JPH02282004A - Belt conveyor for box motion type heat melt cutting sealing device for horizontal bag making filling packaging machine - Google Patents

Abstract

PURPOSE:To prevent short sized articles, small articles and heavy weight articles, etc., from falling off by moving a movable block so that a movable belt roll for table on the upstream side separates from a movable belt roll for table on the downstream side when upper and lower heaters are closed. CONSTITUTION:A movable belt roll for table 2a on the downstream side, which approaches the upstream side to a heater H2 on the lower side, is constituted to become a movable belt roll with a double slide structure for which the conveyor belt is arranged not to sag. Therefore, a horizontal motion which is equivalent to the horizontal component of a box motion by upper and lower heaters H1, H2 can be performed. In addition, when the upper and lower heaters H1, H2 are opened, a movable belt roll for table 2a on the upstream side gives a horizontal motion in the separating direction, and an interval to a movable belt roll for table 4a on the downstream side is made larger. Also, when the heaters are opened, the movable belt roll for table 2a on the upstream side gives a horizontal motion in the approaching direction to close the interval. By this method, at the time of packaging of short sized articles, small articles and heavy weight articles, etc., accidents due to falling of articles to be packaged are eliminated.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a product delivery conveyor in a horizontal bag-forming-fill-sealing machine such as a horizontal billow packaging machine, and particularly to a belt incorporated in a box motion type heat-melting sealing device. Concerning conveyors.

[Prior art and its problems] First, a box motion type heat-melting sealing device of a conventional horizontal bag-forming-filling-sealing machine will be briefly described. This device has a box motion between the upper and lower heaters. Here, to explain the operation of the box morsion, the upper and lower heaters are opened vertically, then closed at the upstream position so as to align with the registration mark on the wrapping paper, and move a predetermined distance in synchronization with the speed of the wrapping paper. , it opens up and down again at the downstream position and returns to the upstream position, and has the advantage of allowing more time to heat-seal the wrapping paper compared to a rotary cutter.

There are various mechanisms for box motion of the upper and lower heaters. For example, there is a structure in which both ends of the upper and lower heaters are attached to connecting links of a double crank mechanism, and a structure in which both ends of the upper and lower heaters are attached to a front cam (
14 cam) and has a structure in which a flat circular cam groove of the front cam is rotated by a crank (for example, Japanese Utility Model Application No. 62-54910).

The box motion of the upper and lower heaters requires conveyors upstream and downstream of the heaters that are close to the heaters and whose speeds are synchronized to substantially change the table length; In the past, there were two types with very specific structures, both of which are still in use today. One is an endless roller conveyor. In other words, an endless conveyance chain is wound vertically from left to right, a large number of rollers are wound around the conveyance chain, and the number of rollers is thinned out at regular intervals, so that the lower part of the core is thinned out. It has a structure in which the heater appears and disappears. The other type is a belt conveyor, in which the belt conveying surface drops into a gap in the middle, and the conveyor belt is wrapped around the gap so that it moves back and forth. It has a structure in which the heater on the side appears and disappears.

Roller conveyors are difficult to assemble, make a lot of noise, and have gaps between the rollers, which may turn customers off. and escapes downward,
Even if the packaged item is a short item, a small item with two weights, or a bulk item, the packaged item will not fall from the part where the roller is not provided.

On the other hand, belt conveyors operate quietly, but if the package is small, the package may be separated on the table surface on the downstream side when the lower heater sinks into the gap midway on the belt conveyance surface. It cannot be applied to the packaging of small items, etc., as there is a problem that the lower heater may fall off the table surface. Therefore, when the lower heater sinks from the table surface, the gap in the middle of the belt conveying surface is closed, and it can be used for packaging small items, etc. There is a device that can also be applied (Utility Model Publication No. 49-28133).

