JPH046006A - Cover automatic shut-off method for packaging container and apparatus therefor - Google Patents

Abstract

PURPOSE:To efficiently conduct the shut-off operation of the cover part of a container body at low cost and hygienically by providing a process for carrying a container through a carry ing means in a state, where the cover part of the container body is super posed on the con tainer body, and a process for detent holding a detent part through pressurizing the part with a pressing part while supporting a lower side outer collar through a guide supporting part to shut off the cover part to the container body. CONSTITUTION:When a packaging container in a state, where contents are packed into the container body 2a of the packaging container 2 and then a cover part 2c is superposed on the top surface of the container body via a hinge part 2b and shut (not yet shut off), is carried to a subsequent stage by a carrying means, the packaging container is carried while the under surface of its lower side outer collar 2a1 is supported on both sides by a guide supporting part 4 provided above the carrier path of the carrying means in the middle of said carrier path. At the same time, the pressing parts 15a, 15a, 15b, 15b of rotation parts 15, 15, which are mounted, in the manner of facing by the guide supporting parts, at both ends of several shaft bodies 6, 7 rotating after receiving the driving force of a motor M, press an upper side outer collar 2c1 from above relative to the lower side outer collar supported from the under surface face by the guide supporting part of the container body for the elastic deformation of these collars and engage the lower and upper side outer collars via a detent part composed of recessed and projected parts.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is for automatically closing and locking the lid of a plastic packaging container after filling the contents therein. This invention relates to an optimal automatic packaging container lid closing method and device.

[Conventional technology]

BACKGROUND ART Conventionally, there have been plastic packaging containers for packaging foods (contents) such as cherry blossom mochi, kusa mochi, water sheep mochi, etc., in which a lid is provided on one side of the container body so as to be openable and closable via a hinge.

Conventionally, each step of filling the packaging container with the contents and packaging the container has been performed manually. In other words, there are two steps: a step of automatically sending the contents produced by a molding machine etc. to a conveying means such as a container, a step of arranging the container bodies in the same conveying means with the lids open, and a step of arranging the containers in this way. A process of filling the contents sent out by the conveyance means into the container body which is sequentially conveyed to a later stage, and then bending the lid part at the hinge part against the self-righting property of the container body. The packaging process was completed through a closing process and a process of fixing the closed lid to the container body using a seal or rubber band to prevent it from opening.

Also, recently, instead of using a seal for sealing or a rubber band for tightening to close and secure the lid on the container body, a new type of seal is installed on the lower outer flange on the outer periphery of the container body and on the outer periphery of the lid. For example, by providing a locking part on the upper outer flange, which is composed of a convex part and a concave part that can be freely engaged and detached by elastic deformation, when the lid part is closed, the convex part and the concave part are engaged and the lid part is closed. Improved packaging containers that do not open are on the market.

[Problem to be solved by the invention]

However, the contents were packed by the above method using either the conventional plastic packaging container without a locking part or the latter packaging container with a locking part. Closing the lid of the packaging container (closing the lid and fixing it to the container body) was done manually, which took time and effort, reducing work efficiency. Moreover, especially in the former type of packaging container, a fixing part such as a seal or a rubber band is required as a means for fixing the container main body and the lid part, and therefore, packaging costs are high.

[Means to solve the problem]

Therefore, in order to solve the above problems, this first method invention comprises a container body having a lower outer flange on the outer periphery and a lid part provided on one side of the container body so as to be openable and closable via a hinge part. A conveyance means for conveying a plastic container body to a subsequent stage, which is closed by engagement of the retaining portion, and a conveyance means midway through the conveyance means;
A state in which the lid portion of the container body is superimposed on the container body, comprising a guide support component provided above and a pressing portion vertically opposed to the guide support component and rotatable by receiving the driving force of a motor. the lower outer flange is supported by the guide support component and pressurized by the pressing part to lock the locking part and close the lid part to the container body. We adopted the method of including the process.

In addition, the second device invention is to sequentially convey a plastic container body having a lower outer flange on the outer periphery and a lid portion provided on one side of the container body via a hinge portion so as to be freely openable and closable to a subsequent stage in a predetermined direction. and a guide support part that supports the lower surface of the lower outer flange of the packaging container from left and right above the middle of the transport means. A suitable number of shaft bodies are provided at desired intervals, and the rotary part having a pressing part that presses a reinforcing frame step located on the inner periphery of the upper outer flange of the lid is guided. A method was adopted in which the shaft body was installed at both left and right ends of the shaft body facing the support component.

