JP2005206202A - Packaging method and packaging device for tubular package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging method and a packaging device for a tubular package for sealing using a synthetic resin linear material. <P>SOLUTION: In the course of the process of sealing and cutting film 5 with a sealing-and-cutting device 10, the device 10 is moved downward at the same speed as the film 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a packaging method in which a tubular film formed from a strip-shaped film is filled with a flowable and indeterminate food such as liquid or kneaded food, and is formed (manufactured) into a cylindrical package having a predetermined length. , Relating to packaging equipment.

  As a packaging form for foods having fluidity, such as liquid or kneaded foods such as pickles, cheeses, sausages, etc., the above food or its raw materials are contained in a tubular film in which the side ends of a belt-shaped synthetic resin film are laminated and fused. Cylindrical packaging bodies that are filled with an intermediate body and sealed at both ends of the film are widely known.

  The packaging operation of such a package is usually performed in a continuous process from the formation of the tubular film to the sealing. Specifically, while feeding out a belt-shaped synthetic resin film, the side ends are fused together to form a cylindrical film, and the cylindrical film is formed by continuously filling the cylindrical film with an article to be packaged. Then, the cylindrical body is squeezed from the outside at a predetermined interval to push the inner package, the cylindrical body is sealed with a sealing material at the displaced portion, and the film is cut. As the sealing material, an aluminum wire that is easy to ligate and does not rust has been used.

  This type of packaging method is automated. For example, Patent Documents 1 and 2 disclose a packaging device.

  In FIG. 11, the structure of an example of the automatic packaging apparatus of a cylindrical package is shown typically.

  This automatic packaging apparatus 101 forms (manufactures) a cylindrical package 102 filled with contents such as food, and includes a conveying apparatus 103, a cylindrical film forming apparatus 105, a filling apparatus 106, an ironing apparatus 107, a sealing apparatus. The main body 114 and the base 112 are provided with a stop / cut device 108, a control device 109, and the like.

  This automatic wrapping apparatus 101 feeds the belt-shaped film 110 fed out from the raw roll 30 to the folder 50 through a group of rollers, and at the folder 50, both edges of the belt-shaped film 110 are folded on the outer periphery of the supply pipe 60 to form a cylinder. At the same time, the overlapping portion is fused by the high frequency sealing device 51 to form a cylindrical film 120, and contents such as sausage raw material are supplied by the supply pump 61 to the inside that is in a state of hanging down on the outer periphery of the supply pipe 60. Then, the contents are squeezed by the squeezing device 107 to form a sealing region on the tubular film 120, the sealing region is sealed by the sealing and cutting device 108, the vicinity thereof is cut, and a predetermined shape is formed. The tubular package 102 is obtained.

  The filling device 106 includes a supply pump 61 provided on the upper portion of the main body 114 and its drive motor 62, and is supplied through a supply pipe 63 connected to the introduction side of the supply pump 61 when the pump is activated. A thing is discharged from the supply pipe 60 connected to the discharge side of the supply pump 61. The contents discharged from the supply pipe 60 are filled into the cylindrical film 120 that wraps around the outer periphery of the supply pipe 60.

  The cylindrical film forming apparatus 105 includes a folder 50 provided at the upper part of the supply pipe 60 and a high-frequency sealing apparatus 51 provided to face the supply pipe 60.

  The transport device 103 includes a pair of feed rolls 31 provided below the supply pipe 60 and a drive motor 32 that rotationally drives the feed rolls 31, and transports the cylindrical film 120 sandwiched between the feed rolls 31. It has become. By this conveying device 103, the belt-like film 110 wound up and accommodated in the original fabric roll 30 is continuously drawn out to a predetermined path through a group of rollers.

  The ironing device 107 includes a pair of pinch rollers 70 provided below the feed rolls 31 and 31, and a pinch device 71 that moves the pinch roller 70 forward and backward with respect to the tubular film 120. By repeating the operation of pinching the cylindrical film 120 filled with the contents with the pinch roller 70 at a predetermined period, the predetermined part of the cylindrical film 120 filled with the contents is squeezed, and the area where the contents are separated is obtained. It is to be formed. The pinch roller 70 is connected to the drive motor 32 and rotates in synchronization with the travel of the tubular film 120.

