JP3002771B2 - Film bag making equipment of horizontal bag making and filling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt-like film drawn from a film roll, which is formed into a tube, and an object to be packaged is supplied into the formed tube-like film. In a horizontal bag making and filling machine that obtains a pillow package by performing a horizontal seal cut at the front and rear positions of the packaged object, an adjustment mechanism that can adjust the bag making size according to the size of the packaged object is provided. And a film bag making apparatus.

[0002]

2. Description of the Related Art In a horizontal bag making and filling machine for producing a pillow package, a film bag making device is provided at a position where a band-shaped film drawn from a film roll and a material to be packed are fed and joined. It is configured such that an article to be packaged is filled and supplied into a cylindrical film formed into a shape. In the horizontal bag making and filling machine, there is a request to change the bag making size (width and height) of the tubular film according to various factors such as the shape, dimensions and other capacity of the article to be packaged. For example, there is a film bag making apparatus disclosed in JP-A-64-32305. This bag-making apparatus has an upper surface of a film lower guide plate that supports and guides a lower portion of the cylindrical film,
The first moving member and the second moving member are arranged so as to overlap with each other in a mutually movable state. The second moving member is provided with a film lateral guide member for supporting and guiding the side of the cylindrical film so as to be vertically movable, and the second moving member is connected to a width adjusting mechanism. Further, in the film lower guide plate and the first moving member, elongated guide through holes that are inclined with respect to the film feeding direction are respectively formed,
At predetermined positions of the first and second moving members, guide pins that engage with the corresponding guide through holes are respectively formed to hang down.
That is, in response to the film horizontal guide member being moved and adjusted by operating the width adjusting mechanism, the first moving member moves along the guide through hole with respect to the film lower guide plate, and the first moving member moves to the first moving member. On the other hand, when the second moving member moves along the guide through hole, the bag making width is arbitrarily changed. In addition, the rear side of the film lower guide plate on the upstream side in the film feeding direction is inclined in parallel with the guide through hole, and the corresponding ends of both moving members are formed with inclined sides parallel to the guide through hole. When the bag making width is adjusted, the first and second moving members are always positioned substantially on the same line with the inclined sides of the first and second moving members and the rear side of the film lower guide plate.
The moving member moves.

[0003]

In the film bag making apparatus, the rear side of the film lower guide plate and the first and second films are arranged.
Since the inclined side of the moving member is always positioned substantially on the same line, the lower portion of the tubular film can be smoothly folded and guided even if the bag making width is changed. However, since the portion for guiding the lower portion of the tubular film is formed by stacking three plate members, the case where a stiff film or a thin film is used, or a heavy object to be wrapped or wrapped. When wrapping a product or the like whose bottom surface is not flat, when the packaged material transferred by the supply means is transferred to the bag making apparatus, each moving member and the film lower guide plate are connected. It is pointed out that a problem arises in that the packaged product is caught by a step formed between the portions and cannot be stably delivered to the tubular film. Also, especially when the bag making width is set wide, the first
Guide through-holes for guiding the moving member and the second moving member were exposed, and the to-be-packaged product could be caught in the through-holes.

Further, when the adjustment of the bag making width is considered in the state where three plate materials are overlapped, when the minimum adjustment width is set when all three plate materials are overlapped, the maximum adjustment width is three times the minimum adjustment width. You can only set up to twice. That is, it is pointed out that the adjustment range of the bag making width is limited.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks inherent in the prior art, and has been proposed in order to solve the problem suitably. It is an object of the present invention to provide a film bag making apparatus for a horizontal bag making and filling machine capable of performing a transfer of a packaged object to a tubular film in a favorable manner.

