TWI472415B - Clamping apparatus - Google Patents

Description

Clamping device

The invention relates to a clamping device.

Robotic arms have been widely used in actual production to replace manual clamping of workpieces or production and testing tools. For example, in the production of printed circuit board (PCB), the use of a mechanical arm to hold the test probe and accurately position the test probe on the test site of the PCB can greatly improve production efficiency and test accuracy. However, the front end of the conventional robot arm is usually equipped with pneumatic or hydraulic jaws, and must have a complicated gas path or oil passage structure, which is inconvenient to use and maintain.

In view of the above, it is necessary to provide a clamping device that is simple in structure, easy to use and maintain.

A clamping device for holding an object, the clamping device comprising a motor having a rotating shaft, a driving gear mounted on a rotating shaft of the motor, and a pair of clamping bodies symmetrically mounted on the motor, Each clamping body includes a driven gear that is engaged with the driving gear, a screw fixed to the driven gear and rotated with the driven gear, a slider threadedly coupled to the screw, and a fixed connection to the sliding a clamping arm of the block, the motor rotates to drive the driving gear, the driving gear drives the pair of driven gears and the screw to rotate, the pair of sliding blocks slidingly close to or separate from each other with the pair of screws rotating, so that the pair of clamping The arm holds or releases the object.

Compared with the prior art, the clamping device meshes with the driven gear of the pair of clamping bodies by using a driving gear mounted on the motor, and fixes the pair of screws to the pair of driven gears, and at the same time, each of the screws Mounting a slider matched with the thread thereof to convert the rotation of the rotating shaft of the motor into the rotation of the pair of driven gears and the screw, the rotation of the pair of screws further sliding the pair of sliders to drive the pair of clamping arms to each other Close or separate to grip or release the object, the clamping device is simple in structure, easy to use and maintain.

10‧‧‧Motor

12‧‧‧ shaft

14‧‧‧ Fixed seat

100‧‧‧Test probe

20‧‧‧Drive gear

21, 361‧‧‧ Installation Department

30‧‧‧Clamping body

31‧‧‧Support frame

312‧‧‧ side panels

314‧‧‧ pivotal department

3142‧‧‧ second side wall

3143‧‧‧ pivot hole

3144‧‧‧End wall

3146‧‧‧ openings

32‧‧‧ screw

321‧‧‧Fixed holes

33‧‧‧ Slider

331‧‧‧ side wall

332‧‧‧ chute

334‧‧‧Director

336, 337‧‧ ‧ threaded holes

34‧‧‧Connecting parts

341‧‧‧ fixed plate

3414‧‧‧ card slot

3416‧‧‧Lock hole

343‧‧‧ Ontology

35‧‧‧Clamping arm

351‧‧‧Card Department

353‧‧‧ card teeth

36‧‧‧ driven gear

3612‧‧‧Mounting holes

3614‧‧‧Kalgukong

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded perspective view of a preferred embodiment of a clamping device of the present invention, the clamping device including a pair of clamping bodies.

2 is an exploded perspective view of a clamping body of FIG. 1.

Figure 3 is a perspective assembled view of the clamping device of Figure 1.

Fig. 4 is a view showing a state of use of the holding device of Fig. 3.

Referring to FIG. 1, a preferred embodiment of the clamping device of the present invention includes a motor 10, a drive gear 20 and a pair of clamping bodies 30.

The first end of the motor 10 extends from a shaft 12. The second end of the motor 10 (the end away from the first end) is provided with a fixing seat 14.

The driving gear 20 is a bevel gear, and a mounting portion 21 is protruded from one end thereof. The mounting portion 21 is provided with a mounting hole (not shown) along the axial direction.

