit. Therefore, the ironing member moves along the ironing route by the route cam mechanism in accordance with the reciprocating operation performed by the ironing drive unit. The ironing path is a path determined by the cam mechanism for the path, but mechanical interference / competition occurs between the ironing drive unit and the ironing member by making it possible to absorb the relative displacement that occurs between them. Can be avoided.

  In the conventional ironing device, a shutter is arranged on the top and bottom of the horizontal seal unit so as to prevent the product from falling by sandwiching the cylindrical packaging material from the outside, and the horizontal sealer unit moves up and down. There is a type of ironing device that does. In this case, the product (granular fragments) sandwiched between the upper and lower shutters cannot be excluded from the planned horizontal seal area and remains between the shutters. In addition, when ironing the cylindrical packaging material with an old type of ironing bar, when the ironing bar that performed the ironing operation when moving downwards is about to return to the upper position immediately after that, There is an inconvenience that the squeezing bar comes into contact with the cylindrical packaging material that is lowered to form the next bag and lifts the cylindrical packaging material.

  In the conventional type ironing device, the cam mechanism that determines the path of the ironing member as the cam follower traces is a complicated mechanism in which the cam follower is fitted, such as the first cam mechanism, the second cam mechanism, and the path cam groove. It is provided with a cam groove structure that is shaped and formed with high accuracy, and it is inevitable that the production of the cam mechanism is costly and troublesome. Furthermore, the operation of the ironing device is uniquely determined by the cam mechanism manufactured in the groove structure, and it is difficult to give flexibility to the operation of the ironing rod depending on the case and the situation.

Japanese Patent Publication No. 06-76087 (paragraphs [0007] to [0011], FIGS. 1 to 3) Japanese Patent No. 533273 (paragraph [0037], FIG. 9) Japanese Patent No. 5433231 (paragraph [0030], FIG. 3)

  Therefore, in a vertical bag packaging machine provided with a horizontal heater unit that forms a bag for packaging products by applying a horizontal seal to the cylindrical packaging material, the horizontal heater unit is a cylindrical packaging material for applying a horizontal seal. For the ironing device that operates in conjunction with the approaching / separating operation with respect to the product and performs the ironing operation within the range including the planned horizontal seal area of the cylindrical packaging material filled through the interior, The mechanical structure that determines the ironing path of the ironing rod that performs the ironing operation should be solved in terms of realizing a simpler cam structure rather than a cam groove structure, and making the ironing operation flexible. There are challenges.

An object of the present invention is to solve the above-mentioned problems, and in the above-described vertical bag packaging machine, a mechanical structure that defines an ironing path of an ironing bar that performs an ironing operation on a cylindrical packaging material has a simple cam. It is to provide an ironing device provided by a cam mechanism comprising a structure.
In addition, the horizontal heater unit operates in conjunction with the movement toward and away from the cylindrical packaging material, and sandwiches the cylindrical packaging material at a position above the area where the horizontal sealing is planned to place the product into the cylindrical packaging material. In the case where a shutter to be received is provided, an ironing device capable of avoiding biting of granular fragments of the product as much as possible at the time of lateral sealing in consideration of the arrangement of the shutter and the ironing rod that occupies the ironing operation start position Is to provide.
In addition, the path for the forward movement of the ironing bar is determined by the cam surface, but for the backward movement, the path is not determined by the cam. It is to provide a squeezing device that enables a user to move away from a bag to be moved away at a suitable time and effectively and quickly return to the starting position of the squeezing path (starting position of the closing operation).

  In order to solve the above problems, an ironing device in a vertical bag packaging machine according to the present invention is the above vertical bag packaging machine, wherein the cam follower follows the cam surface of a fixed cam plate during the forward operation of the ironing operation. The ironing unit has an ironing bar having an ironing bar that follows the ironing path and follows the return path when the ironing operation is restored. In the ironing unit, the ironing bar includes the horizontal heater unit and the horizontal seal unit. Before abutting against the cylindrical packaging material for applying the wrapping material, the cylindrical packaging material is abutted against the cylindrical packaging material at a squeezing start position when following the first half of the squeezing path and when following the latter half of the squeezing path. While moving in a downward direction while being in contact with the planned horizontal seal area of the material, the ironing operation is performed on the planned horizontal seal area. After the lateral heater unit is separated from the tubular packaging material, the return path starts to be traced, and the cam follower is separated from the cam surface of the cam plate when the return path is traced. , And retreating from the ironing end position in a direction away from the cylindrical packaging material.

  According to the ironing device in this vertical bag packaging machine, the ironing bar provided in the ironing unit follows the ironing path according to the cam follower following the cam surface of the fixed cam plate during the ironing operation. Is. Therefore, the means for causing the ironing bar to perform the ironing operation is realized not by the cam groove structure but by a simple cam structure in which the cam follower follows the cam surface. Further, when the ironing rod follows the return path from the end position of the ironing operation to the start position, the path is not uniquely determined by the cam groove structure, but the cam follower moves backward with the cam plate away from the cam surface. Therefore, it is possible to give flexibility to the return operation such as the rising timing of lifting the iron rod when returning to the start position of the ironing operation.

