JPH03212310A - packaging equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a packaging device for wrapping an object to be packaged, typified by spherical vegetables such as lettuce, in a packaging sheet.

[Conventional technology]

A possible way to package this kind of spherical vegetables, etc. is to place the item to be packaged on a spread out packaging sheet, and then fold each one side edge of the packaging sheet over one side. There are some that are hermetically sealed by concentrating the edges in one place and heat welding them together.

[Problem to be solved by the invention]

If the packaging is simply sealed by heat welding, the finish of the heat welded parts cannot be described as aesthetically pleasing.In order to achieve aesthetically pleasing packaging, it is necessary to It is necessary to sequentially fold the package over the outer circumferential surface of the packaged object and fix each folded side end with an adhesive fixing means, and this process has been performed manually.

However, manual work has low work efficiency and is an obstacle to cost reduction, so there is still room for improvement.

It is an object of the present invention to provide a packaging product that provides a good packaging finish, improves work efficiency, and that can efficiently contact and secure each side edge of an object folded at one location to secure the packaging. It is in the point of providing.

[Means to solve the problem]

The characteristic structure according to the present invention is that each side edge of the peripheral edge of the packaging sheet on which the object to be packaged is placed is folded back and placed over the object to be packaged, and then folded over the other side edge of the peripheral edge that was previously folded and covered. A plurality of wrapping devices are provided corresponding to each one side end of the packaging sheet, and each of the packaging sheets is provided with a plurality of wrappers that can be switched between an active position in which the folded state is maintained and a non-active position in which the packaging sheet is retired to a standby position. Located at the top with folded edges,
The one side end to which the adhesive fixing means for fixing the folded state is applied is folded back and a wrapping operation is performed, and at the final stage of the wrapping operation, the adhesive fixing means is applied to bond the one side end. A wrapping device that operates to perform a fixing action is connected to a base end that operates to wrap and a distal end that is movable relative to the base end while being biased in the direction of pressing the packaged object. and a wrapping roller is provided at the distal end portion to press the one side end against the surface of the object to be packaged and move on the surface of the object to be packaged by the movement of the wrapping tool,
Its effects are as follows.

[For production]

A wrapper that is located at the top of each folded edge and performs a wrapping operation by folding back one edge of the edge to which adhesive means for fixing the folded edge is applied. This section describes the operation of other enclosing devices. That is, the wrapping tool folds back one corresponding end of the peripheral edge of the packaging sheet and covers the object to be packaged, and folds the other end of the peripheral edge that was previously folded and covered. Maintain overlapping state. This state is the working position of the enclosing tool. Then, the next enclosing tool maintains its working position until the other end is folded back and folded, and the enclosing tool in the working position retires to the standby position from when the folding state is completed or just before that. and switches to the non-working position.

Next, the one side end is folded back and a wrapping operation is performed on the one side edge that is located at the top in the folded state of each side edge and where the adhesive means for fixing the folded state is applied. Describe the operation of the wrapper. In other words, when the wrapping tool is moved with the wrapping roller acting on the one side end, the wrapping roller advances while turning the one side end and comes into contact with the object to be packaged. Due to the pressing force of the distal end against the proximal end, the packaging sheet advances to be covered with one side end in contact with the surface of the object to be packaged. In the final step, the adhesive means applied or applied to the one side edge is applied to bond the last folded one side edge and the preceding one side edge folded back just before. Then, at the folding position of the article to be packaged, the folded ends of each side are fixed to each other.

As described above, since the packaging form is adopted in which the packaging roller is pressed against the surface of the packaged item while the packaging sheet is placed over the packaged item, the packaged item can be covered with enhanced adhesion. .

Moreover, since it is swingable relative to the tip supporting the packaging roller and is biased in the direction of holding down the packaged object,
Even when objects to be packaged have different surface shapes and sizes, the followability of the packaging roller can be improved, and the degree of adhesion of the packaging sheet to the objects to be packaged can be improved.

In addition, since the wrapping roller of this wrapping device moves by contacting the surface of the packaged object to keep the folded ends fixed to each other, it is possible to keep the wrapping sheets fixed to each other. The process of inserting and bonding can be performed continuously, and there is no need to provide a dedicated device for bonding and fixing.

