JPH11165708A - Suction-holder for agricultural product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an agricultural product to be reliably suction-held irrespective of its shape and realize flexibility to easily support various kinds of agricultural products when a spherical agricultural product is sucked for transfer and transportation by constituting of a plurality of cylinders comprising a cylinder with a lower end having elasticity which are formed concentrically with different diameters. SOLUTION: A negative pressure supply port 3 is formed on an upper part of a first cylinder 2, while bellows 4 having an inner diameter of R1 and an outer diameter of R2 are formed at a lower part. An annular protrusion 6 is formed on an upper outer peripheral face of the first cylinder 2, wherein a second cylinder 7 is detachably fitted by an annular fitting recess 8. Bellows 9 having an inner diameter of R3 and an outer diameter of R4 are formed to be larger than the first cylinder 2 on a lower part of the second cylinder 7. Therefore, even when an entire circumference of a lower end rim 4a of the bellows 4 cannot be in tight contact with a surface of an agricultural product at the time of sucking the product, an entire circumference of a lower end rim 9a of the bellows 9 of the second cylinder 7 can be in tight contact with the surface of the agricultural product to suction-hold the product.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to the adsorption of agricultural products used for transporting and transporting long agricultural products such as eggplants and cucumbers, or spherical agricultural products such as persimmons, peaches, pears, apples and melons. Regarding the holder.

[0002]

2. Description of the Related Art Conventionally, as an adsorption holder for adsorbing and holding agricultural products, for example, those shown in FIGS. 6 and 7 are known. The suction holding body 51 shown in FIG. 6 has a suction pad 52 formed with a negative pressure supply port 53 in the upper part and a bellows shape (bellows shape) in the lower part. A negative pressure supply pipe 54 is connected. Also,
The suction holding body 61 shown in FIG. 7 has a suction pad 62 formed with a negative pressure supply port 63 at the upper part and a cup-shaped lower part, and the negative pressure supply port of the suction pad 62 is connected to the negative pressure supply pipe 6.
4 are connected.

As shown in FIG. 8 (however, the case of the suction holding body 51 is used), the suction holding bodies 51 and 61 are formed by elastically deforming the elastic lower end edge 52a of the suction pad 52 to the surface of the agricultural product W. Make contact. Then, by suctioning the inside of the suction pad 52 to create a negative pressure through the negative pressure supply pipe 54 connected to the negative pressure supply port 53, the entire periphery of the lower end edge 52 a of the suction pad 52 is stored in the tray 55. The surface of the agricultural product W accommodated in the concave portion 55a is adsorbed to the adsorbent holder 51.
And the agricultural product W is held. Similarly to the suction holding body 51, the suction holding body 61 holds the agricultural product W by suctioning the surface of the agricultural product W by the lower edge 62a of the suction pad 62 (see FIG. 7). .

[0004]

However, such adsorption holders 51 and 61 have a problem that an adsorption error may occur depending on the direction of the agricultural product W at the time of adsorption. That is, as shown in FIG. 8, a normal state (for example, agricultural products W) is stored in the accommodation recess 55a of the tray 55.
In a state in which the stem H portion of the stalk is directed upward), the entire periphery of the lower end edge 52a of the suction pad 52 of the suction holding body 51 does not adhere to the surface of the agricultural product W, and no suction error occurs.

However, for example, as shown in FIG. 9, when the agricultural product W is stored in the storage recess 55a of the tray 55 in an oblique state, the lower end edge 52 of the suction pad 52 is removed.
A part of a may come into contact with the stem H of the agricultural product W from above, and a gap K portion where the lower edge 52a does not contact the surface of the agricultural product W may occur.

In such a case, even if the inside of the suction pad 52 is made to have a negative pressure by the negative pressure supply pipe 54, the inside of the suction pad 52 can be made to have a sufficient negative pressure by the gap K between the lower edges 52a of the suction pad 52. No, that is, the lower edge 5 of the suction pad 52
The entire circumference of 2a cannot be brought into close contact with the surface of the agricultural product to be adsorbed, and the adsorption of the agricultural product W by the adsorption holding body 51 will occur. This suction error also occurs in the suction holding body 61 in the same manner.

