Fixing device and method of use

Abstract

The present invention discloses a fixing device and a using method. The fixing device includes a suction cup and an air release channel. The suction cup is provided with a plurality of main air chambers, and the plurality of main air chambers are deflated through the air release channel. The suction cup is provided with multiple groups of air injection holes, and each of the main air chambers is respectively communicated with a group of air injection holes. The air injection holes are communicated with a gas supply device, and the main air chambers are supplied with gas through the gas supply device. According to the size of the object to be measured, different main air chambers are selected to be supplied with gas. With this solution, in the fixed state, the back surface of the object to be measured will not be largely contacted by the fixing device, and a set of fixing devices can fix objects to be measured of different sizes, and it is possible to flexibly select to inflate all the main air chambers or only some of the main air chambers, avoiding the situation that small-sized objects to be measured are unstablely fixed due to the air flow interference of the peripheral main air chambers.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, in particular to a fixing device and a using method Background Art

[0002] When processing and detecting a to-be-detected object, a fixing device is used to fix the to-be-detected object. Due to the influence of its own material and structure, some to-be-detected objects are expected to have as little contact as possible with the fixing device on the back surface when being fixed and can be stably fixed. In addition, it is expected that a set of fixing devices can be applicable to to-be-detected objects of different sizes Summary of the Invention

[0003] The present invention provides a fixing device, which includes a suction cup and a deflation channel; the suction cup is provided with a plurality of main air cavities, and the plurality of main air cavities are deflated through the deflation channel; the suction cup is provided with multiple groups of air injection holes, each main air cavity is respectively communicated with a group of air injection holes, and the air injection holes are communicated with a gas supply device, and the main air cavity is supplied with gas through the gas supply device

[0004] In an embodiment, the suction cup is provided with multiple groups of support components, and each group of support components is respectively installed at different positions of the suction cup to respectively support the edge area of to-be-adsorbed objects of different sizes or different areas of the same to-be-adsorbed object

[0005] In an embodiment, the deflation channel is a gap L formed between the suction cup and the to-be-detected object and / or a deflation hole provided on the suction cup

[0006] In an embodiment, the suction cup has a bottom wall portion and a plurality of main wall portions protruding from the top surface of the bottom wall portion, and the main air cavity is surrounded by the top surface of the bottom wall portion and the side wall surface of the main wall portion; the main wall portion isolates adjacent main air cavities

[0007] In an embodiment, the air inlet hole of the air injection hole is arranged on the inner side wall surface of the main wall portion or the top surface of the bottom wall portion; the air outlet hole of the air injection hole is arranged on the outer side surface of the main wall portion or the bottom surface of the bottom wall portion

[0008] In an embodiment, the angle between the air outlet direction of the air injection hole and the inner peripheral tangent of the main wall portion is zero or an acute angle

[0009] In an embodiment, the plurality of main air cavities surround the center of the suction cup and are sequentially sleeved from the inside to the outside

[0010] In an embodiment, each group of support components is respectively located on one of the main wall portions or the bottom wall portion in one of the main air cavities

[0011] In an embodiment, the top surfaces of the plurality of main wall portions are all located on the same plane

[0012] In one embodiment, the suction cup is provided with a central air cavity and a central wall portion. The center of the suction cup is located in the central air cavity. The central wall portion protrudes from the top surface of the bottom wall portion. The central air cavity is enclosed by the top surface of the bottom wall portion and the side wall surface of the central wall portion. The suction cup is provided with a set of additional air injection holes, and the additional air injection holes communicate with the central air cavity.

[0013] In one embodiment, the support assembly includes a support member, and the fixing device further includes a driving member. The driving member drives the support member and the suction cup to move relative to each other in a direction perpendicular to the adsorption surface.

[0014] In one embodiment, the driving member is provided with an inner cavity and an air hole communicating with the inner cavity. The air hole is communicated with a gas supply device and an air extraction device. By changing the pressure in the inner cavity through the gas supply device and the air extraction device, the support member is driven to move in a direction perpendicular to the adsorption surface by using the pressure change in the inner cavity.