  The sealing / cutting device 108 is built in a sealed box 80 disposed below the ironing device 107. The sealing and cutting device 108 is driven by a driving motor 84 provided in the base 112 through a rotating shaft 83, and the area in which the cylindrical film 120 filled with contents is scraped by the squeezing device 107. The upper and lower two places are sealed at intervals, and the middle part of the sealing part is cut. When the rotary shaft 83 is rotated by the drive motor 84, the sealing and cutting device 108 is reciprocated with respect to the tubular film 120 by a crank mechanism provided at the upper end portion of the rotary shaft 83. Sealing is usually performed by ligation with a metal clip, and the separated package 102 is dropped and discharged from the apparatus.

  The sealed box 80 is supported by a rod 81 protruding from the base 112 below the main body 114, and is lifted and lowered by the rod 81 being advanced and retracted by the lifting mechanism 82 in the base 112. . A drive motor 84 is connected to the input side of the elevating mechanism 82, and the elevating mechanism 82 is driven by the drive motor 84.

  The control device 109 is arranged on the side of the main body 114, and is tuned to operate each part of the transport device 103, the cylindrical film forming device 105, the filling device 106, the ironing device 107, the sealing cutting device 108, etc. sequentially and sequentially. Control is performed.

Japanese Patent Laid-Open No. 3-148431 Japanese Patent Laid-Open No. 62-16311

  The conventional cylindrical package sealing and cutting device 108 moves up and down, and ligates and cuts the film while descending along the cylindrical film 120. Conventionally, an aluminum wire is mainly used for sealing a cylindrical package, and therefore a ligation step and a cutting step following the ligation step are performed instantaneously. Accordingly, the time for the sealing and cutting device 108 to contact the film 120 is substantially instantaneous. FIG. 12 is a view of the movement path of the sealing / cutting device 108 as viewed from the side of the apparatus, and is the movement path of the front end of the apparatus that directly contacts the film 120. As shown in FIG. 12, the pair of sealing and cutting devices 108 approach the film 120 while descending, and the ligation and cutting process is performed at the moment when the film 120 comes into contact with the film 120, and immediately leaves the film 120 and rises again.

  On the other hand, the present inventors have examined a sealing method that does not use a metal member such as an aluminum wire in order to facilitate the detection of metal contaminants in the cylindrical package by a metal detector, and uses a synthetic resin wire. It came to the sealing method used.

  The objective of this invention is providing the packaging method of the cylindrical package using the sealing method using the said synthetic resin wire, and is providing the automatic packaging apparatus which enforces this packaging method.

The first of the present invention is a method for packaging a cylindrical package formed by sealing both ends of a cylindrical film filled with an article to be packaged,
While continuously feeding the strip-shaped synthetic resin film, the side edges of the film are overlapped and fused to form a cylindrical film continuously, and the cylindrical film is continuously filled with the objects to be packaged To form a cylindrical body, continuously squeezing the cylindrical body from the outside at a predetermined interval to push the inner package, and at the same speed as the film while contacting the film during the sealing and cutting process. By the sealing cutting means that moves, the film in the pushed area is converged, and two places are sealed at a predetermined interval in the converging part, and the film is cut at the center of the two sealing parts, It is a packaging method of a cylindrical package characterized by obtaining a cylindrical package.

