JPS6077842A - Packer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a packaging device for packaging an object by placing it in a flat bag.

Retort pouches used for packaging cooked foods are often flat bags with an opening that can be opened and closed on only one side, as shown in FIG. It is a flexible bag that can be heat sterilized at around 120 degrees Celsius and is usually made of laminated aluminum foil-based sodium. Once the packaged item is placed inside, the bag can be opened and closed with a seal (melted). Young) Complete the packaging.
It's even more so.

The equipment for this type of packaging consists of a conveyor that holds and intermittently transports packages, a mechanism to open the closed bag, a mechanism to fully inflate the bag, and 7 to place the items to be packaged into the bag. It has a mechanism that closes one opening and a sealing mechanism that closes one opening. In other words, put soil in the mouth of one bag and take the bag to the conveyor.2
Packaging is completed during each 21 days of intermittent movement.

The flat bag still attached to the conveyor is closed on one side, and you are asked to open it first.

Next, in order to inflate the bag sufficiently, the open mouth is covered with a nozzle body, and pressurized gas is introduced through the nozzle body.

In the next step, the items to be packaged are placed in a fully expanded bag and sealed.

In this way, packaging is completed, and the products are removed from the conveyor and packed into boxes as appropriate.

However, in the step of opening the bag mentioned above or in the step of fully inflating one bag, an opening failure may occur. In this case, if you try to load the packaged items in the next step, the packaged items will overflow and contaminate the machine.

These opening failure states are, as shown in FIG. 2(A), when the bag 1 is not properly gripped by the conveyor claw 11 and the opening is not sealed by the nozzle body 50 and the bag 1 is not inflated sufficiently. .

Alternatively, as shown in Figure 2 (B), the mouth of each bag 1 is not opened at all, or as shown in Figure 2 (C), several bags 1 are taken out at the same time and one bag is removed. There are cases where the patient's mouth seems to open for a moment.

The present invention aims to provide a packaging device that does not require packaging items to be thrown in when such opening defects occur, and therefore does not contaminate the two machines. a conveyor that transports the bags one by one, a mechanism that opens the bag 1'' during conveyance, and a nozzle body that can come into contact with and separate from the opened bag. A mechanism for introducing pressure gas to inflate the bag, a loading device for loading the packaged items into the bag, and a mechanism for tightly sealing the openings of the two bags. In a packaging device equipped with a sealing mechanism that is equipped with This is a completely new device equipped with an electric control circuit that controls the charging device.

In other words, internal pressure is applied to one bag, and if the internal pressure is not as high as 100%, it is assumed that the opening is defective, and the flannel package is not put into the bag in the first step.

According to this packaging device, there is no possibility that the items to be packaged will overflow and contaminate the primary machine.

Hereinafter, the present invention will be explained with reference to a device according to one embodiment shown in FIGS. 3 to 6.

7 is 5, keep 1 empty bag in stock 11! The two bodies are fixed to the frame 8 with bag macannons. 9 is.

A known vacuum suction cup for taking out the bags 1 one by one from the empty bag magazine 7 is used to take out each bag 1, and the bag 1 is moved downward as shown by the two-dot chain line to be carried to the delivery roller 10. The delivery roller 10 is constantly rotating.

The empty bag 1 is fed to a predetermined position of the gripping claw 11. so that the bag gripping claws 11 attached to the chain conveyor 12 consisting of a pair of roller chains are intermittently stopped at a predetermined position directly below the tangent to the delivery roller 10;
The chain conveyor 12 is mechanically timed.

9] is a bag detector, the details of which are shown in FIG.

Reference numeral 71 denotes a support plate having two long holes 73, and is fixed to bolts 72 erected on the main body frame 8 with slots 74. Reference numeral 76 has an L-shape and a boss 77 is attached to the bulge, and this boss 77 is rotatably attached to a pin 80 erected on the support plate 71.

82 is a tension spring, one end of which is attached to an arm 83 integrated with the boss 77, and the other end of which is attached to a bolt 8 fixed to the support plate 71.
4 and push the above-mentioned /76 clockwise in the figure. A magnetic body 85 is attached to the tip of an arm 86 that is integrated with the boss 77.

It is arranged so as to face the proximity switch 87 attached to the support plate 71. Naso t for support play 171
- The stop bolt 88 fixed at 89 is connected to the arm 86
The swing angle is within the range of swing.

Note that the output of the proximity switch 87 is output from the electric control circuit 70 (
(see Figure 6).

Reference numeral 20 denotes a vacuum suction cup for opening the mouth of the bag 1, which is attached to an opposite lever 21, and the lever 21 is connected to the shaft 2.
2 as a fulcrum, it can swing -IJC according to the opening state of the bag 1.

Reference numeral 90 denotes an opening failure detector, the details of which are shown in FIG. 6 and labeled C. 50 is a nosle body that seals the mouth of bag 1 (5111)
The shape of one side is formed to be similar to the shape of the opened mouth of the bag 1. A high pressure 3111 air passage 51 and a low pressure air passage 52 are formed in the nozzle body 50.

