JPH1072006A - Packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize much greater freedom of layout, etc., of conveying equipment for a packaged article as to a carry-in conveyor by constructing the carry-in conveyor of a carry-in mechanism extending long in the left and right directions, the packaged article is carried in from each side part of the carry-in conveyor and is carried out at a right angle from the center part of the carry-in conveyor. SOLUTION: Plurality of bundled and piled up articles to be packaged are placed on each end part of the carry-in conveyor of a carry-in mechanism 10 and are conveyed to the center part of the same. Then the same is conveyed by a carry-out conveyor in a direction making right angles with the carry-in conveyor and is conveyed in the direction of the carry-out conveyor of the carry-in mechanism while the same is compressed by an upper carry-out conveyor 21 and a lower carry-out conveyor 22 of a carry-out mechanism 20. At this time, by an upper packaging film feeding mechanism 30 and a lower packaging film feeding mechanism 40, a packaging film 71 is fed between the carrying in mechanism 10 and the carry-out mechanism 20, the article to be packaged is covered with the packaging film 71, and the packaging film 71 is mutually heat sealed by a horizontal seal mechanism 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a plurality of bundles of newsprint,
The present invention relates to a packaging machine for packaging an object to be packaged in which a plurality of weekly magazines and the like are stacked.

[0002]

2. Description of the Related Art Newspapers, magazines and the like are packed in a packaging film in a state where a plurality of copies are stacked for transport to a store or the like. For this purpose, a packaging machine is used in which a plurality of sets of newspapers and the like are stacked and the packaging film is wrapped with a packaging film and the packaging film is sealed.

[0003] The packaging machine is configured to carry a carry-in conveyor into which the goods to be packaged are carried, a lower carry-out conveyor for carrying the goods to be carried by the carry-in conveyor in the same direction, and a package to be carried by the lower carry-out conveyor. And an upper discharge conveyor for compression. The carry-in conveyor, the lower carry-out conveyor and the upper carry-out conveyor are configured to convey articles to be packaged linearly in the same direction, and the packing film is unreeled from above and below between the carry-in conveyor and the carry-out conveyor. And sealed. When the article to be packaged is transferred from the carry-in conveyor to the lower carry-out conveyor, it becomes covered with the packaging film, and is compressed by the upper carry-out conveyor while being conveyed by the lower carry-out conveyor. Then, each packaging film covering the article to be packaged is sealed by a sealing mechanism.

[0004]

In such a packaging machine, the articles to be packaged can be carried in only linearly from the upstream side in the carrying direction of the carrying-in conveyor. For this reason, there is a problem that the layout and the like of the transport conveyor for supplying the packaged articles to the packaging machine are limited. Also, in the case where different types of packaged goods are successively carried into the carry-in conveyor, if the packaged goods that do not need to be packed are transported, the packaged goods must be manually removed from the carry-in conveyor. In addition, there is a problem that the operation is troublesome. Furthermore, since the packaging film for packaging the packaged object needs to be unwound from below and above the packaged product to be conveyed, the packaging film roll in which the packaging film is wound in a roll shape is moved from the packaged product to the packaged film. Also need to be supplied upwards. However, there is also a problem that it is not easy to manually lift a heavy packaging film roll to a high position.

The present invention has been made to solve such a problem, and an object of the present invention is to increase the freedom of layout of a conveyer for transporting articles to be carried in with respect to a carry-in conveyor, and to provide an article to be packaged which does not require packaging. An object of the present invention is to provide a packaging machine that can easily remove an article to be packaged without being packed even if the article is carried in. Another object of the present invention is to provide a packaging machine capable of easily supplying a packaging film roll to a position above an article to be packaged.

[0006]

A packing machine according to the present invention is characterized in that a plurality of bundles are stacked on each end of a carry-in conveyer and conveyed to a central portion thereof. A loading mechanism in which the packaged material transported to the central portion of the carry-in conveyor is transported by the carry-out conveyor in a direction orthogonal to the carry-in conveyor, and a packaged material carried out by the carry-out conveyor of the carry-in mechanism, While being compressed by the carry-out conveyor and the lower carry-out conveyor, a carry-out mechanism for carrying in the same direction as the carry-in / out conveyor of the carry-in mechanism, and a pay-out mechanism for feeding the packaging film between the carry-in mechanism and the carry-out mechanism. The upper wrapping film feeding mechanism and the lower wrapping film feeding mechanism and the upper wrapping film feeding mechanism and Respectively the packaging film together drawn out by the fine lower the packaging film feeding mechanism,
And a sealing mechanism for mutually heat-sealing.

