JPH0369765B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in an automatic packaging filling device.

(Prior Art) Conventionally, the filling method for automatically packaging powders or granules, such as sugar, stomach powder, etc., into a packaging film in the form of a stick is to cover a tubular chute with a tube-shaped packaging film, In synchronization with the intermittent vertical feed, the items to be packaged are passed through a cylindrical chute and filled, and then the film is thermally welded and cut, and all of these operations are performed in the filling section. The problem was that high-speed and continuous mass packaging was not possible.

In contrast, recently, a plurality of tubular mandrels suspended from a conveyor horizontally surrounding the input and output rotors are used to carry thermoflexible film packages, which are then cut into one bag length using a cutting device. A continuous packaging method is known in which the product is sealed with a sealing device and the product is distributed and filled through a tubular mandrel from a measuring chamber with a fixed hopper (see, for example, Japanese Patent Publication No. 54-29956).

(Problems to be solved by the invention) However, in this conventional continuous packaging method,
The packaging packages are fed to the mandrel by a plurality of feeding means arranged perpendicularly below the mandrel around the input rotor in line with the pinch of the mandrel. Since it is rational, it requires multiple feeding means, making the structure complicated. Along with this, it is important to maintain multiple feeding means and check the remaining amount of multiple packaging packages, and there is also the problem that high-speed operation is not possible, and the weight is large because the film is moved every time. There was a problem in that the machine had to be stopped to replace the film.

Therefore, the present invention utilizes air suction force as the moving body moves along the horizontal traverse movement path in the process of continuously horizontally feeding the tubular packaging film to the filling section of the packaged items. A guide means made of a rod-shaped member that guides the pulling of the packaging film continuously from the horizontal direction into the moving path through a holding means including a suction head that is attached to the moving path is set at a line tangent to the moving path or a line forming a small acute angle. By arranging them adjacent to each other along the same line, it is possible to eliminate the conventionally employed supply device for supplying and driving the packaging film, and at the same time, it is possible to largely eliminate maintenance and inspection work surrounding the guide means of the supply section. Furthermore, the flow of the packaging film is rational and can be sufficiently followed to cope with the high-speed filling of the filling section, and the suction head of the holding means is also controlled by a crank and cam mechanism that is linked to the movement of the moving body. By turning around the horizontal axis without relying on rocking, it is possible to quickly turn one bag's worth of packaging film from a horizontal horizontal position to an upright position by 90 degrees, and a separate cam mechanism allows for smooth rotation. In addition, the filling chute corresponding to each suction head can be raised and lowered in a timely manner to perform filling without interrupting the movement of the movable body. Therefore,
SUMMARY OF THE INVENTION An object of the present invention is to provide a functional automatic packaging filling device capable of continuous high-speed, large-volume packaging, which can achieve much higher productivity than conventional ones.

(Means for solving the problem) The means for achieving the above purpose is to utilize air suction force by disposing a large number of them at equal intervals on a moving body that moves along the horizontal traverse movement path of the tube-shaped packaging film. A packaging film holding means including a suction head, a film cutter for cutting the packaging film into lengths equivalent to one bag, a lower heat welding means for sealing the lower end opening of each cut packaging film, and a lower end opening for sealing the lower end. In an automatic packaging filling device comprising a filling chute arranged at a fixed position on the moving path and capable of being raised and lowered so as to fill the packaging film with the packaging material from the upper end opening, and a packaging material filling section cooperating with the packaging film, the tube guiding the shaped packaging film to be drawn in continuously from the horizontal direction along a line tangent to the moving path or a line forming a small acute angle through the suction head of the holding means as the moving body continues moving; A guide means made of a hollow or solid rod-shaped member is provided adjacent to the moving path, and the suction head is moved along with the movement of the movable body after the film cutter cuts the tube-shaped packaging film into a length corresponding to one bag. A crank and cam mechanism is provided at and near the end of the head shaft to rotate the head shaft 90 degrees around the horizontal axis of the suction head to raise the suction head, and the filling chute is provided above the suction head in correspondence with each of the suction heads. A cam mechanism is provided at the end of the lifting rod of the filling chute and in the vicinity thereof, which is movable up and down, and which lowers the filling chute with the movement of the movable body when it reaches the position of the packing material filling part, and then returns the filling chute to the above-mentioned state. This is an automatic packaging filling device featuring:

(Function) The tube-shaped packaging film is pulled by the packaging film holding means that moves together with the moving body that moves along the horizontal traverse movement path of the automatic packaging filling device, and is guided by the guide means of the rod-shaped member. This means that the packaging film is continuously and smoothly fed from a horizontal direction that is almost tangential to the moving path, making it possible to omit the conventionally used feeding means for driving the packaging film, and to increase the filling speed. In response to this, the packaging film supply speed can be sufficiently increased, and furthermore, maintenance and inspection work around the packaging film supply section can be significantly reduced.

In addition, by using a crank and cam mechanism that is linked to the movement of the moving body, the suction head of the holding means can hold a tube-shaped packaging film as long as one bag around the horizontal axis without having to swing the film, which requires a large space. It can be quickly raised from a horizontal position by turning 90 degrees, and the filling chute provided above each suction head can be moved by a cam mechanism linked to the movement of the movable body. It is possible to raise and lower the moving body in a timely manner without interrupting the movement of the moving body at the fixed position of the filling part, and it is possible to accelerate the speed of the present apparatus.

(Example) The details of this invention will be explained below with reference to the drawings.

In FIG. 1, reference numeral 1 designates a forming pipe, and as shown in FIG. 8, a band-shaped packaging film 2 is continuously supplied to this forming pipe, and the wrapping film 2 is gradually wound around the forming pipe and closed in a tube shape. 3, the overlapping portions of both sides of the film are sealed, and the tubular packaging film 4 is formed. This mechanism is of well-known construction and will not be discussed further. The formed tube-shaped packaging film 4 is guided by the forming pipe 1, which is a hollow rod-shaped member serving as a guide means, and moves along a first movement path (indicated by arrow _F1 ) around the vertical axis _O1 in FIG. , and a second movement path (indicated by arrow F ₂ ) around the vertical axis O ₂ , along with the movement of the holding means 6 smoothly from a tangential direction to an approximately figure-eight horizontal circumferential movement path over a long distance including a second movement path (indicated by arrow F 2 ) around the vertical axis O 2 . It has a basic route configuration that enables high-speed, high-volume packaging. In the first moving path _F1 , the tube-shaped packaging film 4 is cut into individual packaging films each having a length of one bag by the film cutter 7, and the packaging film is placed in the position of the crank and cam mechanism. The holding means 6 are turned 90 degrees by the control means 13 to 16 to stand up, and then the lower heat welding means 9 performs a sealing operation on one end (lower end) of the holding means 6 and a filling operation of the packaged object is performed. Strained,
After that, the packaging film itself passes through a calming path that spans approximately half a circle, moves to the second movement path _F2 , and after a sealing operation is performed on the remaining other end (upper end), it is discharged as a packaged product. It is made to be done.

That is, for the first movement path _F1 , as shown in FIGS. 1 and 2, a turntable 5 with a large diameter is provided, which constitutes a moving body rotated about the vertical axis _O1 , and this turntable 5, film suction means 6 are arranged radially at regular intervals (corresponding to the length of the single packaging film mentioned above), and film cutters 7 are arranged between adjacent film suction means 6, 6. They are arranged radially at the same intervals as described above, and furthermore, lower heat welding means 9 are disposed above the suction head 8 of the film suction means 6, and above the suction head 8. A chute 10 for filling the objects to be packaged is arranged so as to be movable up and down.

