JPH0891311A - Bottom-attaching device for automatic packaging machine for triangular object such as sandwich - Google Patents

Abstract

PURPOSE: To mechanically and automatically perform a bottom-attaching work under a condition wherein air is purged, and at the same time, an accident to crush a content is not generated. CONSTITUTION: A vertically movable attaching member 87 is arranged on the top of a front half of a belt conveyor 4, and a receiving plate 89 for bottom- attaching which moves in the longitudinal direction is provided on the attaching member 87. At the same time, on both right and left sides of a rear half of the belt conveyor 4, folding in members 90, 91 for right and left side bottom surfaces, which fold down right and left side bottom surface covering areas and place on the upper surface of the receiving plate 89 for bottom-attaching, are arranged. Also, a heater for bottom-attaching which heat-welds the right and left side bottom surface covering areas in the overlapped condition to each other is provided in such a manner that the heater for bottom-attaching may be reciprocate-driven in the approaching/ separating direction from the receiving plate 89 for bottom-attaching. Also, a vertically movable film-holding member 95 is arranged on the top of the rear half of the belt conveyor 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottoming device for an automatic wrapping machine for triangular objects such as sandwiches and cakes, and more specifically to a state where the triangular objects such as sandwiches are not deformed and air is not left (expelled) therein. The present invention relates to a bottom lining device for an automatic packaging machine for triangular objects such as sandwiches by devising so that the bottom parts can be pasted together.

[0002]

2. Description of the Related Art Conventionally, sandwiches are displayed by wrapping them by hand using a wrapping film, or by manually putting them in a transparent bag formed in advance in a triangular shape and wrapping them by means of closing the mouth by hand. It was displayed. These methods of wrapping by hand using a wrapping film and manually packing in a triangular transparent bag are not hygienic, unwrapped condition is not uniform, time-consuming and not suitable for mass production There was a defect such as. In order to eliminate such a defect, it is desirable to mechanize and automate it so as not to touch it, and the mechanization and automation have been awaited. However, when mechanizing / automating,
It was difficult to realize because the sandwich was soft and easily deformed.

[0003]

As a result of research to make the above realization possible, the present inventor was able to provide an automatic packaging machine for sandwiches and the like as shown in the examples described later. When providing this automatic wrapping machine, a bottom lining device is absolutely necessary, and unless the bottom lining device can be mechanized and automated, the automatic wrapping machine cannot be provided.

An object of the present invention is to provide a novel bottoming device for an automatic packaging machine for triangular objects such as sandwiches, which makes it possible to provide the above automatic packaging machine.

[0005]

In order to achieve the above object, a bottoming device in an automatic packaging machine for sandwich-shaped triangular objects such as sandwiches according to the present invention has a sandwich-shaped triangular object placed on a packaging film 14. State and state in which the left and right side covering portions 36, 37 of the packaging film 14 cover the left and right sides 27, 28 of the triangular object such as the sandwich 6, and the left and right back side covering portions 30, 32 of the packaging film 14.
In the automatic triangle wrapping machine for sandwiches and the like having a conveyor film 4 for conveying the packaging film 14 and the triangle 6 for the sandwich 6 and the like in a state where the back surface 24 of the triangle 6 for the sandwich 6 and the like is covered, A mounting member 87 that descends upward in the direction of inclination due to extension of the cylinder 85 and rises in the opposite direction due to contraction of the cylinder 88 is provided, and the attachment member 87 extends rearward due to extension of the cylinder 88. And move the same cylinder 8
A bottom receiving plate 89 made of a heat-resistant insulating material that moves forward by contraction of 8 is provided, and the right bottom surface covering portion 35 of the packaging film 14 is folded on the left and right sides of the latter half of the belt conveyor 4 and the bottom. The right bottom surface folding member 91 and the left bottom surface covering portion 33 which are placed in a weight state on the upper surface of the tension receiving plate 89 are folded down to form a weight shape on the right bottom surface covering portion 35 existing on the upper surface of the bottom tension receiving plate 86. The left bottom folding members 90 are provided, and the left and right bottom folding members 9 are also provided.
A state in which a bottom heater that heat-welds the left and right bottom surface covering portions 33 and 35 that are folded by 1 and 90 to each other is reciprocally driven by a cylinder in a perspective direction with respect to the bottom receiving plate 89. And a film pressing member 95, which is lowered by the extension of the cylinder 94 and raised by the contraction, is provided above the latter half of the belt conveyor 4.

