Pneumatic chuck with double locking structures

Abstract

The utility model relates to the technical field of chucks, and discloses a pneumatic chuck with a double-locking structure, which comprises a chuck body, a fixed plate is fixedly mounted on the upper surface of the chuck body, a telescopic cylinder is fixedly mounted on the side wall of the fixed plate, and the telescopic cylinder is fixedly mounted on the side wall of the fixed plate. A telescopic air cylinder is fixedly installed on the chuck body, a fixing block is fixedly installed at the output end of the telescopic air cylinder, a fixing mechanism is arranged above the chuck body, a promoting mechanism is arranged above the chuck body, the threaded rod is movably installed on the surface of the fixing block, and the cambered surface of the threaded rod is in threaded connection with a movable block. According to the pneumatic chuck with the double-locking structure, a telescopic air cylinder is started to enable a fixed block to clamp a workpiece, before clamping, a threaded rod is adjusted to enable a movable block to move, an L-shaped locking plate conducts double fixing on the upper end of the workpiece under the action of a torsional spring, a positioning block on the locking plate better adapts to the upper surface of the workpiece for fixing, and the clamping effect is good. And the workpiece is stably fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of chucks, in particular to a pneumatic chuck with a double locking structure. Background Art

[0002] A chuck is a mechanical device used on machine tools to clamp workpieces. It is a machine tool accessory that clamps and positions the workpiece by radial movement of movable jaws evenly distributed on the chuck body.

[0003] According to a publicly disclosed pneumatic chuck fixture with a double locking mechanism (Announcement No.: CN217192653U), the above application sets a limit slide to limit the position of the screw block, driving the screw block to move upward, thereby driving the movable frame and the reinforced locking plate to move upward, and the stability during displacement is enhanced by setting a telescopic rod.

[0004] However, in actual use of the above equipment, the traditional pneumatic chuck has a locking process, and the clamped material may still become loose due to dragging during the processing, which greatly reduces the clamping effect of the pneumatic chuck. In view of this, we have proposed a pneumatic chuck with a double locking structure. Utility Model Content

[0005] The purpose of the present invention is to provide a pneumatic chuck with a double locking structure to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pneumatic chuck with a double locking structure, comprising a chuck body, a fixing plate fixedly mounted on the upper surface of the chuck body, a telescopic cylinder fixedly mounted on the side wall of the fixing plate, a fixing block fixedly mounted on the output end of the telescopic cylinder, a fixing mechanism provided above the chuck body, and a promoting mechanism provided above the chuck body, the promoting mechanism comprising:

[0007] a threaded rod, the threaded rod being movably mounted on the surface of the fixed block, the arcuate surface of the threaded rod being threadedly connected to the movable block, the inner wall of the movable block being fixedly connected to the straight rod, the arcuate surface of the straight rod being fixedly connected to the torsion spring, and one end of the torsion spring away from the arcuate surface of the straight rod being fixedly connected to the inner wall of the locking plate;

[0008] The movable groove is opened on the surface of the locking plate, the inner wall of the movable groove is fixedly connected to the fixing rod, and the arc surface of the fixing rod is movably installed with the positioning block.

[0009] Preferably, the promotion mechanism includes a curved rod, the curved rod is fixedly mounted on the inner wall of the movable groove, and the inner wall of the movable groove is fixedly connected to a curved spring.

[0010] Preferably, a sliding hole is provided on the surface of the positioning block, the shape of the sliding hole is adapted to the shape of the bending rod, and the end of the bending spring away from the movable groove is fixedly connected to the arc surface of the positioning block, so that the positioning block can slide on the arc surface of the bending rod.

[0011] Preferably, a mounting groove is provided on the surface of the movable block, the length of the mounting groove is adapted to the length of the straight rod, and the straight rod can be mounted on the inner wall of the mounting groove.

[0012] Preferably, the locking plate is L-shaped, a rotation hole is provided on the surface of the locking plate, the diameter of the rotation hole is adapted to the diameter of the straight rod, the locking plate is sleeved on the arc surface of the straight rod, and the locking plate can slide on the arc surface of the straight rod.

