JP4162922B2 - End seal device for horizontal bag making and filling machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a horizontal bag making and filling machine that forms a strip-shaped film into a cylindrical shape, supplies articles at a predetermined interval into the molded cylindrical film, and end-seals between the articles containing the cylindrical film. More particularly, the present invention relates to an end seal device provided with a conveyor for transferring a cylindrical film on the upstream side and the downstream side in the film transfer direction of a sealing body that sandwiches the cylindrical film and performs end sealing. Is.
[0002]
[Prior art]
As an end seal device for the horizontal bag making and filling machine, for example, one having a configuration disclosed in Japanese Patent Laid-Open No. 2-282005 has been proposed. In this apparatus, a pair of seal bodies facing each other up and down across the transfer path of the tubular film is provided, and both the seal bodies are held in a state of sandwiching the tubular film by contacting both the seal bodies. The so-called box motion method is adopted, which moves synchronously along the transfer direction and seals (heat seal), then moves away from each other, retreats, and repeats the movement of moving against each other again. Yes.
[0003]
The end seal device is provided with transfer conveyors on both the upstream side and the downstream side between both seal bodies, and the downstream end pulley of the upstream conveyor and the upstream end pulley of the downstream conveyor are synchronized with both seal bodies in the film transfer direction. While moving, the upstream end pulley of the downstream conveyor moves away from and close to the downstream end pulley of the upstream conveyor in synchronization with the contact and separation of both seal bodies, and the lengths of the transfer surfaces of both conveyors change. It is configured as follows. And the change of the length of the transfer surface of each conveyor respond | corresponds by providing the idle pulley (movable belt roll for bending | flexion removal) which moves integrally with a downstream end pulley or an upstream end pulley.
[0004]
[Problems to be solved by the invention]
However, in the configuration including the idle pulley that moves integrally with the upstream and downstream end pulleys as described above, the length of the conveyor is increased due to the configuration, and particularly for the upstream conveyor, the length of the conveyor is increased, so that both seals The position of the body is shifted to the downstream side, and the distance from the bag making machine for forming the belt-like film into a cylindrical shape to the position of both the seal bodies is increased, which causes the following problems.
[0005]
For example, when the operation of the horizontal bag making and filling machine is stopped at the end of the packaging operation, the articles in the cylindrical film between the bag making machine and the positions where the two seal bodies are disposed are transferred to the cylindrical film. Then, the sheet is sent to a position exceeding the arrangement position of the seal body and then stopped. At this time, an end seal is applied to the tubular film corresponding to each article, and the obtained package is discharged. In this state, since there is no article in the cylindrical film between the bag making machine and the position where both seal bodies are disposed, the next time the horizontal bag making and filling machine is started, the portion becomes an empty bag. Therefore, if the upstream conveyor length becomes longer due to the above-described configuration, more empty bags are generated when the bag making and filling machine is started, resulting in film loss.
[0006]
OBJECT OF THE INVENTION
The present invention has been proposed in view of the above-mentioned problems inherent in the prior art described above, and has been proposed to suitably solve this problem. The distance between the bag-making device and both seal bodies is shortened, and An object of the present invention is to provide an end seal device for a horizontal bag making and filling machine capable of suppressing loss.