A pair of left and right pressing plate devices 96 and 97 are provided on both the left and right sides of the belt conveyor 4 for lightly pressing the left and right covering portions 36 and 37 to the left and right surfaces of the triangular-shaped object such as the sandwich 6 to bring them into close contact. It was done,

The left and right pressing plate devices 96 and 97 have cushion springs 98.

[0008]

In the embodiment shown in the drawings, the second to fifth belt conveyors 2 to 5 are sequentially arranged in a line in front of the first belt conveyor 1, and the rear end of the first belt conveyor 1 is sandwiched by a sandwich 6.
1 for placing the package 1 with its oblique side or front surface 23 on the front side and vertical side or back surface 24 on the rear side and bottom side or bottom surface 26 on the lower side.
0, the front end part is the passing point 11 of the sandwich 6 to the second belt conveyor 2, and the left and right side sandwiches that operate at the same speed as the first belt conveyor 1 on both left and right sides of the middle part of the first belt conveyor 1. The feed conveyors 12 and 13 are provided.

Below the second belt conveyor 2, a transparent special-shaped heat-sealable material packaging film 14 which will be described later is provided.
A packaging film supply unit 16 for supplying a long film 15 having a structure in which a large number of the continuous films are continuous, a long cut tape supply unit 18 for supplying the cut tape 17 as a long film, and a predetermined position of the long film 15. Long cut tape 17
And a roll group 20 for delivering the overlapped product 19 to the rear end of the second belt conveyor 2 in a stacked state. The packaging film supply unit 16, the cut tape supply unit 18, and the feed roll group unit 20 are arranged such that the front end portion 21 of the stacked state product 19 is the same as the second belt conveyor before the sandwich 6 is placed on the second belt conveyor 2. It is pulled by the feed roll 101 and the pinch roll 102 so as to operate at a speed at which it is laid on the upper surface of 2.

The packaging film 14 made of a heat-weldable material is
It has a substantially hexagonal shape, and the front surface 23 of the sandwich 6,
A front surface coating part 29, a rear surface coating part 30, 32 composed of left and right sides, a bottom surface coating part 33, 35 composed of left and right sides, which covers the back surface 24, the bottom surface 26, the left surface 27 and the right surface 28. The left side covering portion 36, the right side covering portion 37, and the folding ear portions 38 provided between these places 29 to 37 are provided, and the registration mark 3 for position confirmation is provided at a necessary portion.
It is equipped with 9.

At a location between the first belt conveyor 1 and the second belt conveyor 2, a transfer location 11 of the first belt conveyor 1
Place the sandwich 6 that came above on the second belt conveyor 2
A device 41 for changing the direction of the sandwich 6 which is rotated by 35 degrees and transferred and placed is provided. The direction changing device 41 includes left and right sliders 48 and 49 that move left and right by a screw shaft 47 having left and right screws 45 and 46 that are rotated by a motor 42 via gears 43 and 44, and move closer to each other, and an air cylinder. 50 for rack device 40 and pinion 104
It is composed of a pair of left and right L-shaped holding arms 54 and 55 that swing (raises and lowers) in the front-rear direction by a rod shaft 53 with left and right keys 51 and 52 that rotate via the. , 55 is sandwich 6 inside the tip
Has contact members 56 and 57 for the left and right surfaces 27 and 28 of
It has a boss 59 with a groove 58 at the base end.
A fork portion 60 provided on each of the sliders 48 and 49 is rotatably loosely fitted in the groove 58. Further, above the left and right sides of the second belt conveyor 2, left and right guide belts 61 and 62 that operate at the same speed as the second belt conveyor 2 are suspended.

A film cutter 65 which is vertically moved by a cylinder 64 which separates the above-mentioned piled-up product 19 between the packaging films 14 at a position between the second belt conveyor 2 and the third belt conveyor 3 and its fixed receiving blade. 66
Are provided as a vertical arrangement.

The latter half of the third belt conveyor 3 is used as a receiving point 69 for the pre-packaging product 68 in which the sandwich 6 is placed on the stretched packaging film 14, and the packaging film 14 is provided on both left and right sides of the receiving point 69. Left / Right side coating part 3
6, 37 and the sandwich guide guide plates 72 and 73 are provided inside the folding guide plates 70 and 71, respectively, and the front half portion 74 of the third belt conveyor 3 is provided. A pair of left and right first parts for lightly pressing the left and right side covered portions 36, 37 on both the left and right sides against the left and right sides of the sandwich 6 to make them adhere to each other.
Equipped with pressing plate devices 75 and 76. These left and right first
The pressing plate devices 75 and 76 have cushion springs 77 so that the sandwich 6 is not softly touched and crushed.

