JPH0238445B2 - SHINKUHOSOHOHOOYOBISONOSOCHI - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention transports an airtight pressure-resistant chamber along an endless track, and vacuum-packages foods, etc. within the chamber while the chamber goes around the endless track. The present invention relates to a method and apparatus for doing so.

(Prior art) Japanese Utility Model Application Publication No. 56-24606 discloses that two rotaries are installed side by side, and while an empty bag is supported and transported by one rotary, articles to be packaged are loaded into the empty bag one after another. It is disclosed that the bag is filled, and then the bag is transferred into a chamber provided on a rotary on the other side, and while the rotary on the other side rotates once, the packaged items filled in the bag are vacuum-packed in the chamber. ing.

Furthermore, in Japanese Patent Application Laid-Open No. 56-131116, a chamber is provided in a circular rotary, and a cover plate is provided in an oval chain that rotates around two axes with the rotary as one axis, and the cover plate is provided with a chamber. While moving along an elliptical path by a chain, the supplied empty bag is supported in a suspended manner on the lid plate, and the empty bag is filled with the article to be packaged, and then this bag is transferred to the chamber. It is disclosed that the material is transported into a container and vacuum packaged.

Furthermore, Japanese Patent Application Laid-open No. 58-20614 discloses that while an uniaxial large-diameter rotary rotates once, an empty bag supported around the periphery of the rotary is filled with an article to be packaged, and then the bag is carried into a chamber. It is disclosed that vacuum packaging of a packaged object is carried out.

(Problem to be Solved by the Invention) Generally, a vacuum packaging device reduces the pressure inside an airtight pressure chamber, and vacuum packaging is performed within this chamber. Refilling work is required. In each of the above-mentioned conventional examples in which the filling operation was mechanized,
In addition to the mechanism that rotates the chamber while creating a vacuum, it is equipped with a mechanism for receiving empty bags and filling the empty bags with items to be packaged. In other words, in the first conventional example, one of the two rotaries, in the second conventional example a part of the chain of the elliptical orbit, and in the third conventional example a part of one rotary, respectively. It is used as a mechanism to fill empty bags with items to be packaged.

In the general concept, the mechanism that rotates the chamber while creating a vacuum and the mechanism that fills the empty bag with the packaged items must be used together, but from a new concept, these two mechanisms must be used together. Providing the devices side by side increases the size of the device, which has the disadvantage of creating a problem with the installation space for the device.

(Means for Solving the Problems) In view of the above points, the present invention substantially combines the space for the mechanism that rotates the chamber while evacuating it, and the space for the packing material filling mechanism, thereby reducing the overall size of the device. In the first method invention, a chamber and a cover plate that closes the opening surface of the chamber are always circulated together along an endless track, and the chamber and cover plate are arranged so that the endless track is aligned with the chamber. While making the rounds, an empty bag is supported on the outside surface of the lid board, the empty bag is opened, and the bag is filled with the packaged items;
On the other hand, on the inner surface of the lid board, a vacuum is applied to the packaged items in the bag supported by the surface and located in the chamber, and then the bag opening is sealed, and the chamber and lid board are Every time the and goes around the endless orbit, the lid plate is pulled away from the chamber.
After being rotated 180 degrees, the new bag is placed in close contact with the opening of the chamber and supported on the outside of the lid plate, and the new bag is filled with the material to be packaged, while at the same time the bag inside the bag supported on the back side of the lid plate is filled with the new bag. A vacuum is applied to the package.

Further, the second invention of the device includes a means for intermittently moving the chamber along an endless track so that the opening surface of the chamber faces outward, and a means for moving the chamber intermittently along an endless track so that the opening surface of the chamber faces outward, and a means for moving the chamber intermittently along an endless track so that the opening surface of the chamber faces outward; a frame pivotally supported to swing in the front direction of the chamber; a lid plate rotatably supported by the frame via a shaft and having an area sufficient to close the opening surface of the chamber; and a back and front surface of the lid plate. A clip for supporting the bag provided on both sides, a dial for operating the lid board provided at the end of a shaft that supports the lid board on the frame, and the dial engages in the middle of an endless track that the chamber circulates. a chuck installed so that the dial engages with the chuck and stops, and an actuating shaft located on the same axis as a pivot pin of the frame relative to the chamber when the chuck is engaged and stopped; A swinging rod for moving the chuck, a means for rotating the chuck while moving the chuck with the swinging rod to turn the lid plate inside out, and a means for returning the swinging rod to its original position to move the lid plate to the chamber opening surface. and a means for reducing the pressure inside the airtight chamber and sealing the mouth of the bag inside the chamber while the chamber circulates in an endless orbit.

