JP3026764B2 - Method and apparatus for closing container lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method and an apparatus for closing a container lid.

[0002]

2. Description of the Related Art Conventionally, as a distribution container or the like, a pair of lids are pivotally attached to both sides of an opening of a container body, respectively, and an upper fitting portion and a lower fitting portion are provided at the tip of one lid. Provided,
The other lid is provided with an upper fitting part and a lower fitting part also at the tip part. In this container with a lid, the lower fitting portion of the tip of the other lid is engaged with the lower fitting portion of the tip of the other lid, and the lower fitting portion of the tip of the other lid is fitted below the upper fitting portion. By engaging the lower part of the tip of the lid,
The two lids are engaged with each other and closed.

[0003]

However, in the prior art, the operation of engaging and closing the pair of lids on both sides is performed manually, resulting in poor productivity.

[0004] It is an object of the present invention to provide a simple facility in which a pair of lids on both sides are engaged with each other and closed.

[0005]

According to the first aspect of the present invention, a pair of lids are pivotally mounted on both sides of the opening of the container body, respectively, and the width of the tip of one of the lids is set in the width direction. comprising alignment upper mating portion and a lower mating portion, the other will comprise arranges the upper mating portion and a lower mating portion in the width direction of the distal end portion of the lid, the other of the lid below the mating portion on the distal end portion of one of the lid The two lids are engaged with each other by engaging the lower alignment of the tip of the other lid with the lower alignment of the tip of the other lid below the upper alignment of the tip of the other lid. In the method of closing the lid of the container, the lids are not engaged with each other in a semi-closed state, and the lower surface of the top mating portion of one lid is supported by one lid support member, and the other is a hunting case supporting step of supporting the lower surface of the other of the lid support members on mating of the distal end of the lid, whereas
Cover support member from the lower surface of the upper part of the top of one lid
Remove simultaneously, removing from the lower surface of the upper mating portion of the front end portion of the other side of the lid support member and the other of the lid, which was set to be and a step closed hunting case closed by engaging each other hunting case is there.

According to a second aspect of the present invention, in the method for closing a container in which one of the lids is closed in advance and the other lid is open in the method of the first aspect, In, place both lid support members at the opening of the container body,
One of the lid support members is inserted into the lower surface of the upper fitting portion of the tip of one of the lids so that the one lid is in a semi-closed state, and the other lid is rotated from the open state to the closed side to rotate the other lid to the other side. The lower surface of the upper fitting portion of the tip of the other lid is supported on the lid supporting member.

According to a third aspect of the present invention, in the first aspect of the present invention, there is further provided a method of closing a lid of a container having both lids open, wherein the step of supporting both lids comprises the step of: It is arranged in the opening of the main body, and both lids are rotated from the open state to the closed side to support the lower surface of the upper fitting portion of the tip of one lid on one lid supporting member and the other lid supporting member. The upper portion supports the lower surface of the upper mating portion of the tip of the other lid.

The present invention described in claim 4 is the first to third aspects of the present invention.
A container lid closing device used for performing the container lid closing method according to any one of the above, wherein each of both lid support members,
A lid supporting member elevating device positioned at the opening of the container body from the standby position, and each of the two lid supporting members is moved between a lid supporting position for supporting the semi-closed lid and a lid detaching position for detaching from the closed lid. The apparatus has a lid supporting member moving device to be closed and a lid rotating device for rotating the opened lid to the closing side and placing the lid on the lid supporting member.

According to the present invention, the following operations are provided. The container to which the present invention is applied is such that a lower fitting portion of the tip portion of the other lid is engaged with a lower fitting portion of the tip portion of the other lid, and a lower fitting portion of the tip portion of the other lid. The lower lid is engaged with the lower lid to engage the lower lid with each other, thereby closing both lids. In this type of container, when the lids are closed one by one, the upper fitting portion and the lower fitting portion of both lids cannot be engaged with each other and do not close. In the present invention, in the both-lid supporting step before the both-lid closing step of closing the lid, the lower surface of the upper mating portion of one lid is supported by one lid supporting member, and the other lid is adjusted by the other lid supporting member. Support the lower surface of the part. Then, in the following both lid closing step, one lid is closed by one lid support member, and the other lid is closed by the other lid support member, so that both lids are closed at the same time. The mating portion and the lower mating portion can be engaged with each other to be reliably closed.

