JP2001206318A - Horizontal sealing apparatus of horizontal bag making and filling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the high sealing pressure with a simple constitution, to maintain a longer contact period with a predetermined pressure of a sealing body, and to suppress large noises, vibrations, etc., during contact with the sealing body. SOLUTION: A pair of the sealing bodies 15, 16 are slidably disposed on a support frame 36 to be turnably supported via an oscillating shaft. An opening/closing cam 55 and a servo motor 50 are disposed on a drive shaft 48 of the support frame 36. The pair of the sealing bodies 15, 16 are brought close to and separate from each other by a toggle mechanism 46 connected to the cam 55 by rotating the drive shaft 48 and the opening/closing cam 55 by the servo motor 55. The support frame 36 is oscillated by an oscillating means to be operated by the drive of the servo motor 50 so that the pair of the sealing bodies 15, 16 are moved forward/backward in the transferring direction of a cylindrical film 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal sealing device for a horizontal bag making and filling machine, and more particularly, to a pair of seals which move in the transport direction together with the transport of a tubular film and move toward and away from each other. The present invention relates to a horizontal sealing device that seals a cylindrical film by pressing the cylindrical film from both sides.

[0002]

2. Description of the Related Art A horizontal bag making and filling machine sequentially supplies articles to be packaged into a tubular film which is formed into a tubular shape by a bag making machine and which is transported horizontally, and a longitudinal edge of the tubular film. By applying a vertical seal (center seal) to the overlapping surface of the part, and further performing a horizontal seal (end seal) and cutting before and after sandwiching the packaged material of the tubular film, so that a so-called pillow package can be manufactured. Has become.

In a horizontal sealing device for performing horizontal sealing and cutting,
A pair of seals vertically opposed to each other across the transfer path of the tubular film is provided, and the two seals are held in contact with each other in a state where the tubular film is sandwiched. A so-called box-motion type is preferably used, in which a horizontal movement is performed synchronously horizontally to seal, and then retreats away from each other and repeats a horizontal movement again by abutting each other.

Conventionally, as this type of horizontal sealing device, one having a configuration disclosed in Japanese Patent Application Laid-Open No. 9-301325 filed by the present applicant has been proposed. This device is
The upper and lower seals are connected to a drive mechanism including first, second, and third gears provided to mesh with each other in the vertical direction, and a planetary gear mechanism attached to each gear. After the tubular film is sandwiched, it is horizontally moved synchronously along the transport direction of the tubular film to perform sealing, and then moves away from each other, retreats, and moves again to move horizontally. It is configured to repeat.

[0005]

According to the above-mentioned horizontal sealing device, a pair of seals can be moved along a movement locus having a substantially straight contact portion along a film transport path. A good seal is achieved by keeping the clamping pressure when the seal body abuts substantially constant. Further, at the time when the two seals start contacting, the velocity component in the direction in which the seal surfaces face each other is small, and it is possible to preferably suppress the generation of large noise and vibration due to the impact when the two seals contact. Can be appreciated.

However, since the transverse seal device employs a structure related to a plurality of gear mechanisms, the size of the device is increased, the structure is complicated, maintenance is inferior, and the manufacturing cost is relatively high. The difficulty is pointed out.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention has been proposed in order to solve the above-mentioned problems, and it is possible to obtain a high sealing pressure and a contact period of a sealing body at a constant clamping pressure. The present invention aims to provide a horizontal sealing device for a horizontal bag-making and filling machine having a simple structure capable of maintaining the pressure for a longer time and suppressing the generation of loud noise and vibration at the time of the contact of the seal body.

