JP6887651B2 - Bag making and packaging machine - Google Patents

Description

The present invention uses a bag-making and packaging machine, in particular, a horn and anvil that hit the film so as to sandwich the film against the both edges of the film that are conveyed in a state where the edges of the film are aligned and formed into a tubular shape. The present invention relates to a bag-making and packaging machine that ultrasonically seals both edges.

Conventionally, both side edges of a film are ultrasonically sealed with a horn and an anvil that hit the film so as to sandwich the film with respect to the side edges of the film that is conveyed in a state where both side edges are combined and formed into a tubular shape. A bag packaging machine is known (for example, Patent Document 1 (Japanese Unexamined Patent Publication No. 2016-222261)).

In such a bag-making and wrapping machine, when the film is set in the wrapping machine at the time of film replacement, the film is conveyed without bag-making instead of the normal bag-making operation (here, such an operation). Is called a film feed operation).

Since there is no need to make a bag during the film feeding operation, only the film needs to be transported without ultrasonic sealing (that is, without vibrating the horn). However, if the film is sandwiched between the horn and the anvil, the film cannot be transferred well due to the resistance of the sandwiched portion to the film transfer, and there is a possibility that a film transfer problem such as skewing of the film may occur. On the other hand, if the film is conveyed while performing ultrasonic sealing as in the normal bag making operation, the resistance force of the holding portion to the film transfer is reduced due to the vibration of the horn, and the film transfer defect can be suppressed. However, in this case, especially when the transport distance of the film is long, the horn and the anvil may overheat and the film may be melted.

If the bag-making and packaging machine is configured so that the horn and the anvil are separated from the film during the film feeding operation, it is possible to suppress the occurrence of film transport failure and film fusing. However, in order to automatically separate the horn or anvil from the film during the film feeding operation, an actuator or mechanism for moving the horn or anvil is required. When such an actuator or mechanism is provided, there is a problem that the cost of the device is increased and the size of the device is increased because a space for arranging the actuator or mechanism is required. It is also conceivable to provide a mechanism for manually moving the horn or anvil, in which case the actuator for moving the horn or anvil can be omitted. However, each time a film feed operation is required, the horn or anvil is moved to a position away from the film and then the film feed operation is performed, and then the horn or anvil is moved to a position where the film is sandwiched between the horn and the anvil. Since it is necessary to move the film to perform the bag making operation, there is a problem that the work becomes complicated.

An object of the present invention is a bag-making and packaging machine that ultrasonically seals both side edges of a film conveyed in a state where both side edges are combined and formed into a tubular shape, and the film can be produced without bag-making. It is an object of the present invention to provide a bag-making and packaging machine that can suppress the occurrence of film transport defects and fusing during transport, and is low-cost, compact and has good workability.

The bag-making and packaging machine according to the first aspect of the present invention includes a transport unit, a seal unit, and a control unit. The transport portion was unwound from the film roll and formed into a tubular shape by aligning the inner surface of one side edge portion with the outer surface of the other side edge portion, or by aligning the inner surfaces of both side edge portions with each other. Transport the film. The sealing portion has a horn and an anvil that hit the film conveyed by the conveying portion so as to sandwich the film against the combined both side edges, and ultrasonically seals both side edges of the film. The control unit controls the operation of the transport unit and the seal unit. The control unit has a normal first mode in which the seal portion is ultrasonically sealed while the film is being conveyed, and a second mode in which the horn is vibrated with an amplitude smaller than the amplitude of the horn in the normal first mode while the film is being conveyed. As a control mode.

The bag-making / packaging machine according to the first aspect of the present invention has, as a control mode of the bag-making / packaging machine, a normal first mode (a normal control mode performed at the time of bag making) and a normal first mode while transporting a film. It has a second mode in which the horn is vibrated with an amplitude smaller than the hour. In the second mode, although the horn vibrates, the amplitude of the vibration is usually smaller than that in the first mode, so that overheating of the horn and the anvil is likely to be suppressed. Therefore, by executing the second mode during the film feeding operation, it is possible to vibrate the horn to suppress film transport defects and prevent the occurrence of film fusing. Further, by executing the second mode, it is not necessary to move the positions of the horn and the anvil in order to suppress the occurrence of film transport failure and fusing, and the working time required for the film feeding operation can be suppressed.

The bag-making / packaging machine according to the second aspect of the present invention is the bag-making / packaging machine according to the first aspect, and the control unit is slower in the second mode than the film conveying speed in the first mode. The film is transported to the transport section.

In the bag-making and packaging machine according to the second aspect of the present invention, since the film transfer speed in the second mode is relatively low, a film transfer problem occurs particularly during the second mode (during the film feed operation). Hateful. However, when the film transport speed is reduced, the time required to transport the film by a predetermined distance becomes longer, and the continuous operating time of the horn tends to become longer, so that there is a problem that the horn and the anvil tend to overheat. .. However, here, since the amplitude of the horn in the second mode is relatively small, overheating of the horn and the anvil can be suppressed even if the continuous operation time of the horn is relatively long.

The bag-making / packaging machine according to the third aspect of the present invention is the bag-making / packaging machine according to the first aspect or the second aspect, and the second mode is executed when the film roll is replaced.

In the bag-making and packaging machine according to the third aspect of the present invention, when the film feed operation is executed for adjusting the film transport state at the time of replacing the film roll, the occurrence of film transport failure and fusing is suppressed. Moreover, the transport state of the film can be adjusted in a short working time.

The bag-making / packaging machine according to the fourth aspect of the present invention is the bag-making / packaging machine according to any one of the first to third aspects, and the control unit is usually the same in the first mode and the second mode. Vibrate the horn at a frequency.

In the bag-making and packaging machine according to the fourth aspect of the present invention, even when it is difficult to change the frequency of the horn due to the specifications, while suppressing the occurrence of film transport failure and fusing during the film feeding operation, The working time required for the film feeding operation can be suppressed.

The bag-making / packaging machine according to the fifth aspect of the present invention is the bag-making / packaging machine according to any one of the first to fourth aspects, and the control unit is, in the second mode, usually a horn in the first mode. Vibrate the horn with an amplitude of less than half the amplitude.

In the bag-making and packaging machine according to the fifth aspect of the present invention, the amplitude of the horn in the second mode is adjusted to less than half the amplitude of the horn in the normal first mode performed during bag-making, and therefore, in particular, the second mode. It is easy to prevent the film from fusing during execution.

The bag-making / packaging machine according to the sixth aspect of the present invention is the bag-making / packaging machine according to any one of the first to fifth aspects, and the anvil is a driven roller that rotates in accordance with the transportation of the film.

