JP2010143639A - Bagging and packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bagging and packaging machine enabling a packaged item to be continuously bagged, packaged and manufactured from a cylindrical film roll to a packaging bag, and also attaining space saving and a size-reduced formation. <P>SOLUTION: The bagging and packaging machine comprises receiving rollers 11 oppositely arranged to hold a cylindrical film 92 fed out downwardly, a hanger 2 arranged in a cylinder of the cylindrical film in which an engagement part 2a is received and supported by the receiving rollers 11, a collecting part 2b passes from the engagement part 2a and between the receiving rollers 11 and a leaf spring 2c extending from the collecting part is expanded, a transferring means 3 having a receiving table 30 that can be moved up or down and a packaged item W mounted to the receiving table 30 is inserted from a lower end cylindrical port of the cylindrical film 92 fed out more downwardly than the leaf spring 2c and into its cylindrical space ε, receiver means 6 for holding the packaged item W inserted into the cylindrical space ε through the cylindrical film 92 by the advancement of the receiver 6, an upper sealer 43a holding the cylindrical film 92 to seal it, and a lower sealer 53a holding the cylindrical film 92 to seal it. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bag filling and packaging machine that automatically wraps an article to be packaged using a tubular film.

  The range of application of the packaging machine that continuously packs and packs the objects to be wrapped with the belt-like film is effective for two-dimensional and one-dimensional flat plate and bar-shaped items such as disposable chopsticks and spoons. (Japanese Patent Laid-Open No. 11-198910). When a packaged article is three-dimensionalized and the article itself is a large three-dimensional product, it is difficult to pack the bag with a belt-like film. There is a need for a packaging machine that can continuously pack a package without any defects in a film form that can accommodate a three-dimensional product having a large package itself. Under such circumstances, a packaging machine for bagging and packaging using a tubular film has been proposed (for example, Patent Document 1).

JP 2002-179001 A

  However, the invention of Patent Document 1 is a cylindrical cut film that is cut into a size corresponding to each packaged article, even though a cylindrical film is used. And it was the bag supply finished in the bag-like body which opened only one end. As a pretreatment, this bag supply had to be formed first. It was difficult to continuously pack and package the rolls for cylindrical films as they were, and productivity did not increase.

  The present invention solves the above-mentioned problems, and enables production from rolls for cylindrical films to packaging bags in which packages are continuously packed and packaged, improving productivity, and The purpose is to provide a bag-packing and packaging machine that can be space-saving and compact.

In order to achieve the above object, the gist of the invention described in claim 1 is that a cylindrical film fed downward is disposed between a pair of receiving rollers arranged to face each other so as to be sandwiched from the outside, and a cylindrical film of the cylindrical film. The upper engaging portion is received and supported by the receiving roller, a constricted portion extending downward from the engaging portion passes between the pair of receiving rollers, and a leaf spring portion extending from the constricted portion is directed downward. From a lower end cylinder opening of the tubular film that has a hanging tool suspended from the receiving roller and a vertically movable base, and is extended downward from the leaf spring part that is expanded. In the cylindrical space, a transfer means for inserting an article to be packaged placed on the cradle, and a holder moves forward and backward on the outside of the cylindrical film, Package to be inserted into the cylindrical space through the cylindrical film A receiving means for holding the paper, and disposed outside the tubular film, at a lower position than the leaf spring portion and at an upper position than an object to be packaged held by the receiving means, and is moved forward and backward. An upper sealer that sandwiches and seals the tubular film by advancing freely, and is disposed on the outside of the tubular film at a lower point than the object to be packaged held by the receiving means. A bagging and packaging machine comprising: a lower sealer that sandwiches and seals the tubular film by moving forward and moving.
A bag-packing and packaging machine according to a second aspect of the present invention is the bag-packing and packaging machine according to the first aspect of the present invention, which is disposed outside the cylindrical film at a height point of the leaf spring portion and resists the spring pressure that expands the leaf spring portion. A leaf spring pressing means for pressing in the closing direction with a leaf spring press, and arranged outside the cylindrical film at a point below the leaf spring press and above the upper sealer, so that it can move forward and backward. And a cutter that cuts the tubular film by advancing. A bag-packing and packaging machine according to a third aspect of the present invention is the bag-packing and wrapping machine according to the first or second aspect, wherein the bagging and packaging machine is opposed to the lower end opening of the tubular film at a lower position than the lower sealer, and moves up and down and up and down and left and right Thus, it is further characterized in that it further comprises a crease-stretching rod whose tip is arranged in a cylinder of a cylindrical cut film sealed by the upper sealer and cut by the cutter.

