JPH07108689B2 - Box conveyor for horizontal bag-making filling / packing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a product unloading conveyor in a horizontal bag-making filling and packaging machine such as a horizontal pillow packaging machine, and more particularly to a belt conveyor incorporated in a box motion type heat fusion cutting and sealing apparatus. Regarding

[Prior Art and Problems Thereof] First, an outline of a conventional box motion type heat-sealing sealing device of a horizontal bag-making filling and packaging machine will be described. This device is designed so that the upper and lower heaters perform box motion. Here, the operation of the box motion will be described. With the upper and lower heaters opened vertically, the heaters are closed at the upstream position so as to be aligned with the registration mark of the wrapping paper, and the predetermined distance is moved in synchronization with the speed of the wrapping paper. It is an operation that opens up and down again at the downstream position and returns to the upstream position, and has the advantage that it takes more time to heat seal the wrapping paper than the rotary cutter.

There are various mechanisms for box-moving the upper and lower heaters. For example, both ends of the upper and lower heaters are attached to the connecting links of the double crank mechanism, or both ends of the upper and lower heaters are connected to the front cam ( There is a structure (for example, Japanese Utility Model Laid-Open No. 62-54910) in which a flat circular cam groove of a front cam is rotated by a crank while engaging with a groove cam).

The box motion of the upper and lower heaters means that, on the upstream side and the downstream side of the heater, a conveyor in which the table length is substantially changed in synchronism with the heater in close proximity to the heater is required. At
There are two types that are totally structural, and both are still in use today. One is an endless roller conveyor. That is, an endless transport chain is wound vertically to the left and right, a large number of rollers are hung on the transport chain, and the hangs of rollers are thinned out at regular intervals, so that the space below the thinned space is lower. The structure is such that the heater appears and disappears. The other one is a belt conveyor, in which a conveyor belt is wound around the belt conveying surface so that a gap is opened in the middle of the belt conveying surface and the gap reciprocates. It is a structure in which the heater on the side comes in and out.

The roller conveyor is cumbersome to assemble, generates a lot of noise, and there may be gaps between customers due to gaps between the rollers.However, the thinning space where the rollers are not suspended extends to the downstream end. Run away downwards,
Even if the packaged product is a short product, a small product, a heavy product, or a bulk product, the packaged product does not drop from the portion where the roller is not provided.

On the other hand, the belt conveyor operates quietly, but if the package is small, the package separated to the table surface on the downstream side when the lower heater is immersed in the gap in the middle of the belt transport surface. Since it has a problem of falling, it cannot be applied to the packaging of small articles. Therefore, there is a device in which when the lower heater is sunk from the table surface, the gap in the middle of the belt conveying surface is closed so that the heater can be applied to the packaging of small articles (Japanese Utility Model Publication No. 49-28133).

However, according to this invention, when operating at high speed, the lower heater rises faster, and the lower heater strongly repels the small roller that closes the gap in the middle of the belt conveying surface. Small rollers have low durability and require short-term replacement. It also becomes a source of noise. Further, since the small roller does not actively feed the packaged product, there is a limit to the size even if it can be used to package short products and small products. However, when it comes to small articles, there is still a problem that the packaged article falls into a gap in the middle of the belt conveying surface. Further, the bottom surface may be damaged depending on the type of the packaged object.

[PROBLEMS TO BE SOLVED BY THE INVENTION] The present invention is directed to lengthening the upstream belt transport surface and the downstream belt transport surface so as to match the reciprocating horizontal motion of the horizontal component of the box motion of the upper and lower heaters of the heat fusing and sealing apparatus. The upstream belt transport surface so that the gap between the upstream belt transport surface and the downstream belt transport surface is substantially eliminated when the lower heater is in the lowered position. Provide a belt conveyor for the box motion type heat-sealing sealing device of the horizontal bag-making filling and packaging machine that can be applied to the packaging of short products, small products, heavy products, etc. Is intended.