[0007]
[Means for Solving the Problems]
  In order to overcome the above-mentioned problems and achieve the intended purpose, an end seal device for a horizontal bag making and filling machine according to the present invention comprises:
  Articles are arranged so as to be able to move close to and away from each other at the upper and lower positions sandwiching the transfer path of the cylindrical film supplied to the inside at predetermined intervals, and hold the cylindrical film close to each other on the upstream side in the film transfer direction. A pair of sealing bodies that move to the downstream side with the tubular film in a state where they are moved to the upstream side after being subjected to end sealing between the articles of the tubular film,
  A bed that is provided on the upstream side of the arrangement position of the two seal bodies and supports the article supplied into the cylindrical film from below;
  Articles supplied into the tubular film delivered from the bed on the upstream side in the film transfer direction from the position where the seal body is disposedOn the goods transfer surfaceAn endless first transfer conveyor provided so as to be placed and transferred and horizontally movable in the film transfer direction;
  An endless second transfer conveyor that is provided downstream of the sealing body in the film transfer direction and transfers the package obtained by end sealing;
  Of the first transfer conveyor and the second transfer conveyorOppositeBoth ends of the seal bodyofAlong the film transfer directionUMoveAs it moves horizontally withAs the pair of seal bodies move in proximityYes, phaseAllowing the lower seal body to move upward on both conveyors apart from each otherAnd againAs the pair of seal bodies move away from each other, interlocking means for relatively approaching the opposite ends of both conveyors,
  A motor disposed on the second transfer conveyor for driving the transfer conveyor;
  Rotation transmission means for allowing relative position changes of opposite ends of the two conveyors and transmitting the rotational driving force of the second transfer conveyor to the first transfer conveyor;
  The first transfer conveyor is disposed upstream of the film transfer direction together with both seal bodies.HorizontalMoveDoWhenWithout changing the length of the article transfer surfaceMove to the bottom of the bedTo doConstitutiondidIt is characterized by that.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, a preferred embodiment of the end seal device for a horizontal bag making and filling machine according to the present invention will be described below with reference to the accompanying drawings. In addition, in an Example, the direction orthogonal to the horizontal transfer direction of a cylindrical film shall be called a front-back direction.
[0009]
FIG. 1 shows a main part of an end seal device of a horizontal bag making and filling machine according to an embodiment of the present invention. A strip shape drawn from a supply source (not shown) is provided upstream of the end seal device 10. A bag-making device 12 for forming the film into a cylindrical shape is disposed, and a continuous polymerization edge in the longitudinal direction of the obtained cylindrical film 11 is sandwiched and rotationally driven so as to be continuous with the cylindrical film 11. A center seal mechanism 14 in which heating rollers 13 and 13 (only one of them is shown) for providing a center seal is disposed below the transfer path of the tubular film 11.
[0010]
Above the center seal mechanism 14, a bed 16 is horizontally disposed as a support member for supporting the bottom surface of the article 15 supplied into the cylindrical film 11 from below through the film. The overlapping edge portion in the longitudinal direction of the tubular film 11 extending downward from the slit formed along the film transfer direction is sandwiched between the heating rollers 13 and 13. That is, the article 15 supplied into the tubular film 11 is transferred toward the downstream side with the transfer of the tubular film 11 while being placed on the bed 16.
[0011]
In the end seal device 10, a first transfer conveyor (upstream conveyor) 18 is disposed on the upstream side of the machine frame 17 in the film transfer direction, and the first transfer conveyor 18 and the transfer level on the downstream side thereof. Are arranged in series. A second transfer conveyor (downstream conveyor) 19 is provided in series. The upper first seal body (seal body) 20 moves in the film transfer direction and moves in the vertical direction toward and away from each other (opening / closing operation) correspondingly between the opposing ends of the conveyors 18 and 19. And an end seal mechanism 22 including a lower second seal body (seal body) 21 is disposed.
[0012]
The end seal mechanism 22 is provided with a support frame 23 formed in a frame shape on the machine frame 17 facing the rear side with respect to the arrangement position of the first transfer conveyor 18 and the second transfer conveyor 19. A frame 24 is attached to the support frame 23 so as to be movable in the vertical direction. As shown in FIG. 3, the first rotating body 25 is disposed above the frame body 24, and the second rotating body 26 is disposed below the frame body 24. Further, the first cylindrical body 27 is connected to the position eccentric from the rotation axis of the first rotating body 25 so as to be integrally rotatable, and at a position eccentric from the rotation axis of the second rotating body 26. The 2nd cylindrical body 28 is connected, and it is comprised so that integral rotation is possible (refer FIG. 2). The rotation axis of the first rotating body 25 and the rotation axis of the second rotating body 26 are set on the same vertical plane and in parallel.