In the ironing device in the vertical bag packaging machine, the ironing unit includes an ironing bar base that operates in conjunction with an operation in which the horizontal heater unit approaches and separates from the tubular packaging material, and the ironing bar base. On the other hand, an ironing lever is provided that is rotatable about a rotation axis parallel to the ironing bar. The ironing lever has the ironing bar at a tip portion and the cam follower at a rear end portion. When the ironing unit advances toward the cylindrical packaging material, the cam follower follows the cam surface of the cam plate, whereby the ironing rod follows the ironing path, As the ironing lever rotates about the rotation axis, the ironing bar can follow the latter half of the ironing path and perform the ironing operation.
According to this ironing device, the ironing unit is simply assembled by the ironing rod base, the rotating shaft, and the ironing lever having the ironing rod and the cam follower, and the ironing unit is operated by the cam action of the cam follower and the cam plate. The stick can be made to follow the ironing path, and when the latter half of the ironing path is followed, the ironing action can be made.

In the ironing device in the vertical bag packaging machine, the ironing unit includes an air cylinder that connects the ironing lever to the ironing bar base, and the air cylinder follows the return path of the ironing bar. Actuating at an arbitrary timing to rotate the ironing lever so that the ironing rod is lifted and the cam follower is in contact with the cam surface of the cam plate to return to the initial position of the ironing path It can be.
According to this ironing device, since the air cylinder determines the path to be followed when the ironing bar returns to the initial position of the ironing path, the return timing and the return speed of the ironing bar are determined by the control of the cylinder. It can be arbitrarily determined and a return operation with flexibility can be obtained.

In the ironing device in the vertical bag packaging machine, the air cylinder moves backward in the direction in which the ironing bar is separated from the cylindrical packaging material in response to the operation of separating the horizontal heater unit from the cylindrical packaging material. It can be activated when finished.
According to this ironing device, after the horizontal heater unit is separated from the tubular packaging material and the horizontal seal surface is fully opened, the air cylinder is operated to move the ironing rod to the starting position of the ironing path (the starting position of the closing operation). ), The ironing bar will move back up and then move up. Accordingly, the ironing bar does not interfere with lifting the cylindrical packaging material that is lowered for forming the next bag, and does not affect the feeding of the packaging material.

In the ironing device in the vertical bag packaging machine, a spring and a stopper for regulating a distance when approaching each other are provided between the horizontal heater unit and the ironing unit. The operation of causing the ironing unit to perform the ironing operation via the spring when performing the operation of approaching the cylindrical packaging material, and separating the tubular packaging material after applying the lateral seal. When the horizontal heater unit is in contact with the ironing unit via the stopper, the ironing unit can maintain the ironing end position by the action of the restoring force of the spring.
According to this ironing device, when the horizontal heater unit performs an operation of separating the cylindrical packaging material after the horizontal seal is applied to the cylindrical packaging material, only the horizontal heater unit initially performs a return operation to perform the ironing operation. The bar maintains the ironing end position in contact with the cylindrical packaging material by the action of the restoring force of the spring. After the horizontal heater unit is further retracted and approaches the interval regulated by the stopper with respect to the ironing unit, that is, after contacting the ironing unit via the stopper, the horizontal heater unit is used together with the ironing unit (ironing bar). fall back. Therefore, when only the horizontal heater unit returns, the ironing rod maintains the ironing end position, so that the horizontal heater unit tries to move while adhering the bag with the heat. Can be removed from the horizontal heater unit.

In the ironing device in the vertical bag packaging machine, the vertical bag packaging machine operates in conjunction with the ironing unit in conjunction with the operation in which the horizontal heater unit approaches and separates from the cylindrical packaging material, A shutter for receiving the product in the cylindrical packaging material by sandwiching the cylindrical packaging material at a position above the planned horizontal sealing region is provided, and the squeezing bar sandwiches the cylindrical packaging material An interval between the shutter and the shutter can be set as narrow as possible. According to this ironing device, the range between the shutter and the ironing rod, which sandwiches the product in the cylindrical packaging material by sandwiching it at a position above the region where the horizontal seal is planned, is a sufficiently narrow range. May stick to the inside of the cylindrical wrapping material, but the product debris is confined within this narrow area, and after that, in the area of the side seal where the squeezing bar has acted squeezing action, nothing is bitten. A horizontal seal can be applied with no inclusions remaining.
In this case, when the vertical bag packaging machine includes the shutter that operates together with the ironing unit, the spring is provided in a compressed state between the horizontal heater unit and the shutter. This restoring force can act on the ironing unit via the shutter. At the beginning when the horizontal heater unit returns to the direction away from the cylindrical packaging material, the restoring force of the spring is received by the shutter that sandwiches the cylindrical packaging material, and the ironing unit (the ironing bar) Keep the ironing end position.

In the ironing apparatus in this vertical bag packaging machine, the vertical packaging machine is arranged inside the cylindrical packaging material and is filled with the filling cylinder into which the product to be packaged is charged, and the cylindrical packaging material. It can be said that it is a vertical bag making filling and packaging machine provided with a feed mechanism that feeds in the vertical direction along the vertical direction along the outer peripheral surface of the cylinder.
According to this ironing device, by applying to a vertical bag making filling and packaging machine as a vertical packaging machine, products put through the filling cylinder can be successively and continuously packaged at a high packaging speed.