[0013] Preferably, there are a plurality of positioning blocks, and the plurality of positioning blocks are movably mounted on the arc surface of the fixing rod in a linear array, and the plurality of positioning blocks fix the surface of the clamped object.

[0014] Compared with the prior art, the present invention provides a pneumatic chuck with a double locking structure, which has the following beneficial effects:

[0015] 1. The pneumatic chuck with a double locking structure is equipped with a fixing mechanism. The telescopic cylinder is activated to enable the fixed block to clamp the workpiece. Before clamping, the threaded rod is adjusted to move the movable block. The L-shaped locking plate double-fixes the upper end of the workpiece under the action of the torsion spring. The positioning block on the locking plate better adapts to the upper surface of the workpiece for fixing, thereby stably fixing the workpiece.

[0016] 2. The pneumatic chuck with a double locking structure is provided with a promotion mechanism. The fixed block adapts to the surface of the workpiece on the surface of the fixed rod for clamping. The fixed block offsets and squeezes the bending spring on the arc surface of the fixed rod to adapt to the surface of the workpiece. At the same time, after processing is completed, the bending spring resets, so that the fixed block resets for the next fixation, further ensuring the stability of the workpiece clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structural fixing block of the utility model;

[0019] Figure 3 This is a partial explosion diagram of the movable block of the structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the locking plate structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the structural positioning block of the utility model.

[0022] In the figure: 1. Chuck body; 2. Telescopic cylinder; 3. Fixing mechanism; 301. Threaded rod; 302. Movable block; 303. Straight rod; 304. Torsion spring; 305. Locking plate; 306. Movable slot; 307. Fixing rod; 308. Positioning block; 4. Promotion mechanism; 401. Bending rod; 402. Bending spring; 5. Fixing block. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a pneumatic chuck with a double locking structure, comprising a chuck body 1, a fixed plate fixedly mounted on the upper surface of the chuck body 1, a telescopic cylinder 2 fixedly mounted on the side wall of the fixed plate, a fixed block 5 fixedly mounted on the output end of the telescopic cylinder 2, a fixing mechanism 3 is arranged above the chuck body 1, and a promoting mechanism 4 is arranged above the chuck body 1, the promoting mechanism 4 comprising: a threaded rod 301, a movable block 302, a straight rod 303, a torsion spring 304, a locking plate 305, a movable groove 306, a fixed rod 307, and a positioning block 308.

[0024] In one embodiment of the present utility model, the threaded rod 301 is movably installed on the surface of the fixed block 5, the arc surface of the threaded rod 301 is threadedly connected to the movable block 302, the inner wall of the movable block 302 is fixedly connected to the straight rod 303, the arc surface of the straight rod 303 is fixedly connected to the torsion spring 304, and the end of the torsion spring 304 away from the arc surface of the straight rod 303 is fixedly connected to the inner wall of the locking plate 305, the movable groove 306 is opened on the surface of the locking plate 305, the inner wall of the movable groove 306 is fixedly connected to the fixed rod 307, and the arc surface of the fixed rod 307 is movably installed with the positioning block 308.

[0025] In addition, the promotion mechanism 4 includes a bending rod 401, which is fixedly installed on the inner wall of the movable groove 306. The inner wall of the movable groove 306 is fixedly connected to the bending spring 402. A sliding hole is provided on the surface of the positioning block 308. The shape of the sliding hole is adapted to the shape of the bending rod 401. One end of the bending spring 402 away from the movable groove 306 is fixedly connected to the arc surface of the positioning block 308, so that the positioning block 308 can slide on the arc surface of the bending rod 401.