In the bag-making and packaging machine according to the sixth aspect of the present invention, the anvil is configured to rotate in accordance with the transportation of the film. With this configuration, the resistance of the film sandwiched between the horn and the anvil to the film transport can be reduced, the film is skewed, the film is dragged and punctured, and the film comes off between the horn and the anvil ( It is possible to suppress the occurrence of a problem that the horn and the anvil come into direct contact with each other. Therefore, even in the second mode in which the amplitude of the horn is relatively small, the resistance force of film transport in the film sandwiching portion can be reduced, and the occurrence of film transport failure is particularly likely to be prevented.

The bag-making / packaging machine according to the seventh aspect of the present invention is the bag-making / packaging machine according to any one of the first to sixth aspects, and the seal portion is such that at least one of the horn and the anvil is separated from the film. It also has a manual separation mechanism to move it to.

In the bag making and packaging machine according to the present invention, it is not necessary to separate the horn or the anvil from the film when the second mode is executed (during the film feeding operation). Therefore, the mechanism for automatically operating the horn or the anvil in the second mode can be omitted from the bag-making / packaging machine, and the cost of the bag-making / packaging machine can be reduced.

On the other hand, since the bag-making and packaging machine according to the seventh aspect of the present invention has a manual horn or anvil separation mechanism, the horn or anvil can be easily removed as needed during maintenance work or the like. It can be separated from the film.

In the bag-making and packaging machine of the present invention, as the control mode of the bag-making and packaging machine, in addition to the normal first mode (normal control mode performed at the time of bag making), the amplitude is smaller than that of the normal first mode while transporting the film. Has a second mode of vibrating the horn. In the second mode, although the horn vibrates, the amplitude of the vibration is usually smaller than that in the first mode, so that overheating of the horn and the anvil is likely to be suppressed. Therefore, by executing the second mode during the film feeding operation, it is possible to vibrate the horn to suppress film transport defects and prevent the occurrence of film fusing. Further, by executing the second mode, it is not necessary to move the positions of the horn and the anvil in order to suppress the occurrence of film transport failure and fusing, and the working time required for the film feeding operation can be suppressed.

It is a schematic perspective view of the bag making packaging machine which concerns on one Embodiment of this invention. It is a block diagram of the bag making packaging machine which concerns on FIG. FIG. 5 is a schematic drawing of a bag-making and packaging unit of the bag-making and packaging machine according to FIG. 1. FIG. 5 is a schematic drawing of a film sealed by a horn and an anvil of the vertical sealing mechanism of the bag-making and packaging machine according to FIG. 1. It is a schematic perspective view of the horn and anvil of the vertical sealing mechanism of the bag making and packaging machine which concerns on FIG. Outline of the periphery of the vertical sealing mechanism, which depicts a state in which the horn is moved away from the anvil (separated from the film to be sealed) by the horn position moving mechanism of the vertical sealing mechanism of the bag making and packaging machine according to FIG. It is a perspective view. It is a figure which typically drew the film which is sealed by the horn of the vertical sealing mechanism of the bag making packaging machine which concerns on modification A, and anvil.

The bag-making and packaging machine 100 according to the embodiment of the present invention will be described below with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention, and can be appropriately changed without departing from the spirit of the present invention.

In the following explanation, expressions such as "front (front)", "rear (rear)", "top", "bottom", "left", and "right" may be used to indicate the direction. is there. Unless otherwise specified, these expressions follow the directions shown in the figure. Further, in the following description, the expressions "upstream" and "downstream" may be used, but "upstream" and "downstream" are based on the transport direction of the film F.

(1) Overall Configuration FIG. 1 is a schematic perspective view of a bag-making / packaging machine 100 according to an embodiment of the present invention. FIG. 2 is a block diagram of the bag making / packaging machine 100. FIG. 3 is a diagram schematically showing the bag-making and packaging unit 20 of the bag-making and packaging machine 100.

The bag-making and wrapping machine 100 wraps the object to be packaged while making bags as follows.

The bag-making and packaging machine 100 shapes the sheet-shaped film F into a tubular shape by aligning both side edges thereof. Then, the bag-making and packaging machine 100 vertically seals both side edges of the tubular film F to form a tubular film Fc. Further, the bag making / packaging machine 100 horizontally seals the vertically sealed film F (cylindrical film Fc). The packaged object was put into the inside of the tubular film Fc whose lower end was horizontally sealed, and the packaged object was filled inside by further horizontally sealing the upper side of the area where the packaged object was put. Bag B is manufactured. The packaged object is supplied by, for example, a packaged object supply device (for example, a conveyor) (for example, a conveyor) in the front stage of the bag-making / packaging machine 100, and is charged into the tubular film Fc.

The packaged object is, for example, a small industrial part or a small bag containing a seasoning or the like. The bag-making and wrapping machine 100 manufactures a bag B containing a predetermined amount of these objects to be packaged. The type of the object to be packaged is merely an example, and the bag-making packaging machine 100 can manufacture a bag B containing various objects to be packaged.

The bag-making and wrapping machine 100 mainly includes a film supply unit 10, a bag-making and wrapping unit 20, an operation unit 70, and a control unit 80 (see FIGS. 1 to 3). The bag-making and packaging unit 20 mainly includes a housing 200, a molding mechanism 30, a transport mechanism 40, a vertical seal mechanism 50, and a horizontal seal mechanism 60.

(2) Detailed configuration (2-1) Film supply unit The film supply unit 10 is a unit that supplies a sheet-shaped film F to the bag-making and packaging unit 20. The film F is, for example, a film having a layer of polypropylene which is a thermoplastic resin on the surface. The film F used in the bag-making and packaging machine 100 is not limited to a film made of such a material, and may be appropriately selected from films capable of ultrasonic sealing.

A film roll 12 around which the film F is wound is set in the film supply unit 10. As will be described later, when the film F is transported by the transport mechanism 40 of the bag making / packaging unit 20, the film F is unwound from the film roll 12. The film F is guided by a roller (not shown) arranged along the transport path of the film F, and is transported to the molding mechanism 30 of the bag-making / packaging unit 20.

(2-2) Bag-making and packaging unit The bag-making and packaging unit 20 receives the supply of the object to be packaged, and uses the film F supplied from the film supply unit 10 to create a bag B containing the object to be packaged.

The bag-making and packaging unit 20 mainly includes a housing 200, a molding mechanism 30, a transport mechanism 40, a vertical seal mechanism 50, and a horizontal seal mechanism 60 (see FIGS. 1 and 3).

