JPH0525722B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) A continuous powder filling cylindrical bag-making device of the present invention, which continuously fills powder or fine powder into a cylindrical bag and makes bags. It is related to.

(Prior Art) The present applicant had previously developed a continuous filling cylindrical bag-making device for powder and granules (Japanese Patent Publication No. 715-1983).
This weighing machine is equipped with a temporary pressing/heat sealing member for temporarily stopping the powder and laterally sealing the cylindrical bag directly below the cylindrical wall forming the cylindrical bag. Most of the predetermined amount of powder to be packaged is received inside the cylindrical wall, so that the powder can be transferred in a stable state, and the lateral side of the cylindrical bag in this part is The device also performs sealing to prevent powder from entering the lateral seal portion, but the temporary pressing and heat sealing member in the above device is simply made of an elastic material such as rubber on one side as shown in Figure 7. Since the metal heating plate 30 was formed of one body and the other was only formed of a metal heating plate 31, the metal heating plate 3
The receiving surface 32 of the elastic body 30 (particularly the portion that abuts the upper and lower edge portions 33 of the metal heating plate 31) that receives the pressure of 1 is bent into an arc shape as shown in FIG. The shape of the pressing surface 33 did not fit accurately, and as a result, there was a problem that the sealed end portions between the respective cylindrical bags could not be reliably and cleanly sealed.

(Objective) The present invention solves the above problems, prevents a predetermined amount of powder to be packaged from flying up from a weighing machine, allows packaging to be carried out in a stable state, and enables continuous production. Continuously filled cylindrical material with powder that allows for reliable and clean sealing at the seal end between each cylindrical bag, accurate heat sealing in a short time, and highly efficient sealing work. We are in providing bag equipment.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a hopper storing a filling material and an outlet of the hopper for intermittently taking out a predetermined amount of the filling material in the hopper. The material is arranged so that it passes through the gap formed between the appropriate amount take-out machine connected to the cylinder top wall and the guide member provided on the outer periphery of the cylinder, and is transferred downward while overlapping both side edges. A vertical heat-sealing member provided to form a cylindrical bag by heat-sealing the overlapping portions of both side edges of the band, and a cylinder formed by the vertical heat-sealing member. A pair of horizontal heat-sealing members are provided to transfer the bag downward by a required length while pressing and heat-sealing a predetermined lower position of the bag by a drive mechanism that performs predetermined opening, closing, and vertical movements. and a portion located directly below the cylindrical wall between the horizontal heat sealing member and the vertical heat sealing member, and which is pressed and heat sealed by the horizontal heat sealing member when the horizontal heat sealing member is in an open state. , a pair of temporary pressing and heat sealing members that sandwich and press heat seal from both sides by a drive mechanism that performs a predetermined horizontal opening/closing movement, and release the pressed state when the horizontal heat sealing member is in the closed state. A continuous powder filling cylindrical bag making device comprising: one of the temporary stop pressing and heat sealing members being an elastic body, and a seal receiving surface of the elastic body being covered with a fine metal wire gauze. At the same time, the other is a metal heating plate having a pressing surface.