[0013]
As shown in FIG. 2, a shaft portion (not shown) of the first holding member 29 facing the upper side of the transfer path of the tubular film 11 is inserted into the first tubular body 27 of the first rotating body 25 from the front side and rotated. The first seal body 20 is disposed on the lower surface of the holding member 29 in a downward state in which the seal surface faces the transfer path of the tubular film 11. The first seal body 20 is disposed so as to be movable in the vertical direction with respect to the first holding member 29 via support shafts 31, 31 and is always lowered downward by a compression coil spring as an elastic member (not shown). It is to be biased towards. Further, on the second cylindrical body 28 in the second rotating body 26, a shaft portion (not shown) of the second holding member 30 facing the lower side of the transfer path of the cylindrical film 11 is inserted from the front side and is rotatably supported. The second seal body 21 is disposed on the upper surface of the holding member 30 in an upward state in which the seal surface faces the transfer path of the tubular film 11. Then, by rotating the pair of rotating bodies 25 and 26 in opposite directions by a drive mechanism (not shown), the pair of seal bodies 20 and 21 facing (positioning) vertically across the transfer path has a posture not shown. The holding mechanism allows the seal surfaces to be circularly moved with the same rotation radius in opposite directions while maintaining the posture in which the seal surfaces face each other. In addition, both the sealing bodies 20 and 21 are heated to a predetermined temperature by a built-in heater, and are configured to thermally seal the tubular film 11.
[0014]
The circular motion trajectories of the pair of seal bodies 20 and 21 are set so as to overlap in a predetermined section. In the overlapping section, the first seal body 20 is retracted upward so that both the seal bodies 20 and 21 are in contact with the cylindrical film 11 sandwiched by a predetermined pressure by the compression coil spring toward the downstream side. It is configured to move and apply an end seal to the film 11 under a predetermined pressure. That is, both the sealing bodies 20, 21 sandwich the tubular film 11 close to each other on the upstream side in the film transfer direction, and the required distance toward the downstream side together with the film 11 transferred while maintaining this state. After the movement, they are separated from each other and return to the upstream position again. Further, the first seal body 20 is provided with a cutter 32, and is configured to cut a portion of the tubular film 11 where the end seal is applied at the time of contact with the second seal body 21.
[0015]
As shown in FIG. 5, the machine frame 17 extends on both the front and rear sides across the transfer path of the tubular film 11 along the upstream and downstream sides of the seal bodies 20, 21 along the film transfer direction. The existing guide rails 33 are arranged in parallel. A first slide base 35 is mounted between the portions of the guide rails 33, 33 facing the upstream side of the seal bodies 20, 21, via the sliders 34, 34 so as to be movable in the film transfer direction. The first transfer conveyor 18 is disposed on a table 35. The first transfer conveyor 18 includes a plurality of first pulleys (pulleys) 18a pivotally supported between a pair of side plates 35a and 35a that are separated from each other before and after the first slide base 35. A first endless belt (belt) 18b is wound around the first pulley 18a so as to be able to run. Then, the first slide base 35 moves horizontally along the guide rails 33, 33 along with the movement of the seal bodies 20, 21 in the film transfer direction via the interlocking means 53 described later. The transfer conveyor 18 itself moves in the film transfer direction.
[0016]
As shown in FIG. 4, a first pulley (upstream end) 18a located at the upstream end constituting the first transfer conveyor 18 is disposed below the transfer surface of the article 15, and the pulley 18a extends in the film transfer direction. The first endless belt 18b that travels toward the downstream side forms an article transfer surface that is set to shift to horizontal travel after traveling while tilting upward. The horizontal portion where the first endless belt 18b travels horizontally to the first pulley (downstream end) 18a at the downstream end is set at a level below the article placement surface of the bed 16. When the first transfer conveyor 18 moves to the upstream side in the film transfer direction together with the seal members 20 and 21, the upstream end side extends over a predetermined length as shown by a two-dot chain line in FIG. It moves to the lower side of the bed 16, and it is comprised so that the distance between the arrangement position of both the sealing bodies 20 and 21 and the said bag making apparatus 12 can be shortened.
[0017]
As shown in FIG. 4, a second slide base 37 is movably mounted in the film transfer direction via sliders 36, 36 between the portions of the guide rails 33, 33 facing the downstream sides of the seal bodies 20, 21. A plurality of second moving pulleys (pulleys) 19 a are pivotally supported between a pair of side plates 37 a and 37 a that are spanned and are separated from each other before and after the second slide base 37. In addition, a plurality of second fixed pulleys 19b are rotatably supported at portions facing the downstream sides of both seal bodies 20, 21 of the machine frame 17, and a second endless belt is interposed between the movable pulley 19a and the fixed pulley 19b. The (belt) 19c is wound so as to be able to run, and the second transfer conveyor 19 is configured. Then, the second slide base 37 moves horizontally along the guide rails 33 and 33 as the seal members 20 and 21 move toward and away from each other and move in the film transport direction via the interlocking means 53 described later. As a result, the second moving pulley (upstream end) 19a at the upstream end of the second transfer conveyor 19 moves in the film transfer direction. The horizontal portion that travels horizontally from the second moving pulley 19a at the upstream end toward the downstream side in the film transfer direction forms an article transfer surface.
