JP5126927B2 - Horizontal pillow packaging machine - Google Patents

Description

  The present invention relates to a horizontal pillow packaging machine.

  The horizontal pillow packaging machine has the following configuration. First, the strip-shaped film wound up by the raw fabric roll is continuously supplied to the bag making device, and when the bag making device is passed, the tubular film formed into a tubular shape is formed. In addition, an article transporting and supplying device is arranged on the upstream side of the bag making device, and an object to be packaged conveyed at predetermined intervals from the object to be packaged conveying and supplying device is supplied into the bag making device. As a result, when the article to be packaged passes through the bag making machine, it is stored in the cylindrical film at predetermined intervals, and the article to be packaged is conveyed in the horizontal direction together with the cylindrical film. A center seal device and an end seal device are arranged along the conveying direction. The center seal device seals the film polymerization end of the tubular film. The end seal device includes a top sealer disposed with a tubular film interposed therebetween, and the top sealer sandwiches the tubular film in the lateral direction of travel (the portion where the front and rear packages are not present) and heats it.・ Pressurize to heat seal and cut the end seal with the built-in cutter. Thereby, the part of the cylindrical film in which the article to be packaged at the tip is stored is separated from the subsequent cylindrical film, and the package is manufactured.

  In such a horizontal pillow packaging machine, there is a problem of biting of an object to be packaged in the end seal device. That is, as a result of shifting the timing of supplying the packaged article to the cylindrical film, or moving the packaged article relative to the cylindrical film while transporting the packaged article together with the cylindrical film, FIG. As shown, the article to be packaged 1 may be located at the seal portion 3a of the tubular film 3 in the end seal device 2. Then, when the pair of top sealers 2a sandwich the tubular film 3 and perform the sealing process, a situation occurs in which the article to be packaged 1 is also sandwiched together. Then, since it becomes an abnormal state, it is necessary to temporarily stop the horizontal pillow packaging machine and perform a predetermined restoration work, and there is a possibility of failure of the end seal device. The shorter the distance between the front and back of the package, the higher the probability of such a problem.

  In order to avoid the occurrence of such a problem, for example, as disclosed in Patent Document 1, there is an invention of a biting prevention method using an iron plate. Although it is not a prevention method for biting, it is judged whether or not there is an article to be packaged at the end seal part by a sensor arranged in the end seal device, and if it exists, the horizontal pillow packaging machine is temporarily stopped. By doing so, there are some that prevent the occurrence of biting (see Patent Document 2, etc.).

In addition, although the packaged product itself is not bitten, for example, when the packaged product is dry noodles such as instant noodles, the packaged product is being transported as shown in FIG. The so-called small noodle residue 1a separated from 1 may fall, and the noodle residue 1a may be bitten by the top sealer. In such a case, the noodle residue may be small, and the horizontal pillow packaging machine continues to operate without being temporarily stopped. However, the packaging body in which noodle residue (foreign matter) is present at the end seal portion needs to be excluded as a defective product. Therefore, an inspection by an inspector may be performed by visual inspection, or automatic inspection may be performed using an apparatus as shown in Patent Document 3. In the invention disclosed in Patent Document 3, the end seal portion is imaged by a camera to detect whether there is a foreign object, and when the foreign object is detected, the package is excluded from the product conveyance path. It is configured as follows.
Japanese Patent Laid-Open No. 9-12003 JP-A-8-91309 JP 2003-246307 A

  However, in the configuration as disclosed in Patent Document 1 described above, the apparatus provided with the ironing plate must be arranged in the vicinity of the end seal device, and the apparatus becomes complicated. Space for scraping is required, and the apparatus becomes large. Furthermore, the usage amount of the packaging film is increased, and there is a new problem that the size per unit package after packaging is significantly larger than the packaged object.

  Further, the configuration disclosed in Patent Document 2 is effective for detecting the occurrence of biting in advance, but the end seal device is provided with two contact displacement sensors, which complicates the device. Further, when the abnormality is detected, the horizontal pillow packaging machine is stopped, so that an operation for restoring to a normal state is required. Therefore, there is a problem that the operation of the operator who operates the horizontal pillow packaging machine becomes complicated and the production efficiency is lowered.

  On the other hand, since the apparatus disclosed in Patent Document 3 can accurately determine the biting process, it can prevent defective products from being shipped accidentally, but the apparatus is expensive, such as installing a camera. End up. Although defective products can be detected, it is impossible to prevent the occurrence of defective products such as mixing of noodle residue into the end seal portion.

  The present invention can prevent small foreign matter such as so-called noodle residue and biting of a package with a simple configuration, and can be used per package by shortening the supply interval of the package. It aims at providing the horizontal pillow packaging machine which can reduce the usage-amount of the film to do.

