JPS61178807A - Continuous filling cylindrical bag making device for powdered body - 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 (Industrial Field of Application) The present invention relates to a continuous filling cylindrical bag making device for continuously filling powder or fine powder into a whole cylindrical bag and making bags continuously. 0 (Prior Art) The present applicant has previously developed a cylindrical bag-making device for continuously filling powder and granules (Japanese Patent Publication No. 1983-715), but this device temporarily stops feeding powder. At the same time, by providing a temporary pressing and heat sealing member for horizontally sealing the cylindrical bag immediately below the cylindrical wall that forms the entire cylindrical bag, a predetermined amount of powder to be packaged from the weighing machine can be removed. Most of the powder is received within the cylindrical wall so that the powder can be transferred in a stable state, and the cylindrical bag at the core is also laterally sealed. However, as shown in Figure 7, the temporary stop pressing and heat sealing member in the device is simply formed between elastic bodies such as rubber on one side and metal on the other. Since it is only formed by the heating plate 31, the receiving surface 32 of the elastic body I that receives the pressure of the metal heating plate 31 (particularly the portion that abuts the upper and lower nip portions 33 of the metal heating plate 31) is elastic. Due to the elasticity of the body, it curves into an arc shape as shown in Figure 8, and does not conform accurately to the shape of the pressing surface 33 of the metal heating plate 31. As a result, the sealed end portions between the bag parts cannot be reliably and neatly sealed. I feel so angry.

(Purpose) The present invention is capable of preventing a predetermined amount of powder to be packaged from flying up from a weighing machine and performing packaging in a stable state, and also provides a seal between each cylindrical bag that is continuously manufactured. To provide a continuous powder filling cylindrical bag making device capable of ensuring reliable and clean end sealing.

(Structure) 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. (wrapping material), and this band 1 is used as a guide roller 2 and a tension reno 4.
-3, the gap 7 formed between the cylindrical wall body 5 located below and the guide member 6 provided on the outer periphery of the guide roller 4 etc. is gradually formed into a cylindrical shape in the direction of the arrow X. Drive through. In this gap 7, both end edges of the strip 1 are overlapped with each other, and when it leaves this gap 7, a complete cylindrical shape is formed. At this time, in order to ensure that both side edge portions of the strip 1 that have passed through the gap 7 are always overlapped with uniform dimensions, the guide member 6 is placed on the strip 1. 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 the lead member 9
You may use an alternative. Reference numeral 10 denotes a vertical heat sealing member, which has overlapping portions 11 of both side edges of the cylindrical band 1.
The overlapping part 11 may be in the shape of a palm or an envelope, and the vertical heat sealing member 10 may be of a roll type. . 12, 12' are this vertical heat sealing member 10
While heat-sealing the overlapping portion 11 (with cooling in some cases), the lower part of the cylindrical bag 8 to be formed is pressed and heat-sealed from the front and back surfaces, and the bag 8 is stretched to the required length. A pair of horizontal heat-sealing members that can be freely driven to be moved downward, and each of the pair of horizontal heat-sealing members can move forward to close, lower, retreat to open, and rise from the front and back sides of the cylindrical bag body 8. It is connected to a known crank mechanism 13 for associated operations. 14 is synchronously connected to the horizontal heat sealing members 12, 12' so as to cut from the center of the widthwise sealed portion 8' of the cylindrical bag 8 heat sealed by the horizontal heat sealing members 12, 12'. This cutting member 14 is a cutting member disposed below the heat sealing member so as to be driven by the heat sealing member.One side of the cutting member 14 consists of a fixed blade 14a, and the other side is movably set up using a telekinetic force.
4b consisting of these blades 14a, 14
b is always open, and these blades 14a + 14t)
The widthwise sealed portion 8't of the cylindrical bag 8 is transferred downward between the two, 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'i is appropriately driven by a known drive means to cut from the center.