[0006]

[Means for solving the problems] To overcome the above-mentioned problems,
In order to appropriately achieve the intended purpose, the film bag making apparatus of the horizontal bag making and filling machine according to the present invention is a film for forming a belt-shaped film drawn from a film roll into a cylindrical shape in a feeding process. A bag-making apparatus, which is horizontally disposed with a required gap on both left and right sides of a center of a feeding line of the band-shaped film, and defines a V-shaped introduction part upstream of the feeding direction. Each of the formed inclined sides is formed, and a pair of fixed plates that support the lower part of the cylindrical film are opposed to each other with the feeding line center located above the fixed plate and the film is adjusted by the bag making width adjusting mechanism. A pair of side plates that can be moved parallel to and away from each other by being moved in parallel to the feeding direction and arranged on each side plate to extend horizontally toward the center of the feeding line and fixed to the inner edge thereof An inclination that is almost the same as the inclined side of the plate A horizontal introduction member having sides formed thereon, and the upper surface of each fixed plate is superimposed on the upper surface of each fixed plate at the same horizontal level as the horizontal introduction member, and each of the corresponding side plates is pivotally supported so as to be horizontally swingable. A movable plate set to substantially cover a space between the fixed plate and the horizontal introduction member defined on the side plate corresponding to at least a line connecting the inclined side of the fixed plate and the inclined side of the horizontal introduction member; A cam for horizontally swinging each moving plate in accordance with the spacing between the side plates when the pair of side plates are moved toward and away from each other, and a horizontal introduction member in each of the side plates. A vertical introduction member that is disposed above the disposition position in the film feeding direction, and has an inclined side that is inclined upward from the downstream side toward the upstream side in a lower portion on the upstream side in the film feeding direction; Each of them is arranged and moved obliquely up and down with respect to the vertical introduction member by the height adjustment mechanism, and is fed at the lower portion on the upstream side in the film feeding direction substantially the same as the inclined side of the vertical introduction member. And a height adjusting member that sets the bag making height by contacting the upper surface of the film with the inclined side when the belt-shaped film is formed into a tubular shape. .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of a film bag making apparatus for a horizontal bag making and filling machine according to the present invention will be described.
This will be described below with reference to the accompanying drawings.

A film bag making apparatus 10 according to the embodiment shown in FIG. 1 is provided at both ends of a base 12 extending in a width direction intersecting with a feeding direction of a strip film (not shown). Parallel support members 14 are provided, respectively, and the bag making apparatus 10 is attached to a predetermined position of the horizontal bag making and filling machine via the two support members 14, 14. As shown in FIG. 2, a concave portion 12 a that is recessed downward is formed in a portion corresponding to the center of the film feeding line of the base 12, and a longitudinal direction of the cylindrical film formed into a cylindrical shape by the bag making apparatus 10. Is configured not to interfere with the base 12.

On the upper surface of the base 12, a pair of fixed plates 1 are symmetrically arranged in the width direction with the center of the film feeding line interposed therebetween.
6 and 16 are disposed horizontally, and both fixed plates 1
A gap S of a required size is defined between the opposing sides of the film 6, 16 in parallel with the film feeding direction. Both fixed plates 16,1
Numeral 6 functions to support and guide the lower part of the cylindrical film, and the film is fed to the downstream side with the overlapping portion in the longitudinal direction of the film facing downward through the gap S.
On the upstream side of each fixed plate 16 in the film feeding direction, there is formed an inclined side 16a which is separated from the other fixed plate 16 toward the upstream side.
It is configured to define a V-shaped introduction portion between 6a and 16a. The overlapping portion is formed by folding the vicinity of the longitudinal edge of the film to be cylindrically formed downward through both inclined sides 16a, 16a. On the lower surface of the fixed plates 16, 16, which are adjacent to the inclined sides 16 a, guide plates 18, 18 are vertically provided on both sides of the gap S so as to face each other.
Reference numeral 18 functions to guide the overlapping portion in the longitudinal direction of the tubular film to the downstream side in a vertical state.

On the upper surfaces of the fixing plates 16, 16,
A pair of side plates 20 for setting the width dimension of the tubular film
Are arranged opposite to each other in the width direction sandwiching the center of the film feeding line, and the both side plates 20 and 20 are configured to move obliquely with respect to the film feeding direction by a bag making width adjusting mechanism 22 described later. Have been. Each side plate 20 is shown in FIG.
As shown in FIG. 5, the parallel portion 20a extends in parallel with the fixed plate 16, and the inclined portion 20b extends upward from the upstream end of the parallel portion 20a in the film feeding direction toward the upstream side. Is done. On the lower surface of the parallel portion 20a of the side plate 20, a moving plate 24 overlapping with the corresponding upper surface of the fixed plate 16 has a fulcrum position on the upstream end side via a fulcrum pin 25 as shown in FIG. It is pivoted to be able to swing horizontally. This moving plate 24
A mounting piece 26 is provided upright at a position facing the outside of the side plate 20 (a side away from the center of the feeding line).
A compression spring (elastic member) 28 is elastically interposed between the movable plate 24 and the groove 27 formed on the corresponding outer surface of the side plate 20 so that the outer side 24a of the movable plate 24 comes into contact with a plate cam 30 described later. It is energized (see FIG. 1).