[0018]
As shown in FIG. 1, a motor 38 as a driving means disposed in the machine frame 17 is connected to the second fixed pulley 19 b disposed in the machine frame 17 at a predetermined position. The second endless belt 19c travels in the required direction by rotating the two fixed pulleys 19b in the required direction. The second endless belt 19c is set so as to be faster than the film transfer speed, and the preceding package body that has been end-sealed and cut by the both seal bodies 20 and 21 of the end seal mechanism 22 is replaced with the subsequent unfinished package body. It is configured to be surely separated from the package and discharged.
[0019]
The first pulley 18a located at the downstream end of the first transfer conveyor 18 and the second moving pulley 19a located at the upstream end of the second transfer conveyor 19 are connected via a rotation transmission means 39, and the motor 38 Thus, the first endless belt 18b of the first transfer conveyor 18 is configured to travel at the same speed as the second endless belt 19c of the second transfer conveyor 19. As shown in FIG. 4, the rotation transmission means 39 includes an inverted L-shaped support plate 40 disposed on the front surface of the side plate 37 a located on the front side of the second slide base 37. A drive pulley 41 that rotates integrally with the second moving pulley 19a at the upstream end is rotatably supported on the upper portion of the portion 40a, and a first idle pulley 42 is rotatably supported on the lower portion thereof. Has been. A second idler pulley 43 is pivotally supported at the upstream end position of the horizontal portion 40b extending from the lower end portion of the vertical portion 40a to the upstream side by a predetermined length. Further, a driven pulley 44 that rotates integrally with the first pulley 18a at the downstream end is rotatably supported on the front surface of the side plate 35a located on the front side of the first slide base 35, and the driven pulley 44 A third idler pulley 45 is pivotally supported on the lower side of the drive pulley 41, the driven pulley 44 and the first to third idler pulleys 42, 43, 45, which are wound so as to run. The endless belt 46 constitutes a rotation transmission means 39.
[0020]
In the rotation transmitting means 39, the downstream end of the first transfer conveyor 18 and the upstream end of the second transfer conveyor 19, that is, the first end of the downstream end, as will be described later, corresponding to the contact and separation of the seal bodies 20 and 21. Even if the pulley 18a and the second moving pulley 19a at the upstream end move apart and approach each other and the relative position changes, the transmission endless belt 46 can always maintain the linked state and transmit the rotation without being loosened. In this way, it is wound around five pulleys 41, 42, 43, 44, 45. As the endless belt 46 for transmission and the five pulleys 41, 42, 43, 44, 45, toothed ones are preferably employed so as to reliably transmit the rotation.
[0021]
As shown in FIGS. 1 and 4, a first cam groove 48 extending linearly in the vertical direction is formed in a first cam member 47 suspended from the downstream end of the first slide base 35. . The second cam member 49 suspended from the upstream end of the second slide base 37 has a lower groove 50a extending linearly in the vertical direction and a first slide upward from the upper end of the lower groove 50a. A second cam groove 50 is formed which includes an inclined groove 50b adjacent to the base 35 side and an upper groove 50c extending linearly from the upper end of the inclined groove 50b in the vertical direction. Then, an upstream first roller 51 disposed on the second holding member 30 that horizontally supports the lower second seal body 21 is fitted in the first cam groove 48 so as to be freely rotatable, and on the downstream side. The second roller 52 is fitted in the second cam groove 50 so as to roll freely. Therefore, the first pulleys 18a of the first transfer conveyor 18 disposed on the first slide table 35 and the second moving pulleys 19a of the second transfer conveyor 19 disposed on the second slide table 37 are The seal bodies 20 and 21 move in the film transport direction corresponding to the operation in the film transport direction. The first pulley 18a at the downstream end of the first transfer conveyor 18 is on the upstream side of the seal bodies 20 and 21, and the second moving pulley 19a at the upstream end of the second transfer conveyor 19 is on the seal bodies 20 and 21. 21 to correspond to the downstream side. That is, in the first transfer conveyor 18, the positional relationship between the first pulleys 18a does not change (while maintaining the positional relationship between the upstream end and the downstream end), and the conveyor length (the length of the article transfer surface) does not change. In the state, the whole of the seal bodies 20 and 21 moves in the film transfer direction in correspondence with the operation in the film transfer direction. On the other hand, the second moving pulley 19a at the upstream end of the second transfer conveyor 19 corresponds to the movement of the seal bodies 20 and 21 in the film transfer direction with respect to the fixed pulley group disposed in the machine casing 17. It moves in the transfer direction so that the conveyor length of the second transfer conveyor 19 (the length of the article transfer surface) changes.
