JP2012171769A - Paper feed roll of sack filling packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper feed roll of a sack filling packaging machine enabled in a paper feed roll that the transfer of a stable strip packing material becomes possible without generating a rut caused by abrasion even if a packing material of the same width dimension is continuously used for a long period of time and further easily performing working in setting the strip packing materials.SOLUTION: A rut caused by abrasion by contact with the packing material is not generated in a rubber roll 1b even if used for a long period of time because the rubber covering section 10 of the rubber roll 1b is shorter than that of a section which comes in contact with the packing material of an iron roll 1a and is manufactured shorter than the one of minimal width dimension out of packing materials commonly used, and the setting work of the packing materials is easily performed since a section having no rubber covering section 10 has a wide gap from the iron roll 1a.

Description

  The present invention relates to a paper feed roll of a bag making filling and packaging machine.

  The bag making filling and packaging machine is configured to bend a belt-like packaging material into a cylindrical shape by a bag making machine, to provide a center seal on the overlapping surface of the longitudinal edge portion thereof, and to form a cylindrical packaging material. The packaged product is manufactured by feeding the packaged product into the interior and further performing end sealing and cutting before and after sandwiching the packaged product inside the cylindrical packaging material. The bag making and filling machine includes a horizontal bag making and filling machine and a vertical bag making and filling machine.

  In the horizontal bag making and filling machine, the cylindrical packaging material is conveyed in the horizontal direction, and the products to be packaged are sequentially delivered and supplied at predetermined intervals by the supply conveyor, and the longitudinal length of the cylindrical packaging material to which the products to be packaged are supplied is supplied. A pillow package is manufactured by applying a center seal to the overlapped surface of the edge in the direction and further end-sealing and cutting with an end-seal device before and after sandwiching the cylindrical film article. The horizontal bag-filling and packaging machine conveys a packaging material in cooperation with a paper feed roll upstream of the cylinder making machine and a paper pulling roll downstream of the cylinder making machine (see, for example, Patent Document 1). )

  The vertical bag making filling and packaging machine provides a center seal on the overlapping surface of the longitudinal edge of the cylindrical packaging material in which the cylindrical packaging material is conveyed in the vertical direction and the product to be packaged is supplied from above. A pillow package is produced by end sealing and cutting by an end seal device before and after sandwiching the article of the film-like film. Some vertical bag filling and packaging machines transport packaging materials by cooperation of a paper feed roll upstream of the cylinder making machine and a paper pulling belt downstream of the cylinder making machine (for example, patents). (Ref. 2).

  As shown in FIG. 7, the paper feed roller 1 located upstream from the cylinder making machine is composed of a pair of rolls and conveys the belt-shaped packaging material Fw by rotating in the reverse direction while sandwiching the belt-shaped packaging material. And is installed between a paper feed roll base 15 supported by a main body frame 14 and a plurality of stays 13 (only one is drawn in the figure). One of the pair of rolls is made of metal (hereinafter referred to as iron roll 1a), and the other is a roll (hereinafter referred to as rubber roll 1b) in which an elastic member having a high coefficient of friction such as rubber is wound around the surface of the metal roll. is there. One end of the rotating shaft 6a of the iron roll 1a is rotatably attached to the main body frame 14, and the other is rotatably attached to the paper feed roll base 15. The servo motor 2 is attached to the end of the main body frame 14 side. It is driven by the servo motor 2 and rotates at a constant speed to convey the belt-shaped packaging material Fw. The rubber roll 1b is rotatably mounted between the main body frame 14 and the paper feed roll base 15 in the same manner as the iron roll 1a, and serves to press the belt-shaped packaging material Fw against the iron roll 1a by the biasing means 3 such as a spring. It is free to rotate but has no drive means. This is because the belt-shaped packaging material Fw to be conveyed is brought into close contact with the peripheral surface of the iron roll 1a by an urging means 3, such as a spring, with an elastic rubber roll 1b having a high coefficient of friction so as to prevent the slippage, thereby realizing accurate feeding. This is to make it happen.

