Vacuum suction device

Abstract

The utility model relates to mechanical processing technical field discloses a kind of vacuum adsorption devices, including multiple vacuum chuck, be located on worktop, the suction end of the vacuum chuck is upward, for the bottom of cooperation adsorption workpiece;Distributor, two side-by-side gas path pipelines are equipped in the distributor, one end of each gas path pipeline is connected with corresponding vacuum pump, and the side edge of each gas path pipeline away from each other is communicated with multiple parallel and interval distribution interfaces, each vacuum chuck is communicated with corresponding distribution interface by hose. The vacuum adsorption device can effectively avoid interference when clamping workpiece, effectively control the machining precision and size of workpiece, and clamping is convenient and reliable.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing technology, and specifically to a vacuum adsorption device. Background Technology

[0002] In the field of machining, there are many types of parts that require machining, such as single-piece faceplates, housings, thin-walled aerospace parts, and large flat-panel antennas. Currently, the milling of these parts often uses traditional clamping fixtures such as dedicated shims, pressure plates, or angle irons. Due to the differences in shape, size, and structure of these parts, it is usually necessary to use a combination of multiple fixtures for clamping. However, due to the stress characteristics of the part's structure and the limitations on the degrees of freedom of the machining area, clamping with shims, pressure plates, or angle irons is difficult to guarantee the machining accuracy and dimensional requirements of the parts. Utility Model Content

[0003] The purpose of this invention is to solve at least one of the technical problems existing in the prior art by providing a vacuum adsorption device that can effectively avoid interference when clamping workpieces, thereby achieving effective control over the machining accuracy and dimensions of the workpieces, and is convenient and reliable for clamping.

[0004] To achieve the above objectives, this utility model provides a vacuum adsorption device, comprising: Multiple vacuum suction cups are placed on the worktable, with the suction end of the vacuum suction cups facing upwards, for adsorbing the bottom of the workpiece; The distributor has two parallel air passages inside. One end of each air passage is connected to a corresponding vacuum pump, and the sides of each air passage that are far apart from each other are connected to multiple parallel and spaced-apart distributor interfaces. Each vacuum suction cup is connected to the corresponding distributor interface through a flexible tube.

[0005] Optionally, the vacuum suction cup includes: The suction cup body is cylindrical. The vacuum suction cup air inlet is located at the lower side of the suction cup body and is used to communicate with the dispenser; The adsorption chamber is located inside the suction cup body and is connected to the air inlet of the vacuum suction cup. Multiple adsorption channels are located at the center of the top surface of the suction cup body, and the multiple adsorption channels are connected to the adsorption cavity.

[0006] Optionally, the suction cup body has four L-shaped grooves distributed in a circular pattern on its side and top.

[0007] Optionally, a detachable limiting block is provided on the vertical surface of the L-shaped groove.

[0008] Optionally, the top surface of the suction cup body is provided with an annular groove surrounding the plurality of suction channels, and a sealing ring is provided in the annular groove.

[0009] Optionally, the top surface of the suction cup body is also provided with a detachable positioning pin.

[0010] Optionally, a pressure relief valve is also provided on the side of the suction cup body, and the pressure relief valve is connected to the suction chamber.

[0011] Optionally, the vacuum suction cup air inlet is equipped with a one-way valve.

[0012] Optionally, the dispenser interface is provided with a removable plug.

[0013] Optionally, at least one of the gas lines is equipped with a check valve.

[0014] The above technical solution involves installing multiple vacuum suction cups on the worktable with their suction ends facing upwards, enabling multi-directional suction from the bottom of the workpiece. The distributor contains two parallel air passages, each connected to a corresponding vacuum pump at one end. The sides of each air passage, away from each other, connect to multiple parallel and spaced distributor interfaces, facilitating centralized management and distribution of vacuum suction from the multiple vacuum suction cups. The vacuum suction cups are connected to the distributor interfaces via flexible hoses, making connection and operation simple and convenient. Furthermore, the multiple distributor interfaces allow the vacuum suction device to flexibly increase or decrease the number of vacuum suction cups and adjust their positions according to the size and shape characteristics of different workpieces, effectively ensuring the stability of the workpiece during processing and improving processing accuracy and quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation structure of a vacuum adsorption device provided by this utility model; Figure 2 This is a schematic diagram of the structure of the vacuum suction cup in this utility model; Figure 3 This is a schematic diagram of the distributor in this utility model; Figure 4 This is a schematic diagram of the structure of a single vacuum chuck used in conjunction with a flower disc-type workpiece in this utility model; Figure 5 This is a schematic diagram of the structure of multiple vacuum suction cups used in conjunction with the housing workpiece in this utility model.

