JPS621887B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to a vacuum packaging system that can easily vacuum pack raw meat, ham, and other foods as needed, or vacuum pack them and then fill them with gas. This invention relates to a packaging device for gas filling.

BACKGROUND TECHNOLOGY As a conventionally used vacuum or gas filling packaging device of this type, the one shown in FIG. 1 is a generally used vacuum packaging device. A pair of clamping rods 2, 2, one of which is movable and the other fixed, and a pair of heat sealing rods 3, 3, which are located in front of the nozzle 1, one of which is movable and the other fixed. In use, first the bag 4 containing the required food is placed on the main body of the device by fitting its opening into the tip of the nozzle 1, and then a pair of clamping rods 2 are installed. , 2, pinch and hold the mouth edge of the bag body 4 from above and below along with the nozzle 1, and in this state, operate the vacuum pump (not shown) connected to the base end of the nozzle 1 to suck the air inside the bag body 4. After that, the mouth edges of the bag body 4 are thermally bonded by pinching with a pair of heat-sealing rods 3, 3, and the desired bag body 4 is opened by opening the pair of heat-sealing rods 3, 3 and the pair of clamping rods 2, 2. It is something to take out.

Next, what is shown in Fig. 7 and Fig. 8 is JP-A-55-
This is a gas filling or vacuum sealing machine disclosed in Publication No. 79221, and this device is roughly divided into three parts: a movable nozzle 1a, a sealing bed 2a, and a crimp bar 3a.When the air intake and gas suction steps are completed, the nozzle 1a rapidly closes. At the same time, the bar 3a is lowered to the final position, and the heater placed on the bed 2a is energized to perform the thermal welding operation.

Further, this invention has the features that the intake and gas blowing nozzles are movable and are configured to hold the opening of the packaging bag as airtight as possible until just before the sealing process begins, and the tip of the nozzle is separated from the packing part. The present invention is characterized in that the amount of air that re-enters into the package during the time until the crimp lever finally finishes descending is minimized.

Problems to be Solved by the Invention In the first prior art, when the vacuum pump operates and suction of air inside the bag starts, the inner surface of the bag near the suction port of the nozzle 1 is strongly attracted to the air. Due to suction pressure, this part polymerizes and becomes occluded.
It becomes wrinkled and becomes in a state of blocking communication with the inner part of the bag body.

For this reason, there is a problem in that the negative pressure of the vacuum pump rapidly increases while the internal air remains in the inner part of the bag, resulting in the air suction operation being terminated.

At the same time, the part of the bag that is wrinkled and deformed by blocking the suction port is thermally bonded as it is, so small wrinkles tend to form in this part, leading to insufficient suction and incomplete sealing. existed.

Next, in the second prior art, the problem of maintaining the airtightness of the packaging bag and achieving complete sealing is solved to some extent in that the nozzle is movable.

However, there is a problem in that the mouth of the packaging bag is not kept airtight temporarily after the tip of the nozzle leaves the packing part until the crimp lever finally finishes descending. By all means, it was not possible to completely prevent air from re-entering into the packaging bag within the above-mentioned time.

Furthermore, even if two nozzles are used and the air inside the packaging bag is sucked at two locations by forming the nozzles into a flat shape, the same problem as in the first prior art occurs, that is, the packaging bag is close to the nozzle suction port. It was not possible to prevent the inner surface of the tube from polymerizing due to suction pressure, clogging, and becoming wrinkled.

This problem does not occur if the two nozzles are exactly in close contact with both sides of the packaging bag and are stopped at that position, but when using packaging bags of various sizes, it is necessary to The distance between the two nozzles had to be set wide, which was inconvenient.

Summary of the Invention The present invention has been made to solve the problems existing in the above-mentioned prior art, and includes a pair of two nozzles that are movable left and right so that the two nozzles are accurately positioned on both sides of a packaging bag. The purpose is to freely match the size and shape of various packaging bags, to smoothly and reliably suck air or fill with gas, and at the same time improve work efficiency.

Further, the present invention airtightly holds the nozzle and the mouth edge of the bag with a clamping rod during air suction or gas filling, and when heat sealing, the nozzle is retreated while maintaining the airtight holding state with the clamping rod. Another purpose is to simultaneously close the heat-sealing rod to perform heat-sealing to ensure airtight sealing.

Means for Solving the Problems The present invention employs the following means to solve the above problems.

