JP2866992B2 - Vacuum packaging machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combination of a rotary bag-packing and packaging device and a rotary vacuum packaging device, and vacuum-packaging of a packaged object by the bag-packing and packaging device by a subsequent packaging device. A packaging machine adapted to do so.

[0002]

2. Description of the Related Art Conventionally, Japanese Utility Model Laid-Open Publication No. 2-102302 discloses that empty bags are suspended and transported by a plurality of sets of clamps provided on a peripheral edge of a disk, and the inside of each bag is rotated while the bag makes one rotation of a circular orbit. After the bags are filled, the bags are transferred to a pressure-resistant chamber that rotates in the adjacent area, and a vacuum is applied to the package and the bag mouth is sealed while the pressure-resistant chamber makes one revolution in a circular orbit. Although a packaging machine is disclosed, in the packaging machine, a fluid object to be packed such as a granular material is solidified in a dumpling at the bottom of the bag under the influence of gravity and vacuum-packaged, and an ugly fold is formed at the top of the bag. There is a defect that. In this respect, Japanese Patent Laid-Open No. 2-1
Japanese Patent No. 80131 discloses a method in which articles packed in a horizontal pillow packaging apparatus are successively transferred onto a horizontal platen rotating along an endless track and vacuum-packaged. Has the advantage that the items to be packaged are naturally flattened in the bag.

[0003]

However, in reality, it is almost impossible to package a fluid with a horizontal pillow packaging device, and even if packaging of a fluid is possible, it is released from the pillow packaging device. Since there is no means for restraining the bags until the bags are transferred to the horizontal platen, there is a problem that the gap between the bags during the transfer is shifted, and it is difficult to seal accurately along the bag rim.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a large number of sets of first clamps are provided at regular intervals along a circular orbit so as to allow the packaged article to be flat and sealed along the bag rim. In this movement, a bag-filling and packaging apparatus in which empty bags hung on each of the first clamps are filled with an object to be packaged, and a number of flat platens are equally spaced along a horizontal endless track. Moving, a part of the endless orbit, successively covering each of the stationary plates with inverted bowl-shaped chambers, changing the surrounding environment of the bagged articles arranged in the chamber to a vacuum state, and changing each bagged article. And a vacuum packing device that seals the opening of the bag packing device, wherein the bag release section from the first clamp in the bag packing device is close to the endless track of the vacuum packing device. Place the device and The means for setting the passage timing between the clamp and each of the surface plates in a one-to-one synchronization relationship, and the main shaft supporting the movable arm horizontally so that the axis of the main shaft coincides with the center of the surface plate on the endless track. The main shaft is supported by a bearing in the upper area of the surface plate, and a second
Means for causing the clamp to catch the bag at the same time as the bag releasing action of the first clamp, and moving the bag supported by the second clamp to an endless orbit at a constant cycle by the rotational power applied to the main shaft. Means for releasing the bag on the platen and means for applying rotational power to the main shaft to return the second clamp to its original position before the trailing first clamp revolves. And

[0005]

According to the timing at which each first clamp rotating the circular orbit at equal intervals releases the bag in the bag release section,
The second clamp on the movable arm catches the bag just before release and transports the bag on a platen moving on an endless track by rotation of the movable arm. Since the axis of the main shaft for rotating the movable arm coincides with the center of the platen, the center of the bag can be aligned with the center of the platen. To release.

The rotation timing of the first clamp in the circular orbit and the rotation timing of the platen in the endless orbit are synchronized one-to-one. On the other hand, if the rotation of the movable arm is performed regularly, it is provided on the movable arm. Since the timing of releasing the bag of the second clamp coincides with the timing of moving the platen, the sealing applied to the bag can always be performed at the same position on the bag.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bag packing apparatus 10 shown in FIG.
A large number of first clamps 12 each of which is a pair of two on the periphery of one
(Only one set is shown) provided radially, the first clamp 12 is intermittently rotated in the direction of arrow 13 by the rotation of the rotor, and the bag 14 hung on the first clamp makes one round orbit. The bag is filled with an article to be packaged, and the first clamp 12 releases the bag 14 in the section shown.

On the other hand, the vacuum packaging device 15 stretches an endless chain 18 in an oblong shape with two large and small chain wheels 16 and 17, and supports a large number of platens 19 horizontally and at equal intervals on the chain. An inverted bowl-shaped chamber 20 is arranged along the periphery of the side chain 16 at the same interval as that of the base plate, and the relative movement between the base plate 19 and the first clamp 12 is in a one-to-one synchronization relationship. Is set to

In the vacuum packaging apparatus described above, when the power of arrow 21 is applied to the chain 16, the platen 19 and the chamber 20 are moved.
As shown in FIG. 8, the chamber 20 moves down on the platen 19 to form an airtight space 22 around the bag 14 and a space 22 through the hose 23. , A seal bar 25 can then be lowered by the actuator 24 toward the seal base 26 to seal the opening edge 27 of the bag.

