JPH01279002A - Packing method - Google Patents

Abstract

PURPOSE:To smoothly place contents into a bag, by supporting the bag at the bottom thereof by a supporter which is inserted from the opening of a package bottom while placed and by providing successively the bag with the space to receive contents by means of the lowering supporter. CONSTITUTION:A supporter 58 is inserted into a packing paper P from the opening P4 at the bottom thereof and a supporting body 59 is raised and lowered by a supporting leg 60. The contents T to be packed are placed in a bag 53 through the openings of a second and a third conveyors 2, 3 when the supporting body 59 is raised at the uppermost position. The contents are placed in turn and corresponding to the increased contents the supporting body 59 is lowered and returned outward from the opening P4 of the bottom of the packing paper P when the required volume of contents are placed into the bag 53. Lids P3 are simultaneously folded inward to become the bottom of the contents T. The packed contents are forwarded thereafter and sealed at the top and the bottom to complete the packing process.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a packaging method.

<Prior art> When packaging an item by placing it in a packing paper such as a cardboard box, there are cases where the item is first placed in a bag such as a plastic bag and then packed. .

This is often done when the item to be packaged requires hygiene or airtightness.

In order to automate this process, it is common practice to include a step in the packaging paper assembly process in which the bag is previously placed inside the packaging paper before packaging.

In this case, it is reasonable to perform the insertion of the bag into the packaging paper and the packaging of the items to be packed in the same line, from the perspective of shortening the process time.

In carrying out the above-mentioned packaging, the opening end of the bag is placed within the packaging paper so that the opening of the packaging paper and the opening of the bag inside the packaging paper are aligned. As a result, when an item to be packed is thrown into the upright packaging paper, it is accommodated in a bag inside the packaging paper.

<Problem to be solved by the invention> However, in the above-mentioned packaging method, since the bag body is not self-supporting, the shape of the bag may be distorted due to the force of the object being thrown into the packing paper, or the object may be damaged. In many cases, the packing paper could not withstand the weight of the packing paper and fell to the bottom of the packing paper, making it impossible to accommodate subsequent items to be packed.

The present invention aims to solve the above problems.

Means for Solving the Problems> The present invention, however, includes: (1) a pre-process of assembling the side surfaces of a package to be formed into a box to make it self-supporting; and a step of enclosing a bag inside the package and opening the bag. A bag insertion process in which the end is hooked to the upper opening end of the packaging body, and a housing process in which the items to be packed are thrown into the bag from the upper opening of the packaging body are set, and the packaging process is performed while the above packaging process is being carried out. A packing method characterized in that the bottom of the bag is supported by inserting a support into the bottom opening of the bag. ■The support is used to hold the items to be packed until the amount that is expected to be accommodated in one package is reached. An object of the present invention is to provide a packing method characterized in that the container moves backward toward the bottom of the package as the amount of the container increases.

Effects> In the present invention having the above-mentioned means, (1) the support supports the bottom of the bag and eliminates the bias applied to the bag when the items to be packed are put therein.

(2) By lowering the support, it is possible to sequentially provide space for receiving the items to be packed into the bag.

<Embodiments> Preferred embodiments of the present invention will be described in detail below by way of example with reference to the drawings. However, the dimensions, shapes, materials, relative positions, etc. of the components described in this example are not intended to limit the scope of this invention to only those, unless otherwise specified. , is merely an illustrative example.

FIGS. 1(A) to 1(K) show process diagrams in order.

Packing paper (P) ("
Synonymous with "packaging". The material is not limited to hard paper such as cardboard or cardboard, but may also be plastic or other materials that are self-supporting and easy to assemble, that is, other materials suitable for packaging. ) to assemble and stand on its own. In the case of Fig. 2, the lid pieces (Pa) (
pa) are all up. In the case of FIG. 3, the bottom cover piece (P) is partially folded in and placed in each step of FIG. 1. In the case of FIG. 3, it is assumed that the support described later can be inserted. That is, it has an opening (P4) at the bottom into which the support can be inserted.

The steps shown in FIG. 1 will be described below as an example carried out in the state shown in FIG. 2.

Figure 1 (^) shows the starting position of the line. (5G) is a conveyor, and (51) is a holding section for transfer.

The bag body (53) is inserted from above by the bag body insertion device (52).
is inserted into the packing paper (P). The bag body (53) may be made of polyethylene, vinyl, paper, cloth, or any other material that can be formed into a bag shape.

Suitable bag insertion devices (52) are listed below. The bag insertion device (52) has an appropriate number of arms (55).
and insert the arm (55) into the inside of the bag (53) through the opening (54). A pressing member (56) is provided at an appropriate position on the arm (55). Opening (5
In order to increase the opening diameter of the opening (54), the pressing member (56) opens in the radial direction (1), and the bag (53) is held by the bias against the inner periphery of the opening (54) at this time.