〔Effect of the invention〕

As a wrapper, the distal end can be pivoted relative to the proximal end, and is biased toward the object to be packaged in the pressing direction, and through rational modification, such as providing a wrapping roller at the distal end,
Even for items that vary in shape and size, packaging with a good finish can be done more efficiently than by hand, and it also has the advantage of being able to perform adhesive and fixing work within a series of work processes. We have now been able to provide a useful packaging device.

In addition, especially for a spherical or cylindrical object to be packaged, when the adhesive fixing position is on the outer circumferential surface of the object on the opposite side from the wrapping tool standby position, the distal end may be attached to the proximal end. The packaging roller can be prevented from going around to the outer circumferential surface position by the structure that urges the packaged object in the direction of pressing the packaged object in a swingable manner.
Adhesive fixing action can be performed efficiently.

〔Example〕

As shown in FIGS. 6 and 9, the packaging device (A) includes a packaging workbench (1) and a packaged object holding mechanism ( 2) Apply (6) to the wrapping device (B) consisting of a stopper stand (3), wrapping mechanism (4), etc., and the adhesive fixing means to the packaging sheet (5) placed at the wrapping work position. An adhesive fixing means supply device (7) and a packaging sheet (5) are placed at the packaging work position.
) Packaging sheet supply device (3
6). Here, the object to be packaged (C) is spherical vegetables such as lettuce, but it may be of other shapes. Further, although an adhesive tape is used as the adhesive fixing means, a simple adhesive may be used.

Next, the wrapping device (B), such as the packaged object holding mechanism (2), the catch and stopper stand (3), and the wrapping mechanism (4), will be explained. As shown in FIGS. 6 to 8, the holding mechanism (2) moves a first moving member (10) and a second moving member (11) up and down on a vertical sliding shaft (9) that also serves as a support. As well as being able to fit externally, both (10).

A compression spring (12) is interposed between (11) to maintain a constant distance. At the upper end of the sliding shaft (9) there is provided a holder (3) for receiving and receiving the packaged object (C), and this holder has arms protruding in all directions on the outer periphery of the disk. A section (3a) is provided. On the other hand, the first moving member (10
), the four arms (13) extend radially in a state below the arm part (3a), and the four arms (13) and the four arm parts (3a) are connected by four bending links (14). A holding arm (2A) is pivotally supported at the tip of the arm portion (3a) so as to be able to swing up and down, and each of the arms (
2A) are respectively connected to the bending links (14), and as the bending links (14) bend and swing, the supports move against the stoppers (
The article to be packaged (C) placed on the holding arm (2)
Hold at A). The holding member (2A) is attached to the arm portion (3
exhibiting an arc shape in side view along the outer circumferential surface of the packaged object (C) from the base end pivotally supported by a) to the distal end;
In a plan view, the width is wide at the intermediate portion between the base end and the distal end, and gradually narrows toward the base end and the distal end. Therefore, the packaged object (C)
Good fixation and retention. Moreover, the holding member (2
The tip of A) is curved outward, and is configured so as not to bite into the outer peripheral surface of the object to be packaged (C) and damage it when it comes into contact with the object to be packaged (C).

One end of a scale-type drive arm (15) that swings up and down is connected to the side surface of the second moving member (11), and the other end of the scale-type drive arm (15) is connected to the side surface of the second moving member (11).
5) is connected to a crank arm (16) that drives the vertical swing, and this crank arm (16) is connected to a drive motor (17).
It is attached to the output shaft and configured to move the second moving member (11) up and down. Therefore, the holding arm (2
When the second moving member (11) is moved upward from the open state of A), the first moving member (10) is first pushed up by the pressing force of the compression spring (12). Then, as the bending link (14) bends, the holding arm (13) rises and swings to hold the lower half of the packaged object (C).

Next, the wrapping mechanism (4) will be explained.

