Abstract: Clamping device for clamping a workpiece defining at least three protection holes, includes a supporting seat, a pressing plate, a clamping assembly, and an operation assembly. The supporting seat can define a sliding groove, a first receiving groove, a second receiving groove, and a receiving hole, and includes a protrusion portion. The pressing plate can be securely stacked upon the supporting seat. The clamping assembly can include a first and a second clamping subassembly, and is sandwiched between the supporting seat and the pressing plate. The operation assembly can include a locking member and a transmission pin eccentrically assembled to an end of the locking member. When the locking member is rotated, the transmission pin can be driven to resist the second clamping subassembly to be partially exposed from the supporting seat, simultaneously. The locking member can resist the first subassembly to be partially exposed from the supporting seat.

Abstract: An instant clamping mechanism includes a supporting member, a base seat, a clamping assembly and a handle assembly. The base seat is assembled to the supporting member and defines a sliding groove, the sliding groove includes a releasing end and a latching end, an axial distance within the base seat is defined from the latching end to the releasing end. The clamping assembly extends through the base seat and the supporting member and is partially exposed out from the supporting member. The handle assembly extends into the sliding groove and is partially exposed out from the base seat. The handle assembly is non-rotatably connected to the clamping assembly and is capable of sliding from the releasing end to the latching end to move the clamping assembly axially within the base seat, thereby clamping the workpiece on the supporting member.

Abstract: A clamping mechanism includes a positioning member, a support plate, a frame, a fastening assembly, and an operating assembly. The support plate defines a through hole. The fastening assembly is fixed to the frame. The fastening assembly includes a fastening member and an elastic member. The positioning member extends through the through hole of the support plate, and is fastened by the fastening member under an elastic force of the elastic member. The operating assembly resists the fastening member, thereby driving the fastening member away from the positioning member.

Abstract: A pneumatic control valve includes a first valve body, a pushing block, a rotating block, a second valve body, an end cover, and a piston. The first valve body defines a first gas inlet and a receiving hole. The first valve body forms a plurality of guiding ribs evenly positioned on the inner surface of the receiving hole away from the first gas inlet, and each of the guiding ribs forms an inclined surface at a distal end thereof. The pushing block and the rotating block are slidably received in the receiving hole. The second valve body is connected to an end of the first valve body adjacent to the receiving hole of the first valve body. The end cover is fastened on an end of the second valve body away from the first valve body. A pneumatic control system using the pneumatic control valve is also provided.

Abstract: A pneumatic cylinder includes a cylinder block, two piston rods, and two pairs of pistons. The cylinder block defines two receiving portions parallel to each other. Each receiving portion defines a first air chamber and a second air chamber; the second air chamber is in series with the first air chamber Each piston rod is partially received in one receiving portion. Each pair of pistons is sleeved on one piston rod, with two pistons received in the first air chamber and the second air chamber, respectively.

Abstract: An expansion assembly includes a connecting plug, a deformable sealing sleeve, and an expansion sleeve. The connecting plug defines a through hole configured for air flow to pass therethrough. The deformable sealing sleeve is sleeved on the connecting plug. The expansion sleeve houses the deformable sealing sleeve and is sleeved on the connecting plug. The expansion sleeve comprises a number of resilient arms separated from each other. When airflow is introduced into the deformable sealing sleeve via the connecting plug, the deformable sealing sleeve is expanded, causing the number of resilient arms of the expansion sleeve to expand outward. A positioning mechanism employing the expansion assembly is also disclosed.

Abstract: Clamping device for clamping a workpiece defining at least three protection holes, includes a supporting seat, a pressing plate, a clamping assembly, and an operation assembly. The supporting seat can define a sliding groove, a first receiving groove, a second receiving groove, and a receiving hole, and includes a protrusion portion. The pressing plate can be securely stacked upon the supporting seat. The clamping assembly can include a first and a second clamping subassembly, and is sandwiched between the supporting seat and the pressing plate. The operation assembly can include a locking member and a transmission pin eccentrically assembled to an end of the locking member. When the locking member is rotated, the transmission pin can be driven to resist the second clamping subassembly to be partially exposed from the supporting seat, simultaneously. The locking member can resist the first subassembly to be partially exposed from the supporting seat.

Abstract: A cylinder mechanism includes a cylinder body assembly, a piston assembly, and a grasping assembly. The cylinder body assembly includes a cylinder body. The cylinder body defines a receiving cavity, a first gas hole, and a second gas hole. The first and second gas holes communicate with the receiving cavity. The piston assembly includes a piston movably received in the receiving cavity, a guiding shaft movably received in the receiving cavity, and a limiting member. A first end of the guiding shaft is fixed to the piston, and a second end defines a receiving groove. A pair of guiding hole is defined in the guiding shaft. The grasping assembly includes a pushing member movably received in the guiding shaft, a pin received through the guiding holes, and a latching member movably received in the guiding shaft and capable of protruding outward.

Abstract: A screwdriver head mounting structure includes a mounting base, a screwdriver head, a latching member and an elastic member. The mounting base defines a mounting hole and an eccentric latching hole communicating with and positioned eccentric to the mounting hole. The screwdriver head is detachably assembled to the mounting base. The screwdriver head has a latching end inserted into the mounting hole of the mounting base. The latching member is releasably and adjustably assembled to the mounting base together with the elastic member. The latching member passes through the eccentric latching hole and latches with the latching end of the screwdriver head.