However, in this invention, when the belt is operated at high speed, the rising speed of the lower heater becomes faster, and the lower heater strongly flips up the small roller that closes the gap in the middle of the belt conveying surface. Small rollers have low durability and require replacement after a short period of time. It also becomes a source of sweating. Furthermore, small rollers do not actively feed the packaged items, so even though they can wrap short and small items, there is a limit to their size, and short items below a certain size However, when it comes to small items, there is also the problem that the packaged items may fall into gaps in the middle of the belt conveyance surface. Furthermore, depending on the type of packaged item, there is a risk that the bottom surface may be damaged.

[Problems to be Solved by the Invention] The present invention aims at adjusting the downstream belt conveying surface and the downstream belt conveying surface so as to match the reciprocating horizontal movement of the horizontal component of the box mosh weight of the upper and lower heaters of the heat-fusion sealing device. Not only do the lengths of the surfaces vary, but in addition, the upstream side Belt for box motion type heat-cut sealing device of horizontal bag-forming-fill-sealing machine, which has double length change on belt conveying surface and can be used for packaging short items, small items, heavy items, etc. The purpose is to provide a conveyor.

[Means for Solving the Problems] The belt conveyor for the box motion type heat-melting sealing device of the horizontal bag-forming-fill-sealing machine of the present invention has upper and lower heaters H.
1. It can be installed on the upstream and downstream sides of a box motion type heat-melting sealing device of a horizontal bag-forming-fill-sealing machine that performs an end seal between the packaged items W and W of the packaged cylinder F in H2, and When the side heater H2 rises, the horizontal movement of the movable table 6, which is provided across the sides of the upstream conveyor A and the downstream conveyor B and is horizontally movable along the conveyor conveyance direction, causes the movable belt roll 2 for the upstream table to move horizontally.
Box motion type heating of a horizontal bag-forming-fill-sealing machine, in which a movable belt roll 4a for a table on the downstream side moves horizontally together with the lower heater H2 while remaining close to the lower heater H2. A belt conveyor for a fusing seal bending device includes: a movable block 7 provided on the movable table 6 and capable of horizontal movement along the conveyor conveyance direction independently of the movable table 6; and a movable block movement for horizontally moving the movable block 7. The upstream belt roll group 2 constituting the downstream conveyor A includes upstream table movable belt rolls 2a having equal roll diameters and pivotally supported by the downstream upper part and the ha lower part of the movable block 7. and an upstream side deflection removing movable belt roll 2b, and a predetermined position below the upstream side deflection taking up movable belt roll 2b and between the upstream side table movable belt roll 2a and the upstream side deflection taking up movable belt roll 2b. It is configured to include a belt roll 2c for upstream side deflection removal and guide provided with a fixed shaft position, and a conveyor bell) l is provided on the outside of the upstream side table belt roll 2a and for upstream side deflection removal. The downstream belt roll group 4 that constitutes the downstream conveyor B is wound around the inside of the movable belt roll 2b and the outside of the upstream deflection removing and guiding belt roll 2C, and is wound around the center of the movable table 6. A movable belt roll 4a for a downstream table and a movable belt roll 4b for removing deflection on the downstream side, which are pivotally supported at the upper part of the approach and the lower part of the downstream side and have equal roll diameters, and a belt roll below and downstream of the movable belt roll 4b for taking up the downstream deflection. It is configured to include a belt roll 4c for downstream side deflection and guide, which is provided with its shaft position fixed at a predetermined position between the movable belt roll 4a for the side table and the movable belt roll 4b for downstream side deflection, and the conveyor. The belt 3 is wound around the outside of the upstream table belt roll 4a, the inside of the downstream deflection-taking movable belt roll 4b, and the outside of the downstream deflection-taking and guiding belt roll 4C, The movable block moving means 8 moves the upper and lower heaters H
1 and H2 are closed, the movable block 7 is moved so that the upstream table movable belt roll 2a is separated from the downstream table movable belt roll 4a, and the upper and lower heaters H1 and H2 are closed. When opening, the movable block 7 is moved so that the upstream table movable belt roll 2a approaches the downstream table movable belt roll 4a. It is characterized by this.