[0016] Explanation of reference numerals in the attached figures 1. Vacuum suction cup; 11. Suction cup body; 12. Vacuum suction cup air inlet; 13. Adsorption channel; 14. L-shaped groove; 15. Limiting block; 16. Annular groove; 17. Positioning pin; 18. Pressure relief valve; 2. Distributor; 21. Air pipeline; 22. Distributor interface; 23. Plug; 3. Patterned workpiece; 4. Shell workpiece; 5. Thin-walled workpiece. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0018] like Figure 1 As shown, this utility model provides a vacuum adsorption device, which includes multiple vacuum suction cups 1 and a distributor 2. Specifically, the multiple vacuum suction cups 1 are disposed on a worktable with their adsorption ends facing upwards, for adsorbing the bottom of the workpiece; the distributor 2 has two parallel air passage pipes 21 inside, one end of each air passage pipe 21 is connected to a corresponding vacuum pump, and the sides of each air passage pipe 21 that are far apart from each other are connected to multiple parallel and spaced distributor interfaces 22, and each vacuum suction cup 1 is connected to the corresponding distributor interface 22 through a flexible tube.

[0019] In the technical solution provided by this utility model, the two parallel exhaust pipes 21 in the distributor 2 can serve as backups for each other. When one exhaust pipe 21 fails, such as when the vacuum pump fails or the pipe leaks, the other pipe can still maintain part or all of the vacuum suction cup 1's vacuum state, thereby improving the reliability of the vacuum adsorption device.

[0020] A single vacuum suction cup 1 is connected to a distributor 2 or a vacuum pump via a flexible hose. The distributor 2 has a single air path pipe 21 connecting to multiple distributor interfaces 22, which simplifies the overall air path layout of the vacuum adsorption device and reduces installation complexity. Simultaneously, the number and position of the vacuum suction cups 1 can be flexibly increased or decreased according to the workpiece shape or worktable layout. Multiple independent vacuum suction cups 1 establish multiple adsorption points at the bottom of the workpiece's inner cavity, thereby clamping the entire workpiece cavity surface and satisfying the machining of workpiece geometric features.

[0021] like Figure 2 As shown, in this utility model, the vacuum suction cup 1 includes a suction cup body 11, a vacuum suction cup inlet 12, an adsorption chamber, and multiple adsorption channels 13. Specifically, the suction cup body 11 is cylindrical, the vacuum suction cup inlet is located at the lower side of the suction cup body 11 for communication with the distributor 2, the adsorption chamber is located inside the suction cup body 11 and communicates with the vacuum suction cup inlet 12, and multiple adsorption channels 13 are located at the center of the top surface of the suction cup body 11 and communicate with the adsorption chamber.

[0022] It is understood that the multiple adsorption channels 13 can be arranged in any appropriate manner, and in some embodiments, the multiple adsorption channels 13 are distributed in a honeycomb pattern.

[0023] Furthermore, four L-shaped grooves 14 distributed in a circular pattern are provided on the sides and top of the suction cup body 11.

[0024] like Figure 2 As shown, the horizontal short side of the L-shaped groove 14 cooperates with the bottom of the vacuum suction cup 1 to form a stepped part. The stepped part can be used with a pressing tool to press and fix the vacuum suction cup 1, which improves the stability of the vacuum suction cup 1 during use.

[0025] Furthermore, a detachable limiting block 15 is provided on the vertical surface of the L-shaped groove 14. The limiting block 15 extends in the vertical direction and forms a matching limiting structure with the top surface of the suction cup body 11.

[0026] like Figure 5 As shown, for the adsorption and positioning of the shell workpiece 4, multiple vacuum suction cups 1 are arranged in a combinable manner. The multiple vacuum suction cups 1 are respectively set in the bottom area of ​​the shell workpiece 4 near the edge. Their top surfaces are tightly adsorbed to the lower surface of the workpiece by the negative pressure generated by the adsorption channels 13. At the same time, the limiting block 15 installed on the vertical surface of the L-shaped groove 14 extends vertically upward, and its top surface exceeds the height of the top surface of the suction cup body 11, abutting against the side contour surface of the shell workpiece 4, thereby further restricting the horizontal displacement of the shell workpiece 4.