Referring to FIG. 2 at the same time, the structure and assembly method of the clamping body 30 are the same, and only one of them will be described below as an example. The clamping body 30 includes a support frame 31, a screw 32, a slider 33, a connecting member 34, a clamping arm 35 and a driven gear 36. The support frame 31 includes a side plate 312 and a pivoting portion 314 connected to one end of the side plate 312. The pivoting portion 314 is a substantially rectangular parallelepiped housing, and includes a first sidewall (not labeled) connected to the side panel 312, and a pair of second sidewalls extending perpendicularly from opposite side edges of the first sidewall. 3142 and a pair of end walls 3144 respectively provided with a pivot hole 3143. The pair of pivot holes 3143 are aligned with each other. The pivoting portion 314 is provided with an opening 3146 on a side opposite to the first side wall thereof. The screw 32 is provided with a fixing hole 321 adjacent to one end thereof. The slider 33 is substantially a cube. The slider 33 is provided with a pair of spaced apart sliding slots 332 extending through the opposite side walls 331. A pair of guiding portions 334 are formed between the pair of sliding slots 332. The guiding portion 334 is provided with a thread running through the vertical sidewalls 331. Hole 336. The top wall and the top wall of the slider 33 are respectively provided with a pair of threaded holes 337 at the opening away from the opening 332. The connecting member 34 includes an arcuate body 343. The body 343 extends along the upper/lower surface to form a pair of mutually parallel fixing plates 341. The body 343 is provided with a card slot 3414 in the middle of the second end. The pair of fixing plates 341 are respectively provided with two locking holes 3416 adjacent to the body 343. The first end of the clamping arm 35 is provided with a fastening portion 351. One side of the clamping arm 35 protrudes from the second end (the end away from the fastening portion 351). The driven gear 36 is a bevel gear, and a cylindrical mounting portion 361 is protruded from one end thereof. The mounting portion 361 is provided with a mounting hole 3612 in the axial direction. The mounting portion 361 is provided in the radial direction through the surface thereof. The cardhole 3614.

Referring to FIG. 3 , during assembly, a clamping body 30 is assembled, and the fastening portion 351 of the clamping arm 35 is fastened in the locking groove 3414 of the connecting member 34 . The slider 33 is inserted between the two fixing plates 341 of the connecting member 34, and is respectively screwed into the locking holes 3416 of the two fixing plates 341 by two pairs of screws, and then screwed to the screw holes 337 of the slider 33, thereby The slider 33 is fixed between the fixing plates 341 of the connecting member 34. The two second side walls 3142 of the pivoting portion 314 of the support frame 31 are respectively engaged in the two sliding slots 332 of the slider 33, so that the guiding portion 334 of the slider 33 is from the pivoting portion 314 of the supporting frame 31. Opening 3146 is loaded into the pivot Between the second side wall 3142 of the connecting portion 314, the slider 33 is slidable along the second side wall 3142 of the pivoting portion 314 between the end walls 3144 of the pivoting portion 314, and the threaded hole of the guiding portion 334 336 is aligned with the pivot hole 3143 of the pivoting portion 314. The screw 32 passes through the pivot hole 3143 of the pivoting portion 314 of the support frame 31 and is screwed to the threaded hole 336 of the slider 33. An end of the screw 32 adjacent to the fixing hole 321 passes through the threaded hole 336 of the slider 33 and is engaged with the mounting hole 3612 of the mounting portion 361 of the driven gear 36, and is engaged by the pin (not shown). The fixing hole 3614 of the mounting portion 361 of the gear 36 and the fixing hole 321 of the screw 32 are fixed to the screw 32. The other clamping body 30 is reassembled. The rotating shaft 12 of the motor 10 is snapped into and fixed to the mounting hole of the mounting portion 21 of the driving gear 20, thereby fixing the driving gear 20 to the rotating shaft 12 of the motor 10. The side plates 312 of the support frame 31 of the pair of clamping bodies 30 are respectively attached to opposite sides of the motor 10, and the driven gears 36 of the pair of clamping bodies 30 are engaged with the driving gears 20, and the pair is driven. The rotating shafts of the gears 36 are aligned with each other and perpendicular to the rotating shaft of the driving gear 20. The ends of the side plates 312 of the support frame 31 of the clamping body 30 away from the respective pivoting portions 314 are respectively fixed to opposite side edges of the fixing seat 14 of the motor 10 by screws such as screws (not shown), thereby The pair of clamping bodies 30 are symmetrically mounted on both sides of the motor 10.