[0007] The carry-in mechanism is provided with a pair of positioning members for abutting on the goods to be carried in by the carry-in conveyor and positioning the goods to be packaged at the center of the carry-in conveyor.

[0008] The loading mechanism is provided with a compression member for compressing the article to be packaged positioned at the center of the loading conveyor by each positioning member.

[0009] The height of compression of the article to be packaged by the compression member can be detected.

[0010] The upper carry-out conveyor of the carry-out mechanism can compress the articles to be packed to a height higher than the compression height of the compression member.

A packaging film lift mechanism for supplying a packaging film roll to the upper packaging film feeding mechanism is further provided.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view showing an example of an embodiment of a packaging machine according to the present invention, and FIG. 2 is a side view thereof. This packaging machine is, for example, a loading mechanism 10 that loads articles to be packed in which a plurality of sets of newspapers are stacked from each of the left and right sides, and a direction in which the articles to be loaded by the loading mechanism 10 are loaded is orthogonal to the loading direction. Unloading mechanism 2 for unloading in the direction
0 (see FIG. 2), an upper wrapping film feeding mechanism 30 and a lower wrapping film feeding mechanism 40 for feeding the wrapping film from above and below, respectively, with respect to the articles transported from the loading mechanism 10 to the discharging mechanism 20.
And heat-seal the packaging film that has been fed by the upper wrapping film feeding mechanism 30 and the lower wrapping film feeding mechanism 40 and wraps the packaged object.
It has a horizontal heat seal mechanism 50 provided between the carry-in mechanism 10 and the carry-out mechanism 20.

As shown in FIG. 1, the packaging machine is provided with a vertical support frame 61 constituting a vertically long rectangular frame.
A lower frame 62 is supported horizontally on the support frame 61 at a position closer to the lower side toward the front. The carrying-in mechanism 10 is provided on the lower gantry 62.
The support frame 61 includes a pair of vertical frame members 61a and an upper horizontal frame member 61.
b and a lower horizontal frame member 61c (see FIG. 2), a rectangular frame is formed, and a bottom frame 63 installed on the floor is horizontally provided in front of the lower horizontal frame 61c. The lower wrapping film feeding mechanism 40 is supported on the bottom frame 63. Further, the support frame 61 supports an upper frame 64 in a horizontal state facing the lower frame 62 at a position closer to the upper side at an appropriate distance from the lower frame 62. The upper wrapping film feeding mechanism 30 is supported by 64.

A front vertical frame 67 is provided vertically between one of the front ends of the lower frame 62 and one of the front ends of the upper frame 64. Further, a packaging film lift mechanism 90 (see FIG. 2) for lifting the preliminary packaging film roll 72 to the upper packaging film feeding mechanism 30 is attached.

FIG. 3 is an enlarged plan view showing a main part of the loading mechanism 10, FIG. 4 is a front view thereof, and FIG. 5 is a side view thereof. The carry-in mechanism 10 has a pair of carry-in conveyors 11 each extending along the left-right direction. Each carry-in conveyor 11 is configured such that a carry-in belt 11b is wound around a pair of pulleys 11a installed on a lower gantry 62, and the carry-in belts 11b are parallel to each other at an appropriate interval. It is in a state. The carry-in belt 11b of each carry-in conveyor 11 is integrally and revolved in the forward and reverse directions synchronously by a carry-in motor 12 positioned below one end. The carry-in motor 12 is installed on the lower gantry 62. The articles to be packaged are placed on each end of each carry-in conveyor 11, and are conveyed by the carry-in conveyor 11 to the central part thereof.

At the center of the upper surface of each carry-in belt 11b on which the article to be packaged is placed, an elevating guide 15 for pushing up the central portion of each carry-in belt 11b is arranged. Each elevating guide 15 is provided for the loading conveyor 1
1, and is integrally lifted and lowered by a lifting air cylinder 16 disposed below each end. Each elevating guide 15 is raised so that the central portion of each carry-in conveyor 11 is located above each end portion.

An unloading conveyor 14 is provided at the center of the loading conveyor 11. This unloading conveyor 1
Numeral 4 has a pair of central unloading rollers 14a which are parallel to each of the carry-in conveyors 11 at the center of each of the carry-in conveyors 11. In addition, these unloading rollers 14
In the figure, the side discharge rollers 14b are provided in parallel with each of the carry-in conveyors 11 with the central portion of each of the carry-in conveyors 11 interposed therebetween, and the lower discharge rollers 14c (see FIG. 5) are provided in parallel. Further, below the central portion of each carry-in conveyor 11, a lower central carry-out roller 14d shorter than each central carry-out roller 14a is provided in parallel with each other. An unloading belt 14e is wound around these unloading rollers 14a to 14d. The unloading belt 14e is a pair of central unloading rollers 1
4a so as to pass above the transport rollers 4a to 4a.
It is arranged at the center of 14d.