A heat-resistant insulating material that rises (backwards) above the front half portion 74 of the third belt conveyor 3 in an inclined direction that is lowered forward by extension of the air cylinder 78 and rises (backwards) due to contraction of the air cylinder 78. The backing plate 79 for backing is provided, and the right side back cover portion 3 of the packaging film 14 is provided on both left and right sides of the front half portion 74.
The folding member 81 for the right rear surface and the back covering portion 30 on the left side, which are folded down to bring the upper surface of the backing receiving plate 79 into a weighted state, are folded down to receive the backing receiving plate 79.
Equipped with a left back folding member 80, which is in a weighted state, on the right back covering portion 32 existing on the upper surface of the
A backing bar / heater 82 for heat-welding the left and right back surface coating portions 32, 30 to each other, which are folded by the back folding members 80, 81 on both right sides, is attached to the backing receiving plate 79. It is provided as a state of being reciprocally driven in the perspective direction.

A mounting member 87 is arranged above the front half of the fourth belt conveyor 4 so that the air cylinder 85 extends downwardly in a downwardly inclined direction, and when the air cylinder 85 contracts, the mounting member 87 rises in the opposite direction. This mounting member 8
7, a bottom receiving plate 89 made of a heat-resistant insulating material, which moves rearward by the expansion of the air cylinder 88 and moves forward by the contraction of the air cylinder 88, is installed and the latter half of the fourth belt conveyor 4 is provided. On the left and right sides of the part,
The right bottom surface covering portion 35 in the packaging film 14 is folded down to be in a weight state on the upper surface of the bottom receiving plate 89, and the right bottom surface folding member 91 and the left bottom covering portion 33 are folded down to receive the bottom receiving plate 86. The left bottom surface folding member 90 that is in a weighted state is provided on the right bottom surface covering portion 35 existing on the upper surface of the left side, and the left side bottom surface folding members 91 and 90 on the left side are in a folded state.・ Bottom-lined spots for heat-sealing the right and left bottom coating points 33, 35 to each other ・ Spots for seal 141 ・
The heater 92 is provided in a state of being reciprocally driven by an air cylinder (not shown) in the perspective direction with respect to the bottom receiving plate 89, and further descends above the latter half portion of the fourth belt conveyor 4 by extension of the air cylinder 94. A film pressing member 95 that rises due to contraction is provided, and the left and right side covering points 36 and 37 in a folded state are lightly pressed to the left and right sides of the sandwich 6 so as to be in close contact with the left and right sides of the central portion of the fourth belt conveyor 4. A pair of left and right second pressing plate devices 96 and 97 are provided. The left and right second pressing plate devices 96 and 97 have cushion springs 98 so that the sandwich 6 is not softly touched and crushed.

Around the fifth belt conveyor 5, there are provided table-shaped portions 110 extending in the left-right direction and the front direction, with the upper surfaces of the fifth belt conveyor 5 and the table-shaped portion 110 having the same height. A first floor plate 111 made of a heat-resistant insulating material is laid on the upper surface of the portion 110 located in front of the fifth belt conveyor 5, and an upper folding residue which is lowered above the floor plate 111 by extension of the air cylinder 112 and rises by contraction. Upper seal 113 to part 109
Wearing bar / heater member 114 and notch
115 Wearing cutting member 116 is arranged. The bar / heater member 114 for mounting the upper seal 113 has a cushion spring 117 so that the soft seal is used for sealing.

An intermittent operation type chain drive 11 is provided above the table-shaped portion 110 so that the feeding direction of the fifth belt conveyor 5 is orthogonal to the feeding direction of the fifth belt conveyor 5.
8 are supported by a support portion 119, and the push-feeding triangular spatula-shaped portions 120 are fixed to the outer periphery of the chain drive 118 by the arms 121, and the abutting pieces 122 are attached to the front oblique side of each triangular spatula-shaped portion 120. To provide. Stop the chain drive 118 with each triangular spatula 1
This is done each time 20 arrives near the left side of the fifth belt conveyor 5 in sequence.