The second aspect of the present invention is a packaging device for a cylindrical package formed by sealing both ends of a cylindrical film filled with an article to be packaged,
Means for continuously feeding a belt-shaped synthetic resin film;
Means for continuously forming a tubular film by overlapping and fusing side edges of the film;
Means for continuously filling an object to be packaged in the tubular film to form a tubular body;
Means for continuously squeezing the cylindrical body from the outside at a predetermined interval to push the inner package;
A means for converging the film in a region where the article to be packaged is pushed, a means for sealing two places at a predetermined interval in the converging part, and a means for cutting the film at the center of the two sealing parts. Sealing cutting means;
Driving means for moving the sealing cutting means at the same speed as the film while contacting the film during the sealing cutting step;
A packaging device characterized by comprising at least

In the packaging apparatus of the said invention, the following structure is included as a preferable aspect.
The means for sealing at the converging part of the film is a means for sealing the end parts of the wire by ultrasonic welding by sandwiching the converged film with a synthetic resin wire.
When the driving means moves the means for ultrasonically fusing the synthetic resin wire in the direction opposite to the film traveling direction for the next sealing, the driving means is moved at a faster speed than the film sealing. A return mechanism is provided.
The film cutting means is means for ultrasonically cutting the film.
The drive means of the sealing cutting means includes a drive motor and an indexer that converts the rotational motion of the drive motor into a reciprocating motion on an arc of a predetermined angle.
The drive means of the sealing cutting means includes a servo motor and a crank that converts the rotational motion of the servo motor into a vertical motion.

  According to the present invention, since the sealing and cutting means moves at the same speed as the film during the period required for the sealing and cutting process, there is no need to reduce the packaging speed by the process, and the sealing and cutting means that contacts the film. This prevents the film from being pulled or hindered from descending, so that there is no risk of packaging failure. Therefore, according to the present invention, it is possible to provide a packaging method and a packaging apparatus that can easily detect metal contaminants without reducing the packaging efficiency in conventional automatic packaging, and to provide a highly reliable cylindrical package. it can.

  A characteristic of the packaging method and the packaging apparatus of the present invention is that the packaging apparatus includes a driving means for moving the sealing cutting means of the film at a speed equal to that of the film, and the sealing cutting means contacts the film and In the cutting and sealing step of converging, sealing and cutting the film, the driving means moves the cutting and sealing means at a speed equal to the moving (lowering) speed of the film. The basic configuration of the apparatus other than the sealing and cutting apparatus and its drive system is the same as that of the conventional automatic packaging apparatus shown in FIG. Since the film normally descends at a constant speed, the drive system of the sealing / cutting apparatus has a function of moving the sealing / cutting apparatus at a predetermined constant speed.

  In the present invention, as the sealing and cutting method, a means of sandwiching the converged film with a synthetic resin wire and sealing the end portions of the wire by ultrasonic welding is preferably used. In the sealing means, a certain amount of time is required to sufficiently melt and hold and fix the ultrasonic wave, and it cannot be performed instantaneously as in the ligation process using an aluminum wire. In addition, when the film is stopped during the ultrasonic fusion process, continuous packaging cannot be performed, and the packaging efficiency is lowered.

  In the present invention, since the sealing and cutting means contacts the film while moving at the same speed as the film during the sealing and cutting step, it is not necessary to stop or slow down the movement of the film for the step. In addition, since there is no relative difference in speed between the film and the sealing and cutting step, there is no risk of affecting the movement of the film due to the contact of the sealing and cutting means, and the movement of the film may be delayed or conversely pulled. There is no.

  Hereinafter, the present invention will be described in detail by taking as an example a method of ultrasonically fusing the above-described synthetic resin wire as a sealing cutting method.

  FIG. 1 shows a schematic diagram of a sealing and cutting device according to an embodiment of the packaging device of the present invention and its periphery. In the figure, 5 is a synthetic resin film, 7 is an article to be packaged, 10 is a sealing and cutting device (sealing and cutting means), 11a, 11b, 12a and 12b are focusing plates (focusing means), 13a and 13b are horns, 15a , 15b are anvils, 14a, 14b, 16a, 16b are synthetic resin wires, 17 is a cutting blade (cutting means), and 18 is an ultrasonic device.

  In FIG. 1, horns 13a and 13b, anvils 15a and 15b, and an ultrasonic device 18 are sealing means according to the present invention. Furthermore, the strip-shaped synthetic resin film according to the present invention is formed in the strip-shaped film 110 in FIG. 11, the means for forming the tubular film is formed in the tubular film forming apparatus 105, and the packaged material is filled into the tubular film to form the tubular film. The means for forming the body corresponds to the filling device 106, the means for squeezing the cylindrical body from the outside to push the article to be packaged, the ironing device 107, and the synthetic resin film feeding means correspond to the conveying device 103.