  Since the ironing device in the vertical bag packaging machine according to the present invention is configured as described above, the ironing bar provided in the ironing unit is operated so that the cam follower follows the cam surface of the fixed cam plate during the ironing operation. It follows the ironing route according to the operation. Therefore, the means for causing the ironing bar to perform the ironing operation is realized not by the cam groove structure but by a simple cam structure of the cam follower and the cam surface following operation. Also, in the return path of the ironing rod, the cam follower does not return via a path uniquely defined by the cam groove structure, but retreats away from the cam surface of the cam plate, so that the initial position of the ironing path is reached. Interferences such as giving flexibility to the return operation such as the timing when returning, and lifting the cylindrical packaging material that is lowered to form the next bag can be avoided. The starting position of squeezing to the cylindrical packaging material with the squeezing bar can be set to any desired position by setting the cam surface of the cam plate, so granular materials such as product debris can be removed from the planned horizontal sealing area of the cylindrical packaging material. It can be surely squeezed out, and the occurrence of biting in the region where the cylindrical packaging material is scheduled to be sealed can be minimized.

FIG. 1 is a perspective view showing the entirety of a seal / ironing unit used in an ironing device in a vertical packaging machine according to the present invention. FIG. 2 is a perspective view showing a portion related to the horizontal heater taken out from the seal / ironing unit shown in FIG. FIG. 3 is a perspective view showing the seal / ironing unit shown in FIG. 1 with the portion related to the horizontal heater shown in FIG. 2 and the air cylinder removed. FIG. 4 is a perspective view showing the seal / ironing unit shown in FIG. 1 with the portion related to the horizontal heater shown in FIG. 2 removed. FIG. 5 is a process diagram illustrating the closing (squeezing) operation and the opening (squeezing release) operation of the ironing unit in the seal / ironing unit. FIG. 6 is a partial view for explaining the operation of the horizontal heater block, the shutter and the ironing bar in the seal / ironing unit. It is a perspective view which shows an example of the conventional vertical bag making filling packaging machine.

Embodiments of the ironing device in a vertical packaging machine according to the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view showing the entire seal / ironing unit used in the ironing apparatus in the vertical packaging machine according to the present invention, and FIG. 2 is a diagram showing a portion relating to the horizontal heater taken out from the seal / ironing unit shown in FIG. FIG. 3 is a perspective view showing the seal and ironing unit shown in FIG. 1 with the portion related to the horizontal heater shown in FIG. 2 and the air cylinder removed, and FIG. 4 is shown in FIG. It is a perspective view which removes the part regarding the horizontal heater shown in FIG. 2 from a seal | sticker and ironing unit.

  The ironing apparatus according to the present embodiment is applicable to a known vertical bag making filling and packaging machine. As shown schematically in FIG. 7, the vertical bag making and filling machine 50 includes a former 51 that bends the web-like packaging material Fw into a substantially cylindrical shape, and a product filling cylinder 52 that is inserted into the former 51. The vertical sealing device 53 for forming the packaging material bent on the front side of the product filling cylinder 52 into the cylindrical packaging material Ft and the left and right sides of the product filling cylinder 52 are sandwiched between the cylindrical packaging material Ft. A feed belt device 55 that feeds between the outer surfaces of the product filling cylinders 52 and a lateral seal unit 54 provided below the product filling cylinders 52 are provided. The continuous web-shaped packaging material Fw is guided to the former 51, bent into a cylindrical shape so as to wrap the product filling cylinder 52, and is sent downward by the feed belt device 55, and is vertically sealed on one side of the product filling cylinder 52. The web 53 is formed into the cylindrical packaging material Ft by longitudinally heat-sealing the web edges. By dropping and filling the product S, which is an article to be packaged, into the cylindrical packaging material Ft through the product filling cylinder 52, and sealing the cylindrical packaging material Ft at both the upper and lower positions of the filled product S, The bag package Bp in which the product S is packaged can be continuously manufactured.

  As shown in FIG. 7, the horizontal seal unit 54 includes horizontal seal portions 54 a and 54 b that are arranged to face each other with the cylindrical packaging material Ft interposed therebetween, and incorporates a cutter 56. The cutter 56 is disposed so as to be capable of advancing and retreating toward the other horizontal seal portion 54b, for example, between a pair of upper and lower heat seal bars of a heater block provided in one horizontal seal portion 54a. The other horizontal seal portion 54b is formed with a cutter groove 57 into which the advanced cutter 56 can enter between a pair of upper and lower heat seal bars of the heater block. The lateral seal unit 54 approaches and separates from the side during its operation, and the lateral seal portions 54a and 54b sandwich the tubular packaging material Ft and are formed following the mouth of the preceding bag packaging body Bp. Heat seal the bottom of At this time, the cutter 56 advances to a position in the cutter groove 57, cuts the cylindrical packaging material Ft, and separates the previously manufactured bag packaging body Bp from the subsequent bag B (cylindrical packaging material Ft). To do. Although not shown, the product S to be put in is temporarily received on the way above the lateral seal unit 54, and when the lateral seal portions 54a and 54b are separated, the received product S is released to the bottom of the bag 62. A shutter to be thrown in can also be provided. In addition, the outline of the ironing arms 59 of the conventional structure and the ironing bar 59 provided over the front-end | tip part is shown.

  In order to drive the horizontal seal unit 54, a drive mechanism that uses the output of a drive motor such as a servo motor (not shown) or an actuator such as an air cylinder is used. As an example of the drive mechanism, similarly to the mechanism described in Patent Document 1, a horizontal seal opening / closing lever (hereinafter abbreviated as “lever”) is rotated, and the rotation is converted into a conversion mechanism such as a screw mechanism. A mechanism for moving the lateral seal portions 54a and 54b closer to and away from each other in synchronization with each other can be given.