[0008]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and appropriately achieve the intended object, a horizontal sealing device for a horizontal bag making and filling machine according to the present invention comprises a tubular sealing device filled with articles to be packaged. The pair of seals, which are disposed vertically facing each other across the film transfer path, move in the transfer direction along with the transfer of the cylindrical film, and move close to and away from each other, move the cover of the cylindrical film. In a horizontal sealing device of a horizontal bag making and filling machine for sealing before and after sandwiching a package, a support frame in which the pair of seal bodies are slidably disposed, and a drive rotatably supported by the support frame. An opening / closing cam integrally rotatably arranged on a shaft, a toggle mechanism linked to the opening / closing cam for opening and closing the pair of seals, and a toggle mechanism arranged on the support frame to rotationally drive the drive shaft. Drive motor and the front Is actuated by a drive motor, wherein the pair of sealing body is characterized in that it is composed of a swinging means for swinging said supporting frame to move to the transfer direction before and after the tubular film.

[0009]

When the drive shaft provided on the support frame is rotated by the drive motor, a toggle mechanism connected to an opening / closing cam which rotates integrally with the drive shaft is operated, and is slidably provided on the support frame. The pair of seals thus opened and closed. In addition, the swinging means is operated by the driving motor, and the support frame swings so that the pair of seals move back and forth in the transport direction of the tubular film. That is, the pair of seals abut against each other on the upstream side in the film transport direction, move to the downstream side in this abutting state, and then repeat the movement of separating from each other. Hold and seal.
Further, when the height dimension of the packaged object is changed, the height adjustment means adjusts the height position at which the pair of seal members abut, thereby changing the sealing position with respect to the tubular film. Further, when the cut pitch or the packaging speed of the film is changed, it can be dealt with by controlling the speed of a servomotor as a driving motor.

[0010] In the article delivery conveyor provided on the upstream and downstream sides of the position where the seals are disposed, the tip of the conveyor directed toward the seals relatively moves toward and away with the opening and closing operations of the pair of seals. In addition, the opening and closing operation of the seal body is allowed, and reliable delivery of the packaged object is achieved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a horizontal sealing device for a horizontal bag making and filling machine according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments.

FIG. 1 and FIG. 2 show the overall structure of a horizontal sealing device of a horizontal bag making and filling machine according to an embodiment of the present invention, in which a pair of sides separated in a width direction intersecting with a film transport direction. The machine frames 12 are formed by connecting the unit frames 10 and 10 with a plurality of connecting members 11. A first transfer conveyor 13 is disposed on the upstream side (left side in FIG. 1) of the machine frame 12 in the film transfer direction, and the first transfer conveyor 13 and the transfer level are set on the downstream side (right side in FIG. 1). A matched second transfer conveyor 14 is arranged in series. And both conveyors 13 and 14 as an article delivery conveyor
Between the opposing ends of the
(Opening / closing operation) Upper (one) first first seal body 15 and lower side
A lateral sealing device 17 including the (other) second sealing body 16
Is arranged.

Prior to the description of the horizontal sealing device 17, the configuration of the first transfer conveyor 13 and the second transfer conveyor 14 will be briefly described. As shown in FIG. 2, on the upper part of the machine casing 12 on the upstream side of the position where the horizontal seal mechanism 17 is disposed,
A first fixed frame 18 including a pair of side plates separated by a predetermined distance in the width direction is provided. Also, the first fixed frame 18
A first movable frame 19 formed in a U-shape that is open downward from a pair of side plates facing each other and spaced apart from each other in the width direction at an interval smaller than the interval between the side plates.
However, the first fixed frame 18 is disposed so as to be able to move horizontally in the film transfer direction. Further, a plurality of pulleys 20 are rotatably supported on the first fixed frame 18, and a plurality of pulleys 21 are also rotatably supported on the first moving frame 19, between the pulleys 20, 21. First
An endless belt 22 is runably wound around the first transfer conveyor 13. The pulley 20 at a predetermined position provided on the first fixed frame 18 has the frame 1
The first endless belt 22 travels in a required direction by rotating a pulley 20 in the required direction by the motor 23.