The molding mechanism 30 forms the sheet-shaped film F, which is unwound from the film roll 12 of the film supply unit 10 and conveyed, by aligning both side edges of the film F into a tubular shape. Here, the side edge portion of the film F means an edge portion in the width direction of the film F. The width direction of the film F means a direction orthogonal to the transport direction of the film F. In FIG. 3, the width direction of the film F is the left-right direction. The transport mechanism 40 transports the film F formed into a tubular shape to the vertical sealing mechanism 50. Here, the transport mechanism 40 transports the film F formed into a tubular shape downward. The vertical seal mechanism 50 has a tubular shape having a vertical seal portion S that is ultrasonically sealed by ultrasonically sealing both side edges of the film F, which is formed into a tubular shape and is conveyed by the transfer mechanism 40, in the vertical direction. A film Fc is formed (see FIG. 3). The lateral sealing mechanism 60 laterally seals the conveyed tubular film Fc along a direction intersecting the conveying direction. In particular, here, the lateral sealing mechanism 60 laterally seals the tubular film Fc conveyed downward along a direction orthogonal to the conveying direction (here, the left-right direction). Further, the horizontal sealing mechanism 60 separates the lower portion of the tubular film Fc in which the object to be packaged is housed and the upper and lower ends are sealed from the tubular film Fc arranged above the tubular film Fc. The bag B containing the package is made.

(2-2-1) Casing The casing 200 is a casing that mainly houses the bag-making and packaging unit 20 (see FIG. 1). Inside the housing 200, a molding mechanism 30 (excluding the upper part of the tube 34 described later), a transport mechanism 40, a vertical seal mechanism 50, and a horizontal seal mechanism 60 are housed inside. The control unit 80 is also housed inside the housing 200. Further, an operation unit 70 is arranged on the upper part of the front side of the housing 200.

The housing 200 includes a door 210 arranged on the front side (see FIG. 1). By opening the door 210, the worker can perform maintenance on the transport mechanism 40, the vertical seal mechanism 50, the horizontal seal mechanism 60, etc. housed inside the housing 200, or perform a molding mechanism when the film roll 12 is replaced. The film F can be set on the 30 (see FIG. 1).

It is preferable that the bag making / packaging machine 100 is configured so as not to operate when the door 210 is opened. With such a configuration, it is possible to prevent an accident such as a finger being caught in the operating portion of the bag making / packaging machine 100 by an operator.

(2-2-2) Molding mechanism The molding mechanism 30 mainly includes a tube 34 and a former 32 (see FIG. 3).

The tube 34 is a tubular member, and the upper and lower ends are open. The object to be packaged contained in the bag B is loaded through the opening at the upper end of the tube 34.

The former 32 is arranged so as to surround the tube 34. The sheet-shaped film F that has been unwound from the film roll 12 and conveyed to the former 32 is formed into a tubular shape when passing between the former 32 and the tube 34. In the present embodiment, as shown in FIG. 4, the conveyed sheet-shaped film F has an inner surface of one side edge portion of the film F (Fai of the first side edge portion Fa) and the other side of the film F. The outer surface of the edge portion (outer surface Fbo of the second side edge portion Fb) is combined to form a tubular shape.

(2-2-3) Transport mechanism The transport mechanism 40 is an example of a transport unit. The transport mechanism 40 transports the film F formed into a tubular shape by the molding mechanism 30 to the vertical sealing mechanism 50.

The transport mechanism 40 is arranged below the vertical seal mechanism 50 (see FIG. 3). As shown in FIGS. 2 and 3, the transport mechanism 40 includes a pair of rollers 42 arranged so as to sandwich the tube 34 in front of and behind the tube 34, and a motor 44 for driving the rollers 42. The roller 42 is rotationally driven by the motor 44. The roller 42 on the front side of the tube 34 is rotated clockwise in the right side view (see FIG. 3). The roller 42 on the rear side of the tube 34 is rotated counterclockwise in the right side view (see FIG. 3). When the roller 42 is rotated in this way, the film F (cylindrical film Fc after vertical sealing by the vertical sealing mechanism 50) sandwiched between the roller 42 and the tube 34 is conveyed downward. In order to prevent the roller 42 and the tubular film Fc from slipping during transportation of the tubular film Fc, it is preferable that the friction coefficient on the surface of the roller 42 is relatively large.

The motor 44 is a motor having a variable rotation speed. The control unit 80, which will be described later, controls the transfer speed of the film F by the transfer mechanism 40 by controlling the rotation speed of the motor 44.

The configuration of the transport mechanism is not limited to the configuration described above, and may be any configuration as long as the film F formed into a tubular shape can be transported to the vertical seal mechanism 50 in a state where it can be vertically sealed. .. For example, the transport mechanism may have a pair of belts having a suction function arranged on the left and right sides of the tube 34 so as to sandwich the tube 34, and may transport the film F downward by rotating the belts. Further, the transport mechanism may be arranged at substantially the same height as the vertical seal mechanism 50 or above the vertical seal mechanism 50.

(2-2-4) Vertical Seal Mechanism The vertical seal mechanism 50 is an example of a seal portion. The vertical sealing mechanism 50 ultrasonically seals both side edges (first side edge Fa and second side edge Fb) of the tubular film F conveyed by the conveying mechanism 40.

The vertical seal mechanism 50 mainly includes a horn 52, an anvil 54, a horn position moving mechanism 58, an ultrasonic vibrator 94, and an ultrasonic oscillator 92 (FIGS. 1, FIG. 2, FIGS. 4 to 6). reference).

For the horn 52 and the anvil 54, for example, an aluminum alloy or a titanium alloy is used without limitation.

The horn 52 and the anvil 54 refer to the film F with respect to the combined side edge portions of the film F (the portion where the inner surface Fai of the first side edge portion Fa and the outer surface Fbo of the second side edge portion Fb are combined). (See Fig. 4). The horn 52 is arranged in front of the combined side edges of the film F (see FIG. 4). The anvil 54 is located behind the combined flanks of the film F (see FIG. 4). The horn 52 is attached with an urging member (not shown) that generates a force for pressing the horn 52 against the anvil 54. The urging member is, for example, a spring. Due to the presence of the urging member, the vertical sealing target portion of the film F is sandwiched between the horn 52 and the anvil 54 with a predetermined pressure.

The horn 52 comes into contact with the film F to be vertically sealed at the tip portion 52a arranged on the back surface side (see FIG. 4). The tip portion 52a is formed in a substantially rectangular parallelepiped shape (see FIG. 6). The tip portion 52a sandwiches the vertical seal portion of the film F between the rectangular contact surface arranged on the back surface side thereof in the vertical direction and the longitudinal direction and the anvil 54. The end of the horn 52 opposite to the tip 52a (here, the front side) is connected to the ultrasonic transducer 94. The horn 52 transmits the ultrasonic vibration generated by the ultrasonic vibrator 94 to the film F to be welded.

