JP2012240714A - Sheet pallet folding device for film packaging machine, and film packaging machine having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively fold a sheet pallet by reducing running costs and initial costs and fold a thick sheet pallet which has been difficult manually.SOLUTION: A folding member is provided on a supporting base 13 fixed to a rotary base. The folding member includes a horizontal portion 14a for receiving a flat pallet 18 supporting a sheet pallet 17 having a packaged object H loaded thereon, and a vertical portion 14b for folding an outer peripheral edge of the sheet pallet 17 to the upper side. The folding member is provided oscillatably to the supporting base 13, and a balance weight 21 is mounted on a back face side of the vertical portion 14b. A biasing mechanism is structured to maintain an inclined attitude in which an upper end side is positioned further on the horizontally outer side by the weight balance in an non-acting state not acting on the sheet pallet 17, and in an acting state, the vertical portion 14b is displaced to a vertical attitude by weight of the packaged object H, and the sheet pallet 17 is folded upward.

Description

  The present invention relates to a sheet pallet folding device for a film packaging machine that places an article to be packaged on a sheet pallet and folds the outer periphery of the sheet pallet upward in order to wrap the sheet pallet with a film integrally with the article to be packaged. And a film packaging machine including the same.

When a large number of packages such as cardboard boxes containing items are stacked and stored in a warehouse or transported, the package as a packaged item is placed on the sheet pallet to prevent the package from collapsing or fouling. In addition, a belt-like packaging film is integrally wound around the sheet pallet and the article to be packaged for packaging.
At that time, the outer peripheral edge of the sheet pallet must be folded up and brought into close contact with the lower side of the article to be packaged.
Further, in the case of a thick sheet pallet, it has been difficult to fold the outer periphery itself by hand.

Therefore, conventionally, the following has been proposed so that the folding operation of the outer peripheral edge of the sheet pallet can be easily performed.
That is, the tab push-up bar mechanism is attached to a position along one side edge of the pallet placed on the rectangular rotary table. This tab push-up bar mechanism is connected to both ends of a mounting plate fixed to the side surface of the turntable so that one end of the two levers is pivotally connected, and the other end of each of the two levers is Each end of the push-up bar is rotatably connected to each other, and the tip of the air cylinder is rotatably attached to the center of one of the two levers.
With the above configuration, after the article to be packaged placed via the sheet pallet is placed on the rotary table, the push-up bar is pushed upward by the air cylinder, and the tab is bent (folded) at a right angle upward. A film is wound from above the tab, and after winding, the push-up bar is lowered by an air cylinder so that the film can be pulled out from between the film and the tab (see Patent Document 1).

Noto 2568972

However, in the conventional example, an air cylinder is used, and a compressor and power for driving the compressor are required for its operation, and a drive device and power such as an air cylinder and a compressor must be provided. In other words, the running cost and the initial cost increase.
Further, in this conventional example, it is not disclosed where the compressor is provided, but it is necessary to provide the compressor integrally with the rotary table or on the base frame provided with the rotary table rotatably. When it is provided on the rotary table side, in order to supply power to the compressor, a power supply cable from the power source must be connected to the compressor via a rotary joint. On the other hand, when it is provided on the base frame side, the air piping connected to the compressor must be connected to the air cylinder via the rotary joint, and in any case, the initial cost increases due to the rotary joint or the like. There was an inconvenience.
In addition, when the rotary joint connection configuration is not adopted, the compressor and the power supply cable (or air cylinder and air pipe) are connected so as to be separable, and when the seat pallet is folded, the compressor and power supply cable (or air cylinder and On the other hand, when rotating a table with a tab push-up bar mechanism for wrapping with film, disconnect the connection between the compressor and the power supply cable (or air cylinder and air piping). Although it is conceivable, there is an inconvenience that the packaging work requires a lot of labor for the connection and separation work.

The present invention has been made in view of the above points, and the invention according to claim 1 is capable of reducing the running cost and the initial cost and enabling the sheet pallet to be folded at a low cost. The purpose of the invention according to claim 2 is to enable easy folding of the corner portion of the sheet pallet, and the invention according to claim 3 aims to further reduce the initial cost. And
The invention according to claim 4 aims to provide a film wrapping machine capable of reducing the running cost and the initial cost, folding the sheet pallet and wrapping the article to be packaged with the film, and according to claim 5. It is an object of the present invention to facilitate film packaging by folding a sheet pallet with space advantage.

