JP3536182B2 - Vacuum packaging equipment for vacuum packaging and shaping of packaging - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum packaging apparatus provided with a mechanism for vacuum-packaging a packed package and a mechanism for flattening the package. 2. Description of the Related Art Conventionally, an apparatus shown in FIG. 5 for simultaneously performing vacuum packaging and shaping of a package is disclosed in an embodiment of Japanese Patent Application Laid-Open No. 2-269615. The apparatus is supported by a multi-hole plate (3) on one side supported by a vibrator (2) and a piston rod (5) of an air cylinder (4) in a pot-shaped pressure-resistant container (1) with an open top. And the other multi-hole plates (6) on the other side are respectively provided in a vertical parallel manner, and the two multi-hole plates (3) and (6) each have a hollow double-sided structure and their facing surfaces (7) and (8). In addition, a large number of suction holes are formed, and the inner hollow portion and the vacuum pump are connected via tubes (9) and (10). In the operation, first put the empty bag (11) for packaging into the container (1) from above, then approach the multi-hole plate (6) in the direction of the arrow (12) with the power of the air cylinder (4). At the same time as the tube (9) (1
By applying a vacuum suction force to the suction holes on the opposing surfaces (7) and (8) of both multi-hole plates via (0), and then moving the multi-hole plate (6) as shown by the arrow (13), Bags (1
1) is greatly open. Therefore, after filling the bag with the items to be packaged, close the open surface of the container (1) with the lid plate (14), and open the hose (15).
Eliminates air in the container via the
(16) (17) Close the pair of seal bars (18) and (19) and rotate the container (1) 90 degrees sideways while welding the bag mouth, then generate vibration in the vibrator (2) As a result, the items to be packaged in the bag move in the horizontal direction and are shaped flat.
In this way, the apparatus can perform vacuum packaging and shaping of the package almost simultaneously in one pressure-resistant container. [0003] However, the above-mentioned device is of a type in which the bag 11 is opened by the perforated plates 3 and 6 in the pressure-resistant container 1 and then the bag is filled with the article to be packaged. For example, in the case of a rotary type configuration in which a large number of pressure-resistant containers 1 revolve on a circular orbit, the opening of the bag and the reduction in efficiency corresponding to the time required for filling the packaged object become a bottleneck, and at the same time, the bag opening section In addition, there is a problem that the diameter of the circular orbit is increased by the size of the section to be packed. It is also possible to supply the bags filled with the items to be packed in advance to the pressure-resistant container, but due to the shape of the items to be packaged, it is difficult to make each bag always adsorb to the same position on the perforated plate. There is also a disadvantage that the same portion of the bag mouth cannot always be sealed. [0004] In order to achieve the above object, the present invention lays down a chamber comprising a pressure-resistant container and a lid plate for closing an opening surface of the pressure-resistant container, and lays the chamber horizontally. the articles to be packaged in the bag which accommodates sideways and vibration applied to said package to a device for flat shaping and vacuum packed in the bag by the vacuum in the chamber, the rotor rotates along the horizontal plane The lid plate horizontally fixed to a number of brackets provided radially around the periphery, and the brackets are suspended on the respective brackets so as to be rotatable toward the lid plate via pins and the opening surface is vertical. and pressure-resistant container, and a clamp for Kiyatchi the bag supplied toward the pressure vessel to form suspended in the pressure vessel, base <br/> Le a lever of said pin, and pivotally supported on the rotor peripheral surface Together linked through a link at one end of the ranks, the wheels of the bell crank and the other end is brought into contact with an annular cam which is arranged along the orbit of the wheel, said pressure vessel with irregularities of the annular cam, the Rotate toward horizontal fixed lid
It is configured such that the vibration is applied to the bag that is closely attached and laid horizontally in a vacuum environment in the pressure-resistant chamber. The cover plate rotates at all times around the entire rotation of the rotor while maintaining a horizontal state. On the other hand, the pressure-resistant chamber rotates integrally with the lid plate with its front face facing outward of the circular orbit while being suspended by the pins. Therefore, it is possible to supply the bag filled with the items to be packed to the clamp from the front of the pressure-resistant container. When the clamp is opened, the vacuum package automatically drops and can be removed out of the pressure-resistant chamber. Since the lever provided on the pin for suspending the pressure vessel is connected to one end of a bell crank pivotally supported on the circumferential surface of the rotor, the wheel at the other end of the bell crank is installed on the annular cam. Since the bell crank is rotated by the inclination of the annular cam and the pressure vessel can be brought into close contact with the horizontal lid plate, and an element for applying vibration to the oscillation plate in the pressure vessel via a rod is provided, The items to be packaged inside are laid sideways together with the pressure-resistant container and are shaped flat by vibration. FIG. 1 is a cross-sectional view of the apparatus shown in FIG. 1, in which a cylindrical bearing 21 is provided on the upper surface of a table-type machine base 20, and a cylindrical main shaft 22 is vertically supported on the bearing. A flat circular rotor 23 is fixed to the upper part of the main shaft, and a gear 24 is fixed to the lower end of the main shaft, and the upper and lower ends of the pinion 2 are rotatably supported by a sleeve 25.