One lower central discharge roller 14d disposed below each of the import conveyors 11 is configured to be rotationally driven by a discharge motor 17 provided on the side of the lower central discharge roller 14d. By the rotation drive, the carry-out belt 14e is moved around.

As described above, when each of the elevating guides 15 is raised, the center of each of the carry-in conveyors 11 is located above the upper surface of the carry-out belt 14e. Conversely, when each lifting guide 15 descends, the upper surface of the carry-in conveyor 11 is at the same level as the upper surface of the carry-out belt 14e. The articles to be packaged placed on the end of each carry-in conveyor 11 are conveyed to the central part of each carry-in conveyor 11 with the central part of each carry-in conveyor 11 raised, and the central part of each carry-in conveyor 11 is moved. Is lowered, the article to be packaged is placed on the carry-out belt 14e. Then, the article to be packaged is moved by the orbiting of the carry-out belt 14e.
The sheet is conveyed in the direction indicated by arrow B in FIGS.

FIG. 6 is a plan view of a main part of a front side of the loading mechanism 10 (a side opposite to the direction in which the packaged product is carried out). As shown in FIG. 5 and FIG.
e, a pair of positioning members 18 for stopping the articles to be carried in by the carry-in conveyor 11 on the carry-out conveyor 14 at the front side opposite to the carry-out direction of the goods to be carried out.
Is provided. Each positioning member 18 has an arm 18a whose center end is rotatably supported at the center of the carry-in conveyor 11 at an appropriate interval along the carry-in conveyor 11. Each arm 18a
It has a vertical flat plate shape, and is disposed so as to be longer in the horizontal direction at a position slightly above the discharge belt 14e. The base end of each arm 18a is provided with a support shaft 18b which is vertically installed at an appropriate interval along the carry-in conveyor 11.
Is rotatably supported. The lower end of a vertically long plate-like contact plate 18c is attached to the tip of each arm 18a, and each contact plate 18c is supported in a vertical state.

Below each arm 18a, each arm 18
Rotating air cylinders 18d that are substantially parallel to a are arranged. Air cylinder 18 for each rotation
d is horizontally arranged at a position slightly higher than the carry-out belt 14e, and the distal end of the piston rod is
a, respectively. The base end of each rotation air cylinder 18d is rotatably supported outside the base end of each arm 18a. As the piston rod advances, the respective abutting plates 18c of the respective rotating air cylinders 18d face each other with the carry-out belt 14e interposed therebetween at the center of the carrying area of the pair of carry-in conveyors 11. Conversely, each air cylinder 18 for rotation
When the piston rod d comes into the retracted state, each contact plate 18c is located along the carry-in conveyor 11 on the side of the transported area of the carry-in conveyor 11 respectively.

Between the positioning members 18, there is provided a compression member 19 for pressing the articles to be conveyed by the carry-in conveyor 11. The compression member 19 is connected to each arm 18.
a between the respective support shafts 18b that support the base end of
It has a pair of slide shafts 19a vertically installed at appropriate intervals along the carry-in conveyor 11. As shown in FIG. 5, the lower end of each slide shaft 19a is
1 is supported by a housing 65 mounted on the lower frame 62, and the upper end of each slide shaft 19 a is mounted on an upper frame 64 of the support frame 61. A slider 19b is slidably fitted to each slide shaft 19a.
c is supported in a horizontal state.

A lower pulley 19d is rotatably mounted on the housing 65 on which the lower end of each slide shaft 19a is supported.
An upper pulley 19e is rotatably attached to the upper gantry 64 on which the upper end of the slide shaft 19a is supported, near the upper end of each slide shaft 19a. The lower pulley 19d and the upper pulley 19e facing each other
, A lifting belt 19f is wound around each. Each slider 19b that slides along the slide shaft 19a is attached to each lifting belt 19f.

As shown in FIG. 6, each lower pulley 19d
Are attached to the respective ends of one rotating shaft 19g, and the rotating shaft 19g is configured to be rotated by a lifting servomotor 19h. And
When the lifting servomotor 19h is rotationally driven, the respective lower pulleys 19d are rotated in synchronization, and the respective lifting belts 19f are rotated in synchronization. This allows
Slider 19b attached to each lifting belt 19f
Are raised and lowered in synchronization with each other, whereby the compression plate 19c is raised and lowered in a horizontal state.

