JP2024043081A - sealing device - Google Patents

Abstract

To provide a sealing device that is advantageous for properly sealing bags while suppressing bag shrinkage.SOLUTION: A sealing device 10 has a first pressure support member 21a, a second pressure support member 21b, a heating member 25, and a cooling member 28. While maintaining the closed state of a bag B si that the first pressure support member 21a and the second pressure support member 21b sandwich the sealing area of the bag B, the heating member 25 is moved and positioned in the heating position in the heated sealing mode and the cooling member 28 is moved and positioned in the cooling position in the cooled sealing mode. The heating member 25 positioned in the heating position heats at least one of the first pressure support member 21a and the second pressure support member 21b. The cooling member 28 positioned in the cooling position cools at least one of the first pressure support member 21a and the second pressure support member 21b.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to a sealing device, and more particularly, to a sealing device that can be suitably used, for example, in a packaging machine to seal the opening of a bag containing contents.

The opening of the bag is heated while being sandwiched between a pair of hot plates, and then cooled while being sandwiched between a pair of cooling plates, thereby sealing the opening of the bag (Patent Document 1 and Patent Document 2). reference).

Publication No. 48-32952 Japanese Unexamined Patent Publication No. 7-172403

When the bag is heated to high temperatures during the sealing process, it may shrink and irregular wrinkles may occur. Such irregular wrinkles can impair the appearance of the bag, and can also reduce the seal strength or make it uneven.

The present disclosure has been made in view of the above-mentioned circumstances, and it is an object of the present disclosure to provide a technique advantageous for appropriately sealing a bag while suppressing shrinkage of the bag.

One aspect of the present disclosure is a first pressurizing support member and a second pressurizing support member that are provided so as to be openable and closable, and are placed in a closed state so as to sandwich the sealing area of the bag, thereby releasing the sealing area. A first pressurizing support member and a second pressurizing support member placed in an open state, and a heating member movably provided, the first pressurizing support member and the second pressurizing support member being placed in an open state as shown in FIG. a heating member disposed at a heating position to heat at least one of the members; and a cooling member movably provided, the first pressurizing support member and the second pressurizing support member in the cooling seal mode. a cooling member disposed at a cooling position to cool at least one of the heating seal mode and the cooling seal while the first pressurizing support member and the second pressurizing support member maintain the closed state. The present invention relates to a sealing device in which switching between modes is performed.

The sealing device may include at least one temperature control block that is rotatably provided and includes a heating member and a cooling member, and the at least one temperature control block is arranged in a heating rotation position. By doing so, the heating member may be placed in the heating position, and by placing at least one temperature control block in the cooling rotation position, the cooling member may be placed in the cooling position.

At least one of the first pressure support member and the second pressure support member may have a sealing surface that contacts the intended sealing area while sandwiching the intended sealing area, and a member contact surface located on the opposite side to the sealing surface, and the heating member disposed at the heating position and the cooling member disposed at the cooling position may each contact the member contact surface.

The cooling member may have a flow path through which a cooling medium flows.

The at least one temperature control block may have a cylindrical shape, and may be provided rotatably around the central axis of the cylinder, and the at least one temperature control block may have a plurality of cross sections perpendicular to the central axis. The plurality of cross-sectional areas may include a cross-sectional area of a heating member and a cross-sectional area of a cooling member.

Other aspects of the present disclosure include a first upper heating seal member and a second upper heating seal member that are arranged to be openable and closable, the first upper heating seal member and the second upper heating seal member being placed in a closed state so as to sandwich the intended upper sealing location of the bag and being placed in an open state so as to release the intended upper sealing location; a first lower heating seal member and a second lower heating seal member that are arranged to be openable and closable, the first lower heating seal member and the second lower heating seal member being placed in a closed state so as to sandwich the intended lower sealing location of the bag and being placed in an open state so as to release the intended lower sealing location; a first upper cooling seal member and a second upper cooling seal member that are arranged to be openable and closable, the first upper cooling seal member and the second upper cooling seal member being placed in a closed state so as to sandwich the intended upper sealing location and being placed in an open state so as to release the intended upper sealing location; and a first lower cooling seal member and a second lower cooling seal member that are arranged to be openable and closable, the first lower cooling seal member and the second lower cooling seal member being placed in a closed state so as to sandwich the intended lower sealing location and being placed in an open state so as to release the intended lower sealing location. The present invention relates to a sealing device having a first cooling seal member and a second lower cooling seal member, and in an upper heat seal mode, the first upper heat seal member and the second upper heat seal member are placed in a closed state, and at least one of the first upper heat seal member and the second upper heat seal member heats the upper seal planned area, in a lower heat seal mode, the first lower heat seal member and the second lower heat seal member are placed in a closed state, and at least one of the first lower heat seal member and the second lower heat seal member heats the lower seal planned area, in an upper cool seal mode, the first upper cool seal member and the second upper cool seal member are placed in a closed state, and at least one of the first upper cool seal member and the second upper cool seal member cools the upper seal planned area, and in a lower cool seal mode, the first lower cool seal member and the second lower cool seal member are placed in a closed state, and at least one of the first lower cool seal member and the second lower cool seal member cools the lower seal planned area.

In the lower heat sealing mode, the temperature at which at least one of the first lower heat sealing member and the second lower heat sealing member heats the lower sealing area is the same as the temperature at which the lower heat sealing area is heated in the upper heat sealing mode. The temperature at least one of the member and the second upper heating sealing member may be higher than the temperature at which the upper sealing portion is heated.

At least one of the first upper cooling seal member and the second upper cooling seal member may have a flow path through which a cooling medium flows, and the first lower cooling seal member and the second lower cooling seal member At least one of them may have a flow path through which a cooling medium flows.

According to the present disclosure, it is advantageous to properly seal the bag while suppressing shrinkage of the bag.

FIG. 1 is a perspective view showing an example of a sealing device according to a first embodiment. FIG. 2 is a perspective view showing an example of a sealing device according to the second embodiment. FIG. 3 is a perspective view showing an example of a sealing device according to the third embodiment. FIG. 4 is a diagram showing a modified example of the sealing device according to the third embodiment. FIG. 5 is a diagram showing a modified example of the sealing device according to the third embodiment. FIG. 6 is a diagram showing a modified example of the sealing device according to the third embodiment. FIG. 7 is a side view showing an example of a sealing device according to the fourth embodiment. FIG. 8 is a side view showing an example of a sealing device according to the fourth embodiment. FIG. 9 is a side view showing an example of a sealing device according to the fourth embodiment. FIG. 10 is a diagram showing a modified example of the sealing device according to the fourth embodiment. FIG. 11 is a diagram showing a modified example of the sealing device according to the fourth embodiment. FIG. 12 is a diagram showing a modified example of the sealing device according to the fourth embodiment. FIG. 13 is a diagram showing a modified example of the sealing device according to the fourth embodiment.

Typical embodiments of the present disclosure will be described with reference to the drawings.

[First embodiment]
FIG. 1 is a perspective view showing an example of a sealing device 10 according to the first embodiment.