A pair of left and right nozzles 15, 15, which are movable left and right and back and forth, are provided at the center of the front surface of the device main body 11, with their tips protruding forward by a required length, and the pair of nozzles 15, 15 are connected to a pair of sliding bodies 19, 19. At the same time, the four corners of the pair of sliding bodies 19, 19 are fitted into the four support rods 18 so as to be movable back and forth,
A pair of elongated guide grooves 20, 20 are provided on both sides of the pair of sliding bodies 19, 19, and a pair of nozzles 1
5 and 15 are loosely fitted into the guide rod 21 so as to be movable left and right, and the guide rod 21 is loosely fitted into the pair of guide grooves 20 and 20 so as to be movable back and forth. The clamping rods 16, 16 and the pair of upper and lower heat sealing rods 17, 17 are connected to the pair of nozzles 15, 15.
The pair of heat-sealing rods 1 are arranged at upper and lower positions of
A long clear gap 24 through which the rods 7 and 17 can freely pass is provided in the middle part of the pair of clamping rods 16, 16, and both ends of the pair of clamping rods 16, 16 are connected to form a rectangular frame shape. A pair of pressure contact rods 25, 25 made of soft rubber or the like are attached to the pressure contact portion of the
A heater 26 is provided at one of the pair of heat seal rods 17, 17, and a heater 26 is provided at one of the pair of heat seal rods 17,
A pair of clutches 3 that adjust the left and right movements of 5 and 15
9 and 39 are provided in the driving portion of the pair of nozzles 15 and 15, and drive a pair of chains or the like for interlocking the horizontal movement of the pair of nozzles 15 and 15 and the vertical movement of the pair of clamping rods 16 and 16. body 35, 35, 4
1, 41, 44, 44 are provided, and the pair of nozzles 15, 15 are moved back and forth, and the pair of heat sealing rods 1 are provided.
It is characterized in that a pair of drive bodies 60, 60 such as a chain are provided for interlocking the vertical movements of the parts 7, 17.

Effect By having the above configuration, the present invention can produce raw meat,
When the lip of a synthetic resin bag containing ham or other food is fitted into the tips of the pair of nozzles 15, 15, and the motor 27 is rotated, the drive bodies 35, 35, such as chains, are rotated. and a pair of clamping rods 16,1
6 up and down in the closing direction.

At the same time, the driving bodies 41, 41, such as chains, which are interlocked with the driving bodies 35, 35, such as chains, and the driving bodies 44, 44, such as chains, also rotate to rotate the pair of nozzles 1.
5, 15 left and right in the direction of opening.

In this case, when the pair of nozzles 15, 15 are fully opened on both sides of the mouth edge of the bag, the clutch 39 is activated, and the rotation of the driving bodies 41, 41, such as chains, and the driving bodies 44, 44, such as chains, is stopped. pair of nozzles 1
5 and 15 stop at the relevant position.

On the other hand, the pair of clamping rods 16, 16 continue to move up and down, and the mouth edge of the bag body and the pair of nozzles 15, 15 are
Stop at the position where they are pressed against each other from above and below.

The motor 27 is controlled by a known electrical method so as to stop when the pair of clamping rods 16, 16 are in pressure contact with each other.

At the same time as the pair of clamping rods 16, 16 stop in a pressurized state, the vacuum pump 67 is activated, and the air inside the bag is evacuated through the pair of nozzles 15, 15.
It becomes a vacuum state.

When the work of evacuating or filling the bag with gas is completed, the motor 28 rotates to rotate a pair of drive bodies 52, 52 such as chains, and a pair of heat sealing rods 17, 17 move in the closing direction. It moves up and down and comes into pressure contact with the rim of the bag, creating a heat seal.

A pair of driving bodies 60, 60 such as a pair of chains also rotate in conjunction with the vertical movement of the heat sealing rod, and a pair of nozzles 15, 15 connected to the pair of driving bodies 60, 60 such as a chain move backward. Then, during heat sealing, it is pulled out from the rim of the bag and separated.

Further, even during heat sealing, the mouth edge of the bag is still held under pressure by the pair of clamping rods 16, 16.

After the heat sealing is completed, the motors 27 and 28 rotate in the opposite direction, unlike the previous case, and the pair of clamping rods 16,
16 and the pair of heat sealing rods 17, 17 move up and down in the opening direction and return to the old state.

As the pair of heat seal rods 17, 17 move, the pair of nozzles 15, 15 are moved by the pair of springs 64, 6.
At the same time, as the pair of clamping rods 16, 16 move, the pair of nozzles 15, 15 move in the closing direction and return to the initial state. and prepare for the next packaging operation.

Embodiment An example of the implementation of the present invention will be described below based on the drawings.

