JPH0513901U - Residual air removal device in the bag - Google Patents

Abstract

(57) [Summary] [Purpose] Efficiently remove the residual air in the bag 10 containing the article to form a bag containing the article with less residual air. [Structure] An upper portion of a bag 10 containing articles in which a bag 4 is filled with an article 5 such as powder or granules and an upper portion of the bag is opened from a position facing the outside of the bag by a pair of left and right pressing devices 1, In the residual air removing device in the bag, which is pressed toward the upper surface of the article 5 in the bag to remove the residual air in the bag to the outside, each pressing device 1, 1 has an outer surface of the bag 4. The pressing member 3 that is pressed from the top toward the upper surface of the article 5, and the pressing member 3
The pressing member 3 is formed of a tube 31 whose surface is elastically deformable according to its shape when the pressing member 3 is sealed inside and pressed against the article 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a residual air elimination device for eliminating residual air in a bag containing articles in which an article such as powder or granules is filled.

[0002]

[Prior Art]

 Items such as powders are stored in a bag after being filled into the bag in fixed amounts and then sealed and sealed in the upper opening of the bag. Since many bags containing such articles are stored in a state of being stacked on a pallet at the time of storage, and they may be handled relatively roughly at the time of unloading, there is a risk of bag breakage. The cause of this bag breakage is that the residual air in the bag is a problem, and the more residual air, the easier it is to break the bag.

The residual air in the bag containing the articles is removed before the bag opening is sealed, but conventionally, the residual air in the bag is removed by using the residual air removing device as shown in FIG. 5 or 7. Had been eliminated.

In the conventional residual air elimination device shown in FIG. 5, a spatula plate 103 bent in a “<” shape is swung up and down by air cylinders 102 from both left and right sides of an article bag 110. It is provided with a pair of pressing devices 101, 101. On the other hand, the bag 110 containing articles is conveyed to the residual air elimination work position on the conveyor 111 with a certain amount of articles (powder) 105 filled in the bag 104 by the article filling device. It should be noted that the article 105 inside the bag is tightly tightened by deaerating the air contained in the article on the article filling device side. Further, in the bag 110 containing the article, a considerable amount of air A remains from the upper surface of the inner article 105 to the mouth of the bag.

In the residual air elimination device shown in FIG. 5, the air cylinders 102, 102 are extended while the article bag 110 is positioned between the pressing devices 101, 101, so that the spatula plates 103 are extended. , 103 are moved downward as indicated by chain lines 103 ', 103', respectively, and the spatula plates 103, 103 press the upper part of the bag 104 to remove residual air A in the bag 104 from the bag opening to the outside. Can be eliminated.

In another conventional residual air elimination device shown in FIG. 7, a roller 203 is used instead of the spatula plate 103 of FIG. 5, and the roller 203 is rocked up and down by an air cylinder 202. The pair of left and right pressing devices 201, 201 thus configured is provided. The pressing devices 201, 201 in FIG. 7 also operate in the same manner as in FIG. 5, so that the residual air A in the bag 110 containing articles can be removed to the outside.

[0007]

[Problems to be solved by the device]

 By the way, when the article (powder) 105 in the bag 104 is filled in the bag by the article filling device, the upper surface 105a of the article in the bag becomes irregular (not evenly convex from the center of the bag). Sometimes. For example, as shown in FIG. 6, a partial bulging portion 105b may be formed on a part of the upper surface of the in-bag article.

However, in the conventional residual air elimination device shown in FIG. 5, since the spatula plate 103 for pressing is hard, the lower surface of the spatula plate 103 is an upper surface 105a ( (Because it has been degassed, it is hard) and does not fully adapt to the shape of the spatula, and there is a gap between the bottom surface of the spatula plate (the inner surface of the bag) and the top surface of the article. Will remain. In particular, when the upper surface 105a of the article in the bag has a partial bulging portion 105b as shown in FIG. 6, the spatula plate 103 is blocked by the bulging portion 105b and cannot move downward any further. However, there is a problem in that a considerably large space Aa can be formed between the inner surface of the bag and the upper surface of the article (the amount of air remaining without being removed increases).

Also in the conventional residual air elimination device shown in FIG. 7, since the roller 203 for pressing the outer surface of the bag is hard, it is difficult for the roller 203 to adapt to the upper surface of the article. Similarly, there is a problem that the amount of air that remains in the bag without being removed increases.

In view of the problems of the conventional residual air elimination device described above, the present invention proposes a residual air elimination device in a bag that can further reduce the amount of residual air remaining in the bag. It is the purpose.