[0027] To accommodate workpieces of different shapes and achieve compatible adsorption of workpieces of various specifications, the limiting block 15 is designed to be detachably connected to the suction cup body 11. It is understood that this detachable connection can be achieved using any suitable method, as long as it ensures that the limiting block 15 is tightly fixed to the suction cup body 11 and will not loosen during workpiece processing.

[0028] In some embodiments, the limiting block 15 is fixed to the vertical surface of the L-shaped groove 14 by bolts. This connection method is convenient for installation and disassembly, and allows for quick replacement of limiting blocks 15 of different sizes according to the side profile characteristics of the workpiece, thereby ensuring the reliability of the connection.

[0029] In this invention, to avoid air leakage caused by the micro-gap between the adsorption end of the vacuum suction cup 1 and the contact surface of the workpiece during vacuum adsorption, the top surface of the suction cup body 11 is provided with an annular groove 16 surrounding multiple adsorption channels 13, and a sealing ring is provided in the annular groove 16.

[0030] In this utility model, the top surface of the suction cup body 11 is also provided with a detachable positioning pin 17.

[0031] It is understandable that, such as Figure 4As shown, for the adsorption and positioning of the disc-shaped workpiece 3, only a single vacuum suction cup 1 is needed to clamp the disc-shaped workpiece 3. In order to adsorb and clamp the disc-shaped workpiece 3, the detachable positioning pin 17 is first installed into the preset mounting hole on the top surface of the suction cup body 11. The position of the positioning pin 17 can be determined according to the positioning hole on the disc-shaped workpiece 3, as long as it is ensured that the positioning pin 17 can be accurately inserted into the positioning hole of the workpiece.

[0032] It is understood that the vacuum adsorption device provided in this application can achieve adsorption and positioning of a single flower-shaped workpiece 3, and can also achieve adsorption and positioning of multiple flower-shaped workpieces 3 simultaneously by connecting a flexible hose.

[0033] After the positioning pin 17 is installed, place the disc-shaped workpiece 3 on the top surface of the suction cup body 11, ensuring that the positioning pin 17 can be accurately inserted into the corresponding positioning hole of the workpiece. At this point, start the vacuum pump. Under the negative pressure generated by the suction channel 13, the top surface of the suction cup body 11 tightly adheres to the bottom surface of the disc-shaped workpiece 3. The engagement of the positioning pin 17 with the positioning hole further restricts the rotation and movement of the disc-shaped workpiece 3 on the horizontal plane.

[0034] In some embodiments, multiple positioning pins 17 may be provided, with the multiple positioning pins 17 evenly distributed around the adsorption channel 13, corresponding one-to-one with the positioning holes on the flower disc workpiece 3.

[0035] To avoid interfering with workpieces of other shapes, the locating pin 17 is detachably connected to the suction cup body 11. It is understood that this detachable connection can be any suitable method, as long as it ensures that the locating pin 17 is tightly fixed to the suction cup body 11 and will not loosen during workpiece processing.

[0036] In some embodiments, the locating pin 17 is provided with an external thread at one end near the suction cup body 11, and the mounting hole on the top surface of the suction cup body 11 is provided with an internal thread that matches the external thread. The locating pin 17 is screwed into the mounting hole on the top surface of the suction cup body 11 through the external thread to fix the locating pin 17 to the suction cup body 11.

[0037] In this invention, a pressure relief valve 18 is also provided on the side of the suction cup body 11, and the pressure relief valve 18 is connected to the suction chamber. The setting of the pressure relief valve 18 allows the operator to flexibly control the release of the suction force according to actual needs. For example, when the workpiece suction position is inaccurate and needs to be readjusted, the pressure relief valve 18 can be opened to quickly release the suction state of the vacuum suction cup 1 and reposition the workpiece, improving the convenience and flexibility of operation.

[0038] In this invention, a one-way valve is provided inside the vacuum suction cup air inlet 12.

