Shikoku Kakoki Co., Ltd.

Shikoku Kokoki Co., Ltd.

Yoshihiro Saijo

Yasuji Fujikawa

Shigeru Wakabayashi

Tadaaki Kume

Yoshitaka Yamane

Michio Ueda

Takashi Arao

Toshio Kanematsu

Kazuo Ueda

Seizo Kawamura

Takahiro Miyawaki

Mitsuhiro Koike

Shigeru Ueda

A heating device for heat-sealing containers by heating an end forming portion of a tubular container having a rectangular to square cross section, the end forming portion having four generally quadrilateral first to fourth panels to continuous with one another and each having a heating region or to be heated on an inner surface thereof. The heating device has a hot air nozzle in the form of a bottomed tube and fittable into the container end forming portion for heating an inner surface of the container. The nozzle has four side walls to continuous with one another and corresponding to the first to fourth panels to respectively, at least one of the side walls to being provided with a hot air discharge portion or having orifices and to be opposed to the heating region of the corresponding panel or and with a hot air nondischarge portion or other than the discharge portion, the hot air nondischarge portion being at least partly provided with a hot air escape portion or

Heating device for heat-sealing containers

A container of the gabled roof type has a top seal rib and a spout identifying mark formed on a side face of the rib at an end portion thereof providing a spout. The mark comprises cavities and/or protrusions which are tactually perceivable.

Container of gabled roof type having top seal rib and top sealing device therefor

A liquid metering-filling apparatus is provided which includes a container transport conveyor intermittently drivable so as to halt containers one by one at a filling station. A filling nozzle is disposed above a path of transport of containers at the filling station. A metering cylinder houses a piston and has an outlet in communication with the filling nozzle. An inlet check valve is provided at an inlet of the metering cylinder. An outlet check valve is provided at any one of the outlet of the metering cylinder and inside of the filling nozzle. The liquid metering-filling apparatus also includes a driver for causing the piston to perform a cycle of stroking movement every time the conveyor is driven by one pitch. A photoelectric sensor is provided at the filling station for detecting any one of the presence and absence of a container of the plurality of containers at the filling station. A photoelectric sensor is provided at a stop station for detecting any one of the presence and absence of a container of the plurality of containers at the stop station which is immediately preceding the filling station upstream therefrom. The liquid metering-filling apparatus also includes a valve opening-closing member for opening the inlet check valve upon the photoelectric sensor at the filling station detecting the absence of a container of the plurality of containers and the photoelectric sensor at the stop station detecting the presence of a container of the plurality of containers.

Liquid metering-filling apparatus

A filling nozzle includes a vertical tubular nozzle body for receiving the liquid to be filled and supplied thereto forcibly and intermittently, and a rubber tube connected to the lower end of the nozzle body and having an opening at its lower end. The rubber tube is folded at required portions to constrict the opening. The opening is held closed by the elasticity of the rubber tube against gravity acting on the liquid within the nozzle body when the supply of the liquid is discontinued but is opened by the pressure of the liquid when the liquid is supplied to the nozzle body. The nozzle body is provided at its lower end with a tube holding portion having the rubber tube fitted thereover for holding the rubber tube in shape. The tube holding portion is externally in conformity with the inner surface of the rubber tube except at the folded portions.

Filling nozzle having a tube holding portion for holding a rubber tube

A filling nozzle comprising a vertical tubular nozzle body, and at least one perforated plate disposed at a lower-end opening of the nozzle body for preventing a liquid from flowing down under gravity by the surface tension of the liquid. The perforated plate has an opening degree varying from small to great from its center or the vicinity thereof toward its periphery or the vicinity thereof.

Filling nozzle

In a liquid filling machine having a metering cylinder, a piston accommodated in the cylinder with a clearance formed therebetween, and a membrane closing each open end of the clearance to form a closed space, a device for detecting a leak in the metering cylinder comprising a vacuum pipe connected to the metering cylinder in communication with the closed space, an orifice plate inserted in the vacuum pipe for maintaining the interior portion of the pipe upstream from the orifice plate at a pressure lower than a predetermined value when the membrane has no leak with a standard quantity of leakage fluid flowing through the pipe and maintaining the interior portion at a pressure not lower than the predetermined value when the membrane has a leak, and a pressure sensor for detecting the pressure of the upstream interior portion of the pipe and producing a leak detection signal when the detected pressure is not lower than the predetermined pressure.