In the following description, the first horizontal direction Dh1, the second horizontal direction Dh2, and the height direction Dz are directions that are perpendicular to each other. The first horizontal direction Dh1 and the second horizontal direction Dh2 are directions along a horizontal plane, and the height direction Dz is a direction along a vertical plane that is perpendicular to the horizontal plane.

The bag B is supported by a support device (not shown) such as a gripper, is intermittently transported together with the support device, and is intermittently stopped at a sealing station. In the example shown in FIG. 1, the conveyance direction of the bag B is a direction along the second horizontal direction Dh2. The support device is moved by a drive device (not shown).

The material that makes up bag B is not limited, but the intended sealing area Bs of bag B is made of a material such as resin that can be sealed by heating and cooling. In the example shown in Figure 1, the intended sealing area Bs is the upper end of bag B that makes up the mouth.

The sealing device 10 includes a pair of pressurizing support members (a first pressurizing support member 21a and a second pressurizing support member 21b) that are provided so as to be openable and closable, and a pair of temperature control blocks 23 that are provided so that the sealing device 10 can be opened and closed. , a sealing process is performed on the bag B which is intermittently stopped at the sealing station. The first pressure support member 21a and the second pressure support member 21b are driven by a drive device (not shown) and reciprocate in the first horizontal direction Dh1 in mirror symmetry with respect to each other. The two temperature control blocks 23 forming a pair are also driven by a drive device (not shown) and move in the first horizontal direction Dh1 in a mirror-symmetric manner with respect to each other. The first pressurizing support member 21a and one temperature control block 23 may move together in the first horizontal direction Dh1, or may move separately from each other in the first horizontal direction Dh1. Similarly, the second pressure support member 21b and the other temperature control block 23 may move together in the first horizontal direction Dh1, or may move separately from each other in the first horizontal direction Dh1.

The first pressure support member 21a and the second pressure support member 21b are placed in a closed state (see FIG. 1) so as to sandwich the intended sealing area Bs of the bag B, and are placed in an open state (not shown) so as to release the intended sealing area Bs. In the example shown in FIG. 1, each of the first pressure support member 21a and the second pressure support member 21b has a rectangular parallelepiped shape with a rectangular cross section, and has a sealing surface S1 that contacts the intended sealing area Bs while sandwiching the intended sealing area Bs, and a member contact surface S2 that is located on the opposite side of the sealing surface S1 in the first horizontal direction Dh1.

Each temperature control block 23 has a heating member 25 and a cooling member 28, and is provided so as to be movable in the first horizontal direction Dh1 and the height direction Dz. The heating member 25 and the cooling member 28 in each temperature control block 23 are provided so as to be movable as a unit, and are fixed to each other via the insulating section 30. The insulating section 30 has any structure that effectively reduces heat movement and/or heat transfer. The insulating section 30 may, for example, contain a material that has an inherently low thermal conductivity, or may have a vacuum layer. The insulating section 30 located between the heating member 25 and the cooling member 28 suppresses the transfer of thermal energy between the adjacent heating member 25 and cooling member 28, and contributes to suppressing the temperature drop of the heating member 25 and the temperature rise of the cooling member 28.

Each heating member 25 includes a heating element 32 such as a heating wire. The heating element 32 is connected to a power supply device (not shown), and generates heat when energized.

Each cooling member 28 has a built-in refrigerant channel 33 through which a fluid cooling medium (for example, a liquid such as water or a gas such as air) is flowed. The refrigerant flow path 33 is connected to a refrigerant source (for example, a refrigerant tank) (not shown), and a refrigerant is supplied from the refrigerant source.

In the heat seal mode for heat sealing the sealing area Bs of the bag B, the temperature control block 23 is placed at the heat seal mode position P1 (see FIG. 1). In this case, the pair of heating members 25 are placed at the heating position Ph and contact the member contact surfaces S2 of the first pressurizing support member 21a and the second pressurizing support member 21b, and the pair of cooling members 28 are placed at the retracted position Pz. Placed. As a result, the first pressure support member 21a and the second pressure support member 21b are heated by the heating member 25, and heat-seal the sealing portion Bs of the bag B.

In the cooling seal mode for cooling and sealing the intended sealing location Bs of the bag B, the temperature control block 23 is positioned at the cooling seal mode position P2 (not shown). In this case, the pair of cooling members 28 are positioned at the cooling position Pc and contact the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b, and the pair of heating members 25 are positioned at the retracted position Pz. As a result, the first pressure support member 21a and the second pressure support member 21b are cooled by the cooling member 28, and the intended sealing location Bs of the bag B is cooled and sealed.

The movement of the temperature control block 23 between the heating seal mode position P1 and the cooling seal mode position P2 is performed with the first pressure support member 21a and the second pressure support member 21b sandwiching the sealing area Bs of the bag B. This is performed by moving the temperature control block 23 in the height direction Dz while keeping the temperature control block 23 unchanged. As a result, the temperature control block 23 is moved while the first pressure support member 21a and the second pressure support member 21b are maintained in a closed state sandwiching the sealing area Bs, and the heat seal mode and the cooling seal mode are maintained. Switching between modes is performed. Note that while the temperature control block 23 moves in the height direction Dz, the temperature control block 23 may maintain a state in which it is in contact with the member contact surface S2 of the corresponding pressure support member 21a, 21b, or It may be separated from the contact surface S2.

The method for sealing bag B is carried out, for example, as follows.

First, while the bag B is intermittently stopped at the sealing station, the first pressure support member 21a and the second pressure support member 21b are placed in a closed state, and the sealing scheduled location Bs of the bag B is in the first It is held while being sandwiched between the pressure support member 21a and the second pressure support member 21b.

Further, the pair of temperature control blocks 23 are also placed in the closed state, and the two heating members 25 forming the pair are in contact with the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b. As a result, the heat from the heating member 25 is transmitted to the sealing area Bs of the bag B via the temperature control block 23, and the sealing area Bs is heat-sealed.

Note that the transition from the open state to the closed state of the temperature control block 23 may be performed in accordance with the transition from the open state to the closed state of the pressure support members 21a, 21b. For example, even if the transition from the open state to the closed state of the pressure support members 21a, 21b and the temperature control block 23 is performed while the heating member 25 remains in contact with the pressure support members 21a, 21b. good.

Then, each temperature control block 23 moves in the height direction Dz (in this example, downward), and the two paired cooling members 28 come into contact with the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b. As a result, the cooling energy from the cooling members 28 is transmitted to the intended sealing location Bs of the bag B via the temperature control block 23, and the intended sealing location Bs is cooled and sealed.

Thereafter, the first pressure support member 21a and the second pressure support member 21b are placed in an open state together with the temperature control block 23, and the bag B is pressurized by the first pressure support member 21a and the second pressure support member 21b. released from retention. Thereafter, the bag B that has undergone the sealing process is intermittently moved from the sealing station to the next station. Meanwhile, a new bag B that has not undergone the sealing process moves toward the sealing station, stops intermittently at the sealing station, and undergoes the series of sealing processes described above.