(Embodiment) Figures 1 to 6 show an embodiment of the present invention, in which 1 is a band of, for example, plastic film or paper, which is wound and rotatably disposed as appropriate. (packaging material), and this band 1 includes a guide roller 2, a tension lever 3, and a guide roller 4.
A space formed between the cylindrical wall body 5 located below and the guide member 6 provided on the outer periphery of the wall body 5
7 in the direction of arrow X, gradually forming a cylindrical shape. During this time, both end edges of the band 1 are overlapped with each other at 7, and a complete cylindrical shape is formed when the strip 1 exits from 7. At this time, in order to ensure that both side edge portions of the strip 1 that have passed through 7 are always overlapped with each other with uniform dimensions, the strip 1 is placed on the guide member 6. A lead member 9 made of a relatively hard elastic material such as Teflon or the like is provided with its tip inserted and guided between both side edge portions. Note that a substitute for the lead member 9 may be used. Reference numeral 10 denotes a vertical heat-sealing member, which abuts against the overlapping portions 11 of both side edges of the cylindrical band 1 and electrically heats it to adhere this portion by heat-sealing. Note that the overlapping portion 11 may be in the shape of folded palms or in the form of an envelope paste, and the vertical heat sealing member 10 may be of a roll type.
12 and 12' are heated by pressing the lower position of the cylindrical bag 8 from the front and back surfaces while contacting and heat-sealing (sometimes cooling) the overlapping portion 11 with this vertical heat-sealing member 10. A pair of horizontal heat-sealing members are provided so as to be freely drivable so as to move the bag 8 downward by a required length while sealing. It is connected to a well-known crank mechanism 13 to perform related operations consisting of forward closing, lowering, retracting opening, and raising from the back side. 14 is connected to the horizontal heat-sealing members 12, 12' so as to cut the widthwise sealed portion 8' of the cylindrical bag 8 heat-sealed by the horizontal heat-sealing members 12, 12' from the center. This is a cut member disposed below the heat sealing member so as to be driven synchronously, and the cut member 14 is composed of a fixed blade 14a on one side and a movable blade 14b on the other side. There is. These blades 14a and 14b are always open, and between these blades 14a and 14b, the width direction seal portion 8' of the cylindrical bag 8 that is transferred downward is
At the moment when the cylindrical bag 8 is transferred by the required length by the crank mechanism 13, or while being transferred, one of the movable blades 14b is appropriately driven by a well-known driving means, so that the central portion is It is starting to cut from the beginning.

Reference numeral 15 denotes a hopper in which, for example, powders such as pharmaceuticals, sugar, etc., and finely powdered fillings 16 are stored, and a well-known rotary weighing machine 17 is connected to the lower outlet of this hopper to take out the appropriate amount of the fillings. There is. A chute 18 is provided at the outlet of this weighing machine 17. The tip of this chute 18 is inserted inside the cylindrical wall 5, and the filler 16 is periodically taken out in the required constant amount by the rotation of the rotary weighing machine 17 (taken out 4 times per rotation). ), passes through the cylindrical wall 5 and is charged into the cylindrical bag 8.

19, 19' are the pair of horizontal heat sealing members 1
2, 12', a pair of temporary pressing and heat-sealing members are provided at fixed positions directly below the cylindrical wall 5, and one member 19 is made of an elastic material such as synthetic rubber or silicone rubber. At the same time, the seal receiving surface 23 of the elastic body is covered with a thin wire mesh 24 made of fine metal wire.
The other member 19' is formed of a metal heating plate having a pressing surface 21. Each of the members 19, 19' presses and heat-seals the portion 8' (same as the width direction sealing portion 8') by the horizontal heat-sealing members 12, 12' by the operation of the horizontal heat-sealing members 12, 12'. In synchronization with this, a well-known drive mechanism 19a, 1 such as an air cylinder
9'a horizontally opens and closes the cylindrical bag 8 from both the front and back surfaces (forward and backward movements) to clamp and press it, temporarily stopping the filling material 16 to be charged and filling the bag body 8. The portion 8' is heat sealed. 20 is a box for storing the packaging bag 8''; 22 and 22' are edge portions of a predetermined width formed at the upper and lower parts of the pressing surface 21; 24 is a seal receiving surface of the elastic body 19; 23
It is a fine wire mesh made of fine metal wire coated with, for example, soft iron or other suitable flexible metal thin wire with a wire diameter of about 0.1 to 0.3 mm, and is formed into a fine wire mesh of about 50 to 100 meshes. . 25 is a wire mesh tensioning spring connected to both ends of the wire mesh 24;
The free end of the spring has a spring set screw 26
It is swingably attached to. When such a metal wire mesh 24 is used, when the cylindrical bag body 8 is heat-sealed by the pair of temporary pressing/heat sealing members 19, 19', the wire mesh 24 speeds up the heat transfer. Moreover, since the mesh is fine, heat transfer becomes uniform, and the seal portion of the cylindrical bag 8 is preheated from the seal receiving surface side by the heat of the wire mesh 24, so that accurate heat sealing can be achieved in a short time. In addition, since the fine metal wire mesh 24 is made of metal, it has high thermal conductivity depending on the thickness and type of the band (packaging material), such as plastic film or paper, which forms the cylindrical bag 8. The material and physical properties can be appropriately selected and used, such as those with hardness, hardness, low hardness, high hardness, low hardness, etc., and the range of use can be significantly expanded.