[0022]
Further, when the second seal body 21 is positioned at the lowest point, the second moving pulley 19a at the upstream end of the second transfer conveyor 19 is close to the first pulley 18a at the downstream end of the first transfer conveyor 18. When the rollers 51 and 52 are lifted as the second seal body 21 is lifted (see FIG. 1), the second moving pulley 19a at the upstream end is separated from the first pulley 18a at the downstream end, and the both A gap is formed between the pulleys 18a and 19a directed to the seal bodies 20 and 21 to allow the second seal body 21 to move above the conveyor (see FIG. 4). In the embodiment, the first transfer conveyor 18 and the second moving pulley 19a at the upstream end of the second transfer conveyor 18 from the both cam members 47, 49 and the rollers 51, 52 are transferred to the films of the seal bodies 20, 21. Interlocking means 53 is configured to move corresponding to the movement in the transfer direction and move relatively close to and away from the movement. The cam members 47 and 49 are disposed on both front and rear sides of the corresponding slide bases 35 and 37, and the corresponding rollers 51 and 52 are also disposed on the front and rear sides of the second holding member 30.
[0023]
As shown in FIGS. 1 and 5, the machine frame 17 positioned on the upstream side of the first transfer conveyor 18 is center-sealed by the center seal mechanism 14 below the transfer path of the tubular film 11. A folding roller 54 with which the overlapping edge portion in the longitudinal direction of the tubular film 11 abuts is rotatably arranged. That is, the overlapping edge portion extending downward from the bag body portion in which the article 15 of the tubular film 11 is accommodated through the center seal mechanism 14 comes into contact with the folding roller 54 to thereby form the bag body portion. The cylindrical film 11 is smoothly transferred onto the transfer surface of the first transfer conveyor 18.
[0024]
[Effect of the embodiment]
Next, the operation of the end seal device of the horizontal bag making and filling machine according to the embodiment will be described. As shown in FIG. 1, the pair of seal bodies 20, 21 are in a state of being farthest apart from each other and allowing passage of the tubular film 11. The first pulley 18a at the downstream end of the first transfer conveyor 18 and the second moving pulley 19a at the upstream end of the second transfer conveyor 19 are closest to each other.
[0025]
A belt-like film supplied from a supply source (not shown) to the bag making machine 12 is formed into a cylindrical shape by the bag making machine 12, and the article 15 is placed in the cylindrical film 11 as the cylindrical film 11 is transferred. Supplied at predetermined intervals. The article 15 is transferred to the downstream side in a state where the article 15 is placed on the bed 16 through a film, and at the overlapping edge portion in the longitudinal direction extending downward from the bed 16 of the tubular film 11, A center seal is applied by the heating rollers 13 and 13. Further, the cylindrical film 11 transferred to the downstream side is along the bag body portion in which the overlapping edge portion in the longitudinal direction where the center seal is applied is in contact with the folding roller 54 and the article 15 is accommodated. In the bent state, it is delivered from the bed 16 together with the article 15 to the article transfer surface of the first transfer conveyor 18 and is subsequently transferred downstream.
