JP6453259B2 - Tube film packaging mechanism - Google Patents

Description

  The present invention relates to a tubular film packaging mechanism formed so as to heat-seal a tubular film containing excrement, waste, etc. (hereinafter referred to as contents) and to surely cut the seal portion.

  Conventionally, a technique for accommodating contents in a tubular film and packaging the contents by sealing the film in an appropriate accommodation unit has been proposed by Patent Documents 1 to 4, etc., and some have been put into practical use. .

  In the sealed package mechanism of the contents disclosed in Patent Documents 1 to 4 and the like, a film cut formed by folding a tubular film in a zigzag shape in its length is set in a toilet bowl as an example and formed in the toilet bowl. Below the feed roller, the feed port of the contents, the feed roller disposed below the loaded port of the film and toilet and holding the left and right end portions in the width direction of the tubular film, and the feed roller It is formed by a heat seal portion mainly composed of a linear heater which is arranged and made to advance and retreat with respect to the side surface of the film. The package mechanism operates as follows.

  First, the tubular film folded into a film cassette shape is heat-sealed with the leading end of the container (package) as the bottom of the container (package), and the film set in the toilet bowl is sent downward by a feed roller to a standby state. When the contents are put into the film, the film is further fed downward by the feed roller. This feed is a feed for positioning the portion to be cut by heat sealing of the film into which the contents have been placed (input port = entrance to be sealed of the package) so as to face the linear heater. When the film inlet is positioned at the heat seal part, the film feeding by the roller is stopped there, and the stopped film inlet (opening) is heat sealed by the heater and cut to form one package, It was a form in which the part below the cut part of the package (the package containing the contents and the input port heat-sealed) was dropped by its own weight.

  However, if the film is a natural fall type drop due to its own weight such as the contents of each package formed by heat sealing and cutting by a heater, a part of the film to be cut by heat sealing (heat sealing and The so-called burrs produced by cutting remain in the vicinity of and around the heater, and the remaining part melts in each heat seal due to the heat of the heater. It was found that the film and the film above it were connected to each other without being cut off, thereby inhibiting the natural fall of the package.

  In order to solve the above problem, in the invention of Patent Document 3, when heat sealing and cutting are completed, the feed roller is rotated in the direction opposite to the feed direction, and the fed film is fed back by a small amount (upward). The upper portion of the film that is cut by heat sealing is separated from the falling lower portion.

  With the above solution, it seemed that the problem that the package side of the film in the heat seal and cut part did not fall seemed to be solved at first glance, but actually the package dropped even if the film was cut and the feed roller was reversed. The inconvenient state of not doing came to occur. It has been found that this inconvenient situation occurs when the number of times of heat sealing and cutting of the film increases, as in the case where the conventional feed roller is not reversed.

Japanese Utility Model Publication No. 4-56607 Japanese Patent No. 3487784 Japanese Patent No. 4349524 Japanese Patent No. 4470859

  Therefore, in the present invention, when contents are put into the film from the inlet of the tubular film set in the toilet, the film containing the individual contents is cut by heat sealing the inlet with a heater. In the tubular film package mechanism that is sequentially dropped as a single package down the toilet bowl, the cut package is not separated from the upper film, so that it does not fall naturally. It is an object to provide a package mechanism for a tubular film.

The structure of the package mechanism of the present invention made for the purpose of solving the above problems is as follows.
The tube-shaped film into which the contents are charged is fed downward by a feed roller, and the tube-shaped film inlet is disposed between the linear heater disposed opposite to the side of the inlet and the linear heater. In the package mechanism of the tubular film in which the individual package is formed by heat sealing and cutting by the heat sealing part in which the film pressing member and the film pressing member are arranged to face each other, the heat sealing is performed below the heat sealing part. The tube-shaped film is held and pulled downward, and a separation roller for separating the package from the upper tube-shaped film is installed, and the linear heater is advanced by a small amount at or near the advance end of the film pressing member. And the separation roller on the same side as the linear heater is advanced by a minute amount of the linear heater. Is characterized in that synchronization is provided so as to advance small amount.