In addition, in this example, the upper cylindrical bag is
I explained using the real book, but you can also use many books.

(Function) First, as shown in FIG. It is set to the lower position by passing between the stop pressing/heat sealing members 19, 19' and between the pair of horizontal heat sealing members 12, 12', respectively. Next, as shown in FIG. At the same time as the bag body 8 is clamped, pressed and heat-sealed, the filling 1 is periodically taken out from the weighing machine 17.
6 is temporarily stopped by the above-mentioned temporary stop pressing and heat sealing members 19, 19' with most of the part inside the cylindrical wall body 5. At this time, the horizontal heat sealing member 1
2 and 12' also operate at a predetermined position below to press and hold a predetermined portion of the cylindrical bag body 8.

Next, as shown in FIG.
2 and 12' downward, and the cylindrical bag 8 is transferred by a required length (one bag) in the downward direction of the arrow as shown in FIG. 4D. The moment the cut member 14 is moved to a predetermined position, the cut member 14 interlocking with the horizontal heat seal members 12, 12' is activated to seal the cylindrical bag 8.
Cut the bottom part. In this case, the bag is empty and is not filled with the filler 16. This figure 4c,
In d, the temporary pressing and heat sealing member 1
9, 19' remain open. When the cutting operation of the cutting member 14 is finished, as shown in FIG.
is operated in the direction of the arrow in the same manner as in the case of FIG.
At the same time as the cylindrical bag body 8 clamps and presses the filler 9', the filling material 16 is supplied into the cylindrical wall body 5 and is temporarily stopped by the temporary stop pressing and heat sealing members 19, 19'. At this time, the horizontal heat sealing members 12, 1 have already been
2' and the cut member 14 return to their original positions, and the horizontal heat sealing members 12, 12' press and hold the cylindrical bag 8 at a predetermined location.

Next, as shown in FIG. 4, the temporary pressing and heat sealing members 19 and 19' are operated in the horizontal direction of the arrows to open them, and at the same time, the horizontal heat sealing members 12 and 12' are moved downward to close this cylinder. bag-like body 8
The cylindrical bag 8 is moved downward by a required length (one bag) while heat-sealing the width direction (cooling may improve the sealing effect). The moment the cut member 14 is moved to a predetermined position, the cut member 14 interlocks with the horizontal heat seal members 12, 12'.
is operated to cut this cylindrical bag body 8. That is, the bag 8'' is cut off. In this case as well, as shown in the figure, the bag 8'' is an empty bag that is not filled with the filler 16, but as the bag 8'' is operated continuously,
A packaging bag 8'' filled with the filler 16 is obtained.

The above is a general explanation of the operation for making the packaging bag body 8''.
9 and 19' are as shown in FIGS. 5 and 6, it is possible to ensure the sealing state of the sealed end between each cylindrical bag body manufactured in succession, and Clean and accurate sealing can be achieved in a short time, and the sealing work can be performed with high efficiency.