Each side plate 20 has a horizontal introduction plate 32 as a substantially triangular horizontal introduction member extending horizontally inward and upstream from the disposition position of the movable plate 24, at the same horizontal level as the movable plate 24. It is arranged in. The inner side 32a of the horizontal introduction plate 32 is set to have substantially the same inclination angle as the corresponding inclined side 16a of the fixed plate 16,
Even if the width is adjusted, the inclined side 16 of the fixed plate 16 is always
a and the inclined side 32a of the horizontal introduction plate 32 are configured to substantially coincide with each other on a straight line. When the bag making apparatus 10 is set to the minimum adjustment width, the horizontal introduction plate 32 is set so as to face the upper end of the upstream end of the fixed plate 16 where the inclined side 16a is formed. ing. In addition, each side plate 20 has a vertical introduction plate 34 as a vertical introduction member extending to the upstream side below the inclined portion 20b.
The vertical introduction plate 34 has an inclined side 34a at the lower portion on the upstream side, which is inclined in parallel with a groove 64 described later formed in the inclined portion 20b. The vertical introduction plate 34 is formed by forming a thin plate into an L-shape, a vertical portion thereof abuts against the inner surface of the side plate 20 and a horizontal portion thereof is formed by the horizontal introduction plate 3.
It is attached in a state of contacting the upper surface of the second. Note that the lower end of the inclined side 34a is connected to the inclined side 3 of the horizontal introduction plate 32.
It is set to substantially coincide with the upstream end of 2a.

Outside the parallel portion 20a of each side plate 20, a rack 36 of a required length constituting the bag making width adjusting mechanism 22 is provided with a fixing plate 16 corresponding to the side plate 20 as shown in FIG. (Inclination outwardly separated from the side plate 20 from the downstream side to the upstream side in the film feeding direction). This rack 36
The support member 14 and the holding plate 40 which is disposed above the member 14 via a spacer 38 are slidably faced, and the back surfaces of the teeth are slidably supported by the spacer 38. Is to be done. Support member 1
A pair of pinions 42, 44, which are spaced apart in the direction of inclination of the rack 36 and interengage with the rack 36, between the support plate 4 and the holding plate 40 on the side opposite to the spacer 38 with the rack 36 interposed therebetween.
Is rotatably supported. And one pinion 42
By rotating the pinions 42, 4 in the forward and reverse directions.
The side plate 20 is configured to move obliquely in parallel with the film feeding direction under the meshing action of the rack 4 and the rack 4. The adjustment pinion 42 on the downstream side in the film feeding direction is used.
Faces a position corresponding to the base 12 and has a rotating shaft 4
6 protrudes downward from the base 12.

The adjustment pinions 42, 42 located on the left and right sides of the center of the film feed line are connected so as to rotate in mutually opposite directions via a connection mechanism 48 provided below the base 12. . That is, the sprocket 50 is disposed at the lower end of the rotation shaft 46 of the adjustment pinion 42 located on the right side in FIG. A gear 52 is disposed at the lower end of the rotating shaft 46 of the adjustment pinion 42 located on the left side, and a gear 54 meshing with the gear 52 is supported by a support shaft 56 rotatably suspended on the base 12.
It is arranged in. A sprocket 58 is disposed on the support shaft 56 coaxially with the gear 54.
An endless chain 60 is wound between the sprocket 8 and the sprocket 50 of the adjustment pinion 42. Further, a width adjustment handle 62 is disposed on a rotation shaft 46 extending above the holding plate 40 in the right adjustment pinion 42,
When the adjustment handle 62 is rotated in the forward and reverse directions, the left and right adjustment pinions 42 and 44 rotate in opposite directions, whereby the left and right side plates 20 and 20 face each other across the center of the film feeding line. , And moves parallel to and away from each other obliquely with respect to the feeding direction (see FIGS. 5 and 6).