As described above, according to this embodiment, the pressure support members 21a, 21b that contact the intended sealing area Bs of the bag B to perform the sealing process directly are provided separately from the heating member 25 and the cooling member 28 that supply the heating energy and the cooling energy for the sealing process. This makes it possible to switch between the heat sealing process and the cooling sealing process without changing the position of the pressure support members 21a, 21b relative to the intended sealing area Bs, and in particular while maintaining the state in which the intended sealing area Bs is pressurized and held from both sides by the pressure support members 21a, 21b. This makes it possible to suppress shrinkage of the bag B (particularly the intended sealing area Bs), which is advantageous for properly sealing the bag B and for preventing excessive damage to the aesthetics of the sealing area.

Further, the pressure support members 21a, 21b can be preheated by the heating member 25 before contacting the bag B. In this case, the pressurizing support members 21a and 21b can contact the bag B in a high temperature state and start heat-sealing the bag B at the same time as the bag B comes into contact with the bag B.

[Second embodiment]
In this embodiment, the same or corresponding elements as in the first embodiment described above are given the same reference numerals, and detailed explanation thereof will be omitted.

FIG. 2 is a perspective view showing an example of the sealing device 10 according to the second embodiment.

In this embodiment, the heating member 25 and the cooling member 28 are provided so as to be movable separately from each other, and do not necessarily move integrally. In the example shown in FIG. 2, the heating member 25 is disposed at the heating position Ph and the retracted position Pz by reciprocating in the height direction Dz. On the other hand, the cooling member 28 is arranged at the cooling position Pc and the retracted position Pz by reciprocating in the first horizontal direction Dh1.

In the heat sealing mode (see FIG. 2), the pair of heating members 25 are arranged at the heating position Ph and contact the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b. The cooling member 28 is disposed at the retracted position Pz and does not contact the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b. The heating member 25 disposed at the heating position Ph and the cooling member 28 disposed at the retreat position Pz are positioned adjacent to each other in the first horizontal direction Dh1. Even if a heat insulating part is provided in the heating member 25 and/or the cooling member 28, and the heat insulating part is arranged between the heating member 25 disposed at the heating position Ph and the cooling member 28 disposed at the retreat position Pz. good.

On the other hand, in the cooling seal mode (not shown), the pair of heating members 25 are arranged at the retracted position Pz and do not contact the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b; The pair of cooling members 28 are arranged at the cooling position Pc and contact the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b. The heating member 25 disposed at the retracted position Pz and the cooling member 28 disposed at the cooling position Pc are positioned adjacent to each other in the height direction Dz. Even if a heat insulating part is provided in the heating member 25 and/or the cooling member 28, and the heat insulating part is arranged between the heating member 25 disposed at the retracted position Pz and the cooling member 28 disposed at the cooling position Pc. good.

The method of sealing bag B performed by the sealing device 10 of this example shown in FIG. 2 is carried out in the same manner as the sealing method performed by the sealing device 10 shown in FIG. 1 described above, for example. However, in this example, when switching between the heating seal mode and the cooling seal mode, the heating member 25 moves in the height direction Dz, the cooling member 28 moves in the first horizontal direction Dh1, and the heating member 25 and cooling member 25 move in the first horizontal direction Dh1. The members 28 move in different directions.

However, in this embodiment as well, switching between the heat sealing mode and the cooling sealing mode is performed while the first pressure support member 21a and the second pressure support member 21b are sandwiching the sealing area Bs of the bag B. This is performed by moving the heating member 25 and the cooling member 28. This makes it possible to suppress the shrinkage of the bag B (particularly the area Bs where sealing is scheduled), which is advantageous for properly sealing the bag B, and is also advantageous for preventing the aesthetic appearance of the sealed area from being excessively impaired. .

[Third embodiment]
In this embodiment, the same or corresponding elements as in the first and second embodiments described above are given the same reference numerals, and detailed explanations thereof will be omitted.

FIG. 3 is a perspective view showing an example of the sealing device 10 according to the third embodiment.

The temperature control block 23 of this embodiment is rotatably provided, and the heating member 25 and cooling member 28 included in the temperature control block 23 move integrally in the rotation direction. The temperature control block 23 is rotated by being driven by a drive device (not shown).

In the example shown in FIG. 3, each of the pair of temperature control blocks 23 has a cylindrical shape and is rotatably provided around the central axis Ax of the cylinder. A cross section perpendicular to the central axis Ax of the temperature control block 23 includes a plurality of cross-sectional areas, and the cross-sectional areas of the heating member 25 and the cooling member 28 are included in the plurality of cross-sectional areas. In the example shown in FIG. 3, each of the cross-sectional area of the heating member 25 and the cross-sectional area of the cooling member 28 has a fan shape with a central angle of 90 degrees with respect to the central axis Ax.

When the temperature control block 23 is placed in the heating rotation position (i.e., the heating seal mode position P1; see FIG. 3), the heating member 25 is placed in the heating position Ph and the cooling member 28 is placed in the retracted position Pz. On the other hand, when the temperature control block 23 is placed in the cooling rotation position (i.e., the cooling seal mode position; not shown), the heating member 25 is placed in the retracted position Pz and the cooling member 28 is placed in the cooling position Pc.

In the heat sealing mode (see FIG. 3), the pair of heating members 25 are arranged at the heating position Ph and contact the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b. The cooling member 28 is disposed at the retracted position Pz and does not come into contact with the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b. On the other hand, in the cooling seal mode (not shown), the pair of heating members 25 are arranged at the retracted position Pz and do not contact the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b; The pair of cooling members 28 are arranged at the cooling position Pc and contact the member contact surfaces S2 of the first pressure support member 21a and the second pressure support member 21b.

The sealing method for the bag B performed by the sealing device 10 of this example shown in FIG. 3 is performed in the same manner as the sealing method performed by the sealing device 10 shown in FIG. 1 described above. However, in this example, when switching between the heat seal mode and the cool seal mode, the temperature control block 23 rotates about the central axis Ax. Note that while the temperature control block 23 is rotating, the temperature control block 23 may maintain contact with the member contact surface S2 of the corresponding pressure support member 21a, 21b, or may move away from the member contact surface S2.

Switching between the heat seal mode and the cool seal mode is performed by heating the temperature control block 23 while the first pressure support member 21a and the second pressure support member 21b sandwich the sealing area Bs of the bag B. This is done by rotating between the seal mode position P1 and the cooling seal mode position. This makes it possible to suppress the shrinkage of the bag B (particularly the area Bs where sealing is scheduled), which is advantageous for properly sealing the bag B, and is also advantageous for preventing the aesthetic appearance of the sealed area from being excessively impaired. .

Further, the rotational movement of the temperature control block 23 about the central axis Ax can be performed without any translational movement of the temperature control block 23, and without substantially changing the occupied range of the temperature control block 23. Therefore, the sealing device 10 of this embodiment is also advantageous in keeping the movement area of the temperature control block 23 small.

