JP2765686B2 - Packaging equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging device for agricultural products, which wraps a spherical object to be packaged (for example, vegetables such as lettuce and cabbage, or fruits such as melon and apple) in a packaging sheet.

[0002]

2. Description of the Related Art As the above-mentioned packaging apparatus, there is one disclosed in, for example, Japanese Patent Application Laid-Open No. 3-133710. In this packaging apparatus, a packaging table for mounting a packaging sheet and having an opening into which a spherical object to be dropped falls is provided. With the packaging sheet placed on the packaging table, the object to be packaged is inserted into the opening from above. When it is dropped, the packaging sheet is squeezed and the packaged object is supported by the lower support while being wrapped in the packaging sheet. Next, a pair of sandwiching members (12 and 16 in FIGS. 2 and 3 of the above publication) advance toward the packaged object while overlapping, and the upper portion of the packaging sheet that wraps the packaged article by the pair of sandwiching members. Is sandwiched and narrowed down, and the article to be packaged on the support base is wrapped in a packaging sheet. In this case, the opening formed by the pair of sandwiching members (the upper portion of the packaging sheet is located in the opening) is gradually closed smaller, so that the upper side of the packaging sheet in the article to be packaged on the support base. It is configured to narrow down by sandwiching the part.

[0003]

When the opening formed by the pair of sandwiching members overlapping each other as described above is to be gradually closed, the inner sides of the pair of sandwiching members are positioned above the packaging sheet. At the same time as the part is pushed toward the center, the part where the pair of sandwiching members start to overlap (see FIG. 2B and B in FIG. 3) also approaches the upper part of the packaging sheet.

Accordingly, when the upper portion of the packaging sheet touches the portion where the pair of holding members start to overlap, the upper portion of the packaging sheet is drawn into this portion, and the upper portion of the packaging sheet enters between the pair of holding members. As a result, the pair of holding members may not be able to operate. SUMMARY OF THE INVENTION It is an object of the present invention to provide a packaging apparatus in which when an upper portion of a packaging sheet is narrowed by a pair of holding members, the upper portion of the packaging sheet is not drawn in between the pair of holding members.

[0005]

A feature of the present invention resides in the following configuration in the above-described packaging apparatus. Equipped with a packaging table for mounting the packaging sheet and with an opening into which the spherical object to be dropped falls.When the object to be packaged is dropped into the opening from above, the packaging sheet is squeezed and the object to be packaged is placed on the packaging sheet. It is configured to be wrapped, and includes a support table that supports the packaged object that has fallen into the opening while being wrapped in the packaging sheet, and a pair of holding members arranged opposite to both sides of the support table, A first operation unit that movably supports a position close to the support base and a position laterally and outwardly away from the support base, and that moves and drives a pair of holding members to both positions;
While overlapping the pair of holding members, the opening formed by the pair of holding members is closed so that the upper portion of the packaging sheet in the packaged object of the support is sandwiched and narrowed down, and A pair of auxiliary holding members that are movable close to and away from each other along a direction substantially perpendicular to the moving direction of the pair of holding members are provided along the upper surface or the lower surface of the pair of holding members, and are formed by the pair of holding members. A second driving mechanism for moving the pair of auxiliary holding members to the side closer to the support base such that the inner sides of the pair of auxiliary holding members are located at the center side of the opening where both holding members start to overlap. An operating means is provided, and a pair of holding members and a pair of auxiliary holding members sandwich and squeeze the upper portion of the packaging sheet in the packaged object on the support base to wrap the packaged object in the packaging sheet.

[0006]

According to the feature of the first aspect, for example, FIG.
As shown in (b), when the holding member 14 on the right side of the drawing is driven to move leftward on the paper, and the holding member 15 on the left side of the drawing is driven rightward on the paper, the upper portion 1a of the packaging sheet is narrowed down. The opening formed by the pair of holding members 14 and 15 becomes smaller, and the upper portion 1a of the packaging sheet is narrowed down. In this case, the pair of auxiliary holding members 12 is positioned such that the inner sides of the pair of auxiliary holding members 12 are located on the center side of the portion B where the holding members 14 and 15 start to overlap.
Moves to the side closer to the support table 3 and moves the upper portion 1a of the packaging sheet 1 toward the center side while keeping it away from the portion B where it starts to overlap.

[0007]

According to the first aspect of the present invention, the pair of auxiliary holding members move the upper portion of the packaging sheet toward the center side while keeping the upper portion of the packaging sheet away from the portion where the pair of holding members start to overlap. It is possible to prevent a situation in which the member is pulled between the pair of holding members. As a result, a malfunction of the pair of holding members is prevented beforehand, and the overall work efficiency of the packaging device can be improved.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 7 (a), after the end of the previous packaging,
One packaging sheet 1 cut to a predetermined length is placed on a packaging table 2. Next, when the article to be packaged A is dropped into the opening 2 a of the packaging table 2, the article to be packaged A falls on the lower support table 3 while being wrapped in the packaging sheet 1. In this state, when the operator pushes and operates a start switch (not shown), FIG.
As shown in (b), the support base 3 is moved down, and the packaging sheet 1 is squeezed. In this case, a plurality of rubber plate-shaped auxiliary squeezing members 11 are provided below the opening 2a so as to surround the article A to be packaged, and the auxiliary squeezing members 11 squeeze the packaging sheet 1 well.