This wrapping mechanism (4) includes first to fourth wrapping tools (18), (19), (20), which are arranged radially.
(21). The first wrapping device (18) is first operated with the holding arm (2A) holding the object (C) to be packaged. This first wrapping tool (18) folds back one side edge (5a) of the peripheral edge of the packaging sheet (5) and then covers the packaged item (C). The first one is fixed at the top center position of object (C).
The wrapper plate (22) and the first wrapper plate (22) are pivotally supported at their tips so as to be relatively swingable, and a swing motor (
The swing drive arm (24) is fixed to the output shaft of the
). The first wrapping plate (22) is formed of an elastically deformable thin plate material, and the elastic deformation force allows the first wrapping plate (22) to easily conform to the circumferential surface of the packaged object (C).
The tip of the wrapping plate (22) that performs the pressing action is formed into a fork shape. A plate cam (25) is fixed to the rear end of the first wrapping plate (22), and the first wrapping plate (22) is fixed to the rear end of the first wrapping plate (22).
A roller type guide mechanism (26) is provided on the outside of the movement trajectory of 2), so that when the first wrapping plate (22) is actuated, the roller type guide mechanism (26) moves to the curved part of the first wrapping plate (22). It acts to forcibly direct the tip of the first wrapping plate (22) toward the object to be packaged (C). When the tip of the first wrapping plate (22) comes close to the object to be packaged (C), the plate cam (25) comes into contact with the roller type guide mechanism (26), and the tip of the first wrapping plate (22) approaches the object to be packaged (C). When the plate cam (25) is disengaged from the roller type guide mechanism (26) near the moving end, the first wrapping plate (22 ) moves along a trajectory that enters the inside of the packaged object (C) from the outer peripheral surface thereof. Therefore, the tip of the first wrapping plate (22) moves in sliding contact with the outer circumferential surface of the item to be packaged (C) due to its elastic force, and the one end of the wrapping sheet (5) (
5a) can be brought into close contact with the packaged object (C). The first packaging tool (18) is the packaging sheet ) (5
) is in a working position in which one side end (5a) of the packaged object (C) is pressed against the outer peripheral surface of the object (C).

The first wrapping tool (18) is attached to one side end (
5a), the second wrapper (19) located 180' diagonally begins to operate. Second wrapping tool (19
) has almost the same structure as the first wrapping device (18), the difference is that the tip of the second wrapping plate (27) is not formed into a fork shape, but is formed into a single strip-shaped plate. When one end (5b) of the sheet (5) is placed over the first wrapping tool (18), the tip thereof is inserted into the fork-shaped tip of the first wrapping tool (18). Then, the second wrapping tool (19) finishes stacking the next one side end (5b) on top of the one side end (5a) of the packaging sheet (5) that was first covered by the first wrapping tool (18). Then, the first wrapper (18) returns to its original standby position and assumes a non-operating position. In this case, since the tip of the second wrapping plate (27) of the second wrapping tool (18) has entered the split tip of the first wrapping plate (22) of the first wrapping odor (18), One corresponding end (5a).

(5b) is folded with sufficient weight allowance.

Next, as shown in FIG. 5, the third wrapper 2 (20) is activated. The third wrapper (20) has a swing drive arm (2) driven by a swing motor (23).
4), a roller support arm (34) pivotally supported at the tip of this swing drive arm (24) so as to be relatively swingable, and one side of the packaging sheet (5) at the tip of this roller support arm (34). It consists of a wrapping roller (28) which folds back the end (5c) and brings it into contact with the outer peripheral surface of the object to be packaged (C). The roller support arm (34) is driven by a biasing spring (29).
The structure is such that it biases the object to be packaged (C) in the direction of holding it down and can easily follow changes in the shape of the object to be packaged (C) by means of elastic deformation force. A fixed plate cam (30) is provided outside the movement trajectory of the roller support arm (34), and a guide roller (31) is attached to the rear end of the roller support arm (34), so that the guide roller (31) Fixed plate cam (3
By abutting against the cam surface (30a) of o), the wrapping roller (28) is prevented from entering beyond a certain level in the direction of the contact press against the packaged object (C). From the above, when the third wrapping tool (20) finishes overlapping the one side end (5c) at a predetermined position, the second wrapping tool (19) returns to the standby position, and then the fourth wrapping tool (19) returns to the standby position. The insert (21) operates as follows. Each one side end (5a).

Adhesive means (6) located at the top of the folded state of (5b), (5c), and (5d) to fix the folded state.
) is applied to the one side end (5d), the one side end (
5d) to perform the wrapping operation, and act on the adhesive fixing means (6) at the final stage of the wrapping operation to perform the adhesive fixing action.