[0010] For a container in which one lid is closed in advance and the other lid is open, one lid support member is inserted into the lower surface of the upper mating portion of the tip of one lid so that the one lid is half closed. While being in the closed state, the other lid is rotated from the open state to the closed side to support the lower surface of the upper fitting portion of the tip of the other lid on the other lid supporting member. Thereby, the supporting state of the both lids by the lid supporting member in the both lid supporting step can be formed.

For a container with both lids open, the lids are rotated from the open state to the closed side to support the lower surface of the upper mating portion of one lid on one lid support member and the other. The lower surface of the upper fitting portion of the tip of the other lid is supported on the lid supporting member. Thereby, the supporting state of the both lids by the lid supporting member in the both lid supporting step can be formed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram showing a container turning process in a container folding method, FIG. 2 is a schematic diagram showing an end plate folding process and a first side plate folding process in a container folding method,
FIG. 3 is a schematic diagram showing a completed state of the first side plate folding in the container folding method, FIG. 4 is a schematic diagram showing a second side plate folding process in the container folding method, and FIG. 5 is a container flipping process in the container folding method. FIG. 6 is a schematic view showing a state where the lid supporting member is set in the both lid supporting step of the lid closing method. FIG. 7 is a schematic view showing a cross state of the lid supporting member in the both lid supporting step of the lid closing method. FIG. 9 is a schematic view showing a lid supporting state in a both lid supporting step of the lid closing method, FIG. 9 is a schematic view showing a both lids matching state in the both lid closing step of the lid closing method, and FIG. 10 is a diagram showing a both lid closing step of the lid closing method. FIG. 11 is a schematic view showing a state where both lids are closed, FIG. 11 is a schematic view showing a state where a lid support member is set in a both lid support step of the lid closing method, and FIG.
FIG. 13 is a schematic view showing a cross state of the lid supporting member in the both lid supporting step of the lid closing method, FIG. 13 is a schematic view showing a lid supporting state in the both lid supporting step of the lid closing method, and FIG. 14 is a both lid closing of the lid closing method. FIG. 15 is a schematic diagram showing a state where both lids are fitted in a process, FIG. 15 is a schematic diagram showing a state where both lids are closed in a both lid closing step of the lid closing method, FIG. 16 is a front view showing a lid closing device, and FIG.
7 is a side view showing a lid closing device, FIG. 18 is a schematic diagram showing a folding container, FIG. 19 is a schematic diagram showing a state where both lids of the folding container are fitted, and FIG. 20 is a schematic diagram showing a cleaning procedure of the folding container.

(Folding Container 1) (FIGS. 18 to 20) As shown in FIG. 18, the folding container 1 has a rectangular upper frame 2.
And left and right side plates 3, front and rear end plates 4, and a bottom plate 5. The side plates 3 are pivotally connected to left and right opposing sides of the upper frame 2 and the bottom plate 5 at pivot connection portions 3A and 3B, respectively, and connect the upper frame 2 and the bottom plate 5 together with the upper frames. It is bendable at a folding joint 3C intermediate the pivotal connection portions 3A and 3B between the base plate 5 and the bottom plate 5. The end plate 4 is pivotally connected to each of the front and rear opposing sides of the upper frame 2 by a pivot connection portion 4A.

Here, the side plate 3 is a pivotally connected portion 3A with the upper frame 2 and cannot be rotated outward (in the J direction in FIG. 18B) with respect to the inside of the upper frame 2. Further, the side plate 3 is a pivotally connected portion 3B with the bottom plate 5 and cannot rotate outward (in the direction K in FIG. 18B) with respect to the inside of the bottom plate 5.