[Effect]

After the contents are stuffed into the container body of the packaging container, the lid portion is superimposed on the top surface of the container body via the hinge portion, and the container is closed (not yet closed) and transported to a later stage by the transportation means. The packaging container is transported while the lower surface of the lower outer flange is supported from the left and right sides by a guide support component provided above the transport path of the transport means. At the same time, the pressing parts of the rotating parts, which are mounted on both ends of several shaft bodies that rotate under the driving force of the motor so as to face each other by guide support parts, are supported from below by the guide support parts of the container body. The upper outer flange is elastically deformed by applying pressure to the lower outer flange from above, and the lower outer flange and the upper outer flange are engaged through a locking portion consisting of a concave portion and a convex portion. do.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of one embodiment of the present invention will be described below with reference to the drawings, together with the apparatus used.

In FIGS. 1 and 2, 1 is a conveyor or the like, and this conveyor 1 includes a container body 2a filled with contents A manufactured by a molding machine or the like, and a container body 2a filled with the contents A produced by a molding machine or the like.
A plastic packaging container 2 formed from a lid part 2c provided on one side so as to be freely openable and closable so as to selectively take two positions, an open position and a closed position, via a hinge part 2b, is sequentially oriented in a predetermined direction. The packaging container 2 is conveyed to a subsequent stage in the X-axis direction
A substantially gate-shaped mount component 3 having an opening 3a through which the material can pass is provided.

Examples of the contents include foods such as cherry mochi, kusa mochi, and mizuhitsu.

A lower outer flange 2a having a substantially U-shaped cross section is formed downward on the outer periphery of the container body 2a of the packaging container 2 used in this embodiment, and the lower outer flange 2a is formed on the outer periphery of the lid 2C. 2a
An upper outer flange 2c+ is provided which has a substantially U-shaped cross section and faces upward in the unfolded state in which the upper outer flange 2C+ is overlapped and covered, and the lid 2C is superimposed on the four inner corners of the upper outer flange 2C3 to apply pressure. A planar abbreviated recess 2ct is formed in which the outer peripheral edge of the lower outer flange 2a+ as a protrusion is locked when the lower outer flange 2a+ is held.

2C3 is located on the inner periphery of the upper outer flange 2c+, and
This is the reinforcing frame stepped portion connected to C.

Reference numeral 4 denotes a substantially disk-shaped guide support component that is provided in the front part of the opening 3a of the mount component 3, so as to be rotatable around a horizontal plane using a support shaft 5, facing left and right above the top of the conveying means 1. The guide supporting parts 4, 4 support the lower surface of the lower outer flange 2a+ of the packaging container 2 from the left and right, and the inner side of the container body 2a, that is, the same as the X-axis direction The container body 2a is slightly pressed and deformed in the Y-axis direction Y perpendicular to the plane.

Reference numeral 6.7 denotes two shafts rotatably mounted above the transport means 1 in the opening 3a of the mount component 3, one of which is the shaft 6 of the transport means 1. Mounting plates 8, which are installed facing each other across the conveying means 1 in the Y-axis direction Y perpendicular to the X-axis direction Bearing parts 1
0.10, the left and right ends are rotatably inserted and rotated by receiving the driving force of a motor M as a driving source mounted on the upper surface of the upper mounting plate 9. The means for rotating the shaft body 6 by receiving the driving force of the motor M include a pulley 11 installed on the motor shaft m, a pulley 12 installed on one end of the shaft body 6, and a pulley 12 installed on one end of the shaft body 6.
It is formed by power transmission parts such as a bell (13) suspended between 1 and 12. Further, the other shaft body 7 is the shaft body 6
It is rotatably mounted by inserting the left and right ends into the front ends of a pair of left and right side plates 14, 14 forming a movable frame (to be described later), into which the left and right ends are rotatably inserted.

The desired distance between the shafts 6 and 7 is a length slightly shorter than the length l of the lower outer flange 2a+ and the upper outer flange 2c+ of the packaging container 2 in the longitudinal direction.