As shown in Figure 1 (B), the arm (55
) and the pressing member (56), the packing paper CP> cover piece (P
, ) are sandwiched between them, and at the same time, the opening periphery of the bag body (53) is folded back so as to cover the lid piece (P, ).

As shown in FIG. 1(C), the bag (53) is wrapped in packing paper (P
), the bag insertion device (52) is inserted into the arm (5
5) Raise and return to the original position. The packing paper (P) is conveyed to the next process (FIG. 1 (D)) by a conveyor (5G).

Figure 1 (D) shows the state in which the packing paper (P) has come to the intersection with the transfer line (57) of the article to be packaged (T) in Figure 4 (the line is shown in plan view). show. Transfer line (5
7) is located above the conveyor (50).

If the object to be packed is powder or fluid, the bag (P
), but in the case of stacking regular-sized items for packaging, suitable embodiments of the above-mentioned transfer line (57) will be described below.

The transfer line (57) mainly consists of a first conveyor (1), and a second conveyor (2) and a third conveyor (3) arranged near the end point of the first conveyor (1). In other words, from the end point of the first conveyor (1) that transfers the items to be packed from another conveyor, there is a second conveyor (1) in the extending direction.
A conveyor (2) and a third conveyor (3) are arranged. 1st
As for the conveyor (1), it may be carried out using a belt conveyor, or it may be carried out using other stages such as a roller conveyor. The second conveyor and the third conveyor are configured to be slidable toward each other (in the X-X' force direction). Here, as an example, the following configuration is given.

As shown in FIG. 5(I), two long strip plates (4) (4) are arranged in parallel so that their plate surfaces face each other.

These plate-like bodies (4) (4) are equipped with hydraulic actuators (6) (6) on the outside so that they can slide in directions away from each other, and the hydraulic actuators (6)
) (6) (plate-shaped body (4) (4)
(It is not limited to this method, as long as it has a configuration that allows the two to move away from each other.)

Guide bars (5) (5) parallel to the sliding direction are provided on both sides of the actuator (6) (6) in the sliding direction,
Actuator (6) Provides a sliding guide for (6).

One plate-like body (4) is provided with a second conveyor (2) on the surface facing the other plate-like body (4), and similarly, a third conveyor (3) is provided on the other plate-like body. is provided.

The second conveyor (2) and the third conveyor (3) are stopped with the transferred object (T) securely placed on top of both the second conveyor (2) and the third conveyor (3).
) and move the second conveyor (2) and third conveyor (
3) be constructed in such a way that it will not fall due to opening and closing.

Transferred objects (T
) is provided with a pressing plate (9) (9) (9°) to adjust the mounting condition.

The pressing plates (9) (9) slide on the second conveyor (2) and the third conveyor (3) to press both sides (with respect to the traveling direction) of the transferred object (T) and position it. . Pressing plate (9°)
, presses the transferred object (T) from the front (with respect to the traveling direction) and positions it in the same way. These positioning means ensure that the object to be transferred (T) falls onto the packaging paper below the second conveyor (2) and the third conveyor (3).

The pressing plates (9), (9), and (9') are configured to slide back to their original positions once their positions are determined or when the transferred object (T) falls.

When the transferred object (T) is a thin plate, the pressing plates (9) (9)
) and the second conveyor (2) or the third conveyor (3) and the transferred object (T) is not placed in the correct position, or the object does not fall as planned due to opening and closing of the conveyor. arise. Taking this into consideration, the second conveyor (2) and the third conveyor (3) are implemented using roller conveyors. This roller conveyor has multiple rollers (
r) is rotatably fixed to the plate-shaped body (4) (4). The rollers (r) are arranged so that their axial directions are parallel, forming a horizontal roller group along the transport direction. It is sufficient that a suitable one of the plurality of rollers (r) rotates by itself to supply the conveying force (of course, there is no need to configure the rollers (r) at the edges to rotate by themselves. isn't it). The rollers (r) are arranged at appropriate intervals (d) from each other. By using the roller conveyor in this manner, the hanging portion (r), which will be described later, can be set.

As shown in FIG. 5 (II), the pressing plates (9) (9) pass through this interval (d) and have a hanging portion (r) extending in the hanging direction.
have an appropriate number of This FIG. 5 (IT) is a view of the second conveyor (2) from the (Y) direction of FIG. 5 (t).

Such hanging parts (OCO) are provided at appropriate positions of the suppression plates (9) (9) of both roller conveyors (2) (3),
This is to prevent objects to be transferred from being caught between the pressing plate (9) and the roller conveyor. Here, the object to be transferred (T) is the object to be packed.