In the folding container 1, a pair of lids 6A and 6B are pivotally connected via hinges 101 to both sides of an opening 1A formed by the upper frame 2. lid
6A and 6B are provided with an upper fitting portion 7 and a lower fitting portion 8 arranged in the width direction of their tip portions. Then, the container 1 is adapted to engage the lower mating portion 8 of the distal end portion of one of the other lid 6B below the upper mating portion 7 of the front end portion of the lid 6A (FIG. 19 (B)), the other of the lid 6B One lid under the top mating part 7
Engage the lower matching portion 8 of the tip of 6A (FIG. 19C).
Thereby, both lids 6A and 6B are engaged with each other and closed.

The folding container 1 is processed, for example, in a container washing line as follows (FIG. 20). (1) The folded containers 1 used in the physical distribution stage are stacked on a pallet in a folded state and carried in.

(2) The container 1 of (1) is supplied to the washing machine with the lids 6A and 6B opened.

(3) The container 1 is washed by a washing machine. At this time, the opening 1A of the container 1 is directed upward.

(4) The container 1 has the opening 1A facing downward,
Is folded.

(5) The folded container 1 faces the opening 1A and closes the lids 6A and 6B .

(6) The containers 1 of the above (5) are stacked and transferred to a pallet. Therefore, the operation of folding the container 1 in the above (4) and the operation of closing the lid 6 in the above (5) are performed as follows.

(Method and apparatus for folding folding container 1)
(FIGS. 1 to 5) As shown in FIGS. 1 to 5, the folding device of the folding container 1 is as follows.
It has a conveyor 11, a container turning device 12, an end plate pushing device 13, a first side plate turning device 14, a second side plate turning device 15, and a container turning device 16.

The conveyor 11 conveys the folding container 1.
As shown in FIG.
The folding container 1 having the opening 1A facing upward is turned upside down and the opening 1A is facing downward (the upper frame 2 is down and the bottom plate 5 is up). Is transported to the conveyor 11. Specifically, the container turning device 12 includes a motor 12A, a pair of turning arms 12B arranged on both sides of the conveyor 11 and rotated 180 degrees by the motor 12A, a cylinder 12C attached to the turning arm 12B, and a cylinder 12C. Go back and forth container 1
It has a holding plate 12D for holding the upper frame 2 from both sides.

As shown in FIG. 2, the end plate pushing device 13 is disposed at an end plate pushing operation position in the container conveying path by the conveyor 11, and pushes the end plate 4 of the container 1 down into the container. Specifically, the end plate pushing device 13 includes a pair of cylinders 13 </ b> A arranged on both sides of the conveyor 11,
It has a pushing plate 13B which advances and retreats by the cylinder 13A and pushes the end plates 4, 4 of the container 1 into the container.

As shown in FIG. 2, the first side plate lowering device 14 is disposed at the first side plate lowering operation position on the exit side of the end plate pushing operation position in the container conveying path by the conveyor 11, and the bottom plate 5 and the side plate 3 are disposed. Is pushed in one direction (rearward in the transport direction of the container 1), and a part of the side plate 3 is tilted. Specifically, the first side plate falling device 14 is configured by a stopper 14A that abuts on the upper front surface of the container 1 in the transport direction and applies a downward force to the bottom plate 5 and the side plate 3 in one direction. . At this time, the side plate 3 of the container 1 is pivotally connected to the upper frame 2 as described above.
A, the outer side with respect to the inside of the upper frame 2 (J in FIG. 18B).
Direction), and at the pivotal connection 3B with the bottom plate 5,
Outer side of bottom plate 5 with respect to the inside of the plate (K direction in FIG. 18B)
Can not rotate. For this reason, when the bottom plate 5 and the side plate 3 are provided with a force to lay down in one direction by the stopper 14A, the half plate connected to the upper frame 2 side has the half portion connected to the upper frame 2 side. The half of the side plate 3 connected to the bottom plate 5 side of the side plate 3 behind the container 1 in the transport direction of the container 2 falls into the frame of the bottom plate 5.

