JPH09275891A - Vacuum pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum pad, equipped with a multistage concentric circular lip part in the lower part of a pad base part and capable of surely sucking and fixing a work when a great force is required to suck the work surface, rich in undulations and comprising a rough surface such as the shell of a scallop under a negative pressure and fix and move the work. SOLUTION: This vacuum pad is obtained by installing a multistage concentric circular lip part 12 in the oblique direction from bellowslike undulations 11 provided at the lower end of a pad base part 10, lengthening a lip 13 on the outside from a lip 14 on the inside, supporting the parts with a fixed part 17 for oscillation having a vacuum passage 16 and forming a contact surface, brought into close contact with even complicated curved surfaces having great undulations and many unevennesses and small holes and having a large area. Thereby, opening of a bivalve such as a scallop or a pearl oyster can be carried out without any difficulty.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum pad which attracts a work surface which is rich in undulations and which is a rough surface by a negative pressure, and which requires a large force when fixing or moving the work, and particularly to a scallop shell. The present invention relates to a vacuum pad for adsorbing on a surface.

[0002]

2. Description of the Related Art The mode of the surface of an object to be adsorbed on a vacuum pad can be roughly classified as follows. 1, the surface has irregularities, 2, the surface has many small holes, 3, the surface is formed by a complicated curved surface, 4, the surface forms an inclined surface, for the above-mentioned adsorption target Vacuum pads generally used include those shown in FIGS. 5 (a), 5 (b) and 5 (c). That is, (a) the lip 52 is directly attached to the pad base 50 with a general structure.
Is provided. (B), a flexible lip 52 is provided on the lower part of the pad base 50 corresponding to the suction surface via a bellows-shaped undulation 51 so as to be able to cope with a complicated curved surface or an inclined surface of the suction surface and an uneven surface rich in undulations. It is a thing. In the figure, a pad base 50 is provided with a one-step bellows 51, and a lip 52 is provided at the lower end thereof. (C) A short sponge concentric cylindrical lip 53 made of closed cells is provided on the lower surface of the pad base 50 corresponding to the suction surface so that it can cope with uneven surfaces, scattered rough surfaces such as small holes, inclined surfaces, and curved surfaces. There is. (Since the concentric cylindrical lip is made of a closed-cell sponge, airtightness can be maintained.)

Further, the direction of the acting force of the vacuum pad on the work can be classified as follows. 1a, pull vertically to the suction surface, 2a, pull diagonally to the suction surface, 3a, pull parallel to the suction surface, 4a, pull while rotating the suction surface, for the above 1a-4a Is a so-called swing type, which has a structure in which a ball having an airtight O-ring (O-ring) at the base of the pad allows swinging, and the suction surface can be rotated to accommodate it. It is a thing.

As described above, as shown in FIG.
For the vacuum pad of (c), the above-mentioned 1 to 4
Although it is designed to be able to deal with adsorption objects having a surface that extends over a wide range, it is not able to deal with all types of objects completely. It is necessary to select the size.

By the way, during the work of collecting the scallops from the scallop, there is a step of fixing or opening the scallops using a vacuum pad. In particular, the opening for opening the scallops while maintaining the living function of the scallops. Need work process. In the opening operation step, as shown in FIG. 6, a vacuum pad 61 for fixing the lower shell and a vacuum pad 6 for holding the upper shell and pulling it obliquely upward to open it.
2 are used. That is, the living function of the scallop is paralyzed by heating. Next, as shown in FIG. 6, the lower shell 60a is adsorbed and fixed by a vacuum pad 61, and the upper shell 60b is adsorbed by another vacuum pad 62 from above, and the upper shell 6 is placed above the upper end 63a of the paralyzed scallop.
4 is separated and the hinge 65 is rotated about the hinge to open it.
Then, an opening fitting (not shown) is inserted into the opening to make the opening completely, and then the upper shell 64 is removed from the hinge 65.