As shown in FIGS. 1 to 3, the fourth wrapping tool (
21) includes a swinging drive arm (24) driven by a swinging motor (23), and a roller support arm (35) which is pivotally supported at the tip of the swinging drive arm (24) so as to be able to swing relative to it.
and a wrapping roller (28) which is pivotally supported at the tip of the roller support arm (35), and almost the third wrapping tool (
20), except that the roller support arm (35) is further divided into a base end (35A) and a distal end (35B) so as to be bendable and swingable. The wrapping roller (28) is pressed against the outer peripheral surface of the object to be packaged (C) by the urging spring (43) in the same way as the wrapping roller (28) of the third wrapping tool (20). Moving. In other words, the cam plate (3) has a long cam hole (32a) formed therein.
2), a guide roller (33) that engages with the cam hole (32a) and moves is pivotally supported on the rear end of the roller support arm (35), and the packaging roller (28) is moved along a predetermined trajectory. It should be moved (configured).

Here, an adhesive tape (6) as an adhesive fixing means is attached to one side end (5d) of the packaging sheet (5), and when the one side end (5d) is folded back and overlapped at a predetermined position, the adhesive tape ( The wrapping roller (28) moves on the top of 6), and the one side edge (5a) and (5b) which are folded into four layers are
), (5c), (5d) Paste comrades. Here, since the tip of the roller support arm (35) is bendable and swingable, the adhesive tape (6) is attached to the packaged object (C).
Even if the wrapping roller (2
8) The pressing action can be sufficiently exerted. or,
As shown in FIG. 1, in the process of causing the packaging roller (28) to act on the adhesive tape (6), the connecting swing fulcrum (a) of the tip end (35B) to the base end (3511) Move the fourth wrapper (21) to a position beyond the center line (X)5 of the object (C).
) is activated.

Therefore, the packaging roller (28)
Even if there is a difference in diameter, the working height (I
() has the advantage of fewer differences.

Next, place the packaging sheet 1-(5) at a predetermined position on the packaging workbench (1).
) supply bag that dispenses! (36) will be explained.

As shown in FIG. 9, the packaging sheets (5) are transported from the storage box (37) in which the packaging sheets (5) are stacked to the packaging work position.
Conveyance chains (41) and (41) for conveying 5) are arranged on the left and right, and a concave frame for conveyance (39) is connected to the chain links of this conveyance chain (41). The packaging sheet (5) suction nozzles (38), (38) are attached to the left and right sides of the transportation portal frame (39) so as to be movable up and down, and as shown in FIG. 10 (a), the suction nozzles (38), (38) descend and adsorb the packaging sheet (5), and lift it up as it is and as the transport portal frame (39) moves, the packaging sheet (5)
It has a 7 6 configuration for delivering the product to the packaging work position.

The working configuration with the above configuration will be explained based on FIG. 11.

■ Pay out the adhesive tape (6) to the specified position.

(2) Next, the packaging sheet (5) is taken out from the storage box (37), conveyed, and placed in a predetermined position. Then, the adhesive tape (6) is attached to one end (5d) of the packaging sheet (5) that is folded back at the end.

■ The receiver of the packaged object holding mechanism (2) is the stopper (3).
) Place the item to be packaged (C) on top. The steps up to this point are the first
This is the state shown in (a) in Figure 1.

(2) As shown in FIG. 11 (II), next, the object holding mechanism (2) is operated to hold the object (C).

■ As shown in Figure 11 (c), the first wrapping tool (18
), one end (5a) of the packaging sheet (5) is folded back onto the top surface of the object to be packaged (C), and the first wrapping plate (22)
Maintain the presser foot condition.

■ As shown in Figure 11 (=), the second
The wrapping tool (19) is operated to overlap the corresponding one side end (5b) of the packaging sheet (5) 8 on the first wrapping plate (22). When the one side end (5b) is overlapped, the first wrapper (18) returns to the standby position.

Next, one end (5c) is placed along the outer peripheral surface of the packaged item (C).
, (5d) with the third wrapping tool (
20) Blow air toward the bent area before it operates.

■ Subsequently, as shown in Fig. 11 (*) and (v), the third wrapping tool (20) is activated and when the remaining one side edge (5C) is overlaid, the second wrapping tool (19) is activated. ) returns to the standby position.