The ultrasonic vibrator 94 is a piezoelectric element. The ultrasonic oscillator 94 is electrically connected to the ultrasonic oscillator 92. The ultrasonic oscillator 92 supplies a drive voltage to the ultrasonic oscillator 94. The control unit 80, which will be described later, controls the ultrasonic oscillator 92 to control the amplitude of the horn 52 that is ultrasonically vibrated by the ultrasonic vibrator 94.

The anvil 54 is a driven roller that rotates in accordance with the transportation of the film F. This will be described more specifically.

The anvil 54 is formed in a thick cylindrical shape. Grooves are formed in a grid pattern on the outer surface of the cylinder of the anvil 54 (the surface that sandwiches the film F together with the horn 52) (see FIGS. 4 and 5). The shaft 55 is inserted through the hollow portion of the anvil 54 (see FIG. 5). The shaft 55 is attached to a support portion 56 provided on the front surface of the tube 34 in such a posture that its axial direction extends in the left-right direction (see FIG. 4). The support portion 56 rotatably supports the shaft 55. With this configuration, the anvil 54 sandwiching the film F with the horn 52 rotates following the film F when it is conveyed. With this configuration, the resistance force applied to the film transport by the sandwiching portion of the film F between the horn 52 and the anvil 54 can be reduced.

The horn position moving mechanism 58 is an example of a separation mechanism. The horn position moving mechanism 58 is a mechanism for manually moving the horn 52 away from the film F. The horn position moving mechanism 58 is used when the film roll 12 is set, which is performed when the bag making / packaging machine 100 is used for the first time, when a film different from the film used so far is used for packaging, or when a vertical seal is used. It is used for maintenance of the mechanism 50 and the like.

The horn position moving mechanism 58 mainly includes a hinge portion 58b and a fixing portion 58c (see FIG. 6).

The hinge portion 58b pivotally supports the horn support frame 58a that supports the horn 52. By pulling the left side portion of the horn support frame 58a toward the front side and pivoting the horn support frame 58a around the pivot axis of the hinge portion 58b, the state of the horn 52 comes into contact with the film F and is brought into contact with the anvil 54. It is possible to switch from the first state of sandwiching the film F to the second state (see FIG. 6) of moving away from the anvil 54 and separating from the film F. Further, by pushing the left side portion of the horn support frame 58a to the rear side and pivoting the horn support frame 58a around the pivot axis of the hinge portion 58b, the state of the horn 52 is changed from the second state to the above. It is possible to switch to the first state.

The fixing portion 58c is a mechanism for fixing the horn support frame 58a so that the horn 52 is maintained in the first state. The fixing portion 58c is, for example, a screw, and by screwing the screw into a screw hole formed in the frame on the front side, the horn support frame 58a is fixed in a predetermined position in the housing 200 in a predetermined posture. , The horn 52 is in the first state. When the horn support frame 58a is fixed by the fixing portion 58c and the horn 52 is placed in the first state, the horn 52 is pressed toward the anvil 54 by an urging member (not shown), and the film F is formed between the horn 52 and the anvil 54. Be pinched. During the operation of the bag-making and packaging machine 100 (including not only during normal operation (during bag-making operation) but also during film feeding operation, which will be described later), the horn support frame 58a is fixed by the fixing portion 58c, and the state of the horn 52. Is in the first state.

The method for fixing the horn support frame 58a described here is an example, and the present invention is not limited to this, and various fixing methods can be used for fixing the horn support frame 58a.

(2-2-5) Horizontal Sealing Mechanism The horizontal sealing mechanism 60 laterally seals the tubular film Fc to be conveyed downward along a direction intersecting the conveying direction, particularly, here, in a left-right direction orthogonal to the conveying direction. It is a mechanism to do.

The horizontal seal mechanism 60 is arranged below the vertical seal mechanism 50 (see FIG. 3).

The lateral seal mechanism 60 includes a pair of seal jaws 62 including a heater (not shown) and a seal jaw drive unit 64 (see FIGS. 2 and 3). The pair of seal jaws 62 are arranged on the front side and the rear side of the tubular film Fc, respectively. The pair of seal jaws 62 are arranged at the same height. The seal jaw drive unit 64 is, for example, an air cylinder, and moves at least one of the pair of seal jaws 62 in the horizontal direction toward the other.

The lateral seal mechanism 60 moves at least one of the pair of seal jaws 62 toward the other by the seal jaw drive unit 64, sandwiches the tubular film Fc between the seal jaws 62, and upper and lower ends of the bag B. The part to be a part is sealed by heat and pressure.

Further, a cutter (not shown) is built in one of the seal jaws 62. The lateral seal mechanism 60 uses a cutter to separate the bag B from the subsequent tubular film Fc at the center position in the height direction of the lateral seal portion by the seal jaw 62.

In the horizontal seal mechanism 60 of the present embodiment, the seal jaw drive unit 64 moves at least one of the seal jaws 62 in a horizontal linear direction toward the other seal jaw 62 to seal the tubular film Fc. It is sandwiched between Joe 62. However, the operation of the seal jaw 62 is not limited to such an embodiment. For example, the seal jaw drive mechanism of the lateral seal mechanism may be configured to sandwich the tubular film Fc between the seal jaws 62 by rotating the seal jaws 62 with each other.

Further, in the lateral sealing mechanism 60 of the present embodiment, the tubular film Fc is sealed by utilizing the heat generated by the heater arranged inside the sealing jaw 62, but the present invention is not limited to such an embodiment. Absent. For example, the horizontal sealing mechanism may also be configured to ultrasonically seal the tubular film Fc, similarly to the vertical sealing mechanism 50.

(2-3) Operation unit The operation unit 70 is used for instructing the bag-making / packaging machine 100 and setting the operation of the bag-making / packaging machine 100.

The instructions to the bag-making and packaging machine 100 include, but are not limited to, an execution instruction of the bag-making operation described later, an execution instruction of the film feeding operation described later, and an execution instruction of the first operation described later. The execution instruction of the bag making operation is an execution instruction of the normal operation of the bag making packaging machine 100 using the normal first mode described later as a control mode. Further, the execution instruction of the film feeding operation is an execution instruction of the operation of the bag making / packaging machine 100 using the second mode described later as the control mode.

The setting of the operation of the bag making / packaging machine 100 includes, but is not limited to, the bag length of the bag B, the value of the amplitude of the horn 52 in the normal first mode, and the like. When the amplitude of the horn 52 in the normal first mode is fixed at a predetermined value, the amplitude value of the horn 52 in the normal first mode does not have to be configured to be inputtable from the operation unit 70.

(2-4) Control unit The control unit 80 is a control device that controls the operation of the bag making / packaging machine 100.