15 is, for example, medicine, powder of sugar, etc., fine powder filler 1
6 is housed in the hopper, and a well-known rotary set weighing machine 17 is connected to the lower outlet of this conch/arm for taking out an appropriate amount of the filled gold. A shoe 18 is provided at the outlet of this weighing machine 17.
The tip of the filler 16 is inserted inside the cylindrical wall 5, and the filling 16 is periodically taken out in a constant, appropriate amount by the rotation of the rotary set weighing machine 17 (taken out 4 times per rotation). The liquid passes completely through the cylindrical wall 5 and is charged into the cylindrical bag 8.

19, 19' are the pair of horizontal heat sealing members 12,
A pair of temporary pressing and heat sealing members are provided above 1'2' and directly below the cylindrical wall 5, and the members 19 are made of an elastic material such as synthetic rubber or silicone rubber,
The member 19' is formed with a metal heating plate,
Each member 19, 19' is the horizontal heat sealing member 12.
, 17 (same as the width direction sealing portion 8') is attached to the horizontal heat sealing member 1.
2 and 12', well-known drive mechanisms 19a and 19'a, such as air cylinders, open and close the cylindrical bag 80 horizontally from both the front and back sides (forward and backward movements), respectively, and clamp it. This is to temporarily stop the filling material 16 being charged and to heat-seal the portion 8'. Reference numeral 20 designates a compact box for housing the packaging bag 8'. 21 is the pressing surface of the metal heating plate 19'; 22 and 22' are nip portions having a predetermined width formed at the upper and lower parts of the pressing surface 21; 23 is the receiving surface of the elastic body 19; 24 is the receiving surface. A thin metal wire mesh made of fine metal wire coated with soft iron or other suitable flexible metal wire with a wire diameter of 0.1 to 0.3 mm, for example, about 50 to 100 mm.
O25 is formed on the fine wire mesh of the mesh, and 26 is a spring set screw.For convenience, in this embodiment, one cylindrical bag is used, but multiple bags may be used.

(Function) First, as shown in FIG.
A pair of temporary pressing and heat sealing members 1 while forming
9, 19' and a pair of horizontal heat sealing members 12, 1
As shown in Figure 4, a pair of temporary stop pressing and heat sealing members 19 and 19'i are first operated in the direction of the arrows to achieve this temporary stop. At the same time, the empty cylindrical bag 8 is sandwiched and pressed and heat-sealed by the pressing and heat cooling members 19 and 19', and at the same time, most of the filling 16t-1, which is periodically taken out from the weighing machine 17, is inside the cylindrical wall 5. In this state, the temporary stop pressing and heat sealing members 19 and 19' are used to temporarily stop the process. At this time, the horizontal heat-sealing members 12, 12' also operate at a predetermined position below to press and clamp the entire cylindrical bag 8 at a predetermined position.

Next, as shown in FIG. 4C, the temporary pressing/heat sealing members 19 and 19"i 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"i are moved downward, and the fourth As shown in the figure, the cylindrical bag 8 is moved in the downward direction of the arrow by a required length (-bag). The horizontal heat sealing members 12, 1 are transferred to a predetermined position and momentarily removed.
The cutting member 14 interlocking with the cylindrical bag 8 is operated to cut the lowermost part of the cylindrical bag 8. In this case, the bag is empty and is not filled with the filler 16. In FIGS. 4-2, the temporary pressing and heat-sealing members 19 and 19' remain open. When the cutting operation of the cutting member 14 is completed, as shown in FIG. 4 E, the temporary pressing and heat sealing member 19. Stop pressing and heat sealing member 19
, 19' clamp and press the cylindrical bag body 8, and at the same time, the filler 16 is supplied into the cylindrical wall body 5 and is temporarily stopped by the temporary pressing and heat sealing members 19, 19'. At this time, the horizontal heat sealing members 12, 12' and the cut member 14f1 have already returned to their original positions, and the horizontal heat sealing members 12
, 12'i presses and clamps a predetermined portion of the cylindrical bag 8.

Next, as shown in FIG. 4, the temporary pressing/heat sealing members 19, 19'') H 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. While heat-sealing the width direction of the cylindrical bag 8 (in some cases, the sealing effect may be improved by cooling), the cylindrical bag 8 is moved downward by a required length (-bag length). The moment the bag is moved to the position shown in FIG.
'' 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, the filler 16 is filled. A packaging bag body 8' having the following properties is obtained.