[0026] In an embodiment of the present utility model, a mounting groove is provided on the surface of the movable block 302, the length of the mounting groove is adapted to the length of the straight rod 303, the straight rod 303 can be installed on the inner wall of the mounting groove, the locking plate 305 is L-shaped, a rotating hole is provided on the surface of the locking plate 305, the diameter of the rotating hole is adapted to the diameter of the straight rod 303, the locking plate 305 is sleeved on the arc surface of the straight rod 303, the locking plate 305 can slide on the arc surface of the straight rod 303, the number of positioning blocks 308 is set, and the plurality of positioning blocks 308 are movably installed in a linear array on the arc surface of the fixed rod 307, and the surface of the clamped object is fixed.

[0027] In the present invention, when in use, the telescopic cylinder 2 is started to enable the fixed block 5 to clamp the workpiece. Before clamping, the threaded rod 301 is adjusted to move the movable block 302. The L-shaped locking plate 305 performs a double fixation on the upper end of the workpiece under the action of the torsion spring 304. The workpiece squeezes one end of the locking plate 305, causing the locking plate 305 to deflect. One end of the locking plate 305 fixes the upper end of the workpiece. The positioning block 308 on the locking plate 305 better adapts to the upper surface of the workpiece for fixing, thereby stably fixing the workpiece.

[0028] Furthermore, the fixed block 5 adapts to the surface of the workpiece on the surface of the fixed rod 307 for clamping, and the fixed block 5 offsets and squeezes the bending spring 402 on the arc surface of the fixed rod 307 to adapt to the surface of the workpiece. At the same time, after the processing is completed, the bending spring 402 is reset, so that the fixed block 5 is reset for the next fixation, further ensuring the stability of the workpiece clamping.

[0029] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A pneumatic chuck with a double locking structure, comprising a chuck body (1), a fixing plate fixedly mounted on the upper surface of the chuck body (1), a telescopic cylinder (2) fixedly mounted on the side wall of the fixing plate, and a fixing block (5) fixedly mounted on the output end of the telescopic cylinder (2), characterized in that: A fixing mechanism (3) is provided above the chuck body (1), and a promotion mechanism (4) is provided above the chuck body (1). The promotion mechanism (4) comprises: A threaded rod (301), wherein the threaded rod (301) is movably mounted on the surface of the fixed block (5), the arcuate surface of the threaded rod (301) is threadedly connected to the movable block (302), the inner wall of the movable block (302) is fixedly connected to the straight rod (303), the arcuate surface of the straight rod (303) is fixedly connected to the torsion spring (304), and one end of the torsion spring (304) away from the arcuate surface of the straight rod (303) is fixedly connected to the inner wall of the locking plate (305); A movable groove (306) is provided on the surface of the locking plate (305); the inner wall of the movable groove (306) is fixedly connected to a fixed rod (307); and a positioning block (308) is movably mounted on the arc surface of the fixed rod (307).

2. The pneumatic chuck with a double locking structure according to claim 1, characterized in that: The promotion mechanism (4) comprises a curved rod (401), wherein the curved rod (401) is fixedly mounted on the inner wall of the movable groove (306), and the inner wall of the movable groove (306) is fixedly connected to a curved spring (402).

3. The pneumatic chuck with a double locking structure according to claim 2, characterized in that: A sliding hole is provided on the surface of the positioning block (308), the shape of which matches the shape of the bending rod (401), and one end of the bending spring (402) away from the movable groove (306) is fixedly connected to the arc surface of the positioning block (308).

4. The pneumatic chuck with a double locking structure according to claim 1, characterized in that: A mounting groove is provided on the surface of the movable block (302), and the length of the mounting groove is adapted to the length of the straight rod (303).

5. The pneumatic chuck with a double locking structure according to claim 1, characterized in that: The locking plate (305) is L-shaped, and a rotation hole is provided on the surface of the locking plate (305). The diameter of the rotation hole is adapted to the diameter of the straight rod (303), and the locking plate (305) is sleeved on the arc surface of the straight rod (303).

6. The pneumatic chuck with a double locking structure according to claim 1, characterized in that: There are a number of positioning blocks (308), and the positioning blocks (308) are movably mounted on the arc surface of the fixing rod (307) in a linear array.

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