JPS5882829A - Automatic sealing device for injection mouth of heavy packing bag - 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 a device for automatically thermally sealing the powder inlet of an internal valve double-bottomed double-sided packaging for filling powder and granules such as wheat flour. be. In the present invention, heavy packaging bags refer to a wide range of bags such as paper bags, woven bags, and plastic molded bags. Paper bags with internal valves are widely used, in which powder or granules are injected through the mouth and the valve opening is closed by the pressure of the contents filled in the bag. However, when the bag is transported or stored, There are problems such as fluid leaking out of the bag through the inlet. Therefore, the inlet needs to be tightly sealed. At Jubei, sealing each inlet was a complicated manual process. However, since it is necessary to perform a large amount of very complicated work, for example,
An automatic banding machine like the one disclosed in No. 49 has been threatened with opening. ◎This type of automatic machine is applied to square-bottom wrapping, and the protruding outer valve opening is not bent along the L& surface of the bag. It was not only extremely inconvenient, but also the structure of the device itself was complicated. When a paper bag is pressed, the contents may squirt out from the valve opening due to uneven distribution of the contents.

Therefore, the present invention is applied to an inner-valve type double-bottomed heavy wrapping paper bag that eliminates the defects of such conventional inner-valve type bottom-stick bags,
It does not cause any problems such as the contents gushing out when the injection port is sealed.
It is an object of the present invention to provide an automatic sealing device for an injection port of a heavy-duty paper bag that can reliably and strictly automatically seal a powder injection port. means for transferring a heavy-duty paper bag while elastically clamping a first opposing side surface having an injection port from both sides, and a second opposing side surface having a large area of the paper bag elastically clamping the paper bag from both sides while regulating the internal pressure of the paper bag. The first and second
A means for heat-pressing the free portions of the seven sealing pieces covering the injection port of the paper bag which is being elastically clamped and pressed from both sides and being shaped and pressed, and a cooling means for forcibly cooling the heat-press bonded paper bag S. To provide an automatic sealing device for a filling port of a heavy-duty wrapping paper bag.

Hereinafter, the injection port sealing device for a heavy-duty paper bag according to the present invention will be described in detail with reference to preferred embodiments shown in the drawings.
The structure of an internal valve type double-bottomed paper bag 1 to which this is applied is shown in Fig. 1. ◎This paper bag 1 has both bottoms (first side) sealed and has a valve (not shown) on one bottom as shown in the figure. ) is provided on the bottom surface and covered with a sealing piece 2 so as to cover the valve opening, and the free part s3 constitutes a powder injection port 5 between it and the bottom s4 of the paper bag.

The sealing device of the present invention is such that the bottom 4 of the paper bag 1 and the sealing piece 2 are separated from each other.
In the sealing device of the present invention, a paper bag l having the structure shown in Fig. The apparatus of the present invention seals a paper bag l as shown in FIG.
ml clamping and transferring means that clamps the opposing side surface (hereinafter referred to as the first side surface) on the side having the injection port portion 5 (hereinafter referred to as the first side surface) from both sides, and the large-area opposite side surface 6 (hereinafter referred to as the second side surface) of the rectangular parallelepiped paper bag 1.
and second holding and transferring means for holding the object from both sides. First, the first clamping means will be explained. As shown in the plan view of Fig. 182, the first clamping and transferring means is mounted on the horizontal bar 12. As a device for holding the side surface of the paper bag on the side of the injection port 5, a holding plate 17 is attached to the scattering bracket 14 fixed to the horizontal bar 12 so that its position can be adjusted using a tightening screw 15 and a groove 16. Heating means 18 and cooling means 19 are arranged on horizontal bar 1.
The heating plate 22 is elastically attached via a spring 21 to a bracket 20 attached to the heating plate 2. The cooling means 19 includes a placket 23 attached to the horizontal bar 12.
Like the upper number ζ, it consists of a cooling plate 25 which is elastically attached via springs 24, and the side of the paper bag where the inlet is located is supported by the plates 17, 22 and 25, and the inlet 5 is closed as described below. The opposite 11 surface of the first side having the inlet 5 of the paper bag l to be heat-pressed is mounted on a bracket 26 mounted on the horizontal bar 13 by a tightening screw 27 and a groove 28, and the position can be adjusted by a bracket spring 29. 0 supported by elastically supported clamping plates 30
A roller carrier may be arranged instead of the clamping plate 30.

The positions of the clamping plates 17 and 30 can be adjusted depending on the size of the bag, the degree of compression, the degree of filling, etc., and the heating and cooling means 18 and 19 can also be adapted by means of screws 31 to the positions of the clamping plates.