Abstract: An instant clamping mechanism includes a supporting member, a base seat, a clamping assembly and a handle assembly. The base seat is assembled to the supporting member and defines a sliding groove, the sliding groove includes a releasing end and a latching end, an axial distance within the base seat is defined from the latching end to the releasing end. The clamping assembly extends through the base seat and the supporting member and is partially exposed out from the supporting member. The handle assembly extends into the sliding groove and is partially exposed out from the base seat. The handle assembly is non-rotatably connected to the clamping assembly and is capable of sliding from the releasing end to the latching end to move the clamping assembly axially within the base seat, thereby clamping the workpiece on the supporting member.

Abstract: A control valve includes a valve body, a valve plug, two adjusting elements and two operating members. The valve body has a valve hole defined through the valve body and further defines an inlet hole and two outlet holes respectively communicating with the valve hole. The valve plug is movably assembled within the valve body. Two ends of the valve plug are respectively exposed to the outside of the valve body. The two adjusting elements are respectively mounted to two ends of the valve body and respectively adjustably resist against two ends of the valve plug. The two operating members are respectively fixed to the two adjusting elements for driving the two adjusting elements to move the valve plug within the valve hole of the valve body, and thereby controlling the control valve to switch between an open state and a closed state.

Abstract: A pneumatic control valve includes a first valve body, a pushing block, a rotating block, a second valve body, an end cover, and a piston. The first valve body defines a first gas inlet and a receiving hole. The first valve body forms a plurality of guiding ribs evenly positioned on the inner surface of the receiving hole away from the first gas inlet, and each of the guiding ribs forms an inclined surface at a distal end thereof. The pushing block and the rotating block are slidably received in the receiving hole. The second valve body is connected to an end of the first valve body adjacent to the receiving hole of the first valve body. The end cover is fastened on an end of the second valve body away from the first valve body. A pneumatic control system using the pneumatic control valve is also provided.

Abstract: A clamping mechanism includes a positioning member, a support plate, a frame, a fastening assembly, and an operating assembly. The support plate defines a through hole. The fastening assembly is fixed to the frame. The fastening assembly includes a fastening member and an elastic member. The positioning member extends through the through hole of the support plate, and is fastened by the fastening member under an elastic force of the elastic member. The operating assembly resists the fastening member, thereby driving the fastening member away from the positioning member.

Abstract: A clamp mechanism includes a support plate, a frame, a positioning member, a resisting member, an operating assembly. The support plate defines an assembly hole. The frame is fixed to the support plate, and defines a positioning groove and a sliding groove. The positioning member extends through the assembly hole of the support plate, and received in the positioning groove. The operating assembly is connected to the resisting member. The resisting member is movably received in the sliding groove and opposite to the positioning member. The sliding groove has a first end adjacent to the positioning member and a second end away from the positioning member, such that the operating assembly drives the resisting member to move in the sliding groove from the second end to the first end, thereby clamping the positioning member in the positioning groove of the frame.

Abstract: A screwdriver head mounting structure includes a mounting base, a screwdriver head, a latching member and an elastic member. The mounting base defines a mounting hole and an eccentric latching hole communicating with and positioned eccentric to the mounting hole. The screwdriver head is detachably assembled to the mounting base. The screwdriver head has a latching end inserted into the mounting hole of the mounting base. The latching member is releasably and adjustably assembled to the mounting base together with the elastic member. The latching member passes through the eccentric latching hole and latches with the latching end of the screwdriver head.

Abstract: A pneumatic cylinder includes a cylinder block, two piston rods, and two pairs of pistons. The cylinder block defines two receiving portions parallel to each other. Each receiving portion defines a first air chamber and a second air chamber; the second air chamber is in series with the first air chamber Each piston rod is partially received in one receiving portion. Each pair of pistons is sleeved on one piston rod, with two pistons received in the first air chamber and the second air chamber, respectively.

Abstract: A control valve includes a valve body, a valve plug, two adjusting elements and two operating members. The valve body has a valve hole defined through the valve body and further defines an inlet hole and two outlet holes respectively communicating with the valve hole. The valve plug is movably assembled within the valve body. Two ends of the valve plug are respectively exposed to the outside of the valve body. The two adjusting elements are respectively mounted to two ends of the valve body and respectively adjustably resist against two ends of the valve plug. The two operating members are respectively fixed to the two adjusting elements for driving the two adjusting elements to move the valve plug within the valve hole of the valve body, and thereby controlling the control valve to switch between an open state and a closed state.

Abstract: A control valve includes a hollow valve body, a valve plug and a block mechanism. The valve body defines a valve chamber, an inlet hole, two outlet holes and two connecting holes. The inlet hole, the two outlet holes and the two connecting holes communicate with the valve chamber, respectively. The valve plug is slidably assembled within the valve chamber of the valve body, and operating in one of three different working states of the control valve. The valve plug defines a first lock slot, an intermediate slot and a second lock slot. The block mechanism is adjustably assembled to the valve body and selectively received and engaged in one of the first lock slot, the intermediate slot or the second lock slot, in which each position of the valve plug establishes one of the three working states of the control valve.