[0015] In one embodiment, the suction cup is provided with multiple sets of the pressure detection holes, and each main air cavity is respectively communicated with a set of the pressure detection holes.

[0016] In addition, the present invention further provides a usage method, which is implemented based on the above fixing device. The usage method includes the following steps:

[0017] S1. Place the object to be measured on the suction cup of the fixing device;

[0018] S2. Select to supply gas to different main air cavities of the suction cup according to the size of the object to be measured.

[0019] In one embodiment, multiple main air cavities of the suction cup of the fixing device surround the center of the suction cup and are sequentially sleeved from the inside to the outside. S2 is specifically: Select to supply gas to all the main air cavities within the area of the object to be measured according to the size of the object to be measured.

[0020] In one embodiment, the suction cup is provided with multiple sets of pressure detection holes, and each main air cavity is respectively communicated with a set of pressure detection holes. The usage method further includes the following steps:

[0021] S3. Connect a pressure detection device at the pressure detection holes of the suction cup, and detect the internal pressure of the main air cavity through the pressure detection device;

[0022] S4. Adjust the gas supply pressure and / or the distance between the object to be measured and the suction cup according to the detected internal pressure.

[0023] With this solution, when the fixing device fixes the state of the object to be measured, the back side of the object to be measured will not be largely contacted by the fixing device, and it is possible to flexibly choose to inflate all the main air chambers of the fixing device or only some of the main air chambers, avoiding the situation that small-sized objects to be measured are unstable due to the air flow interference of the peripheral main air chambers. Moreover, a set of fixing devices can fix objects to be measured of different sizes. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of an embodiment of the fixing device provided by the present invention;

[0025] Figure 2 It is a three-dimensional view of the assembled state of the suction cup, the support member and the driving member;

[0026] Figure 3 It is Figure 2 view A-A of

[0027] Figure 4 It is Figure 2 top view of

[0028] The description of the reference numerals is as follows:

[0029] 01 Object to be measured, 011 Outline of object to be measured with size A, 012 Outline of object to be measured with size B

[0030] 1 Suction cup, 11 Main air chamber, 11a Central air chamber, 12 Pressure detection hole, 13 Air injection hole, 13a Additional air injection hole, 14 Bottom wall part, 15 Main wall part, 15a Central wall part;

[0031] 2 Support member, 3 Driving member, 4 Pressure detection device, 5 Air supply device, 6 Air extraction device;

[0032] L Gap. Detailed Embodiment

[0033] In order to enable those skilled in the art of the present technology to better understand the technical solution of the present invention, the technical solution of the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0034] As shown in the figure, the fixing device includes a suction cup 1 and multiple sets of support components. In the illustrated solution, two sets of support components are provided. One set contacts and supports the edge area of the object to be measured with size A, and the other set contacts and supports the edge area of the object to be measured with size B and the middle area of the object to be measured 01 with size A. The middle area refers to the area between the central area and the edge area. In the illustrated solution, each set of support components includes three support members 2. Of course, the number of support members 2 in each set of support components is not limited to three, and can be flexibly set according to actual needs.

[0035] The support member 2 is installed on the suction cup 1, and the object to be measured 01 contacts and is supported on the support member 2 under the adsorption action of the suction cup 1. The support member 2 at least partially protrudes from the top surface of the suction cup 1, so that when the object to be measured 01 contacts and is supported on the support assembly, there is a gap L between it and the top surface of the suction cup 1, thus avoiding the large-area contact with the back surface of the object to be measured 01.

[0036] The suction cup 1 is provided with a plurality of main air chambers 11 and a deflation channel. In the illustrated scheme, two main air chambers 11 are provided. The main air chambers 11 deflate through the deflation channel. The deflation channel is located on the back side of the object to be measured 01. When the main air chambers 11 deflate through the deflation channel, a flowing air current can be formed on the back side of the object to be measured 01, resulting in the Bernoulli effect between the back side and the front side of the object to be measured 01. The air pressure on the back side of the object to be measured 01 is less than the air pressure on the front side of the object to be measured 01, so that the suction cup 1 generates an adsorption action on the object to be measured 01. In the illustrated scheme, the top side of the main air chamber 11 communicates with the above-mentioned gap L, and the gas inside the main air chamber 11 leaks out through this gap L, and this gap L forms the above-mentioned deflation channel. Of course, the deflation channel can also be formed by providing deflation holes on the suction cup 1.

