JP2021171852A - Suction tool - Google Patents

Abstract

To provide a suction tool capable of properly sucking to an object.SOLUTION: A suction tool 1A includes a suction pad 10 overhanging in a bowl shape from a body part 20 and a plurality of projection parts 13 being of a polygonal pillar shape and projecting from a suction surface 11. The suction pad 10 makes the suction surface 11 suck a workpiece W in an opposing manner with action of negative pressure caused by resilient force by pushing a peripheral edge part 12 against the workpiece W such that air between the workpiece W and the peripheral edge part 12 is released. The plurality of projection parts 13 project so that their projection height is smaller than a minimum width of a cross-sectional surface and abut on the workpiece W together with the peripheral edge part 12 when the suction pad 10 sucks the work W.SELECTED DRAWING: Figure 6

Description

The present invention relates to an adsorbent.

Patent Document 1 discloses a vacuum gripping device including a substantially bell-shaped elastic suction tool connected to a negative pressure generating means and capable of sucking on an object. A large number of rod-shaped protrusions that project vertically are provided on the suction surface of the suction tool. When the adsorbent adsorbs to the object, each of the protrusions is applied to the surface of the object and bent, and a part of the side surface of each protrusion comes into contact with the object. In this way, the contact area of the suction tool with respect to the object can be secured and the suction force can be increased.

Japanese Patent No. 39477441

When each of the protrusions of the suction tool is applied to the object and bends, the bending direction may be irregular for each protrusion due to the variation in the direction of the force received from the object. Therefore, there is a concern that the adsorbent may not properly adsorb to the object due to the protrusions overlapping or pressing against each other to generate a repulsive force. Therefore, the present invention provides an adsorbent capable of adsorbing an object more appropriately.

In order to solve the above problems, the adsorbent of the present invention takes the following means.

That is, the adsorbent of the present invention is an adsorbent that adsorbs to an object. The suction tool has a suction pad protruding from the main body in a bowl shape, and a plurality of polygonal prism-shaped protrusions protruding from the suction surface. When the peripheral edge of the suction pad is pressed against the target object, the air between the suction pad and the target object is evacuated, and the suction pad is sucked so that the suction surface faces the target object by the action of negative pressure due to the elastic force. The plurality of protrusions project short so that their protrusion height is smaller than the minimum width of the cross section, and when the suction pad is attracted to the object, it comes into contact with the object together with the peripheral edge portion.

According to the above configuration, each protrusion has a shape that protrudes smaller than the minimum width of the protruding cross section, so that the protrusion does not bend irregularly when it comes into contact with the object. It becomes easy to contact properly. Further, since each protrusion has a polygonal prism shape, the gap between each protrusion can be narrowed over a wide range in the in-plane direction of the suction surface as compared with the case where each protrusion has a cylindrical shape. It becomes. As a result, the surface rigidity of the suction pad is increased and the suction surface is less likely to bend even if it receives a negative pressure, so that the suction force can be further increased. Further, when a force for causing skidding is applied to the adsorbent adsorbed on the object, each protrusion receives the force for causing skidding in a wide range in the in-plane direction. As a result, the adsorbent can be made difficult to shift with respect to the object.

Further, the adsorbent of the present invention may be further configured as follows. The suction tool further projects so as to extend radially from the center of the suction surface, and partitions the suction space between the suction surface and the target into a plurality of spaces that do not communicate with each other when the suction pad adsorbs to the object. Has a wall.

According to the above configuration, the adsorption space is partitioned by the partition wall, so that even if the adsorption of one space is removed, the adsorption of the other space is easily maintained. As a result, the adsorbent can be made more difficult to come off.

Further, the adsorbent of the present invention may be further configured as follows. The peripheral edge portion is provided with an overhanging portion that projects in a cylindrical shape along the peripheral edge portion to form a contact portion with an object. The overhanging portion is configured such that the overhanging height from the suction surface is larger than the protruding height from the suction surface of the protruding portion.

According to the above configuration, even if the suction pad is provided with a protrusion protruding from the suction surface, the peripheral edge portion of the suction pad can be appropriately pressed against the object by the overhanging portion.

Further, the adsorbent of the present invention may be further configured as follows. At the peripheral edge, a groove is formed along the circumferential direction in which the peripheral edge is pressed against the object and slides outward in the radial direction to push out foreign matter adhering to the surface of the object to the outside of the adsorption area of the object. Is formed.