On the upper surface of each fixed plate 16, a plate cam 30 is disposed at a position facing the outer side 24a of the corresponding moving plate 24, and a required shape formed inside the cam 30 (outer portion) is formed. Of the moving plate 24 on the cam side 30a of the
The outer side 24a is always in contact with the elastic force of the compression spring 28. The cam side 30a of the plate cam 30 is formed in a letter shape as shown in FIG. 1, and the movable plate 24 is horizontally swung inward or outward according to the movement of the side plate 20, so that at least the inclination of the fixed plate 16 Fixed plate 1 defined on the side plate 20 side corresponding to the line connecting side 16a and inclined side 32a of horizontal introduction plate 32
It is set so as to substantially cover the space between 6 and the horizontal introduction plate 32. The pair of side plates 20, 20 are separated from each other as much as possible.
In the state (set to the maximum adjustment width), the inside inclined side 24b of each moving plate 24 is, as shown in FIG. 6, the corresponding inclined side 32a of the horizontal introduction plate 32 and the inclined side 1 of the fixed plate 16.
6a substantially coincides with the inclined extension line.

A guide groove 64 is formed parallel to the inclined portion 20b of each side plate 20, and a height adjusting member 66 extending upstream from the inclined portion 20b is slidably fitted in the guide groove 64. (See FIG. 4). This height adjusting member 6
As shown in FIG.
Is formed so as to be aligned in the film feeding direction with the same inclined angle as the inclined side 34a.
The upper part of the belt-like film pulled out and fed from above a is guided in abutment to set the bag making height of the tubular film. A height adjusting mechanism 67 that moves the height adjusting member 66 along the guide groove 64 and adjusts the separation distance from the vertical introduction plate 32 is provided on the inclined portion 20 b of each side plate 20. This height adjustment mechanism 67
b, a first sprocket 68 and a second sprocket 70 as rotatable wheels are rotatably provided apart from each other in the extending direction of b.
An endless chain 72 as a cord is wound between the sprockets 68 and 70. A height adjusting member 66 is fixed to an appropriate part of the endless chain 72 via a screw 74, and a height adjusting handle 76 is provided on the first sprocket 68. Therefore, by rotating the height adjusting handle 76 disposed on the first sprocket 68 in the forward and reverse directions to move the endless chain 72 in the forward and reverse directions, the height adjusting member 66 is vertically introduced along the guide groove 64. The movement is adjusted obliquely up and down with respect to the plate 32 (see FIGS. 3 and 8). The height adjusting member 66 is configured to overlap the vertical introduction plate 32 in the width direction.
Is set to the minimum height, the vertical introduction plate 32 is overlapped so as to substantially coincide with the whole.

As shown in FIG. 1, on the upper surface of the inclined portion 20b of each of the side plates 20, a scale 78 having a scale corresponding to a bag making height dimension by the height adjusting member 66 is provided at required intervals. In addition, a pointer 80 indicating the scale of the scale 78 is provided on the height adjusting member 66 so as to move integrally. That is, since the pointer 80 points to the corresponding scale of the scale 78 with the movement of the height adjusting member 66, the operator can move the left and right height adjusting members 6
The height adjustment of 6, 66 can be performed while checking the scale indicated by the corresponding hands 80, 80.

[0017]

Next, the actual use of the film bag making apparatus according to this embodiment will be described. First, when adjusting the film bag making apparatus 10 to form a cylindrical film having a small bag making width and height, the width adjusting handle 62 of the bag making width adjusting mechanism 22 is rotated in a required direction. The rotation of the width adjustment handle 62 causes the left and right adjustment pinions 42, 42 to rotate in opposite directions via the linkage mechanism 48, and
The pair of side plates 20, 20 are moved in parallel in a direction obliquely approaching the film feeding direction via the left and right racks 36, 36 meshing with the film 2, 2, 42, and the vertical introduction plate 34, 34 is matched to the position corresponding to the desired width of the tubular film. The moving plate 24 corresponding to the movement of each side plate 20 is horizontally swung outward along the cam side 30 a of the plate cam 30 under the elasticity of the compression spring 28. At this time, as shown in FIG. 5, the horizontal introduction plate 3 is placed on the upper surface of the fixed plate 16 defining the introduction section.
2, the inclined side 32a is made to coincide with the inclined side 16a of the fixed plate 16.

