A multi-purpose vacuum suction device and its optimization design method

Abstract

The present invention discloses a multi-purpose vacuum suction mouth device and an optimization design method, which relates to the technical field of vacuum suction mouths, and solves the problem that the existing vacuum suction mouths have a single function and low reliability. The key points of the technical solution are: it includes a suction mouth body and a pseudo-shaped sealing ring, and the suction mouth body is coaxially provided with a conical suction mouth, a flat suction mouth, and a spherical suction mouth with successively increasing diameters; the suction mouth body is a hard body, and the pseudo-shaped sealing ring is a soft body, and the pseudo-shaped sealing ring is sleeved with the suction mouth body. The present invention broadens the suction mouth diameter range of the vacuum suction mouth for sucking external spherical objects, increases the effective suction weight of the vacuum suction mouth, expands the use range of the vacuum suction mouth, reduces the weight of the vacuum suction mouth itself, and reflects the lightweight design requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum suction devices, and more particularly to a multi-purpose vacuum suction device and an optimization design method thereof. Background Art

[0002] The principle of vacuum suction is to use the force formed by the pressure difference between the vacuum system and the atmosphere to grasp and move objects. This method of using pressure difference to fix or move objects has many applications in daily life. Vacuum suction devices are widely used in construction, papermaking, printing, glass industry, robotics and other industries.

[0003] At present, there are related documents that disclose a multi-purpose vacuum suction device based on a swingable suction cup, such as Figure 1 As shown, a swingable suction cup composed of a suction cup and an angle adjuster is constructed, and different spherical objects can be sucked through its angle adjuster. The structure adopts the combination of multiple suction cups to achieve the purpose of multi-purpose. The suction force generated by this structure is related to the number of suction cups and the size of the suction port. The more suction cups there are and the larger the suction port size, the greater the suction force. However, the effective suction cross-section utilization rate of the structure is limited, resulting in a certain degree of limitation in the weight range of objects that the structure can provide for suction; the structure adopts a combination of multiple soft suction cups, and the suction cups are greatly deformed during use; the suction cup swing angle range is only ±15° and the adjustment accuracy is difficult to guarantee synchronously; and the more suction cups there are, the lower the reliability.

[0004] Therefore, how to research and design a multi-purpose vacuum suction device and optimize the design method is a problem that we urgently need to solve. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide a multi-purpose vacuum suction device and an optimization design method, which can be used for the suction, lifting, transportation, clamping and fixing of products with outer spherical surfaces, inner spherical surfaces, planes and curved surfaces.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] In the first aspect, a multi-purpose vacuum suction nozzle device is provided, comprising a suction nozzle body and a contoured sealing ring, wherein the suction nozzle body is coaxially provided with a conical suction nozzle, a flat suction nozzle, and a spherical suction nozzle with successively increasing diameters; the suction nozzle body is a hard body, and the contoured sealing ring is a soft body, and the contoured sealing ring is sleeved on the suction nozzle body.

[0008] Furthermore, the conical suction port and the spherical suction port are located on the same side of the plane suction port.

[0009] Furthermore, the inner wall of the absorber body is provided with an inner pressure ring in contact with the inner edge of the pseudo-shaped sealing ring, and the outer wall of the absorber body is provided with an outer pressure ring in contact with the outer edge of the pseudo-shaped sealing ring. Both the inner pressure ring and the outer pressure ring are connected to the absorber body by fixing screws.

[0010] Furthermore, a plurality of groups of inner cavity parts are arranged in the contoured sealing ring, and each group of inner cavity parts is composed of a pressurized air cavity, a vacuum cavity, a buffer airbag and at least one deformable air cavity; the buffer airbag is arranged in the vacuum cavity, and the outer edge of the port of the buffer airbag is sealed and connected with the port of the vacuum cavity; the pressurized air cavity, the buffer airbag and the deformable air cavity are arranged to be interconnected; the pressurized air cavity is located on the side of the deformable air cavity toward the outside of the contoured sealing ring, and the buffer airbag and the vacuum cavity are located on the side of the deformable air cavity toward the inside of the contoured sealing ring.

[0011] Furthermore, the inner wall of the vacuum chamber is provided with a hard protective layer.