Of the points corresponding to the positions at which the triangular spatula-shaped portions 120 on the right side of the fifth belt conveyor 5 of the table-shaped portion 110 correspond, the portion closest to the fifth belt conveyor 5 is the first working portion 123. The next closest part is the second working part 124, the next closest part is the third working part 125, and the next closest part is the fourth working part 126.

A second floor plate 127 made of a heat-resistant insulating material is laid on the upper surface of the rear side portion of the first working portion 123, and above the floor plate 127 is lowered by the expansion of an air cylinder (not shown) and raised by the contraction. The bar heater 130 for mounting the lower seal 129 is installed on the side folding remainder 128.

A rack 133 reciprocating by an air cylinder 132 and a folding member 135 for a lower folding remainder 128 which is undulated by a pinion 134 rotated by the rack 133 are provided outside the rear portion of the second working portion 124. At the same time, the point seal 131 for temporary fixing of the lower folding residue 128 which is lowered (advanced) by extension of an air cylinder (not shown) and raised (retracted) by contraction is provided above the rear part of the second working portion 124. Pin / heater member 136
Distribute.

A surface of the lower folding remainder 128 for the main stop seal 140 that descends (advance) by extension of an air cylinder (not shown) above the rear part of the third working part 125 and rises (retracts) by contraction. The heater member 137 is installed.

The fourth working unit 126 is a unit 139 for taking out the packaging completed product 138.

In the above embodiment, the operation of wrapping the triangular sandwich 6 with the transparent packaging film 14 is automatically performed.

First, the long film 15 and the long cut tape 17 are delivered from the packaging film supply unit 16 and the cut tape supply unit 18, and are guided and fed onto the second belt conveyor 2 via the feed roll group unit 20. Roll 1
01 and the pinch roll 102 to pull the stacked film 19 of the long film 15 and the long cut tape 17 correctly on the second belt conveyor 2 and the tip of the stacked product 19 is film cutter 65. Perform the pre-operation such as cutting and aligning the edges of the leading edge to make the packaging start posture.

After that, the sandwich 6 is placed on the object-to-be-packaged place 10 with the front surface 23 of the front side, the back surface 24 of the back side, and the bottom surface 26 of the bottom side. In this way, the sandwich 6 is conveyed to the first belt conveyor 1 and the left / right sandwiching conveyers 12 and 13, and when the sandwich 6 reaches the transfer point 11, these conveyors 1, 12 and 13 are stopped. The sandwich 6 coming over the transfer point 11 is turned over by the action of the device 41.
The sandwich 6 is rotated by 35 degrees and transferred onto the second belt conveyor 2, so that the sandwich 6 is moved to the left and right guide belts 61, 6
It is placed at a position between the two and is placed on the above-mentioned overlapped object 19 on the second belt conveyor 2.

In the direction changing device 41, when the sandwich 6 comes to the transfer point 11 and stops, the screw shaft 47 is rotated by the motor 42 and both the left and right sliders 4 are rotated.
8 and 49 are moved inward, and the left and right sliders 48 and 4 are
The left and right L-shaped holding arms 54, 5 by moving 9
5 approaches the sandwich 6, hitting members 56, 5
7 softly abuts the left and right surfaces 27, 28 of the sandwich 6 to sandwich the sandwich 6, and after this sandwiching, the rack device 40 moves the sandwiching arms 54, 55 via the rod shaft 53 by the air cylinder 50. 1 ahead
Rotate 35 degrees and sandwich 6 onto second belt conveyor 2
The motor 42 reverses the screw shaft 47 to release the sandwiching of the sandwiched arms 54 and 55 by the motor 42 at this time.
After this release, the rack device 40 returns the gripping arms 54, 55 to their original positions via the return rod shaft 53, and prepares for the next time.

Stacked product 1 on the second belt conveyor 2
When the sandwich 6 is placed on 9, the second and third belt conveyors 2, 3 and the left and right guide belts 61, 62, the feed roll 101 and the pinch roll 102 are actuated so that the sandwich 6 and the stack state object 19 are transferred to the third belt conveyor. 3 and then the whole sandwich 6 is temporarily stopped when the whole sandwich 6 is crossed over the receiving point 69 of the third belt conveyor 3, and the film cutter 65 is operated during this stop to stack the sheets. The product 19 is cut to obtain the packaging film 14.