<Modification>
In the example shown in FIG. 3 described above, two paired temperature adjustment blocks 23 are provided, but only one temperature adjustment block 23 may be provided.

4 to 6 are diagrams showing a modified example of the sealing device 10 according to the third embodiment. FIG. 4 shows the sealing device 10 placed in a non-sealing mode, FIG. 5 shows the sealing device 10 placed in a heated sealing mode, and FIG. 6 shows the sealing device 10 placed in a cooled sealing mode. .

In this modification, the same or corresponding elements as those in the first to third embodiments described above are given the same reference numerals, and detailed explanation thereof will be omitted.

In this modification, the temperature control block 23 for directly heating and cooling the second pressure support member 21b is provided, but the temperature control block 23 for directly heating and cooling the first pressure support member 21a is provided. A temperature control block 23 is not provided.

In the seal device 10 shown in FIGS. 4 to 6, a stand 51 is fixed on a fixedly provided support base 50, and a seal box 53 is fixed to the upper end of the stand 51. A connecting drive shaft 52 extends through the inner space of the stand 51. The lower end of the connecting drive shaft 52 is connected to a drive source (not shown), and the upper end of the connecting drive shaft 52 is rotatably connected to a drive lever 54 provided in the seal box 53.

The drive lever 54 is rotatably provided within the seal box 53 and is connected to a first horizontal drive shaft 55 and a second horizontal drive shaft 56 in addition to the connection drive shaft 52 . The drive lever 54 shown in FIGS. 4 to 6 has a T-shape and is connected to a first horizontal drive shaft 55 via a link member rotatably attached to the drive lever 54. The second horizontal drive shaft 56 is connected to the second horizontal drive shaft 56 via another link member rotatably attached to the second horizontal drive shaft 56 .

The first horizontal drive shaft 55 and the second horizontal drive shaft 56 are supported by the seal box 53 and a bearing member 57 attached to the seal box 53 so as to be movable in the first horizontal direction Dh1. A first pressurizing support member 21a is attached to the tip of the first horizontal drive shaft 55 via a mounting plate 58. The first pressurizing support member 21a moves integrally with the first horizontal drive shaft 55 in the first horizontal direction Dh1. The temperature control block 23 and the second pressure support member 21b are attached to the tip of the second horizontal drive shaft 56 via a block support portion 61. The temperature control block 23 and the second pressure support member 21b move integrally with the second horizontal drive shaft 56 in the first horizontal direction Dh1.

The second pressure support member 21b is fixedly attached to the block support portion 61. The temperature control block 23 having the heating member 25 and the cooling member 28 is rotatably provided around the central axis Ax with respect to the block support part 61, and the temperature control drive part 59 (attached to the block support part 61) For example, it is rotationally driven by an air cylinder).

The coupling drive shaft 52 is reciprocated up and down in the height direction Dz by the power provided from the drive source, and the drive lever 54 is reciprocated in accordance with the vertical movement of the coupling drive shaft 52. According to the rotation of the drive lever 54, the first horizontal drive shaft 55 and the second horizontal drive shaft 56 move in opposite directions along the first horizontal direction Dh1. Specifically, when the connecting drive shaft 52 moves upward in FIG. 4, the drive lever 54 rotates to the right, the first horizontal drive shaft 55 moves to the right, and the second horizontal drive shaft 56 moves to the left. As a result, the first pressure support member 21a and the second pressure support member 21b move in the first horizontal direction Dh1 so as to approach each other. On the other hand, when the connecting drive shaft 52 moves downward, the drive lever 54 rotates to the left, the first horizontal drive shaft 55 moves to the left, and the second horizontal drive shaft 56 moves to the right, and as a result, The first pressure support member 21a and the second pressure support member 21b move in the first horizontal direction Dh1 so as to move away from each other.

Bag B is held by a corresponding support device 90 (eg, a pair of grippers gripping the sides of bag B), moves with the corresponding support device 90, and is stopped intermittently at sealing stations. While the bag B moves toward the sealing station and is placed at the sealing station, the connecting drive shaft 52 is positioned relatively downward, and the first pressure support member 21a and the second pressure support member 21b are opened. (see Figure 4). The bag B (particularly the area to be sealed) enters the space between the first pressure support member 21a and the second pressure support member 21b that are placed in the open state, and is connected to the first pressure support member 21a. It is positioned between the second pressurizing support member 21b.

Then, with the bag B (particularly the area to be sealed) positioned between the first pressure support member 21a and the second pressure support member 21b, the connection drive shaft 52 is moved upward and moved relatively upward. By being positioned, the first pressure support member 21a and the second pressure support member 21b are placed in a closed state, and the bag B (particularly the area to be sealed) is placed in the first pressure support member 21a and the second pressure support member 21b. 21b and held under pressure (see FIG. 5). As a result, the bag B is held not only by the support device 90 but also by the first pressurizing support member 21a and the second pressurizing support member 21b, and displacement of the bag B is suppressed.

Then, the sealing device 10 is placed in the heat sealing mode, and the bag B (particularly the area to be sealed) undergoes the heat sealing process while being sandwiched between the first pressure support member 21a and the second pressure support member 21b. That is, the heating member 25 of the temperature control block 23 contacts the second pressure support member 21b and heats the second pressure support member 21b, so that the bag B (particularly the area to be sealed) is removed from the second pressure support member 21b. Heat is transferred to the bag B, and the sealing area of the bag B is heated and sealed.

In this example, before the sealing device 10 is placed in the heating sealing mode shown in FIG. The second pressure support member 21b is heated by contacting the pressure support member 21b. Then, by transitioning the second pressurizing support member 21b from the open state to the closed state, the preheated second pressurizing support member 21b comes into contact with the area of the bag B to be sealed. In this way, the heat sealing mode of this example is started simultaneously with the contact of the first pressure support member 21a and the second pressure support member 21b with the bag B.

Thereafter, the cooling sealing mode is performed while the bag B (particularly the area to be sealed) is kept sandwiched between the first pressure support member 21a and the second pressure support member 21b (see FIG. 6). That is, the temperature control block 23 is rotated by the temperature control drive unit 59, and the cooling member 28 of the temperature control block 23 contacts the second pressure support member 21b to cool the second pressure support member 21b. Cooling energy is transmitted from the second pressurizing support member 21b to the bag B (particularly the area to be sealed). During the transition from the heat sealing mode to the cooling sealing mode (that is, while the temperature control drive unit 59 is rotating the temperature control block 23), the sealing portion of the bag B is the first pressurizing support member 21a and the second pressure support member 21a. The bag B remains pressurized and held by the pressure support member 21b, and there is no relative movement (shift) of the bag B with respect to the first pressure support member 21a and the second pressure support member 21b.