[0011]

[Means for Solving the Problems]

 The present invention is an article in which an article such as powder or granules is filled in the bag and the upper part of the bag is opened. In the residual air elimination device in the bag for pushing the residual air in the bag to the outside by pressing toward the upper surface of the bag, each pressing device includes a pressing member that is pressed against the outer surface of the bag, and the pressing member. The pressing member is characterized in that the pressing member is formed of a tube that hermetically seals the inside and the surface of which is elastically deformable in accordance with the resistance of the pressed object.

[0012]

[Action]

 In the residual air elimination device of the present invention, with the bag containing the article located between the pair of left and right pressing devices, each pressing device presses each pressing member from the outer side of the bag toward the upper surface of the article in the bag. The inner surface of the bag is pressed against the upper surface of the article, and the residual air in the bag is removed to the outside. Further, since each pressing member is formed of an elastically deformable tube, when the outer surface of the pressing member collides with the object to be pressed (the upper surface of the article through the bag), the surface of the tube will be the product inside the bag. The tube surface adapts along the upper surface and the portion of the tube surface corresponding to the resistance of the pressed object is elastically deformed inward.

[0013]

[Effect of the device]

 Therefore, according to the residual air elimination device of the present invention, the tube of the pressing member elastically deforms along the upper surface of the article in the bag during the operation of eliminating the residual air in the bag, so that the inner surface of the bag adheres to the upper surface of the article. The area can be increased, which can improve the efficiency of removing residual air in the bag. In particular, even if the top surface of the article in the bag has irregularities, the tube of the pressing member conforms to the shape of the top surface of the article, and the residual air in the bag can be effectively removed.

[0014]

【Example】

 An embodiment of the present invention will be described with reference to FIG. 1 to FIG. 4. The residual air elimination device of the embodiment shown in FIG. 1 has two left and right outer sides of the bag 10 containing articles at the residual air elimination work position. It comprises a pair of left and right pressing devices 1, 1 for pressing the vicinity of the shoulder (the upper surface of the article) of the bag 10 containing the article from the position.

The bag 10 containing an article is in a state in which a bag 4 is filled with a certain amount of an article (for example, powder such as milk powder) 5 in an article filling device in the previous step (not shown) and the upper opening is opened. Then, it is carried on the conveyor 11 and conveyed to the residual air elimination work position. The article 5 in the article-containing bag 10 is considerably tightly tightened because the air contained in the article is already deaerated on the article filling device side.

The pair of left and right pressing devices 1, 1 are respectively mounted on the stands 6, 6 having a predetermined height, and the pressing member 3 is pressed from the outside of the bag 10 containing the article to the outer surface of the bag, and the pressing member 3. And an operating device 2 for operating the forward / backward movement of the device 3.

The stand 6 has an outer cylinder 61 located on the lower side, an inner cylinder 62 located on the upper side, and a mounting base 63 provided on the upper end of the inner cylinder 62. The height of the mounting base 63 can be adjusted by expanding and contracting the mounting base 63. The inner cylinder 62 is fixed to the outer cylinder 61 with tightening bolts 64 after the expansion and contraction adjustment.

An air cylinder is adopted as the operating device 2 in this embodiment, and the operating device 2 is referred to as an air cylinder in the following description. The rear end of the air cylinder 2 is pivotally attached to the mounting base 63, and the intermediate portion is supported by the angle adjusting bolt 65. The air cylinder 2 can adjust the inclination angle (that is, the advancing / retreating direction of the pressing member 3) by the angle adjusting bolt 65. Incidentally, the advancing / retreating direction of the air cylinder 2 is set such that the pressing member 3 is directed substantially to the center position of the article upper surface 5a in the article-containing bag 10 at the residual air elimination work position.

The pressing member 3 is attached to the tip of the air cylinder 2. The pressing member 3 is constructed by attaching a tube 31 having a semi-circular cross section to the front surface of a pedestal 32 made of an elongated plate (having a length of 600 to 700 mm and a width of 70 to 150 mm). The tube 31 has a bottom surface portion 31a sandwiched between and supported by a core metal 33 and a pedestal 32 provided in the tube.

The tube 31 is made of rubber and has a thickness of about 1 mm, and is formed in a sealed state. The tube 31 has a length slightly longer than the width of the bag 4 (about 600 to 700 mm), the width of the bottom surface portion 31a is about 70 to 150 mm, and the forward protruding width is about 40 to 100 mm. . The pressing member 3 is formed in a gentle arc shape in which the central portion is recessed as shown in FIG. 2 in accordance with the convex outer surface of the bag 10 containing the article in the circumferential direction. There is.

Further, as shown in FIG. 2, the pressing member 3 is elastically supported by the belts 34 and 34 at two positions near both ends in the length direction, and the pressing member 3 is pressed by the resistance force of the other side to be pressed. The whole can swing a little.