In order to achieve the above-described object, the invention according to claim 1
A sheet pallet folding device for a film wrapping machine for placing an article to be packaged on a sheet pallet and folding the outer periphery of the sheet pallet upward in order to wrap the sheet pallet with a film integrally with the article to be packaged. ,
A support base for placing and supporting a flat pallet on which an article to be packaged is placed via a sheet pallet;
A folding member provided at a predetermined location on the outer peripheral edge of the sheet pallet on the support, and folding the outer peripheral edge of the sheet pallet upward;
It is provided in the folding member, and in a working state acting on the sheet pallet, the sheet pallet is allowed to move to a vertical posture folded so as to stand up the outer peripheral edge of the sheet pallet due to the weight of an object to be packaged. An urging mechanism that maintains an inclined posture located laterally outward toward the upper end side in a non-acting state that does not act;
It is characterized by having.

(Action / Effect)
According to the configuration of the sheet pallet folding apparatus for a film packaging machine of the invention according to claim 1, in the non-operating state where the flat pallet is not placed on the support base, the support base is maintained while the folding member is maintained in the inclined posture by the biasing mechanism. As the flat pallet is placed and supported, the folding member can be displaced to a vertical posture by the weight of the article to be packaged, and can be folded so as to act on the sheet pallet and raise its outer periphery.
This eliminates the need for conventional drive devices such as air cylinders and compressors and the power required to drive the seat pallet, and reduces running costs and initial costs even with thick sheet pallets. Thus, the sheet pallet can be folded at a low cost.
In addition, since the folding member receives the flat pallet in an inclined posture, the frontage for placing the flat pallet on the support base with a forklift is widened, and it is easy to place the flat pallet on the support base due to the guide action due to the inclination. There are benefits.

In order to achieve the above-described object, the invention according to claim 2
In the sheet pallet folding apparatus for a film packaging machine according to claim 1,
The sheet pallet is rectangular in plan view;
A pair of folding members are provided on the support base so as to sandwich the corners of the sheet pallet placed on the support base,
And the corner | angular part folding member which folds the corner | angular part which protruded when folding the said sheet pallet with the said pair of folding member in the horizontal direction with the winding force of a film is provided and comprised.

(Action / Effect)
According to the configuration of the sheet pallet folding apparatus for a film packaging machine of the invention according to claim 2, the corner portion of the sheet pallet that protrudes outward when the square side portion is folded by the pair of folding members, The folding member can be folded in the horizontal direction by the film winding force.
Therefore, it is not necessary to manually fold the corner portion of the protruding sheet pallet, and the corner portion of the sheet pallet can be easily folded.

In order to achieve the above-described object, the invention according to claim 3
In the sheet pallet folding apparatus for a film packaging machine according to claim 1 or 2,
The folding member is composed of an angle member in which a horizontal portion that receives a flat pallet and a vertical portion that is folded by acting on the sheet pallet are integrated, and a location where the horizontal portion and the vertical portion cross or close to each other The position is provided on a support base so as to be swingable with a horizontal axis as the center, and the urging mechanism is configured so that the vertically oriented portion is inclined with a weight balance in a non-operating state.

(Action / Effect)
According to the configuration of the sheet pallet folding apparatus for a film packaging machine of the invention according to claim 3, by using the weight balance, the urging mechanism is configured so as to be inclined in the non-operating state. The configuration can be simplified and the initial cost can be further reduced as compared with the case where it is attached and urged so as to be inclined in a non-operating state.

In order to achieve the above-described object, the invention according to claim 4
A support roll of the sheet pallet folding apparatus for a film packaging machine according to any one of claims 1, 2, and 3 is provided on a main body, and a roll of a roll of a belt-like packaging film wound on the main body. A film supply mechanism comprising a roll holding member that is rotatably held and a guide mechanism that guides the film supplied from the original roll to the support base side, and the support base and the film supply mechanism are relatively rotatable. After the flat pallet is placed and supported on the support base, the film is wound around the sheet pallet and the packaged object from the outer surface of the folding member by fixing the tip of the film on the support base side, and the sheet The film is detached from the folding member by lifting the pallet and the package, and the sheet pallet and the package are integrally packaged with the film. It is characterized in that are configured to.

(Action / Effect)
According to the configuration of the film packaging machine of the invention according to claim 4, a film pallet folding apparatus for a film packaging machine capable of folding a sheet pallet at a low cost without requiring a driving device or power is provided in the body body, and the film supply The tip of the film supplied from the mechanism through the guide mechanism is fixed to the support base by sticking it to the package with tape or sandwiching it between the flat pallet and the sheet pallet, and the support base and the film supply mechanism The film is wound around the sheet pallet and the package from the outer surface of the folding member, and the film is detached from the folding member by lifting the sheet pallet and the package, and the sheet pallet and the package Can be integrally packaged with a film.
Therefore, as a whole, it is possible to provide a film packaging machine that can reduce the running cost and the initial cost, fold the sheet pallet, and wrap the article to be packaged with the film.