[0026]
The pair of seal bodies 20 and 21 are driven at a required timing by a driving mechanism, and approach each other while moving toward the upstream side and then toward the downstream side according to the movement locus by the circular motion. At that time, the second holding member 30 that moves integrally with the lower second seal body 21 is raised, and rollers 51 and 52 disposed on the holding member 30 are moved to the cam members 47 and 49. By moving the cam grooves 48, 50 formed in the first transfer conveyor 18 and the second transfer conveyor 19, the second moving pulley 19 a at the upstream end of the first transfer conveyor 18 and the second transfer conveyor 19 corresponds to both the seal bodies 20, 21 in the film transfer direction. The second moving pulley 19a at the upstream end of the second transfer conveyor 19 moves away from the first pulley 18a at the downstream end of the first transfer conveyor 18 while moving toward the upstream side and then the downstream side. As a result, a required gap is generated between the pulleys 18a and 19a, and the second seal body 21 extends above the transfer conveyors 18 and 19 through the gap (see the two-dot chain line in FIG. 4). ), The tubular film 11 is sandwiched between the first seal body 20 and the first seal body 20.
[0027]
  The pair of seal bodies 20 and 21 sandwiching the cylindrical film 11 on the upstream side moves by a required distance to the downstream side along with the transfer of the cylindrical film 11, thereby adjacent articles 15 and 15 in the film transfer direction. The film 11 in between is subjected to end sealing and cutting. During the movement of the seal bodies 20 and 21 to the downstream side, the seal body is connected to the first pulley 18 a at the downstream end of the first transfer conveyor 18 and the second moving pulley 19 a at the upstream end of the second transfer conveyor 19. The first transfer conveyor 18 and the second moving pulley 1 while the required gap is maintained without contact interference between the 20, 219a moves horizontally downstream. At this time, the film transfer direction speeds of both seal bodies 20 and 21 are set to be substantially the same as the film transfer speed.
[0028]
When the pair of seal bodies 20 and 21 move away from each other to release the tubular film 11, the end seal / cut package body is end-sealed by the second transfer conveyor 19 operating at high speed. 22 is quickly transferred downstream from the arrangement position. Further, when the second seal body 21 performs a circular motion toward the lowest point and the second holding member 30 is lowered, the rollers 51 and 52 move along the cam grooves 48 and 50, thereby The second moving pulley 19a at the upstream end of the first transfer conveyor 18 and the second transfer conveyor 19 moves toward the downstream side in the film transfer direction and then toward the upstream side corresponding to both the seal bodies 20, 21, and the first The second moving pulley 19a at the upstream end of the second transfer conveyor 19 moves close to the first pulley 18a at the downstream end of the transfer conveyor 18. As a result, the clearance between the pulleys 18a and 19a is reduced, and the pulleys 18a and 19a are closest to each other as shown in FIG. 1, beyond the arrangement position of the seal bodies 20 and 21 from the first transfer conveyor 18. The article 15 is delivered to the second transfer conveyor 19 without any trouble.
[0029]
As described above, the first transfer conveyor 18 disposed on the upstream side of the pair of seal bodies 20 and 21 is configured to move in the film transfer direction in accordance with the operation of the seal bodies 20 and 21. The conveyor length (the length of the article transfer surface) along the film transfer direction can be set short, and the article transfer area on the upstream side of the arrangement position of both seal bodies 20 and 21 can be shortened. That is, the distance from the bag making device 12 to the position where the both seal bodies 20 and 21 are disposed is shortened, and the distance between the bag making device 12 and the position where the both seal bodies 20 and 21 are disposed is within the tubular film 11. The empty bag generated when the horizontal bag making and filling machine is started in the absence of the article 15 can be reduced, and the film loss can be reduced. Further, the distance to which the article 15 supplied into the cylindrical film 11 is transferred to both the sealing bodies 20 and 21 is short, and the positional deviation of the article 15 in the cylindrical film 11 is suppressed, and both the sealing bodies 20 and 21 are suppressed. The biting of the article 15 when the end seal 21 is reduced is reduced. Further, the length of the end seal device 10 itself is shortened, and the size reduction can be achieved.
[0030]
Further, when the first transfer conveyor 18 is moved to the upstream side in the film transfer direction together with the seal bodies 20 and 21, the upstream end side is moved to the lower side of the bed 16 over a predetermined length. Since it comprised, the distance between the arrangement | positioning position of both the sealing bodies 20 and 21 and the said bag making machine 12 can be made still shorter. Further, since the first and second transfer conveyors 18 and 19 are rotationally driven by one motor 38, the cost can be reduced.
[0031]
[Example of change]
  The present application is not limited to the configuration of the above-described embodiment, and other configurations can be appropriately employed.