As in the first aspect of the invention, when the receiving roller, the lifting device, the transfer device, the receiving device, the upper sealer, and the lower sealer are provided, the equipment can be made compact and can be automated using a tubular film. A product with continuous packaging of products is made.
If the leaf spring pressing means and the cutter are further provided as in the second aspect of the invention, a bag-packed package product obtained by individually separating the packages can be smoothly produced.
According to the third aspect of the present invention, if a rod is further provided, the appearance of the lower part of the cylindrical cut film for wrapping the article to be packaged can be improved, so that the quality is improved.

  The bagging and packaging machine according to the present invention can automatically pack and pack a packaged article as it is, even if it is a three-dimensionally large packaged article from a roll for a cylindrical film, improving productivity and reducing the product. It achieves great effects such as cost reduction, quality improvement, space saving and compactness of the equipment.

  Hereinafter, the bag packing machine according to the present invention will be described in detail. 1 to 9 show an embodiment of the bag packing and packaging machine according to the present invention. FIG. 1 is a schematic front view thereof, FIG. 2 is a schematic right side view thereof, FIG. ) Is a front view of (a), and (c) is a right side view of (b). 4 to 6 are enlarged views around the upper seal mechanism, and FIGS. 7 to 9 are enlarged views around the lower seal mechanism.

The bag filling and packaging machine includes a base F, a cylindrical film supply means 9, a receiving roller 11, a feeding roller 12, a lifting device 2, a transporting device 3, a receiving device 6, an upper sealing mechanism 4, and a lower sealing mechanism 5. It has.
The base F is a frame member which is a frame member and is framed in an arrow shape as shown in FIGS. A cylindrical film supply means 9, a receiving roller 11, a feeding roller 12, a transferring means 3, a receiving means 6, an upper seal mechanism 4 and a lower seal mechanism 5 are attached to the base.

The receiving roller 11 is provided with a pair of rollers 11a and 11b (first rollers), and is rotatably attached to the upper portion of the base F. The pair of first rollers 11a and 11b are arranged in parallel with each other at a slight distance. A pair of feed rollers 12 are arranged immediately below the receiving roller 11 with both roller surfaces in contact with each other.
As shown in FIG. 1, a film roll 91 obtained by winding a heat-sealable tubular film 92 into a roll shape is attached to the left column F ₆ as a supply means 9 for the tubular film 92. A cylindrical film 92 fed out from the film roll 91 hangs down from an upper point in the center of the base via each roller 94. Further, the cylindrical film 92 passes between the pair of receiving rollers 11, is sandwiched between the feeding rollers 12, and is fed out below the feeding rollers 12 by the intermittent rotation of the motor 13. A tubular film 92 that is fed downward from the film roll 91 by intermittent movement is disposed directly above the feed roller 12 so that both the receiving rollers 11 are sandwiched from the outside, and the hanger 2 is held by the receiving roller. The

  The hanger 2 is a hanging member that includes an engaging portion 2a, a constricted portion 2b, a leaf spring portion 2c, and a standing plate 20, and the engaging portion 2a is received and supported by the receiving roller 11 (FIGS. 1 and 2). 3). The hanger 2 is arranged in advance in the cylinder of the cylindrical film 92 before the cylindrical film 92 fed out from the film roll 91 passes between the pair of receiving rollers 11 and between the feeding rollers 12. The engaging portion 2a at the upper part of the lifting tool is received and supported by the receiving roller 11, and a constricted portion 2b extending downward from the engaging portion is disposed so as to pass between the receiving rollers 11 and between the feeding rollers 12. The roller diameter is reduced at the feed roller portion through which the constricted portion 2b passes (FIG. 2), and a gap is secured between the feed rollers 12 through which the constricted portion 2b passes. The suspension 2 is suspended from the receiving roller 11 so that the leaf spring portion 2c further extending from the constricted portion 2b expands downward.

The engaging portion 2a of the present embodiment is a mounting member 21 having a roller (second roller 22) rotatably attached to its lower end, and the mounting member is disposed on both plate surfaces at the center upper portion of the upright plate 20 as shown in FIG. Is fixed. A pair of metal plate pieces are fixed to both plate surfaces at the center lower portion of the upright plate 20. A metal plate piece in which the leaf spring portion 2c and the constricted portion 2b of the narrow plate portion are integrated, and the upper half of the constricted portion 2b is fixed to the lower portion of the standing plate 20. A constricted portion 2b having a slightly smaller width than the engaging portion 2a extends downward from the upright plate 20, and a leaf spring portion 2c extends downward from the constricted portion. Both plate-like leaf spring portions 2c extending from the constricted portion 2b have elasticity of the leaf spring, and gradually spread downward from the lower end of the constricted portion 2b as shown in FIGS. Both plate surfaces of the plate spring portion 2c relating to the pair of metal plate pieces expand in a V shape when viewed from the front (FIGS. 1 and 4). The lateral width of the leaf spring portion 2c becomes wider downward from the lower end of the constricted portion 2b that has passed through the feed roller 12 (FIG. 2), and thereafter the width is kept slightly smaller than the lateral width of the upright plate 20. Extend to. The cylindrical film 92 that is fed downward from the film roll 91 via the feed roller 12 is widened to a size as shown in FIG.
As described above, the hanger 2 is arranged in the cylindrical film 92 and becomes a core on which the second roller 22 is placed on the receiving roller 11 that is one size larger and is rotatably supported. The engaging portion 2a is supported by the receiving roller 11 so as to be swingable by the leaf spring portion 2c that passes between the receiving rollers 11.