When the cooling seal mode ends, the connecting drive shaft 52 is moved downward and positioned relatively downward, so that the first pressure support member 21a and the second pressure support member 21b transition from the closed state to the open state. , the bag B is released from the pressure held by the first pressure support member 21a and the second pressure support member 21b. Thereafter, the bag B that has undergone the sealing process moves intermittently to the next station together with the corresponding support device 90. Meanwhile, a new bag B that has not undergone the sealing process moves toward the sealing station together with the corresponding support device 90, stops intermittently at the sealing station, and undergoes the series of sealing processes described above.

[Fourth embodiment]
In this embodiment, the same or corresponding elements as in the first to third embodiments described above are given the same reference numerals, and detailed explanation thereof will be omitted.

7 to 9 are side views showing an example of the sealing device 10 according to the fourth embodiment.

In this embodiment, the heating sealing member and the cooling sealing member are directly connected to each other without using a pressure support member (see first pressure support member 21a and second pressure support member 21b shown in FIGS. 1 to 6). It contacts bag B and performs the sealing process.

As the heat seal members, a first upper heat seal member 71 and a second upper heat seal member 72 that can be opened and closed, and a first lower heat seal member 73 and a second lower heat seal member 74 that can be opened and closed are provided. On the other hand, as cooling seal members, a first upper cooling seal member 75 and a second upper cooling seal member 76 that can be opened and closed, and a first lower cooling seal member 77 and a second lower cooling seal member 78 that can be opened and closed are provided. It will be done. Each of the heat seal members (first upper heat seal member 71 to second lower heat seal member 74) has a heating element 32, and each of the heat seal members (first upper heat seal member 75 to second lower heat seal member 74) has a heating element 32. 78) each has a coolant flow path 33 through which a coolant flows.

The heat generation temperature of the heating element 32 and the temperature of the coolant flowing through the coolant flow path 33 are not limited, and the heat generation temperature may be different between the heat generating elements 32, or the temperature of the coolant may be different between the coolant flow paths 33. You can. For example, the temperature at which at least one of the first lower heating sealing member 73 and the second lower heating sealing member 74 heats the lower sealing scheduled location Bs2 is different from that of the first upper heating sealing member 71 and the second upper heating sealing member 74. The temperature at least one of the sealing members 72 may be higher than the temperature at which the upper sealing scheduled location Bs1 is heated. In this case, the temperature at which the first lower heat seal member 73 and the second lower heat seal member 74 heat the lower seal scheduled location Bs2 in the below-described lower heat seal mode is set to The temperature can be made higher than the temperature at which the upper heating sealing member 71 and the second upper heating sealing member 72 heat the upper sealing scheduled location Bs1.

The first upper heating sealing member 71 and the second upper heating sealing member 72 are placed in a closed state so as to sandwich the upper sealing scheduled portion Bs1 of the bag B, and are placed in an open state so as to release the upper sealing scheduled portion Bs1. . The first lower heating sealing member 73 and the second lower heating sealing member 74 are placed in a closed state so as to sandwich the lower sealing area Bs2 of the bag B, and are opened to release the lower sealing area Bs2. placed in a state. In the examples shown in FIGS. 7 to 9, the heating seal members 71 to 74 reciprocate in the first horizontal direction Dh1.

The first upper cooling seal member 75 and the second upper cooling seal member 76 are placed in a closed state so as to sandwich the upper sealing scheduled location Bs1, and are placed in an open state so as to open the upper sealing scheduled location Bs1. The first lower cooling seal member 77 and the second lower cooling seal member 78 are placed in a closed state so as to sandwich the lower sealing area Bs2, and are placed in an open state so as to release the lower sealing area Bs2. It will be destroyed. In the examples shown in FIGS. 7 to 9, the cooling seal members 75 to 78 are arranged in diagonally upward and diagonally downward directions (that is, perpendicular to the second horizontal direction Dh2 and relative to the first horizontal direction Dh1 and the height direction Dz). move back and forth in a diagonal direction).

The upper seal scheduled location Bs1 is located above the lower sealed scheduled location Bs2, and may be adjacent to the lower sealed scheduled location Bs2 without a gap, or may be apart from the lower sealed scheduled location Bs2. good.

The method for sealing bag B is carried out, for example, as follows.

First, while the bag B is intermittently stopped at the sealing station, the first upper heating sealing member 71 and the second upper heating sealing member 72 are placed in the closed state, and the first lower heating sealing member 73 and the second upper heating sealing member 73 are placed in a closed state. The lower heating seal member 74 is placed in the closed state (see FIG. 7). As a result, the first upper heating sealing member 71 and the second upper heating sealing member 72 are held under pressure with the upper sealing scheduled portion Bs1 sandwiched between them, and the first lower heating sealing member 73 and the second lower heating sealing member 74 are held under pressure. The side seal scheduled location Bs2 is sandwiched and held under pressure. The first upper heating sealing member 71 and the second upper heating sealing member 72 heat-seal the upper sealing area Bs1, and the first lower heating sealing member 73 and the second lower heating sealing member 74 heat seal the lower sealing area Bs1. Heat seal Bs2. There is an upper heat seal mode in which the first upper heat seal member 71 and the second upper heat seal member 72 heat the upper seal scheduled location Bs1, and the first lower heat seal member 73 and the second lower heat seal member 74 heat the lower heat seal member 74. The lower heating sealing mode for heating the sealing scheduled location Bs2 may be started at the same timing, or one may be started prior to the other.

Thereafter, the first lower heating seal member 73 and the second lower heating sealing member 74 transition from the closed state to the open state, and the first lower cooling seal member 77 and the second lower cooling seal member 78 change from the open state. Transition to the closed state (see FIG. 8). This ends the lower heat sealing mode, and the first lower cooling seal member 77 and the second lower cooling seal member 78 sandwich and hold the lower sealing area Bs2 under pressure, and the lower sealing area Bs2 is held under pressure. A lower cooling seal mode for cooling is initiated.

Then, the first upper heating seal member 71 and the second upper heating seal member 72 transition from a closed state to an open state, and the first upper cooling seal member 75 and the second upper cooling seal member 76 transition from an open state to a closed state (see FIG. 9). This ends the upper heating seal mode, and the upper cooling seal mode begins, in which the first upper cooling seal member 75 and the second upper cooling seal member 76 clamp and pressurize the upper intended sealing area Bs1 while cooling the upper intended sealing area Bs1.

Thereafter, the first upper cooling seal member 75 to the second lower cooling seal member 78 transition from the closed state to the open state. As a result, the bag B is released from the first upper heating sealing member 71 to the second lower heating sealing member 74 and the first upper cooling sealing member 75 to the second lower cooling sealing member 78, and the bag B is set to the upper cooling sealing mode. Cool seal mode ends. The upper cooling seal mode and the lower cooling seal mode may end at the same timing, or one may end before the other.

Thereafter, the bag B that has undergone the sealing process is intermittently moved from the sealing station to the next station. Meanwhile, a new bag B that has not undergone the sealing process moves toward the sealing station, stops intermittently at the sealing station, and undergoes the series of sealing processes described above.