  In addition, the paper feed roller 1 is configured to be openable and closable in order to perform an operation of setting the belt-shaped packaging material Fw. Opening and closing is performed by an opening / closing lever 4 and a cam 5 attached to a rotating shaft 6b of the rubber roll 1b via a joint (not shown). A joint (not shown) rotatably holds the rotating shaft 6b of the rubber roll 1b, and the rotating shaft 6b is attached to the opening / closing lever 4 and the cam 5. For this reason, the rotation of the rotary shaft 6 b is not transmitted to the opening / closing lever 4 and the cam 5. Further, the biasing means 3 such as a spring is provided with a pressure adjusting screw 7 so that the biasing force can be adjusted. This technique of transporting the belt-shaped packaging material Fw by a pair of rolls composed of an iron roll and a rubber roll is a well-known technique that is used not only by packaging machines but also by printing machines (see, for example, Patent Document 3).

  By the way, the conventional rubber roll 1b has wound an elastic member having a high friction coefficient such as rubber over the entire width of the iron roll 1a. The width of the strip-shaped packaging material Fw that can be used is naturally less than or equal to this roll width. As shown in FIG. 8, when the rubber roll 1b continues to be used for a long period of time and uses a packaging material having the same width, the contact portion with the belt-like packaging material Fw of an elastic member having a high friction coefficient such as rubber wound around the surface is worn away. In addition, a phenomenon of soaking from a portion that is not in contact with the belt-shaped packaging material Fw, so-called wrinkles 8, occurs. When a film having a width of 8 or less is used in a state where the rubber roll 1b is wrinkled, the force of pressing the band-shaped packaging material Fw against the iron roll is reduced due to the depression of the wrinkle 8, and the belt-shaped packaging material is driven. There was a difficulty that the iron roll 1a having a force for transporting Fw and the strip-shaped packaging material Fw slipped, making it impossible to stably transport the strip-shaped packaging material Fw. FIG. 5B shows a decrease 9 in gripping force due to the flange 8. Furthermore, since the covering portion around which the elastic member having a high friction coefficient of the rubber roll 1b is wound extends over the entire width of the iron roll, there is a problem that workability when setting the strip-shaped packaging material Fw is poor.

Japanese Examined Patent Publication No. 7-110645, page 5, left column, lines 8 to 24 Paragraph 15 From the ninth line to the fourteenth line and FIG. JP, 10-235955, A The fifth line to the 17th line of paragraph 4 and FIG.

  Even if a packaging material having the same width dimension is used continuously for a long period of time, it is possible to realize a paper feed roll 1 that does not cause wrinkles due to abrasion and can stably transport the belt-like packaging material. Therefore, there is a demand for a paper feed roll for a bag-filling-packaging machine that can easily perform the above operation.

In a paper feed roller of a bag-making filling and packaging machine that conveys the band-shaped packaging material by rotating while sandwiching the band-shaped packaging material by a pair of rolls,
Of the pair of rolls, one roll is a metal roll having a driving force, and the other is a so-called rubber roll having a surface coated with an elastic member having a high coefficient of friction such as rubber. It is a paper feed roll of a bag-filling and packaging machine, characterized in that it is manufactured shorter than the width of the metal roll.

  According to the first invention, the portion of the rubber roll without the rubber coating has a wide gap with the metal roll, so that the packaging material can be easily set. be able to.

  The second invention relates to the first invention, wherein the length of the metal roll to be contacted with the strip-shaped packaging material is the same as that of the packaging material having the largest width dimension among the packaging materials to be used. The bag making and filling packaging according to claim 1, wherein the packaging material is manufactured to be equal to the width and shorter than the width of the packaging material having the smallest width dimension among the packaging materials used also as the covering portion of the rubber roll. It is a paper feed roll of the machine.

  According to the second invention, since the width of the rubber-coated portion of the rubber roll is smaller than the width of the packaging material having the smallest width dimension among the packaging materials to be used in combination, any of the packaging materials that are also used is long. Even if it is used for a long period of time, no wrinkles due to abrasion occur, and a stable strip-shaped packaging material can be conveyed.

