JPH02258513A - Lateral sealing device - Google Patents

Abstract

PURPOSE:To perform an assured lateral sealing by a method wherein after an outside gripping measure is moved from the open position to an intermediate position by a first operating measure, which is an approximately parallel position with the gripping part of an inside gripping measure while rotating the gripping part of the outside gripping measure, the both parts are pressure-welded while keeping the parallel condition. CONSTITUTION:When a sealing measure 31 is moved to a first intermediate position by displacing an opening/closing rod 15 which constitutes a first operating measure 12A in the axial direction, a rotary boss 14 which constitutes a second operating measure 12B is located at a rotating position at which the sealing measure 31 is most distant from a sealing block 11, i.e., at a position to be a first intermediate position. After a gripping part 31a of the sealing measure 31 has reached the first intermediate position at which the gripping part 31a becomes parallel with a gripping part 11a of the sealing block 11, the sealing measure 31 is moved to a second intermediate position which is closer to the sealing block 11 following the cam curve of a cam member 21. Then, while keeping the parallel condition of both gripping parts 31a, 11a, the both parts are mutually pressure-welded, and thus defective sealing caused by the distortion of the lateral sealed part due to extrusion of the tube can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention provides horizontal sealing in a direction crossing the longitudinal direction of a tube body filled with a filler, and seals the filler between adjacent horizontal seal parts. This invention relates to a horizontal sealing device for sealing.

"Conventional technology" Conventionally, as a horizontal seal device, a rotary body that is rotationally driven,
a gripping mechanism provided at a plurality of locations on the outer periphery of the rotating body and having an inner gripping means located on the inside in the radial direction of the rotating body and an outside gripping means located on the outside;
a drive mechanism for moving the gripping part provided on the inner gripping means between a closed position where it is pressed by a gripping part provided on the inner gripping means and an open position where the gripping part is laterally removed from the outside of the inner gripping means; sealing means for horizontally sealing the tube body gripped by the inner gripping means; supplying the tube body filled with a filler inside to the inner gripping means in the open position of the outer gripping means; It is known that the tube body is gripped by a gripping portion of the tube body and a gripping portion of an outer gripping means that is pressed toward the gripping portion to apply a lateral seal to the tube body in a direction intersecting the conveyance direction (Japanese Patent Application Laid-Open No. (Sho 61-47312).

"Problems to be Solved by the Invention" However, according to the above-mentioned conventional horizontal sealing device,
When the outer gripping means is moved from the open position to the closed position to grip the tube body, the gripping part of the outer gripping means rotates in contact with the gripping part of the inner gripping means, that is, both gripping parts The two grips do not contact each other while remaining parallel, but the two grips come into contact with the distance narrowing from one side to the other, so when gripping, the tube body should be pushed out toward the open side of both grips. This means that you have to hold it by hand.

As a result, the gripping part of the tube body is likely to become misaligned or wrinkled.
There was a risk that the horizontal seal would be incomplete.

"Means for Solving the Problem" In view of such circumstances, the present invention provides a drive mechanism for the horizontal sealing device such that the outer gripping means is in the open position and the gripping portion of the outer gripping means is in the open position. a first driving means for moving the outer gripping means between an intermediate position spaced apart from the gripping part by a predetermined distance and substantially parallel to each other; and a first driving means for moving the outer gripping means between the intermediate position and the closed position so that both gripping parts are in a parallel state. and a second driving means for moving the object while maintaining the same.

"Operation" According to the above configuration, the first driving means moves the outer gripping means from the open position to the intermediate position, while rotating the gripping part with respect to the gripping part of the inner gripping means, to a substantially parallel position. Later, the second driving means can maintain the parallel state of both grips and bring them into pressure contact, so the tube body is not pushed out to the open side of both grips as in the conventional case, and therefore a stable state is maintained. This makes it possible to grip the tube body and perform a reliable lateral seal.

``Example'' The present invention will be described below with reference to the illustrated example. In FIG. The sheets are formed into a tube body 2 by having both side edges overlapped with each other and hot-melted by a vertical sealing device 1 .

The tube body 2 is conveyed vertically from above to below, and the filling liquid injection vibrator 3 is inserted into the tube body 2 just before the strip sheet is formed into the tube body 2. , the filling liquid is filled into the tube body 2 by the injection vibrator 3. Note that the filler is not limited to a filler liquid, and may be powder, granules, or the like.

The tube body 2 filled with the above-mentioned filling liquid has a horizontal sealing device 4
The filling liquid is introduced into the tank and is heated and welded in a direction perpendicular to the longitudinal direction by the horizontal sealing device 4 in a direction perpendicular to the longitudinal direction to sequentially seal the filling liquid horizontally. A sealed container 5A is formed.

The horizontal sealing device 4 is equipped with a rotating body 6 that rotates in a vertical plane, and a large number of gripping mechanisms 7 provided on the outer circumference of the σ rotating body 6 at equal distances from each other. An inner gripping means 8 is provided inside the rotating body 6 in the radial direction, and an outer gripping means 9 is provided outside each inner gripping means 8 so as to be openable and closable.

Then, the tube body 2 is supplied to the outside of the inner gripping means 8 from vertically above with the outer gripping means 9 opened to the negative side in the axial direction of the rotating body 6, and then the outer gripping means 9 is moved to the outside of the tube body 2. By closing the tubular body 2 so as to cover it, the inner gripping means 8 and the outer gripping means 9 mold the tube body 2 into a desired shape and clamp the tube body 2 by a predetermined value in a direction perpendicular to the longitudinal direction. In this state, by heating and welding the gripping portion of the tube body 2 and applying a lateral seal to the tube body 2, as shown in FIGS. 2a and MZb, -
A container 5A containing a filling liquid is formed between the rows of horizontal seals 5a.