By the way, the surface of the scallop shell is shown in FIG.
As shown in, the radial stripes 66 extending radially from the hinge 65
Due to the large unevenness due to and the innumerable random arc undulations 67 formed as the shell grows, an asymmetric curved surface having a complicated rough surface is formed. In the adsorption of the scallop shell surface having such a complex undulation to the adsorption of the shell surface of FIG.
The use of a vacuum pad of the type (c) was considered, but the full effect was not obtained. It should be noted that the radius of curvature of the shell surface differs depending on the size of the shell, and it is necessary to take this into consideration.In addition, as described above, when it is used to open the scallop, it temporarily paralyzes the life function of the scallop and forces excessive force. Needless to say, a large suction force is required for the vacuum pad in order to open it.

[0007]

Therefore, in the invention according to claim 1 of the present invention, a large force is required when the work is fixed or moved by adsorbing the work surface which is rich in undulations and which is a rough surface by negative pressure. In such a case, the purpose is to provide a vacuum pad that can be securely adsorbed and fixed.

In addition to the object of the invention as set forth in claim 1, the invention as set forth in claim 2 provides a vacuum pad which is elastically compressible to the suction surface and is capable of coping with an inclined suction surface. It is intended.

Further, in addition to the object of the invention described in claim 1, the invention described in claim 3 forms the multi-stage concentric lip portion according to claim 1 to form an airtight multi-step contact surface with respect to the surface of the work, and thereby attracting force. It is an object of the present invention to provide a vacuum pad capable of increasing the contact area of the lip portion that generates the heat and ensuring the airtightness more reliably.

Further, according to the invention of claim 4, when a work surface which is rich in undulations and has a rough surface is attracted by negative pressure and a large force is required for fixing or moving the work, the work surface is It is an object of the present invention to provide a vacuum pad capable of more reliably fitting and contacting the lip surface to the work surface on the premise of adsorption, and reliably adsorbing and fixing and maintaining it.

Further, the inventions according to claims 5 and 6 are used for holding bivalve shells such as scallops and pearl oysters, or for opening bivalves, and adsorbing the shell surface by negative pressure to fix or move the shells. Also, it is an object of the present invention to provide a suitable vacuum pad for adsorbing shells, which requires a large force for opening.

[0012]

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention adsorbs a work surface which is rich in undulations and which is a rough surface by negative pressure to fix or move the work. In this case, a vacuum pad that requires a large force is characterized by being composed of a pad base portion and a multi-stage concentric circular lip portion provided below the pad base portion.

Due to the structure of the multi-stage concentric circular lip portion,
The tip of the lip extending in a slightly diagonal direction bites into the uneven portion of the shell surface and sinks at the same time, and the lip portion that comes into airtight contact with the work surface is provided in multiple stages, increasing the lip contact area on the work surface. Increase the degree of familiarity with. Then, the inner lips contact in the same way, which ensures a high airtightness against the work and ensures a reliable suction force for complex surface structures.

The invention according to claim 2 is characterized in that the pad base according to claim 1 is formed in a bellows shape.

The invention according to claim 3 is characterized in that the multistage concentric circular lip portion according to claim 1 is formed by a flexible two-stage concentric flare lip in which the outer lip is longer than the inner lip. It is what

With the structure of the two-stage concentric flare-like lip, the contact state of the lip with the work is constituted by the two-stage contact of the front lip contact and the inner lip contact, and the flare-like lip structure causes the pad base portion to contact. As a tight airtight contact zone is formed on the surface of the work as it is pressed against the work, a sufficient suction force can be secured for the complex surface structure of the work.

According to a fourth aspect of the present invention, in a vacuum pad that requires a large force to fix or move the work, the work surface which is rich in undulations and which is a rough surface is adsorbed by negative pressure, and the bellows-like undulations are used. A pad base having a bottom end and a flexible thin flare lip extending in an oblique direction at the folded portion of the bellows-like relief, and a ring-shaped compressibility filling between the folded portion and the lip. It is characterized in that an elastic member is provided.

With the above structure, when the pad is pressed against the surface of the work to form the contact surface by the flared lip, the flexible thin lip surface bites into the uneven surface from the lip tip even on the work surface with large undulations. At the same time as it is submerged, the ring-shaped compression elastic member provided on the upper portion of the lip elastically presses the lip contact surface to expand the contact area and ensure the contact state.