As described above, according to the present embodiment, the sealing scheduled location of the bag B is divided into a plurality of regions (upper sealing scheduled location Bs1 and lower sealing scheduled location Bs2), and the cooling sealing mode for these regions is changed from the heating sealing mode to the cooling sealing mode. Switching to the modes is performed sequentially. As a result, a part of the area to be sealed is covered by the heating sealing member (in the example shown in FIG. 8, the first upper heating sealing member 71 and the second upper heating sealing member 72) or the cooling sealing member (in the example shown in FIG. 9, the In the state held by the first lower cooling seal member 77 and the second lower cooling seal member 78), the heating sealing mode for other areas is switched to the cooling sealing mode. Furthermore, each divided area of the bag B at the scheduled sealing location can be heated by the heating sealing member and then immediately cooled by the cooling sealing member. This makes it possible to suppress the shrinkage of the bag B (particularly the area Bs where sealing is scheduled), which is advantageous for properly sealing the bag B, and is also advantageous for preventing the aesthetic appearance of the sealed area from being excessively impaired. .

<Modified example>
In the example shown in FIGS. 7 and 8 described above, the bag B is heated from both sides by the pair of heating seal members, and the bag B is cooled from both sides by the pair of cooling seal members. The sealing process may be performed by heating and cooling bag B only from one side.

10 to 13 are diagrams showing a modified example of the sealing device 10 according to the fourth embodiment. 10 shows the sealing device 10 placed in the non-sealing mode, FIG. 11 shows the sealing device 10 placed in the heated sealing mode (upper heated sealing mode and lower heated sealing mode), and FIG. 12 shows the sealing device 10 placed in the upper heated sealing mode. 13 shows the sealing apparatus 10 placed in a cooled sealing mode, and FIG. 13 shows the sealing apparatus 10 placed in a lower cooling sealing mode.

In this modification, the same or corresponding elements as those in the first to third embodiments described above are given the same reference numerals, and detailed explanation thereof will be omitted.

The sealing device 10 of this modification includes a stand 51, a connecting drive shaft 52, a seal box 53, a drive lever 54, a first horizontal drive shaft 55, a second horizontal drive It includes a shaft 56, a bearing member 57, a mounting plate 58, and a first pressurizing support member 21a.

A seal unit 70 is attached to the tip of the second horizontal drive shaft 56, and the seal unit 70 moves integrally with the second horizontal drive shaft 56 in the first horizontal direction Dh1. The seal unit 70 includes an upper heating seal member 81 , a lower heating seal member 82 , an upper cooling seal member 83 , a lower cooling seal member 84 , an upper seal drive section 85 , and a lower seal drive section 86 .

The upper seal drive unit 85 (for example, an air cylinder) changes the relative positions of the upper heating seal member 81 and the upper cooling seal member 83 in the first horizontal direction Dh1. In the upper heat sealing mode, the upper heat sealing member 81 protrudes in the first horizontal direction Dh1 (particularly on the bag B side that is intermittently stopped at the sealing station) than the upper cooling sealing member 83; protrudes in the first horizontal direction Dh1 (particularly toward the side of the bag B that is intermittently stopped at the sealing station) than the upper heating sealing member 81. The protruding position of the upper heat sealing member 81 (particularly the distal end surface) in the upper heat sealing mode and the protruding position of the upper cooling seal member 83 (particularly the distal end surface) in the upper cooling sealing mode are substantially the same.

Similarly, the lower seal drive unit 86 (for example, an air cylinder) changes the relative positions of the lower heating seal member 82 and the lower cooling seal member 84 in the first horizontal direction Dh1. In the lower heat sealing mode, the lower heat sealing member 82 protrudes in the first horizontal direction Dh1 (particularly on the bag B side that is intermittently stopped at the sealing station) than the lower cooling sealing member 84; The side cooling sealing member 84 protrudes further in the first horizontal direction Dh1 (particularly toward the side of the bag B that is intermittently stopped at the sealing station) than the lower heating sealing member 82. The protruding position of the lower heating seal member 82 (especially the tip surface) in the lower heating sealing mode and the protruding position of the lower cooling sealing member 84 (especially the tip surface) in the lower cooling sealing mode are substantially the same. be.

In this modification, the method of sealing the bag B is carried out, for example, as follows.

First, in a state where the bag B (particularly the area to be sealed) is positioned between the first pressure support member 21a and the second pressure support member 21b at the sealing station, the connection drive shaft 52 is moved upward and relative to each other. is positioned upwards. As a result, the first pressure support member 21a and the seal unit 70 transition from the open state (see FIG. 10) to the closed state (see FIG. 11).

The seal unit 70 shown in FIG. 10 is placed in an upper heating mode and a lower heating mode by an upper seal drive section 85 and a lower seal drive section 86 before reaching the closed state (for example, at the time of the open state). That is, the upper heating seal member 81 and the lower heating sealing member 82 are heated by the heating element 32, and the upper heating sealing member 81 and the lower heating sealing member 82 are made to protrude beyond the upper cooling sealing member 83 and the lower cooling sealing member 84. It will be done. Therefore, by placing the first pressure support member 21a and the seal unit 70 in the closed state, the sealing scheduled locations (upper side sealing location and lower side sealing location) of the bag B are connected to the first pressure support member 21a. It is sandwiched between the upper heat sealing member 81 and the lower heat sealing member 82 and is held under pressure to be heat sealed. In this way, in the sealing device 10 shown in FIGS. 10 and 11, the upper heat sealing mode and the lower heat sealing mode are started at the same time as the first pressure support member 21a and the seal unit 70 are placed in the closed state. .

After that, as shown in FIG. 12, the upper seal drive unit 85 moves the upper heat seal member 81 away from the bag B while bringing the upper cool seal member 83 into contact with the intended sealing area of the bag B (particularly the intended upper sealing area). This ends the upper heat seal mode and starts the upper cool seal mode. Meanwhile, the lower heat seal mode is maintained, and the lower heat seal member 82 continues to be in contact with the intended sealing area of the bag B (particularly the intended lower sealing area).

Thereafter, as shown in FIG. 13, while the lower heating sealing member 82 is separated from the bag B by the lower seal driving unit 86, the lower cooling sealing member 84 is moved to the sealing area of the bag B (especially the lower sealing area). area). This ends the lower heating sealing mode and starting the lower cooling sealing mode. On the other hand, the upper cooling sealing mode is maintained, and the upper cooling sealing member 83 continues to be in contact with the area of the bag B to be sealed (particularly the upper sealing area).

When the cooling seal mode ends, the connecting drive shaft 52 is moved downward and positioned relatively downward, so that the first pressurizing support member 21a and the seal unit 70 transition from the closed state to the open state, and the bag B is opened. , released from the pressure held by the first pressure support member 21a and the seal unit 70. Thereafter, the bag B that has undergone the sealing process moves intermittently to the next station together with the corresponding support device 90. Meanwhile, a new bag B that has not undergone the sealing process moves toward the sealing station together with the corresponding support device 90, stops intermittently at the sealing station, and undergoes the series of sealing processes described above.