The mutually continuous containers 5A formed by the horizontal sealing device 4 are then cut at the center of each horizontal seal portion 5a by the cutting snowmaking 100 and separated into individual containers 5B. The cutting snow making 100 includes a rotating body 101 which is disposed diagonally above and close to a rotating body 6 constituting the horizontal sealing device 4, and which rotates in a vertical plane in synchronization with the rotating body 6. A rotary cutter 102 is provided above a rotating body 101 and rotates synchronously.

Rod-shaped support blocks 103 are attached parallel to the axial direction at equal intervals on the outer peripheral surface of the rotating body 101, and adjacent support blocks 103 are formed as pockets 104 for accommodating the containers 5A or 5B.

The continuous containers 5A delivered from the horizontal sealing device N4 to the cutting snow making 100 are each housed in the pocket 104, and the horizontal sealing portion 5a between the containers 5A
is placed on each support block 103, and by the inclined surface on the rear side in the rotational direction of each support block 103, the mouth part 5b ( 2a and 2b) are supported and positioned.

In this state, the horizontal seal portion 5a is cut from the central portion by the rotary cutter 102, and the continuous container 5A is separated into individual containers 5B. Molded N300
is supplied to

The rotating body 101 of the cutting bag N100 (the container 5B thus transported has horizontal seals 5a at both ends of the rotating body 101).
01 in the circumferential direction, and the longitudinal direction of the horizontal seal portion 5a is parallel to the axial direction of the rotating body 101,
The above-mentioned direction change N200 includes the horizontal seal portion 5a of the container 5B.
are located inside and outside of the rotating body 301 in the radial direction of the rotating body 301 (manufactured by Container Molding), and the longitudinal direction of the transverse seal portion 5a is the rotating body 301
The container 5B is parallel to the axial direction of the container 5B so that it can be sequentially delivered to the rotating body 301 of the container forming apparatus 300.

The direction changing device 200 has a rotating body 1 with cutting bags=100.
A rotary body 201 is provided on the side of the rotary body +01 in a slightly obliquely upward position and close to the rotary body 201, and the rotary body 201 rotates in a vertical plane in synchronization with the rotary body +01.

The outer peripheral portion τ of the rotating body 201 is provided with holding means 202 at equal intervals in the circumferential direction, and the holding means 202
While holding the radial outer peripheral surface of the container 5B conveyed by the rotating body 101 by suction and orienting the suction-held container 5B in a predetermined direction, the container 5B is transferred to the rotating body of the container forming apparatus 300 in the above-described relationship. 301.

The rotating body 301 of the N300 manufactured by Container Molding is configured to rotate in a vertical plane in synchronization with the rotating body 201 of the direction change N200, and the above-mentioned direction changing From the device 200, the horizontal seal portions 5a are located inside and outside the rotating body 301 in the radial direction, and the horizontal seal portions 5a
A housing section 302 is provided for housing the container 5B to be supplied so that the longitudinal direction thereof is parallel to the axial direction of the rotating body 301.

Above the rotating body 301, there is provided a rotating body 304 of the press molding mechanism 303 which rotates in synchronization with the rotating body 301, and the radial outer surface of the container 5B accommodated in the accommodating portion 302 corresponds to the radius of the container 5B. The rotating body 3 is supported in a rectangular manner on the inner surface in the direction, the front and rear surfaces in the conveyance direction, and both side surfaces in the conveyance direction.
04 is pressed inward in the radial direction, thereby forming a rectangular shape.

At this time, as shown in FIG. 2c, the flap portion 5d that is adhered to the container main body 5G of the completed eight container 5c protrudes approximately in the axial direction of the rotating body 301 on both the inside and outside of the container 5B in the radial direction. It becomes like this.

An arcuate fixed guide 306 is provided on the outer periphery of the rotary body 301 over a range from a position beyond the press forming mechanism 303 to a position below the rotary body 301, and the inner circumferential surface of the fixed guide 306 This supports the outer surface of the container 5B, which is press-molded into a rectangular shape, so that its shape can be maintained.

When the outer surface of the container 5B is supported by the fixed guide 306, the support on both side surfaces of the container 5B in the transport direction is released, and the adhesive surfaces of the inner and outer flaps 5d are heated and attached to the container body 5C. mW and container 5C
is completed. And the container 5 completed in this way
C is guided by the fixed guide 306 and gradually discharged from the storage section 302, and then discharged onto a discharge conveyor 307 provided below the rotating body 301.

However, to explain the configuration of the horizontal seal device M4 in detail, as shown in FIG.
is equipped with a cylindrical portion 6a and a flange portion 6b extending radially outward from one end of the cylindrical portion 6a, and is provided with equally spaced portions in the circumferential direction on the outer peripheral surface of the cylindrical portion 6a. A large number of gripping mechanisms 7 as described above are provided.

The inner gripping means 8 constituting the gripping mechanism 7 includes a fixed block 10 fixed to the outer peripheral surface of the cylindrical portion 6a, and a fixed block 10 disposed at a predetermined position of the fixed block IO in parallel with the axial direction of the rotating body 6. A fixed rectangular seal block 11 is provided, and a grip portion 11 on the surface of the seal block 11 is provided.
a can support the radially inner portion of the horizontal seal portion 5a.

