JP2019108142A - Film holding device for horizontal type bag-making filling machine - Google Patents

Abstract

To provide a film holding device for horizontal type bag-making filling machine which can maintain the cylindrical film at a certain support height and obtain a well-shaped pillow package without damaging the goods.SOLUTION: The main body 29 is supported in a freely up-down movable manner by the holding member 24 provided on the first support member 15 of the upper seal body 11 as if overlooking from above the carry-out conveyor 14. The regulation member 26 and the pressing member 25 are provided on the main body 29 so as to move integrally. The holding member 24 and the main body 29 integrally move in the vertical direction in a state where the contact part 42 of the holding member 24 is in contact with the second bracket 43 of the main body 29 from below. In the process that the first support member 15 moves downward together with the upper seal body 11, after the regulation member 26 touches the transport bed 19 of the carry-out conveyor 14, the support height of the pressing member 25 on the carry-out conveyor is maintained via the downward movement of the holding member 24 with respect to the main body 29.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a film holding device for holding a tubular film from above when the tubular film is transversely sealed in a horizontal form-fill-seal machine.

  In the horizontal form-fill-seal machine, excess air in the bag is eliminated when applying a transverse seal in a direction crossing the feed direction of the tubular film between the respective articles supplied at predetermined intervals in the tubular film. Degassing packaging is performed so as to be packaged. For example, in the degassing apparatus disclosed in Patent Document 1, a pressing body that moves integrally with the upper seal body and an air cylinder that moves the pressing body up and down are provided to operate the air cylinder at a predetermined timing, The holding body is lowered to the degassing position and the tubular film is pressed from above on the upper surface of the article, and the tubular film is transversely sealed by the sealing body, and the tubular film is formed by the knife embedded in the sealing body. It is cut to obtain a pillow package. Thereby, the inside of the bag in the obtained pillow package can be degassed, and a shaped package can be obtained without the bag expanding around the contents.

Patent No. 5432212

  In the degassing apparatus disclosed in Patent Document 1, when transversely sealing, when pressing the left and right side surfaces of the tubular film to obtain a package with gusset, the tubular film is inserted before being sandwiched by the seal body. The upper surface of the film is pressed by a pressing body, and the film is pushed from both sides to form a gusset. However, when the presser body made of an elastic material such as sponge is moved to the degassing position by the air cylinder, the upper seal body is further lowered to sandwich the tubular film with the lower seal body. The presser body moved to the upper seal body is lowered integrally with the upper seal body to lower the height position, and the tubular film is strongly pressed to the upper surface of the article, so that the article may be damaged by a weak article or the like There is such a problem.

  Therefore, the present invention provides a film holding device in a horizontal form-fill-seal machine capable of obtaining a well-shaped pillow package without damaging the articles by maintaining the support height of the cylindrical film constant. The purpose is to

The film holding device in the horizontal form-fill-seal machine of the invention according to claim 1 of the present application is:
Between each article (W, W) supplied at predetermined intervals in the cylindrical film (F), the cylindrical film (F) is sandwiched between the upper and lower sealing bodies (11, 12) to apply lateral sealing A lateral sealing means (10) and a gusset forming means (21) for pressing the side of the tubular film (F) to form a gusset when sandwiching the film between the sealing bodies (11, 12); A film holding device in a horizontal form-fill-seal machine, comprising: an unloading conveyor (14) provided downstream of the sealing means (10);
A pressing member (25) capable of supporting the upper surface of the tubular film (F);
Position regulating means (M) supported so as to be movable up and down integrally with the pressing member (25);
A support member (15) supporting the upper seal body (11);
Shaping means (22) comprising: the support member (15) and an engagement portion (42, 43) for engaging the position defining means (M);
A support means (19a) for supporting the position defining means (M) when the pressing member (25) is lowered;
The shaping means (22) is disposed downstream of the seal body (11),
The engaging portion (42, 43) releases the engagement when the position defining means (M) is supported by the support means (19a), and the support member (M) 15) allow movement
The position defining means (M) is supported by the support means (19a) according to the time when the seal body (11) comes into contact with the film, and the pressing member (25) The upper surface of the tubular film (F) conveyed on the upper side is positioned at a supporting height at which the cylindrical film (F) is conveyed.
According to the first aspect of the present invention, the sealing member sandwiches the cylindrical film so that the sealing member holds the cylindrical film at a position where the pressing member is positioned at the target supporting height before the sealing member laterally seals the cylindrical film. As it can be maintained without changing before cutting, the holding condition of the tubular film at the time of transverse sealing can be properly set according to the height of the article, and the film can be well deaired and shaped. Under horizontal sealing and cutting. In addition, the support height of the tubular film can be maintained at a height at which the article is not pressed during deaeration shaping, and the pressing pressure of the article from above does not act on the article. As a result, even a soft article will not give damage such as a shape loss.