  FIG. 2 shows an enlarged perspective view of the converging plates 11a and 11b, the horn 13a, and the anvil 15a in the sealing and cutting apparatus 10 of FIG. The converging plates 11a and 11b are means for converging the film 5 in the region where the package 7 is pushed, and in this example, as shown in FIG. 2, the entrance is the widest and has an opening that becomes narrower toward the back. , 11a and 1b are arranged parallel to each other with the opening portions facing each other and shifted in the vertical direction. Therefore, by moving the film 5 forward toward each other so as to sandwich the film 5 from both sides, the film 5 can be focused into a narrowed state as shown in FIG. The focusing means is not limited to the form shown in FIG. 2, and any means having the same action can be used in the present invention.

  The film 5 thus converged is sandwiched between synthetic resin wires and sealed. In this example, an embodiment in which sealing is performed using two linear synthetic resin wires 14a and 14b is shown. As shown in FIG. 1, two horns 13a and 13b are attached to an ultrasonic device 18 as ultrasonic wave application means, and anvils 15a and 15b are provided to face the horns 13a and 13b, respectively. In this example, the horns 13a and 13b and the anvils 15a and 15b respectively serve as supply means for the synthetic resin wires 14a, 16a, 14b, and 16b.

  As shown in FIG. 2, the horn 13a and the anvil 15a have curved surfaces in contact with the wires 14a and 14b in the vertical direction so that the wires 14a and 14b can be easily held. Moreover, the center part of the direction parallel to the wire 14a, 14b is curving outside so that sufficient pressure may be applied to both ends of the wire.

  FIG. 4 shows a sealing process using the horn 13a and the anvil 15a. As shown in FIG. 4, linear synthetic resin wires 14a and 14b having a predetermined length are supplied in parallel and in such a way that the converged film 5 is sandwiched between the central portions (FIG. 4 (a)), and a horn 13a, Ultrasonic waves are applied to both ends of the wires 14a and 14b by the anvil 15a (FIG. 4 (b)), and are fused and integrated (FIG. 4 (c)). Note that the horn 13a and the anvil 15a are not limited to the shape shown in FIG. 4, and a form in which a pair of horns 13a and anvils 15a are provided corresponding to both ends of the wires 14a and 14b is preferably employed.

  In the form of FIG. 4, since the film 5 is sandwiched between the linear synthetic resin wires 14a and 14b, the thermal contraction force of the wires 14a and 14b under high-temperature sterilization after sealing is the center of the wires 14a and 14b. This is preferable because the film 5 works in the direction in which the film 5 is pressed from both sides, that is, in the direction of improving the sealing performance.

  In this sealing means, the same configuration as that in FIG. 2 is also arranged below the cutting blade 17, and both the horns 13 a and 13 b are attached to the ultrasonic device 18. By the means 10, sealing is performed at two places on the film 31 at the same time, and after sealing or simultaneously with sealing, the two sealing portions are cut by the cutting blade 17. Thereby, the cylindrical package body which sealed the both ends with the synthetic resin wire is obtained.

  In this example, the form of sealing using two synthetic resin wires is shown for one sealing portion. However, in the present invention, sealing may be performed using one synthetic resin wire. Is possible. FIG. 5 shows a sealing process according to this mode.

  As shown in FIG. 5, the synthetic resin wire 14 cut to a predetermined length is heated and softened, and is formed into a U shape using a forming die 19 (FIGS. 5A and 5B). Next, the converged film 5 is sandwiched in the U-shape of the U-shaped wire rod 14, and ultrasonic waves are applied by the horn 13 and the anvil 15 to be softened and brought into contact with each other to be fused (FIG. 5 ( c), (d)).