The control unit 80 is composed of a CPU, a ROM, a RAM, and the like. The control unit 80 is electrically connected to various configurations of the film supply unit 10 and the bag making / packaging unit 20 (motor 44 of the transport mechanism 40, ultrasonic oscillator 92 of the vertical seal mechanism 50, horizontal seal mechanism 60) and the like. (See FIG. 2). The control unit 80 is also electrically connected to the operation unit 70 (see FIG. 2). The control unit 80 operates the film supply unit 10 and the bag making / packaging unit 20 in various configurations according to the operations and settings input from the operation unit 70 by the CPU reading and executing the program stored in the memory. To control.

Further, the control unit 80 is communicably connected to a control unit of a packaged object supply device (for example, a conveyor) that supplies the packaged object to the bag-making / packaging machine 100 outside the bag-making / packaging machine 100. preferable. Then, the control unit 80 is configured to be able to transmit a signal requesting the supply of the packaged object or to be able to receive a signal requesting the execution of the bag making operation according to the supply of the packaged object. The packaged object supply device and the bag making / packaging machine 100 can be interlocked and controlled.

The control unit 80 controls the operation of the transport mechanism 40 so as to appropriately change the rotation speed of the motor 44, for example. By changing the rotation speed of the motor 44, the transfer speed of the film F conveyed by the transfer mechanism 40 is changed.

Further, the control unit 80 controls the operation of the vertical seal mechanism 50 so as to appropriately change the amplitude of the horn 52, for example. Specifically, the control unit 80 controls the ultrasonic vibration generated by the ultrasonic vibrator 94 by controlling the ultrasonic oscillator 92 that supplies the drive voltage to the ultrasonic vibrator 94, and the ultrasonic vibrator 94. The amplitude of the horn 52 ultrasonically vibrated by 94 is changed.

By the way, the control unit 80 mainly has a first mode and a second mode as control modes of the bag making and packaging machine 100.

Normally, the first mode is a control mode in which the vertical sealing mechanism 50 performs ultrasonic sealing while the film F is conveyed by the conveying mechanism 40. Further, normally, the first mode is a control mode in which the horizontal sealing mechanism 60 causes the tubular film Fc vertically sealed by the vertical sealing mechanism 50 to perform horizontal sealing. Normally, the first mode is a control mode executed by the control unit 80 during normal operation, that is, when the bag B containing the packaged object is manufactured.

On the other hand, the second mode is a control mode in which the bag-making / packaging machine 100 is allowed to perform an operation of transporting the film F (film feeding operation) without performing bag-making. In the second mode, the film sealing operation by the horizontal sealing mechanism 60 is not performed. The second mode is a control mode of the bag-making / packaging machine 100 used when the film F appropriately adjusts the transport state, for example, when the film roll 12 is replaced. Note that the film F is conveyed in an appropriate state when the film F is appropriately formed into a tubular shape by the molding mechanism 30, and the film F is conveyed in the originally conveyed path, and the film F is conveyed. A condition in which an inappropriate force is not applied to the film to cause wrinkles or scratches.

The replacement of the film roll 12 includes the replacement of the film roll 12 performed when the film is renewed and the replacement of the film roll 12 performed when the film is replenished.

The replacement of the film roll 12 performed when the film is renewed is the first time the bag-making / packaging machine 100 is used (when the film roll 12 is set in the bag-making / packaging machine 100 for the first time) or the film that has been used so far. Refers to the replacement (set) of the film roll 12 performed when different films are used for packaging. On the other hand, the replacement of the film roll 12 performed when the film is replenished means the replacement of the film roll 12 performed when the film of the film roll used so far is exhausted and a new film of the film roll is replenished to the film. To say.

When the film roll 12 is replaced when the film is updated, the worker performs the following operations before causing the bag-making / packaging machine 100 to perform the film feeding operation (operation in the second control mode). I do.
-The horn position moving mechanism 58 is manually operated to move the horn 52 away from the anvil 54 (the horn 52 is set to the second state (see FIG. 6) described above).
-Remove the film F used so far from the transport path of the film F (except when the film roll 12 is set in the bag making and packaging machine 100 for the first time).
-Set the film roll 12 at a predetermined position of the film supply unit 10.
The film F unwound from the film roll 12 is hung around a roller of a film supply unit 10 (not shown) arranged along a transport path of the film F in a predetermined manner.
A film F, which is hung on a roller of a film supply unit 10 (not shown), is set in a former 32 of a molding mechanism 30.
The film F unwound from the film roll 12 and passed through the molding mechanism 30 is pulled out to at least the position of the roller 42 of the transport mechanism 40.
After pulling out the film F to the position of the roller 42 of the transport mechanism 40, the horn position moving mechanism 58 is manually operated to bring the horn 52 closer to the anvil 54 to be in the first state described above, and the film F is passed through the molding mechanism 30. The film F guided to the vertical seal mechanism 50 is sandwiched between the horn 52 and the anvil 54.

On the other hand, when the film roll 12 is replaced when the film is replenished, the worker performs the film feeding unit before causing the bag making and packaging machine 100 to execute the film feeding operation (operation in the second control mode). A new film roll 12 is set at a predetermined position of 10. Then, the worker attaches the beginning portion of the film F of the newly set film roll 12 to the end portion of the film F of the film roll 12 that has been used so far with tape or the like. At the time of replenishing the film, the film F of the newly set film roll 12 is pulled by the film F of the film roll 12 that has been used so far and is conveyed along a predetermined conveying path. Therefore, at the time of replenishing the film, the worker does not particularly hang the film F on the roller of the film supply unit 10, set the film F on the former 32, operate the horn position moving mechanism 58, and the like.

(2-4-1) Operation of the bag making and packaging machine in the second mode (film feeding operation)
The operation (film feeding operation) of the bag making / packaging machine 100 when the control unit 80 executes the second mode will be described. As a premise, it is assumed that the worker has completed the above-mentioned work performed before causing the bag-making / packaging machine 100 to perform the film feeding operation.

When a switch (not shown) instructing the execution of the film feeding operation of the operation unit 70 is pressed, the control unit 80 controls the operation of each part of the bag-making / packaging machine 100 as follows to perform bag-making / packaging. The machine 100 is made to execute the film feeding operation. Here, the control unit 80 causes the bag making / packaging machine 100 to execute the film feeding operation only while the switch instructing the operation unit 70 to execute the film feeding operation is pressed. The control unit 80 is not limited to this, and when the switch instructing the execution of the film feeding operation of the operation unit 70 is pressed, the control unit 80 is sent to the bag making / packaging machine 100 for a predetermined time (for example, 10 seconds). It may be configured to perform a film feed operation.

The control unit 80 does not operate the lateral seal mechanism 60 when the second mode is executed. When the second mode is executed, the seal jaws 62 of the lateral seal mechanism 60 are arranged in a state of being separated from each other.