In the invention according to claim 2, the engagement portion (42, 43) adjusts the pressing timing at which the pressing member (25) is positioned at the support height with respect to the lowered position of the upper seal body (11). Adjusting means (28) is provided.
According to the second aspect of the present invention, since it is possible to change and set the timing of positioning the pressing member at the support height, it is possible to easily cope with the change of the product to articles having different sizes.

In the invention according to claim 3, the position regulating means (M) changes the support height of the pressing member (25) when the position regulating means (M) is supported by the support means (19a). It is characterized in that possible adjustment means (27) are provided.
According to the invention of claim 3, the support height of the film upper surface by the pressing member can be positioned at any height according to the article height.

In the invention according to claim 4, the position defining means (M) is a main body in which a slide rod (30) is slidably supported by the support member (15) and the pressing member (25) is disposed. (29) and a defining member (26) disposed on the main body (29) and supported by the support means (19a), and the position defining means (M) comprises the engaging portion (42, 43). In the engaged state)),
The support member (15) is configured to move along the slide rod (30) by releasing the engagement in the engagement portion (42, 43).
According to the invention of claim 4, the pressing member which is moved up and down by engaging with the supporting member can be maintained with a simple structure and at a constant supporting height, and the supporting for the pressing member positioned at the supporting height The member can be moved up and down well by the slide rod.

In the invention according to claim 5, the pair of seal bodies (11, 12) approach each other from the mutually separated position, sandwich the tubular film (F), and move toward the downstream side in the sandwiching state Are configured to be separated from each other and return to the upstream side,
The shaping means (22) is disposed on the support member (15) so as to be capable of moving up and down, and comprises a roller (34) so as to be rotatable.
The roller (34) is characterized in rolling the support means (19a) when moving toward the downstream side of the seal body (11).
According to the invention of claim 5, when the horizontal sealing means performs box motion, the shaping means moves integrally with the seal body, and when moving in the film transport direction, the support height of the cylindrical film by the pressing member The movement is stable and smooth, and the cylindrical film can be well shaped.

In the invention according to claim 6, an upper guide (48) covering the upper surface of the cylindrical film (F) transported on the guide surface upstream of the seal body (11), and a side portion for guiding the left and right side surfaces A guide means (47) for guiding the tubular film (F) into a rectangular tube shape by means of the guides (49, 49) is provided.
According to the invention of claim 6, since the guides surrounding the upper surface and the left and right side surfaces of the cylindrical film conveyed on the upstream side of the seal body are provided, the cylinder can be cut and sealed without damaging the articles. Film can be stably shaped into a square tube.

The invention according to claim 7 is characterized in that the shaping means (22) is disposed upstream and downstream of the seal member (11) in the support member (15).
According to the seventh aspect of the present invention, the shaping means is provided on each of the upstream side and the downstream side in the film transport direction sandwiching the seal body, so that the shaping effect of the cylindrical film can be further enhanced.

  ADVANTAGE OF THE INVENTION According to this invention, the support height of the cylindrical film by a pressing member is maintained uniformly, and it can obtain the pillow package articles | goods shaped well without swelling, without giving a damage to articles | goods.

It is a schematic perspective view which shows the principal part of a horizontal form-fill-seal machine. It is a schematic side view which shows the film holding | maintenance apparatus of a horizontal form-fill-seal machine, Comprising: (a) shows the state of the shaping means before a sealing body clamps a cylindrical film, (b) shows a cylindrical film The state of the shaping means when holding is shown. It is the schematic which looked at the shaping means from the downstream side of a transverse sealing means. It is a principal part schematic side view showing the 1st modification of shaping means. It is a principal part schematic side view showing the 2nd modification of shaping means.

  Next, referring to the attached drawings, the film holding device in the horizontal form-fill-seal machine according to the present invention will be described with reference to the attached drawings, referring to a preferred embodiment applied to food or other easily damaged articles such as explain.

  The horizontal form-fill-seal machine (packaging machine) is a feeding means while continuously performing longitudinal sealing by longitudinal sealing means on the polymerization end edge in the longitudinal direction of the tubular film F formed into a tubular shape by the bag making means. Thus, the tubular film F is transported toward the transport downstream side. Further, the articles W are supplied at predetermined intervals by the supplying means into the cylindrical film F formed by the bag making means, and the horizontal sealing means 10 is provided between the respective articles W supplied in the cylindrical film F. A pillow packaged product (packaged product) is obtained by sandwiching with a pair of upper and lower seal members 11 and 12 and applying a transverse seal crossing the transport direction of the tubular film F and cutting.

