Strengthened clamping mechanism for suction cover plate

Abstract

The air suction cover plate reinforced clamping mechanism is used for workpiece machining and comprises a middle plate and a main plate arranged on the upper surface of the middle plate, a workpiece comprises a body with the lower surface attached to the upper surface of the main plate and side plates formed on the edges of the periphery of the body, and a second through hole is formed in the middle of the rear side area of the body; a second through hole is formed in the upper surface of the main plate, so that a left closed area and a right closed area are formed on the two sides of the second through hole respectively, a cover plate is arranged above the workpiece placed on the upper surface of the main plate, the cover plate further comprises a lower cover plate and an upper cover plate which are stacked, and a gas uniformizing groove is formed in the upper surface of the lower cover plate connected with the upper cover plate in a sealed mode. On the basis that the to-be-machined workpiece is stably positioned, and the conditions of position deviation or cutter vibration and the like in the machining process of the workpiece are avoided, the workpiece pressing stability is improved, the workpiece stress uniformity is improved, and the workpiece machining quality and efficiency are improved.

Description

Technical Field

[0001] The invention relates to an air suction cover plate strengthening clamping mechanism, belonging to the field of electronic product processing. Background Art

[0002] Laptop computers are a commonly used electronic device today. During the processing of laptop computer shells, various holes and slots need to be set on the shells in order to achieve the need to install or connect with the internal parts and components of the laptop computer shells. When using milling technology to process laptop computer shells, it is usually necessary to use special jigs to accurately and stably install the laptop computer shell on the machine tool before specific processing can be carried out.

[0003] The need to open a through hole results in a weak cantilever beam being formed at the side wall with the through hole, resulting in the current fixture for clamping the laptop shell often using a vacuum adsorption method, thereby facilitating the processing of the structure around the shell. However, the following problems still exist: uneven pressure and easy vibration of the knife, which results in vibration marks, white lines and other defects on the highlight edge of the shell, affecting the appearance of the shell and increasing the defective rate of the laptop shell. Summary of the invention

[0004] The purpose of the present invention is to provide an air suction cover plate reinforced clamping mechanism, which can not only adsorb the workpiece itself, but also adsorb the cover plate pressed above the workpiece, and then apply full-surface and uniform pressure to the workpiece through the cover plate to achieve stable positioning of the workpiece to be processed.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an air suction cover plate strengthening clamping mechanism, used for workpiece processing, comprising: a middle plate and a main plate arranged on the upper surface of the middle plate, the workpiece is placed on the main plate, the workpiece comprises: a body whose lower surface is in contact with the upper surface of the main plate and a side plate formed at the edges around the body, a plurality of first through holes are opened in the front area of ​​the body, a second through hole is opened in the middle of the rear area of ​​the body, so that a left closed area and a right closed area are formed on both sides of the second through hole respectively; The upper surface of the main board is respectively provided with a main adsorption area, a left adsorption area, and a right adsorption area corresponding to the left closed area and the right closed area of ​​the front area and the rear area of ​​the workpiece, and each of the main adsorption area, the left adsorption area, and the right adsorption area is respectively provided with a plurality of lower air grooves that are interconnected, and each of the lower air grooves in each adsorption area is connected to a vacuum generator or a vacuum pump through at least one pipeline, and a cover plate is provided above the workpiece placed on the upper surface of the main board, and the lower surface of the cover plate is in contact with the upper surface of the workpiece body; The cover plate further includes a stacked lower cover plate and an upper cover plate, and the lower surface of the lower cover plate in contact with the upper surface of the workpiece is provided with a main air groove area, a left air groove area, and a right air groove area corresponding to the main adsorption area, the left adsorption area, and the right adsorption area on the upper surface of the main board, and each of the main air groove area, the left air groove area, and the right air groove area is provided with an upper air groove, and the upper surface of the lower cover plate sealed with an air uniforming groove is provided, and a plurality of air holes extending in the vertical direction are spaced apart in the air uniforming groove and located directly above the main adsorption area, the left adsorption area, and the right adsorption area, and the air hole whose one end is connected to the air uniforming groove is connected to the main air groove area, the left air groove area or the right air groove area on the lower surface of the lower cover plate at the other end.

