JP3859048B2 - Tube making device for bag making filling and packaging machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, a strip-like film continuously drawn from a roll film is formed into a tube through a tube making means, while a packaged object is carried into the tube film by a carry-in conveyor at equal intervals, and then each packaged product is The present invention relates to a film cylinder device for a bag-filling and packaging machine that seal-cuts the tube film between objects.
[0002]
[Problems to be solved by the invention]
The cylinder making device that shapes the film into a cylindrical shape has a cylindrical cross section, and when a flat film is shaped with the cylindrical tube making device, there is a law that the film is always introduced into the tube making device at a fixed inclination angle. Therefore, as shown in FIG. 12, for packaging of a package with a larger width, both side walls 1 of the tube-making apparatus are spread diagonally forward and laterally as indicated by an imaginary line 1a, and the package with a larger height. For the packaging, as shown in FIG. 13, means for pushing up the film pressing rod 2 of the cylinder making apparatus obliquely forward and upward as indicated by an imaginary line 2a is used.
[0003]
However, when the side plate 1 is displaced obliquely forward as shown in FIG. 12, the film pressing rod 2 is integrally displaced obliquely forward, and the guide angle of the film 3 to the cylinder making apparatus changes as indicated by a virtual line 98 in FIG. In order to detract from this, it is necessary to retreat the presser bar 2 alone, and in the same FIG. 13, even when the presser bar 2 protrudes obliquely forward in accordance with the change in the height of the package, the guide angle 98 of the film As a result, the frictional resistance of the film 3 with the presser bar 2a is increased, and on the contrary, when the presser bar is moved backward, the film is slackened.
[0004]
[Solution]
In view of this, the present invention is equipped with a package in order to easily change the side plate according to the volume displacement of the package and to change the film diameter while keeping the film guiding angle constant. In the rear area of the carry-in belt conveyor that conveys at equal intervals in the vertical direction, side belts that sandwich and carry the article to be packaged from both sides are installed, and the belt conveyor direction from each of the pair of frames that support these side belts The guide rods are slidably supported on the subframe extending in the vertical direction, and side plates are provided at the lower ends of the guide rods on both sides of the belt conveyor, respectively. In addition to forming a slanted edge by diagonally removing from the upper corner of the edge, the upper edge of the film guide side edge of the both side plates respectively. A tube shaper is configured by holding both side portions of the strip-like film with a surface contact slide and guiding guides to the inclined edge substantially upright to constitute a tube shaper. On the other hand, the tube shaping is performed via a bearing ring fixed to each upper end of each guide rod. The device is suspended from a horizontally arranged operating shaft, and the two gears at both ends of the operating shaft are engaged with the two rack teeth fixed to the machine base wall, while the handle is attached to the open end of the operating shaft. The provided lift means is configured.
[0005]
In the above apparatus, when changing the diameter of the tube film in accordance with the change in the height of the packaged object, the operating shaft is rotated by the first handle, and is suspended from the operating shaft by rolling of the gear with respect to the rack teeth. The tube shaper is moved vertically up and down. By such vertical movement, the height of the top surface forming area of the tube film changes up and down and the tube diameter changes. The tube shaper has a slanted edge formed by removing the bottom of both side plates diagonally backward from the upper edge of the edge on the film introduction side, and the strip film slides upright guide plates into a groove shape in both side plates. Guided while deforming. In short, the guiding of the band-shaped film is performed by changing the angle only in the tube shaper, so that the guiding angle of the film does not change even if the tube shaper is displaced up and down, and therefore the tube shaper and the film are not changed. There is no change in friction.
[0006]
In changing the diameter of the tube film in accordance with the change in the width of the package, the distance between the pair of frames that support the side belts on both sides is adjusted by operating the second handle in accordance with the width of the package. At the upper ends of the guide rods fixed to these frames, the bearing rings slide on the operation shafts to adjust the distance between the side plates. Such adjustment displacement is just beside and has no influence on the film guiding angle.