  The transfer means 3 is a transfer device for the article W to be packaged. An article to be packaged placed on the cradle 30 in the tubular space S from the tubular port of the lower end 92e of the tubular film, which has a cradle 30 that can move up and down, and is drawn out below the expanding plate spring portion 2c. The transfer means 3 is configured such that W is inserted. Here, the rod of the air cylinder that is the actuator 32 is used as a support shaft 31 that can move up and down, and the cradle 30 is fixed to the upper end thereof. The cylindrical film 92 fed downward from the film roll 91 via the feed roller 12 has a cylindrical opening greatly widened by the leaf spring expanding portion 23, and is a three-dimensionally shaped rectangular parallelepiped package W. Also, it can be easily accommodated in the cylinder (in the cylindrical space S) from the cylinder opening of the cylindrical film lower end 92e.

The packaged article W of the present embodiment has a rectangular parallelepiped shape as shown in the drawing, in which a plurality of board-like packaged unit products are stacked on the receiving table 30 in the step of unillustrated on the left side of FIG. The transfer means 3 of this embodiment uses the cradle 30 that can also move horizontally, and horizontally moves the articles W to be packaged stacked in the stacking process to the position shown in FIG. Thereafter, the feed roller motor 13 is driven, and the cylindrical film 92 is fed out below the leaf spring portion 2 c, and the article W to be packaged is stored in the cylindrical space S. The cylindrical film 92 moves, and the article W to be packaged on the cradle 30 is inserted into the cylindrical space S from the bottom end of the cylindrical film 92. In addition, the cradle 30 is moved to a position directly below the bottom end of the tubular film 92 at a position lower than the position in FIG. 1, and then the cradle 30 is moved upward so that the tubular film is already drawn downward. Of course, the article to be packaged W may be inserted from the lower end tube opening of 92.
Thus, when the article W to be packaged on the cradle 30 is inserted into the cylindrical space S of the cylindrical film 92, the process shifts to a bagging seal. However, the cradle 30 interferes with the lower seal. Therefore, the receiving means 6 holds the article W to be packaged instead of the cradle 30.

The receiving means 6 advances by moving the receiving means 6 forward and backward in the horizontal direction on the outside of the tubular film 92 in which the article W to be packaged on the receiving stand 30 is inserted in the tubular space S. The receiving device holds the article W to be packaged inserted into the cylindrical space S via the cylindrical film 92.
The receiving means 6 here is a rod that can be moved forward and backward by attaching an air cylinder 62 to frames F ₃ and F ₄ extending from the lower part of the left and right pillars F ₅ and F ₆ to the center of the gantry in FIG. A side-view L-shaped receiver 61 is fixed to the tip of 62a. When the air cylinder 62 is actuated, the receiver 61 advances as indicated by the chain line in FIG. Then, instead of the cradle 30 that supports the article W to be packaged inserted and accommodated in the cylindrical space S of the cylindrical film 92, the receiver 61 receives and supports the article W to be packaged via the cylindrical film 92 ( (See FIG. 8). In FIG. 1, the receiver 61 advances by the operation of the air cylinder 62 and receives and supports the lower part of the package W at a substantially middle point in the direction perpendicular to the paper surface.
In FIG. 1, when the receiving support of the article W to be packaged by the receiving tool 61 is completed, the actuator 23 of the transfer means 3 is operated and the receiving table 30 is lowered.

  The upper seal mechanism 4 includes a leaf spring pressing means 41, a cutting means 45, an upper sealer means 43, and a stripper means 47. These are disposed in order toward the lower side at a position below the feed roller 12 and at a position above the article W to be packaged supported by the cradle 30. The cutting means 45 turns the cylindrical film 92 into a cylindrical cut film 93 that is large enough to pack the article W to be packaged, and the upper seal opening of the cylindrical cut film is sealed by the upper sealer means 43.