[Means for Solving the Problem] The belt conveyor for the box motion type heat fusing and sealing device of the horizontal bag-making filling and packaging machine according to the present invention is configured such that upper and lower heaters H1 and H2 are provided between the articles W and W to be packaged in the tube F to be packaged. It can be installed over the upstream and downstream sides of the box motion type heat fusion cutting and sealing device of the horizontal bag-filling and packaging machine that applies the end seal to the upstream side conveyor A and the upstream side conveyor B when the lower heater H2 rises. By the horizontal movement of the movable table 6 provided laterally of the movable table 6 which is horizontally movable along the conveyor conveying direction, the upstream table movable belt roll 2a and the downstream table movable belt roll 4a are moved to the lower heater. The belt conveyor for the box motion type heat-sealing and sealing device of the horizontal bag-making filling and packaging machine, which is designed to move horizontally with the lower heater H2 while being close to each other. In the above-mentioned upstream, the movable table 6 is provided with a movable block 7 that is horizontally movable independently of the movable table 6 along a conveyor conveying direction, and a movable block moving unit 8 that horizontally moves the movable block 7. The upstream belt roll group 2 that constitutes the side conveyor A includes an upstream table movable belt roll 2a and an upstream deflector movable movable table roll 2a, which have the same roll diameter and are axially supported at the downstream upper part and the upstream lower part of the movable block 7. Belt roll 2b and movable belt roll 2b for removing the upstream side deflection
A configuration including an upstream-side deflector-cum-guide belt roll 2c provided with a fixed axial position at a lower position and between the upstream-side table movable belt roll 2a and the upstream-side deflector movable-belt roll 2b. And the conveyor belt 1 is located outside the upstream table belt roll 2a, inside the upstream deflector movable belt roll 2b, and on the upstream deflector guide belt roll.
The downstream belt roll group 4 which is wound around the outside of 2c and constitutes the downstream conveyor B is for a downstream table having roll diameters which are axially supported by the upper part near the center and the lower part near the downstream of the movable table 6. Movable belt roll 4a and downstream side flexible belt roll 4b for flexure removal, and downstream side flexible belt roll 4b for flexure removal
A downstream deflector / guide belt roll 4c provided with a fixed axial position at a lower position and between the downstream table movable belt roll 4a and the downstream deflector movable belt roll 4b. And the conveyor belt 3 is located outside the upstream table belt roll 4a, inside the downstream flexure removing movable belt roll 4b, and further on the downstream flexure guide belt roll.
Each of the movable block moving means 8 is wound around the outside of 4c, and
When 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 When the movable block 7 is opened, the movable block 7 for the upstream side table is moved so that the movable block 7a for the downstream side table comes close to the movable belt roll 4a for the downstream side table.

[Operation] The movable belt roll 2a for the downstream table, which is close to the upstream side with respect to the lower heater H2, is configured as a double slide structure movable belt roll that prevents 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 are opened, the upstream table movable belt roll 2a is horizontally moved in the separating direction. Then, the gap between the downstream table movable belt roll 4a is opened, and when the heater is opened, the upstream table movable belt roll 2a horizontally moves in the proximity direction to close the gap, so that a short product or a small article. Accidents of dropped packages can be eliminated when packaging heavy items.

Hereinafter, each embodiment will be described within a range that does not overlap with the above description of [Means for solving the problem].

[First Embodiment ... Figs. 1 to 3] First, the configuration of a box motion type heat fusing and sealing apparatus of a horizontal bag-making filling and packaging machine in which a belt conveyor according to the present invention is incorporated will be described.

Trajectory X1 and X2 of a flat circle in which the upper and lower heaters H1 and H2 are vertically symmetrical
To be packaged in the tube F while performing the box motion
A two-row end seal (heat seal) is applied between W and W, and the cutter K incorporated in one of the heaters H1 (upper in the figure) pushes and slides when heat-sealing the heaters H1 and H2. The gap between the two end seals is cut. The box motion of the heaters H1 and H2 employs a groove cam (front cam) and a crank, but is not limited to this.

Next, the structure of the belt conveyor according to the present invention will be described.