[0012] Furthermore, the port of the deformed air cavity is provided with a back-inhalation nozzle to prevent back-inhalation.

[0013] Furthermore, the thickness of the pseudo-shaped sealing ring is 2-5 cm.

[0014] Furthermore, the absorber body has a stiffness of not less than 50 N / μm and a material density of not more than 2.75 g / cm under an axial force of 1000 N. 3 Made of hard material.

[0015] Furthermore, the pseudo-shaped sealing ring is made of vulcanized rubber or nitrile rubber through integral molding of a mold.

[0016] In a second aspect, there is provided a method for optimizing the design of a multi-purpose vacuum suction nozzle device as described in any one of the first aspects, comprising the following steps:

[0017] S101: Determine the suction port radius R according to the weight G of the object to be sucked and the safety factor value n, and obtain multiple suction port radii, among which the maximum radius is R max , the minimum radius is R min ;

[0018] S102: Arrange multiple suction port radii longitudinally to obtain a right-angle trapezoidal distribution that can accommodate all suction port radii;

[0019] S103: Take the area of ​​the right-angled trapezoid as the minimum value S min When the trapezoidal hypotenuse is used as the envelope line L i A conical suction opening in the extractor body is designed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention adopts a combined suction port structure to replace the traditional disc-shaped suction port structure, which can complete the vacuum suction of outer spherical surface, inner spherical surface, flat surface and curved surface objects, achieving the purpose of multi-purpose and universality;

[0022] 2. The present invention designs multiple groups of inner cavity parts in the simulated sealing ring, so that when the vacuum absorber absorbs an object, the contact part can be quickly sunken, and the parts on both sides of the sunken part are raised, which can effectively reduce the leakage rate and increase the weight of the object that can be absorbed by the vacuum absorber;

[0023] 3. The present invention adopts an optimized design method. On the one hand, it broadens the suction port diameter range of the vacuum absorber for absorbing external spherical objects, improves the effective suction weight of the vacuum absorber, and expands the use range of the vacuum absorber. On the other hand, it reduces the weight of the vacuum absorber itself, reflecting the lightweight design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0025] Figure 1 It is a structural schematic diagram of a multi-purpose vacuum extractor in the prior art;

[0026] Figure 2 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 3 Schematic diagram of the working state of the conical suction port in an embodiment of the present invention;

[0028] Figure 4 Schematic diagram of the working state of the flat suction port in an embodiment of the present invention;

[0029] Figure 5 Schematic diagram of the working state of the spherical suction port in an embodiment of the present invention;

[0030] Figure 6 Schematic diagram of the internal structure of the pseudo-shaped sealing ring in an embodiment of the present invention;

[0031] Figure 7 It is a schematic diagram of the design process of the absorber body in the embodiment of the present invention.

[0032] Marks and corresponding parts names in the attached drawings:

[0033] 101. suction device body; 102. conical suction port; 103. plane suction port; 104. spherical suction port; 105. inner pressure ring; 106. outer pressure ring; 201. pseudo-shaped sealing ring; 202. pressurized air cavity; 203. deformed air cavity; 204. reverse suction nozzle; 205. vacuum cavity; 206. cushioning air bag. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the following is a summary of the present invention with reference to the embodiments and the accompanying drawings. Figure 2-7 , the present invention is further described in detail. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0035] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0036] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Embodiment 1: A multi-purpose vacuum suction device, such as Figure 2 As shown, it includes an extractor body 101 and a pseudo-shaped sealing ring 201. The extractor body 101 is coaxially provided with a conical suction port 102, a plane suction port 103, and a spherical suction port 104 with increasing diameters in sequence; the extractor body 101 is a hard body, and the pseudo-shaped sealing ring 201 is a soft body, and the pseudo-shaped sealing ring 201 is sleeved with the extractor body 101. The extractor body 101 constructed by the conical suction port 102, the plane suction port 103, and the spherical suction port 104 is in an "eight" shape.