In order to achieve the above-described object, the horizontal pillow wrapping machine according to the present invention has a means for forming a continuously supplied belt-like film into a cylindrical shape, and a polymerization end of the cylindrical film formed in the cylindrical shape. A center seal device for performing sealing, and an upper top sealer and a lower top sealer that are disposed on the downstream side of the center seal device and disposed above and below the tubular film, A horizontal pillow packaging machine provided with an end seal device that seals in a direction, the end seal device being configured to hold a state in which the upper top sealer and the lower top sealer face each other with their sealing surfaces facing each other. The predetermined trajectory is such that when the sealing surfaces of the upper top sealer and the lower top sealer sandwich the cylindrical fill, the predetermined trajectory The upper top sealer and the lower top sealer move forward at the same speed as the cylindrical film, and then the upper top sealer and the lower top sealer move backward away from the cylindrical film. The opposing surfaces to be the sealing surfaces of the upper top sealer and the lower top sealer are shaped to rise from the front and rear sides in the traveling direction toward the central portion, and the upper top sealer and When the lower top sealer meshes and the cylindrical film is sandwiched and sealed by the sealing surface, the central portion of the lower top sealer pushes the cylindrical film upward.

  Preferably, the lower top sealer is configured to start contacting the tubular film before the upper top sealer. In this case, the upper top sealer and the lower top sealer are preferably configured to move up and down by independent drive mechanisms.

  For example, when the movement trajectory of the top sealer is controlled by a cam, the shape of the cam of each top sealer is made different so that the lower top is operated while being operated by one drive source (motor). The sealer can be configured to begin contacting the tubular film first.

  In the present invention, the sealing surface of the top sealer is formed so as to rise from both the front and rear sides in the traveling direction toward the central portion, and when the pair of top sealers are engaged and sandwich the tubular film, the central portion For example, in the packaging of dry noodles, even if foreign matter such as noodle residue is present at the end seal part (scheduled part), the noodle residue is ended at the time of sealing. Since it pushes right and left separately from the seal part, it is possible to prevent biting of noodle residue and the like. In addition, even if the packaged item itself reaches the end seal part due to misalignment, and the top sealer of the sealing surface made of a conventional horizontal surface has bite the packaged item, The top sealer pushes the package to the retreat area where it is not sandwiched between the sealing surfaces, and as a result, it is pushed away from the top and bottom top sealers. be able to.

  In the present invention, the sealing surface of the top sealer itself has the effect of scraping the packaged object / foreign matter, so that the structure is simple and the size can be reduced. Furthermore, coupled with the fact that the width of the top sealer can be reduced, the distance between the items to be packaged can be made relatively short, and a relatively tight package can be obtained. As a result, the amount of film used per package to be packaged can be reduced, and the overall cost for the film can be reduced. Furthermore, by reducing the occurrence of biting, it is possible to reduce the production loss due to the stoppage of the packaging machine during production and the decrease in the negative stay due to the production of defective products.

  FIG. 2 shows a preferred embodiment of the present invention. The horizontal pillow packaging machine 10 according to the present embodiment includes a packaging machine body 11, a film supply device 12 that continuously supplies a belt-like packaging film to the packaging machine body 11, and an upstream side of the packaging machine body 11. A packaged article transport and supply device 14 that is arranged and supplies the packaged article 13 to the packaging machine body 11 at predetermined intervals is provided.

The film supply device 12 links the output of a drive motor (not shown) (speed-controllable motor such as a servo motor) to the original roll 16 obtained by winding the belt-like film 15 into a roll. Supplying to the packaging machine body 11 at a constant speed while appropriately controlling the rotation speed. Various rollers 22 are arranged at predetermined positions from the original fabric roll 16 to the packaging machine body 11, and the belt-like film 15 fed out from the original fabric roll 16 is passed over the rollers 22 , thereby providing a predetermined path. It is guided to the packaging machine main body 11 through. Of course, in the present invention, it is not always necessary to link the drive motor to the raw roll 16, and a feed roller may be provided on the transport path of the packaging film and pulled out.

  The package transporting and supplying device 14 includes a sprocket 17 (only the front in the traveling direction is shown in the figure) arranged at the front and rear, an endless chain 18 spanned over the plurality of sprockets 17, and a predetermined pitch on the endless chain 18. It is comprised by the several pushing finger | toe 19 attached for every. Thereby, when the pushing finger 19 hits the rear surface of the article 13 to be packaged, the article 13 also moves forward with the movement of the pushing finger 19.