In order to achieve the above-described object, the invention according to claim 5
The film packaging machine according to claim 4,
A support base is provided on the machine body so that it can rotate freely.
A film is supplied by fixing the front end of the film to the support table side and rotating the support table, and the sheet pallet and the package are integrally packaged with the film.

(Action / Effect)
According to the configuration of the film packaging machine of the invention according to claim 5, by rotating the support base, the sheet pallet can be folded and the packaged object can be packaged integrally with the film, so that the film supply mechanism side is rotated. In this case, film wrapping by folding the sheet pallet can be easily performed with space advantage, compared to having to secure a wide space necessary for the rotation.

As is clear from the above description, according to the configuration of the sheet pallet folding apparatus for a film packaging machine of the invention according to claim 1, the folding member is moved by the biasing mechanism in the non-operating state where the flat pallet is not placed on the support base. As the flat pallet is placed and supported on the support stand while maintaining the tilted posture, the folding member is displaced to the vertical posture due to the weight of the article to be wrapped, and is folded so as to act on the sheet pallet and raise its outer periphery. be able to.
This eliminates the need for conventional drive devices such as air cylinders and compressors and the power required to drive the seat pallet, and reduces running costs and initial costs even with thick sheet pallets. Thus, the sheet pallet can be folded at a low cost.
In addition, since the folding member receives the flat pallet in an inclined posture, the frontage for placing the flat pallet on the support base with a forklift is widened, and it is easy to place the flat pallet on the support base due to the guide action due to the inclination. There are benefits.

It is a general view which shows the Example of the film packaging machine which concerns on this invention, (a) is a whole front view, (b) is a whole side view. 1 is an overall perspective view of a sheet pallet folding apparatus for a film packaging machine according to the present invention. It is a whole top view in the state where the article to be packaged was placed on the sheet pallet. It is a whole side view which shows the conveyance state by a forklift. It is an expansion perspective view of the principal part. It is a schematic side view with which operation | movement description is provided, (a) shows the inclination posture of a non-operation state, (b) shows the vertical posture of an operation state, respectively. It is a top view of the principal part with which operation | movement description is provided, (a) shows the state before winding a film, (b) shows the state which wound the film, respectively.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall view showing an embodiment of a film packaging machine according to the present invention, (a) is an overall front view, (b) is an overall side view, and a turntable 2 is rotatable on a machine body 1. The film supply mechanism 3 is provided on the opposite side of the turntable 2 and the film pallet folding device 4 for the film wrapping machine is attached to the turntable 2 so as to rotate integrally to constitute a film wrapping machine. ing.

The film supply mechanism 3 guides the roll holding member 6 that rotatably holds the roll 5 wound with the belt-like packaging film F in a roll shape and the film F supplied from the roll 5 to the turntable 2 side. And a guide mechanism 7 that performs the above operation.
Although the elevator guide 8 is erected on the machine body 1 and is not shown, sprockets are provided on the upper and lower portions of the elevator guide 8, and a chain is wound around the upper and lower sprockets, and an elevator platform 9 is connected to the chain. . Further, an elevating electric motor 10 provided at the upper end of the elevating guide 8 and an upper sprocket are interlocked and connected, and a roll holding member 6 and a guide mechanism 7 are provided on the elevating platform 9.

The guide mechanism 7 is configured to form a detour of the film F by a pair of small-diameter guides 11 and 11 and a single large-diameter guide 12, and the large-diameter guide 12 can adjust a braking force for its rotation. A tension brake to be applied is attached. Thereby, tension is applied to the film F, and the film F is stretched in the longitudinal direction.
In addition, the electric motor M provided on the machine body 1 and the turntable 2 are interlocked and connected via a chain (not shown).

  With the above configuration, as will be described later, the leading edge of the film F is fixed to the turntable 2 side, the turntable 2 is driven and rotated by the electric motor M, and the lift table 9 is driven up and down by the lift motor 10. The film F is wound around the package H while being stretched according to the height of the package H so that the package H can be packaged.

  As shown in the overall perspective view of the sheet pallet folding apparatus for film packaging machine in FIG. 2, the sheet pallet folding apparatus 4 for film packaging machine is attached to and detached from the turntable 2 with a flat head (not shown) or the like. The support base 13 is attached and fixed as possible, the folding members 14 are provided in pairs at predetermined four locations on the support base 13, and the urging mechanism 15 is provided on the folding member 14.