[Function] The movable belt roll 2a for the table on the downstream side, which is close to the upstream side of the lower heater H2, is configured to be a movable belt roll with a double slide structure to prevent the conveyor belt from sagging. There is.

Therefore, not only can horizontal movement equal to the horizontal component of the box motion of the upper and lower heaters H1 and H2 be performed, but also when the upper and lower heaters H1 and H2 open, the movable belt roll 2a for the upstream table can horizontally move in the separating direction. to open a gap with the downstream table movable belt roll 4a,
Furthermore, when the heater is opened, the movable belt roll 2a for the upstream table moves horizontally in the approach direction to close the gap, thereby eliminating the accident of dropping the packaged product when packaging short products, small products, heavy products, etc.

Hereinafter, each embodiment will be explained to the extent that it does not overlap with the explanation of the above-mentioned [Means for Solving the Problems].

[First Embodiment: Figures 1 to 3] First, the configuration of a box motion type heating, melting, and sealing device of a horizontal bag-forming-filling-sealing machine in which a belt conveyor according to the present invention is incorporated will be described.

The upper and lower heaters H1 and H2 are vertically symmetrical oblate circular locus X1. While performing the box motion of X2, the cylinder to be packaged F
Two end seals (heat seals) are applied between the packaged items W and W, and either one (the upper one in the figure)
The cutter K installed when the heater is opened is the heater Hl,
During heat sealing of H2, it is pushed and slid to cut between the two end seals. In addition, the box motion of the heaters H1 and H2 is performed using grooved cams (
Although a front cam) and a crank are used,
It is not limited to this.

Next, the configuration of the belt conveyor according to the present invention will be explained.

Regarding the lower heater H2, the belt conveyor is configured such that the conveyor belt is divided into two parts, an upstream conveyor A and a downstream conveyor B. The conveyor drive source 5 is provided in common to both conveyors A and B, and is configured to drive both conveyors A and B rightward in the drawing at the same speed.

The upstream belt roll group 2 constituting the upstream conveyor section A is provided with a movable belt roll 2a for an upstream table, whose axial position is movable in the horizontal direction, and a fixed axial position. Belt roll 2 for upstream table
There is a conveyor belt (d) and a conveyor belt (l) stretched horizontally to form a conveyance surface, and a movable belt roll 2b for taking up deflection on the upstream side is provided at the bottom so that the shaft position can be moved in the horizontal direction.
There are a belt roll 2c for taking up deflection on the downstream side and a belt roll 2e for driving the upstream side, both of which are provided with fixed shaft positions, and tension the conveyor belt 1 so that it does not slacken.

The downstream belt roll group 4 constituting the downstream conveyor section B is provided with a downstream table movable belt roll 4a whose axial position is movable in the horizontal direction, and a fixed axial position. Belt roll 4 for downstream table
d, the conveyor belt 3 is stretched horizontally to form a conveying surface, and a movable belt roll 4b for taking up deflection on the downstream side is provided at the bottom so that the shaft position can be moved in the horizontal direction.
There are a belt roll 4c for a downstream deflection and guide and a belt roll 4e for a downstream guide, both of which are provided with fixed shaft positions, to tension the conveyor belt 3 so that it does not slacken.

The four movable belt rolls 2a, 2b4a, 4b all have the same diameter.

The distance between the upstream deflection-removing/guiding belt roll 2c and the downstream deflection-removing/guiding belt roll 4C, both of which have fixed shaft positions, is the required interval so as not to interfere with the lower heater H2 that performs box motion. It is opened to

The conveyor drive source 5 includes a motor 5a, sprockets 5b to 5e, and endless chains 5f to 5h,
The sprocket 5e is fixed coaxially to the belt roll 2e, and the sprocket 5c is fixed coaxially to the belt roll 4C.