The second transfer conveyor 14 is configured symmetrically with the first transfer conveyor 13 with a horizontal sealing device 17 interposed therebetween. That is, a second fixed frame 24 composed of a pair of side plates separated by a predetermined distance in the width direction is disposed above the machine frame 12. A second movable frame formed inside the second fixed frame 24 in a U-shape that is opened downward from the pair of side plates and the upper plate that are spaced apart in the width direction at an interval smaller than the interval between the side plates and open downward from the upper plate. 25 is the second
It is arranged so as to be able to move horizontally in the film transport direction with respect to the fixed frame 24. Further, the second fixed frame 2
4, a plurality of pulleys 26 are pivotally supported so as to be rotatable,
A plurality of pulleys 27 are also pivotally supported on the second moving frame 25, and a second endless belt 28 is wrapped around the pulleys 26, 27 so as to run, and the second transfer conveyor 14 is moved.
Is configured. A second motor 29 disposed below the frame 24 is connected to the pulley 26 at a predetermined position disposed on the second fixed frame 24, and the pulley 26 is rotated in a required direction by the motor 29. Second by
The endless belt 28 runs in a required direction.

In the first transfer conveyor 13, the first endless belt 22 is set so as to run in a required direction at substantially the same speed as the film transfer speed. The cylindrical film 31 filled with
It is transferred to the horizontal sealing device 17. Further, in the second transfer conveyor 14, the second endless belt 28 is set to be faster than the traveling speed of the first endless belt 22,
The preceding package, which has been horizontally sealed and cut by the two sealing bodies 15 and 16 of the horizontal sealing device 17, can be reliably separated from the subsequent unpackaged body and discharged.

A second support member 44 (described later), which is located below a transfer path (film transfer path) of the cylindrical film 31 and horizontally supports the second seal body 16, has a structure shown in FIGS. , A pair of connecting rods 32 as opening and closing means,
33 are pivotally supported at one end. The other end of the upstream first connecting rod 32 is rotatably supported by the first moving frame 19, and the other end of the downstream second connecting rod 33 is connected to the second moving frame 25. It is pivotally supported. That is, in a state where the second seal body 16 is located at the lowest point, the tips of the first moving frame 19 and the second moving frame 25 that direct the seal bodies 15 and 16 are close to each other, and the second seal body 16 is When ascending, the leading ends of the two moving frames 19 and 25 are separated from each other (see FIG. 1) to form a gap that allows the second seal body 16 to rise, and when the second seal body 16 descends from the uppermost point. Are configured so that the tips of both moving frames 19 and 25 move close to each other.

Next, the configuration of the horizontal sealing device 17 will be described. As shown in FIG. 4, a fixed shaft 34 extending in the width direction is disposed below the first transfer conveyor 13 in the machine frame 12, and is separated from the fixed shaft 34 in the axial direction (width direction). A pair of holding members 35, 35 pivotally support one end in the longitudinal direction so as to be rotatable. Between the two holding members 35, 35, the first transfer conveyor 13 and the second transfer conveyor 1 are provided.
4, the supporting frame 36 is provided with a swing support shaft 37,
It is held rotatably via 37. As shown in FIG. 3, the support frame 36 includes a pair of rectangular box frame-shaped support frames 36a, 36a connected by a plurality of connecting members 36b, 36b spaced apart in the width direction and provided between the opposing surfaces thereof.
And a side plate 47 which is disposed on the outer side surface of each support frame 36a and extends downward by a predetermined length.
And the side plate 47 are held by the holding member 35 via the swing support shaft 37, respectively.