According to the above configuration, when the suction pad is pressed against the object, the groove provided on the peripheral edge can scrape out foreign matter such as oil and dust adhering to the surface of the object. Thereby, the suction force of the suction tool can be further increased.

Further, the adsorbent of the present invention may be further configured as follows. The suction pad has a rising portion having a bowl-shaped rising angle larger than that of the other portion in a part of the circumferential direction.

According to the above configuration, when the surface shape of the object is curved in the direction away from the suction pad, the peripheral portion can be brought closer to the curved portion of the object at an early stage by the rising portion. Therefore, the suction pad can be more appropriately sucked to the object.

Further, the adsorbent of the present invention may be further configured as follows. Each end surface of the plurality of protrusions that abuts on the object is formed with recesses that are recessed in a concave curved surface shape.

According to the above configuration, the recesses allow each protrusion to have a function of adsorbing to an object. Thereby, the suction force of the suction tool can be further increased.

It is the schematic of the suction tool which concerns on 1st Embodiment. It is a perspective view of an adsorbent. It is a side view of the adsorbent. It is a bottom view of a suction tool. FIG. 4 is a sectional view taken along line VV of FIG. It is sectional drawing corresponding to FIG. It is an enlarged view of the VII part of FIG. FIG. 6 is an enlarged view of part VIII of FIG. It is a perspective view of the suction tool which concerns on 2nd Embodiment. It is a bottom view of a suction tool. FIG. 10 is a cross-sectional view taken along the line XI-XI of FIG. FIG. 10 is a cross-sectional view taken along the line XII-XII of FIG. It is a perspective view of the suction tool which concerns on 3rd Embodiment. It is a bottom view of a suction tool. FIG. 14 is a cross-sectional view taken along the line XV-XV of FIG. It is sectional drawing corresponding to FIG. 15 which shows the state which the suction tool adsorbed on the work. It is a perspective view of the suction tool which concerns on 4th Embodiment. It is a bottom view of a suction tool. FIG. 8 is a cross-sectional view taken along the line XIX-XIX of FIG. It is sectional drawing corresponding to FIG. 19 which shows the state which the suction tool adsorbed on the work.

Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. 1-20.

<First Embodiment>
First, the configuration of the adsorbent 1A according to the first embodiment will be described with reference to FIGS. 1-8. As shown in FIG. 1, the suction tool 1A according to the present embodiment picks up the work W (metal panel: corresponding to the “object” of the present invention) transported by the transport device and transfers it to the mold. It is attached to the tip of the manipulator. The suction tool 1A is pressed against the surface of the work W by the operation of the manipulator and is attracted to the surface of the work W.

Then, after the above adsorption, the adsorbent 1A is strongly adsorbed on the surface of the work W by removing the air between the adsorber 1A and the work W by the vacuum pump connected to the manipulator. Then, after the suction, the suction tool 1A is pulled up by the operation of the manipulator to integrally lift the sucked work W. Then, the suction tool 1A releases the suction state of the work W by releasing the evacuated state of the vacuum pump when the work W is moved to the mold by the operation of the manipulator (see FIG. 1).

Hereinafter, the specific configuration of the adsorbent 1A will be described. In the following description, any of FIGS. 1-8 will be referred to as appropriate for reference numerals not shown in the reference drawings. The adsorbent 1A is composed of an injection-molded resin member. Specifically, as shown in FIG. 2-5, the suction tool 1A has a cylindrical main body 20 connected to the manipulator and a suction pad 10 that projects from the lower end of the main body in a bowl shape and sucks on the work W. And have.

The main body 20 has a structure in which a through hole 21 penetrating in the axial direction is formed in the cylinder. The through hole 21 communicates with the internal space of the suction pad 10 projecting in a bowl shape. The through hole 21 is connected so as to communicate with the vacuum pump by connecting the main body 20 to the manipulator. As a result, the vacuum pump is evacuated, so that suction pressure is applied to the internal space of the suction pad 10 through the through hole 21.