Further, a height adjusting handle 76 of a height adjusting mechanism 67 provided on each side plate 20 is rotated in a required direction, and a pointer 80 is placed on a scale of a scale 78 corresponding to a desired bag making height. The height adjusting member 66 is moved so as to match. That is, the rotation of the height adjustment handle 76 moves the endless chain 72 wound between the first sprocket 68 and the second sprocket 70, and accordingly, the height adjustment member 66 moves along the guide groove 64. And moves close to the vertical introduction plate 34.

As described above, when the belt-like film is fed to the film bag making apparatus 10 whose bag making size has been adjusted, the upper surface of the film is separated by a pair of height adjusting members 66, 66 whose width is separated in the width direction. As a result of being bent at the tips of the inclined sides 66a, 66a and being guided to contact the inclined sides 66a, 66a to be fed downstream along the inside of both side plates 20, 20, a substantially cylindrical opening at the bottom is obtained. Molded into a shape. Further, a portion hanging down below the cylindrical film is folded downward while being guided by the inclined side 32a of the horizontal introduction plate 32, and is introduced into the gap S, thereby forming a tube in which a longitudinal overlapping portion is formed. A shaped film is formed.

Then, an object to be packaged (not shown) is charged and supplied to the cylindrical film from an upstream side through a suitable supply means. At this time, in the region where the packaged material supplied by the supply means is delivered to the tubular film (upstream position where the overlapping portion of the film is introduced into the gap S), the horizontal introduction plate 32 and the fixed plate 16 Since there is no step between them, the packaged product can be smoothly delivered to the tubular film.

Next, when a cylindrical film having a large bag making width and height is formed by changing the order, the width adjusting handle 62 of the bag making width adjusting mechanism 22 is rotated in the opposite direction.
The right and left adjustment pinions 42, 42 are rotated in mutually opposite directions via the linkage mechanism 48. As a result, the pair of side plates 20 and 20 are moved in parallel so as to be obliquely separated from the film feeding direction as shown in FIG. 6 via the racks 36 and 36 meshing with the pinions 42 and 42, respectively. At the position corresponding to the width of the cylindrical film according to the proper order.
In addition, the moving plate 24 moves with the movement of each side plate 20,
The plate cam 30 is horizontally swung inward along the cam side 30a so that the inner inclined side 24b faces between the fixed plate 16 and the inclined sides 16a, 32a of the horizontal introduction plate 32.
In addition, even if the separation width of the pair of side plates 20 is changed, the inclined side 16a of the fixed plate 16 and the inclined side 32a of the horizontal introduction plate 32 are aligned substantially in line.

Further, the height adjustment handle 76 of the height adjustment mechanism 67 provided on each side plate 20 is rotated in the opposite direction, and the height adjustment member 76 is moved into the guide groove as shown in FIGS. After moving the pointer 80, which is moved obliquely upward along with the height 64 and moves integrally with the height adjusting member 76, to a position indicating a scale corresponding to a desired bag making height of the scale 78, the bag making width and height are set. A large cylindrical film is formed.