[0006] The further improved scheme in the above technical scheme is as follows: 1. In the above scheme, the gas storage tank connected to the lower gas tank in the main adsorption zone is connected to the vacuum generator or vacuum pump through two pipes arranged at intervals.

[0007] 2. In the above scheme, a plurality of guide columns and a plurality of positioning blocks are installed on the upper surface of the main board, a plurality of guide holes for the guide columns to be embedded in and a plurality of avoidance grooves for the positioning blocks to be embedded in are provided on the cover plate, and each of the positioning blocks can pass through a first through hole on the workpiece accordingly.

[0008] 3. In the above solution, the guide column and the positioning block both include: a connecting portion embedded and installed on the upper surface of the mainboard and a limiting portion extending upward from the upper surface of the mainboard.

[0009] 4. In the above solution, the two guide pillars are installed in the main adsorption area of ​​the main board, and another two guide pillars are arranged between the left adsorption area and the right adsorption area of ​​the main board.

[0010] 5. In the above solution, the two positioning blocks are installed at intervals in the main adsorption area of ​​the mainboard.

[0011] 6. In the above scheme, a guide sleeve is installed on the guide hole.

[0012] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The suction cover plate reinforced clamping mechanism of the present invention has an upper surface of a main board respectively provided with a main adsorption area, a left adsorption area, and a right adsorption area corresponding to the left closed area and the right closed area of ​​the front area and the rear area of ​​the workpiece, and each of the main adsorption area, the left adsorption area, and the right adsorption area is provided with a plurality of lower air grooves interconnected with each other, and each of the lower air grooves in the adsorption area is connected with a vacuum generator or a vacuum pump through at least one pipeline, and a cover plate is arranged above the workpiece placed on the upper surface of the main board, and the lower surface of the cover plate is in contact with the upper surface of the workpiece body, and the through hole on the workpiece to be processed is used as a gas channel, and a vacuum adsorption method is adopted, so that the workpiece itself can be adsorbed, and the cover plate pressed on the workpiece can be adsorbed, and then the cover plate is applied to the workpiece through the cover plate. The whole surface and uniform pressure is applied to the workpiece to achieve stable positioning of the workpiece to be processed, avoid position displacement or tool vibration during the processing of the workpiece, and improve the quality and efficiency of workpiece processing.

[0013] 2. The suction cover plate strengthening clamping mechanism of the present invention further comprises a stacked lower cover plate and an upper cover plate, and the lower surface of the lower cover plate in contact with the upper surface of the workpiece is provided with a main gas groove area, a left gas groove area, and a right gas groove area corresponding to the main adsorption area, the left adsorption area, and the right adsorption area on the upper surface of the main board, and each of the main gas groove area, the left gas groove area, and the right gas groove area is provided with an upper gas groove, and the upper surface of the lower cover plate sealed with the upper cover plate is provided with a uniform gas groove, and a plurality of air holes extending in the vertical direction are spaced apart in the uniform gas groove and located directly above the main adsorption area, the left adsorption area, and the right adsorption area, and one end is connected to the uniform gas groove. The other end of the air hole connected to the air groove is connected to the main air groove area, the left air groove area or the right air groove area on the lower surface of the lower cover plate, and an air groove area corresponding to the adsorption area on the main board is arranged on the surface of the cover plate relative to the main board, so as to further improve the stability of the adsorption of the cover plate and thus ensure the stability of the pressure on the workpiece. The arrangement of the uniform air groove connected to each air groove area on the upper surface of the lower cover plate can greatly increase the adsorption force of the cover plate as a whole, especially the cover plate area above the two closed areas of the workpiece, without changing the air extraction volume, thereby improving the stability of the pressure of the cover plate on the workpiece and the uniformity of the force of the cover plate on the workpiece.