In the package mechanism of the present invention, a film squeezing mechanism that narrows the diameter of the tubular film fed by the roller may be disposed between the feed roller and the heat seal portion.
By providing the film squeezing mechanism, the opening width of the film that is heat-sealed by the heat-sealing part can be narrowed to a width that facilitates heat-sealing and cutting by the heater and the pressing member.

In the package mechanism of the present invention, it is preferable that the heat seal portion fixes the heater in a fixed position with the film inlet portion in between, and advances and retracts the film pressing member with respect to the heater. Since the wiring to the heater does not move by fixing the heater side in a fixed position, it is advantageous in the maintenance and durability of the heater and the wiring layout and connection during manufacture, or wiring during use.
The above configuration of the present invention is not intended to exclude the fact that the film pressing member is fixed and the heater is moved toward the pressing member, contrary to the above.

  The present invention relates to a tube-shaped film in which contents such as excrement are put into a tube-shaped film and the film is heat-sealed by a heat-seal portion every time the contents are loaded to form a package of individual packages. In the package mechanism, since a separation roller for pulling the heat-sealed film downward is provided below the heat-sealing part, there is an inconvenience that the film cut by the heater does not separate above and below the cut line. Absent.

The perspective view which shows the outline of the external appearance of the toilet apparatus to which this invention is applied. The typical front sectional view for demonstrating the heat seal part and package mechanism with respect to the tubular film of the toilet apparatus of FIG. FIG. 3 is a schematic front sectional view for explaining the operation of the package mechanism of FIG. 2. FIG. 3 is a process diagram schematically showing the operation processes (a) to (c) of the separation roller for pulling the film downward in the package mechanism of the present invention. The process chart which showed the operation | movement process (a)-(c) of the film feed roller and heat seal part in the conventional package mechanism in the typical cross section.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view for explaining an outline of a moving toilet device 1 to which the present invention is applied. In FIG. 1, 11 is a housing forming a toilet device body, and 12 is installed in an opening formed on the upper surface of the housing 11. The toilet seat 13 is a toilet bowl disposed inside the casing 11 so that the opening 13a communicates with the central hole 12a of the toilet seat 12, and 20 is a heat seal section disposed below the toilet seat 13 inside the casing 11. The package mechanism 30 includes a control unit 30 of the package mechanism 20, and is disposed inside the housing 11 in FIG. 1. The control unit 30 may be provided outside the housing 11 via a lead wire.

  In FIG. 1, the toilet seat 12 or the upper surface plate 11a of the housing 11 on which the toilet seat 12 is arranged can be raised and lowered via a hinge at the rear end portion of the housing 11. When the toilet seat 12 or the upper surface plate 11a is erected, a tubular film 21 formed in a film cassette Fc in a zigzag manner in the length direction is formed outside the upper end outer peripheral portion of the toilet 13 (see FIG. 2). It can be set by externally fitting it in the form of the cassette Fc (see FIG. 2).

  In FIG. 2, the tubular film 21 set in the cassette state is pulled out from the outer peripheral side of the folded cassette Fc, passes through the opening 13a of the toilet 13, and is suspended downward in the toilet 13. .

  The tubular film 21 suspended from the inside of the toilet 13 is sent downward with the packaged mechanism 20 containing the contents put in from the opening 13a, and is heat-sealed to cut the seal portion and downward. Naturally dropped.

  2 and 3, the pair of film feed rollers 22 and 23 that feed the film 21 below the opening 13 a of the toilet 13 with the film 21 sandwiched between the two ends of the film 21 on the left and right sides respectively. It arrange | positions so that it may send out downward on both sides.

  Below the film feed rollers 22, 23, two wing-like members having a generally concave shape in plan view are used as film squeezing members 24, 25 in order to narrow down the opening diameter of the film 21 and increase the accuracy and efficiency of heat sealing. The film 21 is disposed so as to be movable in the horizontal direction with respect to the side surface of the film 21 so as to sandwich the film 21.

  Below the film squeezing members 24 and 25, the opening portion of the film 21 that has been sent is heat-sealed and sealed (or sealed), and the linear heater 26 and the above-mentioned are used to cut the sealing portion. A film pressure bonding member 27 that presses the film 21 against the heater 26 is disposed as a heat seal portion.

