JPH06278721A - Sealer for packing device - Google Patents

Abstract

PURPOSE:To provide a sealer for a packing device that scarcely causes trouble such as an erroneous combination of upper and lower sealers and neglect of switching and that is a simple structure and inexpensive. CONSTITUTION:The device is provided with a double-sealer 52 and a single- sealer 53 which are diverging an angle of the specific number of degrees from the central shaft 54 of an upper sealing member 50. The sealer 52 is equipped with two sealing faces, 55 and 56, which are separate from each other, a heater 57 for heating them, and a heat pipe 60. The sealer 53 is equipped with a single- sealing face 72 and a film-pressing metal fitting 77, both of which are separate from each other, a heater 73 for heating the sealing face 72, and a heat pipe 74. A lower sealing member 80 is equipped with a single sealer 87. The sealer 87 is equipped with two sealing faces, 82 and 83, which are separate from each other, heaters 85 and 86 for heating them, and heat pipes 88 and 89. The heater 86 for the sealing face 83 that faces the film-pressing metal fitting 77 of the sealer 53 is selectively turned on and off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to two types of seal packaging in which both sides of a bag that wraps a packaged object are sealed, and one sided seal packaging in which only one side of the bag is sealed and one side is open. The present invention relates to a sealing device for a packaging device, which can be selectively applied to the packaging method.

[0002]

2. Description of the Related Art Conventionally, for example, a packaging device shown in FIG. 4 is known as a packaging device which can be used for both double-sealed packaging and single-opened sealed packaging. In this device,
The wrapping film 2 for wrapping the packaged object 1 is unrolled by the unrolling roller 5 from the reel 3 wound in a roll, and is introduced into the bag making machine 6 through the guide roller 4. On the other hand, the article to be packaged 1 is fed into the bag making machine 6 at a predetermined interval by the chain blade 11 of the entrance conveyor 10. The packaging film 2 is formed into a tubular shape with the packaged object 1 held inside the bag making machine 6, drawn by the pulling roller 12, and longitudinally (longitudinal direction) by the vertical sealing roller 13. Seal the edge (vertical seal 23 in FIGS. 6 and 7)
It is formed into a tubular shape. Next, it is transferred to the horizontal sealing device 18 by the lead conveyor 9, and the edges in the horizontal direction (short-side direction) on both sides or one side are sealed (the horizontal seal 21 in FIGS. 6 and 7) at the same time. The horizontal sealing device 18 has two pairs of sealers 14, 15 and 16, 17, and the tubular film 2 is fed between the pair of vertically facing sealers 14, 15. As shown in FIG. 5, the sealers 14 and 15 perform a box motion in which the film 2 is sandwiched between the sealers 14 and 15 to repeatedly contact and separate from each other. Then, the film 2 is laterally sealed by the contact between the upper and lower sealers 14 and 15 and cut at the same time, and becomes a packaging bag 19 containing the article to be packaged 1 and is transferred to the next step by the exit conveyor 20. .

As shown in FIG. 6, the packaging bag 19 has a double-sealed packaging bag 22 in which both sides are laterally sealed 21 and 21.
And, as shown in FIG.
Opening seal packaging bag 2 having an opening 25 formed on one side
There are two types, the horizontal sealing device 18 can select which type of sealing is to be performed. The lateral sealing device 18 will be described in detail with reference to numeral 30 in FIG. In FIG. 3, the horizontal seal device 30 has an upper seal member 31 and a lower seal member 32, and both the upper and lower seal members 31 and 32 are sealers 35 and 36 dedicated to both seals.
And sealers 37 and 38 for exclusive use with single-sided seals.
The sealers 35, 36 and the sealers 37, 38 are arranged 90 ° apart from the central axes 33, 34 of the upper and lower seal members 31, 32, respectively. FIG. 3 shows a sealer combination state in which both seal packaging bags 22 are formed. The upper and lower seal members 31 and 32 are attached to the central shafts 33 and 34, respectively.
By rotating the sealers 37 and 38 up and down by rotating 90 ° about the center, it is possible to change to a sealer combination state in which the single-open seal packaging bag 24 is formed. Sealer 3 for both seal packaging bags 22 in the lateral seal device 30
A heater 4 for heating the sealing surface 41 is provided at the reference numerals 5 and 36.
2. A heat pipe 43 for keeping the heating temperature constant, a thermocouple 44 for measuring the temperature, and a cutter 45 for cutting the film are provided.

