JP2002059903A - Automatic filling and packaging method and apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic filling and packaging method and an apparatus including a moving body which can keep the same speed as that of a traveling film and a cylinder for a predetermined period of time. SOLUTION: A tape piece attaching device 20 has, on a first moving body 24 which linearly reciprocates in parallel to a strip film F, an attaching member for attaching a tape piece T1 to the strip film during the reciprocation of the first moving body 24. A binding and cutting device 71 has, on a second moving body 70 which linearly reciprocates in parallel to the cylinder F1, a binding member for binding the cylinder during the reciprocation and a blade for cutting. The moving bodies are driven by drivers for exclusive use which are respectively controlled so that at least the first moving body 24 is controlled to move at a constant speed the same as that of the corresponding strip film for a predetermined period of time during the reciprocation. At least the second moving body 70 is controlled to move at the constant speed the same as that of the cylinder for a predetermined period of time during the reciprocation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an automatic filling and packaging method and apparatus.

[0002]

2. Description of the Related Art A belt-like film is drawn out from a raw material formed by winding a belt-like film into a roll, and the running belt-like film is formed into a tubular shape with a forming plate, and the overlapping portion is sealed to form a tubular body. And into it,
For example, the contents such as meat are filled, the contents in the cylindrical body are partially crushed, and the cylindrical body is squeezed and conveyed by a pair of squeezing rollers. There is widely known an automatic filling and packaging apparatus which applies two clips at a predetermined close position and cuts between the two clips to obtain a package of a predetermined length, for example, a sausage-like package, as a product.

[0003] In many cases, a package is provided with a piece of tape which is easy to pick in order to make it easy for a consumer to peel off the package (film) when taking out the contents.

[0004] Such a piece of tape is, for example, Japanese Utility Model 7-3.
In the filling and wrapping process, the strip film is attached to the strip film at a distance corresponding to the length of a single package before reaching the forming plate by a tape piece attaching apparatus as disclosed in US Pat. Tape pieces are
The continuous tape is intermittently cut into tape pieces, and the tape is attached to the film by an ultrasonic welding device by an operation of continuing the cutting. Thus, the tape strip can be mounted in a position that is the easiest to pick and to tear off the package.

[0005] Attachment of the tape piece of the band-shaped film and ligating / cutting of the tube are performed intermittently during continuous running of the band-shaped film and the tube at a constant speed. Therefore, the tape piece attaching device and the ligating / cutting device are mounted on each of the moving bodies reciprocating along the band-shaped film and the tubular body, and the moving body is at the same speed as or close to the speed of the band-shaped film and the tubular body. At this point, the tape piece is attached, and the tubular body is ligated and cut. The moving body is usually driven and moved by a crank mechanism, and its speed changes with a sine wave. Therefore, if the maximum value of the speed curve forming the sine wave is made to coincide with the running speed of the band-shaped film or the cylindrical body, a speed close to the running speed near the apex of the sine wave is maintained for a relatively long time. Can be secured.

[0006]

However, since the speed of the moving body is constantly changing, even if it is a vertex of a speed curve forming a sine wave, it is constant only because the speed change before and after the peak is small. No, it can be the same as the running speed of the strip film and the cylindrical body only for a moment.

[0007] It takes a certain amount of time to attach the tape pieces and ligate / cut the tubular body, although it is a short time. Here, the belt-like film and the tubular body, the tape attaching device, and the ligating / cutting device are used. A speed difference is produced between the moving part and the moving part. This speed difference causes a problem that the running speed of the strip film is pulsated or meanders.

The present invention solves such a problem and provides a tape piece attaching device and a ligating / unlocking device provided on a moving body having a speed diagram that maintains the same speed for a predetermined time length with the film and the cylindrical body. An object of the present invention is to provide an automatic filling and packaging method and apparatus having a cutting device.

[0009]

According to the present invention, an object of the present invention is to provide an automatic filling and packaging method, wherein a strip of film is pulled out from a raw material, and the strip of tape is attached to the running strip of film at predetermined intervals by a tape strip attaching device. Is attached, and the belt-like film is formed into a tubular shape while guiding the traveling thereof.The tubular film is sealed by the overlapping portion, and the contents are fed into the tubular body.
In an automatic filling and packaging method in which the tubular body is intermittently ligated at two positions by a ligating / cutting device and cut between the two ligating portions, the tape piece attaching device is linearly reciprocated in parallel along the band-shaped film. Ligating and cutting device on the first moving body
Arranged on a second moving body that reciprocates linearly in parallel along the cylindrical body, so that at least the first moving body moves at the same constant speed as the corresponding band-shaped film for a predetermined time length during forward movement. And at least the second moving body is controlled to move at the same constant speed as the cylindrical body during a predetermined time length during the forward movement.