As shown in FIG. 4, the second side plate lowering device 15 is disposed at the second side plate lowering operation position on the output side of the first side plate lowering operation position in the container transport path by the conveyor 11, and the bottom plate 5 and The side plate 3 is pushed in the other direction (forward in the transport direction of the container 1), the rest of the side plate 3 is tilted, and the entire container 1 is folded. The second side plate falling device 15 is, specifically, a rotary brush 15 that contacts the upper portion (in this case, the bottom plate 5) of the container 1 and applies a falling force to the bottom plate 5 and the side plate 3 in the other direction.
A. At this time, of the side plates 3 that are forward in the transport direction of the container 1, the undeployed half that is connected to the bottom plate 5 side falls down into the bottom plate 5, and the side plate 3 that is rearward in the transport direction of the container 1. The unbroken half connected to the upper frame 2 falls into the upper frame 2.

As shown in FIG. 5, the container reversing device 16
Similarly to the container turning device 12, the motor 16A, the pair of turning arms 16B, the cylinder 16C, and the cylinder 1
6C, the container 1 disposed on the exit side of the second side plate lowering operation position and having the opening 1A facing downward is turned upside down, and the opening 1A is turned upward (upper frame). 2 up, bottom plate 5 down). In addition, the container reversing device 1
6 is the container 1 folded by the second side plate folding device 15
The stopper arm 16B is provided with a stopper 16E for stopping the container 1 when it has entered the reversing arm 16B of the container reversing device 16.

Accordingly, the folding container 1 is folded as follows. (1) The folded container 1 in the assembled state is turned upside down by the container turning device 12 and carried into the conveyor 11 (FIG. 1). At this time, both the lids 6A and 6B are in a double-open state where the lids 6A and 6B open outward from the opening 1A.

(2) With the upper front surface of the container 1 in the conveying direction stopped against the stopper 14A as the first side plate lowering device 14, the pressing plate 13B of the pair of cylinders 13A of the end plate pressing device 13 is stopped. As a result, when the end plates 4 and 4 of the container 1 are pushed down into the container and fall down, the above-mentioned part of the side plates 3 and 3 of the container 1 fall down so as to collapse backward in the transport direction (FIG. 2). The container 1 in which a part of the side plates 3, 3 has fallen,
The height is reduced, the abutment with the stopper 14A is released, and the lower part of the stopper 14A is transported forward (FIG. 3).

(3) When the rotating brush 15A of the second side plate lowering device 15 abuts against the bottom plate 5 of the container 1, the bottom plate 5 is flipped forward in the transport direction, and the above-mentioned remaining portions of the side plates 3, 3 of the container 1 Falls forward in the transport direction (FIG. 4), and the entire container 1 is folded.

(4) The folded container 1 is turned upside down by the container 1
Turn over by 6 and carry out to the next process. In this inverted state, one lid 6A is closed inside the opening 1A, and the other lid 6B is in a single-open state in which it is opened outside the opening 1A.

Therefore, according to the present embodiment, the following operations are provided. In a state where the folding container 1 is turned upside down (the upper frame 2 is turned down and the bottom plate 5 is turned up), the end plate 4 is thrusted by the end plate pushing device 13 and pushed down into the container to be pivotally attached to the upper frame 2. The end plate 4 is rotated around its pivotal connection 4A and falls into the upper frame 2. At the same time, the side plate, to which the end plate 4 was adjacent, is bent so as to buckle at the intermediate folding joint 3C as a result of the weight of the bottom plate 5 being added due to the fall of the end plate 4 so that the end plate in the upper frame 2 is bent. 4, and the entire folding container 1 is folded. Thereby, the folding container 1 can be folded at high speed with simple equipment.

When the end plate 4 is stuck as described above, the first side plate lowering device 14 pushes the side plate in one bending direction to reliably lower the side plate to one side, and then the second side plate lowering device 1
5, the side plate is pushed in the other bending direction and the side plate is tilted in the opposite direction. Thereby, the upper frame 2 and the bottom plate 5
Even when the pivotal connecting portions 3A and 3B and the folding joint 3C are rigid, the side plate can be reliably bent as described above, and the folding container 1 can be reliably folded.