7 and the gear 24 are engaged with each other, and the driving shaft 28 and the drive shaft 26 are engaged via a pair of bevel gears 30 and 31. Therefore, the continuous rotational power of the driving shaft 28 is transmitted to the main shaft 22 via the pinion 27 and the gear 24, and
Then, the circular rotor 23 is rotated counterclockwise as shown by the arrow. Although FIG. 1 shows only one bracket (30), ten brackets (30) are provided around the rotor (23).
(30) are provided radially, the cover plate (32) is fixed horizontally with screws (31) at the end of each bracket, and the diaphragm type air actuator (3
3) and the seal bar (34) inside the cover plate are connected via an operating rod, and the ceiling receiving plate (35) is horizontally supported below the cover plate. A pressure-resistant container (37) is supported on the bracket (30) via a pin (36) in a suspended manner such that the front open surface (38) faces outward, and is circularly formed integrally with the lid plate (32). It rotates along the orbit. The pressure vessel has a seal pedestal (39) formed at the top inside, a pole (41) with a clamp (40) at the upper end, and an operating lever (42) at the lower end of the pole protruding below the pressure vessel. Provided. As shown in FIG. 3, the operation lever (42) is triangular and fixed to the lower end of a shaft (43) rotatably provided at the center of the tubular pole (41). Therefore, while the pressure vessel (37) is rotating in a circular orbit as shown by the arrow (44), the roller (45) of the operation lever (42) is fixed to the cam plate (4).
6), and the operating lever (42) rotates the shaft (43) while stretching the spring (47).
8) rotates away from the fixed claw (49). Operation lever (4
2) and the second lever (51) connected via the link (50) also rotate the shaft (52) at the same time, and fix the movable claw (53) on the other side to the fixed claw (54).
Pull away from. Therefore, at this time, the bag to be filled
When (55) is supplied so as to follow the movement of the pressure vessel (37) as shown by the arrow (56), the roller (45) separates from the cam plate (46) and at the same time, the pair of clamps are pulled by the tension of the spring (47). (40) (40)
Pinches both sides of the bag (55). FIG. 2 schematically shows a bag filling machine (60) provided with a plurality of sets of clamping arms (59) around the disc (58). At the stop position, the empty bag (55) is transferred to the holding arm (59), and thereafter the holding arm (59) supporting the bag (55) is intermittently rotated in the direction of the arrow (61). At the final stop position (62), the bag (55) is filled with the package and the pressure-resistant container (37) as shown by the arrow (63).
After being handed over to the clamp in the pressure-resistant container by the bag-handling machine that follows, the bag-handing machine returns to the original position to receive the next bag in the locus of the dotted arrow (64). Such a bag-handing machine is disclosed in Japanese Utility Model Laid-Open No. 2-102302. As shown in FIG. 1, a pin (36) for suspending a pressure-resistant container
While the lever (66) is fixed to the side wall (67) of the rotor.
One end of a bell crank (69) pivotally supported via (68) and the lever (66) are connected via a link (70), and a wheel (71) provided at the other end of the bell crank is mounted on a machine base. Upper annular rail
The weight of the pressure vessel (37) is supported by being brought into contact with the upper surface of the (72). The upper surface of the annular rail has a predetermined slope, and when the wheel (71) reaches the rising slope of this slope (73), the bell crank (69) rotates and pulls down the link (70), so that the pressure resistance as shown in FIG. The container (37) is rotated toward the lid plate (32) and the sealed chamber (7
Form 4). In FIG. 1, a pipe penetrating vertically through the inside of the main shaft (22) and fixing the lower end to the machine base (77) via the element (76)
(78) is provided with a rotary valve (81) comprising a circular fixed plate (79) fixed to the upper end thereof and a movable plate (80) rotatably provided on the upper surface of the fixed plate, and a lower end provided with a tube ( Connect to the vacuum pump via 82). The other end of a flexible rubber hose (83) having one end fixed to the lid plate (32) is connected to a port (84) that vertically passes through the movable plate (80). The movable platen (80) is pulled by the hose (83) when the lid plate (32) is rotated by the rotor.