As shown in FIG. 2, the device of the present invention is formed into one box shape as a whole, and the rim of the bag for the desired packaged material is inserted into the center of the front lid 12 that covers the front of the device body 11. A window hole 13 is provided for the package, and a mounting table 14 for placing the article to be packaged protrudes from the lower edge of the window hole, the height of which is adjustable.

FIG. 3 is a front view with the front cover 12 removed. On the front side of the main body 11 of the device, a pair of nozzles 15, 15 are provided in the center with their tips protruding forward by a required length, and above and below the nozzles 15, 15 are provided. A pair of upper and lower clamping rods 16, 16 and a pair of upper and lower heat-sealing rods 17, 17 are provided, which move up and down while keeping each other horizontal.

The pair of nozzles 15, 15 are fitted in a pair of sliding bodies 19, 19, which are formed by slidingly fitting the four corners of the four support rods 18, front and back and top and bottom, so that they can move back and forth. The pair of sliding bodies 19, 19 are movable left and right in order to spread the mouth edge of the bag left and right.

A pair of elongated guide grooves 20, 20 are provided on both sides of the pair of sliding bodies 19, 19.
At the time of heat sealing, the pair of nozzles 15, 15 are guided by a guide rod 21 loosely fitted so as to be movable left and right, move backward by the length of the guide grooves 20, 20, and are removed from the mouth edge of the bag body. ing.

The four support rods 18 have both ends fixed to a pair of support plates 22, 22, and the pair of support plates 22, 22 have the pair of guide grooves 20,
A pair of guide grooves 23, 23 similar to 20 are provided, and both ends of the guide rod 21 are slidable.

The pair of clamping rods 16, 16 have elongated gaps 24, 24 formed in their intermediate portions, and are connected at both ends to form a rectangular frame shape in plan view. , a pressure contact rod 25 made of soft rubber or the like is provided.

The pair of clamping rods 16, 16 move up and down to press and hold the mouth edges of the bag which are spread laterally by the pair of nozzles 15, 15, and remove the air inside the bag to create a vacuum. When filling the bag with nitrogen gas or the like in a vacuum state, and when performing heat sealing, the mouth edge of the bag is pressed and held from above and below.

The pair of heat sealing rods 17, 17 are provided so as to move up and down within the gap 24 of the pair of clamping rods 16, 16, and a heater 26 is provided on the surface of the lower heat sealing rod 17. The surface of the upper heat-sealing rod 17 is covered with silicone rubber or the like and holds the mouth edge of the bag horizontally under pressure.

The pair of heat-sealing rods 17, 17 move up and down during heat-sealing to heat-seal the mouth edge of the bag.

The heater 26 is set to automatically turn off after a certain period of time via a timer, and the heat sealing time can be adjusted as appropriate depending on the material of the bag.

At the bottom of the device main body 11 are two motors 27,
28, one motor 27 is provided with a worm gear 29 and a worm wheel 30.
A rotating shaft 31 is pivotally attached through the rotating shaft 31, and a pair of bevel gears 32, 32 are provided at both ends of the rotating shaft 31.
A pair of bevel gears 33, 33 and a pair of gears 34,
A pair of driving bodies 35, 3 such as chains via 34
5 have been contacted.

This pair of driving bodies 35, 35 such as chains,
A pair of gears 36 provided at the top of the entire device 11,
36 and the pair of gears 34, 34, and the inner lower part of the pair of drive bodies 35, 35 such as chains is connected to the lower clamping rod 1.
6, and the outer upper part is fixed 38, 38 to the upper clamping rod 16.

For this reason, the drive bodies 35, 3 such as a pair of chains
If 5 rotates, a pair of clamping rods 16, 16
move up and down in the closing direction at the same speed, whereas when they rotate in the opposite direction, the pair of clamping rods 16, 16 move up and down in the opening direction.

A pair of gears 40, 40 are connected to the pair of gears 36, 36 via a pair of clutches 39, 39.
is attached to the shaft, and this pair of gears 40, 40
, a pair of driving bodies 41, 41 such as a pair of chains, a pair of gears 42, 42, a pair of gears 43, 43 coaxial therewith, and a driving body 4 such as a pair of chains.
A pair of gears 45, 45 are connected via 4, 44.

The upper portions of the driving bodies 44, 44 such as the pair of chains are fixed to the pair of sliding bodies 19, 46, 44.
6 has been done.

When the mouth of the bag body is inserted into the pair of nozzles 15, 15 and the motor 27 is rotated, the pair of nozzles 1
5 and 15 are a pair of clamping rods 1 that slide to the left and right to fully expand the mouth edge of the bag in the horizontal direction.
6 and 16 respectively move up and down to close and press against the mouth edge of the bag.