1.First transferThe cam groove of the conveyor cam member has a lower groove that extends linearly in the vertical direction, and an inclination that extends linearly in the vertical direction and connects the upper groove and the upper and lower grooves that are located downstream of the lower groove in the film transport direction. By forming with a groove, when the lower seal body rises and falls,Second transferThe upstream pulley on the conveyorFirst transferThe conveyors (pulleys at the downstream end) may move to move away from each other.
  Also,First transferWith the cam groove of the conveyor formed by the upper groove, the lower groove and the inclined groove,Second transferThe cam groove of the conveyor may be formed in a straight line extending up and down (a configuration opposite to the embodiment), and in this case, when the lower seal body is raised and lowered,First transferConveyor (downstream pulley)Second transferIt moves with respect to the pulley of the upstream end in a conveyor, and will be spaced apart and adjoined.
2. As for the interlocking means, a roller is disposed on the conveyor side, and a cam member in which a cam groove is formed to be engaged with the roller is disposed on the lower seal body side.Second transferThe upstream pulley on the conveyorFirst transferA configuration in which the conveyor (pulley at the downstream end) moves close to or away from the conveyor may be employed.
3.First transferWith conveyorSecond transferRotation transmission means that transmits rotation to and from the conveyorFirst transferPulley shaft at the downstream end of the conveyor andSecond transferA toothed belt with a length that can be wound around each toothed pulley on the pulley shaft at the upstream end of the conveyor is adopted. It is good also as a structure which takes the slack of a toothed belt with a toothed pulley of rolling.
  And like the example,First transferPulley shaft at the downstream end of the conveyor andSecond transferWhen transmitting the rotation of both conveyors between the pulley shafts at the upstream end of the conveyor, a toothed pulley is disposed so as to be able to cope with the expansion and closing between the two conveyors.Second transferFrom a pulley that drives an endless belt in a conveyor or a shaft that does not move in the film transfer direction, such as a motor output shaft,First transferThe rotation may be transmitted to an appropriate pulley shaft of the conveyor, and in this case, as in the embodiment,First transfer coA toothed pulley, a toothed belt, or the like may be appropriately disposed so that rotation can be transmitted in response to the movement of the conveyor in the film transport direction.
4About both conveyors, it can replace with a belt conveyor and the structure used as a slat conveyor etc. can also be employ | adopted.
[0032]
【The invention's effect】
  As described above, according to the end seal device of the horizontal bag making and filling machine according to claim 1 of the present invention.The second1 transfer conveyorIs moved to the lower side of the bed provided on the upstream side of the upper and lower seal bodies without changing the length of the article transfer surface.As a result, the idle pulley provided corresponding to changing the conveyor length as in the prior art becomes unnecessary, and the article transfer area on the upstream side of the arrangement position of the upper and lower seal bodies can be shortened. it can. That is, the distance between both the sealing bodies and the bag making device disposed on the upstream side can be shortened, and the article is placed in the cylindrical film between the bag making device and the position where the both sealing bodies are disposed. When the horizontal bag making and filling machine is started in the absence, there are fewer empty bags, and film loss can be reduced. Also, TubeThe distance between the articles supplied in the cylindrical film to the both sealing bodies is shortened, and the positional deviation of the articles in the cylindrical film can be suppressed.soWhen end sealingofArticleofBitingSeeReductionCanThe In addition, the length of the end seal device itself is shortened, and the size can be reduced.
  Also both seal bodiesIsSince the tubular film is configured to move downstream in the film transfer direction together with the tubular film, a good end seal can be applied to the tubular film.The
[0033]
  In the end seal device according to claim 2,Since the upstream and downstream transfer conveyors are belt conveyors, noise during the packaging operation is reduced.In the end seal device according to claim 3,Since the endless belt for transmission of the rotation transmission means is wound around a plurality of pulleys so that it does not loosen even when the opposite ends of the first transfer conveyor and the second transfer conveyor move away from each other, they are always suitable for both transfer conveyors. Rotation can be transmitted to
[Brief description of the drawings]
FIG. 1 is a schematic front view of an essential part showing an end seal device of a horizontal bag making and filling machine according to an embodiment of the present invention in a state where upper and lower seal bodies are spaced apart from each other.
FIG. 2 is a schematic side view of an essential part of the end seal device according to the embodiment, partially broken away.