  In the present invention, the two linear synthetic resin wires 14a and 14b or the U-shaped synthetic resin wire 14 may be supplied in a U-shaped shape in advance. However, in the present invention, it is desirable to perform all the steps in the packaging apparatus of the present invention by providing the sealing / cutting means 10 with necessary means such as wire cutting means and molding means. That is, the synthetic resin wire is supplied to the packaging device of the present invention in a state of being wound in a reel shape, cut to a predetermined length, molded, and used for sealing.

  In the above-mentioned embodiment, although the form which ultrasonically welds the ends of a wire was shown, the film 5 is made of a material that can be ultrasonically fused with the wire, and by applying ultrasonic waves to the film 5, It is preferable to fuse the wire and the film 5 and, moreover, the films which are converged and overlapped with each other. This form is suitable for heating the cylindrical package because the wire is less likely to drop off from the cylindrical package after sealing and has high sealing performance.

  Moreover, although the example which used the cutting blade 17 as the cutting means of the film 5 was shown in FIG. 1, this invention is not limited to this, The fusing means by a heating and an ultrasonic wave is also used preferably.

  FIG. 6 shows a configuration example using ultrasonic fusing as the cutting means of the sealing cutting apparatus 10 in FIG.

  In this example, the converged film 5 is sealed by ultrasonic fusion at two locations with the synthetic resin wires 14a and 14b and 16a and 16b in the same manner as in FIGS. An ultrasonic wave is applied to melt, and the melted film 5 is fused and integrated in a focused state.

  The apparatus of this example includes an ultrasonic device 18 provided with a horn 13 and an anvil 15 facing the horn 13 as ultrasonic application means. In addition, on the surface of the anvil 15 facing the horn 13, a linear fusing projection 20 that is orthogonal to the traveling direction of the film 5 is provided at the central portion in the traveling direction of the film 5. The anvil 15 is provided with an impact absorbing device for absorbing the impact at the time of fusing by the protrusion 20 and an adjusting device for adjusting the fusing force (not shown). At the time of fusing, the film 5 is fused by bringing the projection 20 into contact with the facing surface of the horn 13 while applying an ultrasonic wave between the horn 13 and the anvil 15, and at the same time, the film 5 at the fusing part is fused and integrated. .

  The protrusion 20 and the shock absorber and adjusting device (not shown) may be provided on the horn 13 side. The shape of the protrusion 20 is not particularly limited, but preferably has a circular cross section as shown in FIG. 6, and the diameter is preferably about 1.0 to 4.0 mm.

  Simultaneously with the fusing and fusing, before and after the protrusion 20, the wires 14a and 16a are supplied from the horn 13, the wires 14b and 16b are supplied from the anvil 15, and the wires 5a and 14b and 16a and 16b are used as the film 5 respectively. Is inserted and sealed. As shown in FIG. 6, in this example, the horn 13 and the anvil 15 are curved in the vertical direction so that the horn 13 and the anvil 15 are in contact with the wires 14a, 14b, 16a, and 16b so as to easily hold the wires 14a, 14b, 16a, and 16b. ing. Moreover, the center part of the direction parallel to the wire 14a, 14b, 16a, 16b is curving outside so that sufficient pressure may be applied to both ends of the wire.

  FIG. 7 shows a fusing / sealing process by the horn 13 and the anvil 15. In addition, in FIG. 7, (a), (b-1), (c) is a schematic plan view of each step, and (b-2) is a cross-sectional view along AA ′ in (b-1). .

  As shown in FIG. 7, linear synthetic resin wires 14a, 14b, 16a, and 16b having a predetermined length are supplied in parallel, and the converged film 5 is sandwiched between the central portions (FIG. 7 (a)). Then, ultrasonic waves are applied to the wires 14a, 14b, 16a, 16b by the horn 13 and the anvil 15 (FIGS. 7 (b-1) and (b-2)), and are fused and integrated (FIG. 7 ( c)). Also, as shown in FIGS. 7B-1 and 7B-2, the synthetic resin wires 14a, 14b, 16a, 16b are attached to the opposing surface of the horn 13 and the opposing surface of the anvil 15 simultaneously with the fusion of the synthetic resin wires 14a, 14b, 16a, 16b. At the same time as the film 5 is melted by applying ultrasonic waves, the film 5 at the melted portion is fused and integrated with each other in a focused state.