[0037] The plurality of main air chambers 11 respectively correspond to different regions of the same object to be measured 01 or support objects to be measured 01 of different sizes. In the illustrated scheme, such as Figure 4 , for the object to be measured of size A (the dotted line indicated by 011 in the figure is the contour line of the object to be measured of size A), both of the two main air chambers 11 correspond to it. That is to say, both of the two main air chambers 11 are within the area of the object to be measured of size A, and when fixing the object to be measured of size A, gas is supplied to both of the two main air chambers 11 at the same time; for the object to be measured of size B (the dotted line indicated by 012 in the figure is the contour line of the object to be measured of size B), only the inner main air chamber 11 corresponds to it. That is to say, only the inner main air chamber 11 is within the area of the object to be measured of size B, and when fixing the object to be measured of size B, gas is supplied only to the inner main air chamber 11.

[0038] The suction cup 1 is provided with multiple groups of pressure detection holes 12 and multiple groups of air injection holes 13.

[0039] The air injection holes 13 are connected to the gas supply device 5, and gas is supplied to the inside of the main air chamber 11 through the gas supply device 5. Each main air chamber 11 is respectively connected to a group of air injection holes 13, so that the gas supply to each main air chamber 11 can be cut off separately, so as to avoid the situation that small-sized objects to be measured are unstable due to the air current interference of the peripheral main air chambers, and the pressure of each main air chamber 11 can be adjusted separately, so that the adsorption forces received by different regions of the object to be measured 01 tend to be consistent, and the object to be measured 01 is prevented from bending and deforming.

[0040] For example, in the illustrated solution, when fixing the object to be measured with dimension B, the gas supply to the outermost main air chamber can be cut off. If the gas supply to the outermost main air chamber is maintained, the gas in the outermost main air chamber will flow to the front side of the object to be measured with dimension B at a relatively high flow rate, resulting in a small pressure difference between the front side and the back side of the object to be measured with dimension B, and thus it may be impossible to fix it stably.

[0041] The pressure measuring holes 12 are connected to the pressure measuring device 4. Each main air chamber 11 is respectively connected to a group of pressure measuring holes 12, so that the internal pressure of each main air chamber 11 can be detected separately, providing a basis for adjusting the pressure of each main air chamber 11. According to the internal pressure of the main air chamber 11, the adsorption force of the suction cup 1 on the object to be measured 01 can be accurately judged, and accordingly, corresponding adjustments can be made (such as adjusting the air supply pressure of the air supply device or adjusting the size of the gap L between the object to be measured and the suction cup), ensuring that the adsorption force is of appropriate magnitude, so as to achieve stable fixation and prevent damage to the object to be measured 01 due to excessive adsorption force.

[0042] A group of pressure measuring holes 12 can be one pressure measuring hole 12 or multiple pressure measuring holes 12. Preferably, the pressure measuring holes 12 in the same group are evenly distributed around the center of the suction cup. A group of air injection holes 13 can be a single air injection hole 13 or multiple air injection holes 13. Preferably, the air injection holes 13 in the same group are evenly distributed around the center of the suction cup.

[0043] The suction cup 1 is provided with a bottom wall portion 14 and a plurality of main wall portions 15 (in the illustrated solution, three main wall portions 15 are provided). The bottom wall portion 14 has a top surface 14a and a bottom surface 14b. The main wall portion 15 protrudes upward from the top surface 14a of the bottom wall portion 14. The main wall portion 15 has a side wall surface, and the side wall surface includes an outer side wall surface 15c and an inner side wall surface 15d. The plurality of main air chambers 11 are jointly enclosed by the side wall surfaces of the plurality of main wall portions 15 and the top surface of the bottom wall portion 14. The main wall portion 15 separates adjacent main air chambers 11.