As shown in FIGS. 2 and 4, the suction pad 10 has a peripheral edge portion 12 forming an outer peripheral edge of a bowl-shaped projecting tip, and a plurality of protruding portions 13 protruding from a suction surface 11 facing the work W. Have. As shown in FIG. 6, the peripheral edge portion 12 and the protrusion portion 13 come into contact with the work W when the suction pad 10 is attracted to the work W. Due to the contact of the protrusions 13, the suction pad 10 is supported by the protrusions 13 at various points in the in-plane direction of the suction surface 11. As a result, the surface rigidity of the suction pad 10 is increased, and the suction surface 11 is less likely to bend even when subjected to the suction pressure. As a result, the suction pad 10 can be appropriately applied with suction pressure, and the suction force can be further increased.

Hereinafter, the specific configuration of the suction pad 10 will be described. When the peripheral edge portion 12 is pressed against the work W, the peripheral portion 12 slides outward in the radial direction so as to expand the bowl shape of the suction pad 10 along the surface of the work W. By this sliding, the peripheral edge portion 12 is configured to scoop out foreign substances such as oil and metal pieces adhering to the surface of the work W to the outside of the suction region of the work W. As a result, the suction pad 10 can appropriately suck the work W. As shown in FIG. 7, the peripheral edge portion 12 has a groove portion 12c described later, which facilitates scraping out the foreign matter. When the suction pad 10 is sucked on the work W, the peripheral edge portion 12 is configured to come into contact with the work W over the entire circumference thereof. Therefore, the inflow of air into the suction space between the suction surface 11 and the work W is prevented, and the suction of the suction pad 10 is maintained.

As shown in FIG. 4-6, the peripheral edge portion 12 of the suction pad 10 has an annular projecting portion 12a that protrudes in a cylindrical shape along the peripheral edge portion 12 and a work W that further projects from the annular projecting portion 12a in a cylindrical shape. It has an overhanging portion 12b forming an abutting portion of the above. As shown in FIGS. 5 and 7, the tip of the overhanging portion 12b has a U-shape. Therefore, the peripheral edge portion 12 can slide in a state where the U-shape of the overhanging portion 12b is appropriately applied to the work W as the suction pad 10 is expanded by pressing against the work W. As shown in FIGS. 7 and 8, the height of the annular protrusion 12a protruding from the suction surface 11 is substantially the same as the height of each protrusion 13 protruding from the suction surface 11. Further, the overhanging height of the overhanging portion 12b from the suction surface 11 is set to be larger than the protruding height of each protruding portion 13 from the suction surface 11.

As described above, even if each of the protrusions 13 comes into contact with the work W, the peripheral edge portion 12 can be appropriately pressed against the work W by the overhang of the overhanging portion 12b. As shown in FIG. 7, assuming that the protrusion height of the annular protrusion 12a from the suction surface 11 is h, the overhanging portion 12b is provided so as to further project about h / 5 from the annular protrusion 12a. Is the most preferable.

As shown in FIGS. 7 and 8, the peripheral edge portion 12 is further provided with a plurality of groove portions 12c formed over the entire circumference on the overhanging portion 12b. When the peripheral edge portion 12 is pressed against the work W by each groove portion 12c and slides outward in the radial direction, the foreign matter such as oil or metal pieces is more efficiently scraped out of the suction region of the work W. Can be done.

In each groove portion 12c, when the suction pad 10 starts to be pressed against the work W, the outer peripheral side groove portion 12c1 of each groove portion 12c is applied to the work W. When the suction pad 10 is further pressed against the work W, the outer peripheral side groove portion 12c1 slides on the work W toward the outside in the radial direction to scrape the foreign matter to the outside. Further, as the suction pad 10 is expanded by pressing against the work W, the inner peripheral side groove portion 12c2 is applied to the work W, and the outer foreign matter that could not be scraped out by the outer peripheral side groove portion 12c1 is scraped out to the outside. By providing a plurality of groove portions 12c in this way, it becomes easy to appropriately scrape the foreign matter adhering to the surface of the work W to the outside.

Then, when the suction pad 10 sucks the suction surface 11 so as to face the work W, as shown in FIG. 8, the inner peripheral side groove portion 12c2 comes into contact with the work W, and the outer peripheral side groove portion 12c1 comes from the work W. It is configured to be separated and face outward in the radial direction. Therefore, the foreign matter scraped out by the outer peripheral gutter portion 12c1 is easily discharged to the outside of the adsorption region.