[0007]
When the side plates are displaced laterally, the side plates are displaced along the wire provided between the upper end corners, and the folding of the film by the wire is not hindered.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 2, the bag-filling and packaging machine has a strip-shaped film 11 unwound from a roll film on two rolling rolls 10, which moves through an idle roller 12, and is turned back into a reverse groove shape by a tube shaper 13. Into a tube. On the other hand, the object to be packaged 14 is carried into the tube film at equal intervals in the vertical direction by the belt conveyor 15. On the other hand, the pair of side belts 17 supported by the frame 16 conveys the tube film integrally with the packaged object by the rotation, and the pair of upper and lower seal bars 18 and 19 seal-cut the tube film between the packaged objects. .
[0009]
As shown in FIG. 1, the tube shaper 13 has a pair of side plates 20 on both sides of the conveyance area of the package 14 as a basic structure. As shown in FIG. 3, the lower side of the side plate 20 is inclined backward from the upper corner 21 of the film introduction side edge. The guide plate 23 is formed upright at the upper corner as shown in FIG. 4 with both side surfaces of the belt-like film 11 being brought into contact with the surface and sliding to the inclined edge 22 as shown in FIG. To do. The angle between the front surface of the guide plate 23 to be erected and the inclined edge 22 is ideally about 120 degrees. Even if the guide plate 23 is erected with the guide plate 23 tilted forward, the angle hardly changes. It is desirable to consider. In addition, the oppositely inclined edges 24 on both sides of the guide plate 23 also have a specified angle, and the film is formed into a tube by these two edges.
[0010]
The sub-frame 25 extending forward from the support frame 16 of the side belt 17 as in FIG. 2, the both side plates 20, slidably vertically through the two guide rods 26 provided upright on these side plates top while supporting, as well as engage in form suspended in said two guide rods 26 respectively at the upper end of the bearing ring 27 the operating shaft 28 of the horizontal arrangement as in FIG. 1, respectively provided near both ends of the operating shaft The two gears 29 are respectively engaged with two rack teeth 31 fixed to the machine wall 30 on both sides of the tube shaper.
Therefore, when the gear 29 is rotated via the operation shaft 28 with the handle 32 at the open end of the operation shaft, each gear 29 rolls along the rack teeth 31 in the slit 33 as shown in FIG. Displace.
Tube film twofold edges for welding as shown in FIG. 6, the upper surface level of the lower two center seal roll 37 is always constant, the virtual ceiling face forming zone of the tube film 11 by changing the height of the side plates By displacing as shown by the arrow to the position of the line, the diameter of the tube can be arbitrarily enlarged 99. It is possible to operate the handle nut 35 with the screw portion 34 of the operation shaft in FIG. 1 and fix the operation shaft 28 with the flange portion 36 formed on the operation shaft so that the operation shaft does not naturally displace. .
[0011]
As shown in FIGS. 3 and 4, the perforation guides 40 are fixed to the upper corners of the film guide side edge of the side plate 22, and the wire 41 such as a wire is disposed between the guides. Therefore, the moving film 11 is a part of the wire 41. The tube is securely folded to form a tube without sagging. For example, as shown in FIG. 7, when both ends of the wire 41 are fixed to the machine base 42, the displacement of the both side plates 20 in both directions can be displaced along the wire 41. However, in this case, since the machine base 42 needs to be displaced up and down, for example, a member suspended from the operation shaft 28 of FIG. 1 can be used.
Further, as shown in FIG. 8, the weight bodies 43 are fixed to both ends of the wire rod so that only the side plate 20 can slide. Further, as shown in FIG. 9, one end of the wire 41 is fixed to the side plate 20 on one side via the pin 44, and the other end of the wire 41 is connected to the spring spring 45 fixed to the other side plate, The side plate can be displaced by the expansion and contraction of the spring 45 without loosening the wire 41.
[0012]
As shown in FIG. 11, idle rollers 62 are rotatably supported on fixed shafts 61 projecting in opposite horizontal directions from sleeves 60 fixed to the film guide side edge upper corners of the side plate 22, and these rollers 62 support the film 11. An example of deriving is provided. Since the roller 62 rotates as the film 11 moves, there is an effect of reducing film friction.