In recent years, the packing of agricultural products W has
It is being carried out by a boxing robot for automation. In such a case, a plurality of suction holding bodies 51 and 61 as described above are attached to the tip of the arm of the box packing robot, for example, from a tray (pallet) waiting on a storage conveyor of a sorting line. In general, the individual agricultural products W are adsorbed at a time, and are transported to a boxing position where a cardboard box is set, and are boxed.

However, the plurality of suction holders 51, 62
If one of the suction holding members 51, 61 has a suction error of the agricultural product W, for example, the box packing robot stops and the box packing operation is interrupted, or the operator constantly monitors the box packing operation, and In such a case, it is necessary to replenish the agricultural products W, thereby lowering the work efficiency of the boxing operation of the agricultural products W. This is not limited to the case where the agricultural product W is transported and packed in a box, but the same applies to the case where the agricultural product W is transported to a predetermined position.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an agricultural product adsorption holding body capable of reliably absorbing and holding agricultural products regardless of the shape of the agricultural products. The invention described in claim 5 has the object of the invention described in claims 1 to 4,
It is an object of the present invention to provide a versatile agricultural product adsorption holder that can easily cope with various agricultural products.

[0010]

In order to achieve the above object, according to the first aspect of the present invention, at least a lower end portion has an elastic cylinder, and the cylinder is provided by supplying a negative pressure to the cylinder. , Wherein the cylindrical body is composed of a plurality of cylindrical bodies formed concentrically with different diameters.

[0011] With this configuration, when the entire lower end edge of the inner cylinder of the two cylinders having elasticity is in contact with the surface of the agricultural product, the inner cylinder is supplied by negative pressure supply. The inside is set to a negative pressure, and the agricultural product is sucked and held by the cylinder. On the other hand, in the case where a gap that does not contact the surface of the agricultural product occurs at a part of the lower edge of the inner cylinder, the entire lower edge of the outer cylinder contacts the surface of the agricultural product,
A negative pressure is applied to the inside of the outer cylinder through the gap between the inner cylinder and the agricultural product, and the agricultural product is absorbed and held by the outer cylinder. Therefore, even when agricultural products having irregularities due to, for example, a stalk or a depression of a ridge or a ridge, are not stored in a tray or the like in a proper state, the lower end edge of at least one of the plurality of cylinders. The entire circumference can be brought into contact with the surface of the agricultural product, and the agricultural product can be surely adsorbed and held.

Further, the invention according to claim 2 is characterized in that at least the lower end of the cylindrical body is formed in a bellows-type structure. With this configuration, the bellows portion of the cylindrical body extends. It shrinks, and the entire periphery of the lower end edge easily and satisfactorily comes into contact with, for example, the uneven shape of the surface of the agricultural product, and the adsorption and holding of the agricultural product are further ensured.

According to a third aspect of the present invention, a negative pressure supply port capable of generating a negative pressure in the cylinder is formed at an upper portion of the innermost cylinder of the plurality of cylinders. And With this configuration, when the entire lower end edge of the innermost cylinder comes into contact with the surface of the agricultural product, the outermost cylinder does not act on the adsorption of the agricultural product, and the agricultural product is collected by the innermost cylinder. Adsorption can be reliably performed, and the negative pressure supply mechanism can be simplified.

[0014] In the invention according to claim 4, the innermost cylinder and the outer cylinder of the plurality of cylinders are set to have different contact pressures on the surface of the agricultural product. It is characterized by the following. With such a configuration, for example, by changing the number of peaks (valleys), the position of the lower edge, the wall thickness, and the like of the outer cylinder with respect to the innermost cylinder, the elastic force is made different. In addition, the contact pressure of a plurality of cylinders with agricultural products can be made different. Thereby, a predetermined cylindrical body of the plurality of cylindrical bodies can be brought into contact with a predetermined position on the surface of the agricultural product of various shapes at an optimal contact pressure, and the various agricultural products are more reliably adsorbed and held.