[0014] 3. The air suction cover plate reinforced clamping mechanism of the present invention has three air storage tanks on the upper surface of the plate, each of which is connected to a vacuum generator or a vacuum pump through at least one pipe installed on the lower surface thereof, and the lower air tanks in the main adsorption area, the left adsorption area and the right adsorption area are respectively connected to an air storage tank located directly below them through a plurality of gas channels extending in the vertical direction. By using the air storage tanks as transition zones and gas uniformity zones for the gas, the strength of the adsorption force can be guaranteed, the force balance of the opposite adsorption can be improved, and the stability of the adsorption positioning can be improved; in addition, a plurality of guide columns and a plurality of positioning blocks are installed on the upper surface of the main board, and a plurality of guide holes for the guide columns to be embedded and a plurality of avoidance grooves for the positioning blocks to be embedded are provided on the cover plate, and each positioning block can pass through a first through hole on the workpiece correspondingly, thereby improving the position accuracy of the workpiece and the cover plate, avoiding position displacement of the workpiece during clamping and processing, and improving the accuracy of milling processing on the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a schematic diagram of the overall structure of the air suction cover plate strengthening clamping mechanism of the present invention; Attached Figure 2 It is a partial disassembled schematic diagram of the air suction cover plate strengthening clamping mechanism of the present invention; Attached Figure 3 For attachment Figure 2 Schematic diagram of the cross section along AA; Attached Figure 4 It is a schematic diagram of the disassembly of the cover plate of the air suction cover plate strengthening clamping mechanism of the present invention; Attached Figure 5 For attachment Figure 4 The enlarged schematic diagram of point B in the middle; Attached Figure 6 It is a structural schematic diagram of the lower surface of the lower cover plate of the air suction cover plate strengthening clamping mechanism of the present invention; Attached Figure 7 It is a structural schematic diagram of the main board of the air suction cover plate strengthening clamping mechanism of the present invention; Attached Figure 8 For attachment Figure 7 Enlarged schematic diagram of point C in the middle.

[0016] In the above figures: 100, workpiece; 101, body; 102, side plate; 103, first through hole; 104, second through hole; 105, left closed area; 106, right closed area; 1, middle plate; 2, main plate; 21, main adsorption area; 22, left adsorption area; 23, right adsorption area; 24, lower gas groove; 25, gas channel; 3, cover plate; 31, lower cover plate; 32, upper cover plate; 33, main gas groove area; 3 4. Left air groove area; 35. Right air groove area; 36. Upper air groove; 4. Bottom plate; 41. Support column; 51. X-direction air groove; 52. Y-direction air groove; 6. Sealing ring; 7. Air uniformity groove; 71. Air hole; 72. Annular groove; 8. Air storage tank; 81. Pipeline; 91. Guide column; 92. Positioning block; 93. Guide hole; 94. Avoidance groove; 95. Connecting part; 96. Limiting part; 97. Guide sleeve; 10. Handle. Implementation