[0039] The vacuum suction cup inlet 12 is used to connect the distributor 2 hose to the adsorption chamber. It has an integrated one-way valve inside, so that the gas can only flow from the adsorption chamber to the inlet under the vacuum action of the vacuum pump, and is cut off in the reverse direction.

[0040] When the vacuum pump is working normally, the one-way valve opens under the action of negative pressure, and the gas in the adsorption chamber is quickly drawn away through the air inlet to maintain the preset vacuum level. If the vacuum pump stops due to a malfunction or the connecting air line leaks briefly, the negative pressure in the adsorption chamber will drive the one-way valve to close, blocking the backflow of external air, avoiding a sudden drop in vacuum level, providing a longer safe adsorption time for the workpiece, and preventing the workpiece from falling off during processing.

[0041] like Figure 3 As shown, in this utility model, the distributor interface 22 is provided with a detachable plug 23.

[0042] Each gas pipe 21 of the distributor 2 is provided with multiple distributor ports 22 for connecting the vacuum suction cup 1 hose. The removable plug 23 can be any suitable type of plug 23, such as a threaded plug 23, a quick-connect plug 23, etc. The plug 23 can close unused distributor ports 22 as needed to achieve the flexibility and maintenance convenience of the vacuum adsorption device.

[0043] In this invention, at least one gas pipeline 21 is equipped with a one-way valve.

[0044] In summary, the vacuum suction cup 1 in the vacuum adsorption device provided by this utility model adopts a split design, which can realize three flexible suction methods.

[0045] 1. Single suction mode, mainly for small, regular disc-shaped workpieces 3.

[0046] Second, the skip suction mode is mainly for large thin-walled workpieces 5 with features such as bosses and grooves. By arranging multiple vacuum suction cups 1 at intervals and using the dual-channel design of the distributor 2, interference can be effectively avoided, while avoiding the processing area or weak parts, and preventing feature deformation caused by concentrated adsorption force.

[0047] III. Combined suction mode, used for shell workpieces 4, thin-walled workpieces 5, etc.

[0048] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A vacuum adsorption device, characterized in that, include: Multiple vacuum suction cups (1) are provided on the worktable, with the suction end of the vacuum suction cups (1) facing upwards, for adsorbing the bottom of the workpiece; Distributor (2), the distributor (2) has two parallel air passage pipes (21) inside, one end of each air passage pipe (21) is connected to the corresponding vacuum pump, and the sides of each air passage pipe (21) that are far apart from each other are connected to multiple parallel and spaced distributor interfaces (22), and each vacuum suction cup (1) is connected to the corresponding distributor interface (22) through a hose.

2. The vacuum adsorption device according to claim 1, characterized in that, The vacuum chuck (1) includes: The suction cup body (11) is cylindrical; The vacuum suction cup air inlet (12) is located at the lower side of the suction cup body (11) and is used to communicate with the distributor (2); The adsorption chamber is located inside the suction cup body (11) and is connected to the air inlet (12) of the vacuum suction cup; Multiple adsorption channels (13) are provided at the center of the top surface of the suction cup body (11), and the multiple adsorption channels (13) are connected to the adsorption cavity.

3. The vacuum adsorption device according to claim 2, characterized in that, The suction cup body (11) has four L-shaped grooves (14) arranged in a circular pattern on its side and top.

4. The vacuum adsorption device according to claim 3, characterized in that, The vertical surface of the L-shaped groove (14) is provided with a detachable limiting block (15).

5. The vacuum adsorption device according to claim 2, characterized in that, The top surface of the suction cup body (11) is provided with an annular groove (16) surrounding the multiple adsorption channels (13), and a sealing ring is provided in the annular groove (16).

6. The vacuum adsorption device according to claim 2, characterized in that, The top surface of the suction cup body (11) is also provided with a detachable positioning pin (17).

7. The vacuum adsorption device according to claim 2, characterized in that, The suction cup body (11) is also provided with a pressure relief valve (18) on its side, and the pressure relief valve (18) is connected to the suction chamber.

8. The vacuum adsorption device according to claim 2, characterized in that, The vacuum suction cup air inlet (12) is equipped with a one-way valve inside.

9. The vacuum adsorption device according to claim 1, characterized in that, The distributor interface (22) is provided with a removable plug (23).

10. The vacuum adsorption device according to claim 1, characterized in that, At least one of the gas lines (21) is equipped with a check valve.

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