According to a fifth aspect of the present invention, a cylinder other than the innermost one of the plurality of cylinders is detachably mounted on the innermost cylinder. It is characterized by. With this configuration, for example, by variously setting the size of the outer cylinder, it is possible to easily cope with the adsorption and holding of various agricultural products, and by removing the outer cylinder, for example, one cylinder However, it is possible to cope with agricultural products with few adsorption errors, and to obtain an adsorption holder having excellent versatility.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 4 show an embodiment of an agricultural product adsorption holding body according to the present invention.
Is a cross-sectional view, and FIGS. 2 to 4 are cross-sectional views showing the operation state.

In FIG. 1, a suction holding member 1 has a substantially cylindrical first cylindrical member 2 formed of an elastic material such as rubber, for example, and a negative pressure is supplied to an upper portion of the first cylindrical member 2. A mouth 3 is formed, and a bellows portion 4 having an inner diameter R1 and an outer diameter R2 is formed at a lower portion. A negative pressure supply pipe 5 is provided at the negative pressure supply port 3.
One end of the first cylindrical body 2 is fitted and connected, and is sucked through the negative pressure supply pipe 5 so that, for example, the inside of the first cylindrical body 2 is made to have a negative pressure.

An annular projection 6 is formed on the outer peripheral surface of the upper part of the first cylinder 2, and the projection 6 has a second cylinder 7
Are detachably fitted. The second cylinder 7 is formed of the same elastic material as rubber as the first cylinder 2,
An annular fitting recess 8 is formed in the upper inner surface, and the fitting recess 8 is fitted to the projection 6 of the first cylinder 2 to be integrally attached to the first cylinder 2. ing.

When the second cylinder 7 is attached to the first cylinder 2, its upper inner surface is in close contact with the upper outer surface of the first cylinder 2 with airtightness. And, for example, the second cylinder 7
By applying a predetermined deformation force to the upper part of the first cylinder 2 or the upper part of the first cylinder 2, the fitting recess 8 is detached from the projection 6, and the second cylinder 7 is detachable from the first cylinder 2. ing.

A bellows portion 9 having an inner diameter R3 and an outer diameter R4 is formed at a lower portion of the second cylindrical body 7, and the inner diameter R of the bellows portion 9 is formed.
The three dimensions are set to be larger by a predetermined dimension w than the outer diameter R2 of the first cylindrical body 2, that is, R1 <R2 <R3 <R.
4 is set. The lower edge 4a of the bellows portion 4 of the first cylindrical body 2 and the lower edge 9a of the bellows portion 9 of the second cylindrical body 7 are set substantially flush with each other. The number (and the number of valleys) is the same as, for example, four and the plate thickness is set to be substantially the same. Thereby, the first cylinder 2 and the second cylinder 7
The elastic force of the bellows 4, 9 of the
Contact pressure) is set to be substantially the same.

Next, the operation of the suction holder 1 will be described with reference to FIGS. First, as shown in FIG. 2, for example, an apple as an agricultural product (hereinafter, this apple is referred to as an agricultural product W).
) Of the tray 10 of the sorting line.
The case where the stalk H is housed in a normal state, that is, the stalk H is directed substantially upward will be described.

In this case, a box packing robot (not shown) is operated to lower the suction holder 1 attached to the end of the arm, so that the first cylindrical member 2 is placed on the outer periphery of the upper surface of the agricultural product W. The bellows portion 4 is brought into contact with a predetermined contact pressure while being elastically deformed. At this time, the entire lower end edge 4a of the bellows 4 is in good contact with the smooth surface of the substantially spherical agricultural product W without any irregularities, and in this state, the negative pressure supply pipe connected to the negative pressure supply port 3. By sucking the inside of the first cylindrical body 2 to create a negative pressure via 5, the entire periphery of the lower end edge 4 a of the bellows portion 4 of the first cylindrical body 2 comes into close contact with the surface of the agricultural product W.

