Patent Application
20130168910
1. Technical Field
The present disclosure relates to sucking devices, particularly to a sucking device for vacuum sucking a workpiece.
2. Description of Related Art
During a mechanical treatment, such as CNC machining, deburring and polishing, a vacuum sucker connecting with a vacuum device may be used to clamp a workpiece for machining. The vacuum sucker uses a sucking force via the vacuum device for sucking the workpiece. However, the vacuum sucker leaves a small space for sucking the workpiece, which results in a decrease of the sucking intensity. When the workpiece is machined by a machining device machines with a mechanical force, the sucking force may not counter balance the mechanical force. As a result, the finished workpieces may not meet a required standard since the workpieces may not be machined with a required precision.
Therefore, there is room for improvement in the art.
The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout several views.
The fixing plate 11 is fixed on the conveyer belt 23. The supporting posts 13 are substantially perpendicularly fixed on four corners of the fixing plate 11, for supporting the mounting plate 15. The mounting plate 15 is mounted on top ends of the supporting posts 13. The mounting plate 15 parallels to the fixing plate 11, and defines a receiving space 17 cooperating with the fixing plate 11. The mounting plate 15 defines a pair of first through holes 151 (shown in
The sucking assembly 30 includes a matching plate 31, a first annular sealing member 32, a second annular sealing member 33, an air controlling member 34, a vacuum generator 35, and an air pipe 36. The matching plate 31 is mounted on the mounting plate 15 at a side away from the fixing plate 11, and parallels to the mounting plate 15. The matching plate 31 includes a profile surface 310 away from the mounting plate 15 to match with each of the workpieces 300, for steadily positioning the workpieces 300. The matching plate 31 is substantially rectangular, and defines a second through hole 311, a pair of air holes 313, and a plurality of scribed grooves 315 at the profile surface 310. The second through hole 311 is substantially located at a center of the profile surface 310. The air holes 313 are located opposite sides of the second through hole 311 and aligns with the first through holes 151, respectively. The scribed grooves 315 interlace with each other, and communicate with the air holes 313. In other embodiments, the number of the air hole 313 can be one, three, or more than three. The second through hole 311 can be omitted.
The first annular sealing member 32 is mounted on the profile surface 310 of the matching plate 31, and is substantially an enclosed shape to encircle the second through hole 311 and the air holes 313. In the illustrated embodiment, the first annular sealing member 32 is substantially a rectangular frame, and is made of silicon materials. In other embodiments, the first annular sealing member 32 can be made by other flexible materials, such as rubber, for example.
The second annular sealing member 33 is mounted on the profile surface 310 of the matching plate 31. An enclosed area of the second annular sealing member 33 is located in the first annular sealing member 32. The second annular sealing member 33 surrounds the second through hole 311 without surrounding the air holes 313. In the illustrated embodiment, the second annular sealing member 33 is substantially a ring, and is made of silicon material. In other embodiments, the second annular sealing member 33 can be made by other flexible materials, such as rubber, for example.
The air controlling member 34 is mounted on a sidewall of the mounting plate 15, and includes a main body 341 mounted on the mounting plate 15, and a switch 344 mounted on a sidewall of the main body 341 away from the mounting plate 15. The main body 341 defines an air inlet 342 and an air outlet 343 at opposite sidewalls. The air inlet 342 communicates with the air outlet 343, and the switch can be processed to control the air flow between the air inlet 342 and the air outlet 343 in a manual way.
The vacuum generator 35 is mounted on the fixing plate 11, and received in the receiving space 17. The air pipe 36 includes a first pipe portion 361 and a second pipe portion 363. The first pipe portion 361 connects the air outlet 343 with the vacuum generator 35, for transmitting air from the switch 344 to the vacuum generator 35. The second pipe portion 363 includes a main pipe 3631, a pair of branch pipes 3633, and a Y-joint 3635 connected the main pipe 3631 and the branch pipes 3633. The main pipe 3631 and the Y-joint 3635 communicate the vacuum generator 35 with the branch pipes 3633 cooperatively. A distal end of each of the pair of branch pipes 3633 communicates with the corresponding air hole 313.
In assembly, the fixing plate 11 is fixed on the conveyer belt 23, and the supporting posts 13 are mounted on the fixing plate 11. The mounting plate 15 is mounted on the supporting posts 13, and the matching plate 31 is mounted on the mounting plate 15 at a side away from the fixing plate 11. The first annular sealing member 32 and the second annular sealing member 33 are mounted on the profile surface 310. The air controlling member 34 is mounted on a sidewall of the mounting plate 15, and the vacuum generator 35 is mounted on the fixing plate 11. The first pipe portion 361 connects the air outlet 343 with the vacuum generator 35. The second pipe portion 363 connects the vacuum generator 35 with the air holes 313.
In use, air is input from the air inlet 342. One of the workpieces 300 is position on the profile surface 310 of the matching plate 31, and covers the first annular sealing member 32 and the second annular sealing member 33. The workpiece 300, the matching plate 31, the first annular sealing member 32, and the second annular sealing member 33 cooperatively define a sealing chamber (not shown). The scribed grooves 315 are for enlarging the space of the sealing chamber. The switch 344 is switched on, and the air is transmitted to the vacuum generator 35 via the air outlet 343 and the first pipe portion 361. The vacuum generator 35 forms a whirling airflow, to allow the air in the sealing chamber to be sucked into the second pipe portion 363 via the air holes 313. Because the first annular sealing member 32 and the second annular sealing member 33 prevent air to from entering the sealing chamber, the outer atmospheric pressure is larger than the air pressure of the first annular sealing member 32, thus the workpiece 300 is sucked on the sucking devices 100 steadily. The conveyer belt 23 conveys the sucking devices 100 bearing with the workpieces 300 to the machining area 21, for machining the workpieces 300.
In other embodiments, the fixing assembly 10 can be replaced by other mounting structures, such as a platform, for example, and the air pipe 36 passes through the platform to communicate with the air holes 313.
Because a sucking area of each of the sucking devices 100 to each of the workpieces 300 is decided by the an area between the first annular sealing member 32 and the second annular sealing member 33, the sucking area can be designed to a suitable area for steadily sucking each of the workpieces 300. When the workpieces 300 are machined, the sucking force is strong enough to counter balance the machining force of a machining device.
It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the embodiments or sacrificing all of its material advantages.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201110450527.0 | Dec 2011 | CN | national |
