JP2906000B2 - Vacuum packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for creating a vacuum environment in an airtight pressure-resistant chamber, and packing a large number of products in parallel between two upper and lower films under this vacuum environment.
The present invention relates to a vacuum packaging apparatus which moves the vacuum packaged product under a cutting blade and separates the vacuum packaged product into individual vacuum packaged product units with the cutting blade.

[0002]

2. Description of the Related Art As a conventional apparatus as described above, Japanese Utility Model Laid-Open No. 58-59702 or U.S. Pat.
The disclosure is found in US Pat. In this conventional apparatus, a lower film in which products are arranged in parallel is placed on a base plate, and the product is integrated with the base plate and loaded into a pressure-resistant chamber divided into upper and lower parts. The pressure chamber is sealed so as to be sandwiched by the side chamber, and the air in the pressure chamber is drawn out to create a vacuum environment, and then the pressure chamber is released to the atmosphere. Is crimped onto the product, thus first forming a vacuum packaged product at one location. Subsequently, the vacuum packaged product is conveyed under a cutting blade by a conveyor, and the film is cut by the cutting blade and separated into individual vacuum packaged product units.

[0003]

In the above-mentioned apparatus, an operator for carrying goods into the pressure-resistant chamber integrally with the base plate is stationed near the pressure-resistant chamber, and separates each product separated by a cutting blade. An operator is stationed near the cutting blade to remove it from under the cutting blade and return the used base plate to the pressure-resistant chamber. Such a style requiring two workers is not desirable in terms of labor cost control. It is not impossible for a resident worker near the pressure chamber to carry out both tasks, but every time the vacuum packaged product is separated, the worker must repeat the movement from one place to two places, It is problematic in that it is very cumbersome and adds fatigue. Therefore, the present invention
It is an object of the present invention to provide a device in which one worker who always stays at the same place can perform both operations.

[0004]

According to the present invention, in order to achieve the above object, a main shaft is rotatably supported between a lower machine base and a top plate fixed to the machine base and opposed to the upper machine. A movable bed supported by the main shaft such that the main shaft is the central axis; two lower chambers of an open top type fixed on the movable bed so as to separate the main shaft; A lower-opening upper chamber fixed to the top plate so as to face the upper surface of the lower chamber, and a cutting blade support frame supported by the top plate so as to face the upper surface of the other lower chamber; A motor for transmitting power to a main shaft for rotating the lower chamber integrally with the movable bed between the upper chamber and the cutting blade support frame, and integrating the lower chambers with the movable bed in the stopped position. On the spindle Means for raising a vacuum chamber, means for creating a vacuum environment inside the lower chamber and the upper chamber, and then returning to atmospheric pressure, and means for introducing a film between the upper and lower chambers. .

[0005]

[Function] When the lower chamber moves up along the main shaft integrally with the movable bed and comes into close contact with the upper chamber, the upper and lower chambers are closed, and the air in the pressure-resistant chamber is sucked at the same time, creating a vacuum environment inside. Produced. When the lower film and the product are placed and placed in the lower chamber in advance, the atmospheric pressure acts in the pressure-resistant chamber, so that the upper film sandwiched between the upper and lower chambers becomes a lower film with a pressure difference. The product is pressed and vacuum-packed between the upper and lower films. Then, when the lower chamber moves down and separates from the upper chamber, the lower chamber is rotated 180 degrees by the motor together with the movable bed, and one lower chamber moves to the lower side of the cutting blade support frame. . In this case, the lower chamber on the other side moves to the lower side of the upper chamber. Then, when the lower chamber moves up again, the film wrapping the vacuum packaged product in the lower chamber is pressed against the cutting blade support frame and cut.
In this case, the lower chamber on the other side is pushed up toward the upper chamber, so that another product is vacuum-packed here. When both lower chambers are moved down again and the movable bed is rotated, the newly vacuum-packaged product moves to the lower side of the cutting blade support frame, while the cut and separated vacuum-packaged product is occupied by a worker. It returns to its original position and is collected at that position.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1A and FIG.
A top plate (12) is fixed to the upper ends of four pillars (11) erected around (0), and the top plate (12) and the machine base (10) are faced up and down at a predetermined interval. Along with the bearings (1
3) and the bearing (14) provided on the bottom of the machine base (10)
(15) is rotatably supported, and the key (16) slides on the spindle (15).
And a movable bed (17) is supported on the main shaft (15) in a state of being engaged with the sliding key. Further, two lower chambers (18) and (19) are fixed on the movable bet (17) with the main shaft (15) interposed therebetween, while a gear (20) fixed to the main shaft between the machines.
A first motor (22) is connected via a pinion (21), and the first motor (22) connects the main shaft (15) and the movable bed (17).
Can be flipped 180 degrees at a time. Further, two cams (23) and (24) are supported below the movable bed (17) via shafts (25) and (26), and both cams (23) and (24) are supported via a chain (27). In addition to the connection, the cam and the second motor (28) are connected via a chain (29). The two cams (23) and (24) rotated by the second motor (28) integrally connect the movable bed (17) and both lower chambers (18) and (19) when the lower chamber is at the stop position. Is moved upward for a certain period of time.