(Operation) In the invention of the device, the chamber intermittently moves on an endless track together with a lid plate that closes the opening surface of the chamber. Clips for supporting bags are provided on both the front and back sides of the lid plate, and while the chamber makes one round on the endless track, the empty bags are held by the clips on the outside surface, and then the packaged bags are inserted into the empty bags. Can be filled with things. When the chamber makes one circuit around the endless track and stops at a prescribed position, a dial for operating the lid plate engages with a chuck provided at the stopped position. The lid plate is pivotally supported by the chamber via the frame, and the chuck is also attached to the operating shaft via the swinging rod, so when the swinging rod is rotated by the operating shaft, the tip of the swinging rod is rotated. The frame engaged with the chuck via the dial also rotates, and the lid plate supported by the frame separates from the opening surface of the chamber. In addition, the lid plate is rotated 180 degrees by the turning means while being separated from the chamber, and the lid plate is brought into close contact with the opening surface of the chamber by a mechanism that returns the swinging rod to its original position. As a result, the bag, which was previously supported by the clip on the surface of the lid plate, is carried into the chamber by the flipping action of the lid plate. Then, while the chamber makes one round on the endless track, the pressure inside the chamber is reduced, and the items to be packaged in the bag are vacuum-packed. At the same time, a new empty bag is supplied to the clip on the surface of the lid plate, and the empty bag is filled with the item to be packaged.

(Example) FIG. 1 shows 5 radially protruding from the rotor 1.
Box-shaped chambers 3, 3, . 8 is a plan view of an apparatus in which a rotary valve 5 is installed above the center of the rotor 1 while lid plates 4, 4, . . . This device, as shown in Figure 2,
The disk-shaped rotor 1 is mounted on a cylindrical bearing 11 fixed to the top surface of the machine base 10, and a thrust bearing 1
2 and a main shaft 13 fixed to the lower center of the rotor is supported by radial bearings 14, 14 on the bearing 11, while the main shaft 13 and the driving shaft 15 are connected via a Geneva mechanism 16. The rotor 1 is intermittently rotated by 72 degrees by the intermittent power transmission function of the Geneva mechanism 16. Further, the rotary valve 5 includes a movable plate 17 fixed to the upper surface of the rotor 1 and a fixed plate 18 firmly supported on the machine base 10 via an arm 10a.
Five passages 19, 19... are vertically bored through the chambers 3, 3... through the cavities of the respective pipes 2, 2..., while the fixed plate 18 is connected to a hose 20 connected to the upper surface. It is constructed by forming an arc-shaped slit 21 on the lower surface.

As shown in FIG. 4, each lid plate 4 disposed on the opening surface of each chamber 3 is provided with clippers 6, 6 on both sides thereof. Although FIG. 3 shows only one side of the lid plate 4, the clipper 6 shown in the figure is also provided in a symmetrical state on the back side. The clipper 6 has a pair of L-shaped arms 22,
23 are swingably supported via pins 24, 24, respectively, and these two arms are connected via a link 25, and the other end of the tension spring 26 engaged with the end of one arm is connected to the lid plate 4. The upper ends of both arms 23, 23 are urged to separate by the tensile force of the spring 26. Therefore, the arm 22 on one side
When an external operating force as indicated by arrow G is applied from the lower side of the piece 22a projecting laterally from the lower end of the spring 26, the spring 26 is stretched and the upper ends of the arms 22 and 23 approach each other and catch the supplied bag X. It becomes possible. The clips that hold the bag at the top of both arms have the same structure on the left and right sides,
It is constructed as shown in FIG. That is, a movable member 30 is pivotally supported to a bracket 28 on the side of the arm 22 via a pin 29, and clamping claws 31 and 32 are respectively fixed to the arm 22, and
By pulling the movable member 30 with a spring 33, the bag can be clamped between the clamping claws 31 and 32, and when an external operating force as indicated by arrow F is applied to the roller 34 at the lower end of the movable member 30, The clamping force loosens and the bag falls.

Furthermore, as shown in FIG. 3, two upper and lower brackets 35, 35 are protruded from the side surface of the chamber 3, and the U-shaped frame 8, which has already been explained, is attached to these brackets 35, 35 and rotated via pins 36, 36. In addition to being freely pivotable, a needle pin 37 fixed to the lower end of the frame 8 supports the central lower surface of the lid board 4, and a boss 38 fixed to the upper end of the frame 8 supports the lid board 4. A pin 39 provided on the central upper surface of 4 is rotatably supported.

Further, as shown in FIG. 4, provided within the chamber 3 are a sealing stand 40 that rotates and changes its position by an external operating force, and a sealing bar 42 that is activated by the expansion of an air pillow 41.