Reference numeral 15 designates pressing rollers as rotary components installed on the left and right sides of the two shaft bodies 6, 7 so as to be vertically opposed to the guide support component 4.4. This pressing roller 15, 15;1
5 and 15, when the lid portion 2c is superimposed on the upper surface of the packaging container 2 and guided into the opening 3a of the mount component 3 in a closed state, the left and right sides of the upper surface of the lid portion 2C are pressed together. The small-diameter pressing portion 15a and the reinforcing frame step portion 2C'l located outside the small-diameter pressing portion 15a and located on the inner periphery of the upper outer flange 2C1 of the lid portion 2c are connected to the lower outer flange 2a+ of the lower surface. By applying pressure to the container body 2a, the lower outer flange 2a1 as a convex portion is locked in the planar oval-shaped recesses 2cz provided at the four inner corners of the upper outer flange 2c. A device 1 comprising a large diameter pressing portion 15b for preventing the lid portion 2c from opening with respect to the container body 2a.
Reference numeral 6 denotes a feeding belt for receiving the driving force from the motor M which is wound around the pressing rollers 15, 15; 15, 15.

The mount component 3 includes the mounting plate 8.8 which is arranged to face the Y-axis direction Y perpendicular to the X-axis direction X of the conveyance means 1.
and the mounting plate 9 stretched between the mounting plates 8.8.

The movable frame 17 provided in the opening 3a of the mount component 3 is connected to the side plate 1 on which the shaft bodies 6 and 7 are mounted.
4.14 and the connecting bar 1 that connects the side plate 14.14.
8.18 and the free bar provided on the front connecting bar 18.
The joint 19 and the Nand 20, 21 whose lower end is connected to the free joint 19 and screwed into the upper threaded portion are attached to the lower surface of the upper mounting plate 9 on the front end side or in the Z-axis direction Z with the shaft body 7 as the center. It is formed from bolts 22 for movably suspending the side plates 14 and 14 (in the vertical direction).

By adjusting the degree of engagement of the nuts 20 and 21 with the bolts 22, the movable frame 1 is moved around the shaft 7.
7 is rotated in the Z-axis direction Z to adjust the height of its front end side, thereby adjusting the degree of pressure of the pressing roller 15° 15i 15.15 against the packaging container 2.

23, after the contents A are packed into the container body 2a, while the container body 2 is being conveyed to the subsequent mounting component 3 by the conveying means 1, the lid portion 2C is placed in the open position with respect to the container body 2a. 180° from the unfolded state through the hinge part 2b.
It is a guide rod arranged in a predetermined direction with respect to the conveying means 1 in order to automatically guide and move the lid part 2C to a closed state, that is, a closed position by rotating, and this guide rod 23 has a tip end thereof. The proximal end 23b is fixed above the substantially central portion of the conveying means 1 by the mounting bracket 23c so that the side 23a faces outward from the plane as shown in FIG. 1, and the side surface faces downward as shown in FIG. be done.

Reference numeral 24 denotes support plates provided left and right to face each other in order to hold and move both left and right sides of the container body 2a of the packaging container 2- introduced into the opening 3a of the mount component 3; A plate 24.24 is arranged on the underside of the guide support part 4.4 and fixes the lower end of the support shaft 5.5.

Reference numeral 25 denotes a side guide plate provided on one side of the conveying means 1 in order to naturally convey the container body 2 filled with contents in a predetermined direction by the conveying means l. As shown in the figure, a sloped portion 25a is formed to naturally change the orientation of the container bodies 2a introduced from the vicinity of the transport port la, which are unevenly oriented, in the X-axis direction.

Reference numeral 26 denotes a side guide bar installed parallel to the conveyance means 1 in order to prevent the lid portion 2C, which is being guided and closed by the guide bar 26, from becoming unfolded again and opening. It is.

Further, 27 cooperates with the side guide plate 25 in the left and right direction.
That is, in order to move the container body 2a in the X-axis direction while restricting its movement in the Y-axis direction Y, a guide plate 2a is provided approximately in the longitudinal center of the conveyance means 1, facing the side guide plate 25 as necessary. This is a guide rod to be installed.

Reference numeral 28 indicates that the lid portion 2 is attached to the container body 2a by the guide rod 22.
c is in the left-right direction of the lid portion 2C of the closed packaging container 2 (
Mount the packaging container 2 through the opening 3a of the mounting component 3 while restricting its movement in the Y-axis direction (Y) and the vertical direction (Z-axis direction Z).
This guide plate 2 is provided oppositely on the left and right sides of the front end in the opening 3a to guide the rear stage.
The lower surfaces of the lid portions 8 and 28 are formed with inclined cut-out portions 28a and 28a that are raised toward the front for guiding and moving the lid portion 2C while contacting the lid portion 2C.

