JPH0824815A - Method and apparatus for removing foreign matter bonded to inner surface of filling container - Google Patents

Abstract

PURPOSE:To use a container having foreign matter bonded to the inner surface thereof as a filling container by certainly removing the foreign matter and to automatically and inexpensively remove the foreign matter. CONSTITUTION:In a filling container such as a tube 10 constituted by externally fitting the one end opening of a tube member 12 to the outer peripheral part of a disc-shaped shoulder part 11 having a mouth part 11a provided with a hole, at first, the inner surface of the shoulder member 11 is buffed by a buffing jig 20 and the buffed surface of the shoulder part 11 is sealed with a seal member to demarcate a space having the buffed surface as a partition wall and this space is sucked while compressed air is ejected to the buffed surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for removing surface-adhered foreign matter from a filling container such as food or toothpaste, and more particularly to a filling container containing at least a part of a resin or light metal molded product, The present invention relates to a removal method and apparatus suitable for removing foreign matter in a tubular container configured by fixing a tube to a mouthpiece member and capable of removing foreign matter mixed and kneaded into a resin molded product.

[0002]

2. Description of the Related Art In a filled container, a substantially disk-shaped shoulder member having a central opening is formed by resin injection molding or the like, and a resin laminated sheet is formed on the outer periphery of the shoulder member. It is configured by fitting and fusing the opening at one end. Then, the filling container is filled with the content from the other end opening of the tube in a state where the other end of the tube body is opened, and the other end opening of the tube body is closed after the filling and shipped.

In the above-mentioned filling container, foreign matter adhering to the inner surface may cause a quality problem, and particularly in the case of a food container, it becomes an essential defect in hygiene, and
The foreign substances adhering to the outer surface and the food contents are misunderstood to the consumer, and it becomes a serious defect as a product. Therefore, the foreign substance should not adhere to the inner surface of the shoulder member, the tube body, or the like. For this reason, in the prior art, JP-A-6-43106 or JP-A-5-215687 is used.
The presence or absence of foreign matter is inspected using the surface inspection device described in Japanese Unexamined Patent Publication, etc., and the container in which foreign matter is detected is cleaned by an operator, regenerated, or disposed of as a defective product. It was taken.

[0004]

However, in the prior art, the filling container with foreign matter adhered to the container is merely cleaned by an operator or disposed of, and the former cleaning is a work. Not only does this lead to an increase in man-hours, and the latter disposal is not only against the demands for resource saving and cost reduction, but it is also required to manufacture a spare filling container that anticipates a defective rate, which complicates the manufacturing process. There's a problem. The present invention has been made in view of the above problems, and can reduce the number of working steps, and can save resources, and further, the manufacturing cost can be reduced, and the surface of the filling container without complicating the manufacturing process. An object of the present invention is to provide a method for removing adhered foreign matter and an apparatus therefor.

[0005]

In order to achieve the above object, the invention according to claim 1 is a removing method for removing foreign matters adhering to the inner surface of a filling container, wherein the inner surface of the filling container is a polishing tool. After buffing with a buffing material, the buffing surface is airtightly surrounded to define a space, and pressurized air is jetted into the space toward the buffing surface to suck and remove the pressurized air. I decided to do it.

According to a second aspect of the present invention, there is provided a removing device for removing foreign matter adhering to the inner surface of the filling container, which comprises a buffing mechanism for polishing the inner surface of the filling container with a buff material of a polishing tool. A defining member having a pressurized air jetting part connected to a pressurized air supply source and a suction part connected to a negative pressure source is formed on the filling side of the filling container, and the pressurized air jetting part forms the inner surface of the container. And a dust suction mechanism that sucks the compressed air from the suction portion while injecting the compressed air.