When the third belt conveyor 3 starts to move again, the sandwich 6 and the packaging film 14 existing on the third belt conveyor 3 move forward, and at the time of this movement, the left and right side covering portions 36 of the packaging film 14 are moved. Three
7 is erected by the folding guide plates 70, 71 and the sandwich guide guide plates 72, 73, and when the sandwich 6 is positioned between the left and right first pressing plate devices 75, 76, the third belt conveyor 3 Stop. still,
Immediately before this stop, the air cylinder 78 is extended to lower the backing support plate 79, and when the sandwich 6 is very lightly brought into contact with the lowered backing support plate 79, the third belt conveyor It is supposed to be stopped.

When the sensor 8 senses that the sandwich 6 has come between the left and right first pressing plate devices 75 and 76, the first pressing plate devices 75 and 76 move inward and are folded up as described above. The left and right side covering portions 36 and 37 are pressed very softly against the left and right sides 27 and 28 of the sandwich 6 to expel air from between the packaging film 14 and the sandwich 6, and the left and right side folding members 80 and 81.
Is folded on the backing support plate 79 in a state where the left and right back surface covering portions 30, 32 of the packaging film 14 are lowered, and after this folding, the backing bar heater 82 is mounted on the backing support. The back cover portions 30, 32 on the left and right sides are fixed to each other by approaching the plate 79, and after this fastening, the backing bar heater 82 and the backing receiving plate 79 are directed upward, and the left and right sides are also fixed. The back folding members 80, 81 return to the left and right outward directions, respectively, to prepare for the next time. After this return, the sandwich 6 whose back is finished on the third belt conveyor 3 is transferred to the fourth belt conveyor 4. In the case of the back lining process, the folding ear 38
Are folded and overlapped to form an upper folding residual portion 109.

The sensor 9 senses that the sandwich 6 and the packaging film 14 are located between the left and right second pressing plate devices 96 and 97 on the fourth belt conveyor 4, and the fourth belt conveyor 4 is moved. Immediately after this stop, the film pressing member 95 descends and the packaging film 14
The rear end is pressed against the fourth belt conveyor 4 from above to prevent the packaging film 14 from moving forward, the air cylinder 85 extends, the mounting member 87 descends obliquely, and the air cylinder 88 contracts. Receiving plate 89 for bottoming
Moves forward, and the extra portion 84 of the back part is
And the sandwich 6 is pushed forward and air is expelled from the inside of the lining, and the second pressing plate devices 96 and 97 are moved inward so that the left and right side covering portions 36, 37 to the left and right sides 27 and 2 of sandwich 6
8 is pressed very softly to expel the air from between the packaging film 14 and the sandwich 6, and after keeping the expelled state to raise the film pressing member 95, the left and right bottom surface folding members 90 and 91 fold the left and right bottom surface covering portions 33 and 35 of the packaging film 14 on the bottom receiving plate 89, and after this folding, the bottom spot heater 92 approaches the bottom receiving plate 89. Then, the left and right bottom surface covering portions 33 and 35 are temporarily fixed to each other, and after this fixing, the bottom spot heater 92 and the bottom receiving plate 89 are directed upward, and the left and right sides are also fixed. Bottom folding members 90, 91 are left
Return to the right outward direction and prepare for the next time. After this return, the sandwich 6 whose bottom has been finished on the fourth belt conveyor 4 is transferred to the fifth belt conveyor 5. In the case of the bottoming step, the folding ear portions 38 are folded and overlapped with each other to form the lower folding margin portion 108.

The sandwich 6 reaching the fifth belt conveyor 5 is brought into contact with the abutting piece 122 provided on the triangular spatula-shaped portion 120 which is in a standby state next to the fifth belt conveyor 5. The upper folding part 109 is placed on the first floor plate 111. The sensor 7 detects the sandwiched sandwiched state 6 and stops the fifth belt conveyor 5. Immediately after this stop, the air cylinder 112 extends and the upper seal 113 wearing bar / heater member 11
4 and notch 115
6 descends, and the upper seal 113
After assembling and notching 115, it rises.

A bar / heater member 114 for mounting the upper seal 113 and a cutting member 116 for mounting the notch 115.
After the ascent of the chain drive 118,
13 and the sandwich 6 with the notch 115 are pushed to the first working portion 123 of the table-shaped portion 110 to stop and the lower seal 129 attachment bar / heater member 13
0 descends and the lower seal 129 is attached to the lower folding remainder 128.
And then rise.