As shown in FIGS. 2 and 4, each of the protrusions 13 has a hexagonal column shape. Specifically, as shown in FIGS. 6 and 7, each protrusion 13 projects obliquely with respect to the suction surface 11 in a direction away from the center, and is a hexagon having a uniform cross section parallel to the suction surface 11. Protrude to form. As shown in FIG. 4, the protrusions 13 are arranged so as to face each other so that the side portions of the cross sections (hexagons) adjacent to each other in the circumferential direction are oriented substantially parallel to each other. Further, the protrusions 13 are arranged so that the side portions of the opposite cross sections (hexagons) of the protrusions 13 that are diagonally adjacent to each other in the radial direction are substantially parallel to each other. As shown in FIG. 4, each protrusion 13 forms a passage A having a predetermined separation width L between them.

As described above, as compared with the case where each protrusion 13 has a cylindrical shape, the gap between the protrusions 13 does not become too wide in some places over a wide range in the in-plane direction of the suction surface 11. It is said to have a narrowed structure. As a result, the suction surface 11 is less likely to bend due to the suction pressure, and the suction force can be further increased. Further, when a force for causing skidding is applied to the suction pad 10 adsorbed on the work W, each protrusion 13 receives the force for causing skidding in a wide range in the in-plane direction. Further, when the corner portion of the contact surface (end surface) of each protrusion 13 that comes into contact with the work W receives the force that causes the skid, a spike effect is generated in which the work W is strongly pressed against the work W. As a result, the suction pad 10 can be made difficult to shift with respect to the work W.

Each protrusion 13 is configured to project short so that its protrusion height is smaller than the minimum width of the cross section. As a result, each of the protrusions 13 does not bend when it comes into contact with the work W, and it becomes easy to appropriately contact the work W. Each protrusion 13 is arranged so that two vertices facing each other in the cross section are arranged radially from the center of the suction surface 11.

As shown in FIG. 4, each protrusion 13 of the suction pad 10 has a configuration in which the area closer to the center of the suction pad 10 is larger in cross-sectional area, and the area is smaller toward the outer peripheral side. Will be done. Each protrusion 13 has each inner peripheral side protrusion 13a, each outer peripheral side large protrusion 13b, each outer peripheral side small protrusion 13c, and each peripheral protrusion 13d so that the area of the cross section is different. Have.

As shown in FIG. 4, each inner peripheral side protrusion 13a has a hexagonal column shape having the largest cross-sectional area, and is arranged in the circumferential direction at a position closest to the center of the suction surface 11 among the protrusions 13. Is placed in. Each outer peripheral side small protrusion 13c has a hexagonal columnar shape having the smallest cross-sectional area, and is located on the outer peripheral side of each inner peripheral side protrusion 13a, and each inner peripheral side protrusion 13a and the suction surface 11 It is provided so as to line up radially from the center of the. Each outer peripheral side large protrusion 13b has a hexagonal column shape having a cross-sectional area next to each inner peripheral side protrusion 13a, and is located between the outer peripheral side small protrusions 13c arranged in the circumferential direction. Provided. That is, each outer peripheral side large protrusion 13b and each outer peripheral side small protrusion 13c are provided so as to be arranged alternately in the circumferential direction. Further, each outer peripheral side large protrusion 13b is positioned so as to be obliquely adjacent to each inner peripheral side protrusion 13a. Each peripheral protrusion 13d has a shape in which each outer peripheral side small protrusion 13c is cut in half in the circumferential direction, and is provided so as to extend from the annular protrusion 12a. Each peripheral protrusion 13d is located on the outer peripheral side of each outer peripheral side large protrusion 13b and each outer peripheral side small protrusion 13c, and is oblique to each outer peripheral side large protrusion 13b and each outer peripheral side small protrusion 13c. It is provided so as to be adjacent to.

With the above configuration, the suction pad 10 secures the strength when it is sucked to the work W by each inner peripheral side protrusion 13a, and is opened along the work W by each outer peripheral side large protrusion 13b and outer peripheral side small protrusion 13c. It is possible to secure flexibility when expanding. Further, the suction force of the suction pad 10 can be further enhanced by narrowing the gap between each outer peripheral side large protrusion 13b and each outer peripheral side small protrusion 13c and the peripheral edge 12 by each peripheral protrusion 13d.