  The leaf spring pressing means 41 is disposed outside the tubular film 92 at the height point of the leaf spring portion 2c, and is closed by the leaf spring presser 41a in a direction to close the leaf spring portion 2c against the expanding spring pressure. It is a device for pressing. The upper sealer means 43 is disposed outside the tubular film 92 at a point below the leaf spring portion 2c and above the article W to be packaged held by the receiving means 6, and in the horizontal direction. It is an apparatus having an upper sealer 43a that can be moved forward and backward and sandwiches and seals the tubular film 92 by moving forward. The cutting means 45 is arranged outside the tubular film 92 at a point below the leaf spring retainer 41a and above the upper sealer 43a, and advances and retreats in the horizontal direction so as to advance into the tubular space. It is an apparatus having a cutter 45a that cuts the tubular film 92 that has been drawn downward so as to accommodate the article to be packaged W in S. The cylindrical film 92 at a point above the package W is cut by the cutter 45a. The stripper means 47 is disposed outside the tubular film 92 at a lower position than the upper sealer 43a and at an upper position than the article W to be packaged held by the receiving means 6, and moves forward and backward in the horizontal direction. It is an apparatus having a stripper 47a for holding and holding the tubular film 92 by moving freely.

This embodiment, in FIG. 1, attached to the main cylinder 40 to the mid-height point of the right column F _5, toward the main cylinder 40 to the base center, the tip of the main rod 40a freely advance and retreat in the horizontal direction The substrate 40c is fixed through the connecting portion 40b. The main element side of the leaf spring pressing means 41, the cutting means 45, the upper sealer means 43, and the stripper means 47 of the upper seal mechanism 4 is attached to the substrate 40c. On the other hand, the synchronizing cylinder 48 and the synchronizing cylinder 49 that are paired with the main cylinder 40 are attached to the front end vertical plate F ₂ of the frame F ₁ protruding at the intermediate height point of the left column F ₆ in FIG. The vertical plate F _2, leaf spring retainer means 41 of the upper sealing mechanism 4, the cutting means 45, the upper sealer unit 43, the sub-element side of the stripper means 47 is attached. Between the main element side such as the leaf spring pressing means 41 of the upper seal mechanism 4 and the sub-element side of the upper spring mechanism 4 such as the leaf spring pressing means 41, a cylindrical film 92 that is fed downward by intermittent movement is disposed. .

  The leaf spring pressing means 41 includes a main cylinder 40, a substrate 40c, a leaf spring pressing 41a, a synchronization cylinder 48, and a leaf spring pressing sub-portion 41b. The protruding member of the leaf spring retainer 41a is attached to the upper portion of the substrate 40c, and the leaf spring retainer 41a attached to the substrate 40c abuts against the leaf spring portion 2c as the main rod 40a advances by the operation of the main cylinder 40. On the other hand, a protruding member of the leaf spring pressing sub-portion 41b is attached to the tip of the rod 48a of the synchronizing cylinder 48 that moves forward and backward in synchronization with the forward and backward movement of the main rod 40a. The leaf spring retainer 41a and the leaf spring retainer sub-portion 41b are disposed to face each other. When the main cylinder 40 is operated, the main rod 40a is advanced, and the synchronous cylinder 48 is operated to extend the rod 48a. The leaf spring retainer 41a advances and the leaf spring retainer sub-portion 41b also advances. Then, from the state of FIG. 4 to the state of FIG. 5, the lower end portion of the leaf spring portion 2c is pressed by the leaf spring presser 41a in a direction to close against the expanding spring pressure. Here, the plate spring presser 41a and the plate spring presser sub-portion 41b serving as the receiving member hold down the plate spring portion 2c until the opening degree of the plate spring portion 2c is closed. An elastic body is fixed to the tip portion of the leaf spring presser 41a.

The upper sealer means 43 includes a main cylinder 40, a substrate 40c, an upper sealer 43a, a synchronization cylinder, and an upper sealer sub-part 43b. A gap of the cutter 45a is provided below the leaf spring retainer 41a in the upper part of the substrate 40c, and the upper sealer 43a is attached to the substrate 40c below the substrate spring retainer 41a. Here, the degree of protrusion of the upper sealer 43a is slightly smaller than the leaf spring presser 41a as shown in FIG. On the other hand, the protruding member of the upper sealer sub-portion 43b having the same shape as the leaf spring presser sub-portion 41b is attached to the tip of the rod 48a of the synchronization cylinder 48 that moves forward and backward in synchronization with the forward and backward movement of the main rod 40a. The upper sealer sub-portion 43b is attached to the lower portion of the leaf spring holding sub-portion 41b with a space therebetween. The upper sealer 43a and the upper sealer sub-part 43b are disposed to face each other.
When the main cylinder 40 is operated, the main rod 40a is extended, and the synchronous cylinder 48 is operated to extend the rod 48a. The leaf spring retainer 41a advances and the leaf spring retainer sub-portion 41b also advances. At the same time, the upper sealer 43a advances, and the upper sealer sub-part 43b also advances. And it presses in with the leaf | plate spring retainer 41a until the leaf | plate spring part 2c is in the closed state. The upper sealer 43a and the upper sealer sub-portion 43b that have advanced together with the compression of the elastic body at the tip of the leaf spring retainer 41a sandwich and seal the cylindrical film 92 as shown in FIG. . Here, the upper sealer 43a and the upper sealer sub-part 43b constitute an impulse sealer in pairs, and when the cylindrical film 92 is sandwiched and sealed, the portions are instantly sealed (sealed). The upper sealer 43a and the upper sealer sub-part 43b have substantially the same lateral length as the substrate 40c of FIG. 2, and can cross-seal the cylindrical film 92 fed downward.