[0017] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0018] Embodiment 1: A clamping mechanism for processing a workpiece 100, comprising: a middle plate 1 and a main plate 2 arranged on the upper surface of the middle plate 1, the workpiece 100 is placed on the main plate 2, the workpiece 100 comprises: a body 101 whose lower surface is in contact with the upper surface of the main plate 2 and a side plate 102 formed at the edges of the body 101, a plurality of first through holes 103 are opened in the front area of ​​the body 101, a second through hole 104 is opened in the middle of the rear area of ​​the body 101, so that a left closed area 105 and a right closed area 106 are formed on both sides of the second through hole 104 respectively; The upper surface of the main board 2 is respectively provided with a main adsorption area 21, a left adsorption area 22, and a right adsorption area 23 corresponding to the left closed area 105 and the right closed area 106 of the front area and the rear area of ​​the workpiece 100, and each of the main adsorption area 21, the left adsorption area 22, and the right adsorption area 23 is provided with a plurality of interconnected lower air grooves 24, and each of the lower air grooves 24 in each adsorption area is connected to a vacuum generator or a vacuum pump through at least one pipeline. A cover plate 3 is provided above the workpiece 100 placed on the upper surface of the main board 2, and the lower surface of the cover plate 3 is in contact with the upper surface of the body 101 of the workpiece 100; By using the through hole on the workpiece to be processed as a gas channel and adopting the vacuum adsorption method, the workpiece itself can be adsorbed, and the cover plate pressed on the workpiece can be adsorbed, so as to apply a uniform pressure on the entire surface of the workpiece through the cover plate; The cover plate 3 further includes a stacked lower cover plate 31 and an upper cover plate 32. The lower surface of the lower cover plate 31 in contact with the upper surface of the workpiece 100 is provided with a main gas groove area 33, a left gas groove area 34, and a right gas groove area 35 corresponding to the main adsorption area 21, the left adsorption area 22, and the right adsorption area 23 on the upper surface of the main board 2, and each of the main gas groove area 33, the left gas groove area 34, and the right gas groove area 35 is provided with an upper gas groove 36. The upper surface of the lower cover plate 31 sealed with the upper cover plate 32 is provided with an air-uniform groove 7. A plurality of air holes 71 extending in the vertical direction are spaced apart in the air-uniform groove 7 and located directly above the main adsorption area 21, the left adsorption area 22, and the right adsorption area 23. The air holes 71, one end of which is connected to the air-uniform groove 7, are connected to the main gas groove area 33, the left gas groove area 34, or the right gas groove area 35 on the lower surface of the lower cover plate 31 at the other end. An air groove area corresponding to the adsorption area on the main board is arranged on the surface of the cover plate relative to the main board, so as to further improve the stability of adsorption of the cover plate and thus ensure the stability of pressing the workpiece.

[0019] Three gas storage tanks 8 are provided on the upper surface of the middle plate 1, and each of the gas storage tanks 8 is connected to the vacuum generator through at least one pipe 81 installed on its lower surface, and the lower gas tanks 24 in the main adsorption area 21, the left adsorption area 22, and the right adsorption area 23 are each connected to a gas storage tank 8 located directly below them through a plurality of gas channels 25 extending in the vertical direction.

[0020] The gas storage tank 8 connected to the lower gas tank 24 in the main adsorption area 21 is connected to the vacuum generator through two pipes 81 arranged at intervals; Turn on the vacuum generator installed under the middle plate, and extract the gas in sequence through the gas storage tank on the middle plate, the gas channel on the main board, the adsorption area on the upper surface of the main board, the through holes on the workpiece, the gas groove area on the lower surface of the lower cover plate, the air holes on the lower cover plate and the gas uniforming groove on the upper surface of the lower cover plate. In this process, a balanced and stable adsorption force is generated on the cover plate and the workpiece, especially the cover plate, thereby achieving adsorption and pressure holding of the workpiece, facilitating subsequent milling of the workpiece without shifting the position of the workpiece or vibrating the tool, thereby improving the quality and yield rate of workpiece processing.