And the four movable belt rolls 2a.

2b, 4a, 4b can perform a reciprocating horizontal movement equal to the horizontal component of the box motion of the upper and lower heaters H1, H2 by the movable table 6, and furthermore, the movable belt roll 2
a, 2b can horizontally move in accordance with the opening and closing of the upper and lower heaters H1, H2 by horizontally moving the movable block 7 so as not to interfere with the upper and lower heaters H1, H2.

To be more specific, there is a pair of movable tables 6 on both sides of the conveyor, and they consist of a horizontal guide 6a and a table body 6b guided by the horizontal guide 6a. It is fixed to a horizontally movable heater guide member (not shown) that supports the upper and lower heaters H1 and H2 so as to guide them so that they can be opened and closed vertically. It is designed to perform equal reciprocating horizontal movements. Further, the table body 6b on each side has a block horizontal guide part 61, and a movable block 7 is slidably fitted into the block horizontal guide part 61, and the movable block 7 is fitted on the upstream side. The movable belt roll 2a for the table and the upstream movable belt roll 2b for taking up deflection are supported at both ends, and the movable belt roll 4a for the downstream table and the movable belt roll 4b for taking up downstream deflection are respectively supported on the movable table 6. Supported at both ends.

Then, both sides of the lower heater H2 and the movable blocks 7 on each side are connected by movable block moving means 8,
The movable block 7 can freely approach and separate in conjunction with opening and closing of the upper and lower heaters Hl and H2. The movable block moving means 8 has a link 8a whose one end is pivotally connected to the movable block 7, and an elongated hole 81 having a required length in the vertical direction, and the other end of the link 8a is engaged with the elongated hole 81. The slot guide body 8b is fixed to the side end of the heater block HB which supports the lower heater H2.When the upper and lower heaters H1 and H2 open, the lower heater H2 Heater H2 is the movable belt roll 2 for the upstream table.
A pair of links 8a on both sides pull the movable block 7 when it is lowered so as not to interfere with the movable block 7a.
The upstream table movable belt roll 2a moves to substantially eliminate the gap between the upstream conveyor section A and the downstream conveyor section B.

Furthermore, before the upper and lower heaters H1 and H2 are closed, a pair of links 8a on both sides extend against the movable block 7 to move the block upstream. Before the heater H2 goes up, the movable belt roll 2a for the upstream table moves horizontally to ensure a gap between the upstream conveyor section A and the downstream conveyor section B again.

The movable belt roll 2a for the upstream table is located at the upper part of the movable block 7 closer to the downstream side, and the movable belt roll 2b for upstream side deflection is located at the lower part of the movable block 7 closer to the upstream side. Both belt rolls 2a and 2b are connected to a pair of movable blocks 7 on both sides so that the movable belt roll 2b for removing side deflection is lower than the movable belt roll 2a for the upstream table by the height of one roll. Both ends are supported, and the upstream deflection-taking and guiding belt roll 2c is below the upstream deflection-taking movable belt roll 2b, and is connected to the upstream table movable belt roll 2a and the upstream deflection-taking movable belt roll 2b. The shaft position is fixed at a required position between the two. Then, the upstream conveyor belt 1 is placed outside the upstream side movable belt roll 2a for the table, inside the upstream side movable belt roll 2b for taking up deflection, and further outside the belt roll 2C for taking up the second stream side deflection. Each is wrapped. Then, the conveyor belt portion between the belt contact point of the upstream table movable belt roll 2a and the belt contact point of the upstream deflection absorbing movable belt roll 2b is stretched horizontally, and The conveyor belt section between the belt contact point of the upstream deflection absorbing movable belt roll 2b and the belt contact point of the upstream deflection absorbing/guiding belt roll 2C is stretched horizontally, so that the movable block 7 Even if the upstream conveyor bell (1) moves horizontally, it does not slacken.