As shown in detail in FIG. 2, a cylinder (31) is mounted on the lower surface of the lower bet (18) fixed to the movable bet (17).
The surface plate (33) is fixed to the upper end of the ram (32) of the cylinder, and a vacuum suction hose (3
4) is connected. Further, an upper chamber (35) having an open bottom surface is mounted on a bracket (3) above the lower chamber (18).
6) and placed on the top plate (12) via the upper chamber (3
A heating plate (37) is provided at the lower opening of (5), and a vacuum suction hose (38) is connected to the upper surface of the upper chamber. Furthermore, the upper and lower chambers (18) (35) are rolled by a pair of draw rolls (41) (42) and a chain (45) installed on the foils (43) (44). ). Upper chamber as shown in FIG.
The endless chains (45) and (45) are supported on both sides of (35), and these chains (45) are provided with three clamps (46), (47) and (48) respectively as shown in FIG. The heater wire (50) provided in the lower chamber (18) comes into contact with the film (40) when the lower chamber (18) moves upward, and cuts at the position where the film comes into contact. Also, as shown in FIG. 4, cams (51) and (51) are provided coaxially with the foil (44), and when the clamp (46) is turned around the shaft (52), the spring rod ( 53) comes into contact with the cam (51), the clamp (46) is released, and the film (40) is released from the clamp.

As shown in FIG. 1A, a work table (55) having substantially the same height as the upper surface of the lower chamber (18) is provided in a part of the machine base. After the lower film is laid on the base plate (56) on which the products (57) are arranged, the base plate (56) is supplied into the lower chamber (18).
Then, as shown in FIG. 2, the lower chamber (1
8) is moved upward toward the upper chamber (35), the upper film (40) is clamped between the upper and lower chambers (18) and (35), and at the same time, air in the chamber is passed through the hoses (34) and (38). Suction. In this case, the platen (33) is previously moved down by the ram (32). When the inside of the pressure chamber becomes a vacuum environment, the air is first introduced into the upper film (40) from the upper hose (38), and the film previously heated by the heating plate (37) stretches. And can be vacuum-packed between the upper and lower films.

When the two lower chambers (18) and (19) are rotated together with the movable bed (17) by an angle of 180 degrees, as shown in FIG. 3, the vacuum packaged product (58) becomes a cutting blade support frame (59). Stop below the. The support frame is provided with a plate blade (61) in a square shape on the lower surface of the plate (60), while an extension spring (62) is interposed between the plate (60) and the top plate (12), and Plate (60)
A bar (63) that supports the top plate (12) is disposed in the cylinder (64) so that the discharge pressure of the pump (65) acts on the cylinder (64). Pump (6) acting in cylinder (64)
Normally the plate (60) is springed by the discharge pressure of 5)
(62) is held so as to be compressed and pulled upward. The movable bed (17) and the lower chamber (19) are moved upward by the rotation of the cam (23), and the switch (67) is actuated by the movement of the movable bed (17) during the upward movement, and the electromagnetic switching valve (66) is moved. When the switching is performed, the pressure in the cylinder (64) is released, so that the cutting blade support frame (59) moves down rapidly by the repulsive force of the spring (62).
As a result, the lower moving speed of the cutting blade support frame (59) is added to the upper moving speed of the lower chamber (19).
(61) vigorously sinks into a groove (68) formed in the base plate (56) to cut the film.

