JPH0634261Y2 - Deaeration device for bag mouth sealing machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention deaerates the inside of a synthetic resin bag containing various foods, favorite foods and other items when the mouth of the bag is sealed. Regarding the device.

[Conventional technology and its problems]

A machine for sealing the mouth of the synthetic resin bag, a so-called sealing machine A, will be described with reference to FIGS. 1 and 2. The belts 1a and 2a of the upper and lower belt conveyors 1, 2 are overlapped with each other. The bag mouth heating sealer 3 and the bag mouth cooler 4 are arranged along the outward path, and the flat belt conveyor 5 for conveying the bag a is arranged along the entire length of the front side of the outward path. When the bag a containing the articles is placed on the starting end of the belt conveyor 5 and the mouth portion b of the bag a is bitten into the starting ends of the outward paths of the belts 1a and 2a, the bag a moves as the conveyors 5 and 1 and 2 travel. Then, in the middle of the process, the mouth b is heat-sealed by the bag mouth heat sealer 3, the heat seal mouth b is cooled by the bag mouth cooler 4, and the bag a is discharged from the end of the outward path.

By the way, when the articles are stored in the bag a and the mouth b thereof is sealed, air is enclosed in the bag a and becomes bulky, which is troublesome to handle and causes a hindrance in the stacking in the box packaging. Therefore, conventionally, deaerators described in Japanese Utility Model Laid-Open No. 58-38288, Japanese Utility Model Laid-Open No. 61-186504, and Japanese Patent Laid-Open No. 59-1332 have been devised.

However, the devices described in both former publications have the belts 1a and 2a.
Since the intake port is provided in the overlapped part of the forward path of the belt 1a,
There is a problem that the bag mouth b is closed by the tension of 2a and the bag a cannot be smoothly sucked. The technique disclosed in Japanese Utility Model Laid-Open No. 61-186504 has an air intake means for separating the belts 1a and 2a, but since the tension of the belts 1a and 2a is strong, the bag b is not sufficiently opened by the air intake and the air intake is sufficient. It may not be done.

In the device described in the latter publication, the belt 1a and 2a are separated from each other on the forward path start end side to form a gap, and air is taken in through the gap, so that there is no problem in the former publications.

However, in the conventional sealing machine, as shown in FIG. 1, the upper and lower belts in the upper and lower pulleys 6 and 7 on the forward end side of the forward path.
The lower end 1a 'or the upper end 2a' of the respective overlapping surfaces (the surface holding the bag mouth b) of 1a and 2a are set to substantially the same level h. Therefore, in order to attach the device described in the latter publication to the conventional sealing machine, it is necessary to change the positions of the upper and lower pulleys 6 and 7, the work becomes complicated, and the apparatus is not attached to the existing sealing machine. There wasn't. Therefore, the device described in this publication is conventionally provided only integrally with a novel sealing machine.

In addition, if the forward ends of the belts 1a and 2a are separated,
A guide roller is provided at the portion where 1a and 2a overlap, and the bag mouth b
Of the guide rollers,
The cost will increase. Further, the large pulleys 6 and 7 are displaced outward from the conveying path (the full length path where the belts 1a and 2a overlap each other), and the lower end 1a 'and the upper end 2a of the upper and lower belts 1a and 2a as in the sealing machine A shown in FIG. Compared with the ones with the same level, the entire sealing machine becomes larger due to the deviation. In today's machine installation space is a problem, increasing the size is a disadvantage.

Then, this invention makes it a subject to provide the deaerator which does not invite enlargement of a sealing machine and can be attached also to the conventional sealing machine.

[Means for Solving the Problems]

In order to solve the above problems, in the present invention, in the deaerator attached to the above-mentioned sealing machine, a pair of upper and lower guide plates in the forward direction of the upper belt are provided toward the overlapping start ends of the upper and lower belts, The upper and lower gaps of the two guide plates are gradually fitted toward the starting end of the overlapping, and the fitted ends of the two guide plates are set as a gap of opening degree that allows the bag mouth to bite into the starting end of the overlapping of the upper and lower belts. In addition, a structure is adopted in which the air intake port connected to the air suction device is faced to the gap between the two guide plates.

[Action]

In the degassing device according to the present invention having such a structure, when the mouth of the bag containing the article is pushed between the guide plates, the bag is degassed by the intake air from the intake port and the bag becomes smaller in volume. . In that state, when you slide the guides between the guides toward the stacking start ends of the upper and lower belts, the gap between the guide plates is gradually fitted, so the bag mouth is gradually fit and bites into the stacking start end. With the degree of opening obtained, it is bitten by the upper and lower belts, and its mouth is held by the belt and moved to the bag mouth sealer for sealing.