Similarly, the movable belt roll 4a for the downstream table is located at the upper part of the movable table 6 closer to the center, and the movable belt roll 4b for downstream deflection is located at the lower part of the movable table 6 closer to the downstream side. In addition, both belt rolls 4a and 4b have a pair of movable belt rolls on both sides so that the downstream movable belt roll 4b for taking up deflection is lower than the downstream table movable belt roll 4a by the height of one roll. Both ends are supported by the table 6, and the belt roll 4C for downstream deflection removal and guide is located below the movable belt roll 4b for downstream deflection and is movable for downstream table movable belt roll 4a. It is provided at a predetermined position between the belt rolls 4b with the shaft position fixed. Then, the downstream conveyor belt 3 is placed outside the downstream table movable belt roll 4a and inside the downstream deflection absorbing movable belt roll 4b.
Furthermore, the downstream side deflection removing and guiding belt roll 4C
wrapped around the outside of each. Then, the conveyor belt portion between the belt contact point of the downstream table movable belt roll 4a and the belt contact point of the downstream deflection absorbing movable belt roll 4b is stretched horizontally, and The conveyor belt section between the belt contact point of the downstream movable belt roll 4b for taking up deflection and the belt contact of the upstream belt roll 4C for taking up deflection and guide is stretched horizontally, so that the movable table 7 The downstream conveyor belt 3 is designed not to slack even during horizontal movement.

Next, the effect will be explained.

The movable block 7 is mounted on a movable table 6 that performs a reciprocating horizontal movement equal to the horizontal component of the box motion of the upper and lower heaters H1 and H2, and the upper and lower heaters) I
When I and H2 close, they move horizontally so as not to interfere with the lower heater H2, and when upper and lower heaters H1 and H2 open, they close the gap between the heaters, so the upper and lower heaters Assuming that H1 and H2 approach the upstream position of the box motion and close, the movable belt roll 2a for the upstream table that closes the upper side of the lower heater H2 will not interfere with the lower heater H2. Then, when moving to the downstream position of the box motion with the upper and lower heaters H1 and H2 closed, the upstream table movable belt roll 2a is moved upstream of the lower heater H2. The movable belt roll 2a for the table on the upstream side moves horizontally while maintaining a close state, and then when the upper and lower heaters H1 and H2 reach the downstream position of the box motion and open it, the movable belt roll 2a for the upstream table moves In order to avoid interference with heater H2, it closes immediately after lower heater H2 is lowered.

Subsequently, with the upper and lower heaters H1 and H2 open,
When moving to the upstream position of the box motion, the upstream table movable belt roll 2a moves horizontally while remaining close to the downstream table movable belt roll 4a.

In the above case, in the upstream conveyor section A, the distance between the axes of the upstream table movable belt roll 2a and the upstream deflection absorbing movable belt roll 2b does not change, and the upstream table movable belt roll 2a and the upstream table Since the structure is such that the change in the distance between the axes of the belt a-ru 2d and the change in the distance between the axes of the upstream deflection absorbing movable belt roll 2b and the upstream deflection absorbing/guiding belt roll 2C, the movable table No matter where the movable block 6 and the movable block 7 are located, the upstream conveyor belt l will not loosen, and the downstream conveyor section B has a movable belt roll 4a for the downstream table and a movable belt roll 4a for taking up the downstream deflection. belt roll 4
The distance between the axes of b does not change, and the distance between the axes of the movable belt roll 4a for the downstream table and the belt roll 4d for the downstream table does not change. Since the configuration cancels out the change in the distance between the axes of the conveyor belt roll 4C, the downstream conveyor belt 3 will not loosen no matter where the OT mover table 6 is located, so it will not loosen the winding of the conveyor belt 3 (1-T heater). (In order to match the reciprocating horizontal movement of the water component of the box morsion in 1. ,moreover,
When the lower heater is in the lowered position, the length of the belt conveying surface of the upstream conveyor section A changes so that the gap between the upstream belt conveying surface and the downstream belt conveying surface is substantially eliminated. This prevents the belt from feeding the product backwards when a gap occurs or disappears between the upstream conveyor section A and the downstream conveyor section B.
Accidents of falling packages when packaging heavy items, etc. are eliminated.