At this time, the pair of nozzles 15, 15 are connected to the pressure rod 25.
It is configured to move by the length of
By the action of the clutch 39, the bag can be stopped at any position depending on the size of the bag.

That is, the pair of nozzles 15, 15 are configured to stop at a position where the mouth edge of the bag body is fully expanded from side to side.

Next, a rotating shaft 48 is attached to the other motor 28 via a worm gear 46 and a worm wheel 47, and a pair of bevel gears 49 are provided at both ends of the rotating shaft 48. , to this pair of bevel gears 49, 49, a pair of bevel gears 50, 5
A pair of driving bodies 52, 52, such as a chain, are connected through a pair of gears 51, 51.

This pair of driving bodies 52, 52 such as chains,
A pair of gears 53 provided at the top of the device main body 11,
53 and the pair of gears 51, 51, and the inner lower portions of the pair of drive bodies 52, 52 such as chains are fixed to the lower surface of the end of the lower heat sealing rod 17. , 54, and the outer upper portions are fixed 55, 55 to the upper and lower ends of the upper heat-sealing rod 17.

A pair of sliding bodies 56, 56 are provided at the inner central parts of the driving bodies 52, 52 such as the pair of chains, and the lower ends of the pair of sliding bodies 56, 56 are connected to the lower heat sealing rod 17. It is fixed to the upper surface 57 and its upper end passes through the end of the upper heat sealing rod 17 to connect a pair of drive bodies 52 such as chains,
58 is fixed to 52.

Since the driving bodies 52, 52 such as a pair of chains and the pair of heat sealing rods 17, 17 are configured as described above, the driving bodies 52, such as a pair of chains
When 2 and 52 rotate, the lower heat sealing rod 17
The upper heat sealing rod 17 is pulled upward, and the upper heat sealing rod 17 is
It is pulled down and moved up and down in the closing direction, and is pressed into contact with the mouth edge of the bag to perform a heat seal.

At this time, the pair of sliding rods 56, 56 slide within the upper heat-sealing rod 17.

A pair of guide rods 59, 59 are provided through both ends of the pair of heat seal rods 17, 17, and the pair of heat seal rods 17, 17 are attached to the pair of guide rods 59, 59. It moves vertically up and down while being guided and held horizontally.

One end of a pair of drive bodies 60, 60 such as a pair of chains is fixed to the lower surface of both ends of the lower heat sealing rod 17.
1, 61, and the other end of the driving bodies 60, 60 such as a pair of chains is fixed to the guide rod 21 via a pair of gears 62, 62 and a pair of gears 63, 63.

As the lower heat sealing rod 17 moves upward during heat sealing, the driving bodies 60, 60 such as the pair of chains are also pulled upward, and at the same time, the guide rod 21 moves backward inside the guide groove 20. to move the pair of nozzles 15, 15 backward.

After the heat sealing is completed, the lower heat sealing rod 17 moves downward and at the same time the guide rod 21 is moved by the pair of springs 6.
4 and 64, the pair of nozzles 15 and 15 move forward and return to their old state.

Figure 5 shows a state in which a vacuum pump 67 and a gas cylinder 68 are connected to the base ends of a pair of nozzles 15, 15 via electromagnetic valves 65, 66, and after the air inside the bag is removed to create a vacuum state. , solenoid valve 65
is closed, and then the solenoid valve 66 is opened to inject gas.

The amount of gas injected is adjusted by adjusting the injection time using a timer.

FIG. 6 shows a steam/water separator, in which a steam/water separator 70 having a filter 69 is provided between a pair of nozzles 15, 15 and a vacuum pump 67 to separate air and moisture.

Thereby, even foods containing moisture can be easily vacuum packed.

At this time, the moisture inside the bag is also removed by the steam separator 70.
is discharged through.

Further, when filling the bag with chitso gas or the like depending on the type of food, the gas cylinder 68 is used.

The operation of the vacuum pump 67 and gas cylinder 68 as well as the electromagnetic valves 65 and 66 are automatically performed by known electrical methods.

In the figure, 71 is a rubber valve.

Effects of the Invention Therefore, according to the present invention, the mouth edge of the bag body is held in pressure contact with the two nozzles by the press rod provided on the clamping rod with both ends fully expanded, so that the bag body The edge of the mouth is held in a completely flat state without any wrinkles or the like, so that air can be removed or gas can be filled smoothly and satisfactorily.