Of the five stopping positions where the chamber 3 stops in FIG. 1, a lid plate reversing mechanism 7 as shown in FIG. 3 is provided at the location indicated by E. This mechanism is supported by a frame 10a connected to the machine base so that the vacuum chamber 3 and lid plate 4 pass under it. That is, the frame 1
0a rotatably supports an operating shaft 45 via a bearing 44, a first swinging rod 46 is fixed to the lower end of the operating shaft 45, and a second swinging rod 47 is fixed to the upper side of the first swinging rod. is rotatably supported on the operating shaft 45. Further, a chuck 50 having a slit 49 on the lower surface of the boss 48 at the tip of the first swinging rod 46 is provided.
is rotatably supported via a pin 51. As shown in FIG. 6, a predetermined elongated hole 52 is formed in the second swinging rod 47 along its longitudinal direction, and a slider 53 that is slidably engaged with the elongated hole is inserted vertically. The chuck 5 is attached to the movable pin 54.
It supports the lever 55 on the 0 side. Further, a pin 58 having one end engaged with the movable pin 54 and the other end of the tension spring 57 fixed to the first swinging rod 46
The movable pin 54 is attracted to one end of the elongated hole 52 by the tensile force of the spring 57.
As a result, as shown in Fig. 6, the two swinging rods 4
6, 47 and one lever 55 are held in a substantially triangular shape.

In FIG. 1, position A next to the above-mentioned position E
is equipped with bag supply means. Since this type of means for feeding the bag suctioned by the suction cup toward the clamp is known, a description of its structure will be omitted. Bag
As shown in FIG. 2, a rail 60 is installed on the machine base 10 so as to open the mouth of the machine. As explained in FIG. 3, when the operating force E is applied from below by the rail 60, the distance between the upper ends of the arms 22 and 23 narrows. A means for filling the bag with an article is provided at position C, and a means for filling the bag with liquid is provided at position D.

In FIG. 1, each chamber 3 supports a lid plate 4 on its opening surface and rotates clockwise intermittently at 72 degrees. At the stop position A, bags are fed onto the surface of the lid plate 4 by the bag feeding means. In addition to the operating force indicated by arrow F in FIG. 5, the operating force indicated by arrow G in FIG. 3 is applied by an air cylinder or the like, so that both sides of the supplied bag Supported.

The chamber that supported the bag moves from position A to B and C.
During the intermittent advance to the position shown in FIG. 3, a force as indicated by arrow G in FIG. 3 is applied by the rail 60 in FIG.
The mouth of the bag is opened. At position C, the bag X is filled with articles by a predetermined means.

At position D, seasoning liquid may be replenished into the bag depending on the case.

Arc-shaped slit 21 formed in rotary valve 5
A plurality of passages 19, 19 are always open,
Since the chambers 20 are connected to a vacuum source through the hose 20, a vacuum is applied to the objects to be packaged within the plurality of chambers 3. While the chamber 3 moves from position D to position E, the chamber is connected to the atmospheric air intake port 61 and air is introduced into the chamber. Immediately thereafter, the lid plate engages the reversing mechanism as described below.

That is, in FIG. 3, the chamber 3 and the lid plate 4 move from the right side to the left side, and the flat dial 62 on the top of the lid plate moves through the slit 49 of the chuck.
It stops at the position inserted inside. in this case,
The rotation pin 36 of the lid plate 4 and the operating shaft 45 of the swinging rod are located on the same axis. When mechanical force is applied to the member 63 and power is transmitted to the actuating shaft 45 via the member 63 in FIG. 6, the two swinging rods 46,
47 and lever 55 are rotated counterclockwise while maintaining their triangular shape. Since the dial 62 is engaged with the slit 49 of the chuck 50, the lid plate 4 is separated from the chamber 3. As shown in FIG.
36, these pins 36, 36
The cover plate 4 is separated from the chamber 3 by the rotation of the frame 8 about the axis. Eventually, as shown in FIG. 7, the second swing rod 47 moves to the stopper 64
Since the rotational movement is blocked by colliding with the
As shown in the figure, the positions of the first swinging rod 46 and the second swinging rod 47 are exchanged. In this case, the slider 53
While forcibly stretching the spring 57,
While sliding along the long hole 52, both swinging rods 4
6, 47 can be exchanged. As a result,
The chuck 50 rotates 180 degrees, and the lid plate 4 supported by the chuck via the dial 62 also rotates 180 degrees. Thereafter, rotational power in the opposite direction is transmitted to the operating shaft 45, so that the turned-over cover plate 4 is brought into close contact with the opening surface of the chamber 3, as shown in FIG. In FIG. 9, the slit 49 of the chuck 50 is oriented in the completely opposite direction to that in FIG. Escape. As the chamber 3 moves H, the plate-shaped pressing plate 65 fixed on the chamber presses and hits the roller 66 at the lower end of the movable pin 54 (see FIG. 3), and as a result, the slider 53 presses the spring 57. It is displaced along the elongated hole 52 while being stretched, and the two swinging rods 46 and 47 are returned to their normal state as shown in FIG. 6, ready to receive the next chamber. Therefore, the lid plates 4 of the chambers that reach position E one after another are turned over one after another at that position. The bag X is supplied to the cover board 4 which has been turned upside down in this manner at the position A, and is filled with articles at the position C. During this time, a vacuum is applied to the article in the chamber 3 from position A to position D, and at position D, the sealing stand 40 shown in FIG. 4 is rotated by an external operating force, and air is introduced into the air pillow 41. Then, the seal bar 42 is operated to melt-seal the opening of the bag X.