The object of the present invention is also directed to an apparatus for carrying out the above method, comprising: a pull-out roller for extracting a strip film from a raw material; a tape piece attaching device for attaching a tape piece to the running strip film at a predetermined interval; A forming plate for forming the tubular film into a tubular shape while guiding the traveling of the belt film, a sealing device for sealing the tubular film with a polymerization section to form a tubular body, and a nozzle device for sending contents into the tubular body. An automatic ligating / cutting device for intermittently ligating the tubular body at two positions and cutting between the two ligated parts, and a tubular body feed roller for feeding the tubular body filled with the contents. In the filling and packaging apparatus, the tape piece mounting device includes a first moving body that linearly reciprocates in parallel along the band film, and a mounting member for mounting the tape piece to the band film when the first moving body moves forward. The ligating / cutting device is provided with a ligating member that ligates the cylindrical body during forward movement and a blade body that performs cutting, on the second moving body that linearly reciprocates in parallel along the cylindrical body, At least the first moving body is controlled to move at the same constant speed as the corresponding band-shaped film for a predetermined time length during the forward movement, and at least the second moving body is controlled for a predetermined time length during the forward movement. , So that it moves at the same constant speed as the cylindrical body,
This is achieved by being driven by dedicated controlled drive devices, respectively.

In the present invention, at least one of the driving device for the first moving body and the driving device for the second moving body includes a crank that is rotationally driven by a motor connected to a control device, and one end having the crank. And the other end is connected to the first and second moving bodies, and the other end is connected to the first and second moving bodies. The motor may be controlled by the control device to achieve speed.

The tape piece mounting apparatus has a cutting member that cuts the tape into a predetermined length to form a tape piece when the first moving body moves forward, and the mounting member performs a mounting operation in conjunction with the cutting member. Can be done.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the apparatus of the present embodiment shown in FIG.
Reference numeral 1 denotes an original roll obtained by winding a belt-like film in a roll shape. A film F pulled out from the raw roll 1 is conveyed by a pair of pull-out rollers 3 via a guide roller 2. One of the pair of pull-out rollers 3 is rotationally driven by the first motor M1.

The film F is tensioned by the tension applying device 10 during continuous running to such an extent that the film F is not loosened or over-tensioned. The tension applying device 10 has deflecting rollers 11 to 16, upper rollers 11 to 14 are at fixed positions, and lower rollers 15 and 16 are levers 18 that can rotate about a fulcrum 17. And is movable up and down. That is, the length of the film F between the roller 11 and the roller 14 is changed and adjusted so that there is no slack. At this time, the first motor M1, that is, the rotation speed of the pull-out roller 3, is controlled so that the lever 18 maintains the horizontal position and the load of the rollers 15, 16 is constant.

A tape piece attaching device 20 is provided at a position ahead of the adjusting device 10. The tape piece attaching device 20 is provided with deflecting rollers 21, 22, and 23 at the front and rear, so that the tape pieces can be attached at regular intervals while the belt-shaped film F is running in the horizontal direction. The tape piece is for easily opening the package when obtained as a product, and is attached to the strip-shaped film so as to come to a fixed position of each package. The tape piece attaching device 20 has a first moving body 24 which is located between the deflection rollers 22 and 23 and reciprocates in the horizontal direction. The moving body 24 is driven by the slider crank mechanism 25 (see also FIG. 3), and moves at the same speed as the film F for a predetermined time when moving in the same direction as the film F.

The slider crank mechanism 25 of the present embodiment
As shown in FIG. 3, one end of a rod 25B is connected to a crank 25A rotationally driven by a servo motor MS, and the first moving body 2 horizontally moves to the other end of the rod 25B.
4 are connected. Therefore, when the servo motor MS makes one rotation, the first moving body 24 makes one reciprocation. in this case,
In the present embodiment, the servomotor MS rotates at a speed that varies depending on the angular position instead of a constant speed.

In FIG. 3, the radius of rotation of the crank 25A is r, the length of the rod 25B is l,
If the horizontal position of X is X, a geometrical relationship of r ² + l ² + X ² = 2rX cos θ is established. Therefore, θ = cos ⁻¹ {(r ² + l ² + 2X ² ) / (2rX)}.

If the motor MS, that is, the crank is rotated at a constant rotation speed, X changes so as to draw an arc wave. However, in this case, the first moving body 24 cannot move at the same speed in the same direction as the film F for a predetermined time length. Therefore, in the present embodiment, the rotation speed of the motor MS is controlled.