[0044] The main wall portions 15 are sequentially sleeved from the inside to the outside, and the main air chambers 11 are also sequentially sleeved from the inside to the outside. With such a design, the formed main air chambers 11 surround the center of the suction cup 1, and can generate a uniform adsorption force on the entire circumference of the object to be measured 01, which is beneficial to improving the fixing stability. It should be noted that the main wall portion is not limited to a circular ring shape, and can also be an elliptical ring shape, a square ring shape, etc.

[0045] The top surfaces of the plurality of main wall portions 15 form an adsorption surface, and the top surfaces of the plurality of main wall portions 15 are all located on the same plane, that is to say, the top surfaces of the main wall portions 15 are coplanar. With such a setting, the adsorption force of the suction cup 1 can act on the object to be measured 01 more evenly.

[0046] Each group of support components can be respectively located on one main wall portion 15 or on the bottom wall portion in one main air chamber.

[0047] The pressure detection hole 12 can be provided on the bottom wall portion 14, so that the detected pressure is more accurate.

[0048] The air inlet hole of the air injection hole 13 can be provided on the inner side wall surface 15c of the main wall portion 15 or on the top surface 14a of the bottom wall portion 14. The air outlet hole of the air injection hole 13 can be provided on the outer side wall surface 15d of the main wall portion 15 or on the bottom surface 14b of the bottom wall portion 14.

[0049] The air outlet direction of the air injection hole 13 is preferably at an angle of zero or an acute angle with the inner side wall surface 15c of the main wall portion 15, so that the gas can enter the main air cavity 11 along or substantially along the inner tangent of the main wall portion 15 (as Figure 2 and Figure 3 , the arrow line indicates the air flow direction). In this way, a swirling air flow can be generated in the main air cavity 11, and the adsorption force can act on the object to be measured 01 more evenly.

[0050] The suction cup 1 is also provided with a central air cavity 11a and a central wall portion 15a. The center of the suction cup 1 is located in the central air cavity 11a, and the central air cavity 11a is located inside the main air cavity 11 on the inner side. The central wall portion (15a) protrudes from the top surface of the bottom wall portion 1, and the central air cavity 11a is surrounded by the top surface of the bottom wall portion 14 and the inner side wall surface of the central wall portion 15a. The suction cup 1 is provided with a group of additional air injection holes 13a, and the additional air injection holes 13a communicate with the central air cavity 11a. Specifically, the additional air injection holes 13a can be provided on the central wall portion 13a and can communicate the central air cavity 11a with the adjacent main air cavity 11.

[0051] The support member 2 and the suction cup 1 can move relative to each other in a direction perpendicular to the adsorption surface. The fixing device further includes a driving member 3 for driving the support member 2 and the suction cup 1 to move relative to each other in a direction perpendicular to the adsorption surface, and the driving member 3 is fixed to the suction cup 1. In this way, the distance between the object to be measured 01 and the adsorption surface can be flexibly adjusted to facilitate the adjustment of the adsorption force and the loading and unloading of the object to be measured.

[0052] The driving member 3 can be a pneumatic driving member. Of course, an electric driving member or a mechanical driving member can also be used.

[0053] Specifically, the pneumatic driving member is provided with an inner cavity and air holes, and the air holes communicate with the air supply device and the air extraction device 6. The air supply device supplies air to the inner cavity of the driving member 3 to make the inner cavity of the driving member 3 in a positive pressure state. The air supply device for supplying air to the main air cavity 11 and the air supply device can be the same air supply device. The air extraction device 6 extracts air from the inner cavity of the driving member 3 to make the inner cavity of the driving member 3 in a negative pressure state. At least a part of the support member 2 extends into the inner cavity of the driving member 3, so that it can move with the change of the pressure in the inner cavity of the driving member 3.