Sensors 29a and 29b are installed at the front end of the opening 3a of the mount component 3 to face each other on the left and right sides of the conveyance means 1, and when the packaging container 2 as a work passes between the sensors 29a and 29b, the The lid 2C is prevented from being pressed downward and opened by the compressed air jetted from the jetting nozzle 30 provided above the conveying means 1.

One embodiment of this related invention has the above-mentioned configuration, and the operation of the specific invention will be explained below along with the closing operation for closing the lid portion 2C to the container body 2a.

First, there is no difference from the conventional work in that the contents A, which are automatically produced by a molding machine (not shown), are stuffed into the container body 2a of the plastic packaging container 2. At this time, the lid part 2c
As shown in FIG. 1, the container body 2a is in an expanded position at an upper position with respect to the container body 2a.

When the packaging container 2 placed on the conveying means 1 is conveyed to the latter stage as shown in FIG.
Since the container main body 2a is moved and guided by 5a, the packaging container 2 naturally assumes a predetermined orientation and is guided and moved in the X-axis direction.

Then, while the packaging container 2 is being transported in the X-axis direction X by the transporting means 1, the leading end 23a is
The cover 2c is guided and moved by being brought into contact with the guide rod 23, which is disposed facing outward in the plane in FIG. 1, and whose tip 23a is disposed downward in the side surface in FIG. It is rotated 180 degrees from the unfolded state as an open position to a closed position via the hinge portion 2b, and is closed by being overlapped with the container body 2a. In this state, the container body 2a is connected to the sensor 29.
When it passes between a and 29b, compressed air is ejected downward from the ejection nozzle 30 onto the upper surface of the lid part 2C and presses it to prevent it from opening.

Thereafter, inside the opening 3a of the mount component 3, the inclined cutouts 28a, 28a are in contact with the upper surface of the front end of the lid 2C, which overlaps the upper surface of the container body 2a, and the lid 2c is prevented from opening. The packaging container 2 is introduced.

When the packaging container 2 is inserted into the opening 3a, the container body 2
The left and right sides of a are held by support plates 24 and 24,
Moreover, the lower outer flange 2a of the outer periphery is supported by the guide support parts 4, 4 from the left and right on its lower surface, and is pressed against the container body 2a inward, that is, in the Y-axis direction Y, and is elastically deformed. do.

Almost at the same time, the driving force of motor M is applied to pulleys 11 and 12.
; The shaft body 6 is passively connected via power transmission parts such as the belt 13.
rotates, so that the pressing rollers 15° 15; 15.15 as rotating parts installed at both left and right ends of this shaft 6 and the shaft 7 disposed front and rear opposite each other have small diameter pressing portions 15a. , 15a; 15a, 15a are rotated in the X-axis direction X so as to face the conveying means 1 via bells 16, 16 wound around the outer peripheries of 15a, 15a. For this reason, the left and right opposing pressing rollers 15, 15; small diameter pressing portions 15a, 1 of 15, 15
5a; 15a, 15a are pressed against the upper surface of the lid part 2C, and large diameter pressing parts 15b, 15b, 15b on the outside thereof;
15b as described above with the guide support parts 4, 4;
, 4, which is further superimposed on the lower outer flange 2a1 and is located inside the upper outer flange 2c+.
, is strongly pressurized downward. As a result, the lower outer flange 2a as a convex portion of the container body 2a is replaced by the planar abbreviated concave portions 2C2 provided at the four inner corners of the upper outer flange 2C of the lid portion 2c.
By being locked inside, the lid portion 2c is closed against the container body 2a so as not to open, and is moved to the rear stage. At this time, in particular, the large-diameter pressing portion 15 of the pressing roller 15 presses the reinforcing frame step portion 2c3 located on the inner periphery of the upper outer flange portion 2c1 and connected to the lid portion 2c.
The reason why the pressure is applied by b is that the reinforced frame stepped portion 2C3, which has a strong structure, can sufficiently withstand the pressure and deformation becomes excessive without denting.In this way, the lower outer flange 2al It is possible to reliably engage the recess 2C2.

Small diameter pressing portion 15a and large diameter pressing portion 1 of pressing roller 15
5b against the lid part 2c of the packaging container 2, the front end side of the movable frame 17 is moved in the Z direction around the shaft body 6 located at the rear by adjusting the degree of screwing of the nuts 20 and 21 screwed into the bolts 22. Move it in the axial direction Z (vertical direction) to adjust the degree of pressing.