By using the stopper 14A as the first side plate lowering device 14, the folding container 1 being conveyed by the conveyor 11 has its upper front surface pressed down by the stopper 14A to apply a downward force to the side plate in one direction. Thus, the side plate can be easily and reliably tilted to one side.

By using the rotary brush 15A as the second side plate lowering device 15, the folding container 1 is provided with the side plate with a lowering force in the other direction, and the side plate can be easily and reliably lowered to the other side.

(Method and Apparatus for Closing Lid of Folding Container 1)
(FIGS. 6 to 17) As shown in FIGS. 16 and 17, the lid closing device 20 includes a frame 21 provided so as to straddle the conveyor 11, a pair of slide frames 22, 22, and a lid supporting member elevating device 23.
And a lid supporting member moving device 24 and a lid rotating device 25.

The conveyor 11 is provided continuously from the above-mentioned container folding device and conveys the folded container 1, and is provided with a stopper 26 at the front end of the lid closing operation position in the container conveying path. The stopper 26 can move up and down from below the conveyor 11 to stop the folded container 1 in the open lid state, and then allow the container 1 with the lid closed to be carried out to a lower process.

The gantry 21 is provided with guide rails 21A at the upper portions on both sides along the conveying direction of the conveyor 11, and a pair of left and right slide frames 2 is provided on the guide rails 21A.
2, 22 are slidably supported. One slide supporting member 27A is supported on one slide frame 22, and the other cover supporting member 27B is supported on the other slide frame 22 via a swing lever 28, respectively. The both lid support members 27A and 27B have a thin plate tongue shape made of a spring steel plate or the like, and are arranged on the inside and the other side in the width direction of the container 1 stopped at the lid closing operation position. As will be described later, one lid support member 27A supports the lower surface of the upper joining portion 7 of the distal end of one lid 6A in the semi-closed state of the container 1, and the other lid support member 2 in the semi-closed state.
7B supports the lower surface of the upper mating portion 7 on the distal end side of the other lid 6B .

The lid supporting member elevating device 23 includes an elevating cylinder 29 which is trunnion-supported by each slide frame 22.
Is connected to the swing lever 28 of the lid supporting members 27A and 27B . The lift cylinder 29 sets the lid support members 27A and 27B to the standby position in the contracted state, swings the lid support members 27A and 27B downward from the standby position in the extended state, and stops the lid support member 27 in the lid closing work position. Is located at the opening 1 </ b> A of the container 1.

The lid support member moving device 24 connects the piston rod 31A of the slide cylinder 31 fixed to the gantry 21 to one slide frame 22, connects one end of a chain 32 to the slide frame 22,
Is wound around a pulley 33 provided on the gantry 21, and the other end of the chain 32 is connected to another slide frame 22. As a result, the left and right slide frames 22, 22 move synchronously and face each other. That is, when one slide frame 22 is moved by the slide cylinder 31, the other slide frame 22 is also moved synchronously by the chain 32 connected from this slide frame 22 to another slide frame 22 via the pulley 33.
Therefore, the lid supporting member moving device 24 simultaneously operates the lid supporting members 27A and 27B provided on the left and right slide frames 22 at the same time as the respective semi-closed lids 6A and 6
B is moved between a lid supporting position that supports B and a lid detaching position that is detached from each of the lids 6A and 6B in the closed state.

The lid rotating device 25 is used to open the lid 6 of the folding container 1 which has been stopped at the lid closing operation position.
A, consists of a compressed air nozzle 34 disposed below 6B . The lid rotating device 25 is provided with the conveyor 11 on the open lid 6.
Compressed air is blown from below, and the lids 6A and 6B are blown up and rotated to the closing side, and the lids 6A and 6B are placed on the lid supporting members 27A and 27B set at the above-described lid supporting positions. Instead of compressed air, the lid rotating device 25
You may comprise with a pusher.