On the other hand, the outer gripping means 9 constituting the gripping mechanism 7
The receiver is successively opened and closed by the first drive means 12A, the second drive means 128, and the third drive means 12G.

The first drive means +2A has an open position where the outer gripping means 9 is spaced apart from the inner gripping means 8, and a gripping portion 31a of the outer gripping means 9 is spaced apart from the gripping portion 11a of the inner gripping means 8 by a predetermined distance. The second driving means 128 moves the outer gripping means 9 between the first intermediate position and the first intermediate position that are substantially parallel to each other, and the second driving means 128 is configured to move the outer gripping means 9 between the first intermediate position and the gripping portions 31a and Ila in a parallel state. Roughly, the third driving means 12C moves the outer gripping means 9 between the second intermediate position and the closed stirrup position where both the gripping parts 31a and lla are pressed against each other. It is designed to be moved between .

The first driving means +2A or the second driving means +2B is
As shown in FIGS. 3 to 5, the flange portion 6b
A cylindrical fixed post 13 is arranged and fixed in parallel with the axial direction of the rotating body 6, a rotary boss 14 is rotatably supported inside the fixed boss 13, and a rotary post 14 is slidable inside the rotary post 14. The opening/closing rod 15 is provided with a freely fitted opening/closing rod 15.

The rotary boss 14 has an elongated hole 14a formed along its circumferential direction on its outer circumference, and an axially extending elongated groove 15a formed on its outer circumference. Then, the tip of the regulation bottle 16 attached to the fixed boss 13 is passed through the long hole 14a of the rotary post 14, and the long groove 15 is inserted into the long groove 15.
It is engaged with a.

Therefore, the rotary boss 14 has an elongated hole 14a in the circumferential direction.
The opening/closing rod 15 can rotate relative to the regulation bin 16 and the fixed boss 13 within the range of the regulation bin 16.
It is possible to move forward and backward in the axial direction while rotation is prevented by engagement with the long groove 15a.

The rotary boss 14 constitutes a part of the second drive means 128, and is urged to rotate in one direction by a return spring 18 loaded between the rotary boss 14 and the fixed boss 13, and the cam lever is attached to the rotary boss 14. The cam follower 20 attached through the cam follower 19 is elastically engaged with the inner circumferential cam surface of the ring-shaped cam member 21, so that the rotary boss 14 can be reciprocated in accordance with the cam curve. The ring-shaped cam member 21 is arranged and fixed to the frame 22 so that the center of rotation of the rotating body 6 is approximately the center.

On the other hand, the opening/closing rod 15 constitutes a part of the first driving means +2A, and a cam follower 24 is also attached to the end thereof via a cam lever 23.
is held in the cam groove 25a formed on the outer peripheral surface of the cylindrical cam member 25 identified in the frame 22, and the cam groove 2
The opening/closing rod 15 can be moved forward and backward in the axial direction according to the cam curve 5a.

As roughly shown in FIGS. 4 and 5, the rotating boss 14
The opening/closing rod 15 has a rotating shaft 28 which is disposed approximately in the circumferential direction of the rotating body 6 and is orthogonal to the axial direction thereof. It is made to mesh with a rack +5b formed at the tip of. This rack +5b is formed over the entire circumferential direction of the opening/closing rod 15, so that when the rotary boss 14 rotates with respect to the opening/closing rod 15, the engagement between the nion 29 and the rack +5b does not come off. ing.

A rectangular movable block 30 is attached to the other end of the rotating shaft 28, and a sealing means 31 such as a heater for applying a lateral seal to the tube body 2 is attached to the movable block 30. A heater wiring 33 is connected to this sealing means 31 via a conductive port 32, and a cooling water vibrator 35 having flexibility is connected to a cooling water passage 34 provided in the sealing means 31. . Note that as the sealing means 31, in addition to a heater, a high frequency heating means, a laser device M, etc. can be used.

Therefore, by moving the opening/closing rod 15 constituting the first drive means +2A back and forth in the axial direction using the cam groove 25a of the cam member 25, the rotating shaft 28 is rotated via the rack +5b and the pinion 29, and thereby The movable block 30 and the sealing means 31 attached to the rotating shaft 28 are arranged in such a manner that the gripping part 31a of the sealing means 31 is parallel to the gripping part 11a of the sealing block 11 of the inner gripping means 8 with a predetermined distance therebetween. It can be moved between a first intermediate position and an open position spaced radially outward of the rotating body 6 on one side of the seal block 11.

With the movable block 30 and the sealing means 31 in the open position, the tube body 2 can be carried between the sealing means 31 and the sealing block 11.

Further, the opening/closing rod 1 constituting the first driving means +2A is
5 in the axial direction to move the sealing means 31 to the first intermediate position:
When the rotary boss 14 constituting the second drive means 12B is moved, the seal means 31 is moved to the seal block 11
, i.e., at the rotational position most distant from the first
The sealing means 31 is located at an intermediate position.
After reaching the first intermediate position where the gripping part 31a of the sealing block 11 is parallel to the gripping part 11a of the sealing block 11, the sealing means 31 is moved closer to the sealing block 11 according to the cam curve of the cam member 21 at the second intermediate position. It is designed to move to an intermediate position.

However, in this second intermediate lightning, the gripping part 31a of the sealing means 31 is not pressed against the gripping part 11a of the seal block 11, so the horizontal sealing part 5a is not applied to the tube body 2, and the tube body The front and back portions of the portions 2 where the horizontal seal portions 5a are applied are in communication with each other.