After raising the lower seal 129 wearing bar / heater member 130, the chain drive 118 moves the sandwich 6 after the lower seal 129 is applied to the second working portion 124.
The folding member 135 for the lower folding part 128 is erected by the rack 133, and the lower folding part 128 is maintained in a state of being overlapped with the bottom portion. The stop point seal member 136 descends and the lower folding residue 128 is temporarily fixed to the outer surface of the bottom-lined portion and then rises.

After the temporary sealing point seal member 136 is raised, the chain drive 118 pushes the sandwiched sandwich 6 to the third working portion 125 and stops, and at the same time, the final fixing face seal member 137 descends and moves downward. Folding part 1
28 is raised with a permanent stop seal 140 on the outer surface of the bottomed portion, thus completing the packaging of the sandwich 6.

After the packaging completed product 138 is obtained in this manner, the chain drive 118 is operated and the packaging completed product 13 is obtained.
8 is pushed to the take-out section 139 and stopped, and the worker takes out the packaging completed product 138 from the take-out section 139,
For example, packaging is performed.

[0036]

According to the present invention, as described above, the state where the sandwich 6 or the like triangular shape is placed on the packaging film 14 and the left and right side covering portions 36 and 37 of the packaging film 14 are the left and right sides of the sandwich 6 or the like triangular shape. The state where the surfaces 27 and 28 are covered, and the left and right rear surface coating points 3 of the packaging film 14
The packaging film 14 and the sandwich 6 with 0 and 32 covering the back surface 24 of the triangular shape such as the sandwich 6
In a sandwich or other automatic triangle wrapping machine having a conveyor 4 for transporting an equilateral triangle, the cylinder 85 extends downward above the front half of the belt conveyer 4 in the direction of an inclination downward toward the rear, and the cylinder 88 The mounting member 87 that rises in the opposite direction due to contraction is provided, and the mounting member 8
7 is equipped with a bottom receiving plate 89 made of a heat-resistant insulating material that moves rearward by the extension of the cylinder 88 and moves forward by the contraction of the cylinder 88, and on the left and right sides of the latter half of the belt conveyor 4, The right bottom surface covering portion 35 in the packaging film 14 is folded down to be in a weight state on the upper surface of the bottom receiving plate 89, and the right bottom surface folding member 91 and the left bottom covering portion 33 are folded down to receive the bottom receiving plate 86. A left side bottom surface folding member 90 having a weight shape is provided on the right side bottom surface covering portion 35 existing on the upper surface of the above, and these left side and right side bottom surface folding members 91, 90 are in a folded state. left·
A bottom heater for heat-welding the right and left bottom surface coating portions 33 and 35 to each other is provided in a state of being reciprocally driven by a cylinder in the perspective direction with respect to the bottom receiving plate 89, and above the latter half portion of the belt conveyor 4. A film pressing member 9 that descends when the cylinder 94 extends and that rises when it contracts.
5, the left and right pressing plate devices 96 and 97 have cushion springs 98, so that the belt conveyor 4
The belt conveyor 4 is stopped when a triangular object such as the sandwich 6 is positioned between the pressing plate devices 96 and 97 on the upper side, and immediately after this stop, the film pressing member 95 descends to move the rear end of the packaging film 14. The portion is pressed against the belt conveyor 4 from above to prevent the packaging film 14 from moving forward, the cylinder 85 extends and the mounting member obliquely descends, and the cylinder 88 contracts to form the bottom receiving plate 89. Performing the operation of moving forward, performing a step of folding the surplus portion 84 of the backing portion and a step of pushing a triangular object such as the sandwich 6 forward to expel air from the inside of the backing portion, and the pressing plate device 96. , 97 progresses inwardly and presses the left and right side covering portions 36, 37 extremely softly against the left and right sides 27, 28 of the sandwich 6 for the packaging film 14.
The air is expelled from between the triangular shaped objects such as the sandwich 6 and the left and right bottom folding members 90, 91 in the packaging film 14 immediately after raising the film pressing member 95 while keeping these expelled states. The left and right covering portions 33, 35 are folded over the bottom receiving plate 89, and after this folding, the bottom heater 92 approaches the bottom receiving plate 89 and the left and right bottom covering portions 3
3, 35 are fastened to each other, and after this fastening, the heater for bottoming and the receiving plate 89 for bottoming are directed upward and to the left.
The right bottom folding members 90 and 91 are returned to the left and right outward directions, respectively, to prepare for the next time. After this return, the triangular shaped material such as sandwich 6 having been bottomed on the belt conveyor 4 is transferred to the next step.