Referring to FIG. 4, in the embodiment, the clamping device is used for clamping an object. In the embodiment, the object is a test probe 100. It can be understood that the clamping device can also be used for clamping other objects. . In use, the motor 10 is activated to rotate the driving gear 20 and drive the driven gear 36 of the pair of clamping bodies 30. The screw 32 of the pair of clamping bodies 30 rotates with the corresponding driven gear 36, so that the sliders 33 of the pair of clamping bodies 30 are slid in the direction away from each other by the corresponding screw 32, and the two connecting members 34 are respectively fixed. The clamping arms 35 of the two connecting members 34 are separated from each other as the corresponding slider 33 moves. When the distance between the pair of clamping arms 35 is sufficient to accommodate the test probe 100, The clamping device is moved such that the test probe 100 is located between the clamping arms 35 of the clamping device. Operating the motor 10 to reversely rotate the driving gear 20 to drive the driven gear 36 and the screw 32 of the pair of clamping bodies 30 such that the sliders 33 of the pair of clamping bodies 30 are adjacent to each other along the corresponding screw 32. The two connecting members 34 and the clamping arms 35 respectively fixed to the two connecting members 34 move toward each other as the corresponding sliders 33 move until the test probe 100 is clamped between the pair of clamping arms 35. The latching teeth 353 of the pair of clamping arms 35 respectively abut the opposite sides of the test probe 100, thereby increasing the friction between the two clamping arms 35 and the test probe 100, preventing the test probe 100 from being self-testing. The two clamping arms 35 slide down.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

10‧‧‧Motor

14‧‧‧ Fixed seat

100‧‧‧Test probe

20‧‧‧Drive gear

312‧‧‧ side panels

314‧‧‧ pivotal department

32‧‧‧ screw

33‧‧‧ Slider

34‧‧‧Connecting parts

35‧‧‧Clamping arm

36‧‧‧ driven gear

Claims (9)

A clamping device for holding an object, the clamping device comprising a motor having a rotating shaft, a driving gear mounted on a rotating shaft of the motor, and a pair of clamping bodies symmetrically mounted on the motor, Each clamping body includes a driven gear that is engaged with the driving gear, a screw fixed to the driven gear and rotated with the driven gear, a slider threadedly coupled to the screw, and a fixed connection to the sliding Each of the clamping bodies further includes a support frame fixed to the motor and a connecting member, the support frame includes a pivoting portion, the pivoting portion includes a pair of parallel opposing side walls, the slider a pair of sliding slots are provided which are spaced apart and are slidably engaged by the corresponding side wall of the pivoting portion. The connecting member comprises a body, and the body extends at a first end with a pair of fixing plates spaced apart from each other, each clamping body clamp Between the two fixing plates of the connecting member, the clamping arm is fixed to the second end of the body of the connecting member, the motor rotates to drive the driving gear, and the driving gear drives the pair of driven gears and the screw to rotate. The pair of sliders follow the pair Rotation of the lever to slide toward and away from each other, so that the object of clamping or releasing the clamp arm. The clamping device of claim 1, wherein each of the support frames includes a side plate, and the pivoting portion is connected to one end of the side plate for mounting the screw, and the side plates of the two support frames are respectively installed. On the opposite sides of the motor. The clamping device of claim 2, wherein the pivoting portion is a substantially rectangular parallelepiped housing, the pivoting portion comprising a pair of end walls respectively provided with a pivoting hole, both ends of the screw The two pivoting holes are respectively rotatably disposed on the pivoting portion, and the slider is received in the pivoting portion and slides along the screw between the end walls of the pivoting portion along with the rotation of the screw. A holding device according to any one of claims 1 to 3, wherein the slider is provided with a threaded hole through which the screw passes and is threadedly engaged with the screw. The clamping device of claim 3, wherein the pair of side walls are respectively connected to the pivoting Between the end walls of the part. The clamping device of claim 2, wherein the motor is provided with a fixing seat, and the side plates of the pair of supporting frames are respectively fixed to opposite side edges of the fixing seat. The clamping device of claim 1, wherein the body of the connecting member is provided with a card slot in a middle portion of the second end, and the clamping arm of the clamping body includes opposite first ends and second ends, The first end of the clamping arm of the clamping body is provided with a fastening portion that is fastened to the slot of the connecting member. The clamping device of claim 7, wherein the opposite sides of the two clamping arms project a plurality of teeth adjacent to the second end thereof. The clamping device of claim 1, wherein the driving gear and the driven gear of the pair of clamping bodies are both bevel gears, and the rotating shafts of the pair of driven gears are aligned with each other and perpendicular to the driving gear. The shaft.