Furthermore, the rotary boss 1 constituting the second driving means 12B
The sealing means 31, which has been positioned at the second intermediate position by the rotation of step 4, is moved by the third driving means +2G while maintaining the parallel state, and is positioned at the closed position.

As shown in FIGS. 5 and 6, the third driving means 12G includes a pair of engaging claws 40 attached to the seal block 11 on both sides of the sealing means 31 toward the inner gripping means 8,
The fixed block 10 of the inner gripping means 8 is provided with a pair of clamp arms 41, and each clamp arm 41 is engaged with each engaging claw 40 to close the fixed block 1.
By pulling it toward the 0 side, the sealing means 31 can be pressed against the sealing block 11.

The pair of clamp arms 41 are rotatably supported on eccentric portions 42a provided eccentrically from the center of rotation at both ends of a drive shaft 42 supported on the fixed block 10. is biased counterclockwise in FIG. 6 by a tension spring 44 stretched between the respective bins 43 and the fixed block 10, and comes into elastic contact with the regulating bin 45 provided on the fixed block 10. .

The contact surface of each of the clamp arms 41 with the regulation bottle 45 is formed as a cam surface 41a, and as the eccentric portion 42a rotates clockwise from the position shown in FIG. 6, the clamp arm 41 is clamped by the cam surface 41a. Tip engaging portion 4 of arm 41
Move To from the disengaged position with the engagement claw 40 to the engagement position where it engages with the engagement claw 40, and move the engagement claw 4o toward the fixed block IO side while roughly engaging with the engagement claw 40. It is now possible to pull.

The drive shaft 42 provided with the eccentric portion 42a is reciprocated by a pair of cylinder units W46 (see FIG. 3), and each cylinder unit M46 is connected to a fixed block 10 as shown in FIG. A cylinder 47 provided in
A rack 48 is provided on the outer peripheral surface of each piston 48.
a@ It is meshed with a gear 42b that is integrally formed at the axial center portion of the drive shaft 42.

Therefore, each of the above cylinder equipment =
By supplying and discharging pressure fluid to and from 46 to cause the piston 48 to reciprocate, the drive shaft 42 can be reciprocated via the rack 48a and gear 42b, thereby rotating the eccentric portion 42a and clamping. Arm 41v! It can be actuated to move the sealing means 31 in the second intermediate position to the closed position in which it is pressed against the sealing block 11 as described above.

In this way, the sealing means 31 is moved from the open position to the first intermediate position 1, and the gripping part 31a of the sealing means 31 and the gripping part 11a of the seal block 11 are arranged in parallel,
Further, while maintaining the parallel state of both gripping parts 31a and Ila, both gripping parts 3 are connected from the first intermediate position through the second intermediate position.
]a and Ila are moved to the closed position where they are pressed against each other, the sealing means 31 is directly rotated from the open position to the closed position! 171, like the conventional device,
The tube body 2 is not extruded from between the sealing means 31 and the seal block 11 in the axial direction of the rotating body 6, thus preventing seal failure due to distortion of the lateral seal portion due to extrusion of the tube body 2. I can do it.

Note that, if necessary, it is also possible to omit either the second driving means 12B or the third driving means 12C.

Next, as shown in FIGS. 6 to 8, each of the fixing blocks 10 of the inner gripping means 8 has a pair of fixing blocks 10 located on both sides of the seal block 11 and close to the rear side in the rotational direction of the rotating body 6. The flap forming members 51 are provided so as to rotate in opposite directions.

These flap molding members 51 are in contact with both side surfaces of the tube body 2 at both ends in the longitudinal direction of the horizontal seal portion 5a on the rear side in the rotational direction than the seal block 11,
By rotating and pressing the contact portion toward the seal block 11, the tube body 2 (second
Figures a to 2c (As shown, the flap portion 5d to be bonded to the container body 5G of the completed container 5C can be formed.

Further, the inner gripping means 8 and the outer gripping means 9 include, on the rear side in the rotational direction of the pair of flap molding members 51,
A radially inner portion and an outer portion of the tube body 2 are sandwiched, and a bottom portion of a flap portion 51 formed by the flap forming member 51 is formed when viewed from the axial side portion of the rotating body 6 as shown in FIG. 2b, In addition, holding members 52 and 53 each having a triangular shape with the rear side of the tube body 2 in the conveying direction as its apex are provided.

At this time, the clamping angles of the clamping members 52 and 53 are set so that when the container 5A is molded into a roughly triangular shape together with the flap molding member 51, the internal capacity becomes a predetermined amount.

As shown in FIG. 7, each of the flap molding members 51 is
They are attached to the tips of the rotating shafts 54, respectively, and the base of each rotating shaft 54 is passed through a convex portion 10a formed protrudingly on the fixed block 1o, and is inclined by a slight angle t with respect to the radial direction of the rotating body 6. It is rotatably supported on the shaft.

An eccentric pin 55 is attached to the base end face of each rotating shaft 54 at a position eccentric from the center of rotation, and as shown in FIG. It is held in place in the cam groove 57a. The operating rod 56 is disposed in the axial direction of the rotating body 6 and is slidably provided on the fixed flock 10, and the cam plate 57
is inserted into a notch +Ob formed in the fixed block 10 and connected to the actuating rod 56.

The actuating rod 56 is biased to the left in FIG. 8, that is, to the right in FIG. As shown, a cam follower 59 provided at the end of the actuating rod 56 is engaged with a cam member 60 provided on the frame.