  As shown in FIG. 1, a transport conveyor 13 is disposed on the transport upstream side of the tubular film F with the horizontal sealing means 10 interposed therebetween, and a discharge conveyor 14 is disposed in series on the transport downstream side. In the horizontal sealing means 10, the first support member (support member) 15 and the second support member are disposed vertically opposed to each other across the transport path of the cylindrical film F between the transport conveyor 13 and the unloading conveyor 14. The two support members 15 are configured to move relatively close and separate by the actuating mechanism. While the upper seal body 11 is supported by the upper first support member 15 and the lower seal body 12 is supported by the lower second support member, the two support members 15 are in close proximity to each other, so that the pair is vertically The seal bodies 11 and 12 sandwich the tubular film F, and the film F is provided with a transverse seal intersecting the film transport direction.

  The pair of seal members 11 and 12 approach each other from an initial position farthest from the cylindrical film F, hold the cylindrical film F, apply lateral sealing, and hold the cylindrical film F. After horizontal movement toward the downstream side of the conveyance by a required distance, a so-called box motion operation of separating from each other and moving toward the upstream side of the conveyance again is performed. In addition, when the cylindrical film F is pinched | interposed by the seal bodies 11 and 12, the cylindrical film F is cut | disconnected by the seal | sticker part with the knife arrange | positioned by one seal body 11. As shown in FIG.

  The conveying conveyor 13 and the unloading conveyor 14 have a conveyor frame 16 in which a movable frame is movably disposed back and forth in the film conveying direction with respect to a fixed frame, and each of a plurality of pulleys pivotally supported by the conveyor frame 16 The endless belt 17 is wound so as to be able to travel. The transport speed of the unloading conveyor 14 is set to be higher than the transport speed of the transport conveyor 13. Also, between the turning portions of the endless belts 17 wound around the end of the conveying conveyor 13 and the beginning of the unloading conveyor 14, small diameter rollers 18 are rotatably disposed on the corresponding movable frame (see FIG. 2).

  The opposing ends of the transport conveyor 13 and the discharge conveyor 14 are linked to the lateral sealing means 10 via an opening and closing mechanism, and are separated from each other according to the operating position of the upper and lower sealing members 11 and 12 in the lateral sealing means 10. -While approaching and moving, it is comprised so that it may move toward the conveyance direction back and forth of the cylindrical film F integrally with the sealing bodies 11 and 12 (refer FIG. 2). That is, when the seal bodies 11 and 12 are separated from each other, the opposing end portions of the two conveyors 13 and 14 approach each other, and when the seal bodies 11 and 12 are close to each other and sandwich the tubular film F The opposing ends are separated from each other to form a gap between the opposing ends of the two conveyors 13 and 14 for allowing movement of the seal members 11 and 12 (see FIG. 2B). Further, in both conveyors 13 and 14, the transport bed (guide surface) 19 supporting the lower surface of endless belt 17 on which tubular film F to which article W is supplied is placed and transported is greater than the lateral width of endless belt 17. The width is set wide, and the left and right edges extend outward from both sides of the endless belt 17. Then, in the unloading conveyor 14, rollers 34 provided on a defining member 26 described later can roll, with extension portions (supporting means) 19a extending outward from the left and right sides of the endless belt 17 in the transport bed 19 It is configured to be supported by

  A gusset forming means 21 is provided with a pair of push pieces 20, 20 on the left and right sides sandwiching the tubular film F, as shown in FIG. 3, at the front and back positions of the film transport direction sandwiching the pair of seal bodies 11, 12. It is arranged. The gusset forming means 21 is disposed movably integrally with the movement of the pair of seal members 11 and 12 in the film transport direction back and forth, and the push-in pieces 20 and 20 move the seal members 11 and 12 up and down. It is configured to move close to and away from each other in synchronization with movement, and to horizontally move between a retracted position retracted from the transport path and a folded position close to the film transport center. And each pushing piece 20, 20 pushes in the middle of the height direction inside the side of the cylindrical film F which is transversely sealed by the pair of sealing members 11 and 12. In addition, pushing-in of the cylindrical film W by the pushing pieces 20 and 20 is finished pushing in the side of the cylindrical film F inward according to the time when the pair of seal bodies 11 and 12 contact the cylindrical film F and start sandwiching. Is most preferable.

  As shown in FIGS. 1 and 2, the film holding device of the embodiment includes a first shaping means 22 disposed on the downstream side of the pair of seal members 11 and 12 in the conveyance direction. The first shaping means 22 is supported by the first support member 15 which is moved up and down by supporting the upper upper seal body 11 of the pair of seal bodies 11, 12, and faces the upper side of the discharge conveyor 14. The end portion of the cylindrical film F fed into the discharge conveyor 14 is pressed from above to degas the air in the bag, and the upper surface of the cylindrical film F is shaped flat without swelling.

  As shown in FIG. 2, a holding member 24 is disposed on the first support member 15 so as to be separated from the conveyance downstream side via the attachment member 23, and the first shaping means 22 is attached to the holding member 24. , Is vertically movably supported. The first shaping means 22 includes a pressing member 25 for supporting the upper surface of the cylindrical film F from above and a position regulating means M for maintaining a supporting height for pressing the upper surface of the cylindrical film F by the pressing member 25 and supporting the same. A first adjusting means 27 provided in the position defining means M for adjusting the support height of the pressing member 25 and a second adjusting means for adjusting the pressing time at which the pressing member 25 is positioned at the support height And 28. Further, the first shaping means 22 includes the extending portion 19a for supporting the position defining means M when the first support member 15 (upper seal body 11) is lowered.