The cutting means 45 includes a main cylinder 40, a substrate 40c, a cutter sub-cylinder 42, and a cutter 45a. The sub cylinder 42 is fixed on the substrate 40c, and the cutter 45a is fixed by interposing the connecting piece 42b at the tip of the rod 42a of the sub cylinder. The cutter 45a is fixed to the connecting piece 42b at a substantially intermediate height point between the leaf spring presser 41a and the upper sealer 43a.
As described above, when the main cylinder 40 and the synchronous cylinder 48 are operated, the leaf spring portion 2c is pushed down to the closed state by the leaf spring retainer 41a and the upper sealer 43a and the upper seal 43a are moved upward. The tubular film 92 is sandwiched and sealed with the sealer sub-portion 43b. At this time, the sub cylinder 42 is not yet operated, and the cutting edge of the cutter 45a is in the state shown in FIG. In this embodiment, the sub-cylinder 42 is operated slightly later than the timing at which the cylindrical film 92 is sandwiched and sealed between the upper sealer 43a and the upper sealer sub-portion 43b. The sub rod 42a extends, and the cutter 45a cuts slightly above the portion where the sealing is completed by the upper sealer 43a as shown in FIG. The cutting edge of the cutter 45a enters a slit having a space between the upper sealer sub-portion 43b and the leaf spring press sub-portion 41b. The cutter 45a has substantially the same horizontal length as the substrate 40c of FIG. 2, and can cleanly cut the cylindrical film 92 fed downward. By this transverse cut, the tubular film 92 becomes a tubular cut film 93, and a packaging bag having a lower end opening in which the upper end portion of the tubular cut film 93 is sealed by the upper sealer means 43 is completed. Reference numeral 93a denotes an upper seal portion.

  The stripper means 47 includes a main cylinder 40, a base plate 40c, a sub cylinder 46, a stripper 47a, a stripper synchronization cylinder 49, and a stripper sub-portion 47b. The protruding member of the stripper 47a is fixed to the rod tip of the sub cylinder 46 attached to the substrate 40c. The degree of protrusion of the stripper 47a toward the center of the base is slightly smaller than that of the upper sealer 43a as shown in FIG. On the other hand, the protruding member of the stripper sub-portion 47b is attached to the tip of the rod 49a of the synchronizing cylinder 49 that moves forward and backward in synchronization with the forward and backward movement of the sub cylinder 46. The stripper 47a and the stripper sub-portion 47b are disposed so as to face each other at a lower point than the upper sealer 43a and an upper point than the article W to be packaged held by the support 61. Together with the operation of the main cylinder 40 and the synchronization cylinder 48 or slightly behind, the sub cylinder 46 and the synchronization cylinder 49 are operated to sandwich the cylindrical cut film 93 immediately below the seal portion as shown in FIG. Then, after forming the upper seal portion 93a, the rods 46a and 49a of the sub cylinder 46 and the synchronization cylinder 49 are retracted later than the retraction of the rods 40a and 48a of the main cylinder 40 and the synchronization cylinder 48. This is to prevent the heat-sealed cylindrical cut film 93 from adhering to the upper sealer 43a.

  The lower seal mechanism 5 includes sponge pressing means 51 and lower sealer means 53. These are disposed in order toward the lower side at a position below the feed roller 12 and at a lower point than the article W to be packaged supported by the cradle 30. The tubular film 92 is formed into a tubular cut film 93 having a size that allows the packaged object W to be packed by the cutting means 45, and the upper cylindrical opening of the tubular cut film 93 is sealed by the upper sealer means 43. The lower end of the bag is sealed by the lower-stage sealing mechanism 5 in the next step, and the bag becomes a packaging bag in which the articles to be packaged W are packed.

The sponge pressing means 51 includes a sponge pressing cylinder 50 and a sponge pressing 51a. In Figure 1, relative to the frame _{F 8} depending from the right column _{F 5} side of the frame _{F 3,} also to be frame _{F 8} depending from the left column _{F 6} side of the frame _{F 4} in FIG. 1, the sponge presser cylinder 50 Mounted to face. The protruding members of the sponge pressers 51a and 51b made of an elastic body are fixed to the tips of the rods 50a of both cylinders 50A and 50B. Both sponge pressers 51 are disposed opposite to each other at a point below the support 61 with a tubular film 92 fed downward. The length of the sponge retainer 51a exceeds the transverse length of the tubular film 92 (FIG. 2).
The sponge pressing means 51 operates after the operation of the upper seal mechanism 4 is completed. Due to the extension of the rods 50a of both cylinders 50, the lower cylindrical port of the cylindrical film 92 or the cylindrical cut film 93 is closed (FIG. 8).
By the upper seal mechanism 4, a packaging bag having a lower end opening in which the upper end portion of the cylindrical cut film 93 is sealed is completed, and the article to be packaged W is arranged in the cylindrical space S. The sponge presser 51a is the article to be packaged. The lower cylinder opening of the cylindrical cut film 93 near the W is closed. This is for facilitating the lower seal at the lower end opening.