The elevation servomotor 19h has a built-in encoder, and the encoder detects the height position of the compression plate 19c, that is, the compression height of the part to be packaged by the compression plate 19c. I have.

As shown in FIG. 2, the lower wrapping film feeding mechanism 40 provided on the lower frame 62 has a pair of support rollers 41 for supporting the wrapping film roll 72 by winding the wrapping film 71 in a roll shape. doing. Each support roller 41 is arranged below the central portion of the carry-out belt 14e in the carry-out direction of the packaged object, in a state orthogonal to the carry-out direction. Further, a support 42 that supports a spare packaging film roll 72 is arranged in a direction opposite to the direction in which the packaged articles are carried out of the support rollers 41. The support base 42 supports the spare packaging film roll 72 in a state parallel to the packaging film roll 72 supported by the support roller 41, and places the supported spare packaging film roll 72 on the support roller 41. The upper part is tilted so as to roll.

The packaging film 71 of the packaging film roll 72 supported by the support rollers 41 is pulled out obliquely upward and forward, passes below the loading mechanism 10 in the unloading direction, and passes through the rear end of the loading mechanism 10. After being bent downward at the lower side of the section, the direction is reversed, and a pair of pinch rollers 4 provided behind the loading mechanism 10.
3 sandwiched.

The upper wrapping film feeding mechanism 30 provided on the upper gantry 64 has a pair of support rollers 31 for supporting the wrapping film roll 72 by winding the wrapping film 71 in a roll shape. Each support roller 31
The lower portion of the carry-out belt 14e in the central portion in the carry-out direction of the packaged object is arranged orthogonal to the carry-out direction. Further, a support table 32 for supporting a spare packaging film roll 72 is disposed in a direction opposite to a direction in which the support roller 31 unloads the packaged object. The support base 32 supports the spare packaging film roll 72 in a state parallel to the packaging film roll 72 supported by the support roller 31 and places the supported spare packaging film roll 72 on the support roller 31. The upper part is tilted so as to roll.

The wrapping film 71 of the wrapping film roll 72 supported by the support rollers 41 is pulled out obliquely upward and forward, is bent along the unloading direction, and is above the rear end of the loading mechanism 10. After being bent downward, it is bent upward and downward, respectively,
It is pinched by a pair of pinch rollers 33 provided behind the loading mechanism 10.

FIG. 7 shows a packaging film lift mechanism 90 provided in a direction opposite to the direction in which the packaged object is unloaded by the loading mechanism 10.
FIG. 8 is a front view thereof. The packaging film lift mechanism 90 has a support frame 93 that is raised and lowered in a horizontal state along the front side surface of one front vertical frame 67. The support frame 93 has a slider 92 attached to one end thereof and a guide rail 9 provided vertically along the front side surface of the front vertical frame 67.
1 is slidably engaged in a cantilevered state.

The upper base 6 close to the front vertical frame 67
4 is provided with an upper sprocket 97a, and a lower gantry 62 facing the upper sprocket 97a is provided with a lower sprocket 97b. The upper sprocket 97a is rotated by a motor 98 attached to the upper gantry 64. A chain 99 is wound around the upper sprocket 97a and the lower sprocket 97b, and a slider 92 is attached to the chain 99. Therefore, by the forward and reverse rotation of the motor 98,
When the chain 99 is moved up and down, the slider 92 is moved up and down to move the support frame 93 from the lower frame 62 to the upper frame 6.
It is raised and lowered to 4.

A receiving member 94 for supporting each side of the packaging film roll 72 is attached to the support frame 93, and each receiving member 94 supports the packaging film roll 72 in a horizontal state. . A horizontal rod 96 is provided between the receiving members 94. Each holder 94
Are inclined such that the supported packaging film roll 72 rolls toward the front vertical frame 67 side.

A horizontal rod 96 is provided between the receiving members 94. At each end of the horizontal rod 96 near each receiving member 94, a packaging film roll 72 supported by each receiving member 94 is provided. And a stopper 95 for preventing rolling on the front vertical frame 67 side. Each stopper 95 is normally urged so that the packaging film roll 72 supported by each receiver 94 does not roll. An air cylinder 96a vertically supported by the upper gantry 64 is attached to the horizontal rod 96. The air cylinder 96a causes the horizontal rod 96 to rotate in a direction opposite to the biasing direction of each stopper 95. It is supposed to be. Thereby, each receiving tool 9
The packaging film roll 72 supported by 4 is rolled toward the upper packaging film feeding mechanism 30 side.