  As shown in an overall plan view of a state in which an object to be packaged is placed on the sheet pallet in FIG. 3 and an overall side view showing a state of conveyance by a forklift in FIG. The cardboard box 16 is placed on the flat pallet 18 via the sheet pallet 17, and the fork 20 of the forklift 19 is removably inserted into the flat pallet 18 so as to convey the article to be packaged H and the sheet pallet 17. ing.

As shown in the enlarged perspective view of the main part of FIG. 5, the folding member 14 acts on the lateral portion 14 a that receives the flat pallet 18 that supports the sheet pallet 17 on which the article H to be packaged is placed, and the sheet pallet 17. The sheet pallet 17 is composed of an angle member integrated with a vertically oriented portion 14b that folds the outer peripheral edge of the sheet pallet 17 upward.
A folding member 14 is provided on the support base 13 so as to be able to swing, with a place where the horizontally-oriented part 14a and the vertically-oriented part 14b intersect or a place close thereto as a horizontal axis P1.
Further, a balance weight 21 is attached to the back side of the vertically oriented portion 14b, and in a non-operating state where it does not act on the seat pallet 17, an urging mechanism is maintained so as to maintain an inclined posture positioned laterally outward toward the upper end side by weight balance. 15 is configured.

The pair of folding members 14, 14 are installed at locations sandwiching the corners of the sheet pallet 17 placed on the support base 13.
Of the folding members 14, 14, on the back surface of the folding member 14 located on the upper side in the rotational direction of the support base 13, it is rotatable around the vertical axis P <b> 2 in the operating state acting on the sheet pallet 17. A corner portion folding member 22 that folds the corner portion 17a protruding so as to protrude as the sheet pallet 17 is folded by the pair of folding members 14 and 14 is provided.
On the other hand, on the back surface of the folding member 14 positioned on the lower side in the rotational direction of the support base 13, a recess 23 for fitting the corner portion folding member 22 in a state where the corner portion 17 a is folded by acting on the corner portion 17 a of the sheet pallet 17. Is formed.
The corner portion folding member 22 is in a non-actuated state where it does not act on the sheet pallet 17 and is rotated outward as the vertically oriented portion 14b of the folding member 14 is inclined due to the weight balance of the biasing mechanism 15. Configured to maintain.

  In addition, a rod-shaped film guide 24 inclined toward the vertical portion 14b toward the upper end side is provided on the back surface of the folding member 14 positioned on the upper side in the rotational direction of the support base 13, and when the film F is wound, the film F Is configured so that the lower end edge thereof can be prevented from being caught by the balance weight 21 or a bolt to which the balance weight 21 is attached.

Next, the operation of packaging the article H to be packaged with the film F together with the sheet pallet 17 will be described with reference to the drawings.
The to-be-packaged object H placed on the flat pallet 18 via the sheet pallet 17 is conveyed onto the support base 13 by the forklift 19 and the fork 20 is lowered. Accordingly, the bottom side of the outer peripheral lower edge of the flat pallet 18 is placed on the lateral portion 14a of the folding member 14 in the inclined posture [(a) of FIG. 6].

As the descent continues, the vertical portion 14b is displaced to the vertical posture against the urging force due to the weight of the balance weight 21 due to the weight of the article to be packaged H.
Along with this displacement, it acts on the sheet pallet 17 and folds so that the outer peripheral edge of the sheet pallet 17 is raised [(b) of FIG. 6].

After the flat pallet 18 is placed and supported on the support base 13, the fork 20 is pulled out, and then the tip of the film F drawn through the guide mechanism 7 is attached to the packaged object H with tape, It fixes to the support stand 13 side by pinching between the pallet 18 and the sheet pallet 17 etc.
Thereafter, the support base 13 is rotated and the elevating base 9 is moved up and down, whereby the film F is supplied while being stretched and wound around the package H together with the sheet pallet 17.

  After the winding is completed, the film F is cut, the fork 20 is inserted into the flat pallet 18 to raise the sheet pallet 17 and the article to be packaged H, and the film F is pulled out from the folding member 14 and the corner partial folding member 22, and a series of packaging. Exit.

  In the above-described embodiment, the urging mechanism 15 is configured to maintain the folding member 14 (vertical portion 14b) in an inclined posture positioned laterally outward toward the upper end side in a non-acting state where it does not act on the sheet pallet 17. Although it can be configured simply and inexpensively, it may be configured using a winding spring or the like in order to maintain an inclined posture positioned laterally outward toward the upper end side in a non-actuated state.