As shown in the velocity diagram of FIG. 4B, in this embodiment, a predetermined time, that is, a predetermined rotation angle (θ
w), the speed V of the first moving object (that is, dx / d)
Let t) be the same constant value as the film traveling speed. This is x
As shown in FIG. 4 (A), there is a linearly changing portion in the range of Xω corresponding to θw as shown in FIG. Therefore, the tape piece T1 may be attached to the film F within the range of Xw. The rotational angular velocity ω and rotational angle θ of the motor MS corresponding to these X and V are as shown in FIGS. 4D and 4C, respectively.

In this embodiment, the rotation angle when rotating at a constant speed is defined as a virtual axis rotation angle so that the states shown in FIGS. 4C and 4D are maintained. , X and V are stored in a storage device in advance so as to maintain the above relationship, and are sequentially extracted to perform position control or speed control of the rotation angle θ or the angular speed ω of the motor MS.

In this embodiment, the tape piece is attached to the film F by ultrasonic waves in the above-mentioned tape piece attaching apparatus. However, the attaching method is not limited to this. It may be in the form. The first moving body 24 is provided with a cutting member 26 and a mounting member 27 as shown in FIG. The cutting member 26 has a stationary member 26A and a movable member 26B, and the stationary member 26A
Guides the tape T, the movable member 26B moves and comes into sliding contact with the front surface (blade surface) of the stationary member 26A, thereby cutting the tape T into a tape piece T1 of a predetermined length. The mounting member 27 has a stationary ultrasonic horn 27A, and the vertically movable member 26B presses the tape piece T1 and the film F between the ultrasonic horn 27A immediately after cutting the tape, and simultaneously ultrasonic welding is performed. Done. That is, the movable member 26B
Has the function of an anvil as a mounting member as well as a cutting member.

As shown in FIG. 1, the tape T is intermittently pulled out from a raw material 29 wound on a roll, guided by a plurality of guide rollers 28A to 28H, and guided to the stationary member 26.
Brought to

A film feeding device 30 is provided between the tape piece attaching device 20 and the forming plate 40. The film feeder 30 includes a third motor M
The film F is fed at a predetermined speed by having a feed roller 31 composed of a roller 31A driven by the roller 3 and a roller 31B which rotates by pressing against the roller 31A. A plurality of guide rollers 32A to 32G are provided between the film feeding device 30 and the forming plate 40, and the film F with the tape piece T1 continuously running at a predetermined speed is transferred to the forming plate 40. Sent. And among the plurality of guide rollers 32A to 32G, the roller 32B
Is movable downward, where the tension of the film F can be detected. The rotational speed of a tubular body feed roller 51 described later is controlled so that the tension detected by the detection roller 32B is kept constant. Thus, when the film passes through the below-described forming plate 40, the resistance at the time of passing the film is stabilized, and therefore, the running of the film is stabilized.

The forming plate 40 may be a well-known one. The band-shaped film F is rolled in the width direction to form a tube having a superposed portion, and is formed by a sealing device (not shown), for example, an ultrasonic sealing device. The overlapping portion is welded to form a complete film cylindrical body F1. And
A nozzle 41 is provided on the forming plate 40 from above.
Penetrates, and the cylindrical body F1 is filled with contents.

Below the forming plate 40, a tubular body feeding device 50 is provided. The cylindrical body feeding device 50 includes a disk-shaped roller 51A that is driven to rotate by the second motor M2 and a disk-shaped roller 5 that rotates by pressing against the roller 51A.
1B. The pair of rollers 51A and 51B presses the central portion of the cylindrical body filled with the contents in the radial direction to partially push out the contents, thereby leaving the horizontal cross-sectional shape of the cylindrical body with a constricted width. The tubular body is fed downward at a predetermined speed while making the figure eight.

A pair of rotatable cylindrical rollers 60 intermittently pressed against each other below the cylindrical body feeding device 50.
An ironing roller 60 composed of A and 60B is provided so as to be able to freely contact and separate. When the pair of rollers 60A and 60B are pressed and rotated, an area where the content is absent for a predetermined length is formed in the cylindrical body F1 by pressing and pressing the rollers.

Below the ironing roller 60, a second moving body 70 is provided. The second moving body 70 is
It is reciprocated up and down by a drive mechanism (not shown), and when moving downward, it moves at the same speed as the cylindrical body F1 for a predetermined time. The second moving body 70 accommodates a ligating / cutting device 71 as shown in FIG. The second moving body 70 can be driven by the same driving mechanism as the first moving body 24 described above, except that the moving direction is the vertical direction.