As a result, the entire periphery of the lower end edge 4a of the bellows portion 4 of the first cylindrical body 2 is adsorbed on the surface of the agricultural product W to hold the agricultural product W, and is absorbed and held by raising and moving the arm of the boxing robot. The agricultural product W is transferred to a boxing position where a cardboard box is set, for example. Then, by releasing the negative pressure state in the first cylindrical body 2 at this boxing position, the agricultural product W is released from the adsorption holding body 1 and packed in a cardboard box.

When the agricultural product W is adsorbed by the first cylindrical body 2, the second cylindrical body 7 is simply positioned outside the first cylindrical body 2 without contacting the surface of the agricultural product W. Or
Alternatively, as shown by a two-dot chain line in FIG.
The lower end edge 9a contacts the surface of the agricultural product W. However, even if the entire lower edge 9a of the bellows portion 9 comes into contact with the surface of the produce W, the inside of the second cylinder 9 is sucked due to the close contact of the lower end of the first cylinder 2 with the surface of the produce W. As a result, there is no negative pressure, and only the contact is made, and there is no effect on the adsorption of the agricultural product W.

On the other hand, as shown in FIG. 3, when the agricultural product W is stored in the storage recess 10a of the tray 10 in an oblique state, the suction holder 1 operates as follows. That is, the suction holding body 1 is lowered, and the bellows portions 4 and 9 of the first cylindrical body 2 and the second cylindrical body 7 are brought into predetermined contact with the surface located on the upper side of the agricultural product W while being elastically deformed. Contact with pressure.

At this time, since the agricultural product W is in an inclined state in the storage recess 10a of the tray 10, the first cylindrical body 2
A part of the lower edge 4a of the bellows portion 4 is pressed, for example, from above the fruit stalk H, and a partial area between the lower edge 4a of the bellows portion 4 and the outer peripheral surface of the produce W at the fruit stalk H portion. A gap K occurs. The generation of the gap K is not limited to the case where the lower edge 4a of the bellows portion 4 directly pushes the fruit stalk H from above, but also occurs when the lower edge 4a of the bellows portion 4 contacts the depression of the fruit stalk H portion. Become.

Due to the generation of the gap K, the entire lower end edge 4a of the bellows portion 4 of the first cylindrical body 2 cannot be brought into contact with the surface of the agricultural product W. However, the lower edge 9a of the bellows portion 9 of the second cylinder 7 located outside the first cylinder 2
Is located outside of the stem H, so that the entire lower edge 9a of the bellows 9 can be brought into contact with the surface of the agricultural product W.

Then, when suction is performed through the negative pressure supply port 3 in this state, the inside of the first cylinder 2 becomes negative pressure, and
The lower end edge 4a of the bellows portion 4 of the cylindrical body 2 comes into contact with the stem H of the agricultural product W, and the inside of the second cylindrical body 7 passes through the gap K formed between the lower end edge 4a and the surface of the agricultural product W. It is sucked and becomes a negative pressure. Thereby, the lower edge 9a of the bellows portion 9 of the second cylindrical body 7 is formed.
The whole circumference is brought into close contact with the surface of the agricultural product W, and the agricultural product W is sucked and held by the second cylindrical body 7, and is transferred and packed by a boxing robot in the same manner as in the normal state described above.

When the agricultural product W is substantially horizontal in the accommodation recess 10a of the tray 10 as shown in FIG. 4, the first cylindrical body 2 of the suction holder 1 is kept in the same manner as in the normal state.
While the bellows portion 4 is elastically deformed, the entire lower end edge 4a comes into contact with the surface of the agricultural product W. In this state, by sucking the first cylindrical body 2 through the negative pressure supply port 3, the entire lower edge 4 a of the bellows portion 4 is brought into close contact with the surface facing upward on the side surface of the agricultural product W, The agricultural product W is adsorbed and held on the adsorption holder 1.

When the agricultural product W is in a substantially horizontal orientation, the lower edge 4 of the bellows portion 4 of the first cylindrical body 2
There may be cases where the entire circumference a does not contact the surface of the agricultural product W, but in such a case, the agricultural product W is adsorbed and held by the second cylindrical body 7 as in the case of the oblique state. That is, even if the surface of the agricultural product W has some irregularities, the suction holding tool 1 having the above-described structure absorbs the agricultural product W by at least one of the first cylindrical body 2 and the second cylindrical body 7. Will be able to hold.