During the execution of the second mode, the control unit 80 operates the motor 44 of the transport mechanism 40 to transport the film F. In the control unit 80, in the second mode (during film feeding operation), the transport mechanism 40 normally transfers the film F at a speed lower than the transport speed (first speed) of the film F in the first mode (during bag making operation). It is preferable to control the rotation speed of the motor 44 so as to carry the film. For example, in the second mode, it is preferable that the film F is transported by the transport mechanism 40 at a speed (second speed) that is less than half of the transport speed (first speed) in the normal first mode. During the execution of the second mode, unlike the execution of the normal first mode, which will be described later, the lateral sealing mechanism 60 does not perform the sealing operation, so that the control unit 80 continuously connects to the transport mechanism 40 (switch). The film F is conveyed (without interruption) while is pressed.

Further, during the execution of the second mode, the control unit 80 vibrates the horn 52 of the vertical sealing mechanism 50 while conveying the film F (while the film F is conveyed by the conveying mechanism 40). During the execution of the second mode, the control unit 80 normally vibrates the horn 52 with an amplitude (second amplitude) smaller than the amplitude (first amplitude) of the horn 52 in the first mode (during bag making operation). Let me. Specifically, the control unit 80 adjusts the amplitude of the horn 52 to a second amplitude smaller than the first amplitude by controlling the ultrasonic oscillator 92 of the vertical sealing mechanism 50. The second amplitude is the amplitude of the horn 52 determined so that the film F is not melted even if the horn 52 is vibrated while conveying the film F at the second speed for a predetermined period (for example, 15 seconds). Since the film F does not need to be vertically sealed during the film feed operation, the second amplitude is determined to be as small as possible within a range in which the pinching of the film by the horn and the anvil does not adversely affect the film transport. Is preferable. For example, in the second mode, it is preferable that the control unit 80 vibrates the horn 52 with an amplitude (second amplitude) equal to or less than half the amplitude (first amplitude) of the horn 52 in the first mode. For example, when the first amplitude is about 70% of the maximum amplitude with respect to the maximum amplitude (several tens of micrometers) of the horn 52, the second amplitude is preferably about 30% of the maximum amplitude.

The control unit 80 preferably vibrates the horn 52 at the same frequency in the first mode and the second mode. In this case, the ultrasonic oscillator 92 and the ultrasonic oscillator 94 may be configured so that the ultrasonic oscillator 94 generates vibrations having the same frequency.

After the bag-making and wrapping machine 100 is made to perform the film feeding operation and before the bag-making and wrapping machine 100 is made to perform the bag-making operation, the operator further operates the operation unit 70 and causes the bag-making and wrapping machine 100 to perform the following. The first operation as described above is performed.

At the time of the first operation, the control unit 80 causes the transport mechanism 40 to transport the film F at the same speed as the transport speed (first speed) of the film F in the normal first mode. Further, during the first operation, the control unit 80 vibrates the horn 52 of the vertical sealing mechanism 50 with the same amplitude (first amplitude) as the horn 52 in the normal first mode while the film F is being conveyed, and the film F is vibrated. Is ultrasonically sealed in the vertical direction. The control unit 80 conveys the film F by the conveying mechanism 40 by the first distance while performing the vertical sealing by the vertical sealing mechanism 50. The first distance is a longer distance from the position of the horn 52 of the vertical seal mechanism 50 to the position of the seal jaw 62 of the horizontal seal mechanism 60 in the transport direction of the film F (here, the vertical direction). When the transport mechanism 40 finishes transporting the film F by the first distance, the control unit 80 controls the seal jaw drive unit 64 of the lateral seal mechanism 60 to sandwich the film F between the pair of seal jaws 62. Perform a horizontal seal. Further, the horizontal seal mechanism 60 separates the film F below the horizontal seal position from the film F above the horizontal seal position.

When the film feeding operation is completed, the amplitude of the horn 52 is reduced, so that the film F existing below the vertical sealing mechanism 50 may not be vertically sealed. Even if the amplitude of the horn 52 is reduced, there is a possibility that the film F existing below the vertical sealing mechanism 50 is vertically sealed, but such vertical sealing is usually incomplete. Therefore, it is not preferable to use the film F existing below the vertical sealing mechanism 50 when the film feeding operation is completed for packaging the object to be packaged. On the other hand, when the film feeding operation is completed, the above-mentioned first operation is executed to eject the portion where the vertical seal of the film F is not formed (or the portion where the vertical seal of the film F is insufficient). Can be done.

Here, the operator performs an operation for causing the bag making / packaging machine 100 to execute the first operation, in addition to the operation for the operation unit 70 for executing the film feeding operation. , The control unit 80 causes the bag making and packaging machine 100 to perform the first operation. However, the present invention is not limited to this, and for example, when an operator performs an operation for executing the film feed operation on the operation unit 70, the first operation is automatically executed when the film feed operation is completed. It may be configured in.

(2-4-2) Operation of the bag-making and packaging machine in the normal first mode (bag-making operation)
The operation (bag making operation) of the bag making / packaging machine 100 when the control unit 80 normally executes the first mode will be described. Here, it is assumed that the bag-making and packaging machine 100 is in a state where the bag-making operation can be immediately executed.

In the control unit 80, for example, the packaged object is appropriately housed in the bag B produced by the bag-making packaging machine 100 based on the signal transmitted from the control unit of the packaged object supply device in the previous stage. The operation of the bag making / packaging machine 100 is controlled at the timing.

The control unit 80 controls the transport mechanism 40 to transport the seal-shaped film F from the film supply unit 10 to the molding mechanism 30. The transport speed of the film F by the transport mechanism 40 is the above-mentioned first speed. The transport speed of the film F by the transport mechanism 40 in the first mode may be variable. Even in that case, it is preferable that the transport speed (second speed) of the film F in the second mode is usually lower than the minimum transport speed of the film F that can be set in the first mode. More preferably, the transport speed (second speed) of the film F in the second mode is half or less of the minimum transport speed of the film F that can be normally set in the first mode.

The film F conveyed to the forming mechanism 30 is formed into a tubular shape by the forming mechanism 30. The tubular film F is ultrasonically sealed in the vertical direction by the vertical sealing mechanism 50. Specifically, the control unit 80 controls the ultrasonic oscillator 92 of the vertical sealing mechanism 50 so that the horn 52 of the vertical sealing mechanism 50 vibrates with the first amplitude while the film F is being conveyed. The first amplitude is an amplitude determined so that the film F conveyed at the first speed is appropriately vertically sealed. In the vertical seal mechanism 50, the horn 52 causes ultrasonic vibration based on the ultrasonic vibration oscillated by the ultrasonic vibrator 94. The combined side edge portions Fa and Fb of the tubular film F sandwiched between the horn 52 and the anvil 54 are heated and melted by receiving the energy of the ultrasonic vibration of the horn 52. Further, the combined side edge portions Fa and Fb of the melted film F are sandwiched between the horn 52 and the anvil 54 and pressed. As a result, both side edges Fa and Fb of the film F are ultrasonically sealed.