  The feed rollers 22 and 23, the film squeezing members 24 and 25, the heater 26 and the pressure-bonding member 27 of the heat seal portion shown in FIGS. 2 and 3 are also provided in a known heat seal portion. A film 21 that is cut by heat sealing with the heater 26 and is packaged into individual packages is pulled down from the position of the heater 26 and the pressure-bonding member 27 below the portion of the heater 26. A pair of separation rollers 28 and 29 to be separated is provided with the roller 28 as a driving roller and the roller 29 as a receiving roller.

  In the constituent members from the feed roller 22 to the receiving roller 29 that form the package mechanism of the present invention, the pair of feed rollers 22 and 23 includes a motor M1 as a drive source that uses the roller 22 as a drive roller for feed rotation. Rotating in the direction of the arrow X1 in FIG. 2, the two throttle members 24 and 25 are provided with actuators D1 and D2 as a drive system for advancing and retracting, and move forward and backward with respect to the film 21. The pressure-bonding member 27 that advances and retreats to press-fit is provided with an actuator D3 and advances in the direction of arrow X2 in FIG. The heater 26 is formed so as to advance (displace) to the side of the crimping member 27 by a small amount by the actuator D5 when contacting the crimping member 27 that has advanced.

  Further, the separation rollers 28 and 29 have a motor M2 using the roller 28 as a driving roller and rotate in the direction of the arrow X4 in FIG. 3, and a receiving roller 29 that advances in the direction of the arrow X3 with respect to the driving roller 28 is provided. An advance / retreat actuator D4 is provided.

In each of the actuators D1 to D4, the diaphragm member 25, the pressure bonding member 27, and the receiving roller 29 that exist on the same side with respect to the film 21 and have the same advancing / retreating direction share the respective actuators D2 to D4, and If control is performed so as to advance and retract synchronously, the advance / retreat mechanism can be simplified and the drive system can be simplified. 2 and 3 includes the advance / retreat actuator D1, it may be configured to be fixed at a fixed position in the same manner as the heater 26 and the separation roller 28, or the throttle member 24, the heater 26, The separation roller 28 can be integrally displaced by a minute amount. The minute displacement amount is, for example, about 10 mm to 20 mm, but is not limited to the above numerical value.
Here, when the diaphragm member 24, the heater 26, and the separation roller 28 are slightly displaced forward during the heat sealing operation, the forward displacement operation of the diaphragm member 24, the heater 26, and the separation roller 28 is performed synchronously. In this case, the displacement drive system can be simplified by using a shared structure.

  An outline of the operation of the package mechanism of the present invention having the above configuration will be described with reference to FIG. 4 of the process of the present invention and FIG. 5 of the conventional process. The same reference numerals are used for the same members in FIGS.

  In the packaging mechanism of the present invention shown in FIGS. 2 and 3, the film 21 containing the contents is fed downward by the feed rollers 22 and 23 sandwiching the left and right sides of the film, and the inlet (inlet) of the film 21 is opened. When the aperture is narrowed down by the throttle members 24 and 25 and reaches between the open heater 26 and the pressure bonding member 27, the feed rollers 22 and 23 are stopped, the motor M1 is locked, and the film 21 is positioned. Is done. This state is shown in FIG. This also applies to the conventional mechanism shown in FIG.

  The crimping member 27 is advanced toward the heater 26 by the actuator D3 with respect to the positioned film 21 (FIGS. 4B and 5B). So far, the present invention and the prior art are the same, but in the present invention, the advancement of the pressure-bonding member 27 is accompanied by the advancement of the receiving roller 29 in the separation rollers 28 and 29 by the actuator D4 (see FIG. 4B). . The receiving roller 29 that moves forward is urged in the moving direction by a spring 29a. Note that the configuration of the separation rollers 28 and 29 does not include the prior art of FIG. In FIG. 5, reference numeral 26c denotes a crimping member receiver disposed below the heater block 26a.

  In the present invention, immediately before the crimping member 27 comes into contact with the heater 26, the heater block 26a to which the heater 26 is attached is displaced by a small amount forward (on the crimping member 27 side) by the actuator D5. The film 21 squeezed within the left and right width of the heater 26 between the members 26 and 27 is heat-sealed (welded) at the opening that is sandwiched and squeezed between the heater 26 and the crimping member 27 that generate heat. (See FIG. 4b). In the prior art, the heater block 26a advances forward by a minute amount (see FIG. 5B).