The belt conveyor is configured such that the lower heater H2 is separated into an upstream conveyor A and a downstream conveyor B having two conveyor belts. Conveyor drive source 5
Is provided commonly to both conveyors A and B, and both conveyors A and B are driven at the same speed in the right direction in the drawing.

The upstream belt roll group 2 which constitutes the upstream conveyor section A is provided on the upper part with the upstream table movable belt roll 2a, which is provided so that the axial position is movable in the horizontal direction, and the axial position is fixed. There is a belt roll 2d for the upstream side table, and the conveyor belt 1 is stretched horizontally to form a transport surface, and a movable belt roll 2b for the upstream side flexure that is provided at the lower part so that the axial position is horizontally movable In both cases, the upstream side deflecting and guiding belt roll 2c and the upstream side driving belt roll 2e, which are provided with fixed axial positions, are provided.
Therefore, the conveyor belt 1 is stretched so as not to sag.

The downstream belt roll group 4 that constitutes the downstream conveyor unit B is provided with a fixed axial position and a downstream table movable belt roll 4a that is provided in the upper part so that the axial position is horizontally movable. There is a belt roll 4d for the downstream side table, the conveyor belt 3 is stretched horizontally to form the conveying surface, and a movable belt roll 4b for the downstream side flexure provided in the lower part so that the axial position is movable in the horizontal direction. In both cases, there is a downstream-side deflecting and guiding belt roll 4c and a downstream-side guiding belt roll 4e which are provided with fixed axial positions, and the conveyor belt 3 is stretched so as not to sag.

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

In both cases, the distance between the upstream deflector / guide belt roll 2c with the fixed axial position and the downstream deflector / guide belt roll 4c is the required distance so as not to interfere with the lower heater H2 that performs box motion. Open to.

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

And, the four movable belt rolls 2a, 2b, 4a, 4b,
The movable table 6 can perform reciprocating horizontal motion equal to the horizontal component of the box motion of the upper and lower heaters H1, H2,
Further, the movable belt rolls 2a and 2b do not interfere with the upper and lower heaters H1 and H2 due to the horizontal movement of the movable block 7, so that the movable belt rolls 2a and 2b can perform the horizontal movement according to the opening and closing of the upper and lower heaters H1 and H2. Has become.

More specifically, there are a pair of movable tables 6 on both sides of the conveyor, and each table comprises a horizontal guide 6a and a table body 6b guided by the horizontal guides 6a. The table body 6b includes upper and lower heaters H1 and H2. It is fixed to a heater guide member (not shown) that supports the upper and lower heaters H1 and H2 so that the upper and lower heaters can be opened and closed, and the horizontal component of the box motion of the upper and lower heaters H1 and H2. It is designed to make equal horizontal movements. Further, the table body 6b on each side has a block horizontal guide portion 61, and the movable block 7 is slidably fitted in the block horizontal guide portion 61, and the movable block 7 is connected to the upstream side. The table movable belt roll 2a and the upstream side deflecting movable belt roll 2b are supported at both ends, and the downstream table movable belt roll 4a and the downstream side deflecting movable belt roll 4b are respectively mounted on the movable table 6. Both ends are supported.

Then, both sides of the lower heater H2 and the movable block 7 on each side are connected by a movable block moving means 8, and the movable block 7 is interlocked with opening and closing of the upper and lower heaters H1 and H2.
Can be approached and separated. The movable block moving means 8 has a link 8a whose one end is pivotally attached to the movable block 7.
And a heater block HB having a long hole 81 having a long required length in the vertical direction and adapted to engage and guide the other end of the link 8a to the long hole 81 and which supports the lower heater H2. It consists of the long hole guide body 8b fixed to the side end, and when the upper and lower heaters H1 and H2 are opened, when the lower heater H2 descends so as not to interfere with the upstream table movable belt roll 2a, A pair of links 8a on both sides pulls the movable block 7, and the upstream table movable belt roll 2a moves to substantially form a gap between the upstream conveyor section A and the downstream conveyor section B. It can be lost.