  A third invention relates to the first invention or the second invention, wherein the rubber roll has a rotational force transmission mechanism and can receive supply of rotational force from the metal roll having a drive portion. It is a paper feed roll of the bag making filling packaging machine characterized by these.

  According to the third invention, since the rubber roll is supplied with the rotational force from the metal roll, both of the pressing rollers have a packaging material conveyance capability, so that the packaging material can be conveyed stably. it can.

  A fourth invention relates to any one of the third invention from the first invention, characterized in that the bag making and filling machine is a horizontal bag making and filling machine for conveying a packaging material in a horizontal direction. It is a paper feed roll of the bag making filling packaging machine.

  A fifth invention relates to any one of the third invention from the first invention, wherein the bag making filling packaging machine is a vertical bag making filling machine for conveying a packaging material in a vertical direction. It is a paper feed roll of the bag making filling packaging machine characterized.

  In the present invention, the width of the covering portion of the rubber roll is shorter than the minimum size of the film to be used in combination, so even if a film having the same width dimension is used continuously for a long time, wrinkles due to abrasion will not occur. In addition, since the driving force is transmitted to the rubber roll, stable film conveyance is possible. Further, since the width of the rubber-coated portion of the rubber roll is shorter than the width of the metal roll, the portion without the rubber coating is in contact with the metal roll peripheral surface. Since the gap is wide, it is easy to set.

It is the schematic of the horizontal type bag making filling packaging machine with which this invention is applied. It is the schematic of the paper feed roll of the bag making filling packaging machine of this invention. It is a perspective view of the paper feed roll of the bag making filling packaging machine of the present invention. It is the figure which compared the set operation | work of the strip | belt-shaped packaging material with the prior art example. It is the figure which showed the example of arrangement | positioning of an iron roll and a rubber roll. It is a figure of the vertical type bag making filling packaging machine to which the present invention is applied. It is a perspective view of the paper feed roll of the bag making filling packaging machine of a prior art example. It is a figure explaining a wrinkle being made in the passage part of a packaging material with the paper feed roll of the bag making filling packaging machine of a prior art example.

  Embodiments in the case where the present invention is applied to a horizontal bag making filling and packaging machine will be described with reference to the drawings. FIG. 1 is a schematic view of a horizontal bag making filling and packaging machine. The strip-shaped packaging material Fw drawn out from the winding roll Fr is conveyed downstream by a paper feed roller 1 composed of an iron roll 1a and a rubber roll 1b driven by a servo motor 2, curved by a cylinder making machine 22, and lengthened. The edge portion in the direction is polymerized to form a cylindrical packaging material Ft. As for the cylindrical packaging material Ft, the paper-drawing roller 23 comprised of a pair of rolls that the packaged product P is conveyed into the cylinder by a supply conveyor (not shown) and holds the overlapping portion of the cylindrical packaging material Ft rotates. By this, it is conveyed further downstream. The paper drawing roller 23 is rotationally driven by a paper drawing roll driving servo motor 24. The center seal device 20 downstream of the paper drawing roller 23 performs center seal on the overlapping surface of the cylindrical packaging material Ft. After that, the cylindrical packaging material Ft containing the packaged product P is end-sealed and cut before and after the packaged product P inside the cylindrical packaging material Ft is sandwiched by the end seal device 21, so that the pillow package Bp is To manufacture. The end seal device incorporates a cutter (not shown) and cuts it.

  A detailed configuration of the paper feed roller 1 will be described with reference to FIGS. 2 is a schematic view of the paper feed roller 1 as seen from the packaging material conveyance direction, and FIG. 3A is a perspective view of the state in which the paper feed roller 1 is opened as seen from the packaging material conveyance direction. FIG. 3B is a perspective view of the closed state of the paper feed roller 1 as viewed from the packaging material conveyance direction. As described above, the paper feed roller 1 is a device that conveys the belt-shaped packaging material Fw toward the downstream cylinder making machine 22. As shown in FIG. 3B, the iron roll 1a and the rubber roll 1b rotate with each other while sandwiching the belt-like packaging material Fw, thereby conveying the belt-like packaging material Fw.