In the above-mentioned embodiment, power transmission parts such as pulleys 11 and 12; belts 13 and 16 are used to rotate the pressing roller 15 as a rotating part by receiving the driving force of the motor M. However, this power transmission component is an example and is not limited thereto. Moreover, in the above embodiment, the number of installed shaft bodies with pressing rollers 15 installed at both ends is 2.
The number of books can be increased or decreased, and the intervals at which they are installed can be freely selected depending on the length of the packaging container.

Further, in the above embodiment, the lower outer flange 2a of the packaging container 2
The locking part for engaging the upper outer collar part 2c+ with the lower outer collar part 2c+ is the lower outer collar part 2a as a convex part, and the recessed part 2cz that can be freely engaged with and detached from the lower outer collar part 2c+. However, this locking part is provided only on the open side of the lid part 2c and the container body 2a, which is opposite to the side where the hinge part 2b is installed. This is sufficient for closing the lid portion 2C. Moreover, the convex portion and the concave portion may be provided upside down in the lower outer collar portion 2a+ and the upper outer collar portion 2c+. Further, the shape and number of the convex portions and concave portions serving as the locking portions are arbitrary.

〔Effect of the invention〕

As described above, in the present invention, after the contents are packed into the container main body, the lower outer flange of the outer periphery of the container main body is supported from the lower surface by the guide component provided above in the middle of the conveying means, and the lid is closed. The reinforcing frame stepped portion located on the inner periphery of the upper outer flange of the container is pressurized downward by the pressing portion of the rotating component that rotates by receiving the driving force of the motor, so that the reinforcing frame stepped portion located on the inner periphery of the upper outer flange of the container body The lid is automatically closed to the container body by the locking portion provided on the upper outer flange of the lid. Therefore, the efficiency of the work of closing the lid on the container body is improved, and there is no need for fixing parts such as seals and rubber bands to close the lid as in the past, so the lid can be closed hygienically and inexpensively. Can perform closing work.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is an explanatory front view of the transport means constituting this embodiment as seen from the front, and Fig. 4. is a cross-sectional view taken in the direction of line II in FIG. 2, FIG. 5 is a cross-sectional view taken in the direction of line II of FIG. It is. DESCRIPTION OF SYMBOLS 1... Conveyance means, 2... Packaging container, 2a... Container main body, 2b... Hinge part, 2C... Lid part, 2aI・
...Lower outer flange, 2C,...Upper outer flange, 2C,...
・Concavity, 2C. ... Reinforcement frame stepped portion, 3... Mount parts, 3a...
Opening, 4... Guide support component, 6, 7... Shaft body,
15... Pressing roller, 15a... Small diameter pressing portion, 15
b...Large diameter pressing part, M...Motor.

Claims (3)

[Claims] (1) Made of plastic that closes when a locking part engages a container body with a lower outer flange on the outer periphery and a lid part provided on one side of the container body so that it can be opened and closed via a hinge part. a conveyance means for conveying the container body to a subsequent stage, a guide support part provided above the middle of the conveyance means, and a pressing part provided vertically opposite to the guide support part and rotatable by receiving the driving force of a motor. a step of transporting the lid of the packaging container in a state superimposed on the container main body by the transporting means; A method for automatically closing a lid of a packaging container, comprising the step of locking the locking portion by applying pressure with a pressing portion and closing the lid portion to the container body. (2) The lower outer flange of the container body is supported by the guide support component, and the reinforcing frame step part located on the inner periphery of the upper outer flange and connected to the lid part is pressurized by the pressing part. 2. The method for automatically closing a lid of a packaging container according to claim 1, further comprising engaging a locking portion. (3) a conveying means for sequentially conveying plastic packaging containers having a lower outer flange on the outer periphery and having a lid that can be opened and closed via a hinge on one side of the container body in a predetermined direction to a subsequent stage; A guide support component for supporting the lower surface of the lower outer flange of the packaging container from left and right is provided above the middle of the conveying means,
A plurality of shaft bodies, which rotate by receiving the rotational force of a motor, are provided at desired intervals on the upper part of the guide support component, and a reinforcing frame located on the inner periphery of the upper outer flange of the lid part. An automatic lid closing device for a packaging container, characterized in that rotating parts each having a pressing part that presses a stepped part are installed at both left and right ends of the shaft body, facing the guide support part.