FIG. 9 is a front view of a horizontal seal mechanism 50 provided on the side of the carry-in mechanism 10 in the carry-out direction of the packaged object, and FIG. 10 is a side view thereof. This horizontal sealing mechanism 50 is
It has a horizontal up-and-down upper frame 51 arranged so as to be able to go up and down along each vertical frame member 61a. A guide rail 53 is provided on a front side surface of the vertical frame member 61 a of the support frame 61.
Are mounted vertically. Sliders 52 are attached to the respective ends of the elevating upper frame 51, and the respective sliders 52 are slidably engaged with the respective guide rails 53. An upper holding plate 54 horizontally arranged along the lower surface of the elevating upper frame 51 is horizontally attached to the elevating upper frame 51 while being urged downward. The upper pressing plate 54 is heated by a heater. The elevating upper frame 51 is adapted to be raised and lowered by an air cylinder 55 vertically supported by an upper horizontal frame member 61b of the support frame 61.

An air cylinder 54a is horizontally supported on the upper pressing plate 54, and a cutter (not shown) is provided so as to be slidable in the horizontal direction by the air cylinder 54a. This cutter is slid in the horizontal direction by the air cylinder 54a, so that the cutter protrudes downward.

Below the up-down frame 51, a horizontal up-down frame 56 is arranged so as to be able to go up and down. Sliders 57 are also attached to the respective ends of the elevating frame 56, and the respective sliders 57 are slidably engaged with the guide rails 53 engaged with the respective sliders 52 of the elevating upper frame 51. ing. A lower holding plate 58 that is horizontally arranged along the upper surface of the elevating frame 56 is horizontally attached to the elevating frame 56. The lower holding plate 58 is also heated by the heater. Elevating frame 56
Is raised and lowered by a pair of air cylinders 59 vertically supported by the lower horizontal frame member 61c of the support frame 61.

The horizontal sealing mechanism 50 is configured such that the packaging film 71 fed by the upper packaging film feeding mechanism 30 and the packaging film 71 fed by the lower packaging film feeding mechanism 40 are heated by the upper pressing plate 54 in a heated state. By pressing each other with the lower holding plate 58, they are heat-sealed with each other, and the heat-sealed portion is bisected in the horizontal direction by the cutter.

The unloading mechanism 20 is provided on the side of the horizontal seal mechanism 50 in the package unloading direction. FIG. 11 is a rear view of the unloading mechanism 20, and FIG. 12 is an enlarged side view of a main part thereof. The unloading mechanism 20 includes a lower unloading conveyor 21 supported on a lower frame 62 of a support frame 61 and a lower unloading conveyor 2
Upper conveyer 2 which can be moved up and down above 1
And 2.

The lower unloading conveyor 21 is arranged in the unloading direction of the loading mechanism 10 via the horizontal sealing mechanism 50 and extends rearward with respect to the lower gantry 62 attached to the support frame 61. Carriage 6 supported horizontally
5 is attached. At the end of the lower unloading conveyor 21 on the loading mechanism 10 side, the unloading conveyor 1 of the loading mechanism 10 is attached.
The articles to be conveyed by the cartridge 4 are placed thereon. The lower unloading conveyor 21 is driven by an unloading motor 21 a attached to the unloading gantry 65, and transports the packaged articles placed on the end of the lower unloading conveyor 21 in the rear side direction. It is supposed to.

The upper carry-out conveyor 22 is supported by a carry-out elevating frame 24 that is horizontally mounted on the back side of the support frame 61 so as to be slidable in the vertical direction. A slider 24a is attached to each end of the carrying-out elevating frame 24, and each slider 24a is slidable on each guide rail 25 provided on the back side surface of each vertical frame 61a of the support frame 61. Is engaged. The upper carrying-out conveyor 22 is provided with the carrying-out elevating frame 2.
4 is supported along the lower surface of the lower unloading conveyor 21 from the lower position close to the lower unloading conveyor 21 to the upper position not in contact with the articles placed on the lower unloading conveyor 21 by the lifting and lowering of the unloading elevating frame 24. To rise up.

An unloading elevating motor 23 is attached to the unloading elevating frame 24. The unloading elevating motor 23 causes the lower surface of the upper unloading conveyor 22 to move.
It is configured to be driven in the same direction as the transport direction of the packaged articles by the lower unloading conveyor 21.