  As shown in FIG. 3, the position defining means M is disposed on the main body 29 in which the upper ends and the lower ends of a pair of slide rods 30 and 30 (left and right) separated from each other are connected by connectors 31 and 32. And a pair of slide rods 30, 30 are supported so as to slide up and down with respect to the holding member 24, and the position specifying means M holds The member 24 (first support member) is biased downward by its own weight. The pressing member 25 is disposed on the lower connecting member 32 connecting the lower ends of the slide rods 30, 30 via the first bracket 33, and the pressing member 25 is located below the lower connecting member 32 with the conveying surface of the endless belt 17. It is configured to face approximately parallel. In addition, the pressing member 25 is a flat member set larger than the width of the article W which is the size of the peripheral portion of the article W accommodated in the cylindrical film F and the length in the front-rear direction In order to be able to cover the entire top surface of the tubular film F, it can be supported substantially horizontally over a region longer than the front-rear length of the article W (see FIG. 2B).

  The defining member 26 is a U-shaped member opened downward as shown in FIGS. 1 and 3, and a base member 26 a extending in the width direction moves up and down with respect to the slide rods 30 and 30. It is freely supported. Further, rollers 34 are rotatably supported at lower ends of the leg members 26b extending downward from the left and right ends of the base member 26a, and both the rollers 34, 34 are provided on the endless belt 17 of the delivery conveyor 14. The right and left sides of the traveling area are configured to be able to abut on the upper surfaces of the extension portions 19a and 19a of the transport bed 19. When the rollers 34, 34 are in contact with and supported by the transport bed 19, the lower ends of the rollers 34, 34 are positioned lower than the pressing member 25 and the pressing member 25 has a predetermined height on the unloading conveyor 14. Configured to be positioned at the supporting height of the Each leg 26b is attached to be adjustable in position along an elongated hole 26c extending in the vertical direction with respect to the base member 26a.

  The first adjusting means 27 is, as shown in FIGS. 1 to 3, a first screw shaft 35 rotatably disposed on the first bracket 33 and extending in the vertical direction, and a base of the defining member 26. A first female screw hole provided in the member 26a and into which the first screw shaft 35 is screwed is provided, and the defining member 26 and the pressing member 25 are configured to be integrally movable by the first adjusting means 27. . In addition, the code | symbol 36 shown to a figure shows the 1st lock nut for position fixation. In addition, a first adjustment knob 37 is provided at the upper end of the first screw shaft 35, and the first adjustment shaft 37 rotates the first screw shaft 35 in the forward and reverse directions, whereby the defining member 26 is the slide rods 30, 30. Configured to move up and down with respect to the As a result, the relative height position of the pressing member 25 and the roller 34 supported and supported by the transport bed 19 can be changed. That is, the support height of the pressing member 25 can be adjusted according to the height dimension of the article W in a state where the roller 34 is in contact with the transport bed 19 and the defining member 26 is supported. The supporting height of the pressing member 25 is adjusted to a position higher than the upper surface of the article W, ie, a position where the film is not pressed against the upper surface of the article W when the upper surface of the cylindrical film F is pressed from above. Ru. Further, the first bracket 33 is provided with a first scale 38 extending parallel to the first screw shaft 35 and having a scale at a required interval, and a first pointer indicating a scale on the base member 26a. 39 (see FIG. 4) is provided so that the adjusted value can be known accurately.