  As shown in FIG. 1, the paper feed roller 1 is installed on the conveyance path of the strip-shaped packaging material Fw between the packaging material roll Fr and the cylinder making device 22. As shown in FIGS. 2 and 3, in the paper feed roller 1, an iron roll 1a and a rubber roll 1b are rotatably installed between a main body frame 14 and a paper feed roll base 15. The main body frame 14 and the paper feed roll base 15 are firmly connected by a plurality of stays 13 (only one is drawn in the drawing). The iron roll 1a is a metal roll having a smooth peripheral surface, and an iron material is used in this embodiment. The iron roll 1a has one end of a rotating shaft 6a rotatably fixed to the main body frame 14 and the servo motor 2 connected thereto, and the other end fixed to the paper feed roll base 15 rotatably. The Further, a gear 12a for rotation conduction to the rubber roll 1b is disposed on the rotating shaft 6a.

  The rubber roller 1b is fixed so that one end portion of the rotation shaft 6b is rotatable to the main body frame 14 and can be moved back and forth with respect to the installation direction of the iron roll. The other end is rotatable to the paper feed roll base 15 and is fixed so as to be able to advance and retreat with respect to the installation direction of the iron roll, and an opening / closing cam 5 (not shown) is provided. An opening / closing lever 4 is attached with the pinch in between. A joint (not shown) of the opening / closing cam and the opening / closing lever 4 (not shown) rotatably holds the rotating shaft 6b of the rubber roll 1b, and the opening / closing lever 4 and the cam 5 are attached to the rotating shaft 6b. For this reason, the rotation of the rotary shaft 6 b is not transmitted to the opening / closing lever 4 and the cam 5. The rotating shaft 6b of the rubber roll 1b is provided with a biasing means 3 such as a spring that biases the rubber roll 1b in the direction of the iron roll 1a. Further, the biasing means 3 such as a spring is provided with a pressure adjusting screw 7 so that the biasing force can be adjusted. With this configuration, the rubber roller 1b can be brought into contact with or separated from the iron roll 1a, that is, the paper feed roller 1 can be opened and closed by rotating the opening / closing lever 4. Since this open / close structure is the same as that of the conventional example, description will be made with reference to FIG. When the opening / closing lever 4 is rotated, the cam 5 is rotated, so that the rubber roll 1b advances and retreats with respect to the iron roll 1a, and is strongly pressed by the biasing means 3 such as a spring when contacting the iron roll 1a. At the time of separation, the separated position is held by the shape of the cam 5. 2 and 3, when the rubber roll 1b and the iron roll 1a are in contact with each other, that is, when the paper feed roller 1 is closed, the gear 12a and the gear 12b are engaged with each other to form the rotation conducting portion 12, and the servo motor The rotation is transmitted to both rolls, and the belt-shaped packaging material Fw is conveyed in cooperation.

  As shown in FIG.2 and FIG.3, the rubber roll 1b is provided with the shaft part 11 and the rubber coating | coated part 10 on the rotating shaft 6b. The rubber covering portion 10 is a portion in which an elastic member having a high coefficient of friction such as rubber is wound on the shaft portion 11, and the rubber covering portion 10 comes into contact with the belt-shaped packaging material Fw and strongly presses against the iron roll 1a. Part. The length of the rubber covering portion 10 in the width direction is shorter than that of the iron roll 1a. Specifically, the rubber covering portion 10 is manufactured so that the length in the width direction is shorter than the smallest packaging material that the machine user intends to use in the machine. Thereby, even if it is a case where it uses for a long period of time, generation | occurrence | production of the flaw 8 shown in FIG. Further, as shown in FIG. 4B, the portion other than the rubber covering portion 10 of the rubber roller 1b, that is, the shaft portion 11, has a wide gap with the iron roll 1a, so that the operator's hand 30 can easily enter, and the packaging material is fed by paper. The operation of setting the roller 1 can be performed much more easily than the conventional example shown in FIG.