[0021] Embodiment 2: An air suction cover plate strengthening clamping mechanism, used for processing a workpiece 100, comprising: a middle plate 1 and a main plate 2 arranged on the upper surface of the middle plate 1, the workpiece 100 is placed on the main plate 2, the workpiece 100 comprises: a body 101 whose lower surface is in contact with the upper surface of the main plate 2 and a side plate 102 formed at the edges of the body 101, a plurality of first through holes 103 are opened in the front area of ​​the body 101, a second through hole 104 is opened in the middle of the rear area of ​​the body 101, so that a left closed area 105 and a right closed area 106 are formed on both sides of the second through hole 104 respectively; The upper surface of the main board 2 is respectively provided with a main adsorption area 21, a left adsorption area 22, and a right adsorption area 23 corresponding to the left closed area 105 and the right closed area 106 of the front area and the rear area of ​​the workpiece 100, and each of the main adsorption area 21, the left adsorption area 22, and the right adsorption area 23 is provided with a plurality of interconnected lower air grooves 24, and each of the lower air grooves 24 in each adsorption area is connected to a vacuum generator or a vacuum pump through at least one pipeline. A cover plate 3 is provided above the workpiece 100 placed on the upper surface of the main board 2, and the lower surface of the cover plate 3 is in contact with the upper surface of the body 101 of the workpiece 100; The cover plate 3 further includes a stacked lower cover plate 31 and an upper cover plate 32. The lower surface of the lower cover plate 31 in contact with the upper surface of the workpiece 100 is provided with a main gas groove area 33, a left gas groove area 34, and a right gas groove area 35 corresponding to the main adsorption area 21, the left adsorption area 22, and the right adsorption area 23 on the upper surface of the main board 2, and each of the main gas groove area 33, the left gas groove area 34, and the right gas groove area 35 is provided with an upper gas groove 36. The upper surface of the lower cover plate 31 sealed with the upper cover plate 32 is provided with an air-uniform groove 7. A plurality of air holes 71 extending in the vertical direction are spaced apart in the air-uniform groove 7 and located directly above the main adsorption area 21, the left adsorption area 22, and the right adsorption area 23. The air holes 71, one end of which is connected to the air-uniform groove 7, are connected to the main gas groove area 33, the left gas groove area 34, or the right gas groove area 35 on the lower surface of the lower cover plate 31 at the other end. The setting of the uniform air groove on the upper surface of the lower cover plate, which is connected to each air groove area, can greatly increase the adsorption force on the cover plate as a whole, especially the cover plate area above the two closed areas of the workpiece, without changing the air extraction volume, thereby improving the stability of the cover plate's pressure on the workpiece and improving the uniformity of the cover plate's force on the workpiece.

[0022] A plurality of guide posts 91 and a plurality of positioning blocks 92 are installed on the upper surface of the main board 2. A plurality of guide holes 93 for the guide posts 91 to be embedded in and a plurality of avoidance grooves 94 for the positioning blocks 92 to be embedded in are provided on the cover plate 3. Each of the positioning blocks 92 can pass through a first through hole 103 on the workpiece 100 correspondingly. Each guide column and positioning block is used to position the workpiece, thereby improving the position accuracy of the workpiece and the cover plate, avoiding position deviation of the workpiece during clamping and processing, and improving the accuracy of milling processing on the workpiece.

[0023] The guide column 91 and the positioning block 92 both include a connecting portion 95 embedded in the upper surface of the mainboard 2 and a limiting portion 96 extending upward from the upper surface of the mainboard 2 .

[0024] The two guide posts 91 are installed in the main adsorption area 21 of the main board 2, and another two guide posts 91 are arranged between the left adsorption area 22 and the right adsorption area 23 of the main board 2; The limiting parts of the plurality of guide posts installed on the main board pass through the through holes on the workpiece and are correspondingly embedded in the guide holes on the cover plate, thereby ensuring the position accuracy of the cover plate.

[0025] The two positioning blocks 92 are installed in the main adsorption area 21 of the main board 2 at intervals.

[0026] A guide sleeve 97 is installed on the guide hole 93 .

[0027] The workpiece 100 is a notebook C.

[0028] The main board 2 is a fiberboard.

[0029] The main board 2 is fixedly mounted on the middle board 1 by a plurality of bolts.

[0030] The lower air grooves 24 and the upper air grooves 36 in each of the above-mentioned adsorption areas include: a plurality of X-direction air grooves 51 arranged in parallel and spaced apart and a plurality of Y-direction air grooves 52 arranged in parallel and spaced apart. The X-direction air grooves 51 and the Y-direction air grooves 52 are arranged to cross each other vertically and are connected at the intersection.

[0031] A sealing ring 6 is disposed on the outer side of each of the main adsorption area 21 , the left adsorption area 22 , the right adsorption area 23 and the main air groove area 33 , the left air groove area 34 , and the right air groove area 35 .

[0032] The upper air groove 36 and the lower air groove 24 are partially overlapped in the horizontal direction.