The explanation will be given by returning to FIG. 1(D) again. At this position, the support body (58) is pushed up from below by appropriate means. The support (58) has a bottom opening i (
It has a shape that allows it to enter inside the packaging paper (P) from the inside of the packaging paper (P). Here, it is composed of a cylindrical support body (59) and a rod-shaped support leg (6o) passing through the longitudinal center of the support body (59). Of course, the supporting body (59) is limited to a cylinder.
It is not intended that the shape be a square column, but it may be a prism or other shape. For example, there may be a plurality of portions that directly contact the bottom of the bag (53). A guide groove (61) is threaded on the surface of the support leg (60). On the other hand, inside the support body (59), a hollow part (62) for receiving the support leg (60) is provided, and a ball or protrusion (63) is provided at an appropriate position inside the hollow part (62). , the above guide * (61) is configured to be traced. With the above configuration, when the support leg (60) is rotated by an appropriate means, the support body (
59) goes up and down.

Of course, it is conceivable to use an actuator using fluid pressure in addition to the one shown as a support, and this can be implemented as another method. It is also possible to implement by other mechanical means.

As shown in FIG. 1(E), when the support main body (59) is in a state approaching the top, the article to be packed (T )
(Transfer item (T)) is thrown into the bag (53).

As shown in FIG. 1(P), objects to be packed (T) are sequentially thrown in, and as the number of objects to be packed (T) thrown in increases, the support body (59) is lowered. This lowering can be achieved by rotating the supporting leg (60) in the opposite direction to the rotation of the supporting leg (60) during the ascent.

As shown in FIG. 1 (G), when the specified item to be packed (T) is packed into the bag (53), the support body (59) opens the bottom opening (P4) of the packing paper (P). ) to return to the outside. At the same time, the lid pieces (Ps) are folded in order and the packaging paper (T) is folded in.
Make the bottom part. Escape of the support body (59) and the lid piece (P)
, ) are done at the same time, the bag body (
53) does not fall from the bottom of the packing paper (P).

In this way, the packing paper CP) is transferred to the next step shown in FIG. 1(H). The opening of the bag (53) is sealed by a sealing device (64) that descends from above and is equipped with a vacuum plate (65) ((+) in FIG. 1).

Thereafter, the packaging paper (P) is sent to the step shown in FIG. 1 (J), where the bottom part of the packaging paper (P) is completely folded into the lid piece (P3) by the lower folding part (66). On the other hand, the upper part of the packaging paper (P) is also folded in by the upper folding part (67) and sent to the next process. As shown in FIG. 1(b), the packing paper CP) passes between the upper packing tape tensioning machine (68) and the lower packing tape tensioning machine (69), and at this time, the upper and lower parts of the packing paper are sealed.

Packing is completed through the steps shown in FIGS. 1(A) to 1(K) above.

<Effects of the Invention> By carrying out the present invention, it is possible to smoothly insert an object to be packed into a bag provided inside a box made of packing paper.

[Brief explanation of the drawing]

FIG. 1(A) is an explanatory view showing the state immediately before the bag is inserted into the packaging paper, and FIG. 1(B) is an explanatory view showing the state in which the bag is inserted. FIG. 1(C) is an explanatory diagram showing the operating state of the peripheral device after the insertion of the bag into the packaging paper is completed. FIG. 1(D) is an explanatory diagram showing the operating state of the support body, and FIG. 1(H) is an explanatory diagram showing the state in which the article to be packed is put in. FIG. 1(F) is an explanatory diagram showing the interlocking state of the support and the loading of the object to be packaged. FIG. 1(G) is an explanatory diagram showing the interlocking state of the completion of loading of the object to be packed and the extraction of the support body. FIG. 1 (11) is an explanatory view showing the closing operation of the bag body, and FIG. 1 (1) is an explanatory view showing the operation completed state. FIG. 1(J) is an explanatory diagram showing the state in which the packaging paper is folded up and down. FIG. 1(K) is an explanatory diagram showing the upper and lower taping operations of the packing paper. FIG. 2 is a perspective view showing a state in which the packaging paper is folded after the pre-processing process, and FIG. 3 is a perspective view showing another embodiment at that time. FIG. 4 is an explanatory plan view of the main parts of the process. FIG. 5(1) is a plan view showing one embodiment of the means for inserting objects to be packaged, and FIG. 5(n) is a front view of the main parts thereof. (59)...Support body, (60)...Support leg, (61)...Guide groove,

Claims (1)

[Scope of Claims] 1. A pre-process of assembling the sides of the package to be formed into a box so that it becomes self-supporting, and enclosing the bag inside the package and connecting the open end of the bag to the top opening of the package. There is a process of installing the bag into the bag by hooking it on the end, and a storing process of putting the items to be packed into the bag from the top opening of the package. A packaging method characterized in that the bottom of the bag is supported by inserting the bag. 2. Claim 2, characterized in that the support body recedes toward the bottom of the package as the amount of items to be packaged increases until the amount of the packaged objects is reached. Packing method described in Section 1.