  In this example, the region where the ultrasonic waves are applied to the wires 14a, 14b, 16a, 16b may be at least at both ends, but preferably applied to the entire wires 14a, 14b, 16a, 16b, and the wires 14a, 14b. , 16a, 16b, as well as the wires 5a, 14b, 16a, 16b and the film 5, and the film 5 in a focused state are fused together. That is, by applying ultrasonic waves to the entire facing surface of the horn 13 and the anvil 15 shown in FIG. 6, the entire film 5 from the fusing part to the sealing portion by the wire rods 14a, 14b, 16a, and 16b, and the film 5 And both ends of the wire rods 14a, 14b, 16a, 16b, and the wire rods 14a, 14b, 16a, 16b that are in contact with each other are ultrasonically fused to obtain a cylindrical package with a very high sealing property.

  In the sealing / cutting device 10 of FIG. 6, the form in which the sealing with the synthetic resin wire and the fusing / fusing of the film are performed by one ultrasonic wave application means is shown. The shape is not limited to the shape shown in FIG. 6 as long as the sealability is obtained. In the present invention, sealing and fusing / fusion may be performed by ultrasonic application means provided separately. Alternatively, a pair of wires 14a and 14b and 16a and 16b corresponding to both ends may be provided.

  Also in this example, as in the previous embodiment, it is preferable that the synthetic resin wire is supplied to the apparatus in a reel shape, cut into a predetermined length, and supplied to the sealing and cutting apparatus.

  Also in this example, similarly to FIG. 5, a mode in which one synthetic resin wire is molded into a U shape and sealed is preferably applied.

  The synthetic resin wire used in the present invention can be used as long as it can be sealed by ultrasonic fusion, but is preferably a thermoplastic resin having high ultrasonic suitability and a softening temperature lower than that. A mixture or copolymer with a thermoplastic resin may be mentioned. Specifically, a copolymer of vinylidene chloride (VDC) and vinyl chloride (VC) (VDC / VC copolymer) or a copolymer of VDC and methyl acrylate (MA) (VDC / MA copolymer). And high impact polystyrene (HIPS) with butadiene added, and a preferred mass composition ratio in the VDC / VC copolymer is VDC / VC = 70/30 to 98/2, which is preferred in the VDC / MA copolymer. The mass composition ratio is 85/15 to 98/2.

  The ultrasonic suitability includes factors such as being amorphous (easily soluble) than crystallinity, high purity, high Young's modulus, and low softening temperature. Polyvinylidene chloride (PVDC) has excellent ultrasonic suitability such as a high Young's modulus, but is slightly difficult to dissolve because it is crystalline. On the other hand, polyvinyl chloride (PVC) is amorphous and easily melted, and has a low softening temperature. Therefore, in the VDC / VC copolymer, a desirable state in which the VDC generates heat and the VC melts is formed. As for HIPS, polystyrene (PS) alone is excellent in the ultrasonic suitability, but the fusion effect is further enhanced by adding butadiene having a low softening temperature.

  The synthetic resin film used in the present invention is not particularly limited as long as the side end portions can be fused together and has good sealing properties after packaging. Specifically, the above-described synthetic resin is used. The same VDC / VC copolymer, VDC / MA copolymer, HIPS, PVDC, PVC, nylon (Ny), polyethylene (PE), polypropylene (PP), etc., used for the wire are used. It may be a layer film or a multilayer film.

  In the present invention, it is desirable to use the same material for the synthetic resin film and the synthetic resin wire in terms of recycling and ultrasonic suitability. The packaging method of the present invention is also preferably applied when the packaged item is other than food. However, when the packaged item is food, there are many cases where heat treatment is performed after packaging, and thus heat resistance is provided. It is desirable to select the material.