The tube 31 of the pressing member 3 is provided with a nozzle 35 for blowing air, and a constant pressure (for example, 0.1) is constantly applied to the nozzle 35 from the compressed air source via the pressure reducing valve 7 with a check valve. Air of about 0.2 Kg / cm ² ) is supplied so that the inside of the tube 31 is always maintained at a constant pressure.

In the embodiments of FIGS. 1 to 4, reference numeral 12 is a guide conveyor for guiding the upper side position of the bag 10 containing articles, 13 is a leveler roller for keeping the upper height of the bag 10 containing articles constant. Reference numeral 14 is an electromagnetic switching valve for the air cylinders 2, 2, and 15 is a guide plate for guiding the bag 10 containing articles from both left and right sides.

The operation of the residual air removing apparatus of this embodiment will be described. On the side of the article filling apparatus, the article-containing bag 10 filled with a certain amount of articles 5 is placed on the conveyor 11 and conveyed, and the residual air eliminating work position is set. It is stopped by (state of Figure 1). When the bag 10 containing articles stops at a predetermined position, it is detected by, for example, a sensor, and the electromagnetic switching valve 14 is operated by the signal from the sensor to simultaneously extend the air cylinders 2, 2. Then, as shown in FIG. 3, the pressing members 3, 3 on each side move forward from the outside of the bag 10 containing the articles toward the vicinity of the central portion of the article upper surface 5a in the bag, and the tubes of the pressing members 3, 3 are pushed. The outer surface of the bag is pressed by the 31, 31. At that time, each tube 31, 31 is appropriately elastically deformed according to the resistance force on the side of the bag 10 containing the article (in particular, the upper surface 5a of the article inside), and the surface of the tube 31 adapts along the article upper surface 5a. As a result, the inner surface of the bag 4 is brought into close contact with the article upper surface 5a over a wide range. Therefore, the residual air A (see FIG. 1) originally present in the bag 10 containing the article can be largely removed from the upper opening of the bag. At this time, the upper portions of the bag are tucked upward by the leveler rollers 13 and 13 to act to join the upper side of the bag 4 from the left and right. The expanded air cylinders 2, 2 are contracted after a predetermined timer, and the work of removing residual air in the bag is completed. Then, the bag 10 containing the articles for which the residual air elimination work has been completed is carried on the conveyor 11 and sent to the next process (opening sealing process) side.

On the side of the article filling device, when the bag 5 is filled with the article 5, for example, a partial bulge 5b may occur on the article upper surface 5a as shown in FIG. Even when the upper surface 5a of the article in the bag is uneven, the surface of the tube 31 is elastically deformed along the shape of the upper surface of the article when pressed by the pressing member 3, and the residual air removal efficiency can be improved. it can.

[Brief description of drawings]

FIG. 1 is a side view of a residual air elimination device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an explanatory view of the operation of the residual air elimination device of FIG.

FIG. 4 is a diagram for explaining another operation of the residual air elimination device of FIG.

FIG. 5 is a schematic side view of a conventional residual air elimination device.

FIG. 6 is an explanatory view of the operation of FIG.

FIG. 7 is a schematic side view of another conventional residual air elimination device.

[Explanation of symbols]

1 is a pressing device, 2 is an operating device (air cylinder), 3 is a pressing member, 4 is a bag, 5 is an article (powder), 5a is an article top surface, 10
Is a bag containing articles, 11 is a conveyor, and 31 is a tube.

Front page continuation (72) Inventor Nakayama Ichigo 249 Snow Brand Company House, Bekkai Tokiwacho, Betsukai-cho, Notsuke-gun, Hokkaido (72) Inventor Hiroaki Kobayashi 249 Snowboard Company House, Bekkai-cho, Bekkai-cho, Notsuke-gun, Hokkaido (72) Inventor Kenji Homma, Hokkaido 249 Yukishiki-cho, Betsukai-cho, Betsukai-machi, Notsuke-gun (72) Fumio Shishido, Inventor Fumio Shishido 7 No. 7 Betsukai, Tsutsumai-cho, Betsukai-cho, Notsuke-gun (72) Ryoji Machida 1067 Suwa, Takatsu-ku, Kawasaki-shi, Kanagawa

Claims (1)

[Scope of utility model registration request] 1. A bag (4) filled with articles (5) such as powder and granules, and the upper part of the bag (10) with articles opened is provided with a pair of left and right pressing devices (1, 1) is a device for eliminating residual air in a bag, which is configured to push the residual air in the bag to the outside by pressing the bag from the outer facing position of the bag toward the upper surface of the article (5) in the bag. Each of the pressing devices (1, 1) is a bag
A pressing member (3) to be pressed against the outer surface of (4) and an operating device (2) for moving the pressing member (3) forward and backward are provided, and the pressing member (3) seals the inside and A tube whose surface can be elastically deformed according to the resistance of the object to be pressed.
A device for eliminating residual air in a bag formed by (31).