In a normal state, the pair of cam plates 57 described above are each located to the left of the axis of the rotating shaft 54 in FIG.
Eccentric pin 5 engaged with cam groove 57a of one cam plate 57
5 is rotated clockwise by the rightward displacement of the actuating port/end 56, and the eccentric pin 55 that engages with the cam groove 57a of the other cam plate 57 is rotated by the rightward displacement of the actuating rod 56. It is designed to be rotated clockwise.

Therefore, the flap molding members 51 provided on each rotating shaft 54 rotate in opposite directions due to the displacement of the operating rod 56 in the left-right direction.

Roughly speaking, the clamping member 52 provided on the inner gripping means 8 is
As shown in FIG. 6, the front side of the rotating body 6 in the rotational direction is connected to a fixed block 10 by a shaft 63 parallel to the axial direction of the rotating body 6.
The rear side of the holding member 52 in the rotational direction is biased by a lever spring 64 in a direction away from the tube and the body 2, that is, inward in the radial direction of the rotating body 6.

A cam rod 65 extending toward the flange portion 6b of the rotating body 6 is attached to the rear side of the holding member 52 in the rotation direction, and the tip of the cam rod 65 is formed eccentrically with respect to the axis of the cam roller 66. It is engaged in the eccentric cam hole 6a.

The cam rod 65 is brought into elastic contact with the inner peripheral surface of the eccentric cam hole 66a by the elastic force of the spring 64, and as the cam roller 66 rotates, the eccentric cam hole 66a rotates eccentrically about its rotation center. Therefore, the holding member 52
The rear side in the rotational direction of the rotating body 6 is swung in the radial direction of the rotating body 6.

As shown in FIG. 3, the cam roller 66 is attached to the tip of a drive shaft 68 that is disposed in the axial direction of the rotor 6 and supported by a bracket 67 attached to the flange portion 6b of the rotor 6. A gear 69 attached to the end of the drive shaft 68 has one end meshed with a sector gear 71 supported pivotally on the flange 6b by a shaft 7o, and a cam follower 72 provided on the sector gear 71 is formed on the cam member 25 described above. The cam groove 25b is worn out.

On the other hand, as shown in FIGS. 4 and 6, the clamping member 53 provided on the outer gripping means 9 holds the front side of the rotary body 6 in the rotational direction by a shaft 75 parallel to the axial direction of the rotary body 6. 30, the rear side of the clamping member 53 in the rotational direction is biased outward in the radial direction of the rotating body 6 which is separated from the tube body 2 by the lever spring 76, and A stopper 77 is provided to restrict rotation of the member 53 by the spring 76.

A cam rod 78 extending toward the flange portion 6b of the rotating body 6 is attached to the rear side in the rotational direction of the holding member 53, and the cam rod 78 is attached to an eccentric cam hole of a cam roller 79 rotatably supported on the bracket 67. 79a through a notch 79b (FIG. 6).

A gear 79ci is formed on the outer periphery of the cam row 579, and as shown in FIGS. 3 and 6, the gear 79c! By meshing with a gear 66b formed on the outer periphery of the cam roller 66, both cam rollers 66, 79 are interlocked so that they can rotate in opposite directions in synchronization with each other. The cam roller 79 is activated when the movable block 30 and the sealing means 3I of the outer gripping means 9 are brought into close contact with the sealing block 11 of the inner gripping means 8, that is, when the outer gripping means 9
The cam rod 78 of the clamping member 53 is positioned in the cam hole 9a through the notch 79b when the cam rod 78 is in the closed position.

In the above configuration, the outer gripping means 9 of the gripping mechanism 7
As the rotating body 6 rotates while it is in the open position! The inner gripping means 8 of the gripping mechanism 7 supports the radially inner portion of the tube body 2 with the gripping portion 11a of the seal block 11. I come to do it.

When the outer gripping means 9 passes the side of the tube body 2, the outer gripping means 9 is moved from the open position 1 to the first intermediate position by the first driving means +2A. In this state,
The gripping part 31a of the sealing means 31 of the outer gripping means 9 becomes parallel to the gripping part 11a of the sealing block 11 of the inner gripping means 8 with a predetermined distance therebetween. It will be held lightly.

When the outer gripping means 9 reaches the first intermediate position, approximately at the same time or before that, the outer gripping means 9 of the gripping mechanism 7 that precedes the gripping mechanism 7 by one moves to the closed position, and the preceding gripping means 9 moves to the closed position. The gripping portions 31'a and Ila of the mechanism 7 grip the tube body 2, and the sealing means 31 applies a horizontal seal to the gripping portion.In this case, the preceding gripping mechanism 7 and the gripping mechanism following it Each pair of flap molding members 51 and clamping members 52 and 53 with respect to 7 are in an open state, so that they do not substantially clamp the tube body 2.

And the gripping parts 31a, 11a of the preceding gripping mechanism 7
When gripping the tube body 2 to form the horizontal seal portion 5a, the flange molding member 51 of the preceding gripping mechanism 7 is rotated, and each flap molding member 51 forms the horizontal seal portion 5a.
On both sides of the tube body 2 at both ends in the longitudinal direction,
By contacting the preceding gripping mechanism 7 at the rear side of the seal block 11 and pressing the contact portion while rotating toward the seal block 11, the tube body 2 is attached to the tube body 2 as shown in FIG. 2c as described above. 5d% of the flap portion shown is formed.