  1 to 4 show a seal and ironing unit 1 used in the ironing device in the vertical packaging machine according to the present invention, which is disposed on one side of the cylindrical packaging material. The vertical wrapping machine is provided with a seal and ironing unit on each side of the cylindrical packaging material, and both the seal and ironing unit cooperate with each other on the planned horizontal sealing portion of the cylindrical packaging material. When there is adhesion of product debris or the like to the portion where the horizontal seal is planned, the depositing action is performed to push the deposit downward, and the horizontal seal is applied to the portion where the horizontal seal is scheduled. 1 to 4 show only the seal / ironing unit 1 disposed on one side. Further, the vertical packaging machine may be a conventionally used vertical bag making and filling packaging machine, and a detailed description thereof will be omitted.

  FIG. 2 shows a portion related to the horizontal heater in the seal and ironing unit 1 shown in FIG. The horizontal heater unit 2 shown in FIG. 2 includes a horizontal heater block base 3 having a horizontally elongated block shape, and a horizontal heater block 6 attached to the front surface 4 of the horizontal heater block base 3. The horizontal heater block 6 has a length W sufficient to apply a horizontal seal to the flat crushed cylindrical packaging material. The lateral seal surface 7 of the lateral heater block 6 has a sufficient seal height (lateral seal width) H to obtain a lateral seal of the bag on the flat crushed cylindrical packaging material. As embodied in the horizontal seal unit 54 shown in FIG. 7, it is possible to incorporate a cutter device for separating the bag package from the cylindrical packaging material into the horizontal heater unit 2. The horizontal heater unit 2 is driven by a driving device (not shown) so as to advance and retreat with respect to the front and rear direction, that is, with respect to the cylindrical packaging material.

  The horizontal heater unit 2 is provided with an ironing unit 10 for ironing the cylindrical packaging material. An ironing unit base 11 that supports the ironing unit 10 is attached to the upper surface 5 of the horizontal heater block base 3 of the horizontal heater unit 2. The ironing unit base 11 is a bar-like member extending along the longitudinal direction of the horizontal heater block base 3, and is provided with bearing holes 11a formed at two positions on both ends in the longitudinal direction for guiding a slide shaft described later. 11a and loading holes 11b and 11b for attaching stoppers which also serve as spring receivers are formed so as to open to the front surface (rear surface) 13. The ironing unit base 11 is attached to the horizontal heater block base 3 by screwing an appropriate fixing tool such as a mounting bolt passed through the mounting holes 11 c and 11 c opened in the upper surface 12 to the horizontal heater block base 3.

  As shown in FIG. 3, the ironing unit 10 also has a shutter function that prevents the product from falling into a bag to be laterally sealed. On the ironing unit base 11, a shutter unit 14 and an ironing bar unit 15 are supported so as to be slidable in the front-rear direction. More specifically, the ironing unit base 11 is provided with slide shafts 17 and 17 slidable in the front-rear direction via slide bearings 16 and 16 attached to the bearing holes 11a and 11a. The shutter unit 14 is disposed at the front end 17a of the slide shafts 17 and 17, and the ironing bar unit 15 is disposed at the rear end 17b of the slide shafts 17 and 17. Since the ironing unit 10 is attached to the horizontal heater unit 2, the ironing bar unit 15 is scheduled to be used for horizontal sealing of the cylindrical packaging material in accordance with the movement of the horizontal heater unit 2 with respect to the cylindrical packaging material. Perform the ironing operation on the part including the part.

  The shutter unit 14 includes a shutter base plate 18 attached to the front end 17a of the slide shafts 17 and 17, and a shutter 19 attached to the front surface of the shutter base plate 18. The shutter 19 cooperates with the counterpart shutter to sandwich the cylindrical packaging material from the outside in the front-rear direction at a position directly above the horizontal packaging unit 2 with respect to the cylindrical packaging material. Is a member that prevents the product from falling below the shutter when the cylindrical packaging material is filled. The shutter 19 has a lateral length that is equal to or greater than the lateral width of the flat cylindrical packaging material. Conventionally, there are shutters that are used as two shutters (an upper shutter and a lower shutter) that operate at two positions sandwiching a horizontal seal planned area vertically, but the shutter of this embodiment corresponds to the upper shutter. Only one shutter is used, and the lower shutter itself is not used.

  Between the ironing unit base 11 and the shutter base plate 18, coil springs 20, 20 are provided at positions inside the slide shafts 17, 17 in such a manner that their coil axes are arranged in the front-rear direction. When the ironing unit base 11 tries to move forward further together with the horizontal heater unit 2, the shutter 19 cannot cooperate with the counterpart shutter and cannot move further when it comes into contact with the cylindrical packaging material. The ironing unit base 11 can advance by further compressing the coil springs 20 and 20. Conversely, when the ironing unit base 11 returns to the rear, the ironing unit base 11 moves backward in a state where the shutter 19 is urged by the restoring force of the coil springs 20 and 20 to contact the cylindrical packaging material. To do.

  The ironing bar unit 15 disposed at the rear end of the slide shafts 17 and 17 includes an ironing bar base 21 attached to the slide shafts 17 and 17, and an air cylinder mounting base 22 fixed to the ironing bar base 21. The rotating shaft 23 disposed on the ironing rod base 21, a pair of ironing levers 24, 24 that are rotatably supported around the rotating shaft 23 at both ends of the rotating shaft 23, and the ironing levers 24, 24. The ironing rod 25 is provided across the front end. The iron bar base 21, the rotation shaft 23, and the iron bar 25 all extend in parallel to the direction in which the horizontal heater unit 2 extends.