As shown in FIG. 6, two lower chambers (18) (1)
The vacuum line (70) (71) of (9) is connected to the switching valve (72).
In the drawing, one lower chamber (18) is a vacuum pump (73)
But the two lower chambers (18) and (19)
When moving by the 0 degree angle, the switching valve (72) is operated, and the lower chamber (19) on the other side is connected to the vacuum pump (73).
Air suction in the upper and lower chambers (18) and (35) is started via another switching valve (74), and the switching valve (7
By switching 4), the air is introduced into both chambers (18) and (35). Ram cylinders (30) (3
1) are connected to hydraulic circuits (76) and (77), respectively, and switching valves (78) and (7)
9), pressurizing pump (80) (81) and suction pump (82) (8
The platens (33) and (70) are operated in 3).

[0011]

According to the present invention, the two lower chambers provided on the movable bed are repeatedly rotated together with the movable bed within a range of 180 degrees, and each time the lower chamber is moved toward the upper chamber and the cutting blade support frame. It is made to move up,
When vacuum packing operation is performed by raising the lower chamber on one side, the vacuum packaged product is separated by moving the lower chamber on the other side, and the separated product can be moved to the original position and collected. There is an effect that one worker can supply and collect the product without moving the station.

[Brief description of the drawings]

FIG. 1A is a side view showing an embodiment of the present invention.

FIG. 1B is a plan view showing a state in which a top plate is removed from the previous figure.

FIG. 2 is a partial sectional view of A in FIG. 1;

FIG. 3 is a partial sectional view of A in FIG. 1;

FIG. 4 is a front view of a film drawing device.

FIG. 5 is a side view of the film drawing device.

FIG. 6 is an explanatory diagram of a circuit diagram.

[Explanation of symbols]

(10) ... machine stand (12) ... top plate (15) ... spindle (17) ... movable bed (18) (19) ... lower chamber (23) (24) ... cam (35) ... upper chamber (40)
… Film (45)… Chain (46) (47) (48)… Clamp (56)
… Base plate (57)… Product (59)… Cutting blade support frame (61)… Plate blade

Claims (3)

(57) [Claims] 1. A top plate supported and disposed on a plurality of pillars erected on the machine stand in an upper region of a lower machine stand, and both ends supported by the machine stand and the top plate for rotation A vertically installed main shaft, a movable bed supported on the main shaft such that the main shaft is the center axis, and two lower surfaces of an open-top type fixed to the upper surface of the movable bed with the main shaft separated from each other. A chamber, an upper chamber fixed to the lower surface of the top plate so as to face the upper surface of the one lower chamber, and a cutting blade support frame supported by the top plate so as to face the other lower chamber. A motor transmitting power to the main shaft for rotating the lower chamber integrally with the movable bed between the upper chamber and the cutting blade support frame; and Each time you move between the support frame Means for moving the moving bed up along the axis of the main shaft to bring both lower chambers into contact with the upper chamber and the cutting blade support frame, and preparation for supplying the packaged goods to the lower chamber on the upper chamber side A vacuum packaging apparatus comprising: a work table; a unit for feeding a film between the upper and lower chambers; and a unit for creating a vacuum environment in the upper and lower chambers and then returning the pressure to the atmospheric pressure. 2. The vacuum packaging apparatus according to claim 1, further comprising means for lowering the cutting blade support frame toward the lower chamber when the lower chamber moves upward together with the movable bed. 3. A means for lowering the cutting blade support frame toward the lower chamber includes a spring interposed between the cutting blade support frame and a top plate above the cutting blade support frame, and the spring is compressed by a pressing means. 3. The vacuum packaging apparatus according to claim 2, wherein the pressing force of the pressing means is released after the cutting blade support frame is moved upward and held so that the repulsive force of the spring acts on the cutting blade support frame.