Further, when the upper and lower heaters H1 and H2 are closed, a pair of links 8a on both sides project against the movable block 7 to move the block upstream, prior to this. Before the heater H2 rises, the upstream table movable belt roll 2a horizontally moves so that a gap can be secured again between the upstream conveyor section A and the downstream conveyor section B.

The upstream side movable belt roll 2a for the table is located on the downstream upper side of the movable block 7, and the upstream side deflecting movable belt roll 2b is located on the upstream lower side of the movable block 7, and In order that the movable belt roll 2b for side flexure is lower than the movable belt roll 2a for the upstream table by the height of one roll, both belt rolls 2a, 2b are provided with a pair of movable blocks 7 on both sides thereof.
Both ends are supported by the upstream side deflecting and guiding belt roll 2c, and the upstream side deflecting movable belt roll 2b is located below the upstream side deflecting movable belt roll 2b and the upstream table movable belt roll 2a and the upstream side deflecting movable belt roll 2b. The shaft position is fixed at a required position between 2b. And
The upstream side conveyor belt 1 is wound on the outside of the upstream table movable belt roll 2a, the upstream side deflecting movable belt roll 2b, and the upstream side deflecting and guiding belt roll 2c, respectively. Has been done.
Then, the conveyor belt portion between the belt contact of the upstream table movable belt roll 2a and the belt contact of the upstream deflecting movable belt roll 2b is stretched so as to be horizontal, and The conveyor belt portion between the belt contact of the upstream side deflecting movable belt roll 2b and the upstream side deflecting and guiding belt roll 2c is stretched so as to be horizontal, and therefore the movable block 7 The upstream conveyor belt 1 does not sag even when the horizontal conveyor moves.

Similarly, the movable belt roll 4a for the downstream table is located above the central portion of the movable table 6, and the movable belt roll 4b for deflecting the downstream side is located below the movable table 6 toward the downstream side. Further, the downstream side deflecting movable belt rolls 4b are lower than the downstream side table movable belt rolls 4a by the height of one roll, so that both belt rolls 4a and 4b have a pair of movable tables on both sides thereof. 6 is supported at both ends, and the downstream side deflecting and guiding belt roll 4c is below the downstream side deflecting movable belt roll 4b, and is located on the downstream side table movable belt roll 4a and the downstream side deflectable belt. It is provided with a fixed axial position at a required position between the rolls 4b. Then, the downstream conveyor belt 3 is provided outside the movable table roll 4a for the downstream table, inside the movable belt roll 4b for the downstream flexure, and further outside the flexible belt guide 4c for the downstream flexure and guide. Each is wrapped. Then, the conveyor belt portion between the belt contact of the downstream table movable belt roll 4a and the belt contact of the downstream deflecting movable belt roll 4b is stretched so as to be horizontal, and The conveyor belt portion between the belt contact of the downstream deflector movable belt roll 4b and the belt contact of the upstream deflector / guide belt roll 4c is stretched so that it is horizontal. Even if it moves horizontally, the downstream conveyor belt 3 does not sag.

Next, the operation will be described.

The movable block 7 is mounted on the movable table 6 that performs reciprocating horizontal motion equal to the horizontal component of the box motion of the upper and lower heaters H1 and H2, and when the upper and lower heaters H1 and H2 are closed, the lower block is connected to the lower heater H2. It moves horizontally so as not to interfere, and when the upper and lower heaters H1 and H2 open, the gap between the heaters is closed, so the upper and lower heaters H1 and H2 approach the upstream position of the box motion. If it is going to be closed, the lower heater H2
Movable belt roll for upstream table with the upper side closed
2a will open so as not to interfere with the lower heater H2, and then move to the downstream position of the box motion while being closed by the upper and lower heaters H1 and H2. Will move horizontally while maintaining close proximity to the upstream side of the lower heater H2, and when the upper and lower heaters H1 and H2 reach the downstream position of the box motion and open, the upstream side The movable belt roll 2a for the table is closed immediately after the lower heater H2 is lowered so as not to interfere with the lower heater H2, and subsequently, in the state where the upper and lower heaters H1 and H2 are opened. When moving to the upstream position of the box motion, the upstream table movable belt roll 2a moves horizontally while maintaining a state close to the downstream table movable belt roll 4a.