  Between the ironing unit base 11 and the ironing bar base 21, a stopper 26 is loaded in, for example, the loading holes 11b and 11b of the ironing unit base 11 so as to move integrally when both approach each other more than a certain distance. Are provided. The stopper 26 is a spring receiver that receives the ends of the coil springs 20 and 20 on the shutter unit 14 side. The stopper 26 does not advance further when the shutter unit 14 and the ironing bar unit 15 are moved forward relative to the ironing unit base 11 under the action of the restoring force of the coil springs 20 and 20. Regulate distance. Therefore, when the horizontal heater unit 2 moves forward, the ironing bar unit 15 is moved through the stopper 26 through the stopper 26 until the tip of the shutter 19 comes into contact with the cylindrical packaging material. After following the horizontal heater unit 2 while being in contact with the base 11 (that is, keeping an interval determined by the length of the stopper 26), the side of the shutter 19 is in contact with the cylindrical packaging material. The heater unit 2 further advances while compressing the coil springs 20, 20, and is separated from the contact with the ironing bar unit 15 via the stopper 26, and the seal surface 7 is pressed against the horizontal sealing scheduled region of the cylindrical packaging material. Then, the horizontal seal is started. In addition, when the horizontal heater unit 2 moves backward after the horizontal seal, the shutter unit 14 and the ironing bar unit 15 maintain a position where they abut against the cylindrical packaging material by the action of the restoring force of the compressed coil springs 20 and 20. Then, when the ironing unit base 11 approaches the ironing bar base 21 to the length of the stopper 26 (the ironing unit base 11 contacts the ironing bar base 21 through the stopper 26), the shutter unit 14 and the ironing bar unit. 15 moves backward together with the lateral heater unit 2.

  The pair of ironing levers 24, 24 are rotatably supported by the ironing bar base 21 by the rotary shaft 23 at a position near the center rear. Each ironing lever 24 includes a straight long plate-like portion 27 at the center in the longitudinal direction, a tip portion 28 that continues to bend toward the tip side of the plate-like portion 27, and a rear end portion 29 that follows the rear end side of the plate-like portion 27. And. The ironing rod 25 is bridged between the front ends of the ironing levers 24, 24, that is, between the pair of tip portions 28, 28. Cylindrical cam followers 30 and 30 are provided at rear ends of the squeezing levers 24 and 24, that is, at a pair of rear end portions 29 and 29. The cam followers 30 and 30 abut on a fixed cam plate 35 (see FIG. 5) on the cylindrical peripheral surface.

  The air cylinder mounting base 22 fixed to the ironing bar base 21 includes an arm 31 for mounting the air cylinder at the tip. As shown in FIG. 4, a mounter 32 for the air cylinder 40 is swingably attached to the distal end portion of the arm 31 of the air cylinder mounting base 22. The cylinder block 41 of the air cylinder 40 is attached to the mounter 32, and the tip of the output rod 42 that can be moved into and out of the air cylinder block 41 based on the air supply / discharge operation is the rotation shaft 23 of each ironing lever 24. And a tip portion 28 are pivotally connected at an intermediate position. Since the surface on which the mounter 32 can swing is parallel to the rotational surface of the ironing lever 24, when the output rod 42 moves in and out of the air cylinder block 41 during operation of the air cylinder 40, The rods 42 respectively rotate with respect to the air cylinder mounting base 22 and the iron lever 24, and the iron lever 24 rotates around the rotation shaft 23 following the operation of the air cylinder 40.

  Next, based on the description of FIG. 5 and FIG. 6, the sealing and ironing operation of the seal and ironing unit 1 shown as the embodiment in FIGS. 1 to 4 will be described. FIG. 5 is a process diagram for explaining the closing (ironing) operation and the opening (ironing release) operation of the ironing unit 10 in the seal / ironing unit 1, and FIG. 6 shows the horizontal heater block 6 in the sealing / ironing unit 1. FIG. 6 is a partial view for explaining the operation of the shutter 19 and the iron bar 25. The description of the operation of the bag making and filling machine is omitted. In addition, for the seal and ironing unit 1, units having substantially the same structure are disposed on both sides of the cylindrical packaging material Ft, and both units operate in synchronization with each other. Hereinafter, for the sake of simplicity, only the operation of the seal / ironing unit 1 on one side will be described. Further, regarding the operation of the seal and ironing unit 1, even if it is not shown in FIG. 5 or FIG. However, it will be explained.

  FIG. 5 shows operations of the rotating shaft 23, the ironing lever 24, the ironing rod 25, the cam follower 30, the cam plate 35, and the air cylinder 40. The basic operation of the ironing unit 10 is as follows. The ironing lever 24, the ironing bar 25, and the cam follower 30 operate as a single body. When the ironing unit base 11 moves forward, force is transmitted to the shutter unit 14 via the coil springs 20 and 20. When the shutter 19 is closed in cooperation with the other side, the horizontal heater unit 2 moves forward while further compressing the coil springs 20, 20 and sandwiches the cylindrical packaging material Ft with the horizontal seal surface 7 of the horizontal heater block 6. When attaching, a horizontal seal is given to the cylindrical packaging material Ft. The shutter unit 14 operates integrally with the ironing bar unit 15 via the slide shafts 17 and 17. The ironing unit base 11 and the ironing bar unit 15 cannot approach more than the distance determined by the stopper 26 and operate integrally when they are in contact with each other via the stopper 26. When the ironing lever 24 rotates around the rotation shaft 23 by the cam action of the cam follower 30 and the cam plate 35, the ironing bar 25 moves substantially up and down. When the ironing lever 24 moves downward while being in contact with the tubular packaging material Ft, the ironing lever 24 performs an ironing operation on the tubular packaging material Ft.