[0037]

The bottoming device in the automatic packaging machine for sandwiches and the like according to claim 1 can mechanically and automatically perform the bottoming work. The bottoming device in the packaging machine can mechanically and automatically perform the bottoming work in a state where air is expelled from the inside.
It is possible to automatically and mechanically perform bottoming work in a state in which air is expelled from the inside and a state in which the contents are not crushed, and a triangle-shaped automatic object such as a sandwich according to each of these claims. The bottoming device in the packaging machine makes it possible to provide the above automatic packaging machine.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view showing a transfer portion which constitutes a step of transferring and placing a sandwich on a long film with a long cut tape.

FIG. 4 is a plan view of the same.

FIG. 5 is a sectional view taken along the line AA of FIG.

FIG. 6 is a side view showing a rear surface processing portion that performs a folding process and a back tensioning process of the left and right side covering portions in the packaging film.

FIG. 7 is a plan view of the same.

FIG. 8 is a sectional view taken along the line BB of FIG.

FIG. 9 is a cross-sectional view showing an intermediate state of a back-lining process.

FIG. 10 is an enlarged cross-sectional view of the main part of the same.

FIG. 11 is a side view showing a bottom surface processing portion for performing a bottoming step.

FIG. 12 is a plan view of the same.

FIG. 13 is a cross-sectional view showing a state where air is expelled in the bottoming treatment step.

FIG. 14 is a cross-sectional view showing an intermediate state of a bottoming treatment step.

FIG. 15 is an enlarged cross-sectional view of the main part of the same.

FIG. 16 is a positional relationship diagram between a table-shaped portion and a chain drive.

FIG. 17 is a side view showing an upper folded portion processing portion which performs a sealing process and a notch cutting process for the upper folded portion.

FIG. 18 is a plan view of the same.

FIG. 19 is a side view showing a lower fold remainder portion sealing portion which constitutes a lower fold remainder sealing step.

FIG. 20 is a plan view of the same.

FIG. 21 is a side view showing a temporary fixing process portion of the lower folding unfolded portion, which constitutes a step of temporarily fixing the lower folding unfolded portion.

FIG. 22 is a plan view of the same.

FIG. 23 is a cross-sectional view showing a state in the middle of the temporary fastening process of the lower folding part.

FIG. 24 is a side view showing a final fastening processing portion of a lower folding remainder portion which constitutes a final fastening process of the lower folding remainder portion.

FIG. 25 is a plan view of the same.

FIG. 26 is a perspective view showing a long film.

FIG. 27 is a perspective view showing a packaging film.

FIG. 28 is a perspective view showing a state where the left and right side covering portions are folded up.

FIG. 29 is a perspective view showing a state in which the back is upholstered.

FIG. 30 is a perspective view showing a state in which a surplus portion of the back lining portion is tilted.

FIG. 31 is a perspective view showing a state in which the bottom is lined up.

FIG. 32 is a perspective view showing a state in which the upper seal is attached.

FIG. 33 is a perspective view showing a state where a lower seal is attached.

FIG. 34 is a perspective view showing a state where the lower folding part is temporarily fixed.

FIG. 35 is a perspective view showing a completed packaging product in which a lower folding residue is finally fixed.

FIG. 36 is a perspective view showing a state where the completed packaging products are displayed.

[Explanation of symbols]