Each support frame 36a of the support frame 36
A slide shaft (slide member) 38 having a predetermined length is slidably inserted and supported in a vertical direction, and a pair of slide shafts 38 extending downward from both support frames (support portions) 36a, 36a. The lower end of the first support member 39
Are connected by In addition, a holder 40 is provided between the upper ends of the slide shafts 38, 38 extending upward from the support frames 36a, 36a and facing above the film transfer path so as to be vertically movable. In addition, the first seal body 15 is disposed with the seal surface directed to the transfer path of the tubular film 31. The holder 40 is urged downward by springs 41, 41 as elastic members wound around the slide shafts 38, 38 so as to always contact stoppers 42, 42 provided on the shafts 38, 38. It has become so. And the springs 41, 41
When the first seal body 15 and the second seal body 16 come into contact with each other, the first seal body 15 and the holder 40 are allowed to retreat upward, and the cylindrical film It functions to keep the clamping pressure of 31 substantially constant. Further, a cutter 43 is disposed on the first seal body 15, and is configured to cut the tubular film 31 when the first seal body 15 comes into contact with the second seal body 16.

Between the support frame 36 and the holder 40, a second support member 44 parallel to the holder 40 can move up and down on the slide shafts 38, 38 (relative to the first support member 39). (Can be moved close to or away from). On the upper surface of the second support member 44, a second seal member 15 is opposed to the first seal member 15 in parallel with the film transfer path therebetween.
A seal body 16 is provided with its sealing surface directed to the film transport path. Then, by operating a swinging means 45 described later, the pair of seals 15, 1
6 swings back and forth in the film transport direction, and operates a toggle mechanism 46 described later, whereby the upper and lower seal members 15 and 16 move toward and away from each other, and sandwich the tubular film 31 when approaching. The film 3
1 is configured to perform a horizontal seal under a predetermined pressure.

The pair of side plates 47, which are disposed on both sides in the width direction of the support frame 36 and extend downward by a predetermined length,
As shown in FIG. 3, a drive shaft 48 is rotatably provided between lower ends of 47. One (right side in FIG. 3) side plate 47
Is provided with a servomotor 50 as a drive motor via a bracket 49, and a drive gear 51 provided on an output shaft of the motor 50 meshes with a driven gear 52 provided on the drive shaft 48. (See FIG. 4). Also, both side plates 47,
47, a shaft 53 parallel to the drive shaft 48 is provided, and the cam lever 5 rotatably supported by the shaft 53 is provided.
A follower 54a disposed at one end of the cam 4 is engaged with a cam groove 55a formed in an opening / closing cam 55 disposed so as to rotate integrally with the drive shaft 48.

A link shaft 56 is provided between the pair of support frames 36a, 36a of the support frame 36, and a link member 57 is pivotally supported by the link shaft 56. At the lower end (one end) of the link member 57, the other end of the first connecting rod 58 whose one end is rotatably supported on the upper surface of the first support member 39 is rotatably supported. The other end of a second connecting rod 59 pivotally supported on the lower end of the second support member 44 at the upper end (the other end) of the link member 57. Supported. Further, the vicinity of the pivot position of the first connecting rod 58 in the link member 57
One end of the link rod 60 is rotatably supported at (a position deviated from the pivot portion of the link member 57), and the other end of the cam lever 54 is attached to the other end of the link rod 60. It is pivotally connected (connected) so that it can rotate. That is, by rotating the drive shaft 48 by the rotational drive of the servo motor 50, the follower 54 is inserted into the cam groove 55 a of the opening / closing cam 55.
The cam lever 54 that engages through the lever a swings, and the link member 57 swings through the link rod 60 on which the other end of the lever 54 is pivotally supported. Thereby, the first member connected to the link member 57 via the first and second connecting rods 58 and 59 is formed.
The support member 39 and the second support member 44 move toward and away from each other, and as a result, the upper and lower seal bodies 15 and 16 move toward and away from each other. The toggle mechanism 46 includes the link member 57, the first connecting rod 58, the second connecting rod 59, and the link rod 60. The cam groove 55a is provided with a toggle mechanism 46 such that the first seal body 15 and the second seal body 16 are moved closer to each other at the timing of moving to the most upstream side and separated from each other at the timing of moving to the most downstream side. The cam is set to operate.