  The cross-sectional shape of the synthetic resin wire used in the present invention is not particularly limited, but a circular shape is preferable for always obtaining the same sealing strength. Moreover, in normal food packaging, the diameter is preferably about 1 to 5 mm, and the length is preferably about 6 to 24 mm. Moreover, the frequency of the ultrasonic wave applied to the synthetic resin wire is about 15 to 40 kHz, and the application time and amplitude, the pressure at which the wires are brought into contact with each other at the time of application, the material and diameter of the wire to be used, and the required sealing. What is necessary is just to select suitably according to a stop strength.

  Next, a method for driving the cutting and sealing apparatus according to the present invention will be described.

  The feature of the present invention is that the cutting and sealing device 10 is moved at the same speed as the moving speed of the film 5 during the cutting and sealing process exemplified above. Thereby, during the process, the cutting and sealing device 10 prevents the film 5 from sagging or being pulled, thereby preventing the occurrence of defects such as the speed of the entire packaging process being reduced or the film 5 being torn. .

  In FIG. 8, the movement path | route of the cutting | disconnection sealing device 10 in this invention is shown. FIG. 8 is a view of the movement path of the sealing / cutting device 10 as viewed from the side of the apparatus, and is the movement path of the front end of the apparatus that is in direct contact with the film 5. As shown in FIG. 8, the cutting and sealing device 10 descends at the same speed (constant speed) as the descending speed of the film 5 while being in contact with the film 5.

  In the present invention, the specific drive means for moving the cutting and sealing device 10 at the same speed as the film 5 includes a drive system using a drive motor and an indexer, and a drive system using a servo motor and a crank. Is mentioned.

  FIG. 9 schematically shows a configuration example of a drive system using a drive motor and an indexer, and FIG. 10 schematically shows a configuration example of a drive system using a drive motor and a crank.

  In FIG. 9, 21 is a drive motor with a speed reducer, 22 is an indexer, 23 is a transmission, 24 is a pinion, and 25 is a rack.

  In the drive system of FIG. 9, the rotational motion of the drive motor 21 is converted into a reciprocating motion on a 90 ° arc in the indexing device 22, and the arc angle is adjusted using the transmission 23 as necessary. The rack 25 is moved up and down. The drive system can accurately and uniformly control the raising / lowering speed of the rack 25. Further, the rack 25 of the drive system corresponds to the rod 81 in FIG.

  In FIG. 10, reference numeral 26 denotes a servo motor, 27 denotes a crank, and 28 denotes a rod. The rotational movement of the servo motor 26 is appropriately decelerated and converted into vertical movement by the crank 27. The rod 28 of the drive system corresponds to the rod 81 in FIG. In the present drive system, the rotational speed of the servo motor 26 is appropriately reduced in order to lower at a constant speed (constant speed). This drive system has an advantage that the configuration is simple and an expensive apparatus is not used.

  In the present invention, the drive means of the sealing / cutting apparatus is not limited to the configuration illustrated in FIGS. 9 and 10, and any drive means can be used to satisfactorily control the constant vertical speed. Are preferably used. Further, in the present invention, when the cutting and sealing device 10 once lowered is raised for the next sealing step, the drive means is provided with a quick return mechanism that raises at a faster speed than when it is lowered. Thus, the time required for the cutting and sealing means 10 to rise can be shortened and packaging can be carried out more efficiently, which is preferable.

  As described above, the present invention is preferably applied to a form in which a synthetic resin wire is used and the package is sealed by high-frequency fusion. However, the present invention is not limited to this, and the film is converged and sealed. The present invention is preferably applied to a form that requires a predetermined period in performing the stopping and cutting steps.