 1 1st Belt Conveyor 2 2nd Belt Conveyor 3 3rd Belt Conveyor 4 4th Belt Conveyor 5 5th Belt Conveyor 6 Sandwich 7 Sensor 8 Sensor 9 Sensor 10 Package Placement Place 11 Handing Place 12 Left Side Sanding Conveyor 13 Right Side Pinch feed conveyor 14 Wrapping film 15 Long film 16 Wrapping film supply section 17 Cut tape 18 Long cut tape supply section 19 Stacked state 20 Roll group section 21 Tip part 23 Front side 24 Back side 26 Bottom surface 27 Left side 28 Right side 29 Front side Covering part 30 Left back coating part 32 Right back coating part 33 Left bottom coating part 35 Right bottom coating part 36 Left side coating part 37 Right side coating part 38 Folding ear part 39 Registration mark 40 Rack device 41 Sandwich turning device 42 Motor43 gear 44 gear 45 left screw 46 right screw 47 screw shaft 48 left slider 49 right slider 50 air cylinder 51 left key 52 right key 53 rod shaft 54 left L-shaped clamping arm 55 right L-shaped clamping arm 56 left Contact member 57 Right contact member 58 Groove 59 Boss 60 Two-pronged portion 61 Left guide belt 62 Right guide belt 64 Cylinder 65 Film cutter 66 Receiving blade 68 Packaging preform 69 Receiving point 70 Left folding guide 71 Right folding guide 72 Guide Plate for Sandwich Guide 73 Guide Plate for Sandwich Guide 74 First Half 75 First Pressing Plate Device 76 First Pressing Plate Device 77 Cushion Spring 78 Air Cylinder 79 Back Cover Plate 80 Left Back Folding Member 81 Right Back Insert section 82 Backing Bar Heater 84 Excessive Backing Part 85 Air Cylinder 87 Mounting Member 88 Air Cylinder 89 Bottom Covering Plate 90 Left Bottom Folding Member 91 Right Bottom Folding Member 92 Bottom Spotting Heater 94 Air Cylinder 95 Film holding member 96 Second pressing plate device 97 Second pressing plate device 98 Cushion spring 101 Feed roll 102 Pinch roll 103 Dancer roll 104 Pinion 108 Lower folding part 109 Upper folding part 110 Table-like part 111 First floor plate 112 Air Cylinder 113 Upper Seal 114 Bar / Heater Member 115 Notch 116 Cut Member 117 Cushion Spring 118 Chain Drive 119 Supporting Part 120 Pushing Triangular Spatula Part 121 Arm 122 Hitting Piece 12 1st working part 124 2nd working part 125 3rd working part 126 4th working part 127 2nd floor plate 128 Lower folding part 129 Lower seal 130 Bar heater 131 Point seal 132 Air cylinder 133 Rack 134 Pinion 135 Folding member 136 Pin / heater member 137 Sheet-shaped heater member 138 Packaged product 139 Extraction part 140 Final stop heel 141 Bottom spot seal

Claims (3)

[Claims] 1. A state in which a triangular object such as sandwich 6 is placed on the packaging film 14 and the packaging film 14.
The left and right side coating points 36 and 37 of the sandwich 6 and the like cover the left and right sides 27 and 28 of the triangular shape, and the left and right back side coating points 30 and 32 of the packaging film 14 cover the back side 24 of the sandwich 6 and the like triangular shape. In an automatic triangle-shaped wrapping machine for sandwiches and the like having a conveyor 4 for transporting the wrapping film 14 and the sandwich 6 and the like in such a state, the cylinder 85 extends upward above the front half of the belt conveyor 4 and moves backward. A mounting member 87 that descends in the direction of inclination and that rises in the opposite direction due to the contraction of the cylinder 88 is provided, and the mounting member 87 moves rearward as the cylinder 88 extends and moves forward as the cylinder 88 contracts. Equipped with a bottom plate 89 made of a heat-resistant insulating material that moves along with the left and right sides of the latter half of the belt conveyor 4. Receiving a bottom clad defeat folding right bottom cover points 35 in the packaging film 14 the plate 89
The folding member 91 for the right bottom surface and the bottom covering portion 33 on the left side that are in a weighted state on the upper surface of the left side bottom surface folding portion which is in the form of a weight on the right bottom surface covering portion 35 existing on the upper surface of the bottom receiving plate 86. A heater for bottoming which is provided with the member 90 and which heat-welds the left and right bottom surface covering portions 33 and 35 which are folded by the left and right bottom surface folding members 91 and 90 to each other. Is provided in a state of being reciprocally driven by a cylinder in a perspective direction with respect to the bottom receiving plate 89, and a film pressing member 95 that descends by extension of the cylinder 94 and rises by contraction is provided above the latter half of the belt conveyor 4. A bottom lining device for an automatic packaging machine for triangular objects such as sandwiches. 2. Left and right covering points 36, 37 are provided on both left and right sides of the belt conveyor 4 on the left side of a triangular object such as a sandwich 6.
The bottoming device in an automatic packaging machine for triangular objects such as sandwiches according to claim 1, further comprising a pair of left and right pressing plate devices 96, 97 for lightly pressing and closely contacting the right surface. 3. The bottom lining device for a triangle-shaped automatic packaging machine according to claim 2, wherein the left and right pressing plate devices 96, 97 have a cushion spring 98.