  The packaging machine main body 11 includes a bag making device 20 for making the supplied belt-like film 15 into a tubular film 21, and both side edge portions of the polymerized belt-like film 15 disposed on the downstream side of the bag making device 20. A pinch roller 23 composed of a pair of rollers that pinch 15a from both sides to give a conveying force; a center seal device 24 that is arranged on the downstream side of the pinch roller 23 and seals both side edges 15a; and the center seal device 24, a conveyor belt 25 disposed downstream of the conveyor belt 24, an upper restraining belt 26 disposed above the conveyor belt 25, an end seal device 30 disposed downstream of the conveyor belt 25, and an end seal device 30 An unloading conveyor 27 is provided on the downstream side. In this embodiment, the center seal device 24 is composed of a pair of left and right heating rollers, and heat-seals the heating rollers while applying a predetermined pressure to the side edge portions 15a.

The bag-making device 20 allows the side film edges 15a of the belt-like film 15 to contact (polymerize) with each other by passing the belt-like film 15 continuously supplied from the film feeding device 12, and the tube that has become cylindrical. Bag-like film 21 is made. In addition, the articles to be packaged 13 that are sequentially supplied from the article to be packaged supply apparatus 14 to the packaging machine main body 11 are inserted into the bag making machine 20. Thereby, the article 13 to be packaged supplied to the bag making machine 20 is arranged in the cylindrical film 21 at predetermined intervals. In addition, since the article to be packaged 13 is included in the cylindrical film 21 as described above, the transport conveyor 25 conveys the cylindrical film 21 including the article to be packaged 13.

  The upper restraining belt 26 is disposed in the immediate vicinity of the upstream side of the end seal device 30 and suppresses the article 13 in the tubular film 21 from being lifted upward so that it can be conveyed while maintaining a horizontal state. ing.

  The end seal device 30 seals and cuts the tubular film 21 in a direction orthogonal to the traveling direction, that is, in a transverse direction. The film part to be sealed / cut is a predetermined position between the front and back objects 13 to be packaged. Thereby, by passing through the end seal device 30, the leading portion of the tubular film 21 is separated from the subsequent portion, and the package 28 is manufactured.

The end seal device 30 includes a pair of top sealers 31 and 32 that are vertically opposed to each other with the tubular film 21 interposed therebetween, and maintains a state in which the seal surfaces 31a and 32a of the top sealers 31 and 32 are opposed to each other. Each revolves around a predetermined trajectory. As a mechanism for revolving the top sealers 31 and 32 along a predetermined locus, a known mechanism called a box motion can be used. This box motion moves forward at the same speed as the tubular film 21 when the top sealers 31 and 32 mesh with each other and sandwich the tubular film 21, and then the top sealers 31 and 32 move from the tubular film 21. When it is separated, it repeats moving backward along a predetermined trajectory. Thus, a period of time, it is possible to reliably heat seal can be maintained for pressurizing and heating condition is sandwiched by the tubular film 12 both top sealer 31, Ru can be continuously moved tubular film. In addition, the carry-out conveyor 27, the transfer conveyor 25, and the like may move the front end on the end seal device 30 side in the front-rear direction in accordance with the forward and backward movement of the top sealers 31 and 32. For this technique, for example, a mechanism disclosed in Japanese Patent Laid-Open No. 9-286413 can be used.

  Here, in the present invention, the seal surfaces 31a and 32a of the pair of top sealers 31 and 32 are formed so as to rise from the front and rear sides in the traveling direction toward the central portion. More specifically, the seal surface 31a of the upper top sealer 31 has a shape in which the central part is recessed (the position of the central part is on the top) and has a substantially valley shape as a whole. The seal surface 32a of the top sealer 32 on the lower side protrudes upward as it goes to the central portion, and has a generally mountain shape as a whole. Both of the sealing surfaces 31a and 32a are inclined surfaces (sealing marks are formed), and the inclination angles of both the sealing surfaces 31a and 32a are coincident with each other and are formed so as to mate with each other.

Further, when the pair of top sealers 31 and 32 are engaged with each other and the tubular film 21 is sandwiched as shown by a two-dot chain line in FIG. 2 , the positions of the front and rear side edges in the traveling direction are the vertical direction of the tubular film 21. It is set so as to be located at an intermediate position. Thereby, since the center site | part of the top sealers 31 and 32 is located above the front-and-rear both-sides edge, the center site | part is comprised so that the cylindrical film 21 may be pushed up upwards.

  Although not shown, the central portion is provided with a cutter blade and a receiving blade, and the opposite portion of the tubular film 21 is cut with the blade. That is, the tip (vertex) portion sealed in a mountain shape is cut.