At this time, the subsequent portion of the tube body 2 is dragged forward as the flap portion 5d is formed, but at this time, the subsequent outer gripping means 9 is approximately at the first intermediate position. Since the tube body 2 is located at the 100th position, it is not obvious that the tube body 2 following the flap portion 5d is dragged forward.

When the flap part 5d is formed by the flap forming member 51, the pair of clamping members 52 and 53 are closed to sandwich the tube body 2, and the flap part 5d formed by the flap forming member 51 is used as a bottom part, A triangular shape is formed with the rear side of the tube body 2 in the transport direction as the apex.

When the tube body 2 has a triangular shape, the outer gripping means 9 of the subsequent gripping mechanism 7 moves from the first intermediate position to the second intermediate position and uses both gripping parts 31a and Ila to form the triangular shape. The vicinity of the top of the shaped tube body 2 is held relatively strongly. However, since the vicinity of the top of the tube body 2 is not yet gripped by both the gripping parts 31a and the gripping part 11a, when the triangular tube body 2 is formed by the clamping members 52 and 53, the inside of the tube body 2 is The filling liquid is pushed out backwards, and a triangular portion is smoothly formed in the tube body 2.

In this way, when each pair of flap forming members 51 and clamping members 52, 53 are closed and the amount of the filling liquid therein is accurately regulated to a predetermined amount, the outer gripping means 9 of the subsequent gripping mechanism 7 is moved from the second intermediate position to the closed position, the gripping portions 31a and lla grip the triangular tube body 2 near the top, and the sealing means 31 applies a lateral seal to the gripped portion.

In this case, the outer gripping means 9 of the gripping mechanism 7, which is roughly following the succeeding gripping mechanism 7, passes through the side of the tube body 2 directed vertically downward in the open position,
Further, the first drive means +2A moves the opening value H from the open value H to approximately the first intermediate position GO.

When the gripping mechanism 7, in which the tube body 2 is horizontally sealed at a predetermined position, approaches the cutting device 100, its outer gripping means 9 is opened, and thereby the gripping mechanism 7 is gripped by the inner gripping means 8 and the outer gripping means 9. The continuous container 5A is delivered to the cutting device 100. Further, the flap forming member 51 and the clamping members 52, 53 of the gripping mechanism 7 are also opened, and the same operation is repeated thereafter.

Next, as shown in FIGS. 9 and 10, the cutting device 100 includes a cylindrical member 110 fixed to a frame (not shown).
A drive shaft 111 is arranged horizontally and rotatably supported on the
and the rotary body 101 attached to the drive shaft 111, and the outer interlayer portion 101af of the rotary body +01 is provided with support blocks 1 parallel to the axial direction at equal intervals in the circumferential direction.
03 is installed.

The space between each support block 103 is formed as a pocket 104 for accommodating the above-mentioned container 5A or 5BV. The mount portion 5b of the container 5A, which is located on the rear side in the transport direction with respect to the horizontal seal portion 5a, can be supported by the inclined surface formed on the rear side in the rotation direction.

The rotating body 101 is provided with a positioning mechanism 112 near the rear side of each support block 103 in the rotational direction for bringing the mount portion 5b into pressure contact with the support block 103 and positioning the container 5A and the horizontal seal portion 5a. It's set up.

Each of the positioning mechanisms 112 includes a rotating shaft 113 rotatably supported on the rotating body +01, and positioning members 114 attached to both ends of the rotating shaft 113. As a result of the rotation, the support prongs 103 come into contact with both side surfaces of the container 5A at both ends in the longitudinal direction on the rear side in the rotational direction of the support prong 103.

The positioning member 114 is formed by pressing the contact portion toward the support block 103 through subsequent rotation, thereby forming the flange portion 5dV on the container 5A, and at the same time forming the flap portion 5d. The mount portion 5b on the side of the horizontal seal portion 5a is brought into pressure contact with the support block +03.

A triangular cam member 11 is provided at the end of the rotating shaft 113.
A bin 116 is attached to the cam member 115, and a bin 116 is attached to the rotating body +01 on a line connecting the bin 116 and the axis of the rotating shaft 113.
A tension spring 118 is installed between the terminal 7 and the terminal 7. Therefore, the cam member 115 is rotated from the point where the bin 116 provided on the cam member 115 is on the above-mentioned line, and is held at the respective position by being rotationally displaced in one direction.

When the cam member 115 is rotationally displaced in the counterclockwise direction in FIG. 9 about the rotation axis +13'8, the rotation axis 11
The positioning member 114 provided at No. 3 is in the non-engaging position, and in this state, the tip of the positioning member 114 is approximately aligned with the outer circumferential surface of the cylindrical portion 101a of the rotating body 101. On the other hand, when the positioning member 114 is rotationally displaced in the opposite direction and held at the engagement position, the positioning member 114 forms the flap portion 5d and moves the mount portion 5b toward the support block 10.
3 to position the container 5A and the horizontal seal portion 5ai at predetermined positions.

Roughly speaking, a fixing plate 120 is attached to the cylindrical member 110, and a first plate is attached to the fixing plate 120, which contacts the top of one side of the bin 116 in the cam member 115 and rotates the cam member 115 clockwise. A second bin 122 is provided, which contacts the top of the other side of the bin 126 and rotates the cam member 115 counterclockwise.

The first bin 121 engages with the cam member 115 at a position in front of the rotary cutter 102 to rotate it;
The rotation of the cam member 115 and the rotating shaft 113 moves the positioning member 114 held in the non-engaging position to the engaging position, and the second bin 122 is moved to the engaging position.
After the continuous container 5A is cut into individual containers 5B by 02, it engages with the cam member +15 to rotate it;
The positioning member 114 held in the engaged position can be moved to the non-engaged position.