Further, the invention according to claim 5 is mainly used for holding a scallop or opening the shell, and adsorbs the surface of the shell by a negative pressure, which is great when fixing or moving the shell opening and the shell. In a vacuum shell adsorption shell that requires force, it is composed of a pad base having a bellows-shaped undulation at the lower end, and a multi-stage concentric circular lip extending diagonally in the fold of the undulation. It is characterized by that.

Further, the invention according to claim 6 is mainly used for holding a scallop or opening the shell, and adsorbs the surface of the shell by a negative pressure so as to be large when fixing or moving the shell opening and the shell. In a vacuum pad for shell adsorption that requires force, a pad base having a bellows-shaped undulation at the lower end, and a flexible thin-flare flared lip extending diagonally in the fold of the undulation, It is characterized in that a ring-shaped compressible elastic member is provided between the folded portion and the lip.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
This will be described together with the illustrated example. However, unless otherwise specified, the dimensions, shapes, relative positions, and the like of the components described in this embodiment are not intended to limit the scope of the present invention, but are merely illustrative examples. Absent. FIG.
2 is a cutaway sectional view showing a schematic configuration of an embodiment of a vacuum pad of the present invention, FIG. 2 is a view showing a situation in which the pad of FIG. 1 is downwardly pressed against a work surface to form a contact surface, and FIG. FIG. 4 is a cutaway sectional view showing a schematic configuration of another embodiment of the vacuum pad of the present invention, and FIG. 4 is a view showing a situation in which the pad of FIG. 3 is pressed down against the work surface to form a contact surface.

As shown in FIG. 1, the vacuum pad of the present invention comprises a pad base 10, a bellows-like undulation 11 provided at the lower end thereof, and a two-stage concentric flare shape extending obliquely in the undulation. It is composed of a lip portion 12. The two-stage concentric flared lip portion 12 has an outer lip 13
The outer lip 13 is longer than the inner lip 14. 16 is a vacuum passage, 1
Reference numeral 7 denotes a swinging support fixing portion. As shown in FIG. 2, when the pad is lowered toward the work, the outer lip 13 comes into contact with the work prior to the inner lip 14, and the tip 13a of the outer lip 13 forms a large contact surface in the open state. . Then, the inner lip 14 contacts the surface of the work to form a double contact surface so as to adapt to the unevenness of the surface of the work. The contact area can be increased by increasing the number of flared lips. Further, it is preferable to provide a negative pressure conducting portion (not shown) at the upper root between the lips of each step so that a negative pressure suction force is generated on the lips of each step. or,
The effect of the present invention can be achieved without necessarily providing the negative pressure conducting portion.

In the case of the above construction, for example, as shown in FIG. 7, the scallop has a rough asymmetric curved surface having a large undulation due to the large radial striped undulations 66 and the substantially concentric circular step 67 accompanying the growth of the shell. Although formed, the vacuum pad of the present invention forms a contact surface having a large area for making a complete intimate contact even with such a curved surface. Further, when the scallops shown in FIG. 6 are opened, the upper shell 64a is supported by the vacuum pad 61 while the upper shell 64a is supported by the vacuum pad 62, and the upper end 63a of the scallop 63 which is in a paralyzed state by the vacuum pad 62.
However, since the upper shell 64 makes a circular motion around the hinge 65 as it opens, the vacuum pad 62 may be used under severe conditions, resulting in a large suction force and maintenance force. Required. A sufficiently large contact area is formed even under such usage conditions.

FIG. 3 is a cutaway view showing the schematic construction of another embodiment of the present invention. FIG. 4 shows the pad of FIG.
It is a figure which shows the condition which presses down to 0 and forms a contact surface. As shown in FIG. 3, a pad base 20, a bellows-like undulation 21 provided at a lower end of the base 20, and a flexible thin-flare lip 23 extending obliquely at a tip of a folded portion 21a of the undulation 21. And the folding portion 2
A ring-shaped compression elastic member (made of, for example, a sponge-like member) 24 that fills the space between 1a and the lip is provided. With the above structure, the lip acts on the work surface as follows, as shown in FIG. That is, move the pad to the arrow B
When it is lowered in the direction, the lip 23
Initiate contact at the location. When the lip 23 further descends and reaches the position Y, the lip 23 has a thin structure made of a flexible member and extends flat so that the entire surface thereof tries to contact the work surface 30. On the other hand, the upper portion of the lip 23 and the undulating folding portion 21
Since the ring-shaped compressive elastic member is provided between a, the pressing force p acts on the lip 23 through the elastic deformation of the ring-shaped compressible elastic member 24 and the bellows-like undulations 21 as the pad descends in the B direction. To do. Therefore, by pressing the gap between the work surface and the lip that has not yet contacted, even the asymmetric curved surface consisting of a large undulation and an extremely rough surface found in scallops etc., a tight contact surface on the entire lip surface. To maintain the required suction force.