(Effects) According to the present invention, a predetermined horizontal opening/closing movement is performed directly below the cylindrical wall body in synchronization with the operation of the horizontal heat sealing member, and the horizontal heat sealing member presses the heat seal (main seal). A temporary pressing/heat sealing member is provided to clamp and press a predetermined portion of the cylindrical bag to perform a primary seal (preliminary seal).
In addition to preventing a predetermined amount of powder to be packaged from flying up from a weighing machine and allowing packaging to be performed in a stable state, one side of the temporary press heat sealing member is a metal heating plate; The other side is made of an elastic body, and the seal receiving surface of the elastic body is covered with a thin wire mesh made of thin metal wire. The degree of deformation of the seal receiving surface of the elastic body is small, and as a result, the upper and lower edges of the pressing surface of the metal heating plate are well-defined, and the seal end a located on the cylindrical bag side
Not only can the sealing be performed reliably and the sealing state with clearly visible seal edges be obtained, and a clean packaging bag can be obtained, the fine metal wire mesh has a fast heat transfer property, and the wire mesh is Because the mesh is fine, heat transfer is uniform, and the seal part of the cylindrical bag is preheated from the seal receiving surface side by the heat of the wire mesh heated by heat transfer.
Accurate heat sealing is possible in a short time, and
Sealing work can be performed with high efficiency. Also,
Since the fine metal wire mesh is made of metal,
Depending on the thickness and type of the band (packaging material), such as plastic film or paper, the material is strong and hard to break, and has high or low thermal conductivity, or has high or low hardness, etc. as appropriate. It is possible to select and use the materials and physical properties, etc., and the range of use can be significantly expanded.

The horizontal heat-sealing member in this embodiment may be a cooling sealing member, and the sealing effect may be enhanced by pressing and cooling the heat-sealed area with the temporary pressing and heat-sealing member.

[Brief explanation of drawings]

1 to 6 are diagrams showing an embodiment of the powder continuous filling cylindrical bag making device of the present invention, FIG. 1 is a partially cutaway side view of the same device, and FIG. 2 is the same as the above device. A front view of the device, FIG. 3 is a perspective view showing the main parts of the device, FIG. 4 is an explanatory diagram showing the operating state of the device, and FIG. FIG. 6 is a partially enlarged side view showing the same clamping and pressing state, FIG. 7 is an enlarged side view of the conventional temporary stop pressing and heat sealing member, and FIG. 8 is a partially enlarged side view showing the same clamping and pressing state. FIG. DESCRIPTION OF SYMBOLS 1... Band, 5... Cylindrical wall, 6... Guide member, 7... Between, 8... Cylindrical bag, 8'... Width direction seal portion, 8''... Packaging bag , 9...Lead member, 10...Vertical heat sealing member, 11...Overlapping portion, 12, 12'...Horizontal heat sealing member, 1
3...Crank mechanism, 14...Cut member, 15
... hopper, 16 ... filling, 17 ... rotary weighing machine, 19, 19' ... temporary stop pressing and heat sealing member, 19a, 19'a ... drive mechanism,
20... Box body, 21... Pressing surface, 22, 22'...
Edge portion, 23...Receiving surface, 24...Fine wire mesh made of fine metal wire, 25...Spring for tensioning wire mesh, 26
...Spring set screw.

Claims (1)

[Claims] 1. A hopper containing a filling material, an appropriate amount take-out machine connected to the outlet of the hopper in order to intermittently take out a predetermined amount of the filling material in the hopper, and a cylindrical wall body and a guide member provided on its outer periphery. The band is arranged so that it passes through the gap formed between the band and is transferred downward while overlapping both side edges of the band, and the overlapping portions of both side edges of this band are heat-sealed. A vertical heat-sealing member provided to form a cylindrical bag, and a drive mechanism that opens, closes, and moves up and down a predetermined position below the cylindrical bag formed by the vertical heat-sealing member. A pair of horizontal heat-sealing members are provided to move the bag downward by a required length while pressing and heat-sealing the bag, and a cylindrical wall is formed between the horizontal heat-sealing member and the vertical heat-sealing member. When the horizontal heat-sealing member is in the open state, the area located directly under the body that is pressed and heat-sealed by the horizontal heat-sealing member is opened in a predetermined horizontal direction.
Continuous filling of powder with a pair of temporary pressing and heat sealing members that pinch and press heat seal from both sides by a drive mechanism that performs a closing motion, and release the pressed state when the horizontal heat seal member is in the closed state. The cylindrical bag making device is a cylindrical bag making device, wherein one of the temporary pressing and heat sealing members is made of an elastic body, the seal receiving surface of the elastic body is covered with a fine wire gauze made of thin metal wire, and the other is made of a pressing surface. 1. A continuous powder filling cylindrical bag making device characterized by having a metal heating plate having a metal heating plate.