In the control unit 80, when the tubular film Fc on which the vertical sealing portion S is formed by the vertical sealing mechanism 50 is conveyed to a predetermined position (the portion of the tubular film Fc to be laterally sealed is the horizontal sealing mechanism 60. When the height position of the seal jaw 62 is reached), the transfer of the film F by the transfer mechanism 40 is temporarily stopped. The stop of the transfer of the film F here includes the stop of the transfer of the vertically sealed film F, that is, the tubular film Fc.

Further, when the transport of the film F is stopped, the control unit 80 also stops the vibration of the horn 52 of the vertical sealing mechanism 50. Further, the control unit 80 drives the seal jaw drive unit 64 of the lateral sealing mechanism 60 at the timing when the object to be packaged reaches the lower end portion of the tubular film Fc to laterally seal the tubular film Fc and raises and lowers the tubular film Fc. The bag B whose end is laterally sealed is separated from the tubular film Fc.

(3) Features (3-1)
The bag-making / packaging machine 100 according to the present embodiment includes a transport mechanism 40 as an example of a transport unit, a vertical seal mechanism 50 as an example of a seal unit, and a control unit 80 as an example of a control unit. The transport mechanism 40 is fed out from the film roll 12 and has an inner surface of one side edge portion (inner surface Fai of the first side edge portion Fa) and an outer surface of the other side edge portion (outer surface Fbo of the second side edge portion Fb). Are combined and the film F formed into a tubular shape is conveyed. The vertical sealing mechanism 50 has a horn 52 and an anvil 54 that hit the film F conveyed by the conveying mechanism 40 so as to sandwich the film F with respect to the combined side edge portions Fa and Fb, and both side edges of the film F. Ultrasonically seal Fa and Fb. The control unit 80 controls the operations of the transport mechanism 40 and the vertical seal mechanism 50. The control unit 80 vibrates the horn with an amplitude smaller than the amplitude of the horn in the normal first mode in which the vertical sealing mechanism 50 performs ultrasonic sealing while transporting the film F and the normal first mode in which the film F is conveyed. It has a second mode as a control mode.

In the bag-making and wrapping machine 100, as a control mode for the operation of the bag-making and wrapping machine 100, in addition to the normal first mode (normal control mode performed at the time of bag making), the bag-making and wrapping machine 100 is more than the normal first mode while transporting the film F. It has a second mode in which the horn 52 is vibrated with a small amplitude. In the second mode, although the horn 52 vibrates, the amplitude of the vibration is usually smaller than that in the first mode, so that overheating of the horn 52 and the anvil 54 is likely to be suppressed. Therefore, by executing the second mode during the film feeding operation (the operation of transporting the film without bag making), the horn 52 is vibrated to suppress the transport failure of the film F and prevent the occurrence of film fusing. it can. Further, by executing the second mode, it is not necessary to move the positions of the horn 52 and the anvil 54 in order to suppress the occurrence of transfer failure and fusing of the film F, and the working time required for the film feeding operation can be suppressed. Can be done.

(3-2)
In the bag-making / packaging machine 100 according to the present embodiment, in the second mode, the control unit 80 causes the transport mechanism 40 to transport the film F at a speed lower than the transport speed of the film F in the first mode.

In the bag-making and packaging machine 100, since the transport speed of the film F in the second mode is relatively low, the transport failure of the film F is less likely to occur during the second mode (during the film feed operation). However, when the transport speed of the film F is reduced, the time required to transport the film F by a predetermined distance becomes long, and the continuous operating time of the horn 52 tends to be long, so that the horn 52 and the anvil 54 are likely to overheat. There is a problem of becoming. However, here, since the amplitude of the horn 52 in the second mode is relatively small, overheating of the horn 52 and the anvil 54 can be suppressed even if the continuous operation time of the horn 52 is relatively long.

(3-3)
In the bag-making and packaging machine 100 according to the present embodiment, the second mode is executed when the film roll 12 is replaced.

In the bag-making and packaging machine 100, when the film feeding operation is executed for adjusting the film transporting state when the film roll 12 is replaced, the film F is suppressed from being transported and fusing, and the working time is short. The transport state of the film F can be adjusted with.

(3-4)
In the bag-making and packaging machine 100 according to the present embodiment, the control unit 80 normally vibrates the horn 52 at the same frequency in the first mode and the second mode.

In the bag-making and packaging machine 100, even when it is difficult to change the frequency of the horn 52 due to the specifications, the film feeding operation can be performed while suppressing the occurrence of transfer failure and fusing of the film F during the film feeding operation. The required working time can be suppressed.

(3-5)
In the bag making / packaging machine 100 according to the present embodiment, the control unit 80 vibrates the horn 52 in the second mode with an amplitude of not more than half the amplitude of the horn 52 in the normal first mode.

In the bag-making and packaging machine 100, the amplitude of the horn 52 in the second mode is adjusted to less than half the amplitude of the horn 52 in the normal first mode performed during bag-making. It is easy to prevent the F from fusing.

(3-6)
In the bag-making and packaging machine 100 according to the present embodiment, the anvil 54 is a driven roller that rotates in accordance with the transportation of the film F.

In the bag-making and packaging machine 100, the anvil 54 is configured to rotate in accordance with the transportation of the film F. With this configuration, the resistance force applied to the film transport by the sandwiching portion of the film F between the horn 52 and the anvil 54 can be reduced, the film F is skewed, the film F is dragged to open a hole, and the horn 52 and the anvil 54 It is possible to suppress the occurrence of a problem that the film F comes off from between (the horn 52 and the anvil 54 come into direct contact with each other). Therefore, even in the second mode in which the amplitude of the horn 52 is relatively small, the resistance force of the film transfer in the sandwiching portion of the film F can be reduced, and the occurrence of the film F transfer failure is particularly likely to be prevented.

(3-7)
In the bag making / packaging machine 100 according to the present embodiment, the vertical sealing mechanism 50 has a manual horn position moving mechanism 58 that moves the horn 52 so as to move away from the film F. The horn position moving mechanism 58 is an example of a separation mechanism.

In the bag-making and packaging machine 100, it is not necessary to separate the horn 52 or the anvil 54 from the film F when the second mode is executed (during the film feeding operation). Therefore, the mechanism for automatically operating the horn 52 or the anvil 54 in the second mode can be omitted from the bag-making / wrapping machine 100, and the cost of the bag-making / wrapping machine 100 can be reduced.