In the above case, the upstream conveyor unit A is configured such that the axial distance between the upstream table movable belt roll 2a and the upstream deflector movable belt roll 2b does not change, and the upstream table movable belt roll 2a and the upstream table Belt roll 2d changes in axial distance and upstream side movable belt roll for flexure removal
2b and the change in the axial distance between the upstream side deflector / guide belt roll 2c cancel each other, so the movable table 6
Further, the upstream conveyor belt 1 does not loosen the winding regardless of the position of the movable block 7, and the downstream conveyor section B includes the downstream table movable belt roll 4a and the downstream side flexible belt movable belt roll. 4b does not change the inter-axis distance, and the change in the inter-axis distance between the movable belt roll 4a for the downstream table and the belt roll 4d for the downstream table and the movable belt roll 4b for the downstream flexure and the downstream flexure guide Since the change in the distance between the axes of the belt belt roll 4c for use is offset, the downstream conveyor belt 3 does not slacken at any position of the movable table 6, so that the upper and lower heaters H1, H2 The lengths of the belt conveying surface of the upstream conveyor unit A and the belt conveying surface of the downstream conveyor unit B are changed so as to match the reciprocating horizontal motion of the horizontal component of the box motion. Not further, as the gap between the upstream-side conveying surface and a downstream conveying surface when the lower heater is in the lowered position substantially eliminated,
The length of the belt conveying surface of the upstream conveyor section AT changes, and the belt reversely feeds the product when the gap between the upstream conveyor section A and the downstream conveyor section B is created or eliminated. In addition, the fall accident of the packaged product can be eliminated when packaging short products, small products, valuables and the like.

[Second Embodiment ... FIGS. 4 to 6] In this embodiment, only the points different from the first embodiment will be described, and the same components will be denoted by the same reference numerals as in the first embodiment.

The belt conveyor of this embodiment includes one endless conveyor belt 9 and the lower heater H2 so that the conveyor belt 9 bypasses the lower heater H2.
An upstream belt roll group 10 and a downstream belt roll group 11 in which a conveyor belt 9 is stretched so as to form an upstream conveyor A'and a downstream conveyor B'on the upstream side and the downstream side.
And a conveyor drive source 12.

The upstream belt roll group 10 has an upper table movable belt roll 10a that is provided movably in the axial position in the horizontal direction and an upstream table belt roll 10d that is provided with the axial position fixed at the top. A conveyor belt 9 is stretched horizontally to form a conveying surface, and further, an upstream deflecting movable belt roll 10b is provided below the two rolls so that the axial position thereof is movable in the horizontal direction. Upstream-side deflecting and guiding belt roll 10c provided with a fixed axial position, and upstream-side guiding belt roll 10e
~ 11h and drive belt roll 10i.

Further, the downstream belt roll group 11 has, on the upper part thereof, a downstream table movable belt roll 11a which is provided so that its axial position is movable in the horizontal direction, and a downstream table belt roll 11d which is provided with its axial position fixed. A conveyor belt 9 is stretched horizontally to form a conveying surface, and further, a downstream deflectable movable belt roll 11b provided movably in the horizontal direction below the two rolls has an axial position. Belt rolls 11c for fixing and guiding the downstream side and belt rolls 11e to 11 for upstream guides
There is g and.

The guide belt rolls 10e, 10f, 11e, 11f are stretched around the conveyor belt 9 under the lower heater H2 so as to bypass the inner circumference.
Wraps the conveyor belt 9 under the lower heater H2 around the outer periphery to make a detour, and the guide belt roll 10h is a belt roll 10i for driving the conveyor belt 9.
It is stretched around so that the center angle of wrapping around it becomes larger.