■ Furthermore, as shown in FIGS. 11 (H) and (IJ), the fourth wrapping tool (21) folds back the one end (5d) to which the adhesive tape (6) is attached and wraps the packaged object (C). and each one side edge (5a) folded in four layers with the adhesive tape (6).
), (5b), (5c), and (5d) Attach the comrades to complete the packaging work.

[Another example]

■ The number of the first packaging tools (18) etc. is not limited to what is shown in the figure, and the number of packaging sheets (5)
The shape may also be a polygon other than a square or a circle.

■ The material for the packaging sheet (5) may be paper other than resin.

■ Each time the switch is manually operated to operate the wrapping tools (18) to (21), each wrapping tool (1
8) to (21) may be operated in a semi-automatic manner.

■ Above 1. The material of the second wrapping plates (22) and (27) may be resin, as long as it is elastically deformable and can suppress the influence on the packaged item (C) in the working position of pressing the packaged item (C). It may also be a thin steel plate other than the above, or a thin steel plate whose surface is coated with resin, chrome plating, or the like.

■ The wrapping tools (18) to (21) include wrapping tools (20) and (21) provided with a wrapping roller (28), and wrapping tools (18) not provided with a wrapping roller (28).
, (19) are formed to be different from each other, but all wrapping tools (18) to (21) may be formed to include a wrapping roller (28).

■ The object to be packaged may have a cylindrical shape other than a spherical shape.

■ The cam mechanism (30) includes the wrapping tool (20).
) or packaged items (C) whose position can be adjusted relative to
The configuration may be such that the cam surface shape can be switched to one with a different cam surface shape depending on the size of the cam surface.

■ The distal end (35B) of the roller support arm (35) is connected in a cantilevered manner to the elastically deformable proximal end (35^), and the packaging roller (2) is attached to the distal end (35B).
8) may be biased in the direction of pressing against the packaged object (C) by the elastic deformation force of the spring plate, while swinging relative to the base end (35A).

(2) The fourth wrapping tool (21) may operate in a linear manner to cover the packaging sheet (5) over the object (C).

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

1

[Brief explanation of drawings]

The drawings show an embodiment of the packaging device according to the present invention, and FIGS. 1 to 3 are front views showing the operating state of the fourth wrapping device, FIG. 4 is a front view showing the wrapping mechanism, and FIG. 6 is a front view showing the wrapping device, FIG. 7 is a plan view showing the wrapping mechanism, FIG. 8 is a perspective view showing the wrapping mechanism, and FIG. Figure 9 is an overall perspective view, Figure 10 (a)
. 11(rl) is a front view showing the conveyance state of the packaging sheet, and FIGS. 11(a) to 11(s) are action views showing the packaging process, respectively. (5)...Packaging sheet, (6)...Adhesive fixing means, (18), (19), (20)
, (21)...Wrapping tool, (28)...
・・Wrapping roller, (35A)・Old・・Base end, (35B
)... Tip part, (C)... Item to be packaged.

Claims (1)

[Claims] Each side edge (5a), (5b), (5c), (5d) at the peripheral edge of the packaging sheet (5) on which the item to be packaged (C) is placed
is folded back and placed on the object to be packaged (C), and the other one side end (5a) of the peripheral portion that was previously folded and placed on the packaged object (C).
, (5b), (5c), a plurality of wrapping tools (18), (19), (20) that switch between an active position in which they are folded and maintained in the folded state, and a non-active position in which they are retired to a standby position.
), (21) at each one side end (5) of the packaging sheet (5).
Provided corresponding to a), (5b), (5c), (5d),
One side end (6) is placed on the top of the folded state of each of the one side ends (5a), (5b), and (5c) and is applied to the adhesive fixing means for fixing the folded state. For 5d),
A wrapping tool (2) that operates by folding its one end (5d) to perform a wrapping operation, and at the final stage of the wrapping operation, acts on the adhesive fixing means (6) to perform an adhesive fixing action.
1), a base end (35A) that performs a wrapping operation, and a distal end (35B) that is connected to the base end (35A) so as to be able to swing relative to the packaged object in a state where the base end (35A) is biased in the direction of pressing the packaged object. ), and press the one side end (5d) against the surface of the object to be packaged (C) to the tip (35B) to form a wrapping tool (21).
The packaging device is provided with a packaging roller (28) that moves on the surface of the wrapped bag by the movement of the wrapping roller (28).