On the upper frame 64 of the support frame 61, an elevating servomotor 26 for raising and lowering the unloading elevating frame 24 is provided. The output of the lifting servomotor 26 is transmitted to a rotating shaft 27 provided horizontally along the upper frame 64, and the rotation of the rotating shaft 2 is controlled by the lifting servomotor 26.
7 is rotated forward and reverse. Rotary axis 2
An upper pulley 28a is attached to each of the ends of the pulley 7. Below each upper pulley 28a, a lower pulley 28b rotatably attached to each end of the lower gantry 62 is attached so as to face each upper pulley 28a. The lifting belt 2 is attached to the upper pulley 28a and the lower pulley 28b facing each other.
8c are wound around each.

A vertical seal mechanism 80 is provided on each side of the unloading mechanism 20 perpendicular to the unloading direction. As shown in FIGS. 10 and 11, each vertical seal mechanism 80 includes a sealer bar 81 horizontally arranged on each side of the upper carry-out conveyor 22, and the sealer bar 81 is attached to a lower end portion, and the carry-out elevating Frame 24
Vertical sealing air cylinder 82 supported vertically
And a pressing plate 83 that is horizontally arranged opposite to each sealer bar 81 on each side of the lower unloading conveyor 21. Each holding plate 83 is in a state of being supported by the lower gantry 62.

Each sealer bar 81 is pressed down against each holding plate 83 by driving each vertical sealing air cylinder 82 in a state of being lowered together with the upper carry-out conveyor 22.

In the packaging machine having such a configuration, an article to be packaged in which a plurality of copies of newsprint are stacked is placed on one end of the carry-in conveyor 11 in the carry mechanism 10. At this time, the air cylinder 18d for rotation of one of the positioning members 18 located on the far side with respect to the end of each carry-in conveyor 11 on which the articles to be packaged are placed.
Of the piston rod is advanced. Thereby, the contact plate 18 c of the positioning member 18 is in a state of being orthogonal to each of the carry-in conveyor belts 11. On the other hand, the rotating air cylinder 18a of the other positioning member 18, which is close to the end of each carry-in conveyor 11 on which the articles to be packaged are placed, is in a state where the piston rod is retracted, and its positioning is performed. The contact plate 18d of the member 18 is located at a retracted position along the transport direction outside the transport area of each carry-in conveyor 11.

In this state, each carry-in conveyor 11
Transports the articles to be packaged at each end of each carry-in conveyor 11 to the central part of each carry-in conveyor 11 in a state where the respective central parts are raised so as to be located above the upper surface of the carry-out conveyor part 14. As a result, the carry-in belts 11b are circulated and moved synchronously. By the orbital movement of each carry-in belt 11b, the carried matter is carried to the central part of each carry-in conveyor 11, and is stopped by contacting the contact plate 18d of the positioning member 18 located in the carrying area. Thereby, the articles to be packaged are located on the carry-out conveyor belt 14 at the center of each carry-in conveyor 11.

As described above, when the article to be packaged contacts the contact plate 18c of one of the positioning members 18 and is positioned, the servomotor 19h for raising and lowering the compression member 19 is driven to lower the compression plate 19c. You. Thereby, the articles to be packaged on the central part of each carry-in conveyor 11 are compressed by the compression plate 19c. When the article to be packaged is compressed by the compression plate 19c, the compression plate 19c is raised. At this time, the height position where the compression plate 19c is lowered most is detected and stored by an encoder built in the servomotor 19h for raising and lowering.

As described above, when the articles to be conveyed by the carry-in conveyor 11 are in a compressed state, each of the carry-in conveyors 11 is lowered and the articles to be packaged are unloaded.
It will be placed on top. And each positioning member 1
The contact plate 18c of No. 8 is in a retracted state in which the contact plate 18c has moved out of the transport area of each carry-in conveyor 11.

At this time, the packaging film 71 fed from the packaging film roll 72 of the upper packaging film feeding mechanism 30 and the packaging film 7 fed from the packaging film roll 72 of the lower packaging film feeding mechanism 40.
1 are heat-sealed to each other by the upper holding plate 54 and the lower holding plate 58 of the horizontal sealing mechanism 50, and the packaging film 71 is vertically interposed between the loading mechanism 10 and the unloading mechanism 20. It is arranged in a state.

In such a state, the carry-out conveyor 14 of the carry-in mechanism 10 is driven, and the articles placed on the carry-out conveyor 14 are conveyed to the carry-out mechanism 20. Then, when the article to be packaged is transferred from the unloading conveyor 14 onto the lower unloading conveyor 21 of the unloading mechanism 20, the article is covered with the unwrapped film 71.