[Second Embodiment...FIGS. 4 to 6] In this embodiment, only the points different from the first embodiment will be explained, and the same constituent members will be given the same reference numerals as in the first embodiment.

The belt conveyor of this embodiment includes an endless conveyor belt 9, and the conveyor belt 9 detours below the lower heater H2 so that the conveyor belt 9 is connected to the upstream and downstream sides of the lower heater H2. It has a downstream belt roll group 10 on which a conveyor belt 9 is stretched so as to constitute an upstream conveyor A' and a downstream conveyor B', a downstream belt roll group 11, and a conveyor drive source 12.

The upstream belt roll group 10 includes an upstream table movable belt roll 10a whose axial position is movable in the water direction, and an upstream table belt roll 10d whose axial position is fixed. conveyor belt 9
is stretched horizontally to form a conveying surface, and furthermore, a movable belt roll lOb for taking up deflection on the second stream side is provided below the two rolls so that the shaft position can be freely moved in the horizontal direction.
and an upstream side deflection absorbing/guiding belt roll 10c, both of which are provided with their shaft positions fixed, ``two-wave side guiding belt rolls 10e-11h'' and a driving belt roll 1.
There is 0i.

Further, the downstream belt roll group 11 has, at the top, a movable belt roll lla for the downstream table whose axial position is movable in the water direction, and a belt roll lid for the downstream table whose axial position is fixed. A conveyor belt 9 is stretched horizontally to form a conveying surface, and a movable belt roll LLB for taking up deflection on the downstream side is provided roughly below the two rolls so as to be movable in the horizontal direction. There are a belt roll llc for taking up deflection and guiding on the downstream side, which is provided with a fixed shaft position, and belt rolls lie to ttg for upstream side guides.

The guide belt rolls 10e, 1of 11e, llf have the conveyor belt 9 stretched so as to detour inwardly below the lower heater H2.
Guide belt roll LOg.

11g, the conveyor belt 9 is stretched around the outer circumference below the lower heater H2, and the guide belt roll lOh is such that the conveyor belt 9 is wrapped around the drive belt roll 10i so that the central angle is I'm trying to make it bigger.

The four movable belt rolls 10a, 10b.

11a and llb all have the same diameter. The interval between the downstream deflection removing and guiding belt roll 10c and the downstream deflecting and guiding belt roll llc is set at a required interval so as not to interfere with the lower heater H2 that performs box morsion.

A motor serving as the conveyor driving source 12 is directly connected to the driving belt roll lot.

``Then, similarly to the first embodiment described above, the four movable belt rolls 10a, 10b, and 11a.

11b, the upper and lower heaters H1 are connected by the movable table 6.
, H2, and the horizontal movement of the movable block 7 prevents interference with the upper and lower heaters H1, H2. It is designed to be able to perform horizontal movements according to the

In addition, the correlation between movable belt rolls lOa, lOb, and 10c is the same as the correlation between movable belt rolls 2a, 2b, and 20 in FIG.
The correlation between b and lie is the movable belt roll 4a in FIG.
and 4b and 40 are the same as the correlations.

Therefore, the belt conveyor is - conveyor belt 9
The only feature is that the upstream conveyor A' and the downstream conveyor B' are constructed by detouring below the lower heater H2.

The operation is the same as that of the first embodiment described above, and will therefore be omitted.

[Peripheral scope of the present invention] (1) In the belt conveyor shown in FIG. 1, the upstream conveyor A and the downstream conveyor B may be driven by separate drive sources.