  As shown in FIGS. 1 to 3, the second adjustment means 28 is screwed into a second female screw hole provided in the holding member 24 and the second female screw hole and extends in the vertical direction. An abutting portion 42 made of an elastic material such as rubber is provided at an upper end portion of the second screw shaft 41 having the second screw shaft 41 and extending upward from the second female screw hole. In addition, the code | symbol 40 shown to a figure shows the 2nd lock nut for position fixation. Further, a second bracket 43 is provided on the upper connector 31 connecting the upper ends of the slide rods 30, 30, and the contact portion 42 is configured to be able to contact the lower surface of the second bracket 43 from below. There is. The main body 29 (position defining means M) is integrated with the upper seal body 11 (first support member 15) in the vertical direction with the contact portion 42 in contact with and engaged with the lower surface of the second bracket 43. In the non-engaged state where the contact portion 42 is separated from the second bracket 43, the main body 29 (position defining means M) and the upper seal body 11 (first support member 15) Relative movement with is allowed. A second adjustment knob 44 is provided at a lower end portion of the second screw shaft 41, and the second adjustment screw 44 rotates the second screw shaft 41 in the forward and reverse directions to hold the holding member 24 (first support member 15). Are configured to adjust the height position of the abutment portion 42. As a result, it is possible to set a pressing time at which the pressing member 25 moving integrally with the main body 29 is positioned at a support height at which the upper surface of the cylindrical film F is pressed and supported from above. In the embodiment, at the optimum time according to the time when the pair of seal members 11 and 12 contact the tubular film F, the position defining means M is supported and supported by the extending portion 19a of the transport bed 19, and the pressing member A pressing time is set to position the support 25 at the support height. That is, in the embodiment, it is a time (film contact time) before the pair of seal members 11 and 12 contact the tubular film F, and the push pieces 20 and 20 of the gusset forming means 21 are tubular film F The pressing time is adjusted so that the pressing member 25 presses the upper surface of the cylindrical film F from above and supports it flatly before pressing the side of the film (film pressing time). In the embodiment, the first support member 15 and the position defining means M can be engaged from the contact portion 42 provided on the first support member 15 and the second bracket 43 provided on the main body 29 (position defining means M) And the second adjusting means 28 is provided in the engaging portion. The position of the pressing member 25 with respect to the first support member 15 is adjusted by the second adjustment means 28 in the engaged state of the first support member 15 and the position defining means M by the engaging portions 42 and 43. The pressing timing at which the pressing member 25 is positioned at the support height is changed in relation to the lowered position when the upper seal body 11 moves downward. In the embodiment, the position defining means M which moves integrally with the first support member 15 in the engaged state of the engaging portions 42 and 43 is biased downward by its own weight, but an elastic member such as a spring etc. Can also be biased downward.

  The second bracket 43 is provided with a second scale 45 which extends parallel to the second screw shaft 41 and has a scale at a required interval, and the holding member 24 has a second pointer 46 for pointing the scale. There is provided (see FIG. 4), and the adjusted value can be known accurately. The scale of the first scale 38 of the first adjustment means 27 indicates the support height at which the pressing member 25 supports the upper surface of the cylindrical film F, and the scale of the second scale 45 of the second adjustment means 28 The height at which the pressing member 25 starts contact with the upper surface of the cylindrical film F on the unloading conveyor 14 (height of the article W + α) is shown. Further, the scales of the scales 38 and 45 of the first and second adjustment means 27 and 28 are directed to the operation side where the operator performs various operations in the horizontal form-fill-seal machine.

  As shown in FIG. 1, the film holding device of the embodiment includes a second shaping means (guide means) 47 disposed on the transport upstream side of the pair of seal members 11 and 12. The second shaping means 47 is disposed on the transport conveyor 13 and is configured to shape the tubular film F transported by the endless belt (guide surface) 17 of the transport conveyor 13 into a rectangular tubular shape. The second shaping means 47 includes an upper guide 48 which covers the tubular film F from above and guides it so that the film upper surface is flat, and a pair of guides which guide the left and right side surfaces of the tubular film F to be flat. The cylindrical film F conveyed by the conveyance conveyor 13 is guided by the upper guide 48 and the pair of side guides 49, 49 so as to have a rectangular cylindrical shape. The both-side guides 49, 49 extend near the transport end of the transport conveyor 13 (see FIG. 2). The upper guide 48 is configured to be positionally adjustable by the height adjustment means 50 at a position according to the height dimension of the article W, and the both-side guides 49 and 49 are widthwise of the article W by the width adjustment means 51. Positionally adjustable to the position according to the dimension.

  Next, the operation of the film holding device in the horizontal form-fill-seal machine according to the embodiment will be described.

  The upper guide 48 of the second shaping means 47 and the tubular film F in which the articles W are stored at predetermined intervals are placed on the transport conveyor 13 and transported toward the transverse sealing means 10. The upper surface and the left and right side surfaces are guided by the pair of side guides 49, 49 and shaped into a square tube. In the process in which the pair of seal members 11 and 12 approach each other from the position where they are separated from each other, the push pieces 20 and 20 of the gusset forming means 21 move from the retracted position to the folded position. Gussets are applied to the front and rear sides of the tubular film F sandwiching the article W by pressing the both sides of the tubular film F inwards in the front and rear of the film transport direction sandwiching the sealing position. Preferably, the push-in pieces 20, 20 of the gusset forming means 21 push the side of the cylindrical film F inward at the time when the upper seal body 11 contacts the upper surface of the cylindrical film F. In addition, after the articles W accommodated in the cylindrical film F pass through the transition portion from the transfer conveyor 13 to the discharge conveyor 14, the facing opposite end portions of the transfer conveyor 13 and the discharge conveyor 14 are separated from each other. A gap is defined to allow the seal bodies 11 and 12 to move so as to sandwich the film (opposite movement of the seal bodies 11 and 12).