  Moreover, in the said Example, although the folding member 14 is provided one by one in each of the four corners of the square-shaped sheet pallet 17 mounted on the support stand 13, it is further provided in the intermediate part of each side. May also be provided.

  Moreover, in the said Example, although the support stand 13 is attached to the turntable 2 so that attachment or detachment is possible, and the sheet pallet folding apparatus 4 for film packaging machines is comprised as an attachment, as a film packaging machine of this invention, a film packaging machine The sheet pallet folding device 4 may be attached to the main body 1 in a fixed state, and may be configured exclusively for folding.

  Moreover, in the said Example, in order to wind the film F around the sheet pallet 17 and the to-be-packaged object H, the support base 13 is rotated, that is, the sheet pallet 17 and the to-be-packaged object H are rotated. However, as the present invention, the elevator 13 may be rotated, that is, the film supply mechanism 3 side for supplying the film F.

  In the above-described embodiment, the support base 13 is provided with mounting portions for the folding members 14 at a plurality of locations at different distances from the center, and the folding members 14 can be replaced to accommodate the sheet pallets 17 having different sizes. You may do it.

DESCRIPTION OF SYMBOLS 1 ... Machine body 3 ... Film supply mechanism 4 ... Sheet pallet folding apparatus 5 for film packaging machines 5 ... Original fabric roll 6 ... Roll holding member 7 ... Guide mechanism 13 ... Supporting base 14 ... Folding member 14a ... Side part 14b of folding member 14 ... Vertical portion of folding member 15 ... Biasing mechanism 17 ... Sheet pallet 18 ... Flat pallet 22 ... Folding member for corner portion F ... Packing film H ... Package P1 ... Horizontal axis P2 ... Vertical axis

Claims (5)

A sheet pallet folding device for a film wrapping machine for placing an article to be packaged on a sheet pallet and folding the outer periphery of the sheet pallet upward in order to wrap the sheet pallet with a film integrally with the article to be packaged. ,
A support base for placing and supporting a flat pallet on which an article to be packaged is placed via a sheet pallet;
A folding member provided at a predetermined location on the outer peripheral edge of the sheet pallet on the support, and folding the outer peripheral edge of the sheet pallet upward;
It is provided in the folding member, and in a working state acting on the sheet pallet, the sheet pallet is allowed to move to a vertical posture folded so as to stand up the outer peripheral edge of the sheet pallet due to the weight of an object to be packaged. An urging mechanism that maintains an inclined posture located laterally outward toward the upper end side in a non-acting state that does not act;
A sheet pallet folding device for a film packaging machine. In the sheet pallet folding apparatus for a film packaging machine according to claim 1,
The sheet pallet is rectangular in plan view;
A pair of folding members are provided on the support base so as to sandwich the corners of the sheet pallet placed on the support base,
And the sheet pallet folding apparatus for film packaging machines provided with the corner | angular part folding member which folds the corner | angular part which protruded when the said sheet pallet was folded with a pair of said folding member in the horizontal direction by the winding force of a film. In the sheet pallet folding apparatus for a film packaging machine according to claim 1 or 2,
The folding member is composed of an angle member in which a horizontal portion that receives a flat pallet and a vertical portion that is folded by acting on the sheet pallet are integrated, and a location where the horizontal portion and the vertical portion cross or close to each other For a film wrapping machine in which a portion is provided on a support base so as to be swingable with a horizontal axis as a center, and the urging mechanism is configured so that the vertical portion is inclined with a weight balance in a non-operating state. Sheet pallet folding device.   A support roll of the sheet pallet folding apparatus for a film packaging machine according to any one of claims 1, 2, and 3 is provided on a main body, and a roll of a roll of a belt-like packaging film wound on the main body. A film supply mechanism comprising a roll holding member that is rotatably held and a guide mechanism that guides the film supplied from the original roll to the support base side, and the support base and the film supply mechanism are relatively rotatable. After the flat pallet is placed and supported on the support base, the film is wound around the sheet pallet and the packaged object from the outer surface of the folding member by fixing the tip of the film on the support base side, and the sheet The film is removed from the folding member by lifting the pallet and the packaged object, and the sheet pallet and the packaged object are packaged with the film. Film packaging machine, characterized in that you have. The film packaging machine according to claim 4,
A support base is provided on the machine body so that it can rotate freely.
A film packaging machine for supplying a film by fixing the leading end of a film on the side of the support base and rotating the support base to wrap a sheet pallet and an object to be packaged with the film.

Images