The frame 28 installed in the loop of the chain 18 has a main shaft 3 supported by a bearing at the tip thereof.
4 coincides with the center of the surface plate 19, and the movable arm 29 supported by the main shaft 34 reciprocates between the surface plate 19 and the bag 14 supported by the first clamp 12 by a 90-degree angle rotation. Details of the configuration are shown in FIG.

In FIG. 2, the endless chain 18 supporting the surface plate 19 via a chain pin 32 travels along a guide rail 31 on a machine base 30, and the surface plate 19 travels with a load applied to a slide rail 33. The axis of the cylindrical main shaft 34 supported by the tip bearing of the inverted L-shaped frame 28 is aligned with the center of the base 19 and the center of the bed 61 supported on the base via a screw rod 65, The movable arm 29 is attached to the plate 35 projecting sideways from the main shaft.
And a Chefoil 40 fixed around the main shaft and a Chefoil 42 supported on the frame via a shaft 41 via a chain 43, and a pinion 44 fixed to the lower end of the shaft. , Air cylinder 4
The first drive mechanism 47 engages with the rack teeth 46 supported by
The movable arm 29 rotates within a 90 degree angle range by the reciprocating motion of the ratchet teeth 46.

A second clamp 37 supported on the movable arm via a pin 36 is connected to a rod 38, and a spring 50 wound around the rod 38 is connected to a pin roll 39 at the other end of the rod.
Is pressed against the peripheral edge of the cam plate 49, and when the resistance of the cam plate 49 to the pin roll 39 is eliminated, the spring 50
The second clamp 37 is closed by the resilience to catch the mouth of the bag 14, and a pinion 51 provided at the lower end of a shaft 48 supporting the cam plate is provided with a cylinder 52 fixed to a movable arm.
The second drive mechanism 54 is constituted by engaging with the rack teeth 53 of the second drive mechanism.

When the movable arm 29 rotates along the arrow 58 as shown in FIG. 3, the pin roll 39 also moves along the peripheral edge of the cam plate 49. However, the pin roll 39 receives the resistance of the first knob 56, 2, the second clamp 37 is opened, and the cam plate 49 is rotated by the operation of the second drive mechanism 54 immediately thereafter to eliminate the resistance of the bump 65, so that the second clamp 37 is released.
Catches the mouth of bag 14. Then, as shown by an arrow 58, the movable arm 29 carries the bag 14 onto the track of the surface plate 19 and stands by. The platen 19 is carried there and the bed 61 scoops the bag 14 as shown in FIG. 4, so that the bag 14 is laid on the bed 61, and immediately thereafter, the second rotation of the cam plate 49 in FIG. Since the knob 57 acts on the pin roll 39, the bag 14
Is released from the second clamp.

In FIG. 4, the timing when the second clamp 37 releases the opening edge 27 of the bag is when the opening edge 27 and the seal base 26 coincide with each other. Occurs, the correcting means operates as follows.

That is, the screw hole 62 formed in the boss below the bed 61 is engaged with the screw rod 65 supported by the two bearings 63 and 64 on the surface plate, and the input shaft 67 supported by the bearing 66. The screw rod is connected via a bell gear 68 and a roller 69 is fixed to the lower end of the input shaft.
0 and 71 are provided, and the sliding terminal 72 fixed to the lower surface of the base plate and the sensors 70 and 71 are connected via lead wires, and the fixed terminal 73 on the machine base is connected to the following controller. I have.

In FIG. 2, a controller 75 is provided below the machine base, and signals from the sensors 70 and 71 are input through leads 76 and 77. The controller 76 and the two motors 80 and 81 are connected by output leads 78 and 79, and the wheels 82 and 83 fixed to the shafts of the respective motors are adjusted to displace the bed 61 along the screw rod 65. Configure means.

FIG. 5 shows the adjusting means, in which the two drive wheels 82 and 83 and two separate driven wheels 84 and 83 are provided.
85, the belts 86 and 87 are tensioned, respectively, and the linear running speed of the roller 69 below the surface plate and the rotation speeds of both belts are set to the same speed. In FIG. When the belt 70 is caught by any of the sensors 70 and 71, a speed difference is formed between the two belts so that the opening edge 27 is along the edge of the seal base 60, and the bet 61 is displaced by the rotation of the screw rod 65. is there.