On the other hand, the rotary cutter +02 has a drive shaft 125 horizontally supported on a cylindrical member 124 fixed to the frame,
The drive shaft 125 is provided with a rotating body 126 attached to the drive shaft 125, and the drive shaft 125 is connected to the drive shaft 11 of the rotating body +01.
It is designed to be rotated in the opposite direction in synchronization with 1. A cutting blade 127 is attached to the outer periphery of the rotating body 126 to cut the horizontal seal portion 5a supported by the support block +03 at its center.

A cutting device with the above configuration! According to +00, a container 5 is provided with a horizontal seal portion 5a by the aforementioned horizontal sealing device 4.
A is transferred from the rotary body 6 of the horizontal seal device=4 to the rotary body +01 of the cutting device 100, and is stored in the pocket +04 of each support block 103 gate, and is supported by the horizontal seal portion 5a between the containers 5A. It is supported by block 103. At this time, the positioning member 114 is located at the non-engaging position, and the tip of the positioning member 114 is approximately at the outer peripheral surface of the cylindrical portion 101a of the rotating body +01.

When the container 5A housed in the pocket 104 approaches the rotary cutter 102, the cam member 115 engages with the first bin 121 and rotates clockwise in FIG. Positioning member 1 held
14 are rotated in the same direction.

Then, as described above, the positioning member 114 engages with the rear side in the conveying direction of the flap portion 5d formed on both sides of the mouth portion b of the container 5A, and presses that portion toward the support block +03. As a result, the mount part 5
When the container 5A is pressed against the support block 103, the container 5A is positioned, and at the same time, the horizontal seal portion 5a adjacent to the mount portion 5b is also positioned at a predetermined position.

When the container 5A passes through the rotary cutter 102 in this state, the cutting blade 1 of the rotary cutter 102
27 allows the horizontal seal portion 5a to be cut exactly at its center.

In this way, when the continuous containers 5A become separate containers 5B, the cam member 115 engages with the second bin 122, so the mount portion 5b is brought into pressure contact with the support block 103. The positioning member 114 is rotated in the counterclockwise direction in FIG.

In the above embodiment, the rotary cutter 102 is used as the cutting means for cutting the horizontal seal portion 5a, but the present invention is not limited to this, and it is also possible to use a cutting means in which the cutting blade 127 is reciprocated. Of course it can be done.

Next, the rotating body 101 of the cutting device 100 is provided with an extrusion mechanism 130 for extruding the individually cut containers 5B toward the direction conversion table N200. This extrusion mechanism 13
0 is equipped with an extrusion rod 131 that is slidable in the radial direction of the rotating body 101, and a spring 132 that biases the extrusion rod 131 inward in the radial direction. The cam follower 133 is connected to the above spring 132.
It is attached to the cylindrical member 110 by the force of the bullet 18 and is brought into elastic contact with the outer peripheral cam surface of the cam member 134.

The extrusion rod 131 is connected to the adjacent support block 10.
3, it can protrude radially outward from the outer circumferential surface of the outer circumferential cylindrical part 101a, thereby pressing outward approximately the center of the radially inner side surface of the container 5B, When the support block 103 is at almost the same height as the drive shaft 111 of the rotating body 101, the container 5B is rotated clockwise in FIG. It can be pushed out to the side.

As shown in FIGS. 11 to 13, the direction changing device 200 includes a horizontally disposed drive shaft 210 and a rotating body 201 attached to the drive shaft 210. A pair of rotary plates 211 are provided on the outer periphery thereof and spaced apart by a predetermined distance M.

On the outer periphery of the rotary plate 211, holding means 202 are provided at equal intervals in the circumferential direction.
02 includes a bracket 212 attached to each of the pair of rotary plates 211, a suction member 213 pivotally supported on the bracket 212 so as to be swingable, and a suction pad 214 provided on each suction member 213. ing.

The suction member 213 is formed of a U-shaped member, and the tip portions of the arm portions 213a on both sides are attached to the brackets 213.
The suction pad 214 is provided on the main body portion 213b which is pivotally supported by the container 2 and connects both arm portions 213a, so that the suction pad 214 can suction and hold the inner circumferential surface of the container 5B with respect to the rotating body 201. There is. The above suction pad 21
4 is connected to a negative pressure source through a rotary joint 215, and the rotary joint 215 connects the rotating body 201.
The negative pressure source is communicated with the negative pressure source over a predetermined rotation angle range.

The swinging mechanism 220 that swings the suction member 213 to control its direction includes an arc-shaped hook 221 attached to one arm 213a and a sector gear 222 meshed with the hook 221. This sector gear 222 is integrally attached to a rotating shaft 223 that is supported by the rotating body 201.

Then, a cam follower 225 is attached to the tip of the cam lever 224 attached to the end of the rotating shaft 223 (
A tension spring 226 is tensioned between the cam lever 224 and the rotating body 201, and the tension spring 226 biases the cam lever 224 to rotate in the clockwise direction in FIG. The outer cam surface of a cam member 228 attached to a cylindrical member 227 fixed to the cylindrical member 227 is engaged with the outer cam surface of a cam member 228.