〔Example〕

First, the sealing machine A, as described above, as shown in FIG. 1 and FIG.
The forward paths a and 2a are overlapped with each other, and the bag mouth heating and sealing device 3 and the bag mouth cooler 4 are arranged along the outward path, and the flat belt conveyor 5 for bag conveyance is arranged along the entire length of the front side of the outward path. However, the upper and lower belts 1a, 2a of the upper and lower pulleys 6, 7 on the forward end side of the forward path have substantially the same level h at the lower end 1a 'or the upper end 2a' of the overlapping surface.

An air suction box 8 is attached to the machine frame B by bolts in front of the upper and lower pulleys 6 and 7 (on the right side in FIG. 1), and a pair of upper and lower guide plates 9 in the forward direction are attached to the front surface of the box 8. 9 is provided. The guide plates 9, 9 are
The vertical gap t is the starting end point c of the upper and lower belts 1a and 2a.
The bag mouth b faces the start end of the upper and lower belts 1a and 2a as a gap t having an opening degree that allows the bag mouth b to bite into the start ends C of the upper and lower belts 1a and 2a. The intake port 10 of the air suction box 8 faces the gap t, and when the inside of the box 8 is sucked by a known suction means such as a suction blower, the inside of the gap t is sucked from the suction port 10.

Therefore, when the mouth portion b of the bag a containing the article is put into the gap t, the inside of the bag a is sucked through the opening of the mouth portion b and deaerated. If the degassed bag a is slid between the guide plates 9 in this state and guided to the stacking start end c,
The mouth b is held between the upper and lower belts 1a and 2a, and thereafter, the bag a moves as the belt conveyors 5, 1 and 2 travel. As in the conventional case, the bag a is a bag mouth heat seal in the middle thereof. The mouth b is heat-sealed by the container 3, and the bag mouth cooler 4
Then, the heated seal mouth portion b is cooled and discharged from the end of the outward path.

In addition, the above-mentioned guide plate 9, 9 corresponding to the intake port 10
As shown in FIG. 6 and FIG. 6, if an intake box 12 is used and suction is performed through the through hole 11 in this box 12, as shown in FIG. Will be smooth. At this time, the degree of intake in the box 12 is set to a level that does not hinder the movement of the guide plates 9 and 9 of the account b.

[Effect of device]

As can be understood from the above explanation, this device is
Since the air is degassed before the overlapping portion of the pair of upper and lower belts, there is no influence of the tension of the belt, and the degassing is smooth.

Further, even if the upper and lower pair of belts of the pair of upper and lower belts on the starting end side of the upper and lower pair of belts have the same overlapping surface lower end or the same level, they can be easily attached. That is, it can be attached to the conventional sealing machine by a simple operation such as bolt tightening.

[Brief description of drawings]

FIG. 1 is a schematic front view of an embodiment of a deaerator for a bag mouth sealing machine according to the present invention, FIG. 2 is a right side view of FIG.
FIG. 4 is an enlarged view of a main part of FIG. 1, FIG. 4 is a right side view of FIG.
FIG. 5 is a front view of essential parts of another embodiment, and FIG. 6 is a cut side view of the same embodiment. 1, 2 ... Belt conveyor, 1a, 2a ... Belt, 3 ... Bag mouth heating and sealing device, 4 ... Bag mouth cooler, 5, 7 ... Flat belt conveyor for bag conveyance, 6, 7 ... Pulley , 8 ... Air suction box, 9 ... Guide plate, 10 ... Intake port, 11 ... Through hole, 12 ... Intake box, a ... Bag, b ... Port, c ... Stacking of upper and lower belts Alignment start end, t ... Guide plate gap.

Claims (1)

[Scope of utility model registration request] 1. Degassing for attaching to a bag mouth sealing machine having a pair of belt conveyors having upper and lower belt conveyors 1 and 2 whose both ends are wound around pulleys 6 and 7, and a bag mouth sealing device 3 is provided on the outward path. In the apparatus, the pair of upper and lower guide plates 9 and 9 in the forward path are provided toward the overlapping start end C of the upper and lower belts 1a and 2b, and the upper and lower gaps t of both guide plates 9 and 9 are overlapped with each other. Gradually fit toward the starting end C, and both guide plates 9,
The narrowed end 9 is made to face the starting end C as a gap t having an opening degree that allows the bag mouth b to bite into the overlapping starting end C of the upper and lower belts 1a and 2b, and the guide plates 9 and 9 are A deaerator for a bag mouth sealing machine, characterized in that an air inlet 10 connected to an air suction machine is exposed to the gap t.