At this time, the upper unloading conveyor 22 of the unloading mechanism 20 is lowered so that the compression plate 19c when the article to be packaged is compressed by the loading mechanism 11 is located slightly above the lowest level. , Upper conveyor 22
And the lower unloading conveyor 21 are respectively driven. In such a state, the lower unloading conveyor 21 of the unloading mechanism 20 in a state where the articles to be packaged are covered with the packaging film 71.
Will be transferred above. Then, when the article to be packaged is transferred onto the lower unloading conveyor 21, the unloading elevating frame 24 is driven to lower the upper unloading conveyor 22, thereby compressing the unpacked article. In this case, the compression height of the articles to be packaged on the upper unloading conveyor 22 is set lower than the compression height of the compression member 19 on the import conveyor 11 by the compression plate 19c. Compressed.

If the transport of the articles to be packaged is not continuous, the compression by the upper discharge conveyor 22 may be performed twice or more.

As described above, by the upper discharge conveyor,
By compressing the packaged object lower than the compression member 19, the amount of the packaging film used for packaging the packaged object can be reduced.

In this way, the articles to be packaged are conveyed by the upper carry-out conveyor 22 and the lower carry-out conveyor 21 while being compressed by the upper carry-out conveyor 22. Then, when the entire article to be packaged is transferred onto the lower unloading conveyor 21, the transport of the article to be packaged by the upper unloading conveyor 22 and the lower unloading conveyor 21 is stopped.

In such a state, the horizontal heat sealing mechanism 50 and the pair of vertical sealing mechanisms 80 are operated. The horizontal seal mechanism 50 lowers the vertical frame 51 by driving the air cylinder 55, and raises the vertical frame 56 by driving each air cylinder 59. This allows
Upper holding plate 54 attached to lifting upper frame 51
And the lower holding plate 5 attached to the lifting frame 56
8, the upper packaging film 71 covering the packaged object.
And the lower film 71 are pressed against each other, and both are heat-sealed. Thereafter, the air cylinder 54a provided on the upper pressing plate 54 is driven, and the center in the width direction of the heat-sealed portion is cut by the cutter.

Each vertical seal mechanism 80 is lowered by each sealer bar 81 being lowered by a vertical seal air cylinder 82 attached to the upper carry-out conveyor 22.
Upper packaging film 71 and lower packaging film 71
Are pressed by the respective sealer bars 81 and the respective pressing plates 83, and the both packaging films 71 are heat-sealed on each side of the packaged object. Thereby, the article to be packaged is completely wrapped by the packaging film 71.

When the article to be packaged is wrapped in the packaging film 71, the upper unloading conveyor 21 of the unloading mechanism 20
And it is unloaded from the packaging machine by the lower unloading conveyor 22.

When a package that does not need to be wrapped with the packaging film 71 is loaded onto one end of the loading conveyor 11 in the loading mechanism 10, the package is transported by the positioning members 18. May be conveyed to the other end of the carry-in conveyor 11 without stopping at the center of the carry-in belt 11.

The entire packaging film 71 of the packaging film roll 72 supported by the upper packaging film feeding mechanism 30 is fed out, and the spare packaging film roll 72 on the support base 32 is rolled on the support roller 31. Then, with the packaging film roll 72 being supported by the receiver 94 of the packaging film lift mechanism 90, the support frame 93 is
Is raised. When the support frame 93 is raised to the uppermost position, the air cylinder 96a is driven, and each stopper 95 is rotated. As a result, the packaging film roll 72 supported by the receiver 94 is transferred onto the support 32 of the upper packaging film feeding mechanism 30.

As described above, even when the packaging film roll 72 is placed on the upper packaging film unwinding mechanism 30, the packaging film roll 72 is automatically supplied by the packaging film lift mechanism 90. Work becomes unnecessary, and workability is remarkably improved.

[0061]

As described above, in the packing machine of the present invention, the carry-in conveyor of the carry-in mechanism is elongated in the left-right direction, and the objects to be packaged are carried in from each side of the carry-in conveyor, and the central part of the carry-in conveyor is provided. Since it is conveyed in a direction perpendicular to the container, the degree of freedom such as the layout of a device for conveying the packaged object with respect to the carry-in conveyor is significantly improved. In addition, the unpackaged items that do not need to be packaged are transported to the other end of the carry-in conveyor without being transported at right angles from the center of the carry-in conveyor, eliminating the need for special removal from the carry-in conveyor. In addition, workability is significantly improved.