The upper end of the high pressure compressed air passage 51 is connected to an air pipe 53.
The air vibrator 53 is connected to a compressed air source (not shown), and has a pressure of 1 to 2,5 kg/cIl.
The air installed in the tank is supplied. Further, the inner diameter of the lower end 51a of the high-pressure compressed air passage 51 is narrowed. An air chive 55 is connected to the low pressure air passage 52, and the air chive 55 is connected to a pressure detection switch 69. The pressure detection switch 69 detects the low pressure (usually 0.005 to 0.0
．． 05 to υ shoulder) is detected and an output signal is sent to the electric control circuit 70. Reference numeral 62 denotes a duct that is supported by appropriate means (not shown) to be movable up and down on the main body frame 8. A cover tube 68 is integrally attached to a support plate 64 fixed to the duct 62 by a bolt 63, and the air vibe 53 and air chive 55 pass through the cover tube 68.

A compression spring 61 is interposed between the support plate 64 and the collar 57 fixed to the air vibrator 53, and constantly pushes the air vibrator 53, that is, the nozzle body 50 downward. Note that 65 is a guide bin that protrudes from a collar 58 that is integrally fixed to the upper end of the air pipe 53, and is fitted into a hole 66 formed in the support plate 64. Therefore, it can be a nozzle.

The chain conveyor 12 has a driving sprocket 1""J-no1
23 in the direction of the arrow, and the transfer distance (1 pitch) is P. The drive sprocket 23 is configured such that rotation is given to an indexing device 24 fixed to the two body frames 8 through a rotation shaft 25, but the input shaft of the one index M24 is attached to the two body frames 8. Support, 5 motor 26
It is connected via a camp ring 27 from a power source such as the like. 28, 29, 3o, 31 are driven sprockets, 32
1 is a discharge station 1 into which the packaged items are input and the bag I" of the bag 1 is sent out of the unrolled bag product Iat machine.

Reference numeral 33 denotes a charging device for loading a ponova into which the items to be packaged are placed, and is a known device that inputs a predetermined amount of items to be packaged from the "L" of the bag 1 through a nozzle 34.
controlled by 35 is a sealing device for sealing the opening of the bag 1 containing the goods to be packaged; It is something.

Now, take out the empty bags 1 one by one using the vacuum mold 9,
The bag 1 is fed to the transfer roller 10 as shown by the two-dot chain line in FIG.

Next, when chain conveyor I2 moves by two dimensions, seven bag detector 91 is activated. In other words, since the lever 76 is at the passing position of the side surface of the empty bag 1, if two bags 1 are held by the bag gripping claws 11, the lever 76 swings and the magnetic body 85 approaches the proximal gap 87. A detection signal indicating "Yes" is output to the electric control circuit 70.

After the next movement of the chain conveyor 12, the vacuum suction cup 20
1'' of bag 1 is opened.

In the next step, the bag 1 is sufficiently inflated and each bag 1 is inspected for opening failure using the opening failure detector 90.

In other words, the nozzle body 50 is supported by the duct 62 which is lowered by an appropriate means (not shown).

Seal the opening of bag 1. On the other hand, an air pipe 53 connected to an air compression source (not shown). High-pressure compressed air is supplied into the bag 1 through the high-pressure compressed air passage 51, and the two bags 1 are fully inflated. At this time, the pressure inside one bag 1 is guided to the pressure detection switch 69 via the low pressure air passage 52 and air chive 55 formed in the nozzle body 50. When an internal pressure higher than the predetermined pressure set by the pressure detection switch 69 is detected, the pressure detection switch 69 sends a signal to the electric control circuit 70.
Gives a signal indicating that the opening is normal. Conversely, if it is below the set value,
In other words.

In the state shown in FIG. 2, no pressure is built up, so a signal indicating ``1 open/low failure'' is output to the electric control circuit 70.

Thereafter, the two bags 1 are transported with their mouths open due to their own rigidity, and are transferred to a nozzle 34 of a charging device 33, stopped at that position, and the items to be packaged are loaded. After the bag 10 is sealed by the sealing device 35, one bag of products 1a is discharged onto the conveyor 3.
2 and was ejected from the aircraft.

The electric control circuit 70 is a single bag detector 91. and.

When the output of the opening failure detector 90 indicates that one bag is not being gripped, or when the bag gripping claw 11 that has gripped a bag with opening failure comes to the position of the input device 33.

The operation of the charging device 33 is stopped.

Therefore, in the packaging package of one embodiment of the present invention;
.

The maintainability of the machine is improved because there is no need to worry about putting the packaged items into the bag, and there is no need to worry about the machine being damaged by the packaged items.

Improved operability and productivity.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a bag used in the device of this invention. FIG. 2 is an explanatory diagram of poor opening. FIG. 3 is a plan view of the device used in this invention. FIG. 4 is a front view of FIG. 2. Figure 5 is a diagram of the bag detector. Figure 6 is a diagram of the opening failure detector. 1. Bag, 11. Bag gripping claw, 20. Vacuum suction cup. 35... Seal device, 50... Nozzle body. 90... Poor opening detector, 91... Bag detector $2D (A
) Month 21jA (B) 4th threshold 5th layer

Claims (1)

[Scope of Claims] A conveyor that conveys flat bags one by one having an opening that can be opened and closed only on the upper side, a mechanism that opens the opening of the bag during conveyance, and a mechanism that is capable of coming into contact with and separating from the opening of the opened bag. a mechanism for inflating the bag by introducing pressurized gas into the bag through the nozzle body; In the packaging device, the packaging device includes a loading device for loading the packaged items into the bag and a sealing mechanism for sealing the opening of one bag, and a pressure detector for measuring the internal pressure of the bag in a state where the pressure gas is introduced; A packaging device comprising: an electric control circuit that controls the loading device based on the output of the pressure detector.