As shown in FIG. 3 and FIG.
A pivoting rotary plate 61 is disposed so as to rotate integrally with each of the shaft ends protruding outward from the respective side plates 47 of FIG. 8, and one end in the longitudinal direction is provided at an eccentric position of each pivotal rotary plate 61. The other end of a swing lever 62 pivotally supported by the machine frame 12 is pivotably supported. When the drive shaft 48 is rotated by the rotation drive of the servo motor 50,
The pair of swinging rotary plates 61, 61 rotate integrally with the drive shaft 48, and the support frame 36 swings about the swing support shafts 37, 37 by the crank motion of the pair of swinging levers 62, 62. The pair of seals 15, 16 are configured to swing back and forth in the film transport direction. Note that the swinging rotating plates 61, 61 and the swinging levers 62, 62
The oscillating means 45 is constituted by.

That is, in the embodiment, when the drive shaft 48 is rotated by the servo motor 50, the rocking means 45 and the toggle mechanism 46 operate, and the first seal body 15 and the second seal body 16 They contact each other close to each other on the upstream side in the transport direction, move to the downstream side in this contact state, and then repeat the movement of separating from each other (see FIG. 5). The moving speed of the seal members 15 and 16 in the film transfer direction in the contact state is set so that the rotation of the servomotor 50 is controlled at substantially the same speed as the film transfer speed.
Further, the servomotor 50 changes the speed according to the film cutting pitch set in accordance with the size of the packaged object 30, the transfer speed of the tubular film 31 obtained from the desired packaging speed, and the set packaging speed. It is set to be controllable.

Between the free ends of the holding members 35, 35 opposite to the pivot end with respect to the machine frame 12 with the holding portion of the support frame 36 interposed therebetween (portion separated from the pivot end), a support is provided. A member 63 is rotatably disposed, and a support rod 64 parallel to the member 63 is rotatably provided between the two side frames 10, 10 of the machine frame 12 facing below the member 63. Have been. An adjusting screw 65 extending vertically is rotatably disposed at the center of the support rod 64 in the mounting direction, and the adjusting screw 65 is formed in a female screw hole 6 formed at a corresponding position of the support member 63.
6 is screwed. An adjusting operation handle 67 is provided at a lower end of the adjusting screw 65. By rotating the handle 67 in the forward and reverse directions, the adjusting screw 65 and the female screw hole 6 are formed.
6, a pair of holding members 35, 35 swing vertically about the fixed shaft 34 as a fulcrum under the screwing action of the adjusting screw means comprising the pair of seal members 15, 1.
The height position of the abutment 6 can be adjusted. The holding members 35, 35, the support member 63, the female screw hole 66 and the adjusting screw 65 constitute a height adjusting means 68.

[0025]

Next, the operation of the horizontal sealing device of the horizontal bag making and filling machine according to the embodiment will be described. The seals 15 of the first moving frame 19 of the first transfer conveyor 13 and the second moving frame 25 of the second transfer conveyor 14, respectively.
In the horizontal seal device 17, the first seal body 15 and the second seal body 16 are separated from each other and allowed to pass through the cylindrical film 31, while the leading ends directed toward the cylinder 16 are close to each other. Shall be