In the film bag making apparatus 10 of the embodiment, when the pair of side plates 20, 20 are set to the maximum adjustment width (see FIG. 6), the inner inclined side 24b of each moving plate 24 is set to the corresponding horizontal introduction plate. 32 inclined side 32a and fixed plate 1
6 substantially coincides with the inclined extension line between the inclined side 16a and
When the space between each fixed plate 16 and the horizontal introduction plate 32 is substantially covered and the minimum adjustment width is set, each horizontal introduction plate 32
However, no void is formed facing the upper portion of the upstream end where the inclined side 16a of the fixed plate 16 is formed. In addition, as shown in FIG. 1, even when the width between the maximum adjustment width and the minimum
The space between the fixed plate 16 and the horizontal introduction plate 32 defined on the side plate 20 side corresponding to the line connecting the inclined side 16a of the horizontal introduction plate 32 and the inclined side 32a of the horizontal introduction plate 32 with the movement of each side plate 20 Since the moving plate 24 is configured to be almost always covered by the corresponding horizontally oscillating moving plate 24, the lower surface of the packaged object can be reliably supported and guided, and there is no hindrance to the folding guide of the film. In a region (upstream position where the overlapping portion of the film is introduced into the gap S) in which the packaged material supplied by the supply means is delivered to the cylindrical film, the position between the movable plate 24 and the fixed plate 16 is reduced. There is no step, and smooth delivery of the packaged article to the tubular film is achieved. Further, even if the separation width (bag making width) between the pair of side plates 20 is changed, the inclined side 16a of the fixed plate 16 is not changed.
And the inclined side 32a of the horizontal introduction plate 32 are always aligned substantially on a straight line, so that the folding guide of the overlapping portion of the tubular film can be smoothly performed. Further, by horizontally swinging the movable play 24, 24 in accordance with the adjustment of the separation width of the side plates 20, 20, an adjustment range three times or more with respect to the minimum bag making width can be set. It is possible to cope with the order change in.

In the embodiment, the left and right moving plates are horizontally oscillated by the plate cam. However, the present invention is not limited to this, and the pins provided on the moving plate slide in the grooves of the groove cam. A configuration of freely inserting and inserting can be adopted. Further, as a mechanism for synchronously moving the left and right moving plates, a configuration in which the left and right pinions are rotated in mutually opposite directions by a bevel gear or the like disposed on one shaft may be adopted.
Further, for the height adjusting mechanism, a combination of a rack and a pinion can be used in addition to a combination of a sprocket and an endless chain or a pulley and a belt. Furthermore, it is also possible to integrally form the horizontal introduction plate and the vertical introduction plate on the side plate, or to dispose a member integrally formed with the horizontal introduction plate and the vertical introduction plate on the side plate. Further, the horizontal introduction plate may be provided outside the vertical introduction plate.

[0025]

As described above, according to the film bag making apparatus of the horizontal bag making and filling machine according to the present invention, the minimum bag making width can be adjusted three times or more in accordance with the change in the size of the article to be packaged. The range can be set, and the shared range can be widened. In addition, since the portion supporting the lower portion of the cylindrical film has a configuration in which two plates are stacked, the configuration is simpler than the conventional one, and the delivery of the packaged object to the cylindrical film is performed well. obtain. Furthermore, the space between the fixed plate and the horizontal introduction member defined on the side plate corresponding to the line connecting the inclined side of the fixed plate and the inclined side of the horizontal introduction member is configured to be almost always covered by the movable plate. Therefore, there is an advantage that the delivery to the tubular film is performed in a more stable state when a plurality of units are packaged together.

[Brief description of the drawings]

FIG. 1 is a partially cutaway plan view showing a film bag making apparatus of a horizontal bag making and filling machine according to an embodiment of the present invention.

FIG. 2 is a front view of the film bag making apparatus according to the embodiment.

FIG. 3 is a side view showing a partial cross section of the film bag making apparatus according to the embodiment.

FIG. 4 is a cross-sectional view of the height adjusting mechanism indicated by line AA in FIG. 3;

FIG. 5 is a plan view showing a state where the film bag making apparatus according to the embodiment is adjusted to a small bag making width.

FIG. 6 is a plan view showing a state where the film bag making apparatus according to the embodiment is adjusted to a maximum bag making width.

FIG. 7 is a plan view showing a state in which a height adjusting member of the film bag making apparatus according to the embodiment is adjusted to a high position.

FIG. 8 is a side view showing a state where a height adjusting member of the film bag making apparatus according to the embodiment is adjusted to a high position.