  It is a time before the pair of seal members 11 and 12 contact the tubular film F, and before the pushing pieces 20 and 20 of the gusset forming means 21 push the side surface of the tubular film F, The pressing member 25 of the first shaping means 22 that moves down integrally with the upper seal body 11 in the engaged state in which the contact portion 42 abuts on the lower surface of the two brackets 43 presses the cylindrical film F from above. The air in the bag is degassed. Then, as shown in FIG. 2A, the cylindrical film F pressed against the upper surface by the pressing member 25 is positioned at a position slightly higher than the article height without pressing the article W, as shown in FIG. The rollers 34, 34 are in contact with the transport bed 19 to receive and support the defining member 26, and the support height by the pressing member 25 is maintained to flatly support the upper surface of the cylindrical film F.

  When the upper seal body 11 is further moved downward, as shown in FIG. 2B, the second bracket 43 of the main body 29 whose downward movement is restricted by the regulating member 26 supported by the conveyance bed 19 is an abutment portion. 42 is separated and the engagement is released, and by the downward movement of the upper seal body 11 with respect to the main body 29, the pair of seal bodies 11 and 12 sandwich the cylindrical film F from above and below. Sealing and cutting are performed to obtain a pillow package. The first shaping means 22 in which the rollers 34, 34 provided on the leg members 26b, 26b are in contact with the transport bed 19 of the unloading conveyor 14 comprises the sealing members 11, 12 and the unloading conveyor 14 (transport bed 19). During movement in the film transport direction, the rollers 34, 34 roll on the transport bed 19 and move smoothly while maintaining the pressing member 25 at a support height.

  The second adjustment means 28 disposed on the holding member 24 with the upward movement of the upper seal body 11 in the process of moving the pair of seal bodies 11 and 12 holding the cylindrical film F apart from each other. After the contact portion 42 is in contact with the lower surface of the second bracket 43 from below and engaged, the main seal 29 of the first shaping means 22 and the defining member 26 move upward together with the upper seal body 11. Then, the rollers 34 are separated from the transfer bed 19 and the support of the film on the upper portion of the pillow package by the pressing member 25 is released. Since the endless belt 17 of the delivery conveyor 14 travels at a higher speed than the endless belt 17 of the transport conveyor 13, the pillow package obtained by transverse sealing and cutting by the transverse sealing means 10 is packaged by the pressing member 25. In a state in which the upper side of the cylindrical film F is covered at a predetermined height, it is reliably separated from the end of the cylindrical film F and conveyed downstream. Further, at a required timing until the seal members 11 and 12 release the cylindrical film F, the push pieces 20 and 20 of the gusset forming means 21 are retracted toward the retracted position, and the transport conveyor 13 and The opposing ends of the unloading conveyor 14 approach each other, and the conveyance between the conveyors of the tubular film F to which the article W is supplied is stably performed.

  In the film holding device according to the embodiment, at the time before the pair of seal members 11 and 12 contact the cylindrical film F, the cylindrical film F is moved upward by the holding member 25 that moves downward integrally with the upper seal member 11. Because it can be pressed out, the air inside the bag can be removed effectively. Further, since the pressing member 25 is supported and supported by the defining member 26 by the transport bed 19 of the carry-out conveyor 14 that transports the tubular film F, the tubular film F becomes an article W. Even if the soft article W is not pressed, the end of the cylindrical film F can be shaped without swelling without giving damage such as deformation of the form. In addition, since the pressing member 25 is maintained at a constant support height during the time when the sealing members 11 and 12 sandwich the tubular film F and perform transverse sealing and cutting, the film is well shaped. Horizontal sealing and cutting can be performed in the state. Furthermore, since the rollers 34, 34 are provided on the defining member 26 so that the rollers 34, 34 roll on the transport bed 19, the pressing member 25 is supported also in the box motion type lateral sealing means 10. The tubular film F can be smoothly moved to the downstream side by positioning at the height, and the cylindrical film F can be well shaped.

  In the embodiment, the tubular film F is positioned at a support height corresponding to the article height at a time before the side surface of the tubular film F is pushed by the push-in pieces 20, 20 of the gusset forming means 21. Since the upper surface of the support is supported, gusset formation by the gusset forming means 21 is performed well. Therefore, in the square cylindrical pillow package to which gusset was given, the good bag which does not lose the shape of the bag obtained and does not spoil appearance can be obtained stably. Further, since the first shaping means 22 is configured to move integrally with the upper seal body 11 and no dedicated driving means such as an air cylinder is used, the operation mechanism of the first shaping means 22 is simplified. Thus, it is possible to reduce the weight and to reduce the electrical control load. Furthermore, in the film holding device of the embodiment, since the second shaping means 47 for shaping the cylindrical film F into a square cylindrical shape is disposed on the transport upstream side of the horizontal sealing means 10, The shaping effect can be enhanced, and in the state where the tubular film F is shaped into a square tubular shape on the upstream side and the downstream side in the transport direction sandwiching the transverse sealing means 10, transverse sealing and cutting can be performed well.