Rotates on the upper surface of the fixed platen (79) around the core rod (85). When the chamber (74) is open, the port (84) is not connected to the vacuum source, but at the same time the pressure vessel (37) is in close contact with the lid plate (32), the port (84) passes through the passage (86). To communicate with a vacuum source. For this reason, a vacuum is created in the sealed chamber, and then the seal bar (34) is heated and sealed at the opening edge of the extrusion bag by the actuator (33) toward the seal pedestal (39) as shown in FIG. A lot penetrating through the boss (88) of the pressure vessel (37)
An oscillator (90) is provided at the inner end of (89), and a spring at the other end of the lot is provided.
The repulsive force of (91) normally urges the oscillating plate (90) away from the surface of the bag (55). As shown in FIG. 4, the closed chamber (74) passes through an element (93) that imparts vibration during movement. The element comprises a spindle (9) that passes vertically through the machine base (94).
At the upper end of (5), an angle (96) having an arc-shaped upper surface is fixed, and the lower end of the spindle and the lower crank plate (9)
7) are connected via a link (98). The spindle (95) vibrates up and down by the rotation of the crank plate (97),
By the lot (89) riding on the angle (96),
Since the oscillating plate (90) pulsatively clamps the packaged object with the upper ceiling receiving plate (35), the packaged item is quickly flattened and shaped in a lateral direction in a vacuum. As an element for imparting vibration, an electric vibrator fixed to the outside of the pressure vessel (37) can be connected to the rod (89). According to the present invention, the cover plate is rotated while keeping the horizontal state at all times, and the pressure-resistant container is rotated toward the cover plate. As a result, the horizontal position between the cover plate and the pressure-resistant container is established. Vacuum packaging and shaping of the package are performed. In the chamber open area, the pressure-resistant container is vertically supported, the front rotates outward, and the bag is received by a pair of clampers. The bag received at the above does not sink down due to the weight of the packaged object.Therefore, always seal the same position of the bag mouth to prevent molding of defective shaped products, and place the packaged product in a pressure-resistant container. Since it is possible to supply a bag in a filled state, and it is easy to remove a vacuum and a shaped product, there is an effect that the working efficiency is good and the turning radius of the chamber is small.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial longitudinal front view. FIG. 2 is a plan view. FIG. 3 is a cross-sectional plan view of the pressure vessel. FIG. 4 is an explanatory diagram of an element that imparts vibration. FIG. 5 is an explanatory view of a conventional example. [Explanation of symbols] (23) ... rotor (30) ... bracket (32) ... lid plate
(33)… Actuator (34)… Seal bar
(37)… Pressure resistant container (38)… Front open surface (39)… Seal cradle (40)… Clamp (69)…
Bell crank (74)… Chamber (81)… Rotary valve (90)… Oscillator plate (93)… Element that gives vibration (97)… Crank plate

Claims (1)

(57) [Claim 1] A chamber comprising a pressure-resistant container and a lid plate closing an opening surface of the pressure-resistant container is laid horizontally, and a package to be packaged in a bag housed horizontally in the chamber is provided. An apparatus for flattening and vacuum-packing an article in a bag by vibration applied to the article to be packaged and decompression in a chamber, wherein a number of brackets are provided radially around a rotor rotating along a horizontal plane. Said lid plate fixed horizontally to each,
The pressure-resistant container, which is rotatable toward the cover plate via a pin on each of the brackets and suspended so that the opening surface is vertical, and the bag supplied toward the pressure-resistant container is placed in the pressure-resistant container. And a lever provided on the pin is connected to one end of a bell crank pivotally supported on the rotor peripheral surface via a link, and a wheel at the other end of the bell crank is connected to the wheel by the wheel. The annular container is brought into contact with the annular cam arranged along the orbit of the orbit, and the pressure-resistant container is rotated and brought into contact with the horizontally fixed lid plate by the unevenness of the annular cam, and is laid horizontally in a vacuum environment in the chamber . Further, an apparatus configured to apply the vibration to the bag.