The cylindrical film 31 filled with the articles 30 placed on the first transfer conveyor 13 is transferred downstream by the first endless belt 22 running at substantially the same speed as the film transfer speed. . In the horizontal sealing device 17, the oscillating means 45 and the toggle mechanism 46 are operated at required timing by the servo motor 50, and the first sealing body 15 and the second
After moving to the upstream side, the seal body 16 comes close to each other. That is, the drive shaft 48 is rotated by the servomotor 50, and the swing rotary plates 61, 6 that rotate integrally therewith.
1 by the crank motion of the swing levers 62, 62 connected to the support frame 1, the support frame 36 is moved to the swing support shafts 37, 37.
And the first seal member 15 and the second seal member 16 move to the upstream side. In FIG. 1, at the timing when the support frame 36 swings most in the counterclockwise direction, the link member 57 is linked with the swing of the cam lever 54 that engages with the opening / closing cam 55 that rotates integrally with the drive shaft 48. The first seal member 15 swings about the shaft 56 and the first support member 39 connected via the first connecting rod 58 is lowered with respect to the support frame 36, and the first seal member 15 is lowered. As the second support member 44 connected via the connecting rod 59 is raised with respect to the support frame 36, the second seal body 16 is raised. Thus, the first seal body 15 and the second seal body 16 come into contact with the tubular film 31 interposed therebetween. In addition, the moving frames 19 and 25 of the first and second transfer conveyors 13 and 14 move away from each other in conjunction with the movement of the second support member 44, so that the second seal body 16 extends upward. Define an acceptable gap.

The two seals 15 and 16 are higher and more constant because the link member 57 of the toggle mechanism 46, the first connecting rod 58 and the second connecting rod 59 are aligned in a straight line as shown in FIG. The cylindrical film 31 is moved downstream at substantially the same speed with the transfer of the cylindrical film 31 in a state of being in contact with the sealing pressure (clamping pressure), whereby the film 31 is securely sealed. When the two seals 15 and 16 come into contact with each other, the first seal 15 retreats upward together with the holder 40 against the elasticity of the springs 41 and 41, and the first
It moves in a state of being pressed against the second seal body 16 by the elasticity of 1,41. In this case, the horizontal seal device 17 moves to the downstream side by swinging in a state where the two seal bodies 15 and 16 are in contact with each other on the upstream side.
It is possible to prevent the occurrence of a defective seal due to a change in the squeezing pressure due to 5, 16. Further, the opening and closing movement of the two seals 15, 16 is operated by the cam action of the opening and closing cam 55, and the swing thereof is operated by the servomotor 50, so that the contact time between the two seals 15, 16 is extended. At the same time, when the seal members 15 and 16 are in contact with each other, the seal members 15 and 16 can be operated so as to make contact at a speed that can suppress the collision sound. In addition, the cutter 43 is operated in a state where the two seals 15 and 16 are in contact with each other, and the tubular film 31 is cut.

As a result of the opening / closing cam 55 and the swinging rotating plates 61, 61 further rotating in the required direction together with the drive shaft 48, the tubular film 31 is pressed while being pressed by the action of the swinging means 45 and the toggle mechanism 46. The first seal member 15 and the second seal member 16 that have moved to the downstream side are separated from each other to release the cylindrical film 31 (see FIG. 5). The package obtained by performing the horizontal sealing and cutting by the horizontal sealing device 17 is quickly transferred from the arrangement position of the horizontal sealing device 17 to the downstream side by the second transfer conveyor 14 that is operated at a high speed. . In addition, since the moving frames 19 and 25 come close to each other in conjunction with the lowering of the second seal body 16, the moving frames 19 and 25 move from the first transfer conveyor 13 of the next packaged object 30 to the second
Delivery to the transfer conveyor 14 is performed smoothly.

The packaged object 30 may be changed by changing the order.
When the height dimension of the adjusting screw 65 is changed, the adjusting operation handle 67 is rotated in a required direction so that the pair of holding members 35, 35 are fixed under the screwing action of the adjusting screw 65 and the female screw hole 66. It swings up and down with the fulcrum 34 as a fulcrum, so that the height position where the two seal bodies 15 and 16 abut can be set and adjusted to the middle position in the height direction of the packaged object 30. Therefore, the horizontal sealing position of the film with respect to the packaged object 30 can always be set at the middle of the height direction. Further, when the product type or the packaging speed is changed, the set value of the control data of the servomotor 50 can be changed.