[0039] like Figure 3-5As shown, when sucking an outer spherical object, the functional part of the suction port structure is the conical suction port 102. The sucked object is at the bottom, the vacuum sucker is at the top, the central axis of the vacuum sucker is aligned with the center line of the outer spherical surface of the object, and the conical suction port 102 is directly opposite to the top of the sphere of the sucked object; in this state, the vacuum sucker is in contact with the spherical surface of the sucked object, and the pseudo-shaped sealing ring 201 is kept in full fit with the spherical surface of the sucked object; the vacuum valve is opened to evacuate air, and the conical surface of the pseudo-shaped sealing ring 201 is compressed by the pressure difference inside and outside the suction chamber of the vacuum sucker to achieve a sealing effect; when the vacuum indication number reaches the requirement, the vacuum suction is completed, and the conditions for hoisting, transportation, clamping, etc. are met. Similarly, when sucking a flat object, the functional part of the suction port structure is the flat suction port 103; when sucking an inner spherical object, the functional part of the suction port structure is the spherical suction port 104.

[0040] In this embodiment, the conical suction port 102 and the spherical suction port 104 are located on the same side of the plane suction port 103 .

[0041] like Figure 2 As shown, the inner wall of the extractor body 101 is provided with an inner pressure ring 105 in contact with the inner edge of the pseudo-shaped sealing ring 201, and the outer wall of the extractor body 101 is provided with an outer pressure ring 106 in contact with the outer edge of the pseudo-shaped sealing ring 201, and the inner pressure ring 105 and the outer pressure ring 106 are connected to the extractor body 101 by fixing screws. The inner pressure ring 105 and the outer pressure ring 106 are both metal rings.

[0042] In this embodiment, the thickness of the pseudo-shaped sealing ring 201 is 2-5 cm and has a certain elasticity.

[0043] In this embodiment, the absorber body 101 is made of a hard material with a stiffness of not less than 50 N / μm and a material density of not more than 2.75 g / cm3 under an axial force of 1000 N.

[0044] In this embodiment, the contoured sealing ring 201 is made of vulcanized rubber or nitrile rubber through integral molding of a mold, and needs to ensure the sealing of the contact surface between the sucked object and the vacuum sucker, and the overall leakage rate is not greater than 10-5Pa.m3 / s.

[0045] Embodiment 2: A multi-purpose vacuum suction device. Embodiment 2 is different from Embodiment 1 in that: Figure 6As shown, multiple groups of inner cavity parts are arranged in the anthropomorphic sealing ring 201, and each group of inner cavity parts is composed of a pressurized air cavity 202, a vacuum cavity 205, a buffer air bag 206, and two symmetrically arranged deformed air cavities 203. The buffer air bag 206 is arranged in the vacuum cavity 205, and the outer edge of the port of the buffer air bag 206 is sealed and connected with the port of the vacuum cavity 205; the pressurized air cavity 202, the buffer air bag 206, and the deformed air cavity 203 are arranged in communication with each other; the pressurized air cavity 202 is located on the side of the deformed air cavity 203 facing the outside of the anthropomorphic sealing ring 201, and the buffer air bag 206 and the vacuum cavity 205 are located on the side of the deformed air cavity 203 facing the inside of the anthropomorphic sealing ring 201.

[0046] In this embodiment, a hard protective layer is provided on the inner wall of the vacuum chamber 205 .

[0047] In this embodiment, the port of the deformed air cavity 203 is provided with a back-inhalation-preventing back-inhalation nozzle 204. The short diameter port of the back-inhalation nozzle 204 is arranged toward the inside of the deformed air cavity 203.

[0048] When the vacuum suction device sucks an object, the object contacts the inner side of the pseudo-shaped sealing ring 201, so that the pressurized air cavity 202 is compressed and the internal gas is transported to the buffer air bag 206. After part of the gas is transported to the buffer air bag 206 to reach saturation, part of the gas passes through the reverse suction nozzle 204 and enters the deformed air cavity 203, so that the contact point between the object and the pseudo-shaped sealing ring 201 can be quickly concave, and the two sides of the contact point can be raised to a certain extent, thereby enhancing the contact sealing between the object and the pseudo-shaped sealing ring 201. The reverse suction nozzle 204 can ensure the order in which the gas in the pressurized air cavity 202, the buffer air bag 206, and the deformed air cavity 203 flows.

