JPH063777Y2 - Hermetic packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a hermetic packaging device, and in particular, a thermoplastic packaging bag containing an object to be packaged is placed in front of the device body.
The present invention relates to a hermetic packaging device in which the opening of the packaging bag is attached to the sealing position of the apparatus body, the inside of the packaging bag is decompressed, and then the opening of the packaging bag is heat-sealed for packaging.

[Prior Art] FIG. 6 is an external perspective view of this type of hermetically sealed packaging device that has been conventionally used, and FIG. 7 is a perspective view of its internal structure. The illustrated hermetic packaging device 5 includes a device body including an upper cover 6 and a lower bar 7. An airtight crimping bar 8 is provided on the front portion of the upper cover 6 so as to be vertically movable. The portion of the upper cover 6 facing the airtight crimp bar 8 constitutes a flat seal position. A seal base 9 is provided in this portion so as to face the airtight pressure bonding bar 8. A heating body 10 and an airtight packing 11 are arranged on the seal base 9. A nozzle 13 is provided between the airtight pressure-bonding bar 8 and the seal base 9 so as to project from below the strainer tank 12. The nozzle 13 is moved back and forth by the nozzle mechanism portion 45. The strainer tank 12 temporarily stores water when the air in the packaging bag is sucked by the nozzle 13. Furthermore, on the upper part of the upper cover 6,
A power switch 14, an operation panel 15 and a lid 16 are provided. A space for accommodating small consumable parts such as a heater and a tape is provided inside the lid 16.

Next, the internal structure of the apparatus main body including the upper cover 6 and the lower cover 7 will be described with reference to FIG.

Inside the hermetic packaging device, a power transformer 41, a nozzle 13, an air pump 43 connected to the nozzle 13 by a pipe 43a, a nozzle mechanism portion 45 that regulates the movement of the nozzle 13 in the front-rear direction, and the like are provided. Airtight packing 21
Is held by the degassing arm 49. Degassing arm 4
There are a pair of 9s on the left and right. The degassing arm 49 is associated with the degassing solenoid 47, and its vertical movement is controlled, as will be described later. The sealing packing 22 is held by the sealing arm 50. There are one pair of sealing arms 50 on the left and right. The vertical movement of the sealing arm 50 is controlled by the sealing solenoid 51.

8 and 9 show the hermetic packaging device 5 shown in FIG.
FIG. 3 is a schematic side sectional view of FIG. The operation and operation up to heat-sealing the opening of the packaging bag 3 containing the article to be packaged will be described with reference to FIGS. 8 and 9 and FIGS. 6 and 7.

First, the power switch 14 provided on the upper cover 6 is turned on to put the article to be packaged in the packaging bag 3. Next, the eighth
As shown in the figure, the packaging bag 3 containing the article to be packaged is placed in front of the packaging body, and the upper portion of the packaging bag 3 is placed along the inclined surface 17. At this time, the nozzle 13 is inserted into the opening of the packaging bag 3.

Next, when the airtight crimping bar 8 is manually pushed downward,
The state shown in the figure is realized. At this time, the degassing solenoid 47
Is activated, the degassing arm 49 strongly descends in the direction of the seal base by a mechanism described later, and the airtight packing 2
1 is strongly pressed toward the seal base 9. Due to this pressure, the opening of the packaging bag sandwiched between the airtight packing 21 and the airtight packing 11 is strongly tightened, and the packaging bag 3
The inside of is sealed. In this state, the deaeration operation of the nozzle 13 is started, and the inside of the packaging bag 3 is deaerated. Then
The nozzle mechanism 45 operates to move the nozzle 13 rearward and remove the nozzle 13 from the opening of the packaging bag. Then, the sealing solenoid 51 is operated to lower the sealing arm 50, and the sealing packing 22 is pressure-bonded to the heating body 10. The opening of the packaging bag 3 has the heating element 10
When heated from above, welding and joining are completed, and thereby heat sealing is completed.