  5 (1), the output rod 42 of the air cylinder 40 is retracted, and the squeezing lever 24 is shown in the most rotated state around the rotating shaft 23 in the counterclockwise direction. A cam follower 30 provided at the rear end portion 29 of the ironing lever 24 rides on the starting end position of the horizontal cam portion 36 of the fixed plate cam 35 and is stretched between the front end portions 28 and 28 of the ironing lever 24. The ironing bar 25 is lifted to the top, that is, the ironing bar 25 occupies the height position of the upper edge of the horizontal seal surface 7 of the horizontal heater block 6.

  The horizontal heater unit 2 advances from the state shown in (1) of FIG. 5, and the seal / ironing unit 1 moves to the position shown in FIG. 5 (2). At this position, the cam follower 30 is on the terminal position of the horizontal cam portion 36 of the fixed plate cam 35. When the horizontal heater unit 2 moves forward together with the ironing unit base 11, the forward movement of the unit base 11 is transmitted to the shutter unit 14 via the coil springs 20 and 20 in a compressed state, thereby moving the shutter unit 14 forward. At this stage, neither the horizontal heater unit 2 nor the shutter 19 is in contact with the cylindrical packaging material Ft yet. The ironing bar 25 occupies the uppermost position that can be taken from the state shown in FIG. 5 (1). In the state shown in FIG. 5 (2), the front side of the lateral seal surface 7 and the shutter 19 Located directly below.

  When the horizontal heater unit 2 further advances and the seal / ironing unit 1 moves from the position shown in FIG. 5 (2) toward the position shown in FIG. 5 (3), the cam follower 30 is an inclined cam of the fixed plate cam 35. Ride on part 37 and rise. Accordingly, the ironing lever 24 rotates clockwise around the rotation shaft 23 while moving forward. The ironing rod 25 provided at the distal end portion 28 of the ironing lever 24 moves downward from the ironing start position shown in FIG. 5 (2) to the ironing end position shown in FIG. 5 (3). Based on the shape of the ironing lever 24, the ironing rod 25 moves from the upper ironing start position to the ironing end position located sufficiently below the horizontal line passing through the rotation shaft 23, thereby forming a cylindrical shape. A squeezing operation is performed within a range including a portion of the packaging material Ft including the side seal scheduled portion. When there is a fine piece of the product, the piece is squeezed out from the side seal planned portion and pushed out into the lower bag. As a result, even when the horizontal seal surface 7 is pressed against the planned portion of the horizontal seal at the time of the horizontal seal, the horizontal seal surface 7 cooperating with the other side does not bite the fragments. As for the ironing rod 25, the ironing start position is the upper limit of the horizontal seal planned area or a position above it, and the position where the ironing of the cylindrical packaging material is started, and the ironing end position is the horizontal seal scheduled The lower limit of the region or a position below the lower limit, where the ironing of the cylindrical packaging material is finished and the separation of the ironing bar from the cylindrical packaging material is started.

In the position shown in FIG. 5 (3), the shutter 19 is closed in contact with the cylindrical packaging material Ft.
The horizontal seal surface 7 of the horizontal heater unit 2 is not closed, and a gap is left between the horizontal seal surface 7 and the cylindrical packaging material Ft so that the ironing rod 25 can pass through. The shutter 19 cooperates with the other side to sandwich the cylindrical packaging material Ft from the outside, so that even if the product is subsequently introduced from above through the filling cylinder, the product is in the cylindrical packaging above the closed shutter 19. It is received in the material Ft and does not descend to the inner surface of the horizontal seal region of the tubular packaging material Ft. Only the cylindrical packaging material Ft having the narrowest vertical range G remains as much as possible between the shutter 19 and the iron bar 25 (FIG. 6A). Therefore, it is difficult for fine fragments of the product to be confined within the range G, and even if the fragments are confined within the range G, the amount can be reduced as much as possible. Since the output rod 42 of the air cylinder 40 is connected to the ironing lever 24, the output rod 42 moves out of the cylinder block 41 as the ironing lever 24 rotates, but air supply / discharge is free. By doing so, the air cylinder 40 does not become a resistance against the turning operation of the ironing lever 24.

  In the state shown in FIG. 5 (3) (the cam follower 30 climbs up the inclined cam portion 37 of the cam plate 35 and the ironing rod 25 is at the lowest ironing end position and the shutter 19 is closed), the horizontal heater unit 2 is further driven forward. Although the shutter unit 14 and the iron bar unit 15 connected via the slide shafts 17 and 17 cannot move forward, the horizontal heater unit 2 and the iron unit base 11 together with the coil springs 20 and 20 are further compressed to the compression amount. It is possible to move forward while being guided by the slide shafts 17 and 17 by a corresponding distance. Accordingly, until the shutter 19 is closed and the ironing bar 25 is in the ironing end position where the ironing bar 25 is lowered downward, the horizontal heater unit 2 moves forward to the horizontal sealing surface 7 until FIG. Is pressed against the area where the squeezing operation of the cylindrical packaging material Ft is performed, and a horizontal seal is applied to the planned horizontal sealing portion of the cylindrical packaging material Ft (FIG. 6 (2)).