[Explanation of symbols]

Reference Signs List 14 support member 16 fixing plate 16a inclined side 20 side plate 22 bag making width adjustment mechanism 24 moving plate 24a outer side 28 compression spring (elastic member) 30 plate cam 30a cam side 32 horizontal introduction plate (horizontal introduction member) 32a inclined side 34 vertical Introduction plate (vertical introduction member) 34a Inclined side 36 Rack 42 Adjustment pinion 48 Linkage mechanism 66 Height adjustment member 67 Height adjustment mechanism 68 First sprocket 70 Second sprocket 72 Endless chain 78 Scale 80 Pointer S Clearance

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-119209 (JP, A) JP-A-7-242207 (JP, A) Fully open sho 64-32305 (JP, U) Really open sho53- 30464 (JP, U) JP-A 51-37461 (JP, U) JP-A 56-33705 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65B 9/00-9 / 24 B65B 47/00-47/10

Claims (5)

(57) [Claims] 1. A film bag making apparatus for forming a belt-like film drawn from a film roll into a cylindrical shape in a feeding process thereof, comprising: An inclined side (16a) that is horizontally disposed with a gap (S) and that defines a V-shaped introduction section upstream of the feeding direction.
Are formed, respectively, and a pair of fixed plates (16, 16) supporting a lower portion of the tubular film, and opposed to each other with the center of the feed line positioned above the fixed plates (16, 16), By the bag width adjustment mechanism (22), it is moved parallel to the film feeding direction and
A pair of side plates (20, 20) that can move away from each other, and each side plate (20) to extend horizontally toward the center of the feed line
And the inner edge thereof is attached to the inclined side (1
A horizontal introduction member (32) having an inclined side (32a) having substantially the same inclination as that of the horizontal introduction member (32a), and corresponds to the top surface of each fixed plate (16) at the same horizontal level as the horizontal introduction member (32). Each of the side plates (20) is pivotally supported so as to be able to swing horizontally, and at least the inclined side (16a) of the fixed plate (16) and the inclined side of the horizontal introduction member (32) are moved by moving the side plates (20, 20) toward and away from each other. A moving plate (24) set to substantially cover the space between the fixed plate (16) and the horizontal introduction member (32) defined on the side plate (20) side corresponding to the line connecting (32a) and The pair of side plates are engaged with the moving plates (24), respectively.
When (20,20) move toward and away from each other, both side plates (20,2)
(0), a cam (30) for horizontally swinging each moving plate (24) in accordance with the separation interval, and a cam (30) for horizontally moving the horizontal introduction member (32) in each of the side plates (20), respectively. A vertical introduction member (34) provided with an inclined side (34a) that is inclined upward from the downstream side to the upstream side at a lower portion of the upstream side in the film feeding direction, and each of the side plates (20). The vertical introduction member (34) is moved obliquely up and down with respect to the vertical introduction member (34) by the height adjustment mechanism (67), and the vertical introduction member (34) is inclined at the lower part on the upstream side in the film feeding direction. An inclined side (66a) is formed which is substantially the same as the side (34a) and is aligned in the feeding direction, and the upper surface of the film comes into contact with the inclined side (66a) when forming the tubular film into a cylindrical shape, and the bag making height is increased. And a height adjusting member (66) for setting the height of the film. 2. The cam is a plate cam (30), and an outer side (24a) of the movable plate (24) is elastically attached to a cam side (30a) formed on an outer portion facing the movable plate (24). 2. A film bag making apparatus for a horizontal bag making and filling machine according to claim 1, wherein said film bag making and filling machine is constituted so as to be constantly pressed and urged via a member (28). 3. The bag making width adjusting mechanism (22) is provided with each of the side plates.
(20) The horizontal introduction member disposed so as to be integrally movable with the horizontal introduction member.
A rack (36) parallel to the inclined side (32a) of (32), a pinion (42) meshing with the corresponding rack (36), and both pinions (42, 4
Linking means (4) for linking (2) to rotate in opposite directions
8) The film bag making apparatus of the horizontal bag making and filling machine according to claim 1 or 2, comprising: 4. A pair of rotating wheels (68, 68) rotatably disposed on each side plate (20) at a distance in the direction of movement of the height adjusting member (66). 70), and a rope body (72) wound around both rotating wheels (68, 70) and fixed at an appropriate position on the height adjusting member (66), and the rotating wheels (68, 70) The film bag making apparatus for a horizontal bag making and filling machine according to any one of claims 1 to 3, wherein the endless chain (72) is configured to rotate in the forward and reverse directions to move the chain. 5. A guide (80) that moves integrally with each of the height adjusting members (66), and each side plate (20) is provided with a scale corresponding to a bag making height dimension. A film bag making apparatus for a horizontal bag making and filling machine according to claim 4.