  In the present invention, when the welding action is performed by the cooperative action of the heater 26 and the crimping member 27, the separation roller 28 and the actuator D4 that are displaced forward by a minute amount in synchronization with the minute amount advancement of the heater 26 are directed toward the roller 28. Then, the lower portion of the welded portion of the film 21 is sandwiched by the receiving roller 29 that is advanced and biased forward by the spring 29a (see FIG. 4B). In the prior art shown in FIG.

  In the present invention, when the film 21 is heat-sealed and heat-cut (fused) by the cooperative action of the heater 26 and the pressure-bonding member 27 in the state of FIG. 4B, the film 21 is pressure-bonded to the heater 26. The crimping member 27 is retracted (see FIG. 4C). In synchronism with the retraction of the crimping member 27, the separation roller 28 is rotated by the motor M2 in the direction of the arrow in FIG. 4C (direction X3 in FIG. 3, clockwise direction). The rotation of the separation roller 28 rotates the receiving roller 29gq counterclockwise, and the heat-sealed film 21 sandwiched between the separation roller 28 and the receiving roller 29 has a portion below the sandwiching portion at X5 in FIG. Displaces downward. As a result, a dividing force acts between the part of the film receiving the downward displacement force by the separation rollers 28 and 29 and the film 21 above the part and in the part of the heater 26. The film 21 is surely divided (cut) at this portion.

In the prior art, when the film 21 is heat-sealed and cut by the heater 26, the film 21 is held between the pressing member 27 and the receiving member 26c, and in this state, the feed rollers 22 and 23 are moved below the film 21. The film 21 above the heater 26 is pulled upward and cut in the direction opposite to the direction of feeding, but the welded part of the package below the part of the heater 26 adheres to the heater block 26a. As mentioned above, there is a problem that does not fall.

  However, in the package mechanism of the present invention, the film to be cut by being heat sealed by the heater 26 and the crimping member 27 is pulled downward by the separation rollers 28 and 29 below the heat sealed and cut portion. Since the film 21 is surely cut and the individual package is naturally dropped, even if the fusing film residue adheres to the heater 26 and has an adhesive action, the film package is naturally dropped. The unique effect of not being disturbed is obtained.

DESCRIPTION OF SYMBOLS 1 Toilet apparatus 11 Housing 12 Toilet seat 20 Film packaging mechanism Fc Film cassette 21 Tubular film 22, 23 Feed roller 24, 25 Drawing member 26 Heater 27 Pressure bonding member 28, 29 Separation roller D1-D3 Actuator M1, M2 Motor 30 Control part

Claims (5)

The tube-shaped film into which the contents are charged is fed downward by a feed roller, and the tube-shaped film inlet is disposed between the linear heater disposed opposite to the side of the inlet and the linear heater. In the package mechanism of the tubular film in which the individual package is formed by heat sealing and cutting by the heat sealing part in which the film pressing member and the film pressing member are arranged to face each other, the heat sealing is performed below the heat sealing part. The tube-shaped film is held and pulled downward, and a separation roller for separating the package from the upper tube-shaped film is installed, and the linear heater is advanced by a small amount at or near the advance end of the film pressing member. The separation roller on the same side as the linear heater Packaging mechanism of tubular film, characterized in that provided so as to advance a small amount in synchronism with the advance. 2. The tubular film packaging mechanism according to claim 1, wherein a film squeezing member for narrowing the diameter of the tubular film fed by the feed roller is disposed between the feed roller and the heat seal portion. Heat-sealed portion is in between the inlet portion of the tubular film is provided a linear heater in position, according to claim 1 or 2 of the packaging mechanism is provided so as to advance and retreat the film pressing member with respect to the linear heater. A film pressing member facing a linear heater with a tubular film in between, a film squeezing member on the same side as the film pressing member with respect to the tubular film, and a separation roller on the same side as the film squeezing member The package mechanism according to any one of claims 1 to 4, wherein the common drive system is used to advance and retract synchronously toward each other side. The film diaphragm member on the same side as the linear heater regard tubular film, the linear heater of any of the packaging mechanism of claims 1 to 5 in synchronization with the small amount advance provided so as to advance a small amount.

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