On the other hand, the sealers 37 and 38 for the single-open seal packaging bag 24 are divided into two parts with the central notch grooves 46 and 47 as boundaries, and a heater 42 for heating the seal surface 41, Heat pipe 4 for keeping the heating temperature constant
3. A thermocouple 44 for measuring the temperature is provided, and the other side is provided with a film pressing metal fitting 48 that slides up and down by a built-in spring (not shown). Further, the cutter 45 for cutting the film can be pulled out to a position that does not interfere with the switching operation when the sealer is switched, and can be returned to the original position after the switching is completed (not shown).

[0005]

However, in the above-mentioned conventional sealing device, when selecting either the double-sided seal packaging or the single-sided seal packaging, the upper and lower sealers are respectively attached to the central shaft 3.
It is necessary to rotate around 3,34. In that case, there is a problem that inconveniences such as mistakenly combining the upper and lower sealers or forgetting to switch between the upper and lower sealers are likely to occur. Therefore, in order to solve the above-mentioned problems, the present invention, when selecting either the double-sided seal packaging or the single-sided seal packaging, mechanically switches the sealer only for the upper sealing member and switches the heater power supply for the lower sealing member. It is an object of the present invention to provide a sealing device for a packaging device, which is capable of making this selection only by performing an opening / closing operation.

[0006]

According to the present invention, in order to achieve the above object, the upper seal member is provided with a double-sided sealer for double-seal packaging and a single-open seal at positions displaced by a predetermined angle with respect to the central axis. A one-sided sealer for packaging, the two-sided sealer is provided with two seal faces separated from each other by a central notch groove, and a heater and a heat pipe for heating these seal faces, The sealer is provided with a one-side sealing surface and a film pressing metal member which are separated from each other by a notch in the central portion, and a heater and a heat pipe for heating the one-side sealing surface, and the lower sealing member is a single sealer. This sealer has two separated by a central notch groove
One sealing surface and a heater and a heat pipe for heating these sealing surfaces are provided, and a heater for heating one sealing surface facing the film pressing metal fitting of the one-sided sealer is selectively turned on and off. A device sealing device was constructed.

[0007]

In the case of performing both-seal packaging by using the sealing device of the present invention, both sealers of the upper sealing member are set so as to face downward, and the power of all heaters is turned on to heat the sealing surface. Then, both sides of the cut portion of the packaging film are heat-welded by the contact of the sealing surface. On the other hand, when carrying out single-sided packaging, the one side sealer of the upper seal member is set so as to face downward.
Then, of the two sealing surfaces of the lower sealing member, by turning off the power source of the heater for heating the sealing surface facing the upper film holding metal fitting, the film between the film holding metal fitting and the sealing surface facing the film holding metal fitting is turned off. Is not welded, and the film is welded only between the other upper and lower sealing surfaces to enable single-sided seal packaging. By switching the sealer in the upper seal member and controlling the turning on / off of one heater power supply in the lower seal member, it is possible to use both double seal packaging and single open seal packaging.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. 1 and 2 are side views of a sealing device 50 including upper and lower sealing members 51 and 80. The upper seal member 51 has a sealer 52 on both sides and a sealer 53 on one side.
The sealers 52, 53 are 90 ° to each other with respect to the central axis 54.
It is provided at a remote location.

The two-sided sealer 52 is used for both seal packagings, and is provided with two seal surfaces 55, 56 spaced apart from each other with a notch groove 91 in the central portion as a boundary, and the seal surfaces 55, 56. A heater 57 for heating 56, a heat pipe 60 for maintaining a constant heating temperature,
A thermocouple 62 for measuring the temperature of the sealing surface is provided. In addition, in the notch groove 91, the sealing surfaces 55, 5
Cutter 64 for cutting the film between 6
Are arranged. The one-sided sealer 53 is used for a one-sided seal packaging, and is 90 ° with respect to the both-sided sealer 52.
It is provided displaced. The one-sided sealer 53 is divided into two parts with a notch groove 70 at the center as a boundary, and one side thereof is provided with a seal surface 7
A heater 73 for heating 2, a heat pipe 74 for keeping the heating temperature constant, and a thermocouple 75 for measuring the temperature are provided, and the other one slides up and down by a built-in spring (not shown). Film holding metal fittings 7
7 is provided. The film pressing metal fitting 77 is provided with a cooling hole 78 through which a refrigerant flows in order to prevent the temperature from rising due to conduction heat. Water or air is used as the refrigerant. On the other hand, the lower seal member 80 has a single sealer 87 and is used as both double-sided seal packaging and single-sided seal packaging. The sealer 87 has a notch groove 81 in the center and has two sealing surfaces 82, 83 separated by the notch groove 81. Heaters 85 and 86 for heating the seal surfaces 82 and 83 and heat pipes 88 and 89 for maintaining a constant heating temperature are provided in the vicinity of the seal surfaces 82 and 83, respectively.
A thermocouple 90 for measuring the temperature is provided on the side.