In this modification, the heat sealing processing time for the lower sealing scheduled portion of the bag B is longer than the heat sealing processing time for the upper sealing scheduled portion. Therefore, the upper seal portion has a relatively small degree of heat shrinkage (and thus the occurrence of wrinkles due to heat shrinkage), but has a relatively low seal strength. On the other hand, the lower seal portion has a relatively large degree of heat shrinkage (and thus the generation of wrinkles due to heat shrinkage), but has a relatively high seal strength. In this way, the sealed portion of bag B has both a portion with excellent aesthetics (upper seal portion) and a portion with excellent seal strength (lower seal portion). In particular, it is possible to maintain high seal strength in the lower seal part near the contents in bag B, while suppressing heat shrinkage and wrinkles in the upper seal part, which is easily visible to the public, thereby improving the seal strength and aesthetic appearance of the sealed part. can be achieved in a well-balanced manner.

Note that as another method for differentiating the sealing strength and thermal contraction between the divided regions of the sealing portion of the bag B, a temperature difference may be created between the upper heating sealing member 81 and the lower heating sealing member 82. For example, the heating temperature of the heating element 32 of the upper heating sealing member 81 is set lower than the heating temperature of the heating element 32 of the lower heating sealing member 82, and the heating temperature of the lower heating sealing member 82 is set to be lower than that of the heating element 32 of the lower heating sealing member 82. The heating temperature may be higher than the heating temperature of 81. In this case as well, it is possible to ensure a large seal strength in the lower seal portion while making the degree of heat shrinkage (and thus the generation of wrinkles due to heat shrinkage) in the upper seal portion relatively small.

[Application example]
Demand for easily recyclable mono-material bags is increasing as awareness of environmental conservation increases. Not only bags made of only a single material, but also bags in which most (specifically, 50% or more) of the constituent materials are made of a single material are classified as monomaterial bags. Monomaterial bags are sometimes made by combining multiple structures (such as film members) that have undergone various processing and have mutually different properties (for example, oxygen permeability and light blocking properties).

A monomaterial bag that undergoes a heat sealing process can include "components that are relatively easy to melt by heat sealing" and "components that are relatively difficult to melt by heat sealing" that are made from a common main material. . Such monomaterial bags tend to have smaller melting temperature differences between the components than non-monomaterial bags that include multiple components made from different materials. Therefore, there is a tendency for the heat sealing treatment for monomaterial bags to be performed under more severe temperature conditions.

The sealing device 10 and sealing method according to each of the embodiments and modifications described above can be suitably applied to monomaterial bags that require heat sealing under such severe temperature conditions.

A monomaterial bag to which the sealing device 10 and sealing method according to each of the above-described embodiments and modifications can be applied is, for example, made of PE (polyethylene), PET (polyethylene terephthalate), or PP (polypropylene) as the main material. % or more, for example, 70% or more, 80% or more, or 90% or more. The higher the content of the main material, the more severe the temperature conditions required for heat sealing tend to be. Therefore, the sealing device 10 and sealing method according to each of the embodiments and modifications described above can be applied more effectively as the content of the main material in the monomaterial bag increases.

It should be noted that the embodiments and modifications disclosed in this specification are merely illustrative in all respects and should not be construed as limiting. The above-described embodiments and modifications may be omitted, substituted, or modified in various forms without departing from the scope and spirit of the appended claims. For example, the above-described embodiments and modifications may be combined in whole or in part, and embodiments other than those described above may be combined with the above-described embodiments or modifications. In addition, the effects of the present disclosure described in this specification are merely illustrative, and other effects may be obtained.

The technical category that embodies the above-mentioned technical idea is not limited. For example, the above technical idea may be embodied by a computer program for causing a computer to execute one or more procedures (steps) included in the method of manufacturing or using the above-described device. Further, the above-mentioned technical idea may be embodied by a computer-readable non-transitory recording medium on which such a computer program is recorded.

[Additional Notes]
The present disclosure may also have the following configuration.

[Item 1]
A first pressurizing support member and a second pressurizing support member are provided so as to be openable and closable, and are placed in a closed state so as to sandwich the sealing area of the bag, and are placed in an open state so as to release the sealing area. a first pressure support member and a second pressure support member,
a movably provided heating member, the heating member being disposed at a heating position for heating at least one of the first pressure support member and the second pressure support member in a heat sealing mode; ,
a cooling member that is movably provided and is disposed at a cooling position that cools at least one of the first pressure support member and the second pressure support member in the cooling seal mode; , comprising;
Switching between the heat seal mode and the cool seal mode is performed while the first pressure support member and the second pressure support member maintain a closed state.
sealing device.

[Item 2]
At least one temperature control block rotatably provided, comprising at least one temperature control block including the heating member and the cooling member,
The at least one temperature control block is placed in the heating rotation position, so that the heating member is placed in the heating position,
The at least one temperature control block is placed in the cooling rotation position, so that the cooling member is placed in the cooling position.
The sealing device according to item 1.

[Item 3]
At least one of the first pressure support member and the second pressure support member,
a sealing surface that contacts the scheduled sealing area while sandwiching the scheduled sealing area;
a member contact surface located on the opposite side to the sealing surface;
has
the heating member disposed at the heating position and the cooling member disposed at the cooling position each contact the member contact surface;
The sealing device according to item 1 or 2.

[Item 4]
The sealing device according to any one of items 1 to 3, wherein the cooling member has a flow path through which a cooling medium flows.

[Item 5]
The at least one temperature control block has a cylindrical shape and is rotatably provided around a central axis of the cylindrical column,
A cross section perpendicular to the central axis of the at least one temperature control block includes a plurality of cross-sectional areas, and the plurality of cross-sectional areas include a cross-sectional area of the heating member and a cross-sectional area of the cooling member.
The sealing device according to item 2 and any of items 3 and 4 that quote item 2.

[Item 6]
A first upper heat sealing member and a second upper heat sealing member are provided so as to be openable and closable, and are placed in a closed state so as to sandwich the upper side sealing area of the bag, and are in an open state so as to release the upper side sealing area. a first upper heat sealing member and a second upper heat sealing member placed in the
a first lower heat sealing member and a second lower heat sealing member that are provided so as to be openable and closable, and are placed in a closed state so as to sandwich the lower side sealing area of the bag, and release the lower side sealing area; a first lower heating sealing member and a second lower heating sealing member placed in an open state so as to
A first upper cooling seal member and a second upper cooling seal member are provided so as to be openable and closable, and are placed in a closed state so as to sandwich the upper sealing intended area, and are in an open state so as to release the upper sealing intended area. a first upper cooling seal member and a second upper cooling seal member disposed;
A first lower cooling seal member and a second lower cooling seal member are provided so as to be openable and closable, and are placed in a closed state so as to sandwich the lower sealing area, and are configured to release the lower sealing area. a first lower cooling seal member and a second lower cooling seal member that are placed in an open state,
In the upper heat sealing mode, the first upper heat sealing member and the second upper heat sealing member are placed in a closed state, and at least one of the first upper heat sealing member and the second upper heat sealing member heats the upper sealing area,
In the lower heat sealing mode, the first lower heat sealing member and the second lower heat sealing member are placed in a closed state, and the first lower heat sealing member and the second lower heat sealing member are at least one of heating the lower sealing planned area;
In the upper cooling seal mode, the first upper cooling seal member and the second upper cooling seal member are placed in a closed state, and at least one of the first upper cooling seal member and the second upper cooling seal member cools the upper sealing area,
In the lower cooling seal mode, the first lower cooling seal member and the second lower cooling seal member are placed in a closed state, and among the first lower cooling seal member and the second lower cooling seal member, at least one of cooling the lower sealing scheduled location;
sealing device.