The film adsorption means 6 adsorbs the tube-shaped packaging film 4 that is being fed horizontally at a suitable position at point A in FIG. C
It is made to stand vertically at a point and functions to hold the packaging film alone until it reaches the delivery point D to the second moving path _F2 . As shown in FIGS. 2 and 3, the film suction means 6 is rotated 90 degrees about its horizontal axis by position control means 13-16 of a crank and cam mechanism. That is, a head shaft 12 is rotatably supported in a fixed case 11, a suction head 8 is fixed to the outer end of the head shaft 12, and a cam rotor 14 is mounted on the inner end via a crank arm 13. The rotor 14 is thrust into engagement with a cam groove 16 on the side of the fixed frame 15, and is regulated by the cam groove 16 as the turntable 5 rotates, thereby controlling the rotation of the suction head 8. Further, the suction head 8 has a film suction groove 8a having a substantially U-shaped cross section.
A vacant chamber 8b is formed inside the head, which communicates with an air suction path 12a inside the head shaft, and a suction pipe 17 that communicates with an external air suction source is connected to the case 11. By communicating or cutting off the suction port 17a, which is a connection point, and the suction path 12b, suction force can be applied to or stopped on the suction head 8. Therefore,
The suction head 8 has a vacant chamber 8b and a film suction groove 8a.
A large number of pores 8c (shown in FIG. 3) are bored to connect the two. The range in which the suction force is generated in the suction head 8 is from the point A in FIG. 1 or the position immediately before it to the transfer point D.

The film cutter 7 clamps the tube-shaped packaging film 4 supplied to point A, pulls it into the first moving path _F1 , and cuts the film at point B to form a single packaging film.
A tube-shaped packaging film 4 is passed between the fixed blade 7a and the movable blade 7b in FIGS. 6 and 7, and the movable blade 7b is moved by a cam mechanism from the state where the film 4 is clamped by the clamp members 7c and 7d. , disconnect.

As shown in FIGS. 2 and 3, the lower heat welding means 9 includes a pair of heaters 9a and 9b that are opened and closed by gears 18a and 18b.
b is normally kept open by a spring device (not shown), and as the push rod 21 is slid to the left in the drawing via the cam rotor 20 that presses against the fixed cam plate 19, both heaters 9a and 9b are closed. It is composed of Reference numeral 21a denotes a protrusion that is movably supported at the tip of the pusher rod 21 via a spring 22, and this protrusion 21a presses the heater 9c to close both heaters 9a and 9b.

The filling chute 10 is mounted on an elevating rod 23 as shown in FIG. 2, and its elevating and lowering is controlled by cam guide means 25 to 27 forming a cam mechanism. That is, the lower end of the lifting rod 23 is held by the support table 24 which rotates together with the turntable 5 so that it can rise and fall freely, and the cam roller 25 installed on the lifting rod 23 is inserted into the cam groove 27 on the fixed frame 26 side and engaged. This cam groove 27 allows the lifting rod 2 to
3 and the filling chute 10 are raised and lowered.

The first movement route as shown in Figures 1 and 3
A measuring/filling section 28 for the objects to be packaged is provided at a midway upper position of _F1 . The part 28 has gears 29a and 2.
There is a weighing table 30 which is rotated by the meshing of the parts 9b, and this weighing table 30 is provided with pockets 31 for weighing the packaged items at regular intervals in the circumferential direction, and a shutter plate 32 which can be opened and closed at the bottom of the pockets 31. With a fixed quantity of the articles supplied on the table 28 stored in the article measuring pocket 31, when the filling chute 10 arrives directly below, the shutter plate 32 is opened and the chute 10 is opened.
A fixed amount of the packaged material is dropped into the container. In other words, the rotation locus of the packaged object measuring pocket 31 is the same as the filling chute 1 in the first movement path _F1.
When the shutter plate 32 overlaps, the shutter plate 32 is opened and the bottom of the pocket is opened to the filling chute 10 directly below it. 33 in Figure 2 is the weighing table 30
The rotating support shaft 34 is an arm that supports the support shaft 33.

On the other hand, for the second moving path F ₂ , as shown in FIG. 4, a turntable 35 that rotates around the vertical axis O ₂ is provided, and upper heat welding means 36 are provided thereon at regular intervals. This means includes a fixed heater 36a and a rotating heater 36 that is opened and closed relative to the fixed heater 36a.
A cam mechanism is provided which supports the heaters 36a and 36b with a support frame 37 and rotates the rotary heater 36b about its support shaft 36c. This cam mechanism presses a cam rotor 39 against a fixed cam plate 38 to move the pusher rod 40 forward and backward, and has substantially the same configuration as the cam mechanism in the lower heat welding means 9 described above. The upper heat welding means 36 grips the upper end of the single packaging film transferred from the first moving path _F1 to the second moving path _F2 with heaters 36a and 36b, and applies heat welding to the packaging film. The heaters 36a and 36b protrude outward from the periphery of the turntable 35 in order to suspend the film alone.