Summarizing the above, the suction tool 1A of the first embodiment has the following configuration. That is, it is an adsorbent (1A) that adsorbs to an object. It is a suction pad (10) that projects from the main body (20) in a bowl shape, and when the peripheral edge (12) is pressed against the object (W), the air between the object (W) and the object (W) is evacuated and the bullet is released. A suction pad (10) that sucks the suction surface (11) facing the object (W) by the action of negative pressure due to the force, and a plurality of polygonal column-shaped protrusions (11) that protrude from the suction surface (11). 13), the protrusion height is smaller than the minimum width of the cross section, and when the suction pad (10) is sucked on the object (W), it is attached to the object (W) together with the peripheral edge portion (12). It has a plurality of protrusions (13) that come into contact with each other.

With such a configuration, each protrusion (13) has a shape that protrudes smaller than the minimum width of the cross section, so that each protrusion (13) comes into contact with the object (W). When this is done, it does not bend irregularly, and it becomes easy to properly contact the object (W). Further, since each protrusion (13) has a polygonal prism shape, the gap between the protrusions (13) is formed as a surface of the suction surface (11) as compared with the case where each protrusion (13) has a cylindrical shape. It can be narrowed over a wide range in the inward direction. As a result, the surface rigidity of the suction pad (10) is increased, and the suction surface (11) is less likely to bend even when subjected to negative pressure, so that the suction force can be further increased. Further, when a force for causing skidding is applied to the adsorbent (1A) adsorbed on the object (W), each protrusion (13) receives the force for causing skidding in a wide range in the in-plane direction. Will be. As a result, the adsorbent (1A) can be made difficult to shift with respect to the object.

Further, the peripheral edge portion (12) is provided with an overhanging portion (12b) that projects along the peripheral edge portion (12) in a cylindrical shape to form a contact portion with the object (W). The overhanging portion (12b) is configured such that the overhanging height from the suction surface (11) is larger than the protruding height from the suction surface (11) of the protruding portion (13).

With such a configuration, even if the suction pad (10) is provided with a protrusion (13) protruding from the suction surface (11), the peripheral edge portion (12) of the suction pad (10) is projected. The overhang of the portion (12b) can be appropriately pressed against the object.

Further, on the peripheral edge portion (12), a foreign substance adhering to the surface of the object object (W) is targeted by the peripheral edge portion (12) being pressed against the object object (W) and sliding outward in the radial direction. A groove portion (12c) that scrapes out the adsorption region of the object (W) is formed along the circumferential direction.

With such a configuration, when the suction pad (10) is pressed against the object (W), the groove portion (12c) provided on the peripheral edge portion (12) is placed on the surface of the object (W). Foreign matter such as attached oil and dust can be scraped out. Thereby, the suction force of the suction tool (1A) can be further increased.

<Second embodiment>
Subsequently, the configuration of the adsorbent 1B according to the second embodiment of the present invention will be described with reference to FIGS. 9-12. In the present embodiment, the suction pad 10 is applied to the curved corner portion of the work W. Therefore, the suction pad 10 is configured to have a rising portion 10A in which the rising angle of the bowl shape is large in a part in the circumferential direction, and a diameter-expanded portion 10B in which the rising angle is smaller than the rising portion 10A. (See FIGS. 11 and 12). This enlarged diameter portion 10B corresponds to the "other portion" of the present invention. As described above, a part of the peripheral edge portion 12 of the suction pad 10 is configured to be closer to the inside in the radial direction. As shown in FIGS. 9 and 10, the peripheral edge portion 12 has an elliptical shape.

As shown in FIG. 11, when the surface shape of the work W is curved in a direction away from the suction pad 10 in the direction in which the rising portion 10A faces each other, the suction pad 10 is more appropriately sucked to the work W. Can be made to. More specifically, as shown in FIGS. 11 and 12, by pressing the peripheral edge portion 12 of the rising portion 10A against the curved shape, the peripheral portion 12 of the enlarged diameter portion 10B is pressed against the work W as compared with the case where the peripheral edge portion 12 of the enlarged diameter portion 10B is pressed. The peripheral edge portion 12 can be pressed earlier. Therefore, the suction pad 10 can be more appropriately sucked to the work W. Since the configurations other than the above are the same as the configurations shown in the first embodiment, the same reference numerals are given and the description thereof will be omitted.