(Effects) □ According to the present invention, a predetermined horizontal opening/closing movement is performed directly below the cylindrical wall 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 and heat-sealing member is installed that clamps and presses all the predetermined parts of the cylindrical bag to be partially sealed (preliminary sealing), and prevents the predetermined amount of powder to be packed from the weighing machine from flying up. In addition, one side of the temporary pressing and heat sealing member is made of an all-metal heating plate, the other is made of an elastic body, and the seal receiving surface of the elastic body is used. is covered with a fine metal wire gauze, so when the cylindrical bag is clamped and pressed, the deformation of the seal receiving surface of the elastic body by the pressing surface of the metal heating plate is small, and as a result, the above-mentioned The upper and lower nips on the pressing surface of the metal heating plate are well-controlled, the sealing end a located on the cylindrical bag side is reliably sealed, the sealing condition with the sealing nip clearly exposed is ensured, and the packaging bag is clean. Moreover, the fine metal wire mesh made of Ii has good heat conductivity, so efficient heat sealing can be achieved, and secondary sealing by the next horizontal heat sealing member ( This seal) has the advantage of being easy to apply.

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]

FIG. 1 is a partially cutaway side view showing an embodiment of the device of the present invention;
Figure 2 is a front view of the same, Figure 3 is a perspective view showing the main parts, and Figure 4 is a front view of the same.
Figures A to A are explanatory diagrams showing the operating state of the same device, Figure 5 is an enlarged side view of the temporary pressing and heat sealing member, Figure 6 is a partially enlarged sectional view showing the clamping and pressing state, and Figure 7. 8 is an enlarged side view of a conventional temporary stop pressing and heat sealing member, and FIG. 8 is a partially enlarged sectional view showing the same clamping and pressing state. DESCRIPTION OF SYMBOLS 1... Band body, 5... Cylindrical wall body, 6... Guide member, 7... Gap, 8... Cylindrical bag body, 8'... Width direction seal part, 8' ...Packaging bag body, 9...Lead member, 1o...Vertical heat sealing member, 11...Overlapping portion, 12, 12'...Horizontal heat sealing member, 13...
Crank mechanism, 14...Cut member, 15...Hotno P=, 16...Filling material, 17...Rotary complete weighing machine, 19, 19'... Temporary stop pressing and heat sealing member, 19 a, 19'a... Drive mechanism, processing...
Box body, 21... Pressing surface, 22, 22'... Nip part, Otsu... Receiving surface, Sae... Fine metal wire mesh, 5
...Spring for wire mesh tensioning, 26...Spring set screw. Figure 2 2υ Figure 4 Figure 4 Figure 4 Figure 8

Claims (1)

[Claims] A hopper containing a filling material, an appropriate amount extraction means connected to an outlet of the hopper for intermittently taking out a predetermined amount of the filling material in the hopper, and a cylindrical wall body and a guide member provided on the outer periphery of the hopper. A band is arranged so that it passes through a gap formed between the two 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 to form a cylindrical shape. vertical heat sealing means provided to form a bag;
While pressing and heat-sealing a predetermined lower position of the cylindrical bag formed by this vertical heat-sealing means by a drive mechanism that performs predetermined opening, closing, and vertical movements, the bag is moved downward by a required length. a pair of horizontal heat sealing means provided to allow the transfer, and located directly under a cylindrical wall between the horizontal heat sealing means and the vertical heat sealing means, and press heat sealing by the horizontal heat sealing means. When the horizontal heat-sealing means is in the open state, the area to be held is sandwiched and pressed from both sides by a drive mechanism that performs horizontal opening and closing movements, and when the horizontal heat-sealing means is in the closed state, the pressed state is maintained. A continuous powder filling cylindrical bag-making device equipped with a pair of temporary stop pressing and heat sealing means that are opened, one of the temporary stop pressing and heat sealing means being an elastic body, and a seal receiver of the elastic body. A cylindrical bag-making device for continuous filling of powder, characterized in that one side of the bag is covered with a fine-mesh wire gauze made of fine metal wire, and the other side is a metal heating plate.