[Item 7]
In the lower heat sealing mode, the temperature at which at least one of the first lower heat sealing member and the second lower heat sealing member heats the lower sealing scheduled portion is set in the upper heat sealing mode. The sealing device according to item 6, wherein at least one of the first upper heating sealing member and the second upper heating sealing member has a temperature higher than a temperature at which the upper sealing scheduled portion is heated.

[Item 8]
At least one of the first upper cooling seal member and the second upper cooling seal member has a flow path through which a cooling medium flows;
8. The seal device according to item 6 or 7, wherein at least one of the first lower cooling seal member and the second lower cooling seal member has a flow path through which a cooling medium flows.

Reference Signs List 10 sealing device, 21a first pressure support member, 21b second pressure support member, 23 temperature control block, 25 heating member, 28 cooling member, 30 heat insulation section, 32 heating element, 33 refrigerant flow path, 50 support stand, 51 Stand, 52 Connected drive shaft, 53 Seal box, 54 Drive lever, 55 First horizontal drive shaft, 56 Second horizontal drive shaft, 57 Bearing member, 58 Mounting plate, 59 Temperature control drive section, 61 Block support section, 70 Seal unit, 71 first upper heating seal member, 72 second upper heating sealing member, 73 first lower heating sealing member, 74 second lower heating sealing member, 75 first upper cooling sealing member, 76 second upper cooling Seal member, 77 first lower cooling seal member, 78 second lower cooling seal member, 81 upper heating seal member, 82 lower heating seal member, 83 upper cooling seal member, 84 lower cooling seal member, 85 upper seal Drive unit, 86 Lower seal drive unit, 90 Support device, Ax central axis, B bag, Bs scheduled sealing area, Bs1 upper sealing area, Bs2 lower sealing area, Dh1 first horizontal direction, Dh2 second horizontal direction , Dz height direction, P1 heating seal mode position, P2 cooling seal mode position, Pc cooling position, Ph heating position, Pz retreat position, S1 sealing surface, S2 member contact surface

Claims (8)

a first pressure support member and a second pressure support member that are provided so as to be able to be opened and closed, the first pressure support member and the second pressure support member that are placed in a closed state so as to sandwich a portion of the bag to be sealed, and that are placed in an open state so as to release the portion to be sealed;
a movably provided heating member, the heating member being disposed at a heating position where the heating member heats at least one of the first pressure support member and the second pressure support member in a heat seal mode;
a movably provided cooling member, the cooling member being disposed at a cooling position where the cooling member cools at least one of the first pressure support member and the second pressure support member in a cooling seal mode;
The first pressure support member and the second pressure support member are maintained in a closed state, and the heat seal mode and the cool seal mode are switched between.
Sealing device. At least one temperature control block rotatably provided, comprising at least one temperature control block including the heating member and the cooling member,
The at least one temperature control block is placed in the heating rotation position, so that the heating member is placed in the heating position,
The at least one temperature control block is placed in the cooling rotation position, so that the cooling member is placed in the cooling position.
A sealing device according to claim 1. At least one of the first pressure support member and the second pressure support member,
a sealing surface that contacts the scheduled sealing area while sandwiching the scheduled sealing area;
a member contact surface located on the opposite side of the sealing surface;
has
the heating member disposed at the heating position and the cooling member disposed at the cooling position each contact the member contact surface;
A sealing device according to claim 1 or 2. The sealing device according to claim 1 or 2, wherein the cooling member has a flow path through which a cooling medium flows. The at least one temperature control block has a cylindrical shape and is rotatably provided around a central axis of the cylindrical column,
A cross section perpendicular to the central axis of the at least one temperature control block includes a plurality of cross-sectional areas, and the plurality of cross-sectional areas include a cross-sectional area of the heating member and a cross-sectional area of the cooling member.
A sealing device according to claim 2. a first upper heat sealing member and a second upper heat sealing member that are provided so as to be able to be opened and closed, the first upper heat sealing member and the second upper heat sealing member being placed in a closed state so as to sandwich an upper portion of the bag to be sealed, and being placed in an open state so as to release the upper portion to be sealed;
a first lower heat sealing member and a second lower heat sealing member that are provided so as to be able to be opened and closed, the first lower heat sealing member and the second lower heat sealing member being placed in a closed state so as to sandwich a portion of the bag to be sealed on the lower side and being placed in an open state so as to release the portion of the bag to be sealed on the lower side;
a first upper cooling seal member and a second upper cooling seal member that are provided so as to be able to open and close, the first upper cooling seal member and the second upper cooling seal member being placed in a closed state so as to sandwich the intended upper sealing location and being placed in an open state so as to release the intended upper sealing location;
a first lower cooling seal member and a second lower cooling seal member that are provided so as to be able to open and close, the first lower cooling seal member and the second lower cooling seal member being placed in a closed state so as to sandwich the intended lower sealing location and being placed in an open state so as to release the intended lower sealing location;
In an upper heat seal mode, the first upper heat seal member and the second upper heat seal member are placed in a closed state, and at least one of the first upper heat seal member and the second upper heat seal member heats the upper seal planned location;
In a lower heat sealing mode, the first lower heat sealing member and the second lower heat sealing member are placed in a closed state, and at least one of the first lower heat sealing member and the second lower heat sealing member heats the lower seal planned location;
In an upper cooling seal mode, the first upper cooling seal member and the second upper cooling seal member are placed in a closed state, and at least one of the first upper cooling seal member and the second upper cooling seal member cools the upper sealing intended location;
In a lower cooling seal mode, the first lower cooling seal member and the second lower cooling seal member are placed in a closed state, and at least one of the first lower cooling seal member and the second lower cooling seal member cools the lower sealing intended location.
Sealing device. In the lower heat sealing mode, the temperature at which at least one of the first lower heat sealing member and the second lower heat sealing member heats the lower sealing scheduled portion is set in the upper heat sealing mode. The sealing device according to claim 6, wherein at least one of the first upper heating sealing member and the second upper heating sealing member has a temperature higher than a temperature at which the upper sealing scheduled portion is heated. At least one of the first upper cooling seal member and the second upper cooling seal member has a flow path through which a cooling medium flows;
The seal device according to claim 6 or 7, wherein at least one of the first lower cooling seal member and the second lower cooling seal member has a flow path through which a cooling medium flows.

Images