The bag receives atmospheric pressure at a position communicating with the atmospheric suction port 61, and is turned over to the outside of the chamber by the lid plate reversing mechanism 7. The bag is then released from the clipper at position A, and a new bag is supplied to the clipper.

(Effects) According to the present invention, each time the chamber and the lid plate that closes the opening surface of the chamber make one round of the endless track, the lid plate is separated from the chamber and rotated by 180 degrees.
After that, the opening surface of the chamber is closed again by the lid plate, so that the bags supported on both sides of the lid plate can be switched from front to back every time the chamber goes around, and a vacuum can be applied. The outer surface of the disc can be used to fill empty bags with items to be packaged, and the outer surface of the lid plate can be used to vacuum package items. For this reason, compared to the conventional single-sided track that performs filling work and vacuum packaging work on packaged items, the vacuum packaging equipment can be made smaller and the installation space for the equipment can be reduced. be.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is a partial vertical cross-sectional view of the previous figure, Fig. 3 is a - line view in Fig. 1, and Fig. 4 is a longitudinal cross-section of the previous figure. 1. Rotor, 3. Chamber, 4. Lid plate, 5. Rotary valve, 6. Clipper, 7.
... Lid plate reversing mechanism, 8 ... Frame, 15 ... Driving shaft, 16 ... Geneva mechanism, 20 ... Hose, 3
6...Pin, 45...Operating shaft, 46...First swinging rod, 47...Second swinging rod, 49...Slit, 5
0...chuck, 52...long hole, 53...slider, 54...movable pin, 55...lever, 57
...Tension spring, 62...Dial, 64
...Stopper, 65...Press plate.

Claims (1)

[Scope of Claims] 1. A chamber and a cover plate that closes the opening surface of the chamber are always rotated together along an endless track, and while the chamber and cover plate are making one round of the endless track, the outside of the cover plate is After supporting the empty bag on the surface, the empty bag is opened and the bag is filled with the packaged material, while the inner surface of the lid board is supported by the surface and located within the chamber. A vacuum is applied to the packaged items in the bag, and then the bag opening is sealed, and each time the chamber and lid plate make one round of the endless track, the lid plate is separated from the chamber and rotated by 180 degrees. After that, the new bag, which is held in close contact with the opening surface of the chamber and supported on the outside of the lid plate, is filled with the packaged items, and at the same time, the packaged items in the bag, which is supported on the back side of the lid plate, are vacuum-filled. A vacuum packaging method that allows 2. Means for intermittently moving the chamber along an endless track so that the opening surface of the chamber faces outward, and means for swinging the chamber in the front direction of the chamber via a pin on a bracket provided on the side surface of the chamber. a frame pivotably supported on the frame, a lid plate rotatably supported on the frame via a shaft and having an area sufficient to close the opening surface of the chamber, and a bag support provided on both the back and front surfaces of the lid plate, respectively. a clip, a dial for operating the lid board provided at the end of a shaft that supports the lid board on the frame, a chuck installed so that the dial engages in the middle of an endless track on which the chamber circulates; a swinging lever that moves the chuck so as to separate the frame from the chamber with an actuating shaft located on the same axis as a pivot pin of the frame relative to the chamber when the chuck is stopped by engagement of the dial; means for rotating the chuck while moving the chuck with a movable rod to turn the lid plate upside down; and a mechanism for returning the swinging rod to its original position to bring the lid plate into close contact with the opening surface of the chamber; A vacuum packaging device comprising means for reducing the pressure inside an airtight chamber while traveling around an endless orbit and sealing the mouth of a bag inside the chamber.