Next, to explain the wrapping operation, after the tube-shaped packaging film 4 shown in FIG. 8B is formed from the strip-shaped packaging film ₂ shown in FIG. It is continuously supplied at high speed from the tangential direction as the suction heads 8 move at high speed. That is, as the large-diameter turntable 5 rotates at high speed, the film cutter 7 clamps the tube-shaped packaging films 4 at intervals of one bag length at the point A, and pulls them into the first moving path _F1 at high speed. go. Further, the suction head 8 suctions the central portion between the front and rear clamp points. Next, at point B in FIG _. 1, the leading film cutter 7 cuts the clamp point _N2 on the leading edge side in the moving direction with respect to the suction point _N1 in FIG. The _three points N on the rear side are also cut by the trailing film cutter 7, and the length of one bag is l.
A single packaging film 41 is formed. In this case, it is clear that the cutting point N ₃ by the following film cutter 7 becomes the cutting point N ₂ of the packaging film unit 41 that is subsequently formed.
Next, as the suction head 8 moves from point B to point C, it is rotated 90 degrees by the attitude control means 13 to 16 (this process is shown in FIG. 5), and the single packaging film 41 that is being suctioned is At the same time, the lower heat welding means 9 operates to close the pair of heaters 9a and 9b, and heat weld the raised single packaging film 41 by sandwiching the lower end 41a of the single packaging film 41 as shown in FIG. Figure ho}. Thermal welding is carried out up to the transfer point D and is perfectly carried out even at high speeds. Furthermore, as is clear from FIGS. 2 and 3, the filling chute 10 descends and enters the upper end of the packaging film unit 41. Then, as these items sneak under the weighing table 30 and one of the packaged object weighing pockets 31 synchronously overlaps directly above the filling chute 10, the shutter plate 32 is opened at point E in FIG. , a fixed amount of the material to be packaged is dropped into the filling chute 10, and then fed and filled relatively quietly into the packaging film unit 41. The material to be packaged is supplied to the upper surface of the weighing table at the portion _G in FIGS. It is clear that a scraping plate 42 to which a suitable member (not shown) is fixed is provided in contact with the upper surface of the weighing table 30 in order to accommodate the object to be packaged. The packaging film unit 41 then passes through the weighing table 30 and moves toward a delivery point D located at a relatively long distance over approximately half the circumference. Even in high-speed packaging, during this movement, the above-mentioned items to be packaged are separated by a single packaging film 4
By taking a relatively long time to move from point E to point D, even if the packaged material is a fine powder such as stomach powder, it will settle stably at the inner bottom of the container 1. Eliminates powdery bite. Thus the lower end 4
Immediately before the single packaging film 41 sealed with 1a and filled with the object to be packaged reaches the delivery point D,
The filling chute 10 rises and is removed from the filled packaging film unit 41. When the transfer point D is reached, the suction force of the suction head 8 is released and the second
The upper heat welding means 36 that passes through the moving path F ₂ grips the upper end 41b of the filled packaging film unit 41 with its pair of heaters 36a and 36b, and at the same time the lower heat welding unit 9 opens, thereby separating the filled packaging film unit. 41 is drawn into the second movement path _F2 ,
While moving, the lower end portion is sealed, and the product is discharged at point H in FIG. 1 as a packaged product as shown in FIG. 8. Such wrapping operations are performed continuously at high speed.