(2) As the movable block moving means 8, a linear actuator is attached to the upstream end of the movable table 6 on each side, and the operating ends of the pair of linear actuators are connected to the movable block 7.
The movable block 7 may be moved in conjunction with the opening and closing of the upper and lower heaters H1 and H2 by connecting the linear actuator to the linear actuator and expanding and contracting the linear actuator.

(3) As the movable block moving means 8, a pinion is rotatably attached to the movable table 6 on each side so that the axial position is fixed, and a horizontal rack is provided on each movable block 7 so as to mesh with each of the pinions. In order to allow horizontal movement of the pair of horizontal racks, a vertical rack that engages with the pair of pinions may be provided on either one of the upper and lower heaters H1 and H2.

(4) Movable block 7 as movable block moving means 8
A cam follower is provided in each of the upper and lower heaters H1, and a cam plate having a cam groove for guiding the cam follower is attached to the upper and lower heaters H1,
Attach to either side end of H2, upper and lower heater 8
1. When H2 opens and closes, the movable block 7 may be horizontally movable due to the guiding action of the cam plate on the cam follower.

[Effects of the Invention] As explained above, according to the belt conveyor for the box motion type heat-sealing device of the horizontal bag-forming-fill-sealing machine of the present invention, the upstream side closer to the lower heater than the upstream side The table belt roll is supported so that the conveyor belt becomes a movable belt roll with a double slide structure that does not sag, and the other downstream table belt roll is supported so that it becomes a movable belt roll with a double slide structure that prevents the conveyor belt from sagging. The two table movable belt rolls, which are supported as movable belt rolls and are close to the upstream and downstream heaters respectively from the upstream and downstream sides of the feed-side heater, control the horizontal component of the box motion of the upper and lower heaters. Not only can the movable belt roll for the upstream table move away from the movable belt roll for the downstream table to avoid interference with the heater when the heater is open, but it also approaches when the heater is closed, which results in a large weight. Even if the product is short or small, it can easily pass between the belt rolls without falling or falling between the belt rolls, making it suitable for packaging short products, small items, heavy items, etc. A bag filling and packaging machine can be realized.

[Brief explanation of drawings]

Figures 1 to 3 relate to a first embodiment of a belt conveyor for a box motion type heat-sealing sealing device of a horizontal bag-forming-fill-sealing machine of the present invention, and Figure 1 shows the upper and lower heaters open and the upstream side This is a cross-sectional view showing a state in which the conveyor has extended and closed the gap between it and the downstream conveyor, and in Figure 2, the heater has moved to the upstream position and the upstream conveyor has contracted to close the gap between it and the downstream conveyor. It is a sectional view showing a state in which the upper and lower heaters have closed after opening and horizontal sealing has started, and Fig. 3 shows a state in which the upper and lower heaters have closed and the upstream conveyor has shrunk to open a gap between it and the downstream conveyor. FIG. 3 is a cross-sectional view showing a state in which it is horizontally moved to a downstream position. Figures 4 to 6 relate to a second embodiment of the belt conveyor for the box motion type heat-fusion cutting range device of the horizontal bag-forming-fill-sealing machine of the present invention, and Figure 4 shows the upstream conveyor with the upper and lower heaters open. 5 is a cross-sectional view showing a state in which the heater is extended and closes the gap between it and the downstream conveyor, and FIG. Fig. 6 is a sectional view showing a state in which the upper and lower heaters are closed and horizontal sealing is started after the upper and lower heaters are closed, and the downstream conveyor is contracted and the gap between it and the downstream conveyor is left open. FIG. 3 is a cross-sectional view showing a state in which it has been horizontally moved to a downstream position. Hl, H2...Upper and lower heaters F...Cylinder to be packaged.・Packaged items, ψdownstream conveyor, ・Downstream conveyor, O upstream conveyor belt, ・Upstream belt roll group, ・Movable belt roll for upstream table, ψφ movable belt roll for removing sag on the original wave side. Upstream side deflection and guide belt W ・ ・ A 11 11 B ・ Weight +1 ・ 2 ・ ・ 2 a ・ b - 2C ・ Roll, 3 ・ ・ 4- ・ 4 a ・ 4 b ・ 4c. Roll, 5 ・ ・ 6 ・ Fist 7 meeting - 8 ・ ・ 9 ・ Fist ・Downstream conveyor belt.・Downstream belt roll group, ・・Movable belt roll for the downstream table. −・Movable belt roll for downstream deflection removal, fist/downstream deflection removal/guide belt Φ conveyor drive source, movable table, first upstream movable block, Φ movable block opening/closing means, ・Conveyor belt, A′・・・Upstream conveyor. B': Downstream conveyor, 10: Upstream belt roll group, 10a: Movable belt roll for table on the upstream side, 10b: Movable belt roll for upstream side deflection removal, 10c: Also serves as upstream side deflection remover. Guide belt roll, 11...downstream belt roll group, 11a...movable belt roll 11b for downstream table
- Movable belt roll for downstream deflection removal, 11c... Belt roll for downstream deflection removal and guide, 12... Conveyor drive source, Patent applicant Kawashima Seisakusho Co., Ltd.