The second clamping and transferring means is disposed between the first clamping and transferring means so as to surround the paper bag l, and the inner and downward sides of the second opposite crystal side 'r116 of the paper bag 1 are attached between the horizontal bars lλ13. 9't'
These are supported by the motor 3
3 and is driven by a chain/35 stretched over the nupket 34 (see Figure 183) 0 Of course, this side can be supported by a belt, but it is difficult to evenly fill the paper bag. , from the viewpoint of adjusting the internal pressure, it is preferable to use the support T4 at 1-2. The inner upper surface of the second side surface 6 of the paper bag laJ is connected to the motor 37 on the stand 36.
It is held by a belt 39 stretched between pulleys 3s on a stand 36 which is rotationally driven by a belt 39. If the entire upper and lower surfaces of a large area of the paper bag are pressed, abnormal internal pressure may be generated, and as a result, powder or granules may be ejected from the valve opening of the paper bag or the paper bag itself may burst. As shown in Figure 4, avoid pressing the entire large area surface. In the example shown in FIG. 4, the belt 39 is composed of three belts, and a gap is provided between these belts so that the above-mentioned action is similar to that of the belt 39. The configuration is not limited to this example, but in short, it is important to configure the configuration so that the entire large area surface is not pressed. And chain 3
5 and the belt 39 are driven synchronously and are constructed so as not to apply abnormal external force to the paper bag. As shown in FIG. Can be attached freely,
The stand 42 is a horizontal bar 4 stretched between the columns 12 and 13 by a bar 43.
It is fixed to 4. Therefore, the belt 39 elastically supports the paper bag by the action of the spring 41, and does not clamp the paper bag with an abnormal pressing force. In addition, the dimensions of the paper bag, the degree of filling,
A threaded rod 4 is attached to the stand 42 so that the pressure can be adjusted depending on the degree of pressure.
5 may be attached so that the height of the belt 39 can be adjusted by the handle 47 using, for example, an engaging mechanism with the pinion 46.Next, the operation of the paper bag inlet sealing device according to the present invention will be briefly explained. Explanation C The paper bag 1 filled with powder or granules is placed on the roller carrier 32 with the free portion 3 of the sealing piece 2 on the rear side when viewed in the direction of travel, and the first side of the paper bag is placed on the clamping plates 17 and 30. The second side of the paper bag is elastically held and transferred by the roller carrier 32 and the belt 39. When the paper bag is held by these holding means, the paper bag is transferred to the first side.
The paper bag is elastically supported by a spring 29 on the side, and elastically supported by a belt 39 elastically supported by a spring 41 on the i12 side with an appropriate compression area, so that the paper bag can be shaped into a desired shape. At the same time, the pressure is regulated so that abnormal pressure does not occur, and failures such as leakage of the filling from the paper bag or bursting of the paper bag do not occur. Furthermore, since the first and second clamping and transferring means are adjustable as described above to suit the dimensions of the paper bag, even if the dimensions of the paper bag change, the paper bag will not become abnormal.

The paper bag that has been shaped and pressed with an appropriate pressing force and transferred is pressed against the heating plate 22 of the heating means 18, and the free part 3 of the sealing piece 2 is heated and pressed against the bottom @4. Both are pressure-bonded with a heat-sealing adhesive applied to at least one of them.

Since the paper bag is shaped and pressed by the first and second clamping and transferring means and tightly pressed against the clamping plates 17 and 30, it is also tightly pressed against the heating plate 22 which is aligned with the clamping plate 17. The heat sealing of the injection port 5 is automatically and reliably performed. 0 After the heat sealing, the sealed portion is immediately pressed against the cooling plate 25 of the cooling means 19 and cooled, and the paper bag is completely sealed and sent out. come.

As is clear from the above explanation, the paper bag injection port sealing device of the present invention elastically suppresses and supports the paper bag from all four sides and performs heat sealing, and has an effect not found in conventional devices. be. Moreover, the above-mentioned part shows only an example of the present invention, and it goes without saying that various changes can be made within the scope of the present invention.

[Brief explanation of drawings]

Figure 511 is a partial perspective view of a paper bag used in the apparatus of the present invention, Figure 2 is a partial plan view of the automatic sealing device for the injection port of a heavy packaging bag of the present invention, Figure fIia is a side view of the same part, and Figure 1114 is an end face of the same part. It is a diagram. Explanation of symbols 1.-Paper bag, 2.-Sealing piece, 3.. Free part, 4..
Bottom, 5... Inlet, 6... Side, 10.11-.
・Column, 12.13゜44-・Horizontal bar, 14.20.2 2
6...Bracket, 15, 27.31-...Screw, 1
6.28-groove, 17.30. Holding plate, 18--Heating means, 19... Cooling means, 21
゜24.29.41-- Spring, 22... Heating plate, 2
5-cooling plate, 32--one carrier, 33.37-motor, 34--sprocket, 35--chain, 3
6.42--stand, 38--pulley, 39--belt, 4
0.43 --- Rod, 45-- Threaded rod, 46-- Binion, 47-- Handle 2 Figure 4

Claims (1)

[Scope of Claims] A means for transporting a nearly rectangular parallelepiped heavy packaging bag filled with a material to be delivered while elastically holding it from both sides and having an injection port, and a large area of the bag. a means for elastically clamping and transporting the third meat side m from both sides while regulating the Shunai pressure; 4111 and 4111 include thermocompression bonding means for thermocompression bonding the free part of the sealing piece covering the injection port portion of the Shun transferred while being regulated; and a cooling means for forcibly cooling the thermocompression bonded portion of the Shun. Automatic sealing device for heavy packaging bags