It is a schematic diagram which shows the sealing cutting apparatus of one Embodiment of the packaging apparatus of this invention. It is a partial expansion perspective view of the sealing cutting apparatus of FIG. It is a figure which shows the focusing process of the film in the sealing cutting apparatus of FIG. It is a schematic diagram of the sealing cutting process in the sealing cutting apparatus of FIG. It is a schematic diagram of the sealing cutting process in the sealing cutting apparatus of other embodiment of the packaging apparatus of this invention. It is an expansion perspective view of the sealing cutting device of other embodiments of the packaging device of the present invention. It is a schematic diagram of the sealing cutting process in the sealing cutting apparatus of FIG. It is a schematic diagram which shows the movement path | route of the sealing cutting device of the packaging apparatus of this invention. It is a schematic diagram which shows one structural example of the drive means of the sealing cutting apparatus of the packaging apparatus of this invention. It is a schematic diagram which shows the other structural example of the drive means of the sealing cutting apparatus of the packaging apparatus of this invention. It is a schematic diagram which shows the structure of the conventional automatic packaging apparatus. It is a schematic diagram which shows the movement path | route of the sealing cutting device of the conventional packaging apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Synthetic resin film 7 Packaged object 10 Sealing cutting apparatus 11a, 11b, 12a, 12b Focusing plate 13, 13a, 13b Horn 14, 14a, 14b, 16a, 16b Synthetic resin wire 15, 15a, 15b Anvil 17 Cutting blade 18 Ultrasonic device 19 Mold 20 Protrusion for cutting 21 Drive motor with speed reducer 22 Indexing device 23 Transmission 24 Pinion 25 Rack 26 Servo motor 27 Crank 28 Rod 30 Material roll 31 Feed roll 32 Drive motor 50 Folder 51 High frequency sealing device 60 Supply pipe 61 Supply pump 62 Drive motor 70 Pinch roller 71 Pinch device 80 Sealed box 81 Rod 82 Lifting mechanism 83 Rotating shaft 84 Drive motor 101 Automatic packaging device 102 Cylindrical package 103 Conveying device 105 Cylindrical film formation 106 filling device 107 ironing device 108 sealing cutting device 109 controller 110 filmstrip 112 base plate 114 body 120 tubular film

Claims (7)

It is a packaging method of a cylindrical package formed by sealing both ends of a cylindrical film filled with an article to be packaged,
While continuously feeding the strip-shaped synthetic resin film, the side edges of the film are overlapped and fused to form a cylindrical film continuously, and the cylindrical film is continuously filled with the objects to be packaged To form a cylindrical body, continuously squeezing the cylindrical body from the outside at a predetermined interval to push the inner package, and at the same speed as the film while contacting the film during the sealing and cutting process. By the sealing cutting means that moves, the film in the pushed area is converged, and two places are sealed at a predetermined interval in the converging part, and the film is cut at the center of the two sealing parts, A method for packaging a cylindrical package, comprising: obtaining a cylindrical package. It is a packaging device for a cylindrical packaging body formed by sealing both ends of a cylindrical film filled with an article to be packaged,
Means for continuously feeding a belt-shaped synthetic resin film;
Means for continuously forming a tubular film by overlapping and fusing side edges of the film;
Means for continuously filling an object to be packaged in the tubular film to form a tubular body;
Means for continuously squeezing the cylindrical body from the outside at a predetermined interval to push the inner package;
A means for converging the film in a region where the article to be packaged is pushed, a means for sealing two places at a predetermined interval in the converging part, and a means for cutting the film at the center of the two sealing parts. Sealing cutting means;
Driving means for moving the sealing cutting means at the same speed as the film while contacting the film during the sealing cutting step;
A packaging device comprising at least The packaging device according to claim 2, wherein the means for sealing at the converging part of the film is a means for sealing the end part of the wire by ultrasonic fusion by sandwiching the converged film with a synthetic resin wire. When the driving means moves the means for ultrasonically fusing the synthetic resin wire in the direction opposite to the film traveling direction for the next sealing, the driving means is moved at a faster speed than the film sealing. The packaging apparatus of Claim 3 provided with the return mechanism. The packaging device according to any one of claims 2 to 4, wherein the film cutting means is means for ultrasonically cutting the film. 6. The drive means of the sealing cutting means comprises a drive motor and an indexer that converts the rotational motion of the drive motor into a reciprocating motion on an arc of a predetermined angle. Packaging equipment. The packaging device according to any one of claims 2 to 6, wherein the driving means of the sealing and cutting means includes a servo motor and a crank that converts the rotational motion of the servo motor into a vertical motion.

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