[Problems to be Solved by the Invention] Since the conventional hermetic packaging device is configured as described above, the sealing solenoid 51 for adjusting the lowering operation of the sealing arm 50 is indispensable. This sealing solenoid is large and occupies a large area.
Makes assembly work difficult. Further, the pressure applied to the sealing solenoid fluctuates greatly due to fluctuations in the power supply voltage.
Therefore, there is a problem that a stable pressing force cannot be obtained. Further, the weight of the sealing solenoid is considerably heavy and the total weight of the sealing and packaging apparatus is heavy, and there has been a strong demand for weight reduction in the industry.

Therefore, the purpose of the present invention is to facilitate the assembly work,
An object of the present invention is to provide a hermetic packaging device capable of obtaining a stable pressing force and further reducing the weight.

[Means for Solving the Problems] In this invention, a thermoplastic packaging bag containing an unwrapped product is placed in front of the device body, and the opening of the packaging bag is attached to the sealing position of the device body. After decompressing the inside of the packaging bag, the opening of the packaging bag is heat-sealed for packaging, and is provided so as to face a seal base that forms the sheet position, and works together with the seal base, An airtight packing for sandwiching the opening of the packaging bag to make the inside of the packaging bag airtight, and a heating body provided on the seal base, which are provided so as to face each other, and work together with the heating body, A sealing packing for heat-sealing the opening of the packaging bag, which moves back and forth in the longitudinal direction thereof, and is inserted into the opening of the packaging bag when moved forward, and the airtight packing is placed on the sealing table. Push to The present invention relates to a hermetic packaging device including a nozzle for degassing the inside of the packaging bag in a lowered state.

Further, in order to solve the above problems, the following members are provided.

(A) An evacuating arm that holds the airtight packing and lowers the airtight packing toward the seal base.

(B) A sealing arm that descends together with the degassing arm to a certain position, and that lowers the sealing packing toward the sealing base.

(C) When the nozzle is performing the deaeration operation in the packaging bag while the airtight packing is pushed down, the seal packing should not pressurize the heating element attached to the seal base. , A sealing arm support member for preventing further lowering of the sealing arm.

(D) The nozzle is provided in association with the nozzle and is interlocked when the nozzle is pulled downward in the backward direction after the deaeration operation is completed, and pushes down the sealing arm supporting member to remove the sealing arm supporting member from the sealing arm supporting member. Push-down member that opens the sealing arm.

(E) A spring that is provided in association with the degassing arm and the sealing arm, and presses the sealing packing toward the heating body by its spring pressure after the sealing arm support member is pushed down. Element.

[Operation] Since the sealing solenoid used in the conventional device is replaced by the sealing arm supporting member, the pushing member, and the spring member, the occupied area is reduced and the weight can be reduced. Further, since they are not electrically operated, the applied pressure does not fluctuate due to the power supply voltage.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the internal structure of the hermetic packaging device of the present invention, and FIG. 2 is a schematic structural view of the internal structure as seen from the side.

The embodiment shown in FIG. 1 is the same as the conventional example shown in FIG. 7 except for the following points. Corresponding parts are designated by the same reference numerals, and the description thereof will be omitted.

The sealed packaging device according to the embodiment differs from the conventional sealed packaging device shown in FIG. 7 in that instead of the sealing solenoid 51, a sealing arm supporting member, for example, a sealing arm supporting plate 71, a pushing down member 71a, The point is that the leaf spring 62 is provided.

The seal arm support plate 71 is a heating element 10 in which the seal packing 21 is attached to the seal base 11 when the airtight packing 21 is pushed down and the nozzle 13 is performing the deaeration operation in the packaging bag. This is for preventing the sealing arm 50 from further descending so as not to pressurize.

The push-down member 71a is provided in association with the nozzle 13, and after the deaeration operation of the nozzle is completed, the push-down member 71a is interlocked with when the nozzle 13 is pulled backward, and pushes down the seal arm support plate 71, The sealing arm 50 is released from the sealing arm support plate 71.

The leaf spring 62 is sandwiched between the degassing arm 49 and the sealing arm 50. After the sealing arm support plate 71 is pushed down, the spring pressure of the leaf spring 62 heats the sealing packing 21. The pressure is applied to the body 10.