[0030]

[Modification] In the embodiment, the height adjusting means for adjusting the height position at which the pair of seal members contact each other is adjusted by swinging the holding member. It may be configured to move up and down in the vertical direction. Further, the swinging means of the seal body has been described as a configuration in which the swinging lever connected to the swinging rotating plate is cranked, but the present invention is not limited to this, and various configurations for swinging can be adopted. Further, the opening / closing cam for operating the toggle mechanism is not limited to the front cam having the cam groove provided on the side surface of the rotating plate as in the embodiment, but may be various cams such as a plate cam and a cylindrical cam. Further, the support frame is not limited to the configuration of the embodiment, and may have another configuration such as a U-shaped frame that opens downward.

[0031]

As described above, according to the horizontal sealing device of the horizontal bag making and filling machine according to the first aspect of the present invention, a pair of seals are moved in the film transport direction without using a plurality of gear mechanisms. A swing mechanism and a toggle mechanism for opening and closing
Since the apparatus is configured to operate with the base drive motor, the configuration of the apparatus itself can be simplified, the manufacturing cost can be reduced, and the maintainability is improved. Further, since the pair of seals are opened and closed by the toggle mechanism, a high sealing pressure can be obtained, and the opening and closing operation by the opening and closing cams and the swinging motion of the support frame by which the seals are supported by the driving motor. The mutual operation makes it possible to maintain a longer period in which the seal body is in contact with a fixed squeezing force, to increase the seal strength, and to manufacture a package body having a more attractive seal portion. Further, generation of loud noise or vibration caused by an impact when the two seals come into contact with each other can be suitably suppressed.

According to the second aspect of the present invention, since the height adjusting means for adjusting the height position at which the pair of seal bodies abut is provided, the contact height position of the seal bodies is adjusted according to the height of the article to be packaged. Can be changed and adjusted, and the setting can be adjusted according to various kinds of packaged objects. Further, in the invention according to claim 6, since the article delivery conveyor arranged on the upstream and downstream sides of the arrangement position of the seal body is configured to move close to and away from the opening and closing operation of the pair of seal bodies, the horizontal sealing device is provided. Can reliably achieve the delivery of the packaged item passing through the arrangement position of the package. In the invention according to claim 7, by adopting a servomotor capable of speed change control as the drive motor, when changing the product type or changing the packaging speed, it is only necessary to change the set value of the corresponding control data. Can respond.

[Brief description of the drawings]

FIG. 1 is a front view showing a horizontal sealing device according to a preferred embodiment of the present invention in a partially broken state.

FIG. 2 is a plan view showing the horizontal sealing device according to the embodiment in a partially broken state.

FIG. 3 is a side view showing the horizontal sealing device according to the embodiment in a partially broken state.

FIG. 4 is a main part plan view showing the horizontal sealing device according to the embodiment in a partially broken state.

FIG. 5 is an explanatory diagram showing an operation of a pair of seal bodies.

[Explanation of symbols]

 12 Machine Frame 13 First Transfer Conveyor (Article Transfer Conveyor) 14 Second Transfer Conveyor (Article Transfer Conveyor) 15 First Sealed Body (One Sealed Body) 16 Second Sealed Body (Other Sealed Body) 30 Packaged Article 31 Cylindrical film 32 First connecting rod (opening / closing means) 33 Second connecting rod (opening / closing means) 35 Holding member 36 Support frame 36a Support frame (supporting portion) 37 Swing support shaft 38 Slide shaft (slide member) 39 First support Member 40 Holder 41 Spring (elastic member) 44 Second support member 45 Swing means 46 Toggle mechanism 48 Drive shaft 50 Servo motor (drive motor) 55 Opening / closing cam 57 Link member 58 First connecting rod 59 Second connecting rod 60 Link rod 61 Rotating rotating plate 62 Rotating lever 65 Adjusting screw (adjusting screw means) 66 Female screw hole (adjusting screw means) 67 Adjusting operation handle 68 Height adjusting hand

Claims (7)