The four movable belt rolls 10a, 10b, 11a, 11b all have the same diameter. Belt roll for upstream deflection and guide
The distance between 10c and the belt roll 11c for deflecting and guiding on the downstream side is set to a required distance so as not to interfere with the lower heater H2 that performs box motion.

As the conveyor drive source 12, a motor is directly connected to the drive belt roll 10i.

Then, as in the first embodiment, the four movable belt rolls 10a, 10b, 11a, 11b are reciprocated horizontally by the movable table 6 and are equal to the horizontal component of the box motion of the upper and lower heaters H1, H2. In addition to the horizontal movement of the movable block 7, the horizontal movement of the upper and lower heaters H1 and H2 can be performed without interfering with the upper and lower heaters H1 and H2 by the horizontal movement of the movable block 7.

In addition, the correlation between the movable belt rolls 10a, 10b and 10c is the same as the correlation between the movable belt rolls 2a, 2b and 2c shown in FIG. 1, and the correlation between the movable belt rolls 11a, 11b and 11c is shown in FIG. The movable belt rolls 4a, 4b and 4c have the same correlation.

Therefore, the belt conveyor is a single conveyor belt 9
Is characterized in that the upstream side conveyor A'and the downstream side conveyor B'are formed by bypassing the lower side of the lower heater H2.

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

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

(2) As the movable block moving means 8, a linear actuator is attached on the upstream side 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 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 attached to the movable block 7 on each side so as to mesh with the pinion. A vertical rack that meshes with the pair of pinions may be provided by one of the upper and lower heaters H1 and H2 so that the pair of horizontal racks can be horizontally moved.

(4) The movable block 7 is used as the movable block moving means 8.
Each of them is provided with a cam follower, and a cam plate having a cam groove for guiding the cam follower is attached to the upper and lower heaters H1, H2.
Attach to one of the side ends of the upper and lower heaters H1, H2
When is opened and closed, the movable block 7 may be horizontally movable by the guiding action of the cam plate with respect to the cam follower.

[Effects of the Invention] As described above, according to the belt conveyor for the box motion type heating and fusing device of the horizontal bag-making filling and packaging machine of the present invention, the upstream table that is closer to the lower heater than the upstream table is. Belt roll or conveyor belt is supported as a double slide structure movable belt roll that does not sag, and the other downstream table belt roll is a slide structure that does not sag the conveyor belt. The structure is supported so as to form a belt roll, and two movable belt rolls for a table, which are close to the heater on the lower side from the upstream side and the downstream side, respectively, serve as a horizontal component of the box motion of the upper and lower heaters. Not only can the same horizontal movement be performed, but the movable belt roll for the upstream table can also be used as a heater when the heater is opened. Do not interfere away from the downstream possible for side table belt rolls so, and since the time of the heater occlusion approaches, heavy weight short article,
Even if it is a small item, it will fall between the belt rolls,
It can pass well between belt rolls without falling,
It is possible to realize a horizontal bag-making filling and packaging machine suitable for packaging short-sized products, small products, heavy products, and the like.

[Brief description of drawings]