[0033] The outer side of the gas homogenizing groove 7 is provided with an annular groove 72 with a sealing strip embedded therein.

[0034] The upper cover plate 32 and the lower cover plate 31 are fixedly connected by a plurality of bolts, and the lower surface of the upper cover plate 32 is in compression contact with the sealing strip in the annular groove 72 .

[0035] Two handles 10 are installed at intervals on the upper surface of the cover plate 3; When in use, first move the cover plate away from the main plate through the handle on the cover plate, load the workpiece to be processed into the middle plate, and make the limiting parts of several positioning blocks installed on the main plate correspondingly embedded in the first through holes on the workpiece, so as to ensure the positioning accuracy of the workpiece.

[0036] The above also has a bottom plate 4 arranged below the middle plate 1 , and the bottom plate 4 and the middle plate 1 are connected via at least two support columns 41 .

[0037] Four of the five support columns 41 are respectively disposed at four corners of the bottom plate 4 or the middle plate 1 , and the remaining support column 41 is connected to the center of the lower surface of the middle plate 1 .

[0038] The working principle of the present invention is as follows: When in use, firstly, the cover plate is moved away from the main plate by the handle on the cover plate, the workpiece to be processed is loaded into the middle plate, and the limiting parts of the plurality of positioning blocks installed on the main plate are correspondingly embedded in the first through holes on the workpiece, so as to ensure the position accuracy of the workpiece; Then, the cover plate is moved to the top of the workpiece that has been placed in the appropriate position through the handle on the cover plate, so that the lower surface of the cover plate fits with the upper surface of the workpiece. At the same time, the limiting parts of the guide columns installed on the main board pass through the through holes on the workpiece and are correspondingly embedded in the guide holes on the cover plate, so as to ensure the position accuracy of the cover plate; Turn on the vacuum pump or vacuum generator installed under the middle plate, and extract the gas in sequence through the gas storage tank on the middle plate, the gas channel on the main board, the adsorption area on the upper surface of the main board, the through holes on the workpiece, the gas groove area on the lower surface of the lower cover plate, the air holes on the lower cover plate and the gas uniforming groove on the upper surface of the lower cover plate. In this process, a balanced and stable adsorption force is generated on the cover plate and the workpiece, especially the cover plate, thereby achieving adsorption and pressure holding of the workpiece, facilitating subsequent milling of the workpiece without shifting the position of the workpiece or vibrating the tool, thereby improving the quality and yield rate of workpiece processing.