  The ironing unit 10 maintains the state in which the output rod 42 has advanced by the operation of the air cylinder 40, the state where the ironing rod 25 is lowered to the lowest ironing end position, and the cam follower 30 is separated from the fixed cam plate 35. The retreat is started from the state shown in FIG. Even if the ironing unit base 11 starts to move backward together with the horizontal heater unit 2, the shutter 19 is urged forward by the action of the restoring force of the coil springs 20 and 20, so that it initially contacts the cylindrical packaging material Ft. Maintain the state. In addition, the ironing bar unit 15 does not immediately start retreating, and the ironing bar 25 is kept in the state of being lowered to the ironing end position.

  The horizontal heater unit 2 having the horizontal seal applied to the cylindrical packaging material Ft moves backward and leaves the cylindrical packaging material Ft. At this time, the ironing rod 25 has not yet started retreating, and occupies the ironing end position close to the portion directly below the laterally sealed portion of the tubular packaging material Ft. Since the horizontal heater block 6 is hot and heated to perform sealing, there is a possibility that the portion of the bag B formed from the cylindrical packaging material Ft is melted and attached. In this case, the ironing rod 25 that has not yet been retracted is attached to the lateral heater block 6 and abuts against the bag B that is about to retract together, and when the lateral heater unit 2 is further retracted, the bag B is moved to the lateral heater unit 2. It works to peel off. Thus, the squeezing bar 25 also functions to peel the bag B from the horizontal heater unit 2 and prevent the bag B from moving by being connected to the horizontal heater block 6 (FIG. 6 (3)).

  As the horizontal heater unit 2 moves backward, the ironing unit base 11 approaches the ironing bar base 21 of the ironing bar unit 15 until it abuts via the stopper 26, and the ironing unit base 11, the slide shafts 17 and 17, and the shutter. The unit 14 starts to move backward together with the horizontal heater unit 2. The middle of the retreat is shown in FIG. The ironing unit 10 at the time of retreating retreats with the state shown in FIG. 5 (4). The ironing bar 25 does not immediately return to the upper ironing start position, but retreats horizontally while being lowered to the ironing end position, as in the lower shutter of the conventional structure (FIG. 6 (4)).

  The ironing unit 10 moves back to the end position of the opening operation shown in FIG. 5 (6) through FIG. 5 (5) while maintaining the state shown in FIG. 5 (4). The return operation start timing when the ironing lever 24 and the ironing rod 25 return from the end of the opening operation shown in FIG. 5 (6) to the initial position shown in FIG. 5 (1), that is, the start position of the next closing operation is This is done after the ironing unit 10 reaches the last position of the opening operation, which is the last position of the ironing cycle. The returning operation of the ironing lever 24 and the ironing bar 25 is started after the horizontal heater unit 2 is opened and the ironing bar 25 is first retracted and the ironing unit 10 is retracted as in the conventional operation of the lower shutter. .

  More specifically, when the ironing unit 10 reaches the end position of the opening operation, the air cylinder 40 is operated and the output rod 42 is retracted, and the iron follower 24 is fixed to the cam follower 30 provided at the rear end thereof. The iron plate is rotated around the rotary shaft 23 (counterclockwise in the figure) until it rides on the starting end position of the horizontal cam portion 36 of the plate cam 35 of the plate cam 35 and is strung between the front ends of the ironing lever 24. The rod 25 is moved up just before the retracted lateral seal surface 7 and lifted to the top, and returns to the position shown in FIG. Therefore, it is possible to reliably avoid interference between the ironing rod 25 that returns and the cylindrical packaging material Ft that is lowered below the filling cylinder and between the sealing and ironing units 1 and 1 for the bag to be manufactured next. (FIG. 6 (5)).

As mentioned above, although the Example of this invention was described based on description of a figure, a various change is possible in the range which does not deviate from the meaning of this invention.
As for the means for operating the squeezing bar, the forward is a cam and the return is a cylinder. However, the means is not limited to this combination, and is optional. For example, the return operation start timing of the ironing lever 24 and the ironing rod 25 may be earlier as long as it is later than the time when the ironing unit 10 starts to retreat as long as there is no interference with others. . The return operation start timing can be easily set by the operation of the air cylinder 40, and the schedule design of the operation timing is made flexible. Further, the sliding between the ironing unit base 11 and the ironing bar base can be performed by a sliding structure other than the slide shaft 17, and the urging means for the shutter unit 14 can also be a spring structure other than the coil spring 20. .