[0054] The above has introduced in detail the fixing device and the using method provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A fixing device, characterized in that, the fixing device includes a suction cup (1) and an air release channel; the suction cup (1) is provided with a plurality of main air chambers (11), and the plurality of main air chambers (11) are deflated through the air release channel; the suction cup (1) is provided with multiple groups of air injection holes (13), each main air chamber (11) is respectively communicated with a group of air injection holes (13), and the air injection holes (13) are communicated with a gas supply device (5), and the gas supply device (5) supplies gas to the main air chambers (11); the multiple main air chambers (11) surround the center of the suction cup (1) and are sequentially sleeved from the inside to the outside, so as to inflate all the main air chambers (11) of the fixing device or only inflate some of the main air chambers (11); the suction cup (1) has a bottom wall portion (14) and a plurality of main wall portions (15) protruding from the top surface of the bottom wall portion (14), and the main air chamber (11) is surrounded by the top surface of the bottom wall portion (14) and the side wall surface of the main wall portion (15); the main wall portion (15) isolates adjacent main air chambers (11); the included angle between the air outlet direction of the air injection hole (13) and the tangent line of the inner side wall surface of the main wall portion (15) is zero or an acute angle.

2. The fixing device according to claim 1, characterized in that, the suction cup (1) is provided with multiple groups of support components, and each group of support components are respectively installed at different positions of the suction cup (1) to respectively support the edge regions of objects to be adsorbed (01) with different sizes or different regions of the same object to be adsorbed (01).

3. The fixing device according to claim 1, characterized in that, the air release channel is formed by a gap (L) between the suction cup (1) and the object to be measured and / or an air release hole provided on the suction cup (1).

4. The fixing device according to claim 1, characterized in that, the air inlet hole of the air injection hole (13) is arranged on the inner side wall surface of the main wall portion (15) or the top surface of the bottom wall portion (14); the air outlet hole of the air injection hole (13) is arranged on the outer side wall surface of the main wall portion (15) or the bottom surface of the bottom wall portion (14).

5. The fixing device according to claim 2, characterized in that, each group of support components is respectively located on one of the main wall portions (15) or the bottom wall portion (14) in one of the main air chambers (11).

6. The fixing device according to claim 1, characterized in that, the top surfaces of the multiple main wall portions (15) are all located on the same plane.

7. The fixing device according to claim 1, characterized in that, the suction cup (1) is provided with a central air chamber (11a) and a central wall portion (15a), the center of the suction cup (1) is located in the central air chamber (11a), the central wall portion (15a) protrudes from the top surface of the bottom wall portion (14), and the central air chamber (11a) is surrounded by the top surface of the bottom wall portion (14) and the side wall surface of the central wall portion (15a); the suction cup (1) is provided with a group of additional air injection holes (13a), and the additional air injection holes (13a) are communicated with the central air chamber (11a).

8. The fixing device according to claim 2, characterized in that, The support assembly includes a support member (2), and the fixing device further includes a driving member (3). The driving member (3) drives the support member (2) and the suction cup (1) to move relatively in a direction perpendicular to the adsorption surface.

9. The fixing device according to claim 8, wherein, the driving member (3) is provided with an inner cavity and an air hole communicating with the inner cavity. The air hole is communicated with a gas supply device (5) and an air extraction device (6). By changing the pressure in the inner cavity through the gas supply device (5) and the air extraction device (6), the support member (2) is driven to move in a direction perpendicular to the adsorption surface by using the pressure change in the inner cavity.

10. The fixing device according to any one of claims 1-9, wherein, the suction cup (1) is provided with multiple groups of pressure detection holes (12), and each of the main air cavities (11) is respectively communicated with a group of the pressure detection holes (12).

11. A method for using the fixing device according to any one of claims 1-10, wherein, the method for using includes the following steps: S1. Place the object to be measured on the suction cup of the fixing device; S2. Select different main air cavities of the suction cup to supply gas according to the size of the object to be measured.

12. The method for using according to claim 11, wherein, multiple main air cavities of the suction cup surround the center of the suction cup and are sequentially sleeved from the inside to the outside. S2 is specifically: Select to supply gas to all the main air cavities within the area of the object to be measured according to the size of the object to be measured.

13. The method for using according to claim 11, wherein, the suction cup is provided with multiple groups of pressure detection holes, and each main air cavity is respectively communicated with a group of pressure detection holes. The method for using further includes the following steps: S3. Connect a pressure detection device at the pressure detection holes of the suction cup, and detect the internal pressure of the main air cavity through the pressure detection device; S4. Adjust the gas supply pressure and / or the distance between the object to be measured and the suction cup according to the detected internal pressure.

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