1 to 3 relate to a first embodiment of a belt conveyor for a box motion type heating, melting and sealing apparatus of a horizontal bag-making filling and packaging machine of the present invention, and FIG. 1 shows an upstream conveyor with upper and lower heaters open. 2 is a cross-sectional view showing a state in which the heater extends to close the gap with the downstream conveyor, and FIG. 2 shows that the heater moves to the upstream position and the upstream conveyor shrinks to open the gap with the downstream conveyor. FIG. 3 is a cross-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 upper and lower heaters are closed, and the upstream conveyor is contracted and the gap between the downstream conveyor is opened. It is sectional drawing which shows the state horizontally moved to the downstream position. 4 to 6 relate to a second embodiment of a belt conveyor for a box motion type heat fusing and sealing apparatus of a horizontal bag-making filling and packaging machine of the present invention, and FIG. 4 shows an upstream conveyor with upper and lower heaters open. Is a cross-sectional view showing a state in which the heater extends to close the gap with the downstream conveyor, and FIG. 5 shows that the heater moves to the upstream position and the upstream conveyor contracts to open the gap with the downstream conveyor. FIG. 6 is a cross-sectional view showing a state in which the upper and lower heaters are closed and horizontal sealing is started after the heating, and FIG. 6 shows that the upper and lower heaters are closed and the upstream conveyor is contracted and the gap between the downstream conveyor is opened. It is sectional drawing which shows the state horizontally moved to the downstream position. H1, H2 …… Upper and lower heaters, F …… Cylinder to be wrapped, W …… Item to be wrapped, A …… Upstream conveyor, B …… Downstream conveyor, 1 …… Upstream conveyor belt, 2 …… Upstream side Belt roll group, 2a …… Movable belt roll for upstream table, 2b …… Movable belt roll for upstream flexure, 2c …… Upstream flexure and guide belt roll, 3 …… Downstream conveyor belt, 4… … Downstream belt roll group, 4a …… Movable belt roll for downstream table, 4b …… Movable belt roll for downstream flexure, 4c …… Downstream deflector / guide belt roll, 5 …… Conveyor drive source, 6 ... movable table, 7 ... upstream movable block, 8 ... movable block opening / closing means, 9 ... conveyor belt, A '... upstream conveyor, B' ... downstream conveyor, 10 ... upstream belt row Group, 10a …… Moveable belt roll for upstream table, 10b …… Moveable belt roll for upstream flexure, 10c …… Upstream flexure and guide belt roll, 11 …… Downstream belt roll group, 11a …… Movable belt roll for downstream table, 11b …… Movable belt roll for downstream flexure, 11c …… Downstream deflector / guide belt roll, 12 …… Conveyor drive source,

Claims (1)

[Claims] 1. A box motion type heating and fusing and sealing device for a horizontal bag-making filling and packaging machine for performing end-sealing between articles to be packaged by upper and lower heaters, which can be incorporated on both upstream and downstream sides, When the heater on the side is raised, the movable table for the upstream table and the movable belt roll for the downstream table is provided by the horizontal movement of the movable table, which is provided over the upstream conveyor and the downstream conveyor and is horizontally movable along the conveyor conveying direction. Movable belt roll, in proximity to the lower heater, respectively, in the box motion type heating fusing and sealing device belt conveyor of a horizontal bag-making filling and packaging machine, which is adapted to move horizontally with the lower heater, A movable block which is provided on the movable table and is horizontally movable independently of the movable table in the conveyor conveying direction; A movable block moving means for horizontally moving the moving block, and the upstream belt roll group constituting the upstream conveyor has an upstream table having roll diameters which are axially supported by a downstream upper portion and an upstream lower portion of the movable block. Movable belt roll band for use in upstream bending, and at a required position below the upstream movable belt roll for bending and between the upstream table movable belt roll and the upstream bending movable belt roll. It is configured to include an upstream side deflecting and guiding belt roll that is provided with a fixed axial position, and a conveyor belt is provided outside the upstream table bruth roll and on the upstream side deflecting movable belt roll. Inside, further wound around the upstream side deflecting and guiding belt roll, respectively, the downstream side The downstream belt roll group constituting the conveyor includes a downstream table movable belt roll and a downstream side deflecting movable belt roll having the same roll diameter, which are axially supported by the central upper portion and the downstream lower portion of the movable table, Downstream deflector / guide belt roll provided with a fixed axial position below the downstream deflector movable belt roll and between the downstream deflector movable belt roll and the downstream deflector movable belt roll. And a conveyor belt outside the belt roll for the upstream table, inside the movable belt roll for deflecting the downstream side, and further outside the deflecting and guiding belt roll for the downstream side. Each of the movable block moving means is wound around the upstream side table when the upper and lower heaters are closed. When the movable block is moved so that the movable belt roll for the table is separated from the movable belt roll for the downstream table, and when the upper and lower heaters are opened, the movable table roll for the upstream table is for the downstream table. A belt conveyor for a box motion type heat fusing and sealing device of a horizontal bag-making filling and packaging machine, characterized in that the movable block is moved so as to be close to the movable belt roll.