Device for detecting leak in metering cylinder of liquid filling machine

An apparatus for filling a specified amount of liquid comprises a vertical tubular nozzle having a large-diameter portion intermediately of its height and a valve seat at the edge of an open lower end thereof, a valve upwardly and downwardly movably supported by the filling nozzle and comprising a plug intimately fittable to the valve seat and a stem extending upward from the plug inside the nozzle, a resistance member fixed to the valve stem so as to be positioned in the large-diameter portion for acting against a downward flow of liquid, a spring biasing the valve upward to hold the plug in intimate contact with the valve seat against the gravity on the liquid within the nozzle, a metering cylinder for intermittently feeding the liquid into the nozzle in the specified amount at a time so that the valve is opened by the pressure of flow of the liquid against the spring, and the spring closing the valve when the feed of liquid is discontinued. The large-diameter portion has a diameter gradually increasing as it extends from its upper end downward.

Apparatus for filling specified amount of liquid

An apparatus for filling a specified amount of liquid comprises a vertical tubular filling nozzle, a damper attached to the lower end of the filling nozzle and pivotally movable upward and downward, a vertical rod supported upwardly and downwardly movably inside the filling nozzle, a connecting member connecting the free end of the damper to the lower end of the vertical rod, a spring biasing the vertical rod upward to hold the damper closed against the gravity on the liquid within the nozzle, and a metering cylinder for feeding the liquid to the nozzle in the specified amount at a time to open the damper against the spring. An annular seat facing downward is formed on the inner surface of the nozzle approximately at the midportion of its height. A liquid channel blocking annular member is mounted on the vertical rod so as to come into contact with the seat simultaneously when or immediately before the damper is closed. The volume of liquid fed from the metering cylinder to the nozzle at a time is greater than the volume of liquid to be accommodated in the nozzle in the portion thereof under the blocking member.

An apparatus for filling a specified amount of liquid comprising a metering cylinder having a piston therein, a vertical filling nozzle having an open lower end and feedable with a liquid from the metering cylinder by the operation of the piston, a damper for opening and closing the open lower end of the filling nozzle, a spring biasing the damper to hold the nozzle end closed with the damper while the feed of the liquid is discontinued, and an opening portion adapted to open the damper against the spring simultaneously with or immediately before the start of feed of the liquid with the damper closed and to be subsequently brought out of operative relation with the damper before the feed of the liquid is discontinued so as to render the damper closable by the spring.

An apparatus for filling a specified amount of liquid comprising a metering cylinder having a piston therein, a vertical filling nozzle having an opening at its lower end and forcibly chargeable with a liquid from the metering cylinder by the operation of the piston, a damper for opening and closing the opening of the filling nozzle, a spring biasing the damper so as to hold the damper closed against the gravity acting on the liquid filling the nozzle while the damper is closed with the charging discontinued although permitting the damper to be opened with the pressure of the liquid forcibly charged into the filling nozzle from the metering cylinder, and a closing device adapted to act on the damper in its open state to close the damper when the charging of the liquid is discontinued and adapted to be brought out of action transmitting relation with the damper so as to permit the spring only to hold the damper closed before the charging of the liquid is subsequently started. The closing device includes bumper for mitigating the impact acting on the damper and a damper operating member when the damper is closed.

A packaging machine for preparing sealed containers filled with contents each from a blank having a thermoplastic synthetic resin layer over each surface thereof. The container is recessed in the central portion of its bottom so as to seat stably. A bottom forming end portion of the blank fitted around a mandrel is folded flat and then pressed against the forward end surface of the mandrel by a press member with its press face to form the bottom of the container. The mandrel end surface defines a cavity for recessing the bottom central portion, and a projection complementary to the cavity is provided on the press face of the press member.

Packaging machine

A packaging machine including a rotor having a plurality of radial mandrels each for carrying a container as fitted therearound and intermittently drivingly rotatable so that the mandrels successively stop at processing stations equal in number to the number of the mandrels, a container bottom breaker provided at one of the processing stations, and a container holding device provided at the same processing station as the container bottom breaker and having at least one container pressing member to be pressed against the mandrel at rest at said same processing station over the container fitted around the mandrel.

A blank feeder for a packaging machine for use with folded flat blanks unfoldable into tubes of square to rectangular cross section and having different lengths to form containers of different capacities. The feeder includes a magazine for containing a stack of flat container blanks. The magazine comprises an inclined frame defining a downward delivery opening and having opposite side members, an upper member and a lower member, a pair of blank unfolding pawls provided at the bottom surfaces of the upper and lower frame members and partly projecting into the opening, and a pair of movable blank supports reciprocatingly movable between an upper position above the frame and a lower position below the frame through the opening. The upper frame member is movable by a hydraulic cylinder longitudinally of the frame to adjust the distance between the unfolding pawls to the length of the blank. Blanks are supplied by an elevator to the movable blank supports in the upper position and then placed on fixed blank supports at the frame bottom by lowering the movable supports. When the movable supports are raised to the upper position to remove the remaining blanks from the magazine after packaging, the blanks are transferred from the movable supports onto movable guide rods brought to a fallen position from an upright position on the lower frame member.

Growing community of inventors

Tokushima, Japan

Yoshihiro Saijo