[0039] When the above-mentioned air suction cover plate is used to strengthen the clamping mechanism, it utilizes the through holes on the workpiece to be processed as gas channels and adopts a vacuum adsorption method to achieve stable positioning of the workpiece to be processed, avoid position displacement or tool vibration of the workpiece during processing, and improve the quality and efficiency of workpiece processing; and the air groove area set on the cover plate and the air uniforming groove on the upper surface of the lower cover plate not only improve the stability of the cover plate adsorption to ensure the stability of the workpiece pressure, but also improve the stability of the cover plate pressure on the workpiece and the uniformity of the cover plate force on the workpiece; and the air storage groove is used as a transition zone and air uniforming zone for gas and the guide column and positioning block are set, which can not only ensure the strength of the adsorption force, improve the force balance of the opposite adsorption, improve the stability of the adsorption positioning, but also improve the position accuracy of the workpiece and the cover plate, and avoid position displacement of the workpiece during clamping and processing.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An air suction cover plate strengthening clamping mechanism, used for processing a workpiece (100), comprising: A middle plate (1) and a main plate (2) arranged on the upper surface of the middle plate (1), the workpiece (100) being placed on the main plate (2), characterized in that: the workpiece (100) comprises: a main body (101) whose lower surface is in contact with the upper surface of the main plate (2) and side plates (102) formed at the edges of the main body (101), a plurality of first through holes (103) being opened in the front area of ​​the main body (101), a second through hole (104) being opened in the middle of the rear area of ​​the main body (101), so that a left closed area (105) and a right closed area (106) are respectively formed on both sides of the second through hole (104); The upper surface of the main board (2) is respectively provided with a main adsorption area (21), a left adsorption area (22), and a right adsorption area (23) corresponding to the left closed area (105) and the right closed area (106) of the front area and the rear area of ​​the workpiece (100); a plurality of interconnected lower air grooves (24) are respectively provided in the main adsorption area (21), the left adsorption area (22), and the right adsorption area (23); and the lower air grooves (24) in each adsorption area are respectively connected to a vacuum generator or a vacuum pump through at least one pipeline; a cover plate (3) is provided above the workpiece (100) placed on the upper surface of the main board (2); and the lower surface of the cover plate (3) is in contact with the upper surface of the body (101) of the workpiece (100); The cover plate (3) further comprises a stacked lower cover plate (31) and an upper cover plate (32), wherein the lower surface of the lower cover plate (31) in contact with the upper surface of the workpiece (100) is provided with a main gas groove area (33), a left gas groove area (34), and a right gas groove area (35) corresponding to the main adsorption area (21), the left adsorption area (22), and the right adsorption area (23) on the upper surface of the main plate (2), and the upper gas groove (33), the left gas groove area (34), and the right gas groove area (35) are each provided with an upper gas groove (33). 6), an air-homogenizing groove (7) is provided on the upper surface of the lower cover plate (31) which is sealed to the upper cover plate (32), a plurality of air holes (71) extending in the vertical direction are arranged in the air-homogenizing groove (7) and are located directly above the main adsorption area (21), the left adsorption area (22), and the right adsorption area (23), one end of the air hole (71) being connected to the air-homogenizing groove (7) and the other end of which is connected to the main air groove area (33), the left air groove area (34), or the right air groove area (35) on the lower surface of the lower cover plate (31).

2. The air suction cover plate strengthening clamping mechanism according to claim 1, characterized in that: The upper surface of the middle plate (1) is provided with three gas storage tanks (8), each of which is connected to a vacuum generator or a vacuum pump via at least one pipe (81) installed on its lower surface, and the lower gas tanks (24) in the main adsorption area (21), the left adsorption area (22), and the right adsorption area (23) are connected to a gas storage tank (8) located directly below them via a plurality of gas channels (25) extending in the vertical direction.

3. The air suction cover plate strengthening clamping mechanism according to claim 2 is characterized in that: The gas storage tank (8) communicated with the lower gas tank (24) in the main adsorption zone (21) is communicated with a vacuum generator or a vacuum pump via two pipes (81) arranged at intervals.

4. The air suction cover plate strengthening clamping mechanism according to claim 1, characterized in that: A plurality of guide columns (91) and a plurality of positioning blocks (92) are mounted on the upper surface of the main board (2); a plurality of guide holes (93) for the guide columns (91) to be embedded in and a plurality of avoidance grooves (94) for the positioning blocks (92) to be embedded in are provided on the cover plate (3); each of the positioning blocks (92) can pass through a corresponding first through hole (103) on the workpiece (100).

5. The air suction cover plate strengthening clamping mechanism according to claim 4, characterized in that: The guide column (91) and the positioning block (92) both comprise: a connecting portion (95) embedded and mounted on the upper surface of the main board (2), and a limiting portion (96) extending upwardly from the upper surface of the main board (2).

6. The air suction cover plate strengthening clamping mechanism according to claim 4 or 5, characterized in that: The two guide columns (91) are installed in the main adsorption area (21) of the main board (2), and another two guide columns (91) are arranged between the left adsorption area (22) and the right adsorption area (23) of the main board (2).

7. The air suction cover plate strengthening clamping mechanism according to claim 4 or 5, characterized in that: The two positioning blocks (92) are installed at intervals in the main adsorption area (21) of the main board (2).

8. The air suction cover plate strengthening clamping mechanism according to claim 4 or 5, characterized in that: A guide sleeve (97) is installed on the guide hole (93).

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