[0049] Embodiment 3: A method for optimizing the design of a multi-purpose vacuum suction device, such as Figure 7 As shown, the following steps are included:

[0050] S101: determining a suction port radius R according to a weight G of the sucked object and a safety factor value n, and obtaining a plurality of suction port radii, wherein a maximum radius is Rmax and a minimum radius is Rmin;

[0051] S102: Arrange multiple suction port radii longitudinally to obtain a right-angle trapezoidal distribution that can accommodate all suction port radii;

[0052] S103: When the area of ​​the right-angled trapezoid is the minimum value Smin, the tapered suction port 102 in the suction device body 101 is designed using the hypotenuse of the trapezoid as the envelope line Li.

[0053] For example, in this embodiment, the right-angled trapezoidal area of ​​the fourth design is the smallest, so the envelope line L4 is selected to design the conical suction port 102 in the suction device body 101 .

[0054] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-purpose vacuum suction device, characterized in that: The invention comprises an extractor body (101) and a pseudo-shaped sealing ring (201); the extractor body (101) is coaxially provided with a conical suction port (102), a plane suction port (103), and a spherical suction port (104) whose diameters increase in sequence; the extractor body (101) is a hard body, the pseudo-shaped sealing ring (201) is a soft body, and the pseudo-shaped sealing ring (201) is sleeved with the extractor body (101); The anthropomorphic sealing ring (201) is provided with a plurality of groups of inner cavity parts, each group of inner cavity parts is composed of a pressurized air cavity (202), a vacuum cavity (205), a buffer air bag (206) and at least one deformable air cavity (203); the buffer air bag (206) is arranged in the vacuum cavity (205), and the outer edge of the port of the buffer air bag (206) is sealed and connected to the port of the vacuum cavity (205); the pressurized air cavity (202), the buffer air bag (206) and the deformable air cavity (203) are arranged to be interconnected; the pressurized air cavity (202) is located on the side of the deformable air cavity (203) facing the outer surface of the anthropomorphic sealing ring (201) not in contact with the absorber body (101), and the buffer air bag (206) and the vacuum cavity (205) are located on the side of the deformable air cavity (203) facing the inner surface of the anthropomorphic sealing ring (201) in contact with the absorber body (101).

2. A multi-purpose vacuum suction device according to claim 1, characterized in that: The conical suction port (102) and the spherical suction port (104) are located on the same side of the plane suction port (103).

3. The multi-purpose vacuum suction device according to claim 1, characterized in that: The inner wall of the absorber body (101) is provided with an inner pressure ring (105) in contact with the inner edge of the pseudo-shaped sealing ring (201), and the outer wall of the absorber body (101) is provided with an outer pressure ring (106) in contact with the outer edge of the pseudo-shaped sealing ring (201), and both the inner pressure ring (105) and the outer pressure ring (106) are connected to the absorber body (101) via fixing screws.

4. The multi-purpose vacuum suction device according to claim 1, characterized in that: The inner wall of the vacuum chamber (205) is provided with a hard protective layer.

5. The multi-purpose vacuum suction device according to claim 1, characterized in that: The port of the deformed air cavity (203) is provided with a back-inhalation-preventing back-inhalation nozzle (204).

6. A multi-purpose vacuum suction nozzle device according to any one of claims 1 to 5, characterized in that: The thickness of the pseudo-shaped sealing ring (201) is 2-5 cm.

7. A multi-purpose vacuum suction device according to any one of claims 1 to 5, characterized in that: The absorber body (101) is made of a hard material with a stiffness of not less than 50 N / μm and a material density of not more than 2.75 g / cm3 under an axial force of 1000 N.

8. A multi-purpose vacuum suction nozzle device according to any one of claims 1 to 5, characterized in that: The pseudo-shaped sealing ring (201) is made of vulcanized rubber or nitrile rubber and is produced by integrally molding with a mold.

9. A method for optimizing the design of a multi-purpose vacuum suction nozzle device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S101: determining a suction port radius R according to a weight G of the sucked object and a safety factor value n, and obtaining a plurality of suction port radii, wherein a maximum radius is Rmax and a minimum radius is Rmin; S102: Arrange multiple suction port radii longitudinally to obtain a right-angle trapezoidal distribution that can accommodate all suction port radii; S103: When the area of ​​the right-angled trapezoid is the minimum value Smin, the hypotenuse of the trapezoid is used as the envelope line Li to design the conical suction port (102) in the suction device body (101).

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