Next, a pair of holding members 14, 15 arranged on the lower side of the packaging table 2 advance to the packaging sheet 1 side as shown in FIGS. The upper part 1a of the sheet 1 is narrowed down. Thereby, the packaged object A is almost completely wrapped in the packaging sheet 1. Thereafter, as shown in FIG. 8A, the pair of disc cutters 28 advance along the upper surfaces of the pair of holding members 14, 15, and the upper portion 1a of the packaging sheet 1 is cut off.

Next, as shown in FIG. 8B, the adhesive tape 4 cut to a predetermined length is placed over the upper end of the packaging sheet 1 and the ends of the pair of holding members 14 and 15, and FIG.
As shown in (c), the adhesive tape 4 is pressed from above by the sponge member 47. While the adhesive tape 4 is pressed by the sponge member 47, the pair of holding members 14 and 15 are opened as shown in FIG. Tape 4
Is surely adhered to the packaging sheet 1.

One package is thus completed. Thereafter, as shown in FIG. 9 (b), the support 3 is switched to the side-down position, and the packaged object A of the support 3 is moved to the slide. It is released to 55 and collected. FIG. 9C shows the state of the packaged object A that has been packaged as described above.

Next, the structure for driving the pair of holding members 14, 15 will be described. As shown in FIGS. 1 and 4,
A round bar-shaped first guide rail 5 and a plate-shaped second guide rail 6 are provided below the packaging table 2 on both sides of the opening 2a. Boss portions 14a, 15a are fixed to one ends of the pair of holding members 14, 15, and the boss portions 14a, 15
a is movably externally fitted to the first guide rail 5, and the side portions 14b, 15b on the opposite sides of the pair of holding members 14, 15 are provided.
Is mounted on the second guide rail 6 and is bent below the second guide rail 6.

A bracket 7 is fixed to a boss 14a of one of the holding members 14, and a double-acting air cylinder 8 (corresponding to first operating means) is connected to the bracket 7. A balance arm 9 is swingably supported around a vertical axis P1 of the fixed portion, and a roller 9a at one end of the balance arm 9 is inserted into a concave portion of the bracket 7. A link rod 10 is erected and connected between the other end of the balance arm 9 and the boss 15a of the other holding member 15.

With the above structure, when the air cylinder 8 in the extended state is contracted as shown in FIGS. 2A and 2B, the holding member 14 on the right side of the drawing is driven to move leftward on the drawing. In conjunction with this operation, the balance arm 9 swings clockwise in the drawing. As a result, the link rod 10 is pulled rightward on the paper, and the other holding member 15 is driven to move rightward on the paper. Thereby, as shown in FIG. 3, the upper portion 1 a of the packaging sheet 1 is narrowed down by the pair of holding members 14 and 15.

Below the pair of holding members 14 and 15, there is provided a pair of auxiliary holding members 12 which swing in a direction substantially perpendicular to the moving direction of the pair of holding members 14 and 15. The auxiliary holding member 12 will be described. FIG.
As shown in FIG. 4A and FIG.
5, a pair of auxiliary holding members 12 are swingably supported around the longitudinal axis P2 of the fixed portion. A pair of auxiliary holding members 12 is provided with a long hole 12a in the shape of a letter. A pair of rollers 14c provided on the back surface of one holding member 14 are inserted into the long holes 12a, and the pair of auxiliary holding members 12 Guide plate 13 for supporting the device so as not to face downward
Is provided.

With the above structure, the air cylinder 8 starts to contract from the state shown in FIG.
When the rollers 4 and 15 start approaching each other, the pair of opened auxiliary holding members 12 also starts approaching each other in conjunction with the progress of the roller 14c. In this case, the pair of holding members 14, 1
The shape of the long hole 12a and the position of the roller 14c are set so that the pair of auxiliary holding members 12 start approaching faster than 5 (the above corresponds to the second operation means).

Thus, as shown in FIGS. 2 (b) and 3, the inner side of the pair of auxiliary holding members 12 is located closer to the center than the portion B where the pair of holding members 14 and 15 start to overlap. That is, the upper portion 1a of the packaging sheet 1 is moved toward the center side inside the pair of auxiliary holding members 12 and the upper portion 1a of the packaging sheet 1 is placed on a portion B where the pair of holding members 14 and 15 start to overlap. In order to prevent the package sheet 1 from being touched, the packaging sheet 1 is prevented from being caught between the pair of holding members 14 and 15 at the portion B where the overlapping starts.