[0013]
As shown in FIG. 10, female screw sleeves 46 fixed to a pair of frames 16 that support the side belts 17 on both sides are installed between machine wall walls 47 on both sides of the tube shaper, and both left and right screws 49, 50 of a rotatable screw rod 48 are mounted. And the second handle 51 is installed at the open end of the screw rod. When the screw rod 48 is rotated by the second handle 51, the distance between the frames 16 on both sides is arbitrarily changed by the screws 49 and 50. Therefore, when the distance between the side belts 17 is changed in response to the change in the width of the article 14 to be packaged, the distance between the two subframes 25 in FIG. 1 automatically changes, and at the same time, the distance between the side plates 20 is changed to shape the film. Change the width. In this case, the mechanism shown in FIGS. 7 to 9 functions effectively.
[Brief description of the drawings]
FIG. 1 is a front sectional view of a cylinder-making means. FIG. 2 is a side view of the entire apparatus. FIG. 3 is a side view of one side of a cylinder-making side plate. FIG. 4 is a front view of the side plate. -V line view [Fig. 6] Relationship between center sealer and tube film [Fig. 7] Installation explanation of film folding wire [Fig. 8] Installation explanation of film folding wire [Fig. 9] Film folding wire [Fig. 10] Front sectional view of side belt portion [Fig. 11] Front view of side plate according to another embodiment [Fig. 12] Explanatory diagram of conventional example [Fig. 13] Explanatory diagram of conventional example [Explanation of reference numerals]
DESCRIPTION OF SYMBOLS 11 ... Band-shaped film 13 ... Tube shaper 14 ... Packaged article 15 ... Conveyor 16 ... Frame 17 ... Side belt 18 ... Seal bar 20 ... Side plate 22 ... Inclined edge 23 ... Guide plate 24 ... Edge 25 ... Sub-frame 26 ... Guide rod 27 ... Bearing link 28 ... Operating shaft 29 ... Gear 30 ... Machine frame 31 ... Rack teeth 32 ... First handle 37 ... Center sealer 40 ... Perforated guide 41 ... Wire rod 42 ... Machine base 43 ... Weight body 44 ... Pin 45 ... Spring spring 46 ... Female thread sleeve 49 ... Screw

Claims (6)

A pair of frames that support the side belts are installed in the rear area of the conveyor belt for carrying the articles to be packaged and transported at equal intervals in the vertical direction. in the subframe to extend the belt conveyor direction from each of the guide rod and slidably supported respectively vertical slide, wherein each disposed side plates on both sides of the belt conveyor to the lower end of each guide rod, these side plate lower edge portion respectively A slanted edge is formed by obliquely removing from the edge upper corner on the belt- film introduction side, and both sides of the belt-like film are provided with surface contact slides on the film guide-side edge upper corner of the both side plates. while composing the tube shaping device provided with a guide plate for guiding the inclined edge generally upright, solid wherein each guide rod respectively upper Together through the bearing ring hung operating shaft of the horizontal arrangement of the tube shaping device for the two gears of the operating shaft ends, while respectively engaging the two rack teeth fixed to the machine frame wall, An apparatus constituting lift means formed by providing a handle at the open end of the operation shaft. Each fixed internally threaded sleeve on a pair of frames for supporting the both side straps, the left and right screw erection to and rotatable threaded rod machine base walls of both sides tube shaper with respectively engaged, the threaded rod opening The apparatus according to claim 1, wherein the distance between the side plates can be displaced integrally with the side belts by operation of the second handle at the end. A wire rod is arranged through a perforation guide fixed to each of the film guide side edge upper corners of both side plates, and both ends of the wire rod are respectively fixed to a machine base so that the side plates can be displaced along the wire rod. The apparatus according to 1 or 2. 2. A wire rod is arranged through a perforation guide fixed to each of the film guide side edge upper corners of both side plates, and a weight body is provided at at least one end of the wire rod, so that the side plates can be displaced along the wire rod. Or the apparatus of 2. The wire rods are arranged through perforation guides respectively fixed to the film guide side edge upper corners of the both side plates, and at least one end of the wire rod is connected to the side plate via an extension spring, and the side plates are extended along the elastic springs . The apparatus according to claim 1 or 2, wherein the displacement is enabled . The apparatus according to claim 1 or 2, wherein an idle roller for guiding a film is rotatably supported on a fixed shaft protruding in an opposite direction from an upper corner of the film guide side edge of both side plates.