By the way, in the above embodiment, the inner diameters R1 and R1 of the first cylindrical body 2 and the second cylindrical body 7 of the suction holding body 1 are determined.
The dimensions such as R3 and outer diameters R2 and R4 and the number of peaks (valleys) of the bellows parts 4 and 9 are set in advance according to, for example, the size of the agricultural product W to be adsorbed. Can also be used as follows.

That is, for example, when the agricultural product W other than apples is to be adsorbed by the adsorption holder 1, the second cylinder 7 is detached from the first cylinder 2 and the inner diameter R3 and the outer diameter R are removed.
The second cylindrical body 7 is replaced with another 4 to form the adsorption holder 1, and the various agricultural products W are adsorbed and held by the adsorption holder 1. Further, in the case of the agricultural product W in which the adsorption error hardly occurs even with only the first cylinder 2, the second cylinder 7 is detached from the first cylinder 2, and the agricultural product W is produced using only the first cylinder 2. W
Is held by suction.

As described above, according to the suction holder 1 of the above embodiment, the second cylinder 7 having the bellows 9 is provided outside the first cylinder 2, so that the agricultural product W can be adsorbed at the time of adsorption. When a part of the lower edge 4a of the bellows portion 4 of the first cylindrical body 2 abuts on the stem H portion or the like of the agricultural product W, and the entire lower edge 4a of the bellows portion 4 cannot be in close contact with the surface of the agricultural product W. , The lower edge 9 of the bellows portion 9 of the second cylinder 7 located outside the first cylinder 2
The entire circumference a can be brought into close contact with the surface of the agricultural product W, and the agricultural product W can be adsorbed and held by the second cylindrical body 7.

In particular, since the bellows portions 4 and 9 that can be elastically deformed are provided at the lower portions of the first cylindrical body 2 and the second cylindrical body 7, respectively, at least one of the bellows portions 4 and 9 is used for the agricultural product W. The surface can be brought into good contact with the surface. As a result, regardless of the state of storage of the agricultural product W in the storage recess 10a of the tray 10, the agricultural product W that cannot be absorbed by the first cylindrical body 2 can be absorbed by the second cylindrical body 7, and the suction holder By means of 1, the agricultural product W can be reliably absorbed and held. As a result, the work efficiency of the boxing work of agricultural products W has been greatly improved, for example, there is no need to interrupt the boxing work by a boxing robot arranged on the sorting line or to manually replenish the suction error portion by a supervisor. It is possible to do.

In addition, a negative pressure supply port 3 capable of generating a negative pressure in the suction holding body 1 is provided on the upper surface of the first cylindrical body 2, and the negative pressure state in the second cylindrical body 7 is set to the first cylindrical state. Since the suction is performed through the gap K formed between the body 2 and the agricultural product W, the second cylinder 7 can be adsorbed only by making the inside of the first cylinder 2 a negative pressure. can do. As a result, it is not necessary to simultaneously suction the first cylinder 2 and the second cylinder 7, and the number of the negative pressure supply pipes 6 and the negative pressure supply ports 3 can be minimized. The configuration of the supply mechanism can be simplified.

Further, since the second cylinder 7 is configured to be detachable from the first cylinder 2, a plurality of second cylinders 7 having different inner diameters R3 and outer diameters R4 are prepared in advance. By doing so, the second cylinders 7 of various sizes can be selectively used according to the size, form, etc. of the agricultural product W, and the second cylinders 7 can be removed to remove the first cylinders. 2 alone can be used, and the adsorption holder 1 excellent in versatility can be obtained.

Further, since the suction holding member 1 is formed simply by fitting and attaching the second cylinder 7 to the projection 6 provided on the upper outer peripheral surface of the first cylinder 2, it has been conventionally used. The suction holding body 1 can be configured by slightly modifying the mold and the like of the first cylindrical body 2 and forming the second cylindrical body 7, and the manufacturing cost of the suction holding body 1 can be reduced. It becomes possible to do.