In the above configuration, the mouth-shaped suction member 213 of the direction changing device N200 is transferred as the rotating body 201 rotates, and when it approaches the rotating body 101 of the cutting device @100,
The swinging mechanism 220 directs the suction member 213 in a substantially horizontal direction, that is, in a state in which the arm portion 213a of the adsorption member 213 faces substantially in the radial direction of the rotating body 201, and the main body portion 213b thereof is located radially inward.

On the other hand, the containers 5B whose horizontal seal portions 5a are cut by the rotary cutter 102 and separated into individual containers are separated into horizontal seal portions 5a.
are positioned at the front and rear of the conveyance direction of the rotary body 101, that is, the container 5B is conveyed in an overturned state relative to the outer peripheral surface of the rotary body +01. Therefore, the container 5B is conveyed with the rotation of the rotary body 101, and (
The horizontal seal portion 5a is in an upright state with the vertical seal portion 5a facing up and down, and the mouth-shaped suction member 21 of the direction changing device 200
3 will be imported into the country.

In this state, the extrusion rod 131 provided in the cutting device 100 moves forward and extrudes the container 5B while rotating it clockwise in FIG. 11 on the support block 103.
The outer surface in the radial direction based on the rotating body 101 of B, and therefore the inner surface in the radial direction based on the rotating body 201, is compressed by the suction pad 214.

As a result, when the suction pad 214 suction-holds the container 5B, the container 5B is suctioned by the suction pad 214 and transferred as the rotating body 201 rotates. The suction member 213 is moved to the rotating body 2 by the swing mechanism 220.
01, the container 5B is rotated clockwise with respect to the rotating body 201, and the container 5B, which is suctioned and held by the suction pad 214, is transported while being maintained in a substantially upright state.

At this time, the center of rotation of the suction member 213 is set so that it is approximately aligned with a line passing through the center of gravity of the container 5B, thereby making it possible to rotate the container 5B smoothly without falling off the suction pad 214. can.

The container 5B is the container forming device 3000 rotating body 30.
1, the container 5B is attitude-controlled in the direction along the inclination of the accommodating portion 302 of the container forming device 300, and then the suction holding by the suction pad 214 is released, and the horizontal seal portions 5a at both ends of the container 5B close to the container 5B. Rotating body 30 of molding device 300
The housing portion 3
It seems that it is supplied falling into 02.

Note that in the above embodiment, a gripping mechanism 778 is provided on the outer periphery of the rotating body 6.
Although it is provided, an endless checkerboard is used instead of the rotating body 6,
A gripping mechanism 7 may be provided on the outer periphery of the endless chain.

"Effects of the Invention" As described above, in the present invention, the first driving means moves the outer gripping means from the open position to the intermediate position while rotating the gripping part with respect to the gripping part of the inner gripping means. Both grips can be placed in a parallel state, and then both grips can be brought into pressure contact with each other by the second driving means while maintaining the parallel state, so that the tube body is not pushed out to the open side of both grips as in the conventional case. Therefore, the tube body can be gripped in a stable state and a reliable lateral seal can be performed.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram showing the entire container manufacturing apparatus showing an embodiment of the present invention, Fig. 2a is a plan view of a continuous container 5A manufactured by the horizontal sealing device 4, and Fig. 2b is Fig. 2a. 2c is a perspective view of the completed container 5C, FIG. 3 is a partial cross-sectional side view showing the gripping mechanism 7 of the horizontal sealing device 4, and FIG. 4 is the outer gripping means 9 of the gripping mechanism 7. 5 is a sectional view taken along line V-V in FIG. 4, FIG. 6 is an enlarged front view of the main part of the rotating body 6 of the horizontal sealing device 4, and FIG. Fig. 8 is a sectional view taken along the line ■-■ in Fig. 7, and Fig. 9 is a partial sectional view of the main part.
10 is a vertical sectional view of FIG. 9, FIG. 11 is a partial sectional front view of the direction changing device 200 shown in FIG. 1, and FIG. FIG. 13 is a left side view of FIG. 12. 2...Tube body 4...Horizontal sealing device 5A
, 58.5 C-=container 5 a =-horizontal seal part 5b...mount part 5C...container body 5d
...Flap part 6...Rotating body 7...Gripping mechanism 8...Inner gripping means 9...Outer gripping means 11a, 31a...Gripping parts 12A, 12B
, 12G... Drive I71 mechanism 31... Sealing means

Claims (1)

[Claims] A means for conveying a tube body that is circulated, an inner gripping means that is provided at a plurality of locations on the outer periphery of this conveyance means, and an inner gripping means that is located inside the conveyance means that is circulated, and an outer grip that is located outside of the conveyance means that is circulated. and a gripping mechanism having said outer gripping means, a closed position in which a gripping part provided on said outer gripping means is pressed against a gripping part provided in said inner gripping means, and an open position in which said gripping means is laterally removed from the outside of said inner gripping means. a drive mechanism for moving between the
sealing means for applying a lateral seal to the tube body gripped by the two gripping parts, the tube body having a filler therein supplied to the inner gripping means in the open position of the outer gripping means; In the horizontal sealing device for applying a horizontal seal to the tube body in a direction intersecting the conveying direction thereof by gripping the tube body with a gripping part of the inner gripping means and a gripping part of the outer gripping means pressed toward the gripping part, the drive mechanism a first driving means for moving the outer gripping means between the open position and an intermediate position where the gripping part of the outer gripping means is spaced a predetermined distance from and substantially parallel to the gripping part of the inner gripping means; and a second drive means for moving the outer gripping means between the intermediate position and the closed position while maintaining the parallel state of both gripping parts.