  In packaging of a plurality of types, the first screw shaft 35 is rotated in the forward and reverse directions using the first adjustment knob 37 of the first adjustment means 27 according to the height dimensions of the different articles W. Under the action of screwing 35 and the first female screw hole, the defining member 26 is vertically moved with respect to the main body 29. As a result, the relative height positions of the rollers 34 and 34 serving as the lower end of the defining member 26 and the pressing member 25 change. Therefore, even in the case of an easily damaged article in the middle or the like, the support height by the pressing member 25 can be adjusted to a position capable of supporting the upper surface of the cylindrical film without pressing the upper part of the article W. After the first screw shaft 35 is rotated in the forward and reverse directions to adjust the support height of the pressing member 25, the first screw shaft 35 is fixed in position by the first lock nut 36.

  Further, the setting of the pressing time of the cylindrical film F by the pressing member 25 in correspondence with the operation position of the sealing bodies 11 and 12 and the film pressing time by the pressing pieces 20 and 20 of the gusset forming means 21 is the second setting. By rotating the second screw shaft 41 forward and reverse using the second adjustment knob 44 of the adjustment means 28, the holding member 24 is screwed to the second screw shaft 41 and the second female screw hole. The abutting portion 42 moves in the up and down direction. As a result, the relative height position of the holding member 24 and the rollers 34 and 34 in the engaged state in which the contact portion 42 is in contact with the lower surface of the second bracket 43 changes, and together with the upper seal body 11. When the regulating member 26 is moved downward, the rollers 34, 34 of the regulating member 26 are supported by the transport bed 19, and the pressing member 25 reaches the support height for pressing the upper surface of the tubular film F Is set. After adjusting the pressing time of the pressing member 25 by rotating the second screw shaft 41 forward and reverse, the second screw shaft 41 is fixed in position by the second lock nut 40. That is, the support height of the tubular film F by the pressing member 25 and the pressing time can be arbitrarily set by the respective adjustment means 27 and 28. In addition, since the screw shafts 35 and 41 are only rotated as in the embodiment, it can be properly and accurately adjusted according to the property of the article. Further, when adjusting the position by the first adjusting means 27 and the second adjusting means 28, it is possible to accurately adjust the position while confirming the scale of the scales 38, 45 indicated by the corresponding hands 39, 46.

(Modification example)
FIG. 4 and FIG. 5 show a modification of the film holding device, and only the portions different from the above embodiment will be described, and the same members as those described above and the members having the same functions are indicated by the same reference numerals. Is omitted.

  The film holding device of the first modification shown in FIG. 4 has the same shaping means as the first shaping means 22 shown in the embodiment as the second shaping means on the upstream side in the transport direction of the first support member 15. It was arranged. That is, the second shaping means 22 disposed on the upstream side in the transport direction sandwiching the first support member 15 and the first shaping means 22 disposed on the downstream side are symmetrical. The roller 34 of the defining member 26 of the second shaping means 22 disposed corresponding to the transport conveyor 13 is an extension (support means) 19 a of the transport bed 19 that supports the endless belt 17 of the transport conveyor 13. Supported by In the film holding device of the first modification as described above, the first shaping means 22 and the second shaping means 22 are more appropriate and before and after the film transport direction sandwiching the transverse sealing position by the sealing members 11 and 12 The tubular film F can be supported and shaped well.

  The film holding device of the second modification shown in FIG. 5 is another second shaping device configured to press the upper surface of the cylindrical film F by the weight of the pressing member 53 instead of the second shaping device 47 of the embodiment. 52 is adopted. In the second shaping means 52, a second holding member 55 is disposed on the first support member 15 via the second attachment member 54 so as to be separated from the transport upstream side, and the second holding member 55 is disposed. At the lower end of the slide shaft 56 supported movably in the vertical direction with respect to 55, a pressing member 53 formed in a block shape with an elastically deformable material such as sponge or soft rubber is disposed.

  The pressing member 53 is configured to be vertically movable integrally with the upper seal body 11 in a state in which the locking portion 56a provided on the slide shaft 56 is in contact with the upper surface of the second holding member 55. After the pressing member 53 abuts against the upper surface of the article via the tubular film F, the second holding member 55 moves relative to the slide shaft 56 to press the article W against the article W. Only the weights 53 and 56 of the slide shaft 56 are added. In the film holding device according to the second modification, the pressing member 53 for pressing the upper surface of the cylindrical film F by its own weight is adopted as the second shaping means 52, so the height dimension of the article W is changed by order change. Although it is not necessary to adjust the pressing member 53 even if it changes, the adjustment time involved in the order change can be shortened. Further, the second shaping means 52 is applied to the article W which is not damaged by the pressing by the pressing member 53.