  3 and 4 are diagrams for explaining the operational effects of the present embodiment. For example, as shown in FIG. 3A, it is assumed that the item to be packaged 13 is dry noodles, and the noodle residue 13 a separated from the dry noodles is located at the end seal portion 21 a of the tubular film 21. When the pair of top sealers 31 and 32 approach each other in this state, the chevron-shaped sealing surface 32a of the lower top sealer 32 pushes up the tubular film 21, as shown in FIG. At this time, since the sealing surface 32a is inclined, the intermediate portion of the cylindrical film 32a is lifted upward along the inclined surface, and most of the area of the end sealing portion 31a is inclined. 13a slides down along the inclination and moves downward. As shown in FIG. 3C, when the top sealers 31 and 32 are finally engaged with each other and the tubular film 21 is sandwiched, the noodle residue 13a does not remain between the seal surfaces 31a and 32a. Only the tubular film 21 can be heated and pressurized to perform end-sealing treatment while preventing foreign matter (noodle residue 13a and the like) from entering.

  Further, as shown in FIG. 4 (a), even when the article 13 is not in the normal position in the tubular film 21 and reaches the end seal portion 21a, the objects shown in FIGS. 4 (b) and 4 (c) are used. As shown, the inclined surface of the seal surface 32a urges the package 13 in a direction away from the front and rear direction, and the top sealers 31 and 32 are finally engaged with each other by scraping. When sandwiched, the article 13 to be packaged does not exist between the seal surfaces 31a and 32a, and biting can be prevented.

  As is clear from comparison between FIGS. 5A and 5B, the seal surface 2a ′ formed of the horizontal surface of the conventional top sealer 2a and the seal surfaces 31a and 32a of the top sealers 31 and 32 of the present embodiment The width L of the end seal part (ear part) of the package needs to be substantially equal, but based on such premise, the width L1 of the conventional top sealer 2a and the top sealer 31 of the present embodiment, The width L2 of 32 has a relationship of L1> L2. Therefore, the width of the top sealer itself can be narrowed, and it can smoothly enter between the pitches of the packages. Furthermore, since the distance between the objects to be packaged can be shortened as compared with the conventional one, the cut pitch per package can be reduced, and the film to be used can be shortened.

  In addition, the upper and lower top sealers 31 and 32 start to contact the tubular film 21, but they may be in contact with each other at the same time, but preferably the lower top sealer 32 is made higher than the upper top sealer 31. Is configured to start to contact the tubular film 21 first. In order to achieve such a configuration, for example, the upper top sealer 31 and the lower top sealer 32 are configured to move up and down by independent drive mechanisms. For example, this can be realized by preparing two drive motors and controlling their operations by completely different drive systems.

Further, the sealing surfaces 31a and 32a are formed in the same manner as the normal top sealer, but the shape when the sealing eyes are removed is a flat surface (inclined surface) as shown in the figure. However, it may be a curved shape. In the case of bending, it is preferable that the sealing surface 32a of the lower top sealer 32 bulges outward, and the bending should be a gentle curved surface . Of course, if the central part is located above as a whole, it is not hindered that there are irregularities or the like in the middle.

It is a figure explaining the conventional problem. It is a front view showing a preferred embodiment of the present invention. It is a figure explaining the effect of this Embodiment. It is a figure explaining the effect of this Embodiment. It is a figure explaining the effect of this Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Horizontal pillow packaging machine 11 Packaging machine main body 12 Film supply apparatus 13 Packaged article 14 Packaged article conveyance supply apparatus 21 Cylindrical film 24 Center seal apparatus 30 End seal apparatus 31, 32 Top sealers 31a, 32a Seal surface

Claims (3)

Means for forming a continuous strip-like film into a cylindrical shape;
A center seal device that seals the polymerization end of the cylindrical film formed in the cylindrical shape;
An end seal device that is arranged on the downstream side of the center seal device and seals the tubular film in the width direction with an upper top sealer and a lower top sealer that are arranged above and below the tubular film. A horizontal pillow wrapping machine,
The end seal device is configured such that the upper top sealer and the lower top sealer revolve with a predetermined trajectory while maintaining a state in which the respective seal surfaces are opposed to each other. When the sealing surfaces of the upper top sealer and the lower top sealer sandwich the cylindrical fill, the upper top sealer and the lower top sealer move forward at the same speed as the cylindrical film, Thereafter, the upper top sealer and the lower top sealer are repeatedly moved backwards away from the tubular film,
The opposing surfaces that are the sealing surfaces of the upper top sealer and the lower top sealer are each shaped to rise from the front and rear sides in the traveling direction toward the central portion,
When the upper top sealer and the lower top sealer mesh with each other and the cylindrical film is sandwiched and sealed by the sealing surface, the central portion of the lower top sealer pushes the cylindrical film upward. A horizontal pillow wrapping machine configured as described above.   2. The horizontal pillow packaging machine according to claim 1, wherein the lower top sealer is configured to start contacting the tubular film before the upper top sealer.   The horizontal pillow packaging machine according to claim 2, wherein the upper top sealer and the lower top sealer are configured to move up and down by independent drive mechanisms.

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