[Claims] 1. A tubular film filled with an article to be packaged (30).
(31), a pair of seal bodies (15, 15) that are arranged vertically opposite to each other across the transfer path, move in the transfer direction along with the transfer of the tubular film (31), and move close to and away from each other. 16)
Thus, in the horizontal sealing device of the horizontal bag making and filling machine for sealing before and after sandwiching the packaged object (30) of the cylindrical film (31), the pair of seals (15, 16) are slidably arranged. A support frame (36) provided, and a drive shaft (48) pivotally supported on the support frame (36).
An opening / closing cam (55) arranged so as to be integrally rotatable with the opening / closing cam (55), and the pair of sealing bodies (1
A toggle mechanism (46) for opening and closing the drive shaft (48), a drive motor (50) disposed on the support frame (36), for rotating the drive shaft (48), and a drive motor (50). Oscillating means (45) for operating the support frame (36) so that the pair of seals (15, 16) move back and forth in the transport direction of the tubular film (31).
And a horizontal sealing device for a horizontal bag making and filling machine. 2. A pair of seals (15, 16) are held up and down by holding a swing support shaft (37, 37) provided on the support frame (36), and the pair of seals (15, 16) are formed into a tubular film (31). 2. The horizontal sealing device for a horizontal bag making and filling machine according to claim 1, further comprising a height adjusting means (68) for adjusting a height position at which the abutment is abutted. 3. The swinging means (45) includes a swinging rotating plate (61, 61) which is arranged so as to be integrally rotatable with the drive shaft (48), and the swinging rotating plate (61, 61). A swing lever (62, 62) pivotally supported at one end at the eccentric position and pivotally supported at the other end on the machine frame (12). 3. A horizontal sealing device for a horizontal bag making and filling machine according to 2. 4. The height adjusting means (68) rotatably holds the swing support shafts (37, 37) of the support frame (36), and one end of the support shaft (36) rotates on the machine frame (12). A pivotally supported holding member (3
Adjustment screw means (65, 6) disposed at a position of the holding member (35, 35) separated from the pivotal end of the machine frame (12).
4. The horizontal sealing device for a horizontal bag making and filling machine according to claim 2, which comprises: 5. A first support member (39) is connected to one end of a link member (57) pivotally supported by the support frame (36) via a first connection rod (58). At the other end of the link member (57), a second support member (44) that can move relatively close to and away from the first support member (39) is provided on the second connecting rod (5).
9), and the one seal body (15) directs the sealing surface of the holder (40), which is vertically movable with respect to the first support member (39), toward the transfer path. And the second
The other sealing body (16) is provided on the support member (44) with the sealing surface facing the sealing surface of the one sealing body (15) facing the transfer path. 36) and the drive shaft (4
The cam lever (5) with one end engaged with the opening / closing cam (55) of (8)
4) is rotatably supported by the support frame (36), and the other end of the cam lever (54) is displaced from the pivot of the link member (57). ), And when the pair of seals (15, 16) are in contact, one seal (15) is displaced with respect to the other seal (16), so that a substantially constant clamping pressure is always obtained. So that the holder (40) is urged by an elastic member (44, 44).
5. The horizontal sealing device of the horizontal bag making and filling machine according to any one of 4. 6. An article delivery conveyor (13, 14) is provided on each of the upstream and downstream sides of an arrangement position of the seal body (15, 16),
With the opening and closing operation of the pair of seals (15, 16), the seals (1
The horizontal sealing device of a horizontal bag-making and filling machine according to any one of claims 1 to 5, further comprising an opening / closing means (32, 33) in which the tip of the conveyor directed to (5, 16) moves relatively close to and away from the conveyor. 7. The driving motor (50) is a servomotor, and is set so as to be able to control a shift according to a change in a film cut pitch or a packaging speed corresponding to the size of the packaged object (30). Item 7. A horizontal sealing device for a horizontal bag making and filling machine according to any one of Items 1 to 6.