In the above embodiment, the bellows portions 4 and 9 of the first cylinder 2 and the second cylinder 7 are formed in substantially the same shape, and the contact pressure on the agricultural product W is substantially the same. However, the present invention is not limited to this. For example, as shown in FIGS. 5A to 5D, the shape of the bellows portion 9 of the second cylindrical body 7 is changed to the first cylindrical shape. The shape of the bellows portion 4 of the body 2 may be different.

That is, the second cylinder 7 shown in FIG.
Of the bellows portion 9 of the first cylindrical body 2 (or less) than the number of the bellows portion 4 of the first cylindrical body 2
The position of "a" is made substantially coincident with the lower edge 4a. The bellows portion 9 of the second cylinder 7 shown in FIG.
The number (shape) of the peaks and valleys of the bellows portion 4 of the cylindrical body 2 is made different, and the position of the lower end edge 9a is set to a predetermined dimension h1 from the position of the lower end edge 4a of the bellows portion 4 of the first cylindrical body 2. It is located below, and can be preferably applied particularly to agricultural products W whose outer shape is almost spherical.

The bellows 9 of the second cylinder 7 shown in FIG. 5 (c) has a lower edge 9a formed by increasing the number of peaks (valleys). 4 is located below the lower edge 4a by a predetermined dimension h2. Further, FIG.
The bellows portion 9 of the second cylindrical body 7 shown in (d) has a thickness t1.
Is set larger (or smaller) with respect to the thickness t2 of the bellows portion 4 of the first cylindrical body 2.

With such a configuration, the elastic force of the bellows portion 4 of the first cylindrical body 2 and the bellows portion 9 of the second cylindrical body 7 can be made different from each other. The contact pressure (adhesion) of the second cylinder 7 to the agricultural product W can be made different. As a result, for example, by increasing (strengthening) the elastic force of the second cylinder 7, the outer peripheral side of the agricultural product W can be firmly adsorbed, and when the agricultural product W is adsorbed and held and transferred, Lateral run-out of the agricultural product W can be reduced. In addition, by increasing (strengthening) the elastic force of the first cylinder 2, the first cylinder 2 can be hardly crushed in the inward direction when the agricultural product W is sucked and held. As described above, the predetermined elasticity of the bellows portion 4 of the first cylindrical body 2 and the bellows portion 9 of the second cylindrical body 7 makes it possible to surely hold the predetermined positions of the various agricultural products W with the optimum suction force. Will be possible.

Further, in the above embodiment, the case where a plurality of cylinders are formed on the suction holding member 1 by providing the second cylinder with an interval w outside the first cylinder is described. However, by providing two or more cylinders outside the first cylinder, or by appropriately setting the interval w, it can be configured to be able to correspond to agricultural products W of various sizes and forms. .

Further, in the above embodiment, an annular projection 6 is provided on the upper outer peripheral surface of the first cylindrical body 2 and an annular fitting recess 8 is provided on the upper inner surface of the second cylindrical body 7. hand,
By fitting the fitting recess 8 to the projection 6, the first
The second cylindrical body 7 is attached to the cylindrical body 2 in a close contact state. For example, a screw portion is formed on the close contact surface of the two cylindrical bodies 2 and 7, and the second cylindrical body 7 is attached to the first cylindrical body 2. Other appropriate attachment / detachment mechanisms such as attachment / detachment while rotating may be adopted.

In the above embodiment, the case where the first cylinder 2 and the second cylinder 7 are circular in cross section has been described. Can also be set. Further, in the above embodiment, an apple was described as an example of an agricultural product. However, as the agricultural product according to the present invention, spherical agricultural products such as tomato, persimmon, pear, melon, and watermelon, and long products such as cucumber, melon, and eggplant. It can also be used for adsorption and retention of agricultural products.

Further, in the above embodiment, the overall shape of the first cylindrical body 2 and the second cylindrical body 7, the shapes of the bellows 4, 9 and the size and position of the negative pressure supply port 3 are also examples. Needless to say, various changes can be made without departing from the spirit of the present invention.