The ligating / cutting device 71 includes two pairs of ligating members 72A and 72B which move toward and away from the cylindrical body F at two positions close to each other in the running direction of the cylindrical body F1, and the two ligating members. A knife-like cutting member 73 is provided between the members 72A and 72B and moves together with the ligating member in the direction of the tubular body F1. The ligating members 72A and 72B have grooves 7 on their front end surfaces.
4A and 74B are formed. Here, straight ligating wires 75A and 75B having a predetermined length are crushed in a round shape, and the tubular body F1 is ligated at two locations in the area where the content of the tubular body F1 is absent. . The cutting member 73 cuts the tubular body between the two ligated parts.

The ligating / cutting device 71 (second moving body 7)
0), a chute 80 is provided below the ligature.
The cut cylindrical body becomes an individual package, which is dropped here and discharged as a product.

In this embodiment, the first motor M1 for the film pull-out roller 3, the second motor M2 for the cylindrical feed roller 51A, and the third motor M3 for the film feed roller 31A are provided. Are provided so that they can be driven independently of each other, but can be switched from independent drive to interlocked drive and vice versa. It is connected to and controlled by a control device (not shown) that enables it.

In the apparatus of this embodiment, a product is manufactured in the following manner in a normal state. After the belt-like film F is pulled out by the pair of pull-out rollers 3 driven by the first motor M, the film F continuously runs at a constant speed in a state where tension is applied by the tension applying device 10 so as not to be loosened, and the tape It passes through the piece mounting device 20. On the other hand, after the tape T is pulled out from the web 29, it is brought to the tape piece attaching device 20. In the tape piece attaching device 20, when the first moving body 24 moves at the same speed and in the same direction as the film F, the movable member 2
6B moves and cooperates with the stationary member 26A to cut the tape T into a predetermined length to form a tape piece T1,
6 is pressed together with the film F between the ultrasonic horn 27A and a part of the tape piece T1 is welded to the film F.
At this point, the tape is pulled out by the length of the next piece of tape. The film F with the tape piece T1 to which the predetermined tension is given by the tension applying device 10 is attached to the third motor M3.
Are fed at a constant speed by rollers 31A (and 31B) driven by. When the tension is applied, the distance between the mounting positions of the tape pieces is stabilized. After the film F is formed into a cylindrical shape by the forming plate 40, the overlapped portion is sealed to form a film cylindrical body F1. The cylindrical body F1 is filled with the contents from the nozzle 41, and the cylindrical body F1 with the contents filled therein is supplied to the second motor M1.
The feed roller 51A (and 51B) driven downward by 2 feeds downward, and the ironing roller 60 partially forms a non-content area at regular intervals. Thereafter, the tubular body F1 is ligated and cut by the ligating / cutting device 71 in an area where there is no content, falls into individual packages, falls onto the chute 80, and is discharged as a product. In this way, a package (product) having the opening tape piece attached in a predetermined position is obtained.

The apparatus according to the present embodiment performs the adjustment operation at a low speed at the start of the operation of the apparatus, that is, at the time of initial setting, in order to minimize waste of films and contents discarded for adjustment. To do so, the first motor M1,
The second motor M2 and the third motor M3 rotate at low speed while being driven independently of each other, and are set at the rotational speeds in the best condition. Thereafter, the three motors M
1, M2, and M3 are switched to the interlocking drive based on the third motor M3, and the speed is increased while maintaining the ratio of the rotation speeds of each other, and brought to a predetermined high rotation speed, that is, a steady operation state. In addition, it is also possible to decelerate to a low speed in this interlocking drive state for some adjustment.

[0033]

As described above, according to the present invention, since the operating portions of the tape piece attaching device and the ligating / cutting device have the same constant speed as the band-shaped film or the cylindrical body for a predetermined time length. ,
The displacement of the operating part is eliminated, the pulsation and meandering of the running speed of the film and the cylindrical body are prevented, and as a result, smooth operation is ensured in the operation of the device, and a high quality package is a product. can get.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an entire apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing a main part of a tape piece attaching device of the apparatus in FIG. 1;

FIG. 3 is a view showing a slider crank mechanism for a first moving body of the apparatus shown in FIG. 1;

FIGS. 4 (A) to (D) show a displacement diagram, a speed diagram, a rotation angle diagram, and a rotation speed diagram of the apparatus in FIG. 3, respectively.