The inventions according to claims 1 and 2 are as follows:
The filling container is a tube in which one end opening of a tube body having both ends opened is fixed to the outer circumference of a disk-shaped shoulder member having a holed mouth portion, and the buff material is wool felt, urethane. Of sponge rubber, horsehair brush or polyester net, or a compression molding of these, and an abrasive surface for the inner surface of the hole, the inner surface of the shoulder member and the inner surface of the tube body (claim 3). ), The filling container is a tube in which one end opening of a tube body having both ends opened is fixed to the outer periphery of a substantially frustoconical shoulder member having a holed mouth portion,
The polishing tool is configured such that a buff material for polishing the inner surface of the mouth portion is fixed to the central portion of the truncated cone-shaped holder member, and a plurality of buff materials for polishing the inner inclined surface are fixedly provided on the tapered surface of the holder member. The buff material is wool felt, urethane sponge rubber, horsehair brush or polyester net, or a mode in which these are compression molded (claim 4)
In addition, it is possible to adopt a mode (claim 5) in which pressurized air obtained by ionizing the pressurized fluid injected into the space is used.

[0008]

According to the first and second aspects of the present invention, since the surfaces of the filling containers in which the adhesion of foreign matter is detected or the total number of the filling containers are buffed, not only the foreign matter adhering to the surface but also the resin. It is possible to reliably remove even foreign matter mixed in the shoulder member during molding or the like. After this, the buffing surface is surrounded airtightly (watertightly) to define a space with the buffing surface as the defining surface, and a pressurized fluid is jetted into this space toward the buffing surface, At the same time, since the space is connected to a negative pressure source to suck the ejected fluid, it is possible to reliably remove foreign matter removed by buffing and dust generated by buffing, and ensure hygiene as a food container. To be done.
And, from buffing to fluid injection and suction, it can be performed automatically without bothering the operator, and the work man-hours can be reduced. Moreover, it is not necessary to dispose of the manufactured filling container, which saves resources and costs. Can be reduced.

Further, according to the third and fourth aspects of the invention, since the soft buffing material such as sponge rubber is used for polishing, the surface of the container can be prevented from being scratched. Further, according to the invention described in claim 4, since the ionized pressurized air is jetted, it is possible to effectively remove the dust charged with static electricity by the buffing, and it is also possible to obtain the sterilizing effect.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention, FIG. 1 is a schematic view of a state in which the outer surface of a filling container is buffed, FIG. 2 is a schematic view of removing foreign matter adhering to the inner surface of the filling container,
3a is a sectional view of the buffing tool, FIG. 3b is a front view of the tool, and FIG. 4a is a schematic view of a state in which the inner surface of the filling container is polished.
FIG. 4b is a schematic view of a state in which foreign matter attached to the outer surface of the filling container is removed.

In this embodiment, a food filling tube (hereinafter referred to as "tube") is used as a filling container, and after buffing the inner surface of the tube 10 (inner surface buffing step), foreign matter on the inner surface is removed. Then, the outer surface of the tube 10 is buffed (outer surface buffing step) to remove foreign matter adhering to the outer surface by suction (outer surface foreign matter removing step). Needless to say, the above-described series of treatments may be performed not only on the tube in which foreign matter is found to be attached by inspection using the inspection apparatus as described above after manufacturing, but also on all manufactured tubes 10. It is possible.

Here, as shown in FIGS. 1 and 2, the tube 10 conveyed to the inner surface buffing step has a substantially disk-shaped shoulder member 11 formed by resin injection molding and the like, and this shoulder member. 11 has a tube body 12 whose one end opening is externally fitted, and an opening edge portion of the tube body 12 and an outer peripheral portion of the shoulder member 11 are gas-liquid tightly fixed by heat fusion or the like. There is. The shoulder member 11 has a mouth portion 11a having a hole in the center, which protrudes outward, and a cap 13 is screwed onto the mouth portion 11a. The tube body 12 is formed by molding a resin laminated sheet into a cylindrical shape.