As described above, the suction tool 1B of the second embodiment has the following structure in addition to the structure of the suction tool 1A of the first embodiment. The suction pad (10) has a rising portion (10A) having a bowl-shaped rising angle larger than that of the other portion (10B) in a part thereof in the circumferential direction. With such a configuration, when the surface shape of the object (W) is curved in the direction away from the suction pad (10), the rising portion (10A) targets the peripheral portion (12). It can be approached to the curved part of the object (W) at an early stage. Therefore, the suction pad (10) can be more appropriately adsorbed to the object (W).

<Third embodiment>
Subsequently, the configuration of the adsorbent 1C according to the third embodiment of the present invention will be described with reference to FIGS. 13-16. In the present embodiment, the recesses 13e that are recessed in the shape of a concave curved surface are formed on the end faces of the protrusions 13 that come into contact with the work W (see FIGS. 13-15). With the recesses 13e, when each protrusion 13 comes into contact with the work W, each protrusion 13 can be attracted to the work W (see FIG. 16). As a result, the suction force of the suction pad 10 can be further increased. Since the configurations other than the above are the same as the configurations shown in the first embodiment, the same reference numerals are given and the description thereof will be omitted.

As described above, the suction tool 1C of the third embodiment has the following structure in addition to the structure of the suction tool 1A of the first embodiment. A concave portion (13e) recessed in a concave curved surface shape is formed on each end surface of the plurality of protrusions (13) that abuts on the object (W). With such a configuration, the recesses (13e) allow each protrusion (13) to have a function of adsorbing to the object (W). Thereby, the suction force of the suction tool (1C) can be further increased.

<Fourth Embodiment>
Subsequently, the configuration of the adsorbent 1D according to the fourth embodiment of the present invention will be described with reference to FIGS. 17-20. In the present embodiment, the suction pad 10 further has a partition wall 14 that partitions the suction space between the suction surface 11 and the work W into a plurality of spaces that do not communicate with each other when the suction pad 10 is sucked on the work W. It is said that. As shown in FIGS. 17 and 18, the partition walls 14 project so as to extend radially from the center of the suction surface 11, and six partition walls 14 are provided at equal angular intervals in the circumferential direction. As shown in FIGS. 19 and 20, the protruding height of each partition wall 14 from the suction surface 11 is substantially the same as the protruding height of the overhanging portion 12b from the suction surface 11. Therefore, even if each protrusion 13 comes into contact with the work W, each partition wall 14 can be appropriately pressed against the work W.

Each partition wall 14 is formed so as to face a side portion of a cross section (hexagonal column) of each protrusion 13 in a wide range in the in-plane direction. Each partition wall 14 and each protrusion 13 form a passage A having a predetermined separation width L between them. Each partition wall 14 integrally has each wide portion 14a formed along each inner peripheral side protrusion 13a and each narrow portion 14b formed along each outer peripheral large protrusion 13b. .. Further, each partition wall 14 is configured to be integrally connected to the annular projecting portion 12a of the peripheral edge portion 12, and has an overhanging corner portion 14c that projects angularly from the joint portion. In this way, each partition wall 14 is configured such that the gap between each protrusion 13 and the protrusion 13 is narrowed over a wide range in the in-plane direction of the suction surface 11. Since the configurations other than the above are the same as the configurations shown in the first embodiment, the same reference numerals are given and the description thereof will be omitted.

As described above, the suction tool 1D of the fourth embodiment has the following structure in addition to the structure of the suction tool 1A of the first embodiment. The suction tool (1D) further protrudes so as to extend radially from the center of the suction surface (11), and when the suction pad (10) is sucked on the object (W), the suction surface (11) and the object (11) It has a partition wall (14) that partitions the suction space between the W) and the suction space into a plurality of spaces that do not communicate with each other. With such a configuration, the adsorption space is partitioned by the partition wall, so that even if the adsorption of one space is removed, the adsorption of the other space is easily maintained. As a result, the adsorbent can be made more difficult to come off.

<Other Embodiments>
Although the embodiments of the present invention have been described above using four examples, the present invention can be implemented in various forms other than the above examples.