In FIG. 2, the degassing arm 49 is an airtight crimp bar 6
(Shown in FIG. 6). The other end of the degassing arm 49 is supported by a support pin 60. The bearing pin 60 also bears the sealing arm 50. The support pin 60 is supported on the frame 65. An airtight packing 21 is provided at one end of the degassing arm 49, and a sealing packing 22 is provided at one end of the sealing arm 50. The airtight packing 21 is made of a flexible material such as plastic.

The airtight packing 21 is provided so as to face the seal base 9 that forms the seat position, and works together with the seal base 9 to pinch the opening of the packaging bag 3 and hermetically seal the inside of the packaging bag 3. is there. The sealing packing 22 is provided so as to face the heating body 10 provided on the sealing base 9, and acts together with the heating body 10 to heat seal the opening of the packaging bag 3. The degassing arm 49 holds the airtight packing 21, and lowers the airtight packing 21 toward the seal base 9. Sealing arm 50
Is for descending together with the degassing arm 49 to a certain position, and the sealing packing 22 is attached to the sealing table 9
It is intended to descend toward.

An arm 75 is connected to the central portion of the degassing arm 49, and the arm 75 is connected to the shaft 69 via a connection arm 78. The connection between the shaft 69 and the connecting arm 78 is connected by a bearing pin 73.
The support pin 73 projects upward in the drawing. The other end of the shaft 69 is rotatably connected to the frame 65 by a fixing pin 67. A sealing arm support plate 71 is rotatably supported by a support pin 80 in the vicinity of the connecting portion between the shaft 69 and the connecting arm 78. In the figure, the sealing arm support plate 71 stands vertically. This sealing arm support plate 71 is a heating device in which the sealing packing 21 is attached to the seal base 9 when the airtight packing 21 is pushed down and the nozzle 13 is performing the deaeration operation in the packaging bag 3. This is for preventing the sealing arm 50 from further descending so as not to press the body 10. A pushing-down member 71a is provided near the sealing arm support plate 71. The pushing-down member 71a is provided in association with the nozzle 13, and works together when the nozzle 13 pulls backward after the deaeration operation of the nozzle 13 is finished, and pushes down the sealing arm support plate 71. The sealing arm 50 is released from the sealing arm support plate 71.

A link mechanism 471 is connected to the degassing solenoid 47. The link mechanism 471 includes an arm 75 and a connecting arm 7.
8 is a box-shaped one in which a part of the shaft 69 is housed. The side wall is provided with a cutout portion 471a.

Next, the operation of these members will be described with reference to FIG. 2, FIG. 3, FIG. 4 and FIG.

In FIG. 2, the airtight crimping bar 8 is pushed down from the direction of the arrow 100 so that the deaeration arm 49 and the sealing arm 50 are supported by the bearing pin 60 as a fulcrum.
Rotate in the direction of. FIG. 3 shows the state at that time, and the sealing arm 50 is supported by the sealing arm support plate 71. In addition, the link mechanism 471
Inside the arm 75, connecting arm 78 and shaft 69
Part of the Then, the support pin 73 engages with the cutout portion 471a provided in the side wall portion of the link mechanism 471.

Next, the micro switch 65a is automatically turned on to operate the degassing solenoid 47 and pull the link mechanism 471 in the direction of arrow 200. Then, the state shown in FIG. 4 is obtained. In this case, the deaeration arm 49 is pushed down slightly downward from the horizontal direction. Due to this pressing force, the airtight packing 21 cooperates with the airtight packing 11 to strongly grip the opening of the packaging bag 3. In addition,
Even in this case, since the sealing arm 50 is supported by the sealing arm support plate 71, the sealing packing 22 cannot be pushed down further. Therefore, the sealing packing 21 does not pressurize the heating element 10 provided on the sealing base 9. As can be seen from the figure, at this time, the leaf spring 62 is extremely compressed by the degassing arm 49 and the sealing arm 50.