The lower sealer means 53 includes a lower sealer cylinder 52 and a lower sealer 53a. In FIG. 1, lower sealer cylinders 52 </ b> A and 52 </ b> B are mounted on a frame F ₈ hanging from a frame F ₃ near the right column F _{5 and on} a frame F ₉ hanging from a frame F ₄ near the left column F _{6 in} FIG. It is attached so as to face each other. The lower sealer 53a is fixed to the tip of one rod 52a of both cylinders 52A and 52B, while the lower sealer sub-portion 53b is fixed to the tip of the other rod 52b. A lower sealer 53a and a lower sealer sub-portion 53b, which are impulse sealers, are disposed opposite each other at a point below the sponge presser 51a with a cylindrical film 92 fed downward. The length of the lower sealer 53a and the lower sealer sub-portion 53b exceeds the transverse length of the tubular film 92 (FIG. 2).
The lower sealer means 53 operates following the operation of the sponge pressing means 51. By extending the rods 52a and 52b of both cylinders 52A and 52B, the vicinity of the bottom end of the cylindrical film 92 or the cylindrical cut film 93 is sealed (FIG. 9). Reference numeral 93 denotes a seal portion by the lower sealer 53a. By this sealing, the packaging of the article W to be packaged using the tubular film 92 is completed.

The present embodiment further includes a heel-stretching means 56 and an air bleeding nozzle 57. The heel-stretching means 56 includes a heel-stretching cylinder 54 and a heel-stretching rod 56a, and a pair thereof is provided.
The heel-stretching means 56 is opposed to the lower end opening of the tubular film 92 at a position below the lower sealer 53a, and is moved up and down and left and right to move up and down, thereby being sealed by the upper sealer 43a and by the cutter 45a. This is a device provided with a heel-stretching rod 56a whose tip is arranged in the cylinder of the cut cylindrical cut film 93.
Here, the heel-stretching cylinder 55 is fixed to the base frame F ₇ of the base F shown in FIG. 2, and the vertical cylinder 54 is fixed to the tip of the cylinder 55 extending and contracting in the horizontal direction. A heel-stretching rod 56a is attached in a standing state to the tip of a rod that expands and contracts in the vertical direction of the vertical cylinder 54. The rods 54a and 55a of the respective cylinders 54 and 55 are in a contracted state, and the rod ends of the two stretching rods 56a are close to the left end and the right end in the lower end cylindrical opening over the cylindrical film 92 in a side view as shown in FIG. It is arranged in a posture that points to the close part.
Then, before the sponge pressing means 51 is actuated, the rod 54a of the vertical cylinder 54 is first extended, and the double-rod extending rod 56a advances from the lower end cylindrical opening of the cylindrical cut film 93 into the cylinder (FIG. 7). Thereafter, as shown by the arrows in FIG. 2, the kneading cylinder 55 extends in the horizontal outward direction, and pushes the lower end portion of the cylindrical cut film 93 in both outward directions. After securing this state, the sponge pressing means 51 is set to operate. Then, before the lower sealer means 43 is actuated, the heel-stretching rod 56a is set so as to retract from the cylinder of the cylindrical cut film 93.

As shown in FIG. 2, the air bleed nozzle 57 is provided with a guide lane 58 that runs in the vertical direction at the center lower part of the base F, and the air bleed nozzle 57 is attached to the guide lane via a fixture 57a. The air bleeding nozzle 57 is disposed so that the tip thereof is sealed by the upper sealer 43a and is directed to the center of the tubular opening of the tubular cut film 93 cut by the cutter 45a.
Then, before the operation of the sponge pressing means 51, the air bleeding nozzle 57 moves upward so that the tip 571 reaches the height position (or higher position) of the sponge pressing 51a (FIG. 7). Thereafter, the sponge pressing means 51 is operated, and the air vent nozzle 57 is operated in a state where the lower end cylinder port is closed, and the residual air ε present in the cylinder of the cylindrical cut film 93 is sucked (FIG. 8). The air bleeding nozzle 57 lowers the air after sucking the remaining air. Thereafter, the lower cylindrical opening of the tubular cut film 93 into which the article to be packaged W is inserted is sealed with the lower sealer means 53, whereby the desired packaged article W is packaged and packaged using the cylindrical film 92 as shown in FIG. Is completed. The completed bag-packed package product is conveyed by a belt conveyor (not shown) provided on the right side of FIG.
The above-described series of operations is performed by sequence control or personal computer control, and automatic packaging products in which packages W are packed in bags are continuously produced using the film roll 91 of the tubular film 92. Reference symbol K indicates a control panel for performing the above-described series of operations.