It can be heat-sealed in the same state as above, and the heat-sealed part not only has a nice finish, but also has no wrinkles or the like and can be completely packaged.

Moreover, since the pair of clamping rods are provided with two pressing rods at the front and back with a gap, the bag mouth edge can be held more stably in two positions by changing the position. be.

Next, the air inside the bag is removed at two locations using two pairs of nozzles, so the air moves evenly during removal without being biased in one direction, and the bag is not extremely deformed. The air can be removed smoothly and efficiently without any problems.

In particular, the nozzles are located at both ends of the bag, and the air is discharged with the mouth of the bag fully expanded, which prevents deformation of the bag and allows air to be removed without causing wrinkles. can be carried out smoothly and completely.

Further, in the present invention, the left and right movement of the nozzle for expanding the mouth edge of the bag left and right is linked to the vertical movement of the clamping rod, and the retreating movement of the nozzle during heat sealing is linked to the vertical movement of the heat sealing rod. Therefore, a series of continuous operations such as air extraction, gas filling, and heat sealing can be performed completely and reliably without any slight deviation.

In addition, the nozzle and clamping rod, and the nozzle and heat sealing rod are all mechanically linked via a driving body such as a chain, which doubles the reliability of their operation and at the same time prevents failures. It can be used for a long period of time without any damage.

Furthermore, since a clutch is installed to freely control the left and right movement of the nozzle, it is possible to vacuum pack or gas-fill pack any bag, regardless of the size of the bag, making it easy to remove parts. It is possible to continuously package many types of products without changing them.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention. Fig. 1 is an operational explanatory diagram showing an example of a conventional device, Fig. 2 is a perspective view showing the entirety of the present invention, and Fig. 3 shows the front cover of the present invention. Figure 4 is a partially cutaway longitudinal sectional view of the same as above, Figure 5 is a front view of the removed state, Figure 5 is a nozzle, vacuum pump,
FIG. 6 is an explanatory diagram showing a gas cylinder, FIG. 6 is an explanatory diagram showing a steam/water separator, FIG. 7 is a principle diagram of the conventional device, and FIG. 8 is a side sectional view of the conventional device. 11...Device main body, 15...Nozzle, 16...
Pinch rod, 17... Heat sealing rod, 18... Indication rod,
19...Sliding body, 20...Guide groove, 21...Guide rod, 24...Gap, 25...Pressure rod, 26...Heater, 35, 41, 44, 60...Driver body such as chain, 39...Clutch.

Claims (1)

[Claims] 1. A pair of left and right nozzles 15, 15, which are movable left and right and back and forth, are provided in the center of the front surface of the device main body 11, with their tips protruding forward by a required length, and the pair of nozzles 15, 15 are connected to a pair of sliding bodies 19, 19 so as to be movable back and forth, and the pair of sliding bodies 19, 19
The four corners of the frame are inserted into four support rods 18 so as to be movable left and right, and a pair of elongated guide grooves 20, 20 are provided on both sides of the pair of sliding bodies 19, 19, and a pair of nozzles 15, 15 are formed. loosely fit into the guide rod 21 so that it can move left and right,
The guide rod 21 is loosely fitted into the pair of guide grooves 20, 20 so as to be freely movable back and forth, and a pair of upper and lower clamping rods 16, 16 and a pair of upper and lower heat seal rods 17, 17 are moved up and down while keeping each other horizontal. The pair of nozzles 15,1
5, and the pair of heat sealing rods 1
A long clear gap 24 through which the rods 7 and 17 can freely pass is provided in the middle part of the pair of clamping rods 16, 16, and both ends of the pair of clamping rods 16, 16 are connected to form a rectangular frame shape. A pair of pressure contact rods 25, 25 made of soft rubber or the like are attached to the pressure contact portion of the
A heater 26 is provided at one of the pair of heat sealing rods 17, 17, and a heater 26 is provided at one of the pair of heat sealing rods 17, 17,
A pair of clutches 3 that adjust the left and right movements of 5 and 15
9 and 39 are provided in the driving portion of the pair of nozzles 15 and 15, and drive a pair of chains or the like for interlocking the horizontal movement of the pair of nozzles 15 and 15 and the vertical movement of the pair of clamping rods 16 and 16. body 35, 35, 4
1, 41, 44, 44 are provided, and the pair of nozzles 15, 15 are moved back and forth, and the pair of heat sealing rods 1 are provided.
A packaging device for vacuum or gas filling, characterized in that a pair of driving bodies 60, 60 such as a pair of chains are provided for interlocking the vertical movements of 7, 17.