Accordingly, the lid closing device 20 closes the folding container 1 as follows. Here, the container is folded by the above-described container folding device, and one lid 6A is opened.
A case in which the folding container 1 is closed inward and the one-sided opened container 1B in which the other lid 6B is opened to the outside of the opening 1A is closed (FIGS. 6 to 10).

(1) The lid supporting members 27A and 27B are set to the standby position by the lifting cylinder 29 of the lid supporting member lifting / lowering device 23, the folding container 1 is introduced, and the container 1 is closed by the stopper 26 to the lid closing work position. Let me pause.

(Both Lid Supporting Step) (2) The two lid supporting members 27A and 27B are positioned at the opening 1A of the folding container 1 of (1) above by the lifting cylinder 29 of the lid supporting member lifting / lowering device 23 (FIG. 6).

(3) The two lid support members 27A and 27B are advanced by the slide cylinder 31 of the lid support member moving device 24 (the two lid support members 27A and 27B move closer to each other).
Go to the lid support position by causes sink into the lower surface of the mating portion 7 on the distal end portion of one of the lid 6A one lid supporting member 27A, half to support one of the lid 6A said by one of the cover support member 27A the A closed state (also a half-open state) is set (FIG. 7).

(4) Compressed air nozzle 3 of lid rotating device 25
4, the other lid 6B in the one-sided open state is blown up from the open state to the closed side to be rotated, and the upper end portion of the other lid 6B is placed on the other lid support member 27B at the lid support position. 7 is brought into a semi-closed state supporting the lower surface (FIG. 8).

(Double lid closing step) (5) Slide cylinder 31 of lid support member moving device 24
The two lid support members 27A and 27B are retracted (the two lid support members 27A and 27B are moved away from each other) and moved toward the lid detached position, and the one lid 6A is gradually closed by the one lid support member 27A. At the same time, the one lid support member 27A is detached from the lower surface of the upper mating portion 7 at the distal end portion of the one lid 6A , and at the same time, the other lid 6B is gradually closed by the other lid support member 27B so that the other lid support member 27B is closed. 27B is removed from the lower surface of the upper mating portion 7 of the tip of the other lid 6B , and the lids 6A and 6B are engaged with each other and closed (FIG. 9). Thereby, both lids 6
A and 6B are provided below the upper mating part 7 of one lid 6A.
The lower mating portion 8 of 6A is engaged, and the lower mating portion 8 of one lid 6A is engaged below the upper mating portion 7 of the other lid 6B to close each other (FIGS. 18 and 19).

(6) The lid supporting members 27A and 27B are returned to the standby position by the lifting / lowering cylinder 29 of the lid supporting member lifting / lowering device 23, the stopper 26 is removed from the folding container 1, and the folding container 1 with the lid closed is moved to the conveyor 11. (FIG. 10).

When the lids 6A and 6B of the folding container 1 carried into the lid closing device 20 are both open, the lids are closed as follows (FIGS. 11 to 15). (1)
The lid supporting members 27A and 27B are set at the standby position by the lifting cylinder 29 of the lid supporting member lifting / lowering device 23, the folding container 1 is introduced, and the container 1 is closed by the stopper 26 and temporarily stopped at the working position.

(Two Lids Supporting Step) (2) The two lids supporting members 27A and 27B are positioned at the opening 1A of the folding container 1 of the above (1) by the lifting cylinder 29 of the lid supporting member lifting device 23 (FIG. 11).

(3) The two lid support members 27A and 27B are advanced by the slide cylinder 31 of the lid support member moving device 24 (the two lid support members 27A and 27B move closer to each other).
Then, it is moved to the lid support position, and both lid support members 27A, 27
B cross each other (FIG. 12).

(4) Compressed air nozzle 3 of lid rotating device 25
4, the two lids 6A and 6B in the double-opened state are blown up from the open state to the closed side and rotated, and one lid support member is rotated.
The semi-closed state in which the lower surface of the upper fitting portion 7 of the distal end of one lid 6A is supported on 27A , and the lower surface of the upper fitting portion 7 of the distal end of the other lid 6B is supported on the other lid supporting member 27B. It is in a semi-closed state (FIG. 13).