Next, one packaging method by the bag filling and packaging machine having the above configuration will be described.
First, the motor 13 is driven to feed the cylindrical film 92 to the vicinity of the lower end of the leaf spring portion 2c by the feed roller 12. Next, the cradle 30 on which the article to be packaged W is placed is transferred directly below the tube opening of the tubular film lower end 92e. Subsequently, the feed roller 12 is activated to feed the tubular film 92 downward. The lower end of the cylindrical film 92 is fed out to a position lower than the height position of the lower sealer 53a as shown in FIG.
Thereafter, the receiving tool 61 is operated to receive and support the article W to be packaged placed on the receiving table 30 as shown in FIG. Next, the cradle 30 is lowered.

After such a state is ensured, the upper seal mechanism 4 operates. First, the main cylinder 40 and the sub-cylinder 48 are operated, the plate spring pressing means 41 is operated, and the plate spring expanding portion 23 is closed. The upper sealer means 43 works to seal the upper part near the package W. Before and after the operation of the main cylinder 40, the stripper means 47 works, and the cylindrical film 92 is sandwiched between the stripper 47a and the stripper sub-portion 47b. Subsequently, the sub cylinder 42 is operated, and the cutter 45 cuts a portion of the tubular film 92 slightly above the seal portion 93 a formed by the upper sealer means 43. As described above, the cylindrical film 92 covering the article W to be packaged becomes a cylindrical cut film, and the upper seal portion 93a is provided on the upper portion thereof.
Thereafter, in the upper seal mechanism 4, the cutter 45a, the leaf spring presser 41a, and the upper sealer 43a are retracted, and then the stripper 47a is retracted.

After the upper seal mechanism 4 is finished, the lower seal mechanism 5 is activated. First, the heel-stretching means 56 is actuated, and the heel-stretching rod 56a enters the cylinder from the lower end cylinder opening of the cylindrical cut film 93. The air bleeding nozzle 57 also enters the cylinder from the lower end cylinder opening of the cylindrical cut film 93. After the cylinder rod 55a extends and the heel-stretching rod 56a pushes and spreads the lower part of the cylindrical cut film 93 as shown by the arrow in FIG. 2, the sponge pressing means 51 is activated. The lower part of the cylindrical cut film 93 is sandwiched between the sponge retainer 51a and the sponge retainer sub-part 51b. Thereafter, the heel-stretching rod 56a descends. The air release nozzle 57 sucks and removes the remaining air ε in the cylindrical cut film 93. Then, the air bleeding nozzle descends. Thereafter, the cylinder 52 of the lower sealer means 53 is operated to seal the lower portion of the cylindrical cut film 93 with the lower sealer 53a and the lower sealer sub-portion 53b. Thus, the packaged product W covered with the cylindrical cut film 93 and packaged with the upper seal portion 93a and the lower seal portion 93b is completed. The packaged bag-packed product is received and supported by the receiving table 30 from the receiving support of the receiving device 61, and is placed on a conveyance belt (not shown) on the right side of FIG.
The above-described series of operations is sequentially repeated, and the automatic packing of the packaging object W using the tubular film 92 is smoothly performed.

The bag filling and packaging machine configured as described above includes the receiving roller 11 and the hanger 2 disposed in the tubular film 92, and passes through the hanger 2 even when the film roll 91 of the tubular film 92 is used. As a result, the tubular opening of the tubular film 92 is widened, so that the article to be packaged W can be easily inserted using the tubular opening.
And if the leaf | plate spring part 2c extended from the constriction part 2b of the hanger 2 expands below, the cylindrical film 92 after passing the leaf | plate spring part 2c will open a cylinder opening large, Therefore Three-dimensional shape Even a large three-dimensional object W can be packaged and packed without difficulty. Moreover, the hanger 2 is hung in a state where the engaging portion 2a is supported by the receiving roller 11, the constricted portion 2b and the leaf spring portion 2c pass between the receiving rollers 11, and the leaf spring portion 2c expands downward. Therefore, the structure is simple and well balanced, and the operation stability of automatic packaging is excellent. In addition, since the first roller 11a is provided in the engaging portion 2a, and the first roller 11a is placed on the receiving roller 11, the hanger 2 can be smoothly wrapped with little resistance.