In addition, at point A in FIG. 1, it is necessary to pass the supplied tube-shaped packaging film 4 between the fixed blade 7a and the movable blade 7b of the film cutter 7 and between the clamp members 7c and 7d. be. Therefore, in the cutter, as shown in Figures 6 and 7,
The fixed blade 7a and the clamp member 7c are fixed to the turntable 5, and the movable blade 7b and the clamp member 7d are fixed to the turntable 5.
The sixth
After the tubular packaging film 4 is passed through it in the lying down state as shown by the solid line in the figure, it is raised up and clamping and cutter operations are performed. Therefore, the code 44
1 indicates a cam roller for this raising/lowering operation, and reference numeral 45 in FIG. 1 indicates a cam that engages with the cam roller 44.

(Effects of the Invention) As described above, according to the automatic packaging filling device of the present invention, in the process of continuously horizontally feeding the tube-shaped packaging film to the filling part of the packaged object, the horizontally feeding movement path is Adjacent to the movement path is a simple guide means consisting of a rod-shaped member that guides the pulling of the packaging film continuously from the horizontal direction into the movement path via the holding means as the movable body moves along the movement path. By providing this, it is possible to eliminate the conventionally employed supply device for supplying and driving the packaging film, and at the same time, most of the maintenance and inspection work around the guide means of the supply section can be omitted.
Furthermore, the flow of the packaging film is rational and can be sufficiently followed to accommodate high-speed filling, making it possible to significantly increase productivity.

Furthermore, by means of a crank and cam mechanism linked to the movement of the movable body, the suction head of the holding means horizontally and horizontally rotates the tubular packaging film of one bag's length by 90 degrees around the horizontal axis passing through the head. In addition to being able to stand up smoothly and quickly in a space-saving environment, a filling chute is provided above each suction head that can be raised and lowered, and a cam mechanism allows the filling part of the packaged material to be positioned in a timely manner. The filling operation can be carried out reliably without interrupting the movement of the movable body by lowering the movable body at a certain position and then returning it to the upper position, which facilitates speeding up of the apparatus.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a schematic plan view of the entire structure, FIG. 2 is a longitudinal cross-sectional side view of the packing material filling section, FIG. 3 is an enlarged view of the main part of FIG. 2, and FIG. The figure is a longitudinal cross-sectional side view of the single packaging film delivery section,
The figures are diagrams explaining the operation of the suction head, Figures 6 and 7.
The figure is an explanatory diagram of the operation of the film cutter.
F is a diagram for explaining the film forming operation process. (Explanation of symbols) 1... Forming pipe (guiding means), 4... Tube-shaped packaging film, 5... Turntable (moving body), 6... Adsorption means (holding means), 7... Film cutter, 8... Adsorption head ,
9... Lower heat welding means, 10... Filling chute, 12
...Head shaft, 13-16...Crank and cam mechanism, 23...Elevating rod, 25-27...Cam mechanism,
28...Packaged material filling section, _F1 ...Movement route.

Claims (1)

[Claims] 1 Packaging film holding means including suction heads that utilize air suction force and are disposed at equal intervals on a movable body that moves along the horizontal traverse movement path of the tubular packaging film; A film cutter for cutting, a lower heat welding means for sealing the lower end opening of the cut packaging film alone, and the moving path so as to fill the packaging film sealed at the lower end with the packaged item from the upper end opening. In an automatic packaging filling device comprising a filling chute that is placed at a fixed position and can be raised and lowered, and a packaging material filling unit that cooperates with A guide means consisting of a hollow or solid rod-shaped member is provided on the movement path for guiding the moving body to be smoothly drawn in through the suction head of the holding means as the moving body continuously moves along a line forming an acute angle. The suction head is placed adjacent to the suction head, and after the tube-shaped packaging film is cut into a length equivalent to one bag by the film cutter, the suction head is rotated by 90 degrees around the horizontal axis of the suction head as the movable body moves. A crank and cam mechanism for raising the suction head is provided at the end of the head shaft and in the vicinity thereof, and the filling chute is provided so as to be movable up and down above each suction head, and is moved when the filling chute reaches the position of the filling part for the packaged objects. 1. An automatic packaging filling device, characterized in that a cam mechanism is provided at the end of the lifting rod of the filling chute and in the vicinity thereof, for lowering the filling chute as the body moves, and then raising and returning the filling chute.