(Both lid closing step) (5) Slide cylinder 31 of lid supporting member moving device 24
The two lid support members 27A and 27B are retracted (the two lid support members 27A and 27B are moved away from each other) and moved toward the lid detached position, and the one lid 6A is gradually closed by the one lid support member 27A. At the same time, the one lid support member 27A is detached from the lower surface of the upper mating portion 7 at the distal end portion of the one lid 6A , and at the same time, the other lid 6B is gradually closed by the other lid support member 27B so that the other lid support member 27B is closed. 27B is removed from the lower surface of the upper mating portion 7 of the distal end of the other lid 6B , and the lids 6A and 6B are engaged with each other and closed (FIG. 14). This allows both lids
6A, 6B, under combined of one below the upper mating portion 7 of the lid 6A is engaged with the lower mating portion 8 of the other lid 6B, one of the lid 6A under the upper mating portion 7 of the other lid 6B The parts 8 are engaged to close each other (FIGS. 18 and 19).

(6) The lid supporting members 27A and 27B are returned to the standby position by the lifting / lowering cylinder 29 of the lid supporting member lifting / lowering device 23, the stopper 26 is removed from the folding container 1, and the folding container 1 with the lid closed is moved to the conveyor 11. (See FIG. 15).

Therefore, according to the present embodiment, the following operations are provided. In the folding container 1, the lids 6A, 6B
In the two-lid supporting step before the two-lid closing step, the lower surface of the upper mating portion 7 of one lid 6A is supported by one lid supporting member 27A , and the other lid 6B is aligned by the other lid supporting member 27B. The lower surface of the part 7 is supported. Then followed by hunting case closing step, gradually close the one of the lid 6A by one of the cover support members 27A, at progressively closing the other of the lid 6B by the other of the lid support member 27B, both the lid 6A, 6B Are closed at the same time, and as a result, the upper fitting part 7 and the lower fitting part 8 of both lids 6A and 6B can be engaged with each other and closed securely.

One lid 6A is closed in advance, and the other lid 6B
Is open, the one lid support member 27
By submerge the lower surface of the upper mating portion 7 of the front end portion of one of the cover 6A to A as well as the one of the lid 6A the semi closed state, the other of the lid by rotating the closing side from a state to open the other of the lid 6B The upper fitting portion 7 of the tip of the other lid 6B is placed on the supporting member 27B.
Support the lower surface of the. Thereby, the supporting state by the lid supporting members 27A and 27B of the both lids 6A and 6B in the both lid supporting step can be formed.

[0057] hunting case 6A, for the container 1 6B is open, hunting case 6A, rotates in the closing side from a state to open the 6B over one lid supporting member 27A on the distal end portion of one of the lid 6A In addition to supporting the lower surface of the fitting portion 7, the lower surface of the upper fitting portion 7 of the tip of the other lid 6B is supported on the other lid support member 27B . Thereby, the both lids 6 in the both lid supporting process are provided.
A and 6B can be supported by the lid supporting members 27A and 27B .

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design can be changed without departing from the scope of the present invention. The present invention is also included in the present invention. For example, the practice of the present invention does not require that the container be a folding container.

[0059]

As described above, according to the present invention, a pair of lids on both sides can be engaged with each other and closed with a simple facility.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a container turning process in a container folding method.

FIG. 2 is a schematic view showing an end plate folding step and a first side plate folding step in the container folding method.

FIG. 3 is a schematic diagram showing a state in which the first side plate is completely folded in the container folding method.

FIG. 4 is a schematic view showing a second side plate folding step in the container folding method.

FIG. 5 is a schematic view showing a container turning process in the container folding method.

FIG. 6 is a schematic view showing a state where a lid supporting member is set in a both lid supporting step of the lid closing method.