FIG. 3 is a schematic front view showing an end seal mechanism according to the embodiment.
FIG. 4 is a schematic front view showing the upstream and downstream conveyors of the end seal device according to the embodiment.
FIG. 5 is a schematic plan view showing the upstream and downstream conveyors of the end seal device according to the embodiment.
[Explanation of symbols]
  11 Tubular film
  12 Bag making machine
  15 goods
  16Do
  18 First transfer conveyorYa
  18a First pulley (pulley)
  18b first endless belt (Endlessbelt)
  19 Second transfer conveyorYa
  19a Second moving pulley (pulley)
  19c Second endless belt (Endlessbelt)
  20 First seal body (seal body)
  21 Second seal body (seal body)
  35 First slide base
  37 Second slide base
  38 motor
  39 Rotation transmission means
  41 Drive pulley
  42 First idle pulley ( Idle pulley )
  43 Second idler pulley ( Idle pulley )
  44 Driven pulley
  45 3rd idler pulley ( Idle pulley )
  46 Endless belt for transmission
  53 Interlocking means

Claims (3)

The article (15) is disposed so as to be able to move close to and away from the vertical position across the transfer path of the cylindrical film (11) supplied inside at a predetermined interval, and close to each other on the upstream side in the film transfer direction. In a state where the tubular film (11) is sandwiched, the tubular film (11) is moved downstream with the tubular film (11), and after end sealing is performed between the articles of the tubular film (11), they are separated from each other upstream. A pair of moving seal bodies (20, 21);
A bed (16) provided on the upstream side of the arrangement position of the seal bodies (20, 21), and supporting the article (15) supplied into the cylindrical film (11) from below;
The article (15) supplied into the cylindrical film (11) delivered from the bed (16) on the upstream side in the film transfer direction from the arrangement position of the seal body (20, 21) is used as an article transfer surface. An endless first transfer conveyor (18) provided so as to be placed and transferred and horizontally movable along the film transfer direction;
An endless second transfer conveyor (19) provided on the downstream side in the film transfer direction from the arrangement position of the seal bodies (20, 21) and for transferring a package obtained by end sealing;
The opposite ends of the first transfer conveyor (18) and the second transfer conveyor (19), as well as horizontal movement with the movement intends along the film transport direction of the both sealing bodies (20, 21), a pair of seal body There accompanied the approach movement of the (20, 21), to allow movement to both conveyor above the lower side of the seal member (21) spaced relative to, and spaced a pair of sealing members (20, 21) Along with the movement, interlocking means (53) for relatively approaching the opposite ends of both conveyors (18, 19),
A motor (38) disposed on the second transfer conveyor (19) and driving the transfer conveyor (19);
Rotation transmitting means (39) that allows relative position changes of the opposed ends of the two conveyors (18, 19) and transmits the rotational driving force of the second transfer conveyor (19) to the first transfer conveyor (18). And
When the first transfer conveyor (18) horizontally moves in the film transfer direction upstream with both seal bodies (20, 21), the bed (16) is positioned upstream without changing the length of the article transfer surface. end sealing apparatus of the horizontal-type bag filling machine according to claim <br/> by being configured to move to the lower side of the. Before SL endless belt the downstream end pulley (18b) is wound (18a) of the first transfer conveyor (18), upstream end pulley the endless belt at the second transfer conveyor (19) (19c) is wound ( between 19a), said rotation transmitting means (39) by end sealing apparatus of the horizontal-type bag filling machine constructed according to claim 1 Symbol placement so that rotation is transmitted. Said rotation transmission means (39),
A driven pulley (44) disposed coaxially so as to rotate integrally with a pulley (18a) at a downstream end of the first transfer conveyor (18) ;
A drive pulley (41) disposed coaxially so as to rotate integrally with a pulley (19a) at an upstream end of the second transfer conveyor (19) ;
Endless transmission for movement between the driving pulley (41) and the driven pulley (44) when the opposing end of the first transfer conveyor (18) and the second transfer conveyor (19) are moved apart and close to each other. The horizontal bag making and filling according to claim 2, comprising a plurality of idle pulleys (42, 43, 45) wound around the belt (46) so as to be able to transmit rotation while maintaining a continuous state without slackening. Machine end seal device.

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