[0046]

As described above in detail, according to the first aspect of the present invention, since a plurality of cylinders are provided, the innermost cylinder can adsorb and hold agricultural products. ,
Even if the entire lower edge of the innermost cylinder does not contact the surface of the agricultural product, the entire lower edge of the outer cylinder can be brought into contact with the surface of the agricultural product. By setting the inside of the body to a negative pressure, various agricultural products can be reliably absorbed and held, for example, agricultural products can be absorbed by the outer cylinder.

According to the second aspect of the present invention, the first
Since the lower body of the cylindrical body and the lower part of the second cylindrical body are formed in a bellows-type structure, the bellows part expands and contracts, and easily contacts well, for example, the uneven shape of the surface of the agricultural product. Agricultural products can be more reliably adsorbed and held by one of the cylinders.

Further, according to the third aspect of the present invention, since the negative pressure supply port capable of generating a negative pressure in the cylinder is formed at the upper part of the innermost cylinder of the plurality of cylinders, When the entire lower end of the innermost cylinder comes into contact with the surface of the agricultural product, the agricultural product can be reliably absorbed and held without the action of the outer cylinder, and the negative pressure supply mechanism is simplified. Can be.

According to the fourth aspect of the present invention, the innermost cylinder and the outer cylinder of the plurality of cylinders are set to have different contact pressures on the surface of the agricultural product. Therefore, one of the plurality of cylinders can be brought into contact with a predetermined position on the surface of the agricultural product with optimal contact, and various agricultural products can be more reliably adsorbed and held.

According to the fifth aspect of the present invention, other than the innermost one of the plurality of cylinders, the other cylinder is detachably provided on the inner cylinder. Therefore, for example, by setting the size of the outer cylinder in various ways, it is possible to cope with the adsorption and holding of agricultural products of various sizes, and by removing the outer cylinder, for example, even one cylinder has an adsorption error. It has the effect of being able to cope with agricultural products with a small amount of water and obtaining an adsorption holding body with excellent versatility.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of an agricultural product adsorption holding body according to the present invention.

FIG. 2 is a sectional view showing the operating state of the same.

FIG. 3 is a cross-sectional view showing another operation state;

FIG. 4 is a sectional view showing still another operating state;

FIG. 5 is a sectional view showing various modifications of the bellows portion.

FIG. 6 is a sectional view showing a conventional suction holding member.

FIG. 7 is a sectional view showing another conventional suction holding member.

FIG. 8 is a sectional view showing an operation state of a conventional suction holding body.

FIG. 9 is a sectional view showing another operation state of the conventional suction holding body.

[Explanation of symbols]

 1... Suction holding body 2... First cylindrical body 3... Negative pressure supply port 4... Bellows part 4 a. · Negative pressure supply pipe 6 ····· Projection 7 ····································· Fitting recess 9 ··················・ ・ Tray 10a ・ ・ ・ Container recess W ・ ・ ・ ・ ・ ・ ・ Agricultural products H ・ ・ ・

Claims (5)

[Claims] 1. A suction holding body having an elastic cylinder at least at a lower end thereof, wherein an agricultural product is adsorbed and held at a lower end of the cylinder by supplying a negative pressure to the cylinder, wherein the cylinder has a concentric circle of a different diameter. An agricultural product adsorption holding body comprising a plurality of cylindrical bodies formed in a shape. 2. The cylindrical body according to claim 1, wherein at least a lower end portion thereof is formed in a bellows type structure.
An adsorbent for the agricultural product according to the above. 3. A negative pressure supply port capable of generating a negative pressure in the cylinder,
The agricultural product adsorption holding body according to claim 1 or 2, wherein the agricultural product adsorption holding body is formed at an upper portion of an innermost one of the plurality of cylinders. 4. The method according to claim 1, wherein the innermost cylinder and the outer cylinder of the plurality of cylinders have different contact pressures on the surface of the agricultural product. 4. The adsorption support for agricultural products according to any one of 1 to 3. 5. A cylinder body other than the innermost cylinder body of the plurality of cylinder bodies is detachably provided on the inner cylinder body. 5. The adsorptive holding body for agricultural products according to any one of items 4 to 4.