(Other change example)
The present invention is not limited to the configurations of the above-described embodiments and the like, and can be modified as follows, for example. Moreover, various embodiments can be adopted within the scope of the present invention as to the configurations described in the examples and the like as well as the following modified examples.
(1) The roller 34 of the defining member 26 is in contact with the transport bed 19, but the roller 34 is in contact with the endless belt 17 or a supporting means that does not move up and down integrally with the upper seal body 11. can do. In addition, instead of the roller 34, a rotating member such as a ball bearing may be provided, or the roller 34 may be omitted, and the lower end of the leg of the defining member 26 may be in direct contact with the transport bed 19, endless belt 17 or support means. It can be done.
(2) The lateral sealing means 10 is not limited to the box motion type, and can be applied to an intermittent type horizontal form-fill-seal machine in which a pair of seal members 11 and 12 face each other at a fixed position to open and close.
(3) The adjusting means 27 and 28 for adjusting the support height and the pressing time of the pressing member 25 may be adopted as needed, for example, when the setting change is required corresponding to a plurality of types having different heights.
(4) In the configuration of the modification shown in FIGS. 4 and 5 in which the second shaping means 22 and 52 are disposed corresponding to the transport conveyor 13, the left and right side surfaces of the cylindrical film F are supported as needed. Side guides can be used together. The second shaping means 22, 47, 52 disposed corresponding to the transport conveyor 13 may be provided according to the properties of the film to be used, the properties of the article, etc. Means 22, 47, 52 can be omitted.
(5) The conveyance conveyor 13 may be omitted, and the article W placed on the conveyance bed (guide surface) may be conveyed via the film conveyed by the feeding means.

10 Horizontal sealing means, 11 upper sealing body (sealing body), 12 lower sealing body (sealing body)
14 unloading conveyor 15 first support member (support member) 17 endless belt (guide surface)
19a extension (supporting means), 21 gusset forming means, 22 first shaping means 25 pressing member, 26 defining member, 27 first adjusting means, 28 second adjusting means 29 body, 30 slide rod, 34 roller , 42 Contact part (engagement part)
43 second bracket (engagement portion), 47 second shaping means (guide means), 48 upper guide 49 side guide, M position defining means

Claims (7)

Horizontal sealing means for holding the tubular film between a pair of upper and lower sealing bodies and performing lateral sealing between the articles supplied at predetermined intervals in the cylindrical film, and when holding the film with the sealing body, A film holding device in a horizontal form-fill-seal machine comprising gusset forming means for pressing in the side of a cylindrical film to form a gusset, and an unloading conveyor provided downstream of the lateral sealing means, comprising:
A pressing member capable of supporting the upper surface of the tubular film;
Position regulating means supported so as to be movable up and down integrally with the pressing member;
A support member supporting the upper seal body,
Shaping means having the support member and an engaging portion for engaging the position defining means;
A support means for supporting the position defining means when the pressing member is lowered;
The shaping means is disposed downstream of the seal body,
The engaging portion releases the engagement when the position defining means is supported by the support means, and permits movement of the support member relative to the position defining means.
The position defining means is supported by the support means in response to the time when the seal body contacts the film, and supports the pressing member by pressing the upper surface of the cylindrical film conveyed on the unloading conveyor. A film holding device for a horizontal form-fill-seal machine, which is configured to be positioned at a supporting height.   The horizontal bag as set forth in claim 1, wherein the engaging portion is provided with an adjusting means for adjusting a pressing time at which the pressing member is positioned at the support height with respect to the lowered position of the upper seal body. Film holding device in filling machine.   The horizontal type according to claim 1 or 2, characterized in that the position defining means is provided with an adjusting means capable of changing the support height of the pressing member when the position defining means is supported by the support means. Film holding device in a form-fill-seal machine. The position defining means comprises a main body on which a slide rod is slidably supported by the support member and on which the pressing member is disposed, and a defining member disposed on the main body and supported by the support means. The position defining means is biased downward in an engaged state at the engagement portion,
The horizontal bag-filling machine according to any one of claims 1 to 3, wherein the support member is moved along the slide rod by releasing the engagement at the engagement portion. Film holding device. The pair of seal bodies are close to each other from the mutually separated position and sandwich the tubular film, move to the downstream side in the sandwiched state, and then move away from each other and return to the upstream side Configured and
The shaping means is provided on the support member so as to be capable of moving up and down, and is provided with a rotatable roller.
The film according to any one of claims 1 to 4, wherein the roller is configured to roll the support means when moving toward the downstream side of the seal body. Holding device.   Upstream of the seal body, a guiding means for guiding the tubular film in a rectangular tube shape is provided by an upper guide covering the upper surface of the tubular film conveyed on the guide surface and a side guide guiding the left and right side surfaces. The film holding device in a horizontal form-fill-seal machine according to any one of claims 1 to 5, characterized in that:   The film presser in a horizontal form-fill-seal machine according to any one of claims 1 to 5, wherein the shaping means is disposed on each of an upstream side and a downstream side sandwiching the seal body in the support member. apparatus.

Images