Claims (1)

[Scope of Claims] The present invention can be incorporated into the upstream and downstream sides of a box motion type heat-melting sealing device of a horizontal bag-forming-fill-sealing machine that performs an end seal between objects to be packaged in a tube to be packaged using upper and lower heaters, and When the lower heater rises, the horizontal movement of the movable table, which is provided across the sides of the upstream conveyor and the downstream conveyor and is horizontally movable along the conveyor transport direction, causes the movable belt roll for the upstream table and the downstream side to move horizontally. A belt conveyor for a box motion type heat-cut sealing device of a horizontal bag-forming-fill-sealing machine, in which movable table belt rolls move horizontally together with the lower heaters while remaining close to the lower heaters. The upstream conveyor includes: a movable block provided on the movable table and capable of horizontal movement along the conveyor conveyance direction independently of the movable table; and movable block moving means for horizontally moving the movable block. The upstream belt roll group includes an upstream table movable belt roll and an upstream deflection absorbing movable belt roll having equal roll diameters, which are pivotally supported at the downstream upper part and the upstream lower lower part of the movable block, and the upstream deflection absorbing movable belt roll. The upstream side deflection absorbing/guiding belt roll is provided below the upstream side table movable belt roll and the upstream side deflection absorbing movable belt roll with its shaft position fixed at a predetermined position. and the conveyor belt is wound around the outside of the upstream table belt roll, the inside of the upstream deflection-taking movable belt roll, and the outside of the upstream deflection-taking and guide belt roll. The group of downstream belt rolls constituting the downstream conveyor includes a movable belt roll for the downstream table and a movable belt roll for downstream deflection having equal roll diameters, which are pivotally supported at the upper part of the movable table near the center and the lower part of the movable table towards the downstream. a belt roll, and a downstream deflection provided with the axis position fixed at a predetermined position below the movable belt roll for downstream deflection and between the movable belt roll for the downstream table and the movable belt roll for downstream deflection. The conveyor belt is configured to include a belt roll for taking and guiding, and a conveyor belt is provided outside the belt roll for the upstream side table, and inside the movable belt roll for taking up the downstream side deflection, and further includes the belt roll for taking up the downstream side deflection and the guide. The movable block moving means is wound around the outside of the belt roll for the upstream table, and the movable block moving means is configured to move the movable block moving means so that when the upper and lower heaters are closed, the movable belt roll for the upstream table is separated from the movable belt roll for the downstream table. When the movable block is moved and opened by the upper and lower heaters, the movable block is moved so that the upstream table movable belt roll approaches the downstream table movable belt roll. A belt conveyor for a box motion type heat-cutting sealing device of a horizontal bag-forming-filling-sealing machine, characterized by the following.