1. 1. The structure of the adsorbent of the present invention may be a type that is evacuated, or may be a structure that adsorbs to an object by mere pressing without evacuating. In that case, the main body may have no through hole. The object may be a fixed object such as a wall surface instead of a moving object such as a work. Further, the adsorbent may be configured to be connected to a device capable of switching between evacuation and air ejection. In that case, when the suction pad is pressed against the object, the ejected air blows away the foreign matter adhering to the surface of the object, and when the suction pad is sucked, a suction pressure is generated in the internal space of the suction pad. The suction power can be increased.

2. The peripheral edge portion may have a configuration that does not have an annular projecting portion or an overhanging portion that projects in a cylindrical shape along the peripheral edge portion and comes into contact with the object. Even in such a case, by forming the suction pad so as to project long in a bowl shape, the peripheral edge portion can come into contact with the object even if the suction surface is provided with the protrusion. Further, the peripheral edge portion may have a configuration having no groove portion. Even in such a case, the peripheral portion can scrape out the foreign matter adhering to the surface of the object.

3. 3. The groove portion may be provided not on the entire circumference of the peripheral edge portion but on a part in the circumferential direction.

4. The protrusions can be made from polygonal prism shapes other than hexagonal prisms such as triangular prisms, square prisms, and octagonal prisms, as long as the gaps between them can be narrowed in a wider range in the in-plane direction of the suction surface compared to the cylindrical shape. It does not matter if it consists of. Further, if the protrusions have a structure in which the gap between the protrusions can be narrowed over a wide range in the in-plane direction, each side portion of the cross section is not substantially parallel to each other but is angled. It doesn't matter. Further, the protrusions arranged in the radial direction may be arranged so as to be offset from each other in the circumferential direction, or the protrusions arranged in the radial direction may be arranged so as to be arranged radially from the center of the suction surface. You may.

5. The partition wall is configured to partition the suction space between the suction surface and the object into six, but it is a partition wall that extends radially from the center of the suction surface and divides the suction space into a plurality of spaces that do not communicate with each other. If there is, the number of partitioning spaces does not matter. In addition, the partition wall partitions the suction space between the suction pad and the object into a plurality of spaces that do not communicate with each other to make it more difficult for the suction tool to come off, and the suction pad is brought into contact with the object together with the peripheral edge portion. The surface rigidity of the suction pad can be increased to increase the suction force of the suction pad. Therefore, even when the suction pad is not provided with the protrusion, the suction tool can be more appropriately sucked to the object by the partition wall.

Summarizing the above configurations, the adsorbent of the present invention may have the following configurations.

That is, it is an adsorbent that adsorbs to the object, and is a suction pad that projects like a bowl from the main body, and when the peripheral edge is pressed against the object, the air between the object and the object is released and the elasticity is elastic. A suction pad that sucks the suction surface to the object by the action of negative pressure, and a partition wall that protrudes radially from the center of the suction surface, and when the suction pad sticks to the object It may have a partition wall that partitions the suction space between the suction surface and the object into a plurality of spaces that do not communicate with each other.

According to the above configuration, the adsorption space is partitioned by the partition wall, so that even if the adsorption of one space is removed, the adsorption of the other space is easily maintained. As a result, the adsorbent can be made more difficult to come off. Further, by supporting the suction pad by the partition wall in contact with the object, the surface rigidity of the suction pad is increased and the suction surface is less likely to bend even if it receives a negative pressure, so that the suction force can be further increased.

Further, the adsorbent of the present invention may be further configured as follows. The suction tool is a plurality of polygonal column-shaped protrusions protruding from the suction surface, and protrudes so that the protrusion height is smaller than the minimum width of the cross section, and when the suction pad is sucked on the object, the peripheral edge is formed. It has a plurality of protrusions that come into contact with the object together with the portion.

According to the above configuration, each protrusion has a shape that protrudes smaller than the minimum width of the protruding cross section, so that the protrusion does not bend irregularly when it comes into contact with the object. It becomes easy to contact properly. Further, since each protrusion has a polygonal prism shape, the gap between each protrusion can be narrowed over a wide range in the in-plane direction of the suction surface as compared with the case where each protrusion has a cylindrical shape. It becomes. As a result, the surface rigidity of the suction pad is further increased, and the suction force can be further increased. Further, when a force for causing skidding is applied to the adsorbent adsorbed on the object, each protrusion receives the force for causing skidding in a wide range in the in-plane direction. As a result, the adsorbent can be made difficult to shift with respect to the object.