In FIG. 2, the cutter 64 is shown as an upper seal member 5.
1 with the sealers 52 and 53 of No. 1 being pulled out, the upper seal member 51 is removed from the position shown in FIG.
The state is shown after the sealers 52 and 53 are switched by rotating the sealer 52 by rotating. In this case, the one-sided sealer 53 for the one-sided seal packaging is selected and faces the lower side sealer 87. The switching of the sealers 52 and 53 is detected by a sensor (not shown), and when the one-sided sealer 53 is selected, the heater 86 of the lower side sealer 87 is powered off. At this time, the sealing surface 83 is not heated and the film pressing metal fitting 77 of the upper sealing member 51 is cooled by the refrigerant passing through the cooling hole 78, so that the film is not sealed. Therefore, single-sided seal packaging is performed.

When carrying out both-seal packaging by using the sealing device 50, as shown in FIG. 1, the both side sealers 52 of the upper sealing member 51 are set so as to face downward,
By turning on the power of the heaters 57, 85, 86,
The sealing surfaces 55, 56, 82, 83 are heated, and the sealing surfaces are brought into contact with each other to thermally weld both sides of the cut portion of the packaging film. On the other hand, when the one-sided seal packaging is performed, as shown in FIG. 2, the one-side sealer 53 of the upper seal member 51 is set so as to face downward. Then, of the two sealing surfaces 82, 83 of the lower sealing member 80, the heater 86 for heating the sealing surface 83 facing the upper film pressing metal fitting 77 is turned off, so that the film pressing metal fitting 77 faces the film pressing metal fitting 77. The film is not welded between the upper and lower sealing surfaces 83 and 82, and the film is welded only between the other upper and lower sealing surfaces 72 and 82, so that a single-sided seal packaging is possible. Switching between the sealers 52 and 53 in the upper seal member 50 and the lower seal member 8
By controlling the turning on / off of one of the heaters 86 at 0, both of the double-sided seal packaging and the single-sided seal packaging can be used.

[0012]

As described above, in the sealing device for a packaging apparatus of the present invention, switching of the sealer in the upper sealing member and turning on of one heater power source in the lower sealing member,
By controlling the cutting, it can be used for both double-sided seal packaging and single-sided seal packaging. Therefore, it is possible to eliminate inconveniences such as an incorrect combination of the upper and lower sealers and forgetting to switch the sealers, and the structure is simplified, so that there is an advantage that the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which a sealing device according to an embodiment of the present invention is used for both seal packages.

FIG. 2 is a side view showing a state in which the sealing device according to the embodiment of the present invention is used in a single-sided seal packaging.

FIG. 3 is a side view of a conventional sealing device.

FIG. 4 is an overall view showing a configuration of a conventional packaging device.

FIG. 5 is a perspective view showing a locus of operation of a conventional sealing device.

FIG. 6 is a perspective view of both seal packaging bags.

FIG. 7 is a perspective view of a one-sided seal packaging bag.

[Explanation of symbols]

51 is an upper seal member, 52 is both side sealers, 53 is one side sealer, 70 is a notched groove, 55 is a sealing surface, 56 is a sealing surface, 57 is a heater, 60 is a heat pipe, 72 is one side sealing surface, and 73 is a heater. , 74 is a heat pipe, 77 is a film pressing metal fitting, 80 is a lower sealing member, 81 is a notch groove, 82 is a sealing surface, 83 is a sealing surface, 85 is a heater, 86 is a heater, 87 is a sealer, and 88 is a heat pipe. , 89 is a heat pipe, and 91 is a notch groove.

Claims (1)

[Claims] 1. A double-sided seal package and a double-sided seal package can be used as both, and the upper and lower seal members repeat contact and separation of their respective seal surfaces while rotating the boxes, and when the seal surfaces come into contact with each other, a packaging film is formed. In the sealing device for a packaging device that welds and cuts, the upper sealing member has both side sealers for both seal packaging and one side sealer for one-sided seal packaging at positions displaced by a predetermined angle with respect to the central axis. The two side sealers are provided with two sealing surfaces separated from each other by a central cutout groove, and a heater and a heat pipe for heating these sealing surfaces, and the one side sealer is provided with a central cutout groove. And a heater and a heat pipe for heating the one-sided sealing surface, and the one-sided sealing surface and the film pressing metal fitting separated from each other by The lower seal member has a single sealer, and the sealer is provided with two seal surfaces separated from each other by a central cutout groove, a heater and a heat pipe for heating these seal surfaces, A sealing device for a packaging device, characterized in that a heater for heating one sealing surface facing a film pressing metal fitting of one side sealer can be selectively turned on and off.