As shown in FIG. 2B to FIG. 3, the parallel portions 12b of the long holes 12a in the pair of auxiliary holding members 12 are formed.
When the roller 14c reaches the position, even if one of the holding members 14 is further moved to the left in the drawing, the pair of auxiliary holding members 12 is maintained in the state shown in FIG. When the air cylinder 8 is further contracted, the pair of holding members 14 and 15 are further closed as shown in FIG.
The upper portion 1a of the packaging sheet 1 is almost completely squeezed.
Also in this case, as shown in FIG. 3, the portion B where the pair of holding members 14 and 15 starts to overlap does not reach the upper portion 1 a of the packaging sheet 1.

When the squeezing of the packaging sheet 1 is completed as described above, as shown in FIG. 8A, the pair of disk cutters 28 advance on the upper surfaces of the pair of holding members 14 and 15, and Is cut off, and the disk cutter 28 stops at the position shown in FIG. Next, the air cylinder 8 (see FIG. 3) in the contracted state is extended, and the pair of holding members 14 and 15 are opened as shown in FIGS.

In this case, an injection nozzle 17 is provided on a frame 16 supporting a disk cutter 28 as shown in FIG. 5, and as shown in FIG. 6, a switching operation of a compressed air supply direction from an air pump 18 is performed. A supply passage 20 for extending the air cylinder 8 (opening the pair of holding members 14 and 15) between the switching valve 19 and the air cylinder 8.
, Another supply path 21 is branched in parallel, and this supply path 21 is connected to the injection nozzle 17.

As shown in FIG. 5, when the upper portion 1a of the packaging sheet 1 is cut by the disk cutter 28, the upper portion 1a of the
8 often remains attached. Thereby, after the disk cutter 28 stops, the compressed air is supplied to the supply path 20 to extend the air cylinder 8 and open the pair of holding members 14 and 15.
Is supplied to the injection nozzle 17 via the supply path 21, and the compressed air is injected from the injection nozzle 17, and the upper portion 1 a of the packaging sheet 1 attached to the disc cutter 28.
Is blown away.

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure for driving a pair of holding members to move.

FIG. 2 is a plan view showing a state before and after a pair of holding members are driven to move toward a support base by an air cylinder;

FIG. 3 is a plan view showing a state in which a pair of holding members are driven to move to a support base side until a stroke end by an air cylinder.

FIG. 4 is a vertical cross-sectional front view showing a structure for driving a pair of holding members to move.

FIG. 5 is a perspective view showing a state in which a pair of holding members are opened after the upper part of the packaging sheet is cut by the disk cutter, and the upper part of the packaging sheet attached to the disk cutter is blown off by the injection nozzle;

FIG. 6 is a circuit diagram of an air cylinder and an injection nozzle of a pair of holding members.

FIG. 7 is a perspective view showing a flow of packaging from dropping of a packaged object into an opening to narrowing of a packaging sheet by a pair of holding members.

FIG. 8 is a perspective view showing the flow of packaging from the cutting of the upper part of the packaging sheet to the pressing of the adhesive tape by the sponge member.

FIG. 9 is a perspective view showing the flow of packaging from the opening operation of the pair of holding members to the release of the packaged object, and the state where packaging is completed.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 packaging sheet 1a upper part of packaging sheet 2 packaging table 2a opening of packaging table 3 support table 8 first operating means 12 auxiliary clamping members 14, 15 clamping member A part to be packaged B clamping member starts to overlap

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65B 25/00-25/24 B65B 11/00-11/58

Claims (1)

(57) [Claims] 1. A packaging table (2) for mounting a packaging sheet (1) and having an opening (2a) into which a spherical object (A) falls.
When the object to be packaged (A) is dropped into the opening (2a) from above, the packaging sheet (1) is squeezed and the object to be packaged (A) is wrapped in the packaging sheet (1). The opening (2a) while being wrapped in a packaging sheet (1).
A support base (3) for supporting the packaged object (A) dropped into the inside
And a pair of holding members (14) and (15) arranged on both sides of the support base (3) so as to be opposed to each other, and a position close to the support base (3) and the support base (3). Movably supported over a position laterally and outwardly away from the pair of holding members (14),
(15) is provided with a first operating means (8) for moving and driving the pair of holding members (14), (1).
5) while overlapping the pair of holding members (1).
4), by closing the opening formed in (15),
The upper part (1a) of the packaging sheet (1) in the packaged object (A) of the support base (3) is configured to be sandwiched and narrowed, and the pair of holding members ( 1
4) Along a direction substantially perpendicular to the moving direction of (15),
A pair of auxiliary holding members (12) movable close to and away from each other
Is provided along the upper or lower surface of the pair of holding members (14) and (15), and the pair of holding members (14) and (1) are provided.
In the opening formed in 5), both holding members (14),
The pair of complementary parts (15) are more than the part (B) where overlapping starts.
The inner side of the auxiliary holding member (12) is located at the center.
A second operating means for driving the pair of auxiliary holding members (12) to move closer to the support table (3); and a pair of auxiliary holding members (14), (15) and a pair of auxiliary holding members. The member (12) sandwiches and narrows the upper part (1a) of the packaging sheet (1) in the package (A) of the support base (3) so as to wrap the package (A) in the packaging sheet (1). The configured packaging device.