Further, the adsorbent of the present invention may be further configured as follows. The peripheral edge portion is provided with an overhanging portion that projects in a cylindrical shape along the peripheral edge portion to form a contact portion with an object. The overhanging portion is configured such that the overhanging height from the suction surface is larger than the protruding height from the suction surface of the protruding portion.

According to the above configuration, even if the suction pad is provided with a protrusion protruding from the suction surface, the peripheral edge portion of the suction pad can be appropriately pressed against the object by the overhanging portion.

Further, the adsorbent of the present invention may be further configured as follows. At the peripheral edge, a groove is formed along the circumferential direction in which the peripheral edge is pressed against the object and slides outward in the radial direction to push out foreign matter adhering to the surface of the object to the outside of the adsorption area of the object. Is formed.

According to the above configuration, when the suction pad is pressed against the object, the groove provided on the peripheral edge can scrape out foreign matter such as oil and dust adhering to the surface of the object. Thereby, the suction force of the suction tool can be further increased.

Further, the adsorbent of the present invention may be further configured as follows. The suction pad has a rising portion having a bowl-shaped rising angle larger than that of the other portion in a part of the circumferential direction.

According to the above configuration, when the surface shape of the object is curved in the direction away from the suction pad, the peripheral portion can be brought closer to the curved portion of the object at an early stage by the rising portion. Therefore, the suction pad can be more appropriately sucked to the object.

Further, the adsorbent of the present invention may be further configured as follows. Each end surface of the plurality of protrusions that abuts on the object is formed with recesses that are recessed in a concave curved surface shape.

According to the above configuration, the recesses allow each protrusion to have a function of adsorbing to an object. Thereby, the suction force of the suction tool can be further increased.

1A Adsorbent 1B Adsorbent 1C Adsorber 1D Adsorbent 10 Adsorption pad 10A Rising part 10B Diameter enlarged part (other part)
11 Adsorption surface 12 Peripheral part 12a Circular protrusion 12b Overhanging part 12c Groove part 12c1 Outer peripheral side groove part 12c2 Inner peripheral side groove part 13 Protrusion part 13a Inner peripheral side protrusion 13b Outer peripheral side large protrusion 13c Outer peripheral side small protrusion 13d Peripheral protrusion 13e Recess 14 Partition wall 14a Wide part 14b Narrow part 14c Overhanging corner 20 Main body 21 Through hole A Passage L Separation width W Work (object)

Claims (6)

An adsorbent that adsorbs to an object
It is a suction pad that projects from the main body in a bowl shape, and when the peripheral edge is pressed against the object, the air between the object and the object is evacuated and the suction pad is attracted to the object by the action of negative pressure due to the elastic force. The suction pad that sucks the surfaces facing each other,
A plurality of polygonal prism-shaped protrusions protruding from the suction surface, protruding so that the protrusion height is smaller than the minimum width of the cross section, and when the suction pad is sucked on the object, together with the peripheral portion. An adsorbent having the plurality of protrusions that come into contact with the object. The adsorbent according to claim 1.
The suction tool further protrudes so as to extend radially from the center of the suction surface, and does not communicate with each other in the suction space between the suction surface and the object when the suction pad is sucked on the object. An adsorbent with a partition wall that divides into multiple spaces. The adsorbent according to claim 1 or 2.
The peripheral edge portion is provided with an overhanging portion that projects in a cylindrical shape along the peripheral edge portion to form a contact portion with the object.
The overhanging portion is a suction tool having a structure in which the overhanging height from the suction surface is larger than the protruding height of the protruding portion from the suction surface. The adsorbent according to any one of claims 1 to 3.
The peripheral edge portion has a groove portion in which the peripheral edge portion is pressed against the object object and slides outward in the radial direction to scrape foreign matter adhering to the surface of the object object to the outside of the adsorption region of the object object. Is an adsorbent formed along the circumferential direction. The adsorbent according to any one of claims 1 to 4.
The suction pad is a suction tool having a rising portion having a bowl-shaped rising angle larger than that of the other portion in a part of the circumferential direction. The adsorbent according to any one of claims 1 to 5.
An adsorbent in which recesses recessed in a concave curved surface shape are formed on each end surface of the plurality of protrusions in contact with the object.

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