DESCRIPTION OF SYMBOLS 1 Seal and ironing unit 2 Horizontal heater unit 3 Horizontal heater block base 4 Front surface 5 Upper surface 6 Horizontal heater block 7 Horizontal seal surface 10 Ironing unit 11 Ironing unit base 11a, 11a Bearing hole 11b, 11b Loading hole 11c, 11c Mounting hole 12 Upper surface 13 Front (rear)
14 Shutter unit 15 Iron bar unit 16, 16 Slide bearing 17, 17 Slide shaft 17a Front end 17b Rear end 18 Shutter base plate 19 Shutter 20, 20 Coil spring 21 Iron bar base 22 Air cylinder mounting base 23 Rotating shafts 24, 24 Ironing lever 25 Ironing rod 26 Stopper 27 Long plate-shaped portion 28 Front end portion 29 Rear end portion 30, 30 Cam follower 31 Arm 32 Mounter 35 Fixed cam plate 36 Horizontal cam portion 37 Inclined cam portion 40 Air cylinder 41 Cylinder block 42 Output rod 50 Vertical bag making filling and packaging machine 51 Former 52 Product filling cylinder 53 Vertical sealing device 54 Horizontal sealing unit 54a, 54b Horizontal sealing portion 55 Feed belt device 56 Cutter 57 Cutter groove 58, 58 Ironing arm 59 Saw bar Fw Web-like packaging material Ft Cylindrical packaging material S Product B Bag Bp Bag packaging W Horizontal seal length H Horizontal seal width G Range

Claims (8)

In a vertical bag packaging machine provided with a horizontal heater unit for forming a bag for packaging products by applying a horizontal seal to a cylindrical packaging material, the horizontal heater unit is provided with the cylindrical packaging for applying the horizontal seal. A squeezing device that operates in conjunction with an operation of approaching / separating from a material, and performs a squeezing operation in a range including a horizontal seal scheduled region of the cylindrical packaging material in which the product is filled through the interior,
It has an ironing unit having an ironing bar that follows the ironing path in response to the cam follower following the cam surface of the fixed cam plate during the ironing operation, and follows the return path when the ironing operation returns. ,
In the ironing unit, the ironing bar is located at the ironing start position when following the first half of the ironing path before the horizontal heater unit abuts on the cylindrical packaging material to provide the horizontal seal. The ironing operation is performed on the planned horizontal seal area while moving downward while in contact with the planned horizontal seal area of the cylindrical packaging material when contacting the packaging material and following the latter half of the ironing path. The bar starts to follow the return path after the lateral heater unit with the lateral seal is separated from the tubular packaging material, and the cam follower is attached to the cam plate at the start of tracing the return path. The ironing in a vertical bag packaging machine, wherein the ironing machine moves backward from the ironing end position in a direction away from the cylindrical packaging material in a state of being separated from the cam surface. apparatus. The ironing unit includes an iron bar base that operates in conjunction with an operation in which the horizontal heater unit approaches and separates from the cylindrical packaging material, and a rotary shaft that is parallel to the iron bar with respect to the iron bar base. It has an ironing lever that can rotate around
The ironing lever has the ironing rod at the front end portion and the cam follower at the rear end portion,
When the ironing unit moves forward toward the tubular packaging material, the cam follower follows the cam surface of the cam plate, whereby the ironing bar follows the ironing path, and the ironing lever is The ironing device in the vertical bag packaging machine according to claim 1, wherein the ironing rod follows the second half of the ironing path as the ironing rod rotates around the rotation axis. The ironing unit includes an air cylinder that connects the ironing lever to the ironing rod base, and the air cylinder operates at an arbitrary timing when the ironing rod follows the return path, and The longitudinal lever according to claim 2, wherein the ironing lever is rotated so that the ironing bar is lifted and the cam follower is in contact with the cam surface of the cam plate to return to the initial position of the ironing path. Ironing equipment for mold bag packaging machines. The air cylinder is actuated when the ironing bar has been retracted in a direction away from the cylindrical packaging material in response to an operation of separating the horizontal heater unit from the cylindrical packaging material. The ironing apparatus in the vertical bag packaging machine according to claim 3. Between the horizontal heater unit and the ironing unit, a spring and a stopper that regulates the interval when approaching each other are provided,
The horizontal heater unit causes the ironing unit to perform the ironing operation via the spring when performing an operation of approaching the cylindrical packaging material, and after applying the horizontal seal, The ironing unit keeps the ironing end position by the action of the restoring force of the spring until the lateral heater unit comes into contact with the ironing unit through the stopper when moving away from the ironing unit. The ironing device in the vertical bag packaging machine according to any one of claims 2 to 4. The vertical bag packaging machine operates together with the ironing unit in conjunction with an operation in which the horizontal heater unit approaches or separates from the cylindrical packaging material, and the cylindrical packaging material is removed from the horizontal seal planned area. Is also provided with a shutter to sandwich the product in the cylindrical packaging material sandwiched in the upper position,
The longitudinal distance according to any one of claims 1 to 5, wherein an interval between the ironing bar and the shutter sandwiching the cylindrical packaging material is set as narrow as possible. Ironing equipment for mold bag packaging machines. The vertical bag packaging machine operates together with the ironing unit in conjunction with an operation in which the horizontal heater unit approaches or separates from the cylindrical packaging material, and the cylindrical packaging material is removed from the horizontal seal planned area. Is also provided with a shutter to sandwich the product in the cylindrical packaging material sandwiched in the upper position,
In the ironing bar, the interval between the shutter and the cylindrical packaging material is set as narrow as possible.
The said spring is provided in the compression state between the said horizontal heater unit and the said shutter, The said restoring force of the said spring acts on the said ironing unit via the said shutter. Ironing device for vertical bag packaging machine. The vertical packaging machine is arranged inside the cylindrical packaging material and filled with the product to be packaged, and the cylindrical packaging material in the vertical direction along the outer peripheral surface of the filling cylinder. It is a vertical type bag making filling packaging machine provided with the feed mechanism which feeds along a vertical direction along the side. The ironing device in the vertical type bag packaging machine as described in any one of Claims 1-7 characterized by the above-mentioned.

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