The vacuum pad of the present invention is preferably made of a wear resistant and water resistant elastic member such as silicone rubber or EPDM.

[0026]

With the above-described structure, the vacuum pad of the present invention requires a large force to form a contact surface having a large area for a complete close contact even with a complicated curved surface having a large undulation and a large number of uneven small holes. For example, it can be used without trouble for opening work of bivalves such as scallops and pearl oysters.

[Brief description of drawings]

FIG. 1 is a broken sectional view showing a schematic configuration of an embodiment of a vacuum pad of the present invention.

FIG. 2 is a schematic view showing a situation in which the pad of FIG. 1 is pressed down on the surface of a work to form a contact surface.

FIG. 3 is a cutaway sectional view showing a schematic configuration of another embodiment of the present invention.

FIG. 4 is a schematic view showing a situation in which the pad of FIG. 3 is pressed down on the work surface to form a contact surface.

FIG. 5 is a partially cutaway view showing a schematic structure of a conventional vacuum pad, (a) showing a general type. (B); Used when the surface configuration of the work is complicated. (C); A sponge with closed cells is used, and is used when the conditions are worse than in (b).

FIG. 6 is a cross-sectional view showing a usage state of a vacuum pad in a scallop shell removing operation.

FIG. 7 is a perspective view showing the state of unevenness and roughness of the surface of the scallop used in the working process shown in FIG.

[Explanation of symbols]

 10, 20 ... Pad base portion 11, 21 ... Bellows-like undulations 12 ... Multi-stage concentric circular lip portion 13 ... Outer lip 14 ... Inner lip 23 ... Flexible thin flare lip 24 ... Ring-shaped compressible elastic member

Claims (6)

[Claims] 1. A vacuum pad that requires a large force when fixing or moving a work by attracting a work surface, which is rich in undulations and has a rough surface, by a negative pressure, and has a multistage concentric circular shape provided on a pad base and a lower part thereof. A vacuum pad characterized by being configured with a lip part. 2. The vacuum pad according to claim 1, wherein a bellows-like undulation is provided on a lower portion of the pad base portion. 3. The vacuum pad according to claim 1, wherein the multi-stage concentric circular lip portion is formed by a flexible two-stage concentric flare lip whose outer lip is longer than the inner lip. 4. A vacuum pad, which requires a large force for fixing or moving a work by adsorbing a work surface, which is rich in undulations and is rough, by negative pressure, and a pad base having a bellows-like undulation at a lower end, A ring-shaped compressible elastic member is provided in the folded portion of the bellows-like undulation, which is composed of a flexible thin-flare lip portion extending in a diagonally widened manner and which fills a space between the folded portion and the lip. A vacuum pad characterized by having a structure. 5. Used for holding or opening a bivalve shell such as a scallop and adsorbing the shell surface by negative pressure,
In a shell adsorption vacuum pad that requires a large force for fixing and moving the shell opening and shell, the base of the pad having a bellows-like undulation at the lower end and the folds of the undulation extend diagonally in a spread manner. A vacuum pad for adsorbing shells, which is characterized by comprising a multi-stage concentric lip portion provided and a lip pad. 6. A shell adsorbent which is mainly used for holding a scallop or opening a shell, which adsorbs the shell surface by negative pressure and requires a large force when fixing or moving the shell opening and shell. In a vacuum pad, a pad base having a bellows-shaped undulation at the lower end and a flexible thin-flare flared lip extending diagonally in the fold of the undulation are formed. A vacuum pad having a structure in which a ring-shaped compressible elastic member that fills a space between the vacuum pad and the gap is provided.