Since the upper sealer 43a and the lower sealer 53a are advanced and retracted to advance and sandwich and seal the tubular film 92, it is possible to easily and surely package seal. Further, since the cutter 45a advances and retreats and advances to cut the cylindrical film 92, the cylindrical cut film 93 for individual packaging of the articles W to be packaged can be easily made from the cylindrical film 92 by making a simple structure. it can.
Further, when the leaf spring pressing means 41 is provided to press the leaf spring portion 2c with the leaf spring presser 41a in the closing direction against the expanding spring pressure, the tubular film 92 on the upper side of the article W to be packaged is provided. When sealing, prior to this, the cylindrical opening of the cylindrical film 92 can be closed, so that the sealing can be carried out smoothly and reliably.
Further, by providing the transfer means 3 and the receiving means 6 as the cylindrical film 92 that is fed downward by the intermittent movement by the feed roller 12, insertion of the article W to be packaged can be carried out smoothly.

In addition, a pair of receiving rollers 11, a hanger 2, and a feed roller 12 are arranged on the upper portion of the base F so that the cylindrical film 92 is fed out intermittently by the feed roller. Since the transfer means 3 is provided so that the article W to be packaged placed on the cradle 30 is inserted into the cylindrical space S from the lower end cylindrical opening of the film-like film 92, the equipment can be space-saving and compact. . By providing the leaf spring pressing means 41, further downsizing and quality improvement can be achieved.
Furthermore, the provision of the heel-stretching means 56 and the air bleeding nozzle 57 is very useful because it exhibits a number of excellent effects such as further improving the quality.

  The present invention is not limited to those shown in the above-described embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, number, material, and the like of the receiving roller 11, the feeding roller 12, the hanger 2, the transfer means 3, the upper seal mechanism 4, the lower seal mechanism 5 and the like can be appropriately selected according to the application.

It is one form of the bag-packing and packaging machine of the present invention, and is a schematic front view thereof. It is the schematic right view of FIG. 1 which added the figure around a ridge extending means and an air bleeding nozzle. (B) is a front view of (A), and (C) is a right side view of (B). FIG. 2 is an enlarged view around the upper seal mechanism in FIG. 1, and is a state diagram before operation. FIG. 5 is an explanatory diagram of a state in which a main cylinder and a synchronous cylinder are operated from the state of FIG. 4. It is state explanatory drawing which further formed the upper seal part with the upper sealer from the state of FIG. 5, and cut | disconnected the cylindrical film with the cutter. FIG. 6 is a side view of the periphery of the heel stretching means and the air bleeding nozzle. It is an enlarged view around the lower seal mechanism, and is a state diagram in which a tubular cut film is sandwiched by a sponge pressing means. FIG. 9 is a state diagram in which the process further proceeds from the state of FIG. 8 and the cylindrical cut film is sealed with a lower sealer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Receiving roller 2 Suspension tool 2a Engagement part 2b Constriction part 2c Leaf spring part 3 Transfer means 41 Leaf spring press means 41a Leaf spring presser 43a Upper sealer 45a Cutter 53a Lower sealer 56a Stretching stretcher 6 Receptacle means 92 Cylindrical film S Cylindrical space W Package

Claims (3)

A pair of receiving rollers disposed facing each other so as to sandwich the cylindrical film fed downward from the outside;
An upper engaging portion is received and supported by the receiving roller, and a constricted portion extending downward from the engaging portion passes between the pair of receiving rollers. A suspension member suspended from the receiving roller in such a manner that the leaf spring portion extending from the opening expands downward,
An article to be packaged placed on the cradle is inserted into the tubular space from the bottom end of the tubular film that has a pedestal that can be moved up and down and is drawn downward from the plate spring part that expands. Transport means adapted to be
Receiving means for holding the article to be packaged inserted into the tubular space via the tubular film by advancing and retracting the receiving tool forward and backward on the outside of the tubular film;
The outer side of the tubular film is located at a lower point than the leaf spring part and at an upper point than the article to be packaged held by the receiving means, and moves forward and backward to advance. An upper sealer that sandwiches and seals a tubular film;
A lower sealer that is disposed outside the tubular film at a point below the article to be packaged held by the receiving means, and moves forward and backward so that the tubular film is sandwiched and sealed. A bagging and packaging machine comprising: A leaf spring pressing means disposed outside the tubular film at a height point of the leaf spring portion and pressing the leaf spring portion with a leaf spring presser in a direction to close against the expanding spring pressure;
A cutter that is disposed outside the tubular film at a point below the leaf spring presser and above the upper sealer, and cuts the tubular film by moving forward and backward. The bagging and packaging machine according to claim 1, further comprising: A cylindrical cut that is sealed by the upper sealer and cut by the cutter by moving upward and downward, left and right, facing the lower end opening of the cylindrical film at a point below the lower sealer. The bagging and packaging machine according to claim 1 or 2, further comprising a stretcher bar having a tip disposed in the cylinder of the film.

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