  In this embodiment, as shown in FIG. 1 and FIG. 5 (b), the paper feed roller 1 is installed between the packaging material roll Fr and the cylinder making machine 22, and the iron roll 1a is arranged upward and the rubber roll 1b is arranged downward. However, as long as the belt-like packaging material Fw can be transported between the packaging material roll Fr and the cylinder making device 22, even if it is arranged horizontally as shown in FIG. 5 (a), as shown in FIG. 5 (c). It may be arranged diagonally.

  The present invention is also applicable to a vertical bag making and filling machine as shown in FIG. The vertical bag making filling and packaging machine has a center seal device 20 on the overlapping surface at the edge in the longitudinal direction of the cylindrical packaging material Ft in which the cylindrical packaging material Ft is conveyed in the vertical direction and the article P to be packaged is supplied from above. The pillow package Bp is manufactured by performing end sealing and cutting by the end sealing device 21 before and after sandwiching the cylindrical film article. In the vertical bag making and filling machine, the packaging material is conveyed by the cooperation of the paper feed roll 1 upstream of the cylinder making machine and the paper drawing belt 25 downstream of the cylinder making machine 22. The paper feed roll 1 of this vertical bag making filling and packaging machine is located above the cylinder making machine 22 and transports the belt-like packaging material Fw by rotating the belt-like packaging material Fw with the iron roll 1a and the rubber roll 1b. It is carried out. Since the present invention is applied, the detailed configuration is the same as FIG. Therefore, as described above, the width of the rubber covering portion 10 of the rubber roll 1b is made shorter than the width of the iron roll 1a. Further, since the width of the rubber covering portion 10 is made to be shorter than the minimum dimension among the films used by the machine user, even if a film having the same width dimension is used continuously for a long period of time.轍 8 due to wear and tear does not occur. Moreover, since it is comprised so that a driving force may be transmitted also to the rubber roll 1b, the stable film conveyance is possible, and also the width | variety of the rubber coating part of a rubber roll is shorter than the width | variety of a metal roll, Therefore Since the gap between the metal roll and the peripheral surface is wide, the set operation can be performed easily.

DESCRIPTION OF SYMBOLS 1 Paper feed roller 1a Iron roll 1b Rubber roll 2 Servo motor for paper feed motor drive 3 Energizing means such as a spring 4 Opening / closing lever 5 Cam 6a Rotating shaft of iron roll 6b Rotating shaft of rubber roll 7 Pressure adjusting screw 8 グ リ ッ プ 9 10 Rubber covering portion 11 Shaft portion 12 Rotation transmitting portion 12a, 12b Gear 13 Stay 14 Body frame 15 Paper feed roll base 20 Center seal device 21 End seal device 22 Cylinder 23 Paper drawing roller 24 Paper drawing roller drive Servo motor 25 Paper drawing belt 30 Worker's hand

Claims (5)

In the paper feed roller of the bag-making filling and packaging machine that conveys the belt-shaped packaging material by rotating while sandwiching the belt-shaped packaging material with a pair of rolls,
Of the pair of rolls, one roll is a metal roll having a driving force, and the other is a so-called rubber roll having a surface coated with an elastic member having a high coefficient of friction such as rubber. A paper feed roll for a bag-filling-packaging machine, characterized in that it is made shorter than the width of a metal roll.   A packaging material that is used also as the width of the packaging material having the maximum width dimension of the packaging material that is also used as the contact portion of the metal roll with the band-shaped packaging material, and that is also used as the coating part of the rubber roll. The paper feed roll of the bag making filling and packaging machine according to claim 1 or 2, wherein the width dimension of the bag is shorter than the width of the smallest packaging material.   The bag making filling and packaging machine according to claim 1 or 2, wherein the rubber roll has a rotational force transmission mechanism and can receive a rotational force from the metal roll having a driving portion. Paper feed roll.   The paper for a bag making and filling machine according to any one of claims 1 to 3, wherein the bag making and filling machine is a horizontal bag making and filling machine for conveying a packaging material in a horizontal direction. Feed roll.   The bag making and filling machine according to any one of claims 1 to 3, wherein the bag making and filling machine is a vertical bag making and filling machine that conveys a packaging material in a vertical direction. Paper feed roll.

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