The volume of the package can be significantly reduced by compressing the package by the compression plate provided in the carry-in mechanism and the upper carry-out conveyor provided in the carry-out mechanism. The amount of film used can be reduced.

Further, by providing the packaging film lift mechanism, the packaging film roll can be automatically transferred to the upper packaging film feeding mechanism, and the transfer operation of the packaging film roll is remarkably facilitated.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an example of an embodiment of a packaging machine of the present invention.

FIG. 2 is a side view of the packaging machine.

FIG. 3 is a plan view of a carrying-in mechanism of the packaging machine.

FIG. 4 is a front view of the loading mechanism.

FIG. 5 is a side view of the loading mechanism.

FIG. 6 is a plan view of a main part of a front side portion of the carrying-in mechanism of the packaging machine.

FIG. 7 is a side view of a packaging film lift mechanism provided in front of the loading mechanism.

FIG. 8 is a front view of the packaging film lift mechanism.

FIG. 9 is a front view of a horizontal sealing mechanism provided behind the loading mechanism.

FIG. 10 is a side view of the horizontal sealing mechanism.

FIG. 11 is a rear view of a carry-out mechanism provided behind the horizontal seal mechanism.

FIG. 12 is an enlarged side view of a main part of the unloading mechanism.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 carry-in mechanism 11 carry-in conveyor 11b carry-in belt 12 carry-in motor 14 carry-out conveyor 14e carry-out belt 15 elevating guide 17 carry-out motor 18 positioning member 18c contact plate 19 compressing member 19c compression plate 20 carry-out mechanism 21 lower carry-out upper motor 22a carry-out motor 22 Unloading conveyor 23 Unloading elevating motor 24 Unloading elevating frame 25 Guide rail 26 Elevating servomotor 28c Elevating belt 27 Rotating shaft 30 Upper wrapping film feeding mechanism 31 Support roller 32 Support table 33 Pinch roller 40 Upper wrapping film feeding mechanism 41 Supporting roller 42 Support stand 43 Pinch roller 50 Horizontal seal mechanism 51 Elevating upper frame 52 Slider 53 Guide rail 54 Upper holding plate 55 Air cylinder 56 Elevating frame 57 57 Slider 58 Lower press plate 59 Air cylinder 61 Support frame 62 Lower frame 63 Bottom frame 64 Upper frame 80 Vertical seal mechanism 81 Sealer bar 82 Air cylinder for vertical seal 83 Press plate 90 Packaging film lift mechanism 92 Slider 94 Receiver 95 Stopper 96a Air cylinder 98 Motor 99 Chain

Claims (6)

[Claims] 1. An object to be packaged in which a plurality of bundles are stacked,
While being placed on each end of the carry-in conveyor and being conveyed to the central part thereof, the packaged goods conveyed to the central part of the carry-in conveyor are conveyed by the carry-out conveyor in a direction orthogonal to the carry-in conveyor. A carrying-out mechanism, and a carrying-out mechanism that conveys the articles to be carried out by the carrying-out conveyor of the carrying-in mechanism in the same direction as the carry-in / out conveyor of the carrying-in mechanism, while compressing the articles by the upper carrying-out conveyor and the lower carrying-out conveyor, An upper wrapping film feeding mechanism and a lower wrapping film feeding mechanism, which are respectively disposed above and below the loading mechanism, so as to feed the wrapping film between the loading mechanism and the transporting mechanism; and an upper wrapping film feeding mechanism. Film to be wrapped delivered by the lower film wrapping mechanism , Packaging machine, characterized by comprising a sealing mechanism for heat sealing to each other, the. 2. The loading mechanism according to claim 1, wherein said loading mechanism is provided with a pair of positioning members for abutting on the package to be loaded by the loading conveyor and positioning the package at the center of the loading conveyor. Packaging machine. 3. The packaging machine according to claim 2, wherein the carry-in mechanism is provided with a compression member that compresses the packaged object positioned at the center of the carry-in conveyor by each positioning member. 4. The packaging machine according to claim 3, wherein the compression height of the article to be packaged by the compression member can be detected. 5. The packaging machine according to claim 4, wherein the upper carry-out conveyor of the carry-out mechanism is capable of compressing the article to be packed to a height equal to or higher than the compression height of the compression member. 6. The packaging machine according to claim 1, further comprising a packaging film lift mechanism for supplying a packaging film roll to the upper packaging film feeding mechanism.