After that, the inside of the packaging bag is degassed by the nozzle 13.
After the deaeration by the nozzle 13 is completed, the nozzle 13 is retracted backward by the nozzle mechanism 45. Nozzle 1
The push-down member 71 a is pushed in the direction of the arrow 300 in conjunction with the retraction of the sheet 3. The state at that time is shown in FIG. The sealing arm support member 71 pushes down the pushing member 71a.
When pushed down by, the sealing arm 50 is opened. Then, the sealing packing 22 is pushed toward the heating body 10 by the spring pressure of the spring member 62. Then,
Due to the cooperative action of the sealing packing 22 and the heating body 10, the opening of the packaging bag 3 is welded and joined, thereby completing the heat sealing. After that, the deaeration solenoid 47 returns to its original state, the deaeration arm 49 and the sealing arm 50 are opened, and the state of FIG. 2 is restored.

[Effect of the Invention] As described above, according to the present invention, the sealing solenoid used in the conventional device is replaced with the sealing arm supporting member, the pushing down member, and the spring member. Since these members do not occupy a large area, they are easy to operate during the assembly work. Further, since these members are lightweight, the weight of the hermetic packaging device itself can be reduced. Further, since these members are much cheaper than the sealing solenoid, the manufacturing cost of the hermetic packaging device is reduced. In addition, since the seal solenoid is not used, even if the power supply voltage fluctuates, it is not affected at all, and the conventional problem that the pressure on the seal surface fluctuates in response to fluctuations in the power supply voltage has been solved and stabilized. Pressure can be obtained, and highly reliable heat sealing can be performed. Furthermore, as much as the power used by the sealing solenoid,
Electric power can be saved.

[Brief description of drawings]

FIG. 1 is a perspective view of the internal structure of an embodiment of the present invention, and FIG.
The figure shows the schematic structure of the internal structure seen from the side, FIG. 3,
FIGS. 4 and 5 are explanatory views of the operation of an embodiment of the present invention, FIG. 6 is an external perspective view of the present invention and the conventional device, and FIG.
FIG. 1 is a perspective view of the internal structure of a conventional hermetic packaging device, and FIGS. 8 and 9 are schematic side sectional views of the present invention and the conventional hermetic packaging device. In the figure, 3 is a packaging bag, 9 is a seal base, 13 is a nozzle, 21 is an airtight packing, 22 is a sealing packing,
49 is a degassing arm, 50 is a sealing arm, 62 is a spring member, 71 is a sealing arm support member, and 71a is a pushing down member. In each drawing, the same reference numerals indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-63-162430 (JP, A) Actually opened 62-13806 (JP, U) Actually opened 61-194603 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A thermoplastic packaging bag containing an article to be packaged is placed in front of the apparatus body, and the inside of the packaging bag is decompressed with the opening of the packaging bag attached to the sealing position of the apparatus body. After that, the opening of the packaging bag is heat-sealed, and is provided opposite to the seal base that forms the sheet position, and works together with the seal base to sandwich the opening of the packaging bag, An airtight packing for making the inside of the packaging bag airtight, and a seal provided so as to face a heating body provided on the sealing table and acting together with the heating body to heat seal the opening of the packaging bag. Packing, which moves back and forth in the longitudinal direction thereof, is inserted into the opening of the packaging bag when it moves forward, and the airtight packing is pushed down onto the sealing table, Inside the bag In an airtight packaging device including an airtight nozzle, a deaeration arm that holds the airtight packing and lowers the airtight packing toward the seal base, and deaeration up to a certain position. And a sealing arm for holding the sealing packing and lowering the sealing packing toward the sealing base, and the airtight packing being pushed down in the packaging bag. When the nozzle is performing the deaeration operation of
A seal arm support member for preventing further lowering of the seal arm so that the seal packing does not pressurize the heating element attached to the seal base, and a seal arm support member provided in association with the nozzle, After the pneumatic operation is completed, the nozzle is interlocked when the nozzle is pulled backward, and pushes down the sealing arm support member to release the sealing arm from the sealing arm support member, and the degassing member. Provided in association with the arm and the sealing arm, after the sealing arm support member is pushed down,
And a spring member which presses the sealing packing toward the heating body by the spring pressure.