FIG. 9 shows another embodiment in which the opening edge 27 of the bag is made to coincide with the seal base 26. A base 89 is slidably provided on a guide rail 88 provided below the running track of the surface plate 19. The base is configured to reciprocate at the same speed as the surface plate 19 by the rotation of the chain 90, and the air cylinder 9
A shaft 96 is rotatably connected to the third piston rod 94 via a joint 95, and a friction clutch 97 is provided at the upper end of the shaft 96, while a motor 98 and the shaft 96 are connected via a pair of gears 99 and 100. To connect. Chain 90
Because the friction clutch 69 of the surface plate and the lower clutch 97 always concentrically face each other due to the forward / reverse rotation of the cylinder, the two clutches are pressed against each other by the pressure acting on the cylinder 93, and then the sensor 70 is pressed. , 71 from the signal from
The bed 61 is subjected to displacement adjustment such that the opening edge 27 of the bag is aligned with the seal table 26 by rotating the bag 9 forward and backward.

Pressing mechanism 1 provided above the endless track of FIG.
01, as shown in FIG. 6, two foils 102,
Formed by a bell 104 supported on 103, the belt exerts pressure on the items in the bag from above. In this case, the bag mouth is fixed by the holding hook 105 so that the opening edge 27 does not move on the seal base 26 by the pressure of the belt. That is, the sleeves 106, 1 provided on both sides of the surface plate 19 as shown in FIG.
At 06, a pair of hooks 105, 105 are supported, and the hooks 105, 105 are pulled down by the solenoids 107, 107 to fix both side edges of the bag 14 to the surface plate.

FIG. 3 shows an embodiment in which the movable arm 29 rotates in the range of a 90-degree angle, but four movable arms provided in the 90-degree angle range are intermittently rotated by 90 degrees in the same direction. It is more desirable to rotate and transport the bag in terms of efficiency.

[Effect] The present invention is to rotate a working arm having an axis centered on an endless orbit where a surface plate moves, to catch a bag released by a vertical rotary bagging device, and to a horizontal vacuum packaging device. The structure is such that the bag is automatically laid sideways on the surface plate by utilizing the squeeze action of the surface plate under the bag, and the bag is always restrained by the second clamp of the movable arm. The opening edge of the bag can be released by aligning it with the seal table on the surface plate without displacement. The probability of being able to do along is up.

[Brief description of the drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a cross-sectional view taken along line AA of the preceding figure.

FIG. 3 is a plan view of the previous figure.

FIG. 4 is a sectional view taken along line BB in FIG. 2;

FIG. 5 is a view taken along the line CC in FIG. 2;

FIG. 6 is an explanatory diagram of a pressing mechanism.

FIG. 7 is a DD line view in the previous figure.

FIG. 8 is a sectional view of a chamber.

FIG. 9 is an explanatory diagram of another embodiment.

[Description of Signs] 10-bag filling device, 11-rotor,
12-first clamp, 14-bag, 18-endless track
19 surface plate, 20-chamber, 26-seal stand,
29-movable arm 34-main shaft 37-second clamp 47-first drive mechanism 54-second drive mechanism 6
1-bed 65-displacement means 70,71-sensor
75-controller 86,87-adjusting means 104-pressing device

Claims (3)

(57) [Claims] 1. A plurality of sets of first clamps are moved at regular intervals along a circular orbit, and during this movement, empty bags suspended from each of the first clamps are filled with an object to be packaged. The packaging device and a number of flat platens are moved at equal intervals along a horizontal endless track, and a part of the endless track successively covers an inverted bowl-shaped chamber on each of the stationary plates. A component device for changing a surrounding environment of a packaged product to be placed into a vacuum state and combining with a vacuum packaging device configured to seal an opening of each packaged product, comprising: Means for arranging the two devices so that the bag release section is close to the endless track of the vacuum packaging device, and setting the passage timing between the first clamp and each of the surface plates in a one-to-one synchronization relationship. And the movable arm is horizontal The main shaft is supported by a bearing in the upper region of the base plate so that the axis of the main shaft to be supported coincides with the center of the base plate on the endless track, and the second clamp provided at the distal end of the movable arm has the second clamp. Means for catching the bag in synchronism with the bag releasing action of one clamp; and rotating the bag supported by the second clamp to an endless track by a fixed cycle by rotating power applied to the main shaft. And a means for applying rotational power to the main shaft in order to return the second clamp to its original position by the time the first clamp, which is located downstream, revolves around. Vacuum packaging machine. 2. A bed on which a bag is mounted is slidably supported on a surface plate in parallel with the direction of travel of the surface plate, while a bed supporting the open end of the bag on the surface plate. ,
A controller for providing a plurality of sensors for detecting the open end, a controller for determining the position of the open end from an input signal from the sensor, and defining the seal base in accordance with the output signal from the controller The vacuum packaging machine according to claim 1, further comprising an adjusting means for displacing the bed in the sliding direction so as to match the position. 3. The vacuum packaging machine according to claim 1, wherein a device for applying a pressing force from above the bag to the object to be packaged on the surface plate is provided in the middle of the endless track.