FIG. 5 is a diagram showing an outline of a ligating / cutting device of the device shown in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 raw material 3 pull-out roller 10 tension applying device 20 tape piece attaching device 24 first moving body 40 forming plate 41 nozzle 51 tubular feed roller 70 second moving body 71 ligating / cutting device F film F1 tubular body T tape T1 Piece of tape

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshihiro Abe 18-13, Kamitamari, Tamari-mura, Niigata-gun, Ibaraki Pref. Resin Processing Technology Center, Kureha Chemical Industry Co., Ltd. (72) Inventor Kiyomi Seya Tamari-mura, Niigata-gun, Ibaraki 18-13 Kamitamari Kureha Chemical Industry Co., Ltd.Resin Processing Technology Center (72) Inventor Masahiro Sunada 662 Nojiri, Fukuno-cho, Higashi Tonami-gun, Toyama Prefecture Fabrica Toyama Co., Ltd. (72) Kiyoshi Sawada Higashi-Tonami-gun, Toyama Prefecture 662 Nojiri, Fukunocho Inside Fabrica Toyama Co., Ltd. (72) Inventor Tsutomu Ishii 662 Nojiri, Fukunocho Fukunocho, Higashi Tonami-gun, Toyama F term (reference) 3E050 AB02 BA02 CA01 CA08 CB07 CC09 DC02 DG02 DH04 FB01 FB07 GB02 GC06 HB06

Claims (5)

[Claims] 1. A belt-like film is pulled out from a raw material, tape pieces are attached to the belt-like film to be run at predetermined intervals by a tape piece attaching device, and the belt-like film is formed into a tubular shape while traveling and guiding. An automatic filling and packaging method in which the film is sealed at the overlapping portion, the contents are fed into the tubular body, and the tubular body is intermittently ligated at two adjacent positions by a ligating / cutting device and cut between the two ligating portions. In the above, the tape piece attaching device is disposed on the first moving body that reciprocates linearly and reciprocally in parallel along the band-shaped film, and the ligating / cutting device is disposed on the second moving body that reciprocates linearly and reciprocally in parallel along the tubular body. Then, at least the first moving body is controlled to move at the same constant speed as the corresponding band-shaped film for a predetermined time length during the forward movement, and at least the second moving body is moved for a predetermined time during the forward movement. For a long time, move at the same constant speed as the cylindrical body. Automatic filling and packaging method, characterized in that it is controlled to 2. A draw-out roller for pulling out a band-like film from a raw material, a tape-piece attaching device for attaching a tape-piece to the running belt-like film at a predetermined interval, and a forming plate for forming the belt-like film into a tubular shape while guiding the traveling of the band-like film. And a sealing device that seals the cylindrical film at the overlapping portion to form a cylindrical body, a nozzle device that sends contents into the cylindrical body, and ligates the cylindrical body intermittently at two adjacent positions. In an automatic filling and packaging device having a ligating / cutting device for cutting between two ligating portions and a cylindrical body feed roller for feeding a cylindrical body filled with contents, the tape piece attaching device is arranged along the band-shaped film. The first moving body reciprocating linearly in parallel with the first moving body is provided with an attaching member for attaching the tape piece to the band-shaped film at the time of the forward movement of the first moving body, and the ligating / cutting device is arranged along the cylindrical body. Parallel linear reciprocation The second moving body, a ligating member for ligating the tubular body at the time of forward movement and a cutting body for cutting are disposed,
At least the first moving body is controlled to move at the same constant speed as the corresponding band-shaped film for a predetermined time length during the forward movement, and at least the second moving body is controlled for a predetermined time length during the forward movement. An automatic filling and packaging apparatus, wherein each of the automatic filling and packaging apparatuses is driven by a dedicated driving device controlled so as to move at the same constant speed as the cylindrical body. 3. A driving device for a first moving body, comprising: a crank rotatably driven by a motor connected to a control device; one end connected to the crank and rotating; A link connected to the body and reciprocating linearly, and the motor is controlled by the control device so as to have a rotation speed that varies according to a constant speed at the other end for a predetermined time length. 3. The automatic packaging device according to claim 2, wherein: 4. A driving device for a second moving body, comprising: a crank rotatably driven by a motor connected to a control device; one end connected to the crank and rotating; A link connected to the body and reciprocating linearly, and the motor is controlled by the control device so as to have a rotation speed that varies according to a constant speed at the other end for a predetermined time length. 3. The automatic packaging device according to claim 2, wherein: 5. A tape piece mounting device, comprising: a cutting member that cuts a tape into a predetermined length to form a tape piece when the first moving body moves forward, wherein the mounting member operates in conjunction with the cutting member. The automatic packaging apparatus according to claim 2, wherein the automatic packaging apparatus is adapted to perform the following.