On the other hand, since the bag-making and packaging machine 100 has a manual horn position moving mechanism 58, the horn 52 is easily separated from the film F when necessary, such as during maintenance work. be able to.

(4) Modification Example A modification of the above embodiment is shown below. The following modifications may be appropriately combined as long as they do not contradict each other.

(4-1) Modification A
In the above embodiment, the transport mechanism 40 transports the film F formed into a tubular shape by combining the inner surface Fai of the first side edge portion Fa and the outer surface Fbo of the second side edge portion Fb. Then, the vertical sealing mechanism 50 ultrasonically seals both side edge portions Fa and Fb in which the inner surface Fai of the first side edge portion Fa and the outer surface Fbo of the second side edge portion Fb are combined. However, the configuration of the bag-making and packaging machine according to the present invention is not limited to this.

For example, as shown in FIG. 7, the transport mechanism transports the film F formed into a tubular shape by combining the inner surface Fai of the first side edge portion Fa and the inner surface Fbi of the second side edge portion Fb. There may be. That is, the molding mechanism of the bag-making / packaging device molds the film F unwound from the film roll 12 into a tubular shape by combining the inner surface Fai of the first side edge portion Fa and the inner surface Fbi of the second side edge portion Fb. It may be a thing. Then, the vertical sealing mechanism includes a horn 52 and an anvil that hit the inner surface Fai of the first side edge portion Fa and the inner surface Fbi of the second side edge portion Fb so as to sandwich the film F with respect to both side edge portions Fa and Fb. It has 54 (see FIG. 7), and both side edges Fa and Fb of the film F may be ultrasonically sealed.

(4-2) Modification B
In the above embodiment, the control unit 80 causes the bag making and packaging machine 100 to execute the film feeding operation in the second mode when the film roll is replaced, but the present invention is not limited to this. The control unit 80 can be used from the operation unit 70 when a trouble in transporting the film F, a trouble in the vertical seal, or the like occurs, when the bag making / packaging machine 100 which has been stopped is restarted, or when other operation adjustments are made. The bag making and packaging machine 100 may be made to execute the film feeding operation in the second mode based on the input of the above or automatically.

(4-3) Modification C
The shapes and structures of the horn 52 and the anvil 54 described in the above embodiment are examples, and the shapes and structures are not limited.

For example, the horn 52 may have a shape different from the shape illustrated in the above embodiment. The shape of the horn 52 may be appropriately designed so that the film F can be appropriately ultrasonically sealed.

Further, the anvil 54 is preferably a driven roller that rotates in accordance with the transportation of the film F, but may be an immovable member.

(4-4) Modification D
In the above embodiment, in the second mode, the film F is usually conveyed at a speed lower than the transfer speed of the film F in the first mode, but the present invention is not limited to this, and the transfer speed of the film F in the second mode is not limited to this. And usually, the transport speed of the film F in the first mode may be the same.

However, the second mode is a control mode mainly executed for adjusting the transport state of the film. Therefore, the transport speed of the film F in the second mode is usually preferably lower than the transport speed of the film F in the first mode.

(4-5) Modification E
In the above embodiment, the horn 52 is moved away from the film F (away from the anvil 54) by the horn position moving mechanism 58, which is an example of the separation mechanism. However, the separation mechanism is not limited to this, and the separation mechanism may move the anvil 54 away from the film F (away from the horn 52). Further, the separation mechanism may be such that both the horn 52 and the anvil 54 are separated from the film F (so that the horn 52 and the anvil 54 are separated from each other).

(4-6) Modification F
In the above embodiment, the bag-making / packaging machine 100 performs the first operation after the film feeding operation is executed and before the bag-making operation is executed. However, the present invention is not limited to this.

For example, after the control unit 80 completes the execution of the film feeding operation, the bag making operation (operation of the bag making packaging machine 100 in the first mode) is performed in a state where the object to be packaged is not supplied instead of the first operation. ) May be performed a predetermined number of times. Even when the bag-making / packaging machine 100 performs such an operation instead of the first operation, the portion where the vertical seal of the film F is not formed (or the portion where the vertical seal of the film F is insufficient) is discharged. Is possible.

INDUSTRIAL APPLICABILITY The present invention is widely applicable and useful for a bag-making and packaging machine that ultrasonically seals both side edges of a film that is conveyed in a state where both side edges are combined and molded into a tubular shape.

12 Film roll 40 Conveying mechanism (conveying part)
50 Vertical seal mechanism (seal part)
52 Horn 54 Anvil (driven roller)
58 Horn position movement mechanism (separation mechanism)
80 Control unit (control unit)
100 Bag making and packaging machine F Film Fa 1st side edge (one of the side edges of the film)
Inner surface of Fai 1st side edge Fb 2nd side edge (the other side of the film)
The inner surface of the Fbi second side edge Fbo the outer surface of the second side edge

Japanese Unexamined Patent Publication No. 2016-222261

Claims (7)

The film is unwound from the film roll, and the inner surface of one side edge and the outer surface of the other side edge are aligned, or the inner surfaces of both side edges are aligned with each other to convey the film formed into a tubular shape. Transport section and
A sealing portion having a horn and an anvil that hit the film conveyed by the conveying portion so as to sandwich the film with respect to the combined both side edges thereof, and ultrasonically sealing the both side edges of the film.
A control unit that controls the operation of the transport unit and the seal unit,
With
The control unit has a normal first mode in which the sealing portion is ultrasonically sealed while transporting the film, and the horn having an amplitude smaller than the amplitude of the horn in the normal first mode while transporting the film. and a second mode for vibrating the, possess as a control mode,
The sealing portion does not ultrasonically seal the both side edges of the conveyed film during the second mode.
Bag making and packaging machine. In the second mode, the control unit causes the film to be conveyed to the transfer unit at a speed lower than the transfer speed of the film in the normal first mode.
The bag-making and packaging machine according to claim 1. The second mode is executed when the film roll is replaced.
The bag-making and packaging machine according to claim 1 or 2. The control unit vibrates the horn at the same frequency in the normal first mode and the second mode.
The bag-making and packaging machine according to any one of claims 1 to 3. In the second mode, the control unit vibrates the horn with an amplitude of half or less of the amplitude of the horn in the normal first mode.
The bag-making and packaging machine according to any one of claims 1 to 4. The anvil is a driven roller that rotates in accordance with the transportation of the film.
The bag-making and packaging machine according to any one of claims 1 to 5. The seal further comprises a manual separation mechanism that moves at least one of the horn and the anvil away from the film.
The bag-making and packaging machine according to any one of claims 1 to 6.

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