FIG. 7 is a schematic view showing a cross state of a lid supporting member in a both lid supporting step of the lid closing method.

FIG. 8 is a schematic diagram showing a state in which the lid is supported in a step of supporting both lids in the lid closing method.

FIG. 9 is a schematic diagram showing a state in which both lids are aligned in a both lid closing step of the lid closing method.

FIG. 10 is a schematic view showing a state in which both lids are closed in a both lid closing step of the lid closing method.

FIG. 11 is a schematic view showing a state where a lid supporting member is set in a both lid supporting step of the lid closing method.

FIG. 12 is a schematic view showing a cross state of a lid supporting member in a both lid supporting step of the lid closing method.

FIG. 13 is a schematic view showing a state where the lid is supported in a step of supporting both lids in the lid closing method.

FIG. 14 is a schematic diagram showing a state in which both lids are joined in a both lid closing step of the lid closing method.

FIG. 15 is a schematic diagram showing a state in which both lids are closed in a both lid closing step of the lid closing method.

FIG. 16 is a front view showing the lid closing device.

FIG. 17 is a side view showing the lid closing device.

FIG. 18 is a schematic view showing a folding container.

FIG. 19 is a schematic diagram showing a state in which both lids of a folding container are aligned.

FIG. 20 is a schematic view showing a procedure for cleaning the folding container.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 container 1A lid 6A, 6B lid 7 upper fitting part 8 lower fitting part 20 lid closing device 23 lid supporting member elevating device 24 lid supporting member moving device 25 lid rotating device 27A, 27B lid supporting member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-51-131790 (JP, A) Full-scale open 55-86701 (JP, U) Real-time open 49-95061 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) B65B 7/26

Claims (4)

(57) [Claims] 1. A pair of lids are pivotally attached to both sides of an opening of a container body, and the width of the tip of one lid is
Comprising alignment upper mating portion and a lower mating portion countercurrent, it includes sequence on mating portion and a lower mating portion in the width direction of the distal end portion of the other of the lid and the other below the upper mating portion of the distal end portion of one of the lid The two lids are engaged with each other by engaging the lower alignment of the tip of one lid with the lower alignment of the tip of one lid under the upper alignment of the tip of the other lid. In a method of closing a lid of a container, the lids are joined together and closed, and both lids are not engaged with each other in a semi-closed state, and the lower surface of an upper mating portion of one lid is supported by one lid support member, A double lid supporting step of supporting the lower surface of the upper mating portion of the distal end of the other lid with the other lid supporting member, and the lower surface of the upper mating portion of the tip of the one lid supporting one lid supporting member
Remove the same time, and characterized by having a disconnect from the lower surface of the upper mating portion of the front end portion of the other side of the lid support member and the other of the lid, closing hunting case closed by engaging each other hunting case step from To close the container lid. 2. A method for closing a container in which one lid is closed in advance and the other lid is open, wherein in the both lid supporting step, both lid supporting members are arranged in an opening of the container body, and one lid is provided. The support member is inserted into the lower surface of the upper mating portion of the tip portion of one of the lids so that the one lid is in a semi-closed state, and the other lid is rotated from the open state to the closed side, and the other lid support member is rotated. 2. The method according to claim 1, wherein the lower surface of the upper mating portion of the other lid is supported on the upper surface. 3. A method for closing a container having both lids open, wherein in the both lid supporting step, the both lid supporting members are arranged in the opening of the container body, and both lids are rotated from the open state to the closing side. 2. The lower surface of an upper mating portion of the tip of one lid is supported on one lid supporting member, and the lower surface of an upper mating portion of the other lid is supported on the other lid supporting member. A method for closing a lid of a container according to the above. 4. A container lid closing device used for carrying out the container lid closing method according to any one of claims 1 to 3, wherein each of the two lid support members is moved from a standby position to an opening of the container main body. A lid support member moving device that moves each of the two lid support members between a lid support position that supports the semi-closed lid and a lid detached position that comes off the closed lid, A lid rotating device for rotating the open lid to the closing side and placing the lid on the lid support member.