A grasping device for grasping a lens runner system is disclosed. The grasping device includes a support having a connecting rod, four claws arranged around the connecting rod, a driving sleeve, and an actuator. Each claw includes a first end and a second end opposite to the first end and tapers fro
A grasping device for grasping a lens runner system is disclosed. The grasping device includes a support having a connecting rod, four claws arranged around the connecting rod, a driving sleeve, and an actuator. Each claw includes a first end and a second end opposite to the first end and tapers from the second end to the first end. The first end is elastically connected to the connection rod. Each two adjacent claws define a gap for receiving the lens runner system. The driving sleeve sleeves into the claws from the first end. The actuator is supported by the support and configured for driving the driving sleeve to move relative to the second end.
대표청구항▼
1. A grasping device for grasping a lens runner system, the grasping device comprising: a support extending a connection rod;a plurality of claws arranged around the connection rod, each claw comprising a first end and a second end opposite to the first end and tapering from the second end to the fi
1. A grasping device for grasping a lens runner system, the grasping device comprising: a support extending a connection rod;a plurality of claws arranged around the connection rod, each claw comprising a first end and a second end opposite to the first end and tapering from the second end to the first end, the first end being elastically connected to the connection rod, each two adjacent claws defining a gap for receiving the lens runner system;a driving sleeve sleeving into the claws from the first end; andan actuator supported by the support and configured for driving the driving sleeve to move relative to the second end. 2. The grasping device of claim 1, wherein each claw comprises a claw body and an elastic element, and the elastic element connects the claw body to the connection rod. 3. The grasping device of claim 2, wherein the elastic element is made of spring steel. 4. The grasping device of claim 2, wherein each claw body is substantially a rectangular tapered rod and comprises two upright sidewalls and two sloping sidewalls, the two upright sidewalls extend uprightly between the first end and the second end and connect with each other, the two sloping sidewalls extend slantingly between the first end and the second end and connect to the respective upright sidewalls. 5. The grasping device of claim 4, wherein the connection rod is a regular polygonal rod and comprises a plurality of side surfaces, each side surface defines a second threaded blind hole, each elastic element includes two elastic section perpendicularly connecting with each other, each elastic section defines a second through hole, each elastic element connects a respective side surface to a respective first end such that the second through hole is aligned with a respective second threaded blind hole, and screws insert through the respective second through hole and screw into the respective second threaded blind holes. 6. The grasping device of claim 4, wherein each claw body defines a tapered bevel in an intersection of the two upright sidewalls adjacent to the second end, and the bevel extends along a direction substantially parallel to an intersection line of the two sloping sidewalls. 7. The grasping device of claim 4, wherein each claw body defines a chamfer in an intersection of the two sloping sidewalls, the chamfer extends along the direction substantially parallel to the intersection line of the two sloping sidewalls and forms a sliding surface, the driving sleeve comprises a plurality rollers, each roller lies on a corresponding sliding surface. 8. The grasping device of claim 4, wherein the elastic element is made of spring steel. 9. The grasping device of claim 1, wherein the support comprises an upper board, a bottom board parallel to the upper board, and two parallel side boards connecting the upper board and the bottom board, and the connection rod extends from a side of the bottom board facing away from the upper board and positioned at the center of the side of the bottom board. 10. The grasping device of claim 9, wherein the driving sleeve comprises a closed end and an opened end, and diametrically defines two guiding slots extending to the opened end along the longitudinal direction thereof, and the bottom board is slidably received in the two guiding slots to guide the driving sleeve to move relative to the support. 11. The grasping device of claim 9, wherein the actuator is a cylinder that comprises a cylinder body and a piston rod. 12. The grasping device of claim 11, wherein the upper board is separated at the center thereof, two portions thereof adjacent to the separation point are bent away from the bottom board, thus forming two fixing sections, each fixing section defines a first through holes, the cylinder body having two opposite side surfaces, each of which defines a threaded blind hole, the actuator is located between the two fixing sections, the first through holes are aligned with the threaded blind holes, and screws inserts through the first through holes and screw into the threaded blind holes. 13. The grasping device of claim 12, wherein the driving sleeve comprises a closed end and an opened end, the closed end defines a connecting through hole, and the piston rod inserts and engages with the connecting through hole. 14. A grasping device, comprising: a support having a connection rod;a plurality of claws arranged around the connection rod, each claw comprising a first end and a second end opposite to the first end, the first end being elastically connected to the connection rod, each claw tapering from the second end to the first end thereof , each two adjacent claws defining a gap;a driving sleeve partially receiving the claws and having an opening end, the opening end contacting the claws, the first end of each claw being received in the driving sleeve; andan actuator connecting to the driving sleeve and configured to drive the driving sleeve to move relative to the second end such that the claws are compressed by the opening end to make the gaps decrease, or released from the opening end to make the gaps increase. 15. The grasping device of claim 14, wherein each claw comprises a claw body and an elastic element, and the elastic element connects the claw body to the connection rod, each claw body is substantially a rectangular tapered rod and comprises two upright sidewalls and two sloping sidewalls, the two upright sidewalls extend uprightly between the first end and the second end and connect with each other, the two sloping sidewalls extend slantingly between the first end and the second end and connect to the respective upright sidewalls. 16. The grasping device of claim 15, wherein the elastic element is made of spring steel. 17. The grasping device of claim 15, wherein the support comprises an upper board, a bottom board parallel to the upper board, and two parallel side boards connecting the upper board and the bottom board, and the connection rod extends from a side of the bottom board facing away from the upper board and positioned at the center of the side of the bottom board.
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