Then, in the inner surface buffing step, as shown in FIG. 1, the cap 13 of the tube 10 or the shoulder member 11 is gripped to open the other end of the tube body 12 largely, and the other end of the tube body 12 is opened. A buff polishing tool (buff polishing mechanism) 20 is inserted into the tube body 12 through the opening, and the buff polishing tool 20 is rotated to polish the inner surface of the shoulder member 11. The buffing tool 20 has a rotary shaft 2
A buff member 22 formed into a substantially truncated cone shape matching the inner surface shape of the tube body 11 is fastened to the tip of the lock body 1 with a lock nut 23. The buff material 22 includes a columnar portion 22a for polishing the inner surface of the mouth portion 11a of the shoulder member 11 and a truncated cone portion 22b for polishing the tapered surface inside the shoulder member 11.
And are integrally molded. The buff material 22 can be appropriately selected and used according to the material of the tube body 12. Specifically, wool felt, polyester cloth or net, urethane sponge or horse hair brush, or these materials can be used. A compression molded product is used.

The buffing tool 20 can also be constructed as shown in FIGS. 3a and 3b. That is, in this buffing tool 20, a substantially conical holder member 24 is screwed onto the tip of a rotary shaft 21 and fixed by a lock nut 23, and a buff material 25 having a substantially cylindrical shape is attached to the tip of the holder member 24.
However, plural (6 in this embodiment) buff members 26 are fixed to the inclined side surfaces of the holder member 24. Similar to the buff material 22 described above, these buff materials 25 and 26 can be appropriately selected and used depending on the material of the shoulder member 11, and specifically, wool felt, polyester cloth or net, and urethane material. A sponge or horse-hair brush, or a compression-molded product of these is used.

In the subsequent inner surface foreign matter removing step, as shown in FIG. 2, the cap 13 of the tube 10 is buried in the lower mounting jig 31 and held in an inverted state, and the other tube body 12 of the tube 10 is removed. The end opening (upper end opening) is hermetically sealed by a sealing member (defining member) 32. Sealing member 32
Has a downward tapered fitting portion 32a and a suction passage 32b opening at the tip of the fitting portion 32a. The suction passage 32b is coaxial with the shoulder member 11 from the tip opening. An injection pipe 33 extending to the vicinity of the inner surface is provided. The fitting portion 32a of the sealing member 32 is hermetically fitted to the other end opening of the tube body 12 of the tube 10 to seal the tube 10, and in this state, the suction passage 32b is connected to a negative pressure source (not shown). In addition, the injection pipe 33 is connected to a pressurized air supply source (not shown), and the pressurized air ionized from the tip of the injection pipe 33 is jetted toward the inner surface of the shoulder member 11 to blow away foreign matters and dust, These foreign substances are collected by a negative pressure source filter or the like.

In this step of removing the foreign matter on the inner surface, ionized pressurized air is jetted, so that the foreign matter and the like attached to the inner surface due to electrostatic charge can be reliably and easily removed. That is, in the buffing step, dust or the like is charged with static electricity and adheres to the inner surface of the tube 10. However, by injecting pressurized air ionized with a polarity opposite to that of the dust or other static charge, these dusts can be easily removed. Can be removed. The lower placement jig 31, the sealing member 32, and the injection pipe 33 described above constitute a dust suction mechanism.

Next, the tube 10 is conveyed to the outer surface buffing step, and the shoulder member 1 is transferred in the outer surface buffing step.
Buff the outer surface of 1. In this outer surface buffing step, as shown in FIG. 4A, a buffing tool (buffing mechanism) 41 that is rotationally driven on the mounting jig 60 is supported so that it can be raised and lowered, and the tube 10 is moved by the mounting jig 60. The buffing tool 4 by holding the shoulder member 11 in an upright position with the shoulder member 11 positioned above.
1 is lowered and driven to rotate, and the outer surface of the shoulder member 11 of the tube 10 is buffed by the buffing tool 41. The mounting jig 60 has a rod shape that can be inserted into the tube body 12 of the tube 10, and a suction hole 60 a communicating with the vacuum source is opened in the tapered surface of the tip, and the shoulder member 11 of the tube 10 is opened.
Adsorb the inner surface of.

The buffing tool 41 has a holder member 42 in which a hole 42a having a shape opposite to the outer surface shape of the shoulder member 11 is formed.
Is fastened to the rotary shaft 43 and fixed with a lock nut 44, and a plurality of buff members 45 for polishing the outer peripheral surface of the shoulder member 11 and a buff member 46 for polishing the outer surface of the mouth portion 11a are provided on the inner surface of the hole 42a of the holder member 42. It is configured by fixing. The buff material for polishing the outer peripheral surface is substantially rod-shaped and arranged at equal intervals in the rotation direction, and the buff material 46 for polishing the mouth portion 11a has a bottomed cylindrical shape having a hollow portion into which the mouth portion 11a can be fitted. These buff materials 45,
Similar to the buff members 24 and 25 described above, 46 is formed of a horsehair brush or the like.

In the outer surface foreign matter removing step following the outer surface buffing step, the tube 10 is held in an inverted state by the mounting jig 60 and sealed in the shoulder member 11 of the tube 10 as in the outer surface buffing step. Material (defining material)
Cover 51. The sealing member 51 has a hollow portion 51a in which a fitting hole is opened in a lower portion in the figure, and an inlet port communicating with a pressurized air supply source (not shown) is opened in the hollow portion 51a in the upper portion in the figure. And an outlet port communicating with a negative pressure source (not shown) is opened at a side portion in the figure. The sealing member 51 is covered with the tube 10 in an inverted state so that the shoulder member 11 of the tube 10 is fitted into the fitting hole, and the outer peripheral surface of the shoulder member 11 is used as a drawing wall to hermetically define a space. In this state, ionized pressurized air is jetted from the inlet port, and the jetted air is sucked from the outlet port.
Therefore, similar to the above-mentioned inner surface foreign matter removing step, it is possible to reliably remove the adhered foreign matter and dust generated by the buffing.

As described above, in this embodiment, after the inner and outer surfaces of the shoulder member 11 are buffed, the space is hermetically defined by using the buffed surface as a drawing wall, and the ionized air is jetted into the space. Since it is sucked by suction, it is possible to separate and remove not only the foreign matter adhering to the surface but also the foreign matter mixed in at the time of molding, and dust and the like for buffing does not remain, so that the hygiene of the food container is ensured. Therefore, the tube 10 from which foreign matter has been removed can be used as a food container, does not need to be discarded, and can save resources and reduce costs. Then, each process can be continuously performed automatically by using an automatic machine, and it is possible to reduce the number of steps and the manufacturing cost.

Needless to say, the tube 10
The order of buffing the inner surface and the outer surface, and the posture of the tube 10 at the time of buffing can be arbitrarily determined according to the shape of the filling container such as the tube 10 and the convenience of the process. Further, prior to the buffing of the present invention, if dust or the like is removed to some extent by pressurized air or the like in advance, and then the method of the present invention is applied, contamination of the buff material can be minimized and the buff material can be made long-lasting. Further, in the above-described embodiment, the buffing and the suction removal of the foreign matter are performed with the tube body 12 and the shoulder member 11 assembled, but the shoulder member 11 alone or the tube body 12 alone may be buffed. it can. Further, although the tube 10 for food filling is exemplified in the above-mentioned embodiment, the present invention can be applied to various filling containers, and the "food" in the present specification means something to be put in the mouth, for example, toothpaste. It is a concept including etc.

[0022]

As described above, according to the first and second aspects of the invention, since the surface of the filling container is buffed,
It is possible to reliably remove not only the foreign matter adhering to the surface but also the foreign matter mixed in the component during molding or the like. After this, the buffing surface is surrounded airtightly (watertightly) to define a space with the buffing surface as the defining surface, and a pressurized fluid is jetted into this space toward the buffing surface, At the same time, the space is connected to a negative pressure source to suck the ejected fluid. Therefore, it is possible to reliably remove the foreign matter removed by the buffing and the dust and the like generated by the buffing, the hygiene of the food container is ensured, there is no need to dispose, and resource saving and cost reduction can be achieved. Can be achieved. Furthermore, the process from buffing to fluid injection and suction can be automatically performed without bothering the operator, and the number of work steps can be reduced.

In the inventions according to claims 3 and 4, since polishing is performed by using a soft buff material such as sponge rubber, it is possible to prevent the surface of the container from being scratched. Further, in the invention according to claim 5, since the ionized pressurized air is jetted, it is possible to effectively remove the dust charged with static electricity by the buffing and to obtain the sterilizing effect.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a state in which buffing is performed on the inner surface of a filling container in the apparatus for removing surface-adhered foreign matter of a filling container according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view schematically showing a state in which the adhered foreign matter on the inner surface is removed by suction in the same apparatus.

FIG. 3 shows a polishing tool used for buffing an outer surface of the apparatus, where a is a sectional view and b is a front view.

FIG. 4 is a diagram schematically showing a state in which a foreign substance on the outer surface is buffed in the apparatus, and a state in which the foreign substance on the outer surface is sucked and removed by b.

[Explanation of symbols]

 Reference Signs List 10 tube (filling container) 11 shoulder member 12 tube body 13 cap 20 polishing tool 22 buff material 22a columnar portion 22b truncated cone portion 24 holder member 25, 26 buff material 31 mounting jig 32 sealing member (defining member) 32a Fitting part 32b Suction passage 41 Buffing tool 42 Holder member 45,46 Buffing material 51 Sealing member (defining member) 51a Hollow part 60 Mounting jig

Claims (5)

[Claims] 1. A removal method for removing foreign matter adhering to the inner surface of a filling container, which comprises buffing the inner surface of the filling container with a buff material of a polishing tool, and then hermetically surrounding the buffed surface. A method for removing foreign matter adhering to an inner surface of a filling container, characterized in that a space is defined and the pressurized air is ejected toward the buffing surface while the pressurized air is sucked and removed. 2. A removing device for removing foreign matter adhering to the inner surface of a filling container, comprising a buff polishing mechanism for polishing the inner surface of the filling container with a buff material of a polishing tool, and a pressurizing air communication source. A defining member, in which a suction unit communicating with a compressed air jetting unit and a negative pressure source is formed, is attached to the filling side of the filling container,
An apparatus for removing foreign matter adhering to the inner surface of a filled container, comprising: a dust suction mechanism that ejects pressurized air from the pressurized air jetting portion onto the inner surface of the container while sucking the air from the suction portion. 3. A tube in which the filling container is formed by fixing one end opening of a tube body having both ends open to the outer periphery of a disk-shaped shoulder member having a holed mouth portion, wherein the buff material comprises: Wool felt, urethane sponge rubber, horsehair brush or polyester net, or compression molding of these, and equipped with an inner surface of the mouth of the mouth, an inner surface of the shoulder member and an inner surface of the tube body. The method for removing foreign matter adhering to the inner surface of a filling container according to claim 1, or the apparatus for removing foreign matter adhering to the inner surface of a filling container according to claim 2. 4. A tube in which the filling container is formed by fixing one end opening of a tube body having both ends opened to the outer periphery of a substantially frustoconical shoulder member having a holed mouth portion,
The polishing tool is configured such that a buff material for polishing the inner surface of the mouth portion is fixed to the central portion of the truncated cone-shaped holder member, and a plurality of buff materials for polishing the inner inclined surface are fixedly provided on the tapered surface of the holder member. 2. The method for removing foreign matter adhering to the inner surface of a filling container according to claim 1, wherein the buff material is wool felt, urethane sponge rubber, horsehair brush or polyester net, or a compression molding of these. A device for removing foreign matter adhering to the inner surface of the filling container described. 5. The method for removing foreign matter adhering to the inner surface of a filling container according to claim 1, or the apparatus